mirror of
https://github.com/freebsd/freebsd-src
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With much regret, I had to remove these two programs - their license
doesn't permit us to distribute them. I think I should take some law classes... Explained by: bde
This commit is contained in:
Andrzej Bialecki
parent
a57faa7b13
commit
f2c7b777e2
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=40633
|
|
@ -1,77 +0,0 @@
|
|||
LICENSE AGREEMENT AND LIMITED WARRANTY
|
||||
|
||||
READ THE FOLLOWING TERMS AND CONDITIONS CAREFULLY BEFORE YOU
|
||||
PROCEED. THIS LEGAL DOCUMENT IS AN AGREEMENT BETWEEN YOU AND
|
||||
PRENTICE-HALL, INC. (THE "COMPANY"). BY ACCESSING THE SOFTWARE, YOU
|
||||
ARE AGREEING TO BE BOUND BY THESE TERMS AND CONDITIONS. IF YOU DO
|
||||
NOT AGREE WITH THESE TERMS AND CONDITIONS, DO NOT ACCESS TO SOFTWARE
|
||||
AND ALL ACCOMPANYING ITEMS.
|
||||
|
||||
1. GRANT OF LICENSE:
|
||||
In consideration of your agreement to abide by the terms and
|
||||
conditions of this Agreement, the Company grants to you a
|
||||
nonexclusive right to use, display and modify the Software being
|
||||
transmitted to you (hereinafter "the Software") for educational and
|
||||
research purposes and to include such Software as part of another
|
||||
computer program (i) for use by you; or (ii) for use by third
|
||||
parties, provided that copies to those third parties are distributed
|
||||
for educational or research purposes free of direct or indirect
|
||||
charges. If you wish to otherwise use or distribute the Software,
|
||||
you must enter into a separate agreement with the Company. To do so,
|
||||
please contact the person designated below.
|
||||
|
||||
This license shall continue in effect so long as you comply with the
|
||||
terms of this Agreement and will automatically terminate if you fail
|
||||
to comply. The Company is and shall remain the copyright owner of
|
||||
the Software and reserves all rights not expressly granted to you
|
||||
under this Agreement. All provisions of this Agreement as to
|
||||
warranties, limitation of liability, remedies or damages and
|
||||
ownership rights shall survive termination.
|
||||
|
||||
2. MISCELLANEOUS:
|
||||
This Agreement shall be construed in accordance with the laws of the
|
||||
United States of America and the State of New York and shall benefit
|
||||
the Company, its affiliates and assignees.
|
||||
|
||||
3. LIMITED WARRANTY AND DISCLAIMER OF WARRANTY:
|
||||
Because this Software is being given to you without charge, the
|
||||
Company makes no warranties about the SOFTWARE, which is provided
|
||||
"AS-IS." THE COMPANY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
|
||||
INCLUDING WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE COMPANY
|
||||
DOES NOT WARRANT, GUARANTEE OR MAKE ANY REPRESENTATION REGARDING THE
|
||||
USE OR THE RESULTS OF THE USE OF THE SOFTWARE. IN NO EVENT SHALL
|
||||
THE COMPANY OR ITS EMPLOYEES, AGENTS, SUPPLIERS OR CONTRACTORS BE
|
||||
LIABLE FOR ANY INCIDENTAL, INDIRECT, SPECIAL OR CONSEQUENTIAL
|
||||
DAMAGES ARISING OUT OF OR IN CONNECTION WITH THE LICENSE GRANTED
|
||||
UNDER THIS AGREEMENT INCLUDING, WITHOUT LIMITATION, LOSS OF USE,
|
||||
LOSS OF DATA, LOSS OF INCOME OR PROFIT, OR OTHER LOSSES SUSTAINED AS
|
||||
A RESULT OF INJURY TO ANY PERSON, OR LOSS OF OR DAMAGE TO PROPERTY,
|
||||
OR CLAIMS OF THIRD PARTIES, EVEN IF THE COMPANY OR AN AUTHORIZED
|
||||
REPRESENTATIVE OF THE COMPANY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
|
||||
SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OF IMPLIED WARRANTIES
|
||||
OR LIABILITY FOR INCIDENTAL, INDIRECT, SPECIAL OR CONSEQUENTIAL
|
||||
DAMAGES, SO THE ABOVE LIMITATIONS MAY NOT ALWAYS APPLY. YOU MAY HAVE
|
||||
RIGHTS WHICH VARY IN ACCORDANCE WITH LOCAL LAW.
|
||||
|
||||
|
||||
ACKNOWLEDGMENT
|
||||
|
||||
YOU ACKNOWLEDGE THAT YOU HAVE READ THIS AGREEMENT, UNDERSTAND IT AND
|
||||
AGREE TO BE BOUND BY ITS TERMS AND CONDITIONS. YOU ALSO AGREE THAT
|
||||
THIS AGREEMENT IS THE COMPLETE AND EXCLUSIVE STATEMENT OF THE
|
||||
AGREEMENT BETWEEN YOU AND THE COMPANY AND SUPERSEDES ALL PROPOSALS
|
||||
OR PRIOR AGREEMENTS, ORAL OR WRITTEN, AND ANY OTHER COMMUNICATIONS
|
||||
BETWEEN YOU AND THE COMPANY OR ANY REPRESENTATIVE OF THE COMPANY
|
||||
RELATING TO THE SUBJECT MATTER OF THIS AGREEMENT.
|
||||
|
||||
Should you have any questions concerning this agreement or if you
|
||||
wish to contact the Company for any reason, please contact
|
||||
|
||||
Alan Apt (alan_apt@prenhall.com)
|
||||
Prentice Hall
|
||||
2629 Redwing Rd.
|
||||
Suite #260
|
||||
Ft.Collins,CO 80526
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|
|
@ -1,18 +0,0 @@
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# Makefile for mined
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CFLAGS = -D_POSIX_SOURCE -DASSUME_CONS25
|
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|
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OBJ = mined1.o mined2.o
|
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|
||||
all: mined
|
||||
|
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mined: $(OBJ)
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||||
$(CC) -static -o $@ $(OBJ)
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|
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install: /usr/bin/mined
|
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|
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|
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$(OBJ): mined.h
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|
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clean:
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rm -f mined *.o *.s core *.bak
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|
|
@ -1,23 +0,0 @@
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Warsaw, 1998.10.21
|
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|
||||
This is a port of Minix editor. It's small, fast and relatively
|
||||
robust. It can perform basic editing commands, block operations,
|
||||
and search and replace.
|
||||
|
||||
The keybindings are just plain insane. I added a help screen
|
||||
(available under F1), and remapped some of the wildest keys to
|
||||
function keys. If you have some time and a bit of hacking skills,
|
||||
you're welcome to sanitize it. :-)
|
||||
|
||||
A bit of warning: one of the reasons for its small size is that it
|
||||
doesn't use any termcap calls - it uses hardwired codes for 'cons25'
|
||||
terminal type. If you try to use it with some other terminal, you
|
||||
have to change them, or recompile with -DUNIX -ltermcap.
|
||||
|
||||
This is a copyrighted software - see the file LICENSE. It allows
|
||||
you to use it for research and educational purposes only.
|
||||
|
||||
Andrzej Bialecki
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<abial@FreeBSD.org>
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|
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$Id: README,v 1.1 1998/10/21 17:36:16 abial Exp $
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|
|
@ -1,377 +0,0 @@
|
|||
/*========================================================================*
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||||
* Mined.h *
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||||
*========================================================================*/
|
||||
|
||||
#include <sys/types.h>
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#include <fcntl.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
#include <limits.h>
|
||||
|
||||
#ifndef YMAX
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#ifdef UNIX
|
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#include <stdio.h>
|
||||
#undef putchar
|
||||
#undef getchar
|
||||
#undef NULL
|
||||
#undef EOF
|
||||
extern char *CE, *VS, *SO, *SE, *CL, *AL, *CM;
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#define YMAX 49
|
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#else
|
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#define YMAX 24 /* Maximum y coordinate starting at 0 */
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||||
/* Escape sequences. */
|
||||
extern char *enter_string; /* String printed on entering mined */
|
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extern char *rev_video; /* String for starting reverse video */
|
||||
extern char *normal_video; /* String for leaving reverse video */
|
||||
extern char *rev_scroll; /* String for reverse scrolling */
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||||
extern char *pos_string; /* Absolute cursor positioning */
|
||||
#define X_PLUS ' ' /* To be added to x for cursor sequence */
|
||||
#define Y_PLUS ' ' /* To be added to y for cursor sequence */
|
||||
#endif /* UNIX */
|
||||
|
||||
#define XMAX 79 /* Maximum x coordinate starting at 0*/
|
||||
#define SCREENMAX (YMAX - 1) /* Number of lines displayed */
|
||||
#define XBREAK (XMAX - 1) /* Line shift at this coordinate */
|
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#define SHIFT_SIZE 25 /* Number of chars to shift */
|
||||
#define SHIFT_MARK '!' /* Char indicating line continues */
|
||||
#define MAX_CHARS 1024 /* Maximum chars on one line */
|
||||
|
||||
/* LINE_START must be rounded up to the lowest SHIFT_SIZE */
|
||||
#define LINE_START (((-MAX_CHARS - 1) / SHIFT_SIZE) * SHIFT_SIZE \
|
||||
- SHIFT_SIZE)
|
||||
#define LINE_END (MAX_CHARS + 1) /* Highest x-coordinate for line */
|
||||
|
||||
#define LINE_LEN (XMAX + 1) /* Number of characters on line */
|
||||
#define SCREEN_SIZE (XMAX * YMAX) /* Size of I/O buffering */
|
||||
#define BLOCK_SIZE 1024
|
||||
|
||||
/* Return values of functions */
|
||||
#define ERRORS -1
|
||||
#define NO_LINE (ERRORS - 1) /* Must be < 0 */
|
||||
#define FINE (ERRORS + 1)
|
||||
#define NO_INPUT (ERRORS + 2)
|
||||
|
||||
#define STD_OUT 1 /* File descriptor for terminal */
|
||||
|
||||
#if (CHIP == INTEL)
|
||||
#define MEMORY_SIZE (50 * 1024) /* Size of data space to malloc */
|
||||
#endif
|
||||
|
||||
#define REPORT 2 /* Report change of lines on # lines */
|
||||
|
||||
typedef int FLAG;
|
||||
|
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/* General flags */
|
||||
#define FALSE 0
|
||||
#define TRUE 1
|
||||
#define NOT_VALID 2
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||||
#define VALID 3
|
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#define OFF 4
|
||||
#define ON 5
|
||||
|
||||
/* Expression flags */
|
||||
#define FORWARD 6
|
||||
#define REVERSE 7
|
||||
|
||||
/* Yank flags */
|
||||
#define SMALLER 8
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||||
#define BIGGER 9
|
||||
#define SAME 10
|
||||
#define EMPTY 11
|
||||
#define NO_DELETE 12
|
||||
#define DELETE 13
|
||||
#define READ 14
|
||||
#define WRITE 15
|
||||
|
||||
/*
|
||||
* The Line structure. Each line entry contains a pointer to the next line,
|
||||
* a pointer to the previous line, a pointer to the text and an unsigned char
|
||||
* telling at which offset of the line printing should start (usually 0).
|
||||
*/
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||||
struct Line {
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||||
struct Line *next;
|
||||
struct Line *prev;
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||||
char *text;
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||||
unsigned char shift_count;
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||||
};
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||||
|
||||
typedef struct Line LINE;
|
||||
|
||||
/* Dummy line indicator */
|
||||
#define DUMMY 0x80
|
||||
#define DUMMY_MASK 0x7F
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||||
|
||||
/* Expression definitions */
|
||||
#define NO_MATCH 0
|
||||
#define MATCH 1
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||||
#define REG_ERROR 2
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||||
|
||||
#define BEGIN_LINE (2 * REG_ERROR)
|
||||
#define END_LINE (2 * BEGIN_LINE)
|
||||
|
||||
/*
|
||||
* The regex structure. Status can be any of 0, BEGIN_LINE or REG_ERROR. In
|
||||
* the last case, the result.err_mess field is assigned. Start_ptr and end_ptr
|
||||
* point to the match found. For more details see the documentation file.
|
||||
*/
|
||||
struct regex {
|
||||
union {
|
||||
char *err_mess;
|
||||
int *expression;
|
||||
} result;
|
||||
char status;
|
||||
char *start_ptr;
|
||||
char *end_ptr;
|
||||
};
|
||||
|
||||
typedef struct regex REGEX;
|
||||
|
||||
/* NULL definitions */
|
||||
#define NIL_PTR ((char *) 0)
|
||||
#define NIL_LINE ((LINE *) 0)
|
||||
#define NIL_REG ((REGEX *) 0)
|
||||
#define NIL_INT ((int *) 0)
|
||||
|
||||
/*
|
||||
* Forward declarations
|
||||
*/
|
||||
extern int nlines; /* Number of lines in file */
|
||||
extern LINE *header; /* Head of line list */
|
||||
extern LINE *tail; /* Last line in line list */
|
||||
extern LINE *top_line; /* First line of screen */
|
||||
extern LINE *bot_line; /* Last line of screen */
|
||||
extern LINE *cur_line; /* Current line in use */
|
||||
extern char *cur_text; /* Pointer to char on current line in use */
|
||||
extern int last_y; /* Last y of screen. Usually SCREENMAX */
|
||||
extern int ymax;
|
||||
extern int screenmax;
|
||||
extern char screen[SCREEN_SIZE];/* Output buffer for "writes" and "reads" */
|
||||
|
||||
extern int x, y; /* x, y coordinates on screen */
|
||||
extern FLAG modified; /* Set when file is modified */
|
||||
extern FLAG stat_visible; /* Set if status_line is visible */
|
||||
extern FLAG writable; /* Set if file cannot be written */
|
||||
extern FLAG quit; /* Set when quit character is typed */
|
||||
extern FLAG rpipe; /* Set if file should be read from stdin */
|
||||
extern int input_fd; /* Fd for command input */
|
||||
extern FLAG loading; /* Set if we're loading a file */
|
||||
extern int out_count; /* Index in output buffer */
|
||||
extern char file_name[LINE_LEN]; /* Name of file in use */
|
||||
extern char text_buffer[MAX_CHARS]; /* Buffer for modifying text */
|
||||
extern char *blank_line; /* Clear line to end */
|
||||
|
||||
extern char yank_file[]; /* Temp file for buffer */
|
||||
extern FLAG yank_status; /* Status of yank_file */
|
||||
extern long chars_saved; /* Nr of chars saved in buffer */
|
||||
|
||||
/*
|
||||
* Empty output buffer
|
||||
*/
|
||||
#define clear_buffer() (out_count = 0)
|
||||
|
||||
/*
|
||||
* Print character on terminal
|
||||
*/
|
||||
#define putchar(c) (void) write_char(STD_OUT, (c))
|
||||
|
||||
/*
|
||||
* Ring bell on terminal
|
||||
*/
|
||||
#define ring_bell() putchar('\07')
|
||||
|
||||
/*
|
||||
* Print string on terminal
|
||||
*/
|
||||
#define string_print(str) (void) writeline(STD_OUT, (str))
|
||||
|
||||
/*
|
||||
* Flush output buffer
|
||||
*/
|
||||
#define flush() (void) flush_buffer(STD_OUT)
|
||||
|
||||
/*
|
||||
* Convert cnt to nearest tab position
|
||||
*/
|
||||
#define tab(cnt) (((cnt) + 8) & ~07)
|
||||
#define is_tab(c) ((c) == '\t')
|
||||
|
||||
/*
|
||||
* Word defenitions
|
||||
*/
|
||||
#define white_space(c) ((c) == ' ' || (c) == '\t')
|
||||
#define alpha(c) ((c) != ' ' && (c) != '\t' && (c) != '\n')
|
||||
|
||||
/*
|
||||
* Print line on terminal at offset 0 and clear tail of line
|
||||
*/
|
||||
#define line_print(line) put_line(line, 0, TRUE)
|
||||
|
||||
/*
|
||||
* Move to coordinates and set textp. (Don't use address)
|
||||
*/
|
||||
#define move_to(nx, ny) move((nx), NIL_PTR, (ny))
|
||||
|
||||
/*
|
||||
* Move to coordinates on screen as indicated by textp.
|
||||
*/
|
||||
#define move_address(address) move(0, (address), y)
|
||||
|
||||
/*
|
||||
* Functions handling status_line. ON means in reverse video.
|
||||
*/
|
||||
#define status_line(str1, str2) (void) bottom_line(ON, (str1), \
|
||||
(str2), NIL_PTR, FALSE)
|
||||
#define error(str1, str2) (void) bottom_line(ON, (str1), \
|
||||
(str2), NIL_PTR, FALSE)
|
||||
#define get_string(str1,str2, fl) bottom_line(ON, (str1), NIL_PTR, (str2), fl)
|
||||
#define clear_status() (void) bottom_line(OFF, NIL_PTR, NIL_PTR, \
|
||||
NIL_PTR, FALSE)
|
||||
|
||||
/*
|
||||
* Print info about current file and buffer.
|
||||
*/
|
||||
#define fstatus(mess, cnt) file_status((mess), (cnt), file_name, \
|
||||
nlines, writable, modified)
|
||||
|
||||
/*
|
||||
* Get real shift value.
|
||||
*/
|
||||
#define get_shift(cnt) ((cnt) & DUMMY_MASK)
|
||||
|
||||
#endif /* YMAX */
|
||||
|
||||
#ifdef __FreeBSD__
|
||||
#define _PROTOTYPE(x,y) x ## y
|
||||
#endif
|
||||
|
||||
/* mined1.c */
|
||||
|
||||
_PROTOTYPE(void FS, (void));
|
||||
_PROTOTYPE(void VI, (void));
|
||||
_PROTOTYPE(int WT, (void));
|
||||
_PROTOTYPE(void XWT, (void));
|
||||
_PROTOTYPE(void SH, (void));
|
||||
_PROTOTYPE(LINE *proceed, (LINE *line, int count ));
|
||||
_PROTOTYPE(int bottom_line, (FLAG revfl, char *s1, char *s2, char *inbuf, FLAG statfl ));
|
||||
_PROTOTYPE(int count_chars, (LINE *line ));
|
||||
_PROTOTYPE(void move, (int new_x, char *new_address, int new_y ));
|
||||
_PROTOTYPE(int find_x, (LINE *line, char *address ));
|
||||
_PROTOTYPE(char *find_address, (LINE *line, int x_coord, int *old_x ));
|
||||
_PROTOTYPE(int length_of, (char *string ));
|
||||
_PROTOTYPE(void copy_string, (char *to, char *from ));
|
||||
_PROTOTYPE(void reset, (LINE *head_line, int screen_y ));
|
||||
_PROTOTYPE(void set_cursor, (int nx, int ny ));
|
||||
_PROTOTYPE(void open_device, (void));
|
||||
_PROTOTYPE(int getchar, (void));
|
||||
_PROTOTYPE(void display, (int x_coord, int y_coord, LINE *line, int count ));
|
||||
_PROTOTYPE(int write_char, (int fd, int c ));
|
||||
_PROTOTYPE(int writeline, (int fd, char *text ));
|
||||
_PROTOTYPE(void put_line, (LINE *line, int offset, FLAG clear_line ));
|
||||
_PROTOTYPE(int flush_buffer, (int fd ));
|
||||
_PROTOTYPE(void bad_write, (int fd ));
|
||||
_PROTOTYPE(void catch, (int sig ));
|
||||
_PROTOTYPE(void abort_mined, (void));
|
||||
_PROTOTYPE(void raw_mode, (FLAG state ));
|
||||
_PROTOTYPE(void panic, (char *message ));
|
||||
_PROTOTYPE(char *alloc, (int bytes ));
|
||||
_PROTOTYPE(void free_space, (char *p ));
|
||||
/*
|
||||
#ifdef UNIX
|
||||
_PROTOTYPE(void (*key_map [128]), (void));
|
||||
#else
|
||||
_PROTOTYPE(void (*key_map [256]), (void));
|
||||
#endif
|
||||
*/
|
||||
_PROTOTYPE(void initialize, (void));
|
||||
_PROTOTYPE(char *basename, (char *path ));
|
||||
_PROTOTYPE(void load_file, (char *file ));
|
||||
_PROTOTYPE(int get_line, (int fd, char *buffer ));
|
||||
_PROTOTYPE(LINE *install_line, (char *buffer, int length ));
|
||||
_PROTOTYPE(void main, (int argc, char *argv []));
|
||||
_PROTOTYPE(void RD, (void));
|
||||
_PROTOTYPE(void I, (void));
|
||||
_PROTOTYPE(void XT, (void));
|
||||
_PROTOTYPE(void ESC, (void));
|
||||
_PROTOTYPE(int ask_save, (void));
|
||||
_PROTOTYPE(int line_number, (void));
|
||||
_PROTOTYPE(void file_status, (char *message, long count, char *file, int lines,
|
||||
FLAG writefl, FLAG changed ));
|
||||
#if __STDC__
|
||||
void build_string(char *buf, char *fmt, ...);
|
||||
#else
|
||||
void build_string();
|
||||
#endif
|
||||
_PROTOTYPE(char *num_out, (long number ));
|
||||
_PROTOTYPE(int get_number, (char *message, int *result ));
|
||||
_PROTOTYPE(int input, (char *inbuf, FLAG clearfl ));
|
||||
_PROTOTYPE(int get_file, (char *message, char *file ));
|
||||
_PROTOTYPE(int _getchar, (void));
|
||||
_PROTOTYPE(void _flush, (void));
|
||||
_PROTOTYPE(void _putchar, (int c ));
|
||||
_PROTOTYPE(void get_term, (void));
|
||||
|
||||
/* mined2.c */
|
||||
|
||||
_PROTOTYPE(void UP, (void));
|
||||
_PROTOTYPE(void DN, (void));
|
||||
_PROTOTYPE(void LF, (void));
|
||||
_PROTOTYPE(void RT, (void));
|
||||
_PROTOTYPE(void HIGH, (void));
|
||||
_PROTOTYPE(void LOW, (void));
|
||||
_PROTOTYPE(void BL, (void));
|
||||
_PROTOTYPE(void EL, (void));
|
||||
_PROTOTYPE(void GOTO, (void));
|
||||
_PROTOTYPE(void HLP, (void));
|
||||
_PROTOTYPE(void PD, (void));
|
||||
_PROTOTYPE(void PU, (void));
|
||||
_PROTOTYPE(void HO, (void));
|
||||
_PROTOTYPE(void EF, (void));
|
||||
_PROTOTYPE(void SU, (void));
|
||||
_PROTOTYPE(void SD, (void));
|
||||
_PROTOTYPE(int forward_scroll, (void));
|
||||
_PROTOTYPE(int reverse_scroll, (void));
|
||||
_PROTOTYPE(void MP, (void));
|
||||
_PROTOTYPE(void move_previous_word, (FLAG remove ));
|
||||
_PROTOTYPE(void MN, (void));
|
||||
_PROTOTYPE(void move_next_word, (FLAG remove ));
|
||||
_PROTOTYPE(void DCC, (void));
|
||||
_PROTOTYPE(void DPC, (void));
|
||||
_PROTOTYPE(void DLN, (void));
|
||||
_PROTOTYPE(void DNW, (void));
|
||||
_PROTOTYPE(void DPW, (void));
|
||||
_PROTOTYPE(void S, (int character ));
|
||||
_PROTOTYPE(void CTL, (void));
|
||||
_PROTOTYPE(void LIB, (void));
|
||||
_PROTOTYPE(LINE *line_insert, (LINE *line, char *string, int len ));
|
||||
_PROTOTYPE(int insert, (LINE *line, char *location, char *string ));
|
||||
_PROTOTYPE(LINE *line_delete, (LINE *line ));
|
||||
_PROTOTYPE(void delete, (LINE *start_line, char *start_textp, LINE *end_line, char *end_textp ));
|
||||
_PROTOTYPE(void PT, (void));
|
||||
_PROTOTYPE(void IF, (void));
|
||||
_PROTOTYPE(void file_insert, (int fd, FLAG old_pos ));
|
||||
_PROTOTYPE(void WB, (void));
|
||||
_PROTOTYPE(void MA, (void));
|
||||
_PROTOTYPE(void YA, (void));
|
||||
_PROTOTYPE(void DT, (void));
|
||||
_PROTOTYPE(void set_up, (FLAG remove ));
|
||||
_PROTOTYPE(FLAG checkmark, (void));
|
||||
_PROTOTYPE(int legal, (void));
|
||||
_PROTOTYPE(void yank, (LINE *start_line, char *start_textp, LINE *end_line, char *end_textp, FLAG remove ));
|
||||
_PROTOTYPE(int scratch_file, (FLAG mode ));
|
||||
_PROTOTYPE(void SF, (void));
|
||||
_PROTOTYPE(void SR, (void));
|
||||
_PROTOTYPE(REGEX *get_expression, (char *message ));
|
||||
_PROTOTYPE(void GR, (void));
|
||||
_PROTOTYPE(void LR, (void));
|
||||
_PROTOTYPE(void change, (char *message, FLAG file ));
|
||||
_PROTOTYPE(char *substitute, (LINE *line, REGEX *program, char *replacement ));
|
||||
_PROTOTYPE(void search, (char *message, FLAG method ));
|
||||
_PROTOTYPE(int find_y, (LINE *match_line ));
|
||||
_PROTOTYPE(void finished, (REGEX *program, int *last_exp ));
|
||||
_PROTOTYPE(void compile, (char *pattern, REGEX *program ));
|
||||
_PROTOTYPE(LINE *match, (REGEX *program, char *string, FLAG method ));
|
||||
_PROTOTYPE(int line_check, (REGEX *program, char *string, FLAG method ));
|
||||
_PROTOTYPE(int check_string, (REGEX *program, char *string, int *expression ));
|
||||
_PROTOTYPE(int star, (REGEX *program, char *end_position, char *string, int *expression ));
|
||||
_PROTOTYPE(int in_list, (int *list, int c, int list_length, int opcode ));
|
||||
_PROTOTYPE(void dummy_line, (void));
|
||||
File diff suppressed because it is too large
Load diff
File diff suppressed because it is too large
Load diff
|
|
@ -1,77 +0,0 @@
|
|||
LICENSE AGREEMENT AND LIMITED WARRANTY
|
||||
|
||||
READ THE FOLLOWING TERMS AND CONDITIONS CAREFULLY BEFORE YOU
|
||||
PROCEED. THIS LEGAL DOCUMENT IS AN AGREEMENT BETWEEN YOU AND
|
||||
PRENTICE-HALL, INC. (THE "COMPANY"). BY ACCESSING THE SOFTWARE, YOU
|
||||
ARE AGREEING TO BE BOUND BY THESE TERMS AND CONDITIONS. IF YOU DO
|
||||
NOT AGREE WITH THESE TERMS AND CONDITIONS, DO NOT ACCESS TO SOFTWARE
|
||||
AND ALL ACCOMPANYING ITEMS.
|
||||
|
||||
1. GRANT OF LICENSE:
|
||||
In consideration of your agreement to abide by the terms and
|
||||
conditions of this Agreement, the Company grants to you a
|
||||
nonexclusive right to use, display and modify the Software being
|
||||
transmitted to you (hereinafter "the Software") for educational and
|
||||
research purposes and to include such Software as part of another
|
||||
computer program (i) for use by you; or (ii) for use by third
|
||||
parties, provided that copies to those third parties are distributed
|
||||
for educational or research purposes free of direct or indirect
|
||||
charges. If you wish to otherwise use or distribute the Software,
|
||||
you must enter into a separate agreement with the Company. To do so,
|
||||
please contact the person designated below.
|
||||
|
||||
This license shall continue in effect so long as you comply with the
|
||||
terms of this Agreement and will automatically terminate if you fail
|
||||
to comply. The Company is and shall remain the copyright owner of
|
||||
the Software and reserves all rights not expressly granted to you
|
||||
under this Agreement. All provisions of this Agreement as to
|
||||
warranties, limitation of liability, remedies or damages and
|
||||
ownership rights shall survive termination.
|
||||
|
||||
2. MISCELLANEOUS:
|
||||
This Agreement shall be construed in accordance with the laws of the
|
||||
United States of America and the State of New York and shall benefit
|
||||
the Company, its affiliates and assignees.
|
||||
|
||||
3. LIMITED WARRANTY AND DISCLAIMER OF WARRANTY:
|
||||
Because this Software is being given to you without charge, the
|
||||
Company makes no warranties about the SOFTWARE, which is provided
|
||||
"AS-IS." THE COMPANY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
|
||||
INCLUDING WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE COMPANY
|
||||
DOES NOT WARRANT, GUARANTEE OR MAKE ANY REPRESENTATION REGARDING THE
|
||||
USE OR THE RESULTS OF THE USE OF THE SOFTWARE. IN NO EVENT SHALL
|
||||
THE COMPANY OR ITS EMPLOYEES, AGENTS, SUPPLIERS OR CONTRACTORS BE
|
||||
LIABLE FOR ANY INCIDENTAL, INDIRECT, SPECIAL OR CONSEQUENTIAL
|
||||
DAMAGES ARISING OUT OF OR IN CONNECTION WITH THE LICENSE GRANTED
|
||||
UNDER THIS AGREEMENT INCLUDING, WITHOUT LIMITATION, LOSS OF USE,
|
||||
LOSS OF DATA, LOSS OF INCOME OR PROFIT, OR OTHER LOSSES SUSTAINED AS
|
||||
A RESULT OF INJURY TO ANY PERSON, OR LOSS OF OR DAMAGE TO PROPERTY,
|
||||
OR CLAIMS OF THIRD PARTIES, EVEN IF THE COMPANY OR AN AUTHORIZED
|
||||
REPRESENTATIVE OF THE COMPANY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
|
||||
SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OF IMPLIED WARRANTIES
|
||||
OR LIABILITY FOR INCIDENTAL, INDIRECT, SPECIAL OR CONSEQUENTIAL
|
||||
DAMAGES, SO THE ABOVE LIMITATIONS MAY NOT ALWAYS APPLY. YOU MAY HAVE
|
||||
RIGHTS WHICH VARY IN ACCORDANCE WITH LOCAL LAW.
|
||||
|
||||
|
||||
ACKNOWLEDGMENT
|
||||
|
||||
YOU ACKNOWLEDGE THAT YOU HAVE READ THIS AGREEMENT, UNDERSTAND IT AND
|
||||
AGREE TO BE BOUND BY ITS TERMS AND CONDITIONS. YOU ALSO AGREE THAT
|
||||
THIS AGREEMENT IS THE COMPLETE AND EXCLUSIVE STATEMENT OF THE
|
||||
AGREEMENT BETWEEN YOU AND THE COMPANY AND SUPERSEDES ALL PROPOSALS
|
||||
OR PRIOR AGREEMENTS, ORAL OR WRITTEN, AND ANY OTHER COMMUNICATIONS
|
||||
BETWEEN YOU AND THE COMPANY OR ANY REPRESENTATIVE OF THE COMPANY
|
||||
RELATING TO THE SUBJECT MATTER OF THIS AGREEMENT.
|
||||
|
||||
Should you have any questions concerning this agreement or if you
|
||||
wish to contact the Company for any reason, please contact
|
||||
|
||||
Alan Apt (alan_apt@prenhall.com)
|
||||
Prentice Hall
|
||||
2629 Redwing Rd.
|
||||
Suite #260
|
||||
Ft.Collins,CO 80526
|
||||
|
|
@ -1,16 +0,0 @@
|
|||
# Makefile for sh
|
||||
|
||||
CFLAGS = -O2 #-D_POSIX_SOURCE
|
||||
LDFLAGS = -static
|
||||
|
||||
OBJ = sh1.o sh2.o sh3.o sh4.o sh5.o sh6.o
|
||||
|
||||
all: sh
|
||||
|
||||
sh: $(OBJ)
|
||||
cc $(LDFLAGS) -o $@ $(OBJ)
|
||||
|
||||
$(OBJ): sh.h
|
||||
|
||||
clean:
|
||||
rm -f sh *.o *.bak core
|
||||
|
|
@ -1,16 +0,0 @@
|
|||
Warsaw, 1998.10.21
|
||||
|
||||
This is a port of Minix /bin/sh shell.
|
||||
|
||||
It's quite limited, but also quite small. One of most serious
|
||||
limitations is lack of support for user-defined functions. Also,
|
||||
globbing should be implemented with our glob(3) - the version in
|
||||
sh4.c is rather primitive.
|
||||
|
||||
This is a copyrighted software - see the file LICENSE. In short,
|
||||
it allows you to use it for research and educational purposes only.
|
||||
|
||||
Andrzej Bialecki
|
||||
<abial@FreeBSD.org>
|
||||
|
||||
$Id: README,v 1.1 1998/10/21 17:36:28 abial Exp $
|
||||
|
|
@ -1,261 +0,0 @@
|
|||
.TH SH 1
|
||||
.SH NAME
|
||||
sh, ., break, case, cd, continue, eval, exec, exit, export, for, if, read, readonly, set, shift, trap, umask, wait, while \- shell
|
||||
.SH SYNOPSIS
|
||||
\fBsh\fR [\fB\-eiknqstvxu\fR] [\fB\-c \fIstr\fR] \fB[\fIfile\fR]\fR
|
||||
.br
|
||||
.de FL
|
||||
.TP
|
||||
\\fB\\$1\\fR
|
||||
\\$2
|
||||
..
|
||||
.de EX
|
||||
.TP 20
|
||||
\\fB\\$1\\fR
|
||||
# \\$2
|
||||
..
|
||||
.SH OPTIONS
|
||||
.FL "\-c" "Execute the commands in \fIstr\fR"
|
||||
.FL "\-e" "Quit on error"
|
||||
.FL "\-i" "Interactive mode; ignore QUIT, TERMINATE, INTERRUPT"
|
||||
.FL "\-k" "Look for name=value everywhere on command line"
|
||||
.FL "\-n" "Do not execute commands"
|
||||
.FL "\-q" "Change qflag from sig_ign to sig_del"
|
||||
.FL "\-s" "Read commands from standard input"
|
||||
.FL "\-t" "Exit after reading and executing one command"
|
||||
.FL "\-v" "Echo input lines as they are read"
|
||||
.FL "\-x" "Trace"
|
||||
.FL "\-u" "Unset variables"
|
||||
.SH EXAMPLES
|
||||
.EX "sh script" "Run a shell script"
|
||||
.SH DESCRIPTION
|
||||
.PP
|
||||
.I Sh
|
||||
is the shell, which forms the user's main interface with the system.
|
||||
On startup, the shell reads /etc/profile and $HOME/.profile, if they exist,
|
||||
and executes any commands they contain. The Minix shell has most of the
|
||||
features of the V7 (Bourne) shell, including redirection of input and output,
|
||||
pipes, magic characters, background processes, and shell scripts. A brief
|
||||
summary follows, but whole books have been written on shell programming alone.
|
||||
.LP
|
||||
Some of the more common notations are:
|
||||
.PP
|
||||
.in +2.45i
|
||||
.ta 2i 2.2i
|
||||
.ti -2.2i
|
||||
date # Regular command
|
||||
.ti -2.2i
|
||||
sort <file # Redirect \fIstdin\fR (standard input)
|
||||
.ti -2.2i
|
||||
sort <file1 >file2 # Redirect \fIstdin\fR and \fIstdout\fR
|
||||
.ti -2.2i
|
||||
cc file.c 2>error # Redirect \fIstderr\fR
|
||||
.ti -2.2i
|
||||
a.out >f 2>&1 # Combine standard output and standard error
|
||||
.ti -2.2i
|
||||
sort <file1 >>file2 # Append output to \fIfile2\fR
|
||||
.ti -2.2i
|
||||
sort <file1 >file2 & # Background job
|
||||
.ti -2.2i
|
||||
(ls \-l; a.out) & # Run two background commands sequentially
|
||||
.ti -2.2i
|
||||
sort <file | wc # Two-process pipeline
|
||||
.ti -2.2i
|
||||
sort <f | uniq | wc # Three-process pipeline
|
||||
.ti -2.2i
|
||||
ls \-l *.c # List all files ending in \fI.c\fR
|
||||
.ti -2.2i
|
||||
ls \-l [\fIa-c\fR]* # List all files beginning with \fIa\fR, \fIb\fR, or \fIc\fR
|
||||
.ti -2.2i
|
||||
ls \-l ? # List all one-character file names
|
||||
.ti -2.2i
|
||||
ls \e? # List the file whose name is question mark
|
||||
.ti -2.2i
|
||||
ls \(fm???\(fm # List the file whose name is three question marks
|
||||
.ti -2.2i
|
||||
v=/usr/ast # Set shell variable \fIv\fR
|
||||
.ti -2.2i
|
||||
ls \-l $v # Use shell variable \fIv\fR
|
||||
.ti -2.2i
|
||||
PS1=\(fmHi! \(fm # Change the primary prompt to \fIHi!\fR
|
||||
.ti -2.2i
|
||||
PS2=\(fmMore: \(fm # Change the secondary prompt to \fIMore:\fR
|
||||
.ti -2.2i
|
||||
ls \-l $HOME # List the home directory
|
||||
.ti -2.2i
|
||||
echo $PATH # Echo the search path
|
||||
.ti -2.2i
|
||||
echo $? # Echo exit status of previous command in decimal
|
||||
.ti -2.2i
|
||||
echo $$ # Echo shell's pid in decimal
|
||||
.ti -2.2i
|
||||
echo $! # Echo PID of last background process
|
||||
.ti -2.2i
|
||||
echo $# # Echo number of parameters (shell script)
|
||||
.ti -2.2i
|
||||
echo $2 # Echo second parameter (shell script)
|
||||
.ti -2.2i
|
||||
echo "$2" # Echo second parameter without expanding spaces
|
||||
.ti -2.2i
|
||||
echo $* # Echo all parameters (shell script)
|
||||
.ti -2.2i
|
||||
echo $@ # Echo all parameters (shell script)
|
||||
.ti -2.2i
|
||||
echo "$@" # Echo all parameters without expanding spaces
|
||||
.in -2.45i
|
||||
.LP
|
||||
The shell uses the following variables for specific purposes:
|
||||
.PP
|
||||
.in +2.25i
|
||||
.ta 2i
|
||||
.ti -2i
|
||||
SHELL the path of the current shell
|
||||
.ti -2i
|
||||
HOME the default value for the cd(1) command
|
||||
.ti -2i
|
||||
PATH the directories to be searched to find commands
|
||||
.ti -2i
|
||||
IFS the internal field separators for command strings
|
||||
.ti -2i
|
||||
PS1 the primary shell prompt
|
||||
.ti -2i
|
||||
PS2 the secondary shell prompt
|
||||
.in -2.25i
|
||||
.LP
|
||||
There are various forms of substitution on the shell command line:
|
||||
.PP
|
||||
.in +2.25i
|
||||
.ta 2i
|
||||
.ti -2i
|
||||
`...` Command string between back-quotes is replaced by its output
|
||||
.ti -2i
|
||||
"..." Permits variable substitution between quotes
|
||||
.ti -2i
|
||||
\&'...' Inhibits variable substitution between quotes
|
||||
.ti -2i
|
||||
$VAR Replaced by contents of variable VAR
|
||||
.ti -2i
|
||||
${VAR} Delimits variable VAR from any following string
|
||||
.in -2.25i
|
||||
.LP
|
||||
The expressions below depend on whether or not VAR has ever been set.
|
||||
If VAR has been set, they give:
|
||||
.PP
|
||||
.in +2.25i
|
||||
.ta 2i
|
||||
.ti -2i
|
||||
${VAR-str} Replace expression by VAR, else by str
|
||||
.ti -2i
|
||||
${VAR=str} Replace expression by VAR, else by str and set VAR to str
|
||||
.ti -2i
|
||||
${VAR?str} Replace expression by VAR, else print str and exit shell
|
||||
.ti -2i
|
||||
${VAR+str} Replace expression by str, else by null string
|
||||
.in -2.25i
|
||||
.LP
|
||||
If a colon is placed after VAR, the expressions depend on whether or not
|
||||
VAR is currently set and non-null.
|
||||
.LP
|
||||
The shell has a number of built-in commands:
|
||||
.PP
|
||||
.in +2.25i
|
||||
.ta 2i
|
||||
.ti -2i
|
||||
: return true status
|
||||
.ti -2i
|
||||
\&. fn execute shell script fn on current path
|
||||
.ti -2i
|
||||
break [n] break from a for, until or while loop; exit n levels
|
||||
.ti -2i
|
||||
continue [n] continue a for, until or while loop; resume nth loop
|
||||
.ti -2i
|
||||
cd [dir] change current working directory; move to $HOME
|
||||
.ti -2i
|
||||
eval cmd rescan cmd, performing substitutions
|
||||
.ti -2i
|
||||
eval rescan the current command line
|
||||
.ti -2i
|
||||
exec cmd execute cmd without creating a new process
|
||||
.ti -2i
|
||||
exec <|> with no command name, modify shell I/O
|
||||
.ti -2i
|
||||
exit [n] exit a shell program, with exit value n
|
||||
.ti -2i
|
||||
export [var] export var to shell's children; list exported variables
|
||||
.ti -2i
|
||||
pwd print the name of the current working directory
|
||||
.ti -2i
|
||||
read var read a line from stdin and assign to var
|
||||
.ti -2i
|
||||
readonly [var] make var readonly; list readonly variables
|
||||
.ti -2i
|
||||
set -f set shell flag (+f unsets flag)
|
||||
.ti -2i
|
||||
set str set positional parameter to str
|
||||
.ti -2i
|
||||
set show the current shell variables
|
||||
.ti -2i
|
||||
shift reassign positional parameters (except ${0}) one left
|
||||
.ti -2i
|
||||
times print accumulated user and system times for processes
|
||||
.ti -2i
|
||||
trap arg sigs trap signals sigs and run arg on receipt
|
||||
.ti -2i
|
||||
trap list trapped signals
|
||||
.ti -2i
|
||||
umask [n] set the user file creation mask; show the current umask
|
||||
.ti -2i
|
||||
wait [n] wait for process pid n; wait for all processes
|
||||
.in -2.25i
|
||||
.LP
|
||||
The shell also contains a programming language, which has the following
|
||||
operators and flow control statements:
|
||||
.PP
|
||||
.in +3.50i
|
||||
.ta 2i 3.25i
|
||||
.ti -3.25i
|
||||
# Comment The rest of the line is ignored
|
||||
.ti -3.25i
|
||||
= Assignment Set a shell variable
|
||||
.ti -3.25i
|
||||
&& Logical AND Execute second command only if first succeeds
|
||||
.ti -3.25i
|
||||
|| Logical OR Execute second command only if first fails
|
||||
.ti -3.25i
|
||||
(...) Group Execute enclosed commands before continuing
|
||||
.in -3.50i
|
||||
.PP
|
||||
.in +2.25i
|
||||
.ta 2i
|
||||
.ti -2i
|
||||
for For loop (for ... in ... do ... done)
|
||||
.ti -2i
|
||||
case Case statement ((case ... ) ... ;; ... esac)
|
||||
.ti -2i
|
||||
esac Case statement end
|
||||
.ti -2i
|
||||
while While loop (while ... do ... done)
|
||||
.ti -2i
|
||||
do Do/For/While loop start (do ... until ...)
|
||||
.ti -2i
|
||||
done For/While loop end
|
||||
.ti -2i
|
||||
if Conditional statement (if ... else ... elif ... fi)
|
||||
.ti -2i
|
||||
in For loop selection
|
||||
.ti -2i
|
||||
then Conditional statement start
|
||||
.ti -2i
|
||||
else Conditional statement alternative
|
||||
.ti -2i
|
||||
elif Conditional statement end
|
||||
.ti -2i
|
||||
until Do loop end
|
||||
.ti -2i
|
||||
fi Conditional statement end
|
||||
.in -2.25i
|
||||
.SH "SEE ALSO"
|
||||
.BR echo (1),
|
||||
.BR expr (1),
|
||||
.BR pwd (1),
|
||||
.BR true (1).
|
||||
|
|
@ -1,388 +0,0 @@
|
|||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <fcntl.h>
|
||||
|
||||
/* Need a way to have void used for ANSI, nothing for K&R. */
|
||||
#ifndef _ANSI
|
||||
#undef _VOID
|
||||
#define _VOID
|
||||
#endif
|
||||
|
||||
/* -------- sh.h -------- */
|
||||
/*
|
||||
* shell
|
||||
*/
|
||||
|
||||
#define LINELIM 2100
|
||||
#define NPUSH 8 /* limit to input nesting */
|
||||
|
||||
#define NOFILE 20 /* Number of open files */
|
||||
#define NUFILE 10 /* Number of user-accessible files */
|
||||
#define FDBASE 10 /* First file usable by Shell */
|
||||
|
||||
/*
|
||||
* values returned by wait
|
||||
*/
|
||||
#define WAITSIG(s) ((s)&0177)
|
||||
#define WAITVAL(s) (((s)>>8)&0377)
|
||||
#define WAITCORE(s) (((s)&0200)!=0)
|
||||
|
||||
/*
|
||||
* library and system defintions
|
||||
*/
|
||||
#ifdef __STDC__
|
||||
typedef void xint; /* base type of jmp_buf, for not broken compilers */
|
||||
#else
|
||||
typedef char * xint; /* base type of jmp_buf, for broken compilers */
|
||||
#endif
|
||||
|
||||
/*
|
||||
* shell components
|
||||
*/
|
||||
/* #include "area.h" */
|
||||
/* #include "word.h" */
|
||||
/* #include "io.h" */
|
||||
/* #include "var.h" */
|
||||
|
||||
#define QUOTE 0200
|
||||
|
||||
#define NOBLOCK ((struct op *)NULL)
|
||||
#define NOWORD ((char *)NULL)
|
||||
#define NOWORDS ((char **)NULL)
|
||||
#define NOPIPE ((int *)NULL)
|
||||
|
||||
/*
|
||||
* Description of a command or an operation on commands.
|
||||
* Might eventually use a union.
|
||||
*/
|
||||
struct op {
|
||||
int type; /* operation type, see below */
|
||||
char **words; /* arguments to a command */
|
||||
struct ioword **ioact; /* IO actions (eg, < > >>) */
|
||||
struct op *left;
|
||||
struct op *right;
|
||||
char *str; /* identifier for case and for */
|
||||
};
|
||||
|
||||
#define TCOM 1 /* command */
|
||||
#define TPAREN 2 /* (c-list) */
|
||||
#define TPIPE 3 /* a | b */
|
||||
#define TLIST 4 /* a [&;] b */
|
||||
#define TOR 5 /* || */
|
||||
#define TAND 6 /* && */
|
||||
#define TFOR 7
|
||||
#define TDO 8
|
||||
#define TCASE 9
|
||||
#define TIF 10
|
||||
#define TWHILE 11
|
||||
#define TUNTIL 12
|
||||
#define TELIF 13
|
||||
#define TPAT 14 /* pattern in case */
|
||||
#define TBRACE 15 /* {c-list} */
|
||||
#define TASYNC 16 /* c & */
|
||||
|
||||
/*
|
||||
* actions determining the environment of a process
|
||||
*/
|
||||
#define BIT(i) (1<<(i))
|
||||
#define FEXEC BIT(0) /* execute without forking */
|
||||
|
||||
/*
|
||||
* flags to control evaluation of words
|
||||
*/
|
||||
#define DOSUB 1 /* interpret $, `, and quotes */
|
||||
#define DOBLANK 2 /* perform blank interpretation */
|
||||
#define DOGLOB 4 /* interpret [?* */
|
||||
#define DOKEY 8 /* move words with `=' to 2nd arg. list */
|
||||
#define DOTRIM 16 /* trim resulting string */
|
||||
|
||||
#define DOALL (DOSUB|DOBLANK|DOGLOB|DOKEY|DOTRIM)
|
||||
|
||||
Extern char **dolv;
|
||||
Extern int dolc;
|
||||
Extern int exstat;
|
||||
Extern char gflg;
|
||||
Extern int talking; /* interactive (talking-type wireless) */
|
||||
Extern int execflg;
|
||||
Extern int multiline; /* \n changed to ; */
|
||||
Extern struct op *outtree; /* result from parser */
|
||||
|
||||
Extern xint *failpt;
|
||||
Extern xint *errpt;
|
||||
|
||||
struct brkcon {
|
||||
jmp_buf brkpt;
|
||||
struct brkcon *nextlev;
|
||||
} ;
|
||||
Extern struct brkcon *brklist;
|
||||
Extern int isbreak;
|
||||
|
||||
/*
|
||||
* redirection
|
||||
*/
|
||||
struct ioword {
|
||||
short io_unit; /* unit affected */
|
||||
short io_flag; /* action (below) */
|
||||
char *io_name; /* file name */
|
||||
};
|
||||
#define IOREAD 1 /* < */
|
||||
#define IOHERE 2 /* << (here file) */
|
||||
#define IOWRITE 4 /* > */
|
||||
#define IOCAT 8 /* >> */
|
||||
#define IOXHERE 16 /* ${}, ` in << */
|
||||
#define IODUP 32 /* >&digit */
|
||||
#define IOCLOSE 64 /* >&- */
|
||||
|
||||
#define IODEFAULT (-1) /* token for default IO unit */
|
||||
|
||||
Extern struct wdblock *wdlist;
|
||||
Extern struct wdblock *iolist;
|
||||
|
||||
/*
|
||||
* parsing & execution environment
|
||||
*/
|
||||
extern struct env {
|
||||
char *linep;
|
||||
struct io *iobase;
|
||||
struct io *iop;
|
||||
xint *errpt;
|
||||
int iofd;
|
||||
struct env *oenv;
|
||||
} e;
|
||||
|
||||
/*
|
||||
* flags:
|
||||
* -e: quit on error
|
||||
* -k: look for name=value everywhere on command line
|
||||
* -n: no execution
|
||||
* -t: exit after reading and executing one command
|
||||
* -v: echo as read
|
||||
* -x: trace
|
||||
* -u: unset variables net diagnostic
|
||||
*/
|
||||
extern char *flag;
|
||||
|
||||
extern char *null; /* null value for variable */
|
||||
extern int intr; /* interrupt pending */
|
||||
|
||||
Extern char *trap[_NSIG+1];
|
||||
Extern char ourtrap[_NSIG+1];
|
||||
Extern int trapset; /* trap pending */
|
||||
|
||||
extern int heedint; /* heed interrupt signals */
|
||||
|
||||
Extern int yynerrs; /* yacc */
|
||||
|
||||
Extern char line[LINELIM];
|
||||
extern char *elinep;
|
||||
|
||||
/*
|
||||
* other functions
|
||||
*/
|
||||
#ifdef __STDC__
|
||||
int (*inbuilt(char *s ))(void);
|
||||
#else
|
||||
int (*inbuilt())();
|
||||
#endif
|
||||
|
||||
#ifdef __FreeBSD__
|
||||
#define _PROTOTYPE(x,y) x ## y
|
||||
#endif
|
||||
|
||||
_PROTOTYPE(char *rexecve , (char *c , char **v , char **envp ));
|
||||
_PROTOTYPE(char *space , (int n ));
|
||||
_PROTOTYPE(char *strsave , (char *s , int a ));
|
||||
_PROTOTYPE(char *evalstr , (char *cp , int f ));
|
||||
_PROTOTYPE(char *putn , (int n ));
|
||||
_PROTOTYPE(char *itoa , (unsigned u , int n ));
|
||||
_PROTOTYPE(char *unquote , (char *as ));
|
||||
_PROTOTYPE(struct var *lookup , (char *n ));
|
||||
_PROTOTYPE(int rlookup , (char *n ));
|
||||
_PROTOTYPE(struct wdblock *glob , (char *cp , struct wdblock *wb ));
|
||||
_PROTOTYPE(int subgetc , (int ec , int quoted ));
|
||||
_PROTOTYPE(char **makenv , (void));
|
||||
_PROTOTYPE(char **eval , (char **ap , int f ));
|
||||
_PROTOTYPE(int setstatus , (int s ));
|
||||
_PROTOTYPE(int waitfor , (int lastpid , int canintr ));
|
||||
|
||||
_PROTOTYPE(void onintr , (int s )); /* SIGINT handler */
|
||||
|
||||
_PROTOTYPE(int newenv , (int f ));
|
||||
_PROTOTYPE(void quitenv , (void));
|
||||
_PROTOTYPE(void err , (char *s ));
|
||||
_PROTOTYPE(int anys , (char *s1 , char *s2 ));
|
||||
_PROTOTYPE(int any , (int c , char *s ));
|
||||
_PROTOTYPE(void next , (int f ));
|
||||
_PROTOTYPE(void setdash , (void));
|
||||
_PROTOTYPE(void onecommand , (void));
|
||||
_PROTOTYPE(void runtrap , (int i ));
|
||||
_PROTOTYPE(void xfree , (char *s ));
|
||||
_PROTOTYPE(int letter , (int c ));
|
||||
_PROTOTYPE(int digit , (int c ));
|
||||
_PROTOTYPE(int letnum , (int c ));
|
||||
_PROTOTYPE(int gmatch , (char *s , char *p ));
|
||||
|
||||
/*
|
||||
* error handling
|
||||
*/
|
||||
_PROTOTYPE(void leave , (void)); /* abort shell (or fail in subshell) */
|
||||
_PROTOTYPE(void fail , (void)); /* fail but return to process next command */
|
||||
_PROTOTYPE(void warn , (char *s ));
|
||||
_PROTOTYPE(void sig , (int i )); /* default signal handler */
|
||||
|
||||
/* -------- var.h -------- */
|
||||
|
||||
struct var {
|
||||
char *value;
|
||||
char *name;
|
||||
struct var *next;
|
||||
char status;
|
||||
};
|
||||
#define COPYV 1 /* flag to setval, suggesting copy */
|
||||
#define RONLY 01 /* variable is read-only */
|
||||
#define EXPORT 02 /* variable is to be exported */
|
||||
#define GETCELL 04 /* name & value space was got with getcell */
|
||||
|
||||
Extern struct var *vlist; /* dictionary */
|
||||
|
||||
Extern struct var *homedir; /* home directory */
|
||||
Extern struct var *prompt; /* main prompt */
|
||||
Extern struct var *cprompt; /* continuation prompt */
|
||||
Extern struct var *path; /* search path for commands */
|
||||
Extern struct var *shell; /* shell to interpret command files */
|
||||
Extern struct var *ifs; /* field separators */
|
||||
|
||||
_PROTOTYPE(int yyparse , (void));
|
||||
_PROTOTYPE(struct var *lookup , (char *n ));
|
||||
_PROTOTYPE(void setval , (struct var *vp , char *val ));
|
||||
_PROTOTYPE(void nameval , (struct var *vp , char *val , char *name ));
|
||||
_PROTOTYPE(void export , (struct var *vp ));
|
||||
_PROTOTYPE(void ronly , (struct var *vp ));
|
||||
_PROTOTYPE(int isassign , (char *s ));
|
||||
_PROTOTYPE(int checkname , (char *cp ));
|
||||
_PROTOTYPE(int assign , (char *s , int cf ));
|
||||
_PROTOTYPE(void putvlist , (int f , int out ));
|
||||
_PROTOTYPE(int eqname , (char *n1 , char *n2 ));
|
||||
|
||||
_PROTOTYPE(int execute , (struct op *t , int *pin , int *pout , int act ));
|
||||
|
||||
/* -------- io.h -------- */
|
||||
/* io buffer */
|
||||
struct iobuf {
|
||||
unsigned id; /* buffer id */
|
||||
char buf[512]; /* buffer */
|
||||
char *bufp; /* pointer into buffer */
|
||||
char *ebufp; /* pointer to end of buffer */
|
||||
};
|
||||
|
||||
/* possible arguments to an IO function */
|
||||
struct ioarg {
|
||||
char *aword;
|
||||
char **awordlist;
|
||||
int afile; /* file descriptor */
|
||||
unsigned afid; /* buffer id */
|
||||
long afpos; /* file position */
|
||||
struct iobuf *afbuf; /* buffer for this file */
|
||||
};
|
||||
Extern struct ioarg ioargstack[NPUSH];
|
||||
#define AFID_NOBUF (~0)
|
||||
#define AFID_ID 0
|
||||
|
||||
/* an input generator's state */
|
||||
struct io {
|
||||
int (*iofn)(_VOID);
|
||||
struct ioarg *argp;
|
||||
int peekc;
|
||||
char prev; /* previous character read by readc() */
|
||||
char nlcount; /* for `'s */
|
||||
char xchar; /* for `'s */
|
||||
char task; /* reason for pushed IO */
|
||||
};
|
||||
Extern struct io iostack[NPUSH];
|
||||
#define XOTHER 0 /* none of the below */
|
||||
#define XDOLL 1 /* expanding ${} */
|
||||
#define XGRAVE 2 /* expanding `'s */
|
||||
#define XIO 3 /* file IO */
|
||||
|
||||
/* in substitution */
|
||||
#define INSUB() (e.iop->task == XGRAVE || e.iop->task == XDOLL)
|
||||
|
||||
/*
|
||||
* input generators for IO structure
|
||||
*/
|
||||
_PROTOTYPE(int nlchar , (struct ioarg *ap ));
|
||||
_PROTOTYPE(int strchar , (struct ioarg *ap ));
|
||||
_PROTOTYPE(int qstrchar , (struct ioarg *ap ));
|
||||
_PROTOTYPE(int filechar , (struct ioarg *ap ));
|
||||
_PROTOTYPE(int herechar , (struct ioarg *ap ));
|
||||
_PROTOTYPE(int linechar , (struct ioarg *ap ));
|
||||
_PROTOTYPE(int gravechar , (struct ioarg *ap , struct io *iop ));
|
||||
_PROTOTYPE(int qgravechar , (struct ioarg *ap , struct io *iop ));
|
||||
_PROTOTYPE(int dolchar , (struct ioarg *ap ));
|
||||
_PROTOTYPE(int wdchar , (struct ioarg *ap ));
|
||||
_PROTOTYPE(void scraphere , (void));
|
||||
_PROTOTYPE(void freehere , (int area ));
|
||||
_PROTOTYPE(void gethere , (void));
|
||||
_PROTOTYPE(void markhere , (char *s , struct ioword *iop ));
|
||||
_PROTOTYPE(int herein , (char *hname , int xdoll ));
|
||||
_PROTOTYPE(int run , (struct ioarg *argp , int (*f)(_VOID)));
|
||||
|
||||
/*
|
||||
* IO functions
|
||||
*/
|
||||
_PROTOTYPE(int eofc , (void));
|
||||
_PROTOTYPE(int getc , (int ec ));
|
||||
_PROTOTYPE(int readc , (void));
|
||||
_PROTOTYPE(void unget , (int c ));
|
||||
_PROTOTYPE(void ioecho , (int c ));
|
||||
_PROTOTYPE(void prs , (char *s ));
|
||||
_PROTOTYPE(void putc , (int c ));
|
||||
_PROTOTYPE(void prn , (unsigned u ));
|
||||
_PROTOTYPE(void closef , (int i ));
|
||||
_PROTOTYPE(void closeall , (void));
|
||||
|
||||
/*
|
||||
* IO control
|
||||
*/
|
||||
_PROTOTYPE(void pushio , (struct ioarg *argp , int (*fn)(_VOID)));
|
||||
_PROTOTYPE(int remap , (int fd ));
|
||||
_PROTOTYPE(int openpipe , (int *pv ));
|
||||
_PROTOTYPE(void closepipe , (int *pv ));
|
||||
_PROTOTYPE(struct io *setbase , (struct io *ip ));
|
||||
|
||||
extern struct ioarg temparg; /* temporary for PUSHIO */
|
||||
#define PUSHIO(what,arg,gen) ((temparg.what = (arg)),pushio(&temparg,(gen)))
|
||||
#define RUN(what,arg,gen) ((temparg.what = (arg)), run(&temparg,(gen)))
|
||||
|
||||
/* -------- word.h -------- */
|
||||
#ifndef WORD_H
|
||||
#define WORD_H 1
|
||||
struct wdblock {
|
||||
short w_bsize;
|
||||
short w_nword;
|
||||
/* bounds are arbitrary */
|
||||
char *w_words[1];
|
||||
};
|
||||
|
||||
_PROTOTYPE(struct wdblock *addword , (char *wd , struct wdblock *wb ));
|
||||
_PROTOTYPE(struct wdblock *newword , (int nw ));
|
||||
_PROTOTYPE(char **getwords , (struct wdblock *wb ));
|
||||
#endif
|
||||
|
||||
/* -------- area.h -------- */
|
||||
|
||||
/*
|
||||
* storage allocation
|
||||
*/
|
||||
_PROTOTYPE(char *getcell , (unsigned nbytes ));
|
||||
_PROTOTYPE(void garbage , (void));
|
||||
_PROTOTYPE(void setarea , (char *cp , int a ));
|
||||
_PROTOTYPE(int getarea , (char *cp ));
|
||||
_PROTOTYPE(void freearea , (int a ));
|
||||
_PROTOTYPE(void freecell , (char *cp ));
|
||||
|
||||
Extern int areanum; /* current allocation area */
|
||||
|
||||
#define NEW(type) (type *)getcell(sizeof(type))
|
||||
#define DELETE(obj) freecell((char *)obj)
|
||||
|
|
@ -1,953 +0,0 @@
|
|||
#define Extern extern
|
||||
#include <sys/types.h>
|
||||
#include <signal.h>
|
||||
#define _NSIG NSIG
|
||||
#include <errno.h>
|
||||
#include <setjmp.h>
|
||||
#include "sh.h"
|
||||
/* -------- sh.c -------- */
|
||||
/*
|
||||
* shell
|
||||
*/
|
||||
|
||||
/* #include "sh.h" */
|
||||
|
||||
int intr;
|
||||
int inparse;
|
||||
char flags['z'-'a'+1];
|
||||
char *flag = flags-'a';
|
||||
char *elinep = line+sizeof(line)-5;
|
||||
char *null = "";
|
||||
int heedint =1;
|
||||
struct env e ={line, iostack, iostack-1,
|
||||
(xint *)NULL, FDBASE, (struct env *)NULL};
|
||||
|
||||
extern char **environ; /* environment pointer */
|
||||
|
||||
/*
|
||||
* default shell, search rules
|
||||
*/
|
||||
char shellname[] = "/bin/sh";
|
||||
char search[] = ":/bin:/usr/bin";
|
||||
|
||||
_PROTOTYPE(void (*qflag), (int)) = SIG_IGN;
|
||||
|
||||
_PROTOTYPE(int main, (int argc, char **argv ));
|
||||
_PROTOTYPE(int newfile, (char *s ));
|
||||
_PROTOTYPE(static char *findeq, (char *cp ));
|
||||
_PROTOTYPE(static char *cclass, (char *p, int sub ));
|
||||
_PROTOTYPE(void initarea, (void));
|
||||
|
||||
int main(argc, argv)
|
||||
int argc;
|
||||
register char **argv;
|
||||
{
|
||||
register int f;
|
||||
register char *s;
|
||||
int cflag;
|
||||
char *name, **ap;
|
||||
int (*iof)();
|
||||
|
||||
initarea();
|
||||
if ((ap = environ) != NULL) {
|
||||
while (*ap)
|
||||
assign(*ap++, !COPYV);
|
||||
for (ap = environ; *ap;)
|
||||
export(lookup(*ap++));
|
||||
}
|
||||
closeall();
|
||||
areanum = 1;
|
||||
|
||||
shell = lookup("SHELL");
|
||||
if (shell->value == null)
|
||||
setval(shell, shellname);
|
||||
export(shell);
|
||||
|
||||
homedir = lookup("HOME");
|
||||
if (homedir->value == null)
|
||||
setval(homedir, "/");
|
||||
export(homedir);
|
||||
|
||||
setval(lookup("$"), itoa(getpid(), 5));
|
||||
|
||||
path = lookup("PATH");
|
||||
if (path->value == null)
|
||||
setval(path, search);
|
||||
export(path);
|
||||
|
||||
ifs = lookup("IFS");
|
||||
if (ifs->value == null)
|
||||
setval(ifs, " \t\n");
|
||||
|
||||
prompt = lookup("PS1");
|
||||
if (prompt->value == null)
|
||||
#ifndef UNIXSHELL
|
||||
setval(prompt, "$ ");
|
||||
#else
|
||||
setval(prompt, "% ");
|
||||
#endif
|
||||
|
||||
if (geteuid() == 0) {
|
||||
setval(prompt, "# ");
|
||||
prompt->status &= ~EXPORT;
|
||||
}
|
||||
cprompt = lookup("PS2");
|
||||
if (cprompt->value == null)
|
||||
setval(cprompt, "> ");
|
||||
|
||||
iof = filechar;
|
||||
cflag = 0;
|
||||
name = *argv++;
|
||||
if (--argc >= 1) {
|
||||
if(argv[0][0] == '-' && argv[0][1] != '\0') {
|
||||
for (s = argv[0]+1; *s; s++)
|
||||
switch (*s) {
|
||||
case 'c':
|
||||
prompt->status &= ~EXPORT;
|
||||
cprompt->status &= ~EXPORT;
|
||||
setval(prompt, "");
|
||||
setval(cprompt, "");
|
||||
cflag = 1;
|
||||
if (--argc > 0)
|
||||
PUSHIO(aword, *++argv, iof = nlchar);
|
||||
break;
|
||||
|
||||
case 'q':
|
||||
qflag = SIG_DFL;
|
||||
break;
|
||||
|
||||
case 's':
|
||||
/* standard input */
|
||||
break;
|
||||
|
||||
case 't':
|
||||
prompt->status &= ~EXPORT;
|
||||
setval(prompt, "");
|
||||
iof = linechar;
|
||||
break;
|
||||
|
||||
case 'i':
|
||||
talking++;
|
||||
default:
|
||||
if (*s>='a' && *s<='z')
|
||||
flag[*s]++;
|
||||
}
|
||||
} else {
|
||||
argv--;
|
||||
argc++;
|
||||
}
|
||||
if (iof == filechar && --argc > 0) {
|
||||
setval(prompt, "");
|
||||
setval(cprompt, "");
|
||||
prompt->status &= ~EXPORT;
|
||||
cprompt->status &= ~EXPORT;
|
||||
if (newfile(name = *++argv))
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
setdash();
|
||||
if (e.iop < iostack) {
|
||||
PUSHIO(afile, 0, iof);
|
||||
if (isatty(0) && isatty(1) && !cflag)
|
||||
talking++;
|
||||
}
|
||||
signal(SIGQUIT, qflag);
|
||||
if (name && name[0] == '-') {
|
||||
talking++;
|
||||
if ((f = open(".profile", 0)) >= 0)
|
||||
next(remap(f));
|
||||
if ((f = open("/etc/profile", 0)) >= 0)
|
||||
next(remap(f));
|
||||
}
|
||||
if (talking)
|
||||
signal(SIGTERM, sig);
|
||||
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
|
||||
signal(SIGINT, onintr);
|
||||
dolv = argv;
|
||||
dolc = argc;
|
||||
dolv[0] = name;
|
||||
if (dolc > 1)
|
||||
for (ap = ++argv; --argc > 0;)
|
||||
if (assign(*ap = *argv++, !COPYV))
|
||||
dolc--; /* keyword */
|
||||
else
|
||||
ap++;
|
||||
setval(lookup("#"), putn((--dolc < 0) ? (dolc = 0) : dolc));
|
||||
|
||||
for (;;) {
|
||||
if (talking && e.iop <= iostack)
|
||||
prs(prompt->value);
|
||||
onecommand();
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
setdash()
|
||||
{
|
||||
register char *cp, c;
|
||||
char m['z'-'a'+1];
|
||||
|
||||
cp = m;
|
||||
for (c='a'; c<='z'; c++)
|
||||
if (flag[c])
|
||||
*cp++ = c;
|
||||
*cp = 0;
|
||||
setval(lookup("-"), m);
|
||||
}
|
||||
|
||||
int
|
||||
newfile(s)
|
||||
register char *s;
|
||||
{
|
||||
register f;
|
||||
|
||||
if (strcmp(s, "-") != 0) {
|
||||
f = open(s, 0);
|
||||
if (f < 0) {
|
||||
prs(s);
|
||||
err(": cannot open");
|
||||
return(1);
|
||||
}
|
||||
} else
|
||||
f = 0;
|
||||
next(remap(f));
|
||||
return(0);
|
||||
}
|
||||
|
||||
void
|
||||
onecommand()
|
||||
{
|
||||
register i;
|
||||
jmp_buf m1;
|
||||
|
||||
while (e.oenv)
|
||||
quitenv();
|
||||
areanum = 1;
|
||||
freehere(areanum);
|
||||
freearea(areanum);
|
||||
garbage();
|
||||
wdlist = 0;
|
||||
iolist = 0;
|
||||
e.errpt = 0;
|
||||
e.linep = line;
|
||||
yynerrs = 0;
|
||||
multiline = 0;
|
||||
inparse = 1;
|
||||
intr = 0;
|
||||
execflg = 0;
|
||||
setjmp(failpt = m1); /* Bruce Evans' fix */
|
||||
if (setjmp(failpt = m1) || yyparse() || intr) {
|
||||
while (e.oenv)
|
||||
quitenv();
|
||||
scraphere();
|
||||
if (!talking && intr)
|
||||
leave();
|
||||
inparse = 0;
|
||||
intr = 0;
|
||||
return;
|
||||
}
|
||||
inparse = 0;
|
||||
brklist = 0;
|
||||
intr = 0;
|
||||
execflg = 0;
|
||||
if (!flag['n'])
|
||||
execute(outtree, NOPIPE, NOPIPE, 0);
|
||||
if (!talking && intr) {
|
||||
execflg = 0;
|
||||
leave();
|
||||
}
|
||||
if ((i = trapset) != 0) {
|
||||
trapset = 0;
|
||||
runtrap(i);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
fail()
|
||||
{
|
||||
longjmp(failpt, 1);
|
||||
/* NOTREACHED */
|
||||
}
|
||||
|
||||
void
|
||||
leave()
|
||||
{
|
||||
if (execflg)
|
||||
fail();
|
||||
scraphere();
|
||||
freehere(1);
|
||||
runtrap(0);
|
||||
exit(exstat);
|
||||
/* NOTREACHED */
|
||||
}
|
||||
|
||||
void
|
||||
warn(s)
|
||||
register char *s;
|
||||
{
|
||||
if(*s) {
|
||||
prs(s);
|
||||
exstat = -1;
|
||||
}
|
||||
prs("\n");
|
||||
if (flag['e'])
|
||||
leave();
|
||||
}
|
||||
|
||||
void
|
||||
err(s)
|
||||
char *s;
|
||||
{
|
||||
warn(s);
|
||||
if (flag['n'])
|
||||
return;
|
||||
if (!talking)
|
||||
leave();
|
||||
if (e.errpt)
|
||||
longjmp(e.errpt, 1);
|
||||
closeall();
|
||||
e.iop = e.iobase = iostack;
|
||||
}
|
||||
|
||||
int
|
||||
newenv(f)
|
||||
int f;
|
||||
{
|
||||
register struct env *ep;
|
||||
|
||||
if (f) {
|
||||
quitenv();
|
||||
return(1);
|
||||
}
|
||||
ep = (struct env *) space(sizeof(*ep));
|
||||
if (ep == NULL) {
|
||||
while (e.oenv)
|
||||
quitenv();
|
||||
fail();
|
||||
}
|
||||
*ep = e;
|
||||
e.oenv = ep;
|
||||
e.errpt = errpt;
|
||||
return(0);
|
||||
}
|
||||
|
||||
void
|
||||
quitenv()
|
||||
{
|
||||
register struct env *ep;
|
||||
register fd;
|
||||
|
||||
if ((ep = e.oenv) != NULL) {
|
||||
fd = e.iofd;
|
||||
e = *ep;
|
||||
/* should close `'d files */
|
||||
DELETE(ep);
|
||||
while (--fd >= e.iofd)
|
||||
close(fd);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Is any character from s1 in s2?
|
||||
*/
|
||||
int
|
||||
anys(s1, s2)
|
||||
register char *s1, *s2;
|
||||
{
|
||||
while (*s1)
|
||||
if (any(*s1++, s2))
|
||||
return(1);
|
||||
return(0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Is character c in s?
|
||||
*/
|
||||
int
|
||||
any(c, s)
|
||||
register int c;
|
||||
register char *s;
|
||||
{
|
||||
while (*s)
|
||||
if (*s++ == c)
|
||||
return(1);
|
||||
return(0);
|
||||
}
|
||||
|
||||
char *
|
||||
putn(n)
|
||||
register int n;
|
||||
{
|
||||
return(itoa(n, -1));
|
||||
}
|
||||
|
||||
char *
|
||||
itoa(u, n)
|
||||
register unsigned u;
|
||||
int n;
|
||||
{
|
||||
register char *cp;
|
||||
static char s[20];
|
||||
int m;
|
||||
|
||||
m = 0;
|
||||
if (n < 0 && (int) u < 0) {
|
||||
m++;
|
||||
u = -u;
|
||||
}
|
||||
cp = s+sizeof(s);
|
||||
*--cp = 0;
|
||||
do {
|
||||
*--cp = u%10 + '0';
|
||||
u /= 10;
|
||||
} while (--n > 0 || u);
|
||||
if (m)
|
||||
*--cp = '-';
|
||||
return(cp);
|
||||
}
|
||||
|
||||
void
|
||||
next(f)
|
||||
int f;
|
||||
{
|
||||
PUSHIO(afile, f, filechar);
|
||||
}
|
||||
|
||||
void
|
||||
onintr(s)
|
||||
int s; /* ANSI C requires a parameter */
|
||||
{
|
||||
signal(SIGINT, onintr);
|
||||
intr = 1;
|
||||
if (talking) {
|
||||
if (inparse) {
|
||||
prs("\n");
|
||||
fail();
|
||||
}
|
||||
}
|
||||
else if (heedint) {
|
||||
execflg = 0;
|
||||
leave();
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
letter(c)
|
||||
register c;
|
||||
{
|
||||
return((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_');
|
||||
}
|
||||
|
||||
int
|
||||
digit(c)
|
||||
register c;
|
||||
{
|
||||
return(c >= '0' && c <= '9');
|
||||
}
|
||||
|
||||
int
|
||||
letnum(c)
|
||||
register c;
|
||||
{
|
||||
return(letter(c) || digit(c));
|
||||
}
|
||||
|
||||
char *
|
||||
space(n)
|
||||
int n;
|
||||
{
|
||||
register char *cp;
|
||||
|
||||
if ((cp = getcell(n)) == 0)
|
||||
err("out of string space");
|
||||
return(cp);
|
||||
}
|
||||
|
||||
char *
|
||||
strsave(s, a)
|
||||
register char *s;
|
||||
int a;
|
||||
{
|
||||
register char *cp, *xp;
|
||||
|
||||
if ((cp = space(strlen(s)+1)) != NULL) {
|
||||
setarea((char *)cp, a);
|
||||
for (xp = cp; (*xp++ = *s++) != '\0';)
|
||||
;
|
||||
return(cp);
|
||||
}
|
||||
return("");
|
||||
}
|
||||
|
||||
void
|
||||
xfree(s)
|
||||
register char *s;
|
||||
{
|
||||
DELETE(s);
|
||||
}
|
||||
|
||||
/*
|
||||
* trap handling
|
||||
*/
|
||||
void
|
||||
sig(i)
|
||||
register int i;
|
||||
{
|
||||
trapset = i;
|
||||
signal(i, sig);
|
||||
}
|
||||
|
||||
void runtrap(i)
|
||||
int i;
|
||||
{
|
||||
char *trapstr;
|
||||
|
||||
if ((trapstr = trap[i]) == NULL)
|
||||
return;
|
||||
if (i == 0)
|
||||
trap[i] = 0;
|
||||
RUN(aword, trapstr, nlchar);
|
||||
}
|
||||
|
||||
/* -------- var.c -------- */
|
||||
/* #include "sh.h" */
|
||||
|
||||
/*
|
||||
* Find the given name in the dictionary
|
||||
* and return its value. If the name was
|
||||
* not previously there, enter it now and
|
||||
* return a null value.
|
||||
*/
|
||||
struct var *
|
||||
lookup(n)
|
||||
register char *n;
|
||||
{
|
||||
register struct var *vp;
|
||||
register char *cp;
|
||||
register int c;
|
||||
static struct var dummy;
|
||||
|
||||
if (digit(*n)) {
|
||||
dummy.name = n;
|
||||
for (c = 0; digit(*n) && c < 1000; n++)
|
||||
c = c*10 + *n-'0';
|
||||
dummy.status = RONLY;
|
||||
dummy.value = c <= dolc? dolv[c]: null;
|
||||
return(&dummy);
|
||||
}
|
||||
for (vp = vlist; vp; vp = vp->next)
|
||||
if (eqname(vp->name, n))
|
||||
return(vp);
|
||||
cp = findeq(n);
|
||||
vp = (struct var *)space(sizeof(*vp));
|
||||
if (vp == 0 || (vp->name = space((int)(cp-n)+2)) == 0) {
|
||||
dummy.name = dummy.value = "";
|
||||
return(&dummy);
|
||||
}
|
||||
for (cp = vp->name; (*cp = *n++) && *cp != '='; cp++)
|
||||
;
|
||||
if (*cp == 0)
|
||||
*cp = '=';
|
||||
*++cp = 0;
|
||||
setarea((char *)vp, 0);
|
||||
setarea((char *)vp->name, 0);
|
||||
vp->value = null;
|
||||
vp->next = vlist;
|
||||
vp->status = GETCELL;
|
||||
vlist = vp;
|
||||
return(vp);
|
||||
}
|
||||
|
||||
/*
|
||||
* give variable at `vp' the value `val'.
|
||||
*/
|
||||
void
|
||||
setval(vp, val)
|
||||
struct var *vp;
|
||||
char *val;
|
||||
{
|
||||
nameval(vp, val, (char *)NULL);
|
||||
}
|
||||
|
||||
/*
|
||||
* if name is not NULL, it must be
|
||||
* a prefix of the space `val',
|
||||
* and end with `='.
|
||||
* this is all so that exporting
|
||||
* values is reasonably painless.
|
||||
*/
|
||||
void
|
||||
nameval(vp, val, name)
|
||||
register struct var *vp;
|
||||
char *val, *name;
|
||||
{
|
||||
register char *cp, *xp;
|
||||
char *nv;
|
||||
int fl;
|
||||
|
||||
if (vp->status & RONLY) {
|
||||
for (xp = vp->name; *xp && *xp != '=';)
|
||||
putc(*xp++);
|
||||
err(" is read-only");
|
||||
return;
|
||||
}
|
||||
fl = 0;
|
||||
if (name == NULL) {
|
||||
xp = space(strlen(vp->name)+strlen(val)+2);
|
||||
if (xp == 0)
|
||||
return;
|
||||
/* make string: name=value */
|
||||
setarea((char *)xp, 0);
|
||||
name = xp;
|
||||
for (cp = vp->name; (*xp = *cp++) && *xp!='='; xp++)
|
||||
;
|
||||
if (*xp++ == 0)
|
||||
xp[-1] = '=';
|
||||
nv = xp;
|
||||
for (cp = val; (*xp++ = *cp++) != '\0';)
|
||||
;
|
||||
val = nv;
|
||||
fl = GETCELL;
|
||||
}
|
||||
if (vp->status & GETCELL)
|
||||
xfree(vp->name); /* form new string `name=value' */
|
||||
vp->name = name;
|
||||
vp->value = val;
|
||||
vp->status |= fl;
|
||||
}
|
||||
|
||||
void
|
||||
export(vp)
|
||||
struct var *vp;
|
||||
{
|
||||
vp->status |= EXPORT;
|
||||
}
|
||||
|
||||
void
|
||||
ronly(vp)
|
||||
struct var *vp;
|
||||
{
|
||||
if (letter(vp->name[0])) /* not an internal symbol ($# etc) */
|
||||
vp->status |= RONLY;
|
||||
}
|
||||
|
||||
int
|
||||
isassign(s)
|
||||
register char *s;
|
||||
{
|
||||
if (!letter((int)*s))
|
||||
return(0);
|
||||
for (; *s != '='; s++)
|
||||
if (*s == 0 || !letnum(*s))
|
||||
return(0);
|
||||
return(1);
|
||||
}
|
||||
|
||||
int
|
||||
assign(s, cf)
|
||||
register char *s;
|
||||
int cf;
|
||||
{
|
||||
register char *cp;
|
||||
struct var *vp;
|
||||
|
||||
if (!letter(*s))
|
||||
return(0);
|
||||
for (cp = s; *cp != '='; cp++)
|
||||
if (*cp == 0 || !letnum(*cp))
|
||||
return(0);
|
||||
vp = lookup(s);
|
||||
nameval(vp, ++cp, cf == COPYV? (char *)NULL: s);
|
||||
if (cf != COPYV)
|
||||
vp->status &= ~GETCELL;
|
||||
return(1);
|
||||
}
|
||||
|
||||
int
|
||||
checkname(cp)
|
||||
register char *cp;
|
||||
{
|
||||
if (!letter(*cp++))
|
||||
return(0);
|
||||
while (*cp)
|
||||
if (!letnum(*cp++))
|
||||
return(0);
|
||||
return(1);
|
||||
}
|
||||
|
||||
void
|
||||
putvlist(f, out)
|
||||
register int f, out;
|
||||
{
|
||||
register struct var *vp;
|
||||
|
||||
for (vp = vlist; vp; vp = vp->next)
|
||||
if (vp->status & f && letter(*vp->name)) {
|
||||
if (vp->status & EXPORT)
|
||||
write(out, "export ", 7);
|
||||
if (vp->status & RONLY)
|
||||
write(out, "readonly ", 9);
|
||||
write(out, vp->name, (int)(findeq(vp->name) - vp->name));
|
||||
write(out, "\n", 1);
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
eqname(n1, n2)
|
||||
register char *n1, *n2;
|
||||
{
|
||||
for (; *n1 != '=' && *n1 != 0; n1++)
|
||||
if (*n2++ != *n1)
|
||||
return(0);
|
||||
return(*n2 == 0 || *n2 == '=');
|
||||
}
|
||||
|
||||
static char *
|
||||
findeq(cp)
|
||||
register char *cp;
|
||||
{
|
||||
while (*cp != '\0' && *cp != '=')
|
||||
cp++;
|
||||
return(cp);
|
||||
}
|
||||
|
||||
/* -------- gmatch.c -------- */
|
||||
/*
|
||||
* int gmatch(string, pattern)
|
||||
* char *string, *pattern;
|
||||
*
|
||||
* Match a pattern as in sh(1).
|
||||
*/
|
||||
|
||||
#define CMASK 0377
|
||||
#define QUOTE 0200
|
||||
#define QMASK (CMASK&~QUOTE)
|
||||
#define NOT '!' /* might use ^ */
|
||||
|
||||
int
|
||||
gmatch(s, p)
|
||||
register char *s, *p;
|
||||
{
|
||||
register int sc, pc;
|
||||
|
||||
if (s == NULL || p == NULL)
|
||||
return(0);
|
||||
while ((pc = *p++ & CMASK) != '\0') {
|
||||
sc = *s++ & QMASK;
|
||||
switch (pc) {
|
||||
case '[':
|
||||
if ((p = cclass(p, sc)) == NULL)
|
||||
return(0);
|
||||
break;
|
||||
|
||||
case '?':
|
||||
if (sc == 0)
|
||||
return(0);
|
||||
break;
|
||||
|
||||
case '*':
|
||||
s--;
|
||||
do {
|
||||
if (*p == '\0' || gmatch(s, p))
|
||||
return(1);
|
||||
} while (*s++ != '\0');
|
||||
return(0);
|
||||
|
||||
default:
|
||||
if (sc != (pc&~QUOTE))
|
||||
return(0);
|
||||
}
|
||||
}
|
||||
return(*s == 0);
|
||||
}
|
||||
|
||||
static char *
|
||||
cclass(p, sub)
|
||||
register char *p;
|
||||
register int sub;
|
||||
{
|
||||
register int c, d, not, found;
|
||||
|
||||
if ((not = *p == NOT) != 0)
|
||||
p++;
|
||||
found = not;
|
||||
do {
|
||||
if (*p == '\0')
|
||||
return((char *)NULL);
|
||||
c = *p & CMASK;
|
||||
if (p[1] == '-' && p[2] != ']') {
|
||||
d = p[2] & CMASK;
|
||||
p++;
|
||||
} else
|
||||
d = c;
|
||||
if (c == sub || (c <= sub && sub <= d))
|
||||
found = !not;
|
||||
} while (*++p != ']');
|
||||
return(found? p+1: (char *)NULL);
|
||||
}
|
||||
|
||||
/* -------- area.c -------- */
|
||||
#define REGSIZE sizeof(struct region)
|
||||
#define GROWBY 256
|
||||
#undef SHRINKBY 64
|
||||
#define FREE 32767
|
||||
#define BUSY 0
|
||||
#define ALIGN (sizeof(int)-1)
|
||||
|
||||
/* #include "area.h" */
|
||||
|
||||
struct region {
|
||||
struct region *next;
|
||||
int area;
|
||||
};
|
||||
|
||||
/*
|
||||
* All memory between (char *)areabot and (char *)(areatop+1) is
|
||||
* exclusively administered by the area management routines.
|
||||
* It is assumed that sbrk() and brk() manipulate the high end.
|
||||
*/
|
||||
static struct region *areabot; /* bottom of area */
|
||||
static struct region *areatop; /* top of area */
|
||||
static struct region *areanxt; /* starting point of scan */
|
||||
|
||||
void
|
||||
initarea()
|
||||
{
|
||||
while ((int)sbrk(0) & ALIGN)
|
||||
sbrk(1);
|
||||
areabot = (struct region *)sbrk(REGSIZE);
|
||||
areabot->next = areabot;
|
||||
areabot->area = BUSY;
|
||||
areatop = areabot;
|
||||
areanxt = areabot;
|
||||
}
|
||||
|
||||
char *
|
||||
getcell(nbytes)
|
||||
unsigned nbytes;
|
||||
{
|
||||
register int nregio;
|
||||
register struct region *p, *q;
|
||||
register i;
|
||||
|
||||
if (nbytes == 0)
|
||||
abort(); /* silly and defeats the algorithm */
|
||||
/*
|
||||
* round upwards and add administration area
|
||||
*/
|
||||
nregio = (nbytes+(REGSIZE-1))/REGSIZE + 1;
|
||||
for (p = areanxt;;) {
|
||||
if (p->area > areanum) {
|
||||
/*
|
||||
* merge free cells
|
||||
*/
|
||||
while ((q = p->next)->area > areanum && q != areanxt)
|
||||
p->next = q->next;
|
||||
/*
|
||||
* exit loop if cell big enough
|
||||
*/
|
||||
if (q >= p + nregio)
|
||||
goto found;
|
||||
}
|
||||
p = p->next;
|
||||
if (p == areanxt)
|
||||
break;
|
||||
}
|
||||
i = nregio >= GROWBY ? nregio : GROWBY;
|
||||
p = (struct region *)sbrk(i * REGSIZE);
|
||||
if (p == (struct region *)-1)
|
||||
return((char *)NULL);
|
||||
p--;
|
||||
if (p != areatop)
|
||||
abort(); /* allocated areas are contiguous */
|
||||
q = p + i;
|
||||
p->next = q;
|
||||
p->area = FREE;
|
||||
q->next = areabot;
|
||||
q->area = BUSY;
|
||||
areatop = q;
|
||||
found:
|
||||
/*
|
||||
* we found a FREE area big enough, pointed to by 'p', and up to 'q'
|
||||
*/
|
||||
areanxt = p + nregio;
|
||||
if (areanxt < q) {
|
||||
/*
|
||||
* split into requested area and rest
|
||||
*/
|
||||
if (areanxt+1 > q)
|
||||
abort(); /* insufficient space left for admin */
|
||||
areanxt->next = q;
|
||||
areanxt->area = FREE;
|
||||
p->next = areanxt;
|
||||
}
|
||||
p->area = areanum;
|
||||
return((char *)(p+1));
|
||||
}
|
||||
|
||||
void
|
||||
freecell(cp)
|
||||
char *cp;
|
||||
{
|
||||
register struct region *p;
|
||||
|
||||
if ((p = (struct region *)cp) != NULL) {
|
||||
p--;
|
||||
if (p < areanxt)
|
||||
areanxt = p;
|
||||
p->area = FREE;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
freearea(a)
|
||||
register int a;
|
||||
{
|
||||
register struct region *p, *top;
|
||||
|
||||
top = areatop;
|
||||
for (p = areabot; p != top; p = p->next)
|
||||
if (p->area >= a)
|
||||
p->area = FREE;
|
||||
}
|
||||
|
||||
void
|
||||
setarea(cp,a)
|
||||
char *cp;
|
||||
int a;
|
||||
{
|
||||
register struct region *p;
|
||||
|
||||
if ((p = (struct region *)cp) != NULL)
|
||||
(p-1)->area = a;
|
||||
}
|
||||
|
||||
int
|
||||
getarea(cp)
|
||||
char *cp;
|
||||
{
|
||||
return ((struct region*)cp-1)->area;
|
||||
}
|
||||
|
||||
void
|
||||
garbage()
|
||||
{
|
||||
register struct region *p, *q, *top;
|
||||
|
||||
top = areatop;
|
||||
for (p = areabot; p != top; p = p->next) {
|
||||
if (p->area > areanum) {
|
||||
while ((q = p->next)->area > areanum)
|
||||
p->next = q->next;
|
||||
areanxt = p;
|
||||
}
|
||||
}
|
||||
#ifdef SHRINKBY
|
||||
if (areatop >= q + SHRINKBY && q->area > areanum) {
|
||||
brk((char *)(q+1));
|
||||
q->next = areabot;
|
||||
q->area = BUSY;
|
||||
areatop = q;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
|
@ -1,801 +0,0 @@
|
|||
#define Extern extern
|
||||
#include <sys/types.h>
|
||||
#include <signal.h>
|
||||
#define _NSIG NSIG
|
||||
#include <errno.h>
|
||||
#include <setjmp.h>
|
||||
#include "sh.h"
|
||||
|
||||
/* -------- csyn.c -------- */
|
||||
/*
|
||||
* shell: syntax (C version)
|
||||
*/
|
||||
|
||||
typedef union {
|
||||
char *cp;
|
||||
char **wp;
|
||||
int i;
|
||||
struct op *o;
|
||||
} YYSTYPE;
|
||||
#define WORD 256
|
||||
#define LOGAND 257
|
||||
#define LOGOR 258
|
||||
#define BREAK 259
|
||||
#define IF 260
|
||||
#define THEN 261
|
||||
#define ELSE 262
|
||||
#define ELIF 263
|
||||
#define FI 264
|
||||
#define CASE 265
|
||||
#define ESAC 266
|
||||
#define FOR 267
|
||||
#define WHILE 268
|
||||
#define UNTIL 269
|
||||
#define DO 270
|
||||
#define DONE 271
|
||||
#define IN 272
|
||||
#define YYERRCODE 300
|
||||
|
||||
/* flags to yylex */
|
||||
#define CONTIN 01 /* skip new lines to complete command */
|
||||
|
||||
/* #include "sh.h" */
|
||||
#define SYNTAXERR zzerr()
|
||||
static int startl;
|
||||
static int peeksym;
|
||||
static int nlseen;
|
||||
static int iounit = IODEFAULT;
|
||||
|
||||
static YYSTYPE yylval;
|
||||
|
||||
_PROTOTYPE(static struct op *pipeline, (int cf ));
|
||||
_PROTOTYPE(static struct op *andor, (void));
|
||||
_PROTOTYPE(static struct op *c_list, (void));
|
||||
_PROTOTYPE(static int synio, (int cf ));
|
||||
_PROTOTYPE(static void musthave, (int c, int cf ));
|
||||
_PROTOTYPE(static struct op *simple, (void));
|
||||
_PROTOTYPE(static struct op *nested, (int type, int mark ));
|
||||
_PROTOTYPE(static struct op *command, (int cf ));
|
||||
_PROTOTYPE(static struct op *dogroup, (int onlydone ));
|
||||
_PROTOTYPE(static struct op *thenpart, (void));
|
||||
_PROTOTYPE(static struct op *elsepart, (void));
|
||||
_PROTOTYPE(static struct op *caselist, (void));
|
||||
_PROTOTYPE(static struct op *casepart, (void));
|
||||
_PROTOTYPE(static char **pattern, (void));
|
||||
_PROTOTYPE(static char **wordlist, (void));
|
||||
_PROTOTYPE(static struct op *list, (struct op *t1, struct op *t2 ));
|
||||
_PROTOTYPE(static struct op *block, (int type, struct op *t1, struct op *t2, char **wp ));
|
||||
_PROTOTYPE(static struct op *newtp, (void));
|
||||
_PROTOTYPE(static struct op *namelist, (struct op *t ));
|
||||
_PROTOTYPE(static char **copyw, (void));
|
||||
_PROTOTYPE(static void word, (char *cp ));
|
||||
_PROTOTYPE(static struct ioword **copyio, (void));
|
||||
_PROTOTYPE(static struct ioword *io, (int u, int f, char *cp ));
|
||||
_PROTOTYPE(static void zzerr, (void));
|
||||
_PROTOTYPE(void yyerror, (char *s ));
|
||||
_PROTOTYPE(static int yylex, (int cf ));
|
||||
_PROTOTYPE(int collect, (int c, int c1 ));
|
||||
_PROTOTYPE(int dual, (int c ));
|
||||
_PROTOTYPE(static void diag, (int ec ));
|
||||
_PROTOTYPE(static char *tree, (unsigned size ));
|
||||
_PROTOTYPE(void printf, (char *s ));
|
||||
|
||||
int
|
||||
yyparse()
|
||||
{
|
||||
startl = 1;
|
||||
peeksym = 0;
|
||||
yynerrs = 0;
|
||||
outtree = c_list();
|
||||
musthave('\n', 0);
|
||||
return(yynerrs!=0);
|
||||
}
|
||||
|
||||
static struct op *
|
||||
pipeline(cf)
|
||||
int cf;
|
||||
{
|
||||
register struct op *t, *p;
|
||||
register int c;
|
||||
|
||||
t = command(cf);
|
||||
if (t != NULL) {
|
||||
while ((c = yylex(0)) == '|') {
|
||||
if ((p = command(CONTIN)) == NULL)
|
||||
SYNTAXERR;
|
||||
if (t->type != TPAREN && t->type != TCOM) {
|
||||
/* shell statement */
|
||||
t = block(TPAREN, t, NOBLOCK, NOWORDS);
|
||||
}
|
||||
t = block(TPIPE, t, p, NOWORDS);
|
||||
}
|
||||
peeksym = c;
|
||||
}
|
||||
return(t);
|
||||
}
|
||||
|
||||
static struct op *
|
||||
andor()
|
||||
{
|
||||
register struct op *t, *p;
|
||||
register int c;
|
||||
|
||||
t = pipeline(0);
|
||||
if (t != NULL) {
|
||||
while ((c = yylex(0)) == LOGAND || c == LOGOR) {
|
||||
if ((p = pipeline(CONTIN)) == NULL)
|
||||
SYNTAXERR;
|
||||
t = block(c == LOGAND? TAND: TOR, t, p, NOWORDS);
|
||||
}
|
||||
peeksym = c;
|
||||
}
|
||||
return(t);
|
||||
}
|
||||
|
||||
static struct op *
|
||||
c_list()
|
||||
{
|
||||
register struct op *t, *p;
|
||||
register int c;
|
||||
|
||||
t = andor();
|
||||
if (t != NULL) {
|
||||
if((peeksym = yylex(0)) == '&')
|
||||
t = block(TASYNC, t, NOBLOCK, NOWORDS);
|
||||
while ((c = yylex(0)) == ';' || c == '&' || (multiline && c == '\n')) {
|
||||
if ((p = andor()) == NULL)
|
||||
return(t);
|
||||
if((peeksym = yylex(0)) == '&')
|
||||
p = block(TASYNC, p, NOBLOCK, NOWORDS);
|
||||
t = list(t, p);
|
||||
}
|
||||
peeksym = c;
|
||||
}
|
||||
return(t);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
synio(cf)
|
||||
int cf;
|
||||
{
|
||||
register struct ioword *iop;
|
||||
register int i;
|
||||
register int c;
|
||||
|
||||
if ((c = yylex(cf)) != '<' && c != '>') {
|
||||
peeksym = c;
|
||||
return(0);
|
||||
}
|
||||
i = yylval.i;
|
||||
musthave(WORD, 0);
|
||||
iop = io(iounit, i, yylval.cp);
|
||||
iounit = IODEFAULT;
|
||||
if (i & IOHERE)
|
||||
markhere(yylval.cp, iop);
|
||||
return(1);
|
||||
}
|
||||
|
||||
static void
|
||||
musthave(c, cf)
|
||||
int c, cf;
|
||||
{
|
||||
if ((peeksym = yylex(cf)) != c)
|
||||
SYNTAXERR;
|
||||
peeksym = 0;
|
||||
}
|
||||
|
||||
static struct op *
|
||||
simple()
|
||||
{
|
||||
register struct op *t;
|
||||
|
||||
t = NULL;
|
||||
for (;;) {
|
||||
switch (peeksym = yylex(0)) {
|
||||
case '<':
|
||||
case '>':
|
||||
(void) synio(0);
|
||||
break;
|
||||
|
||||
case WORD:
|
||||
if (t == NULL) {
|
||||
t = newtp();
|
||||
t->type = TCOM;
|
||||
}
|
||||
peeksym = 0;
|
||||
word(yylval.cp);
|
||||
break;
|
||||
|
||||
default:
|
||||
return(t);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static struct op *
|
||||
nested(type, mark)
|
||||
int type, mark;
|
||||
{
|
||||
register struct op *t;
|
||||
|
||||
multiline++;
|
||||
t = c_list();
|
||||
musthave(mark, 0);
|
||||
multiline--;
|
||||
return(block(type, t, NOBLOCK, NOWORDS));
|
||||
}
|
||||
|
||||
static struct op *
|
||||
command(cf)
|
||||
int cf;
|
||||
{
|
||||
register struct op *t;
|
||||
struct wdblock *iosave;
|
||||
register int c;
|
||||
|
||||
iosave = iolist;
|
||||
iolist = NULL;
|
||||
if (multiline)
|
||||
cf |= CONTIN;
|
||||
while (synio(cf))
|
||||
cf = 0;
|
||||
switch (c = yylex(cf)) {
|
||||
default:
|
||||
peeksym = c;
|
||||
if ((t = simple()) == NULL) {
|
||||
if (iolist == NULL)
|
||||
return((struct op *)NULL);
|
||||
t = newtp();
|
||||
t->type = TCOM;
|
||||
}
|
||||
break;
|
||||
|
||||
case '(':
|
||||
t = nested(TPAREN, ')');
|
||||
break;
|
||||
|
||||
case '{':
|
||||
t = nested(TBRACE, '}');
|
||||
break;
|
||||
|
||||
case FOR:
|
||||
t = newtp();
|
||||
t->type = TFOR;
|
||||
musthave(WORD, 0);
|
||||
startl = 1;
|
||||
t->str = yylval.cp;
|
||||
multiline++;
|
||||
t->words = wordlist();
|
||||
if ((c = yylex(0)) != '\n' && c != ';')
|
||||
peeksym = c;
|
||||
t->left = dogroup(0);
|
||||
multiline--;
|
||||
break;
|
||||
|
||||
case WHILE:
|
||||
case UNTIL:
|
||||
multiline++;
|
||||
t = newtp();
|
||||
t->type = c == WHILE? TWHILE: TUNTIL;
|
||||
t->left = c_list();
|
||||
t->right = dogroup(1);
|
||||
t->words = NULL;
|
||||
multiline--;
|
||||
break;
|
||||
|
||||
case CASE:
|
||||
t = newtp();
|
||||
t->type = TCASE;
|
||||
musthave(WORD, 0);
|
||||
t->str = yylval.cp;
|
||||
startl++;
|
||||
multiline++;
|
||||
musthave(IN, CONTIN);
|
||||
startl++;
|
||||
t->left = caselist();
|
||||
musthave(ESAC, 0);
|
||||
multiline--;
|
||||
break;
|
||||
|
||||
case IF:
|
||||
multiline++;
|
||||
t = newtp();
|
||||
t->type = TIF;
|
||||
t->left = c_list();
|
||||
t->right = thenpart();
|
||||
musthave(FI, 0);
|
||||
multiline--;
|
||||
break;
|
||||
}
|
||||
while (synio(0))
|
||||
;
|
||||
t = namelist(t);
|
||||
iolist = iosave;
|
||||
return(t);
|
||||
}
|
||||
|
||||
static struct op *
|
||||
dogroup(onlydone)
|
||||
int onlydone;
|
||||
{
|
||||
register int c;
|
||||
register struct op *list;
|
||||
|
||||
c = yylex(CONTIN);
|
||||
if (c == DONE && onlydone)
|
||||
return((struct op *)NULL);
|
||||
if (c != DO)
|
||||
SYNTAXERR;
|
||||
list = c_list();
|
||||
musthave(DONE, 0);
|
||||
return(list);
|
||||
}
|
||||
|
||||
static struct op *
|
||||
thenpart()
|
||||
{
|
||||
register int c;
|
||||
register struct op *t;
|
||||
|
||||
if ((c = yylex(0)) != THEN) {
|
||||
peeksym = c;
|
||||
return((struct op *)NULL);
|
||||
}
|
||||
t = newtp();
|
||||
t->type = 0;
|
||||
t->left = c_list();
|
||||
if (t->left == NULL)
|
||||
SYNTAXERR;
|
||||
t->right = elsepart();
|
||||
return(t);
|
||||
}
|
||||
|
||||
static struct op *
|
||||
elsepart()
|
||||
{
|
||||
register int c;
|
||||
register struct op *t;
|
||||
|
||||
switch (c = yylex(0)) {
|
||||
case ELSE:
|
||||
if ((t = c_list()) == NULL)
|
||||
SYNTAXERR;
|
||||
return(t);
|
||||
|
||||
case ELIF:
|
||||
t = newtp();
|
||||
t->type = TELIF;
|
||||
t->left = c_list();
|
||||
t->right = thenpart();
|
||||
return(t);
|
||||
|
||||
default:
|
||||
peeksym = c;
|
||||
return((struct op *)NULL);
|
||||
}
|
||||
}
|
||||
|
||||
static struct op *
|
||||
caselist()
|
||||
{
|
||||
register struct op *t;
|
||||
|
||||
t = NULL;
|
||||
while ((peeksym = yylex(CONTIN)) != ESAC)
|
||||
t = list(t, casepart());
|
||||
return(t);
|
||||
}
|
||||
|
||||
static struct op *
|
||||
casepart()
|
||||
{
|
||||
register struct op *t;
|
||||
|
||||
t = newtp();
|
||||
t->type = TPAT;
|
||||
t->words = pattern();
|
||||
musthave(')', 0);
|
||||
t->left = c_list();
|
||||
if ((peeksym = yylex(CONTIN)) != ESAC)
|
||||
musthave(BREAK, CONTIN);
|
||||
return(t);
|
||||
}
|
||||
|
||||
static char **
|
||||
pattern()
|
||||
{
|
||||
register int c, cf;
|
||||
|
||||
cf = CONTIN;
|
||||
do {
|
||||
musthave(WORD, cf);
|
||||
word(yylval.cp);
|
||||
cf = 0;
|
||||
} while ((c = yylex(0)) == '|');
|
||||
peeksym = c;
|
||||
word(NOWORD);
|
||||
return(copyw());
|
||||
}
|
||||
|
||||
static char **
|
||||
wordlist()
|
||||
{
|
||||
register int c;
|
||||
|
||||
if ((c = yylex(0)) != IN) {
|
||||
peeksym = c;
|
||||
return((char **)NULL);
|
||||
}
|
||||
startl = 0;
|
||||
while ((c = yylex(0)) == WORD)
|
||||
word(yylval.cp);
|
||||
word(NOWORD);
|
||||
peeksym = c;
|
||||
return(copyw());
|
||||
}
|
||||
|
||||
/*
|
||||
* supporting functions
|
||||
*/
|
||||
static struct op *
|
||||
list(t1, t2)
|
||||
register struct op *t1, *t2;
|
||||
{
|
||||
if (t1 == NULL)
|
||||
return(t2);
|
||||
if (t2 == NULL)
|
||||
return(t1);
|
||||
return(block(TLIST, t1, t2, NOWORDS));
|
||||
}
|
||||
|
||||
static struct op *
|
||||
block(type, t1, t2, wp)
|
||||
int type;
|
||||
struct op *t1, *t2;
|
||||
char **wp;
|
||||
{
|
||||
register struct op *t;
|
||||
|
||||
t = newtp();
|
||||
t->type = type;
|
||||
t->left = t1;
|
||||
t->right = t2;
|
||||
t->words = wp;
|
||||
return(t);
|
||||
}
|
||||
|
||||
struct res {
|
||||
char *r_name;
|
||||
int r_val;
|
||||
} restab[] = {
|
||||
"for", FOR,
|
||||
"case", CASE,
|
||||
"esac", ESAC,
|
||||
"while", WHILE,
|
||||
"do", DO,
|
||||
"done", DONE,
|
||||
"if", IF,
|
||||
"in", IN,
|
||||
"then", THEN,
|
||||
"else", ELSE,
|
||||
"elif", ELIF,
|
||||
"until", UNTIL,
|
||||
"fi", FI,
|
||||
|
||||
";;", BREAK,
|
||||
"||", LOGOR,
|
||||
"&&", LOGAND,
|
||||
"{", '{',
|
||||
"}", '}',
|
||||
|
||||
0,
|
||||
};
|
||||
|
||||
int
|
||||
rlookup(n)
|
||||
register char *n;
|
||||
{
|
||||
register struct res *rp;
|
||||
|
||||
for (rp = restab; rp->r_name; rp++)
|
||||
if (strcmp(rp->r_name, n) == 0)
|
||||
return(rp->r_val);
|
||||
return(0);
|
||||
}
|
||||
|
||||
static struct op *
|
||||
newtp()
|
||||
{
|
||||
register struct op *t;
|
||||
|
||||
t = (struct op *)tree(sizeof(*t));
|
||||
t->type = 0;
|
||||
t->words = NULL;
|
||||
t->ioact = NULL;
|
||||
t->left = NULL;
|
||||
t->right = NULL;
|
||||
t->str = NULL;
|
||||
return(t);
|
||||
}
|
||||
|
||||
static struct op *
|
||||
namelist(t)
|
||||
register struct op *t;
|
||||
{
|
||||
if (iolist) {
|
||||
iolist = addword((char *)NULL, iolist);
|
||||
t->ioact = copyio();
|
||||
} else
|
||||
t->ioact = NULL;
|
||||
if (t->type != TCOM) {
|
||||
if (t->type != TPAREN && t->ioact != NULL) {
|
||||
t = block(TPAREN, t, NOBLOCK, NOWORDS);
|
||||
t->ioact = t->left->ioact;
|
||||
t->left->ioact = NULL;
|
||||
}
|
||||
return(t);
|
||||
}
|
||||
word(NOWORD);
|
||||
t->words = copyw();
|
||||
return(t);
|
||||
}
|
||||
|
||||
static char **
|
||||
copyw()
|
||||
{
|
||||
register char **wd;
|
||||
|
||||
wd = getwords(wdlist);
|
||||
wdlist = 0;
|
||||
return(wd);
|
||||
}
|
||||
|
||||
static void
|
||||
word(cp)
|
||||
char *cp;
|
||||
{
|
||||
wdlist = addword(cp, wdlist);
|
||||
}
|
||||
|
||||
static struct ioword **
|
||||
copyio()
|
||||
{
|
||||
register struct ioword **iop;
|
||||
|
||||
iop = (struct ioword **) getwords(iolist);
|
||||
iolist = 0;
|
||||
return(iop);
|
||||
}
|
||||
|
||||
static struct ioword *
|
||||
io(u, f, cp)
|
||||
int u;
|
||||
int f;
|
||||
char *cp;
|
||||
{
|
||||
register struct ioword *iop;
|
||||
|
||||
iop = (struct ioword *) tree(sizeof(*iop));
|
||||
iop->io_unit = u;
|
||||
iop->io_flag = f;
|
||||
iop->io_name = cp;
|
||||
iolist = addword((char *)iop, iolist);
|
||||
return(iop);
|
||||
}
|
||||
|
||||
static void
|
||||
zzerr()
|
||||
{
|
||||
yyerror("syntax error");
|
||||
}
|
||||
|
||||
void
|
||||
yyerror(s)
|
||||
char *s;
|
||||
{
|
||||
yynerrs++;
|
||||
if (talking && e.iop <= iostack) {
|
||||
multiline = 0;
|
||||
while (eofc() == 0 && yylex(0) != '\n')
|
||||
;
|
||||
}
|
||||
err(s);
|
||||
fail();
|
||||
}
|
||||
|
||||
static int
|
||||
yylex(cf)
|
||||
int cf;
|
||||
{
|
||||
register int c, c1;
|
||||
int atstart;
|
||||
|
||||
if ((c = peeksym) > 0) {
|
||||
peeksym = 0;
|
||||
if (c == '\n')
|
||||
startl = 1;
|
||||
return(c);
|
||||
}
|
||||
nlseen = 0;
|
||||
e.linep = line;
|
||||
atstart = startl;
|
||||
startl = 0;
|
||||
yylval.i = 0;
|
||||
|
||||
loop:
|
||||
while ((c = getc(0)) == ' ' || c == '\t')
|
||||
;
|
||||
switch (c) {
|
||||
default:
|
||||
if (any(c, "0123456789")) {
|
||||
unget(c1 = getc(0));
|
||||
if (c1 == '<' || c1 == '>') {
|
||||
iounit = c - '0';
|
||||
goto loop;
|
||||
}
|
||||
*e.linep++ = c;
|
||||
c = c1;
|
||||
}
|
||||
break;
|
||||
|
||||
case '#':
|
||||
while ((c = getc(0)) != 0 && c != '\n')
|
||||
;
|
||||
unget(c);
|
||||
goto loop;
|
||||
|
||||
case 0:
|
||||
return(c);
|
||||
|
||||
case '$':
|
||||
*e.linep++ = c;
|
||||
if ((c = getc(0)) == '{') {
|
||||
if ((c = collect(c, '}')) != '\0')
|
||||
return(c);
|
||||
goto pack;
|
||||
}
|
||||
break;
|
||||
|
||||
case '`':
|
||||
case '\'':
|
||||
case '"':
|
||||
if ((c = collect(c, c)) != '\0')
|
||||
return(c);
|
||||
goto pack;
|
||||
|
||||
case '|':
|
||||
case '&':
|
||||
case ';':
|
||||
if ((c1 = dual(c)) != '\0') {
|
||||
startl = 1;
|
||||
return(c1);
|
||||
}
|
||||
startl = 1;
|
||||
return(c);
|
||||
case '^':
|
||||
startl = 1;
|
||||
return('|');
|
||||
case '>':
|
||||
case '<':
|
||||
diag(c);
|
||||
return(c);
|
||||
|
||||
case '\n':
|
||||
nlseen++;
|
||||
gethere();
|
||||
startl = 1;
|
||||
if (multiline || cf & CONTIN) {
|
||||
if (talking && e.iop <= iostack)
|
||||
prs(cprompt->value);
|
||||
if (cf & CONTIN)
|
||||
goto loop;
|
||||
}
|
||||
return(c);
|
||||
|
||||
case '(':
|
||||
case ')':
|
||||
startl = 1;
|
||||
return(c);
|
||||
}
|
||||
|
||||
unget(c);
|
||||
|
||||
pack:
|
||||
while ((c = getc(0)) != 0 && !any(c, "`$ '\"\t;&<>()|^\n"))
|
||||
if (e.linep >= elinep)
|
||||
err("word too long");
|
||||
else
|
||||
*e.linep++ = c;
|
||||
unget(c);
|
||||
if(any(c, "\"'`$"))
|
||||
goto loop;
|
||||
*e.linep++ = '\0';
|
||||
if (atstart && (c = rlookup(line))!=0) {
|
||||
startl = 1;
|
||||
return(c);
|
||||
}
|
||||
yylval.cp = strsave(line, areanum);
|
||||
return(WORD);
|
||||
}
|
||||
|
||||
int
|
||||
collect(c, c1)
|
||||
register c, c1;
|
||||
{
|
||||
char s[2];
|
||||
|
||||
*e.linep++ = c;
|
||||
while ((c = getc(c1)) != c1) {
|
||||
if (c == 0) {
|
||||
unget(c);
|
||||
s[0] = c1;
|
||||
s[1] = 0;
|
||||
prs("no closing "); yyerror(s);
|
||||
return(YYERRCODE);
|
||||
}
|
||||
if (talking && c == '\n' && e.iop <= iostack)
|
||||
prs(cprompt->value);
|
||||
*e.linep++ = c;
|
||||
}
|
||||
*e.linep++ = c;
|
||||
return(0);
|
||||
}
|
||||
|
||||
int
|
||||
dual(c)
|
||||
register c;
|
||||
{
|
||||
char s[3];
|
||||
register char *cp = s;
|
||||
|
||||
*cp++ = c;
|
||||
*cp++ = getc(0);
|
||||
*cp = 0;
|
||||
if ((c = rlookup(s)) == 0)
|
||||
unget(*--cp);
|
||||
return(c);
|
||||
}
|
||||
|
||||
static void
|
||||
diag(ec)
|
||||
register int ec;
|
||||
{
|
||||
register int c;
|
||||
|
||||
c = getc(0);
|
||||
if (c == '>' || c == '<') {
|
||||
if (c != ec)
|
||||
zzerr();
|
||||
yylval.i = ec == '>'? IOWRITE|IOCAT: IOHERE;
|
||||
c = getc(0);
|
||||
} else
|
||||
yylval.i = ec == '>'? IOWRITE: IOREAD;
|
||||
if (c != '&' || yylval.i == IOHERE)
|
||||
unget(c);
|
||||
else
|
||||
yylval.i |= IODUP;
|
||||
}
|
||||
|
||||
static char *
|
||||
tree(size)
|
||||
unsigned size;
|
||||
{
|
||||
register char *t;
|
||||
|
||||
if ((t = getcell(size)) == NULL) {
|
||||
prs("command line too complicated\n");
|
||||
fail();
|
||||
/* NOTREACHED */
|
||||
}
|
||||
return(t);
|
||||
}
|
||||
|
||||
/* VARARGS1 */
|
||||
/* ARGSUSED */
|
||||
void
|
||||
printf(s) /* yyparse calls it */
|
||||
char *s;
|
||||
{
|
||||
}
|
||||
|
||||
File diff suppressed because it is too large
Load diff
|
|
@ -1,767 +0,0 @@
|
|||
#define Extern extern
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <dirent.h>
|
||||
#include <limits.h>
|
||||
#include <signal.h>
|
||||
#define _NSIG NSIG
|
||||
#include <errno.h>
|
||||
#include <setjmp.h>
|
||||
#include "sh.h"
|
||||
|
||||
/* -------- eval.c -------- */
|
||||
/* #include "sh.h" */
|
||||
/* #include "word.h" */
|
||||
|
||||
/*
|
||||
* ${}
|
||||
* `command`
|
||||
* blank interpretation
|
||||
* quoting
|
||||
* glob
|
||||
*/
|
||||
|
||||
_PROTOTYPE(static int expand, (char *cp, struct wdblock **wbp, int f ));
|
||||
_PROTOTYPE(static char *blank, (int f ));
|
||||
_PROTOTYPE(static int dollar, (int quoted ));
|
||||
_PROTOTYPE(static int grave, (int quoted ));
|
||||
_PROTOTYPE(void globname, (char *we, char *pp ));
|
||||
_PROTOTYPE(static char *generate, (char *start1, char *end1, char *middle, char *end ));
|
||||
_PROTOTYPE(static int anyspcl, (struct wdblock *wb ));
|
||||
_PROTOTYPE(static int xstrcmp, (char *p1, char *p2 ));
|
||||
_PROTOTYPE(void glob0, (char *a0, unsigned int a1, int a2, int (*a3)(char *, char *)));
|
||||
_PROTOTYPE(void glob1, (char *base, char *lim ));
|
||||
_PROTOTYPE(void glob2, (char *i, char *j ));
|
||||
_PROTOTYPE(void glob3, (char *i, char *j, char *k ));
|
||||
_PROTOTYPE(char *memcopy, (char *ato, char *from, int nb ));
|
||||
|
||||
char **
|
||||
eval(ap, f)
|
||||
register char **ap;
|
||||
int f;
|
||||
{
|
||||
struct wdblock *wb;
|
||||
char **wp;
|
||||
char **wf;
|
||||
jmp_buf ev;
|
||||
|
||||
wp = NULL;
|
||||
wb = NULL;
|
||||
wf = NULL;
|
||||
if (newenv(setjmp(errpt = ev)) == 0) {
|
||||
while (*ap && isassign(*ap))
|
||||
expand(*ap++, &wb, f & ~DOGLOB);
|
||||
if (flag['k']) {
|
||||
for (wf = ap; *wf; wf++) {
|
||||
if (isassign(*wf))
|
||||
expand(*wf, &wb, f & ~DOGLOB);
|
||||
}
|
||||
}
|
||||
for (wb = addword((char *)0, wb); *ap; ap++) {
|
||||
if (!flag['k'] || !isassign(*ap))
|
||||
expand(*ap, &wb, f & ~DOKEY);
|
||||
}
|
||||
wb = addword((char *)0, wb);
|
||||
wp = getwords(wb);
|
||||
quitenv();
|
||||
} else
|
||||
gflg = 1;
|
||||
return(gflg? (char **)NULL: wp);
|
||||
}
|
||||
|
||||
/*
|
||||
* Make the exported environment from the exported
|
||||
* names in the dictionary. Keyword assignments
|
||||
* will already have been done.
|
||||
*/
|
||||
char **
|
||||
makenv()
|
||||
|
||||
{
|
||||
register struct wdblock *wb;
|
||||
register struct var *vp;
|
||||
|
||||
wb = NULL;
|
||||
for (vp = vlist; vp; vp = vp->next)
|
||||
if (vp->status & EXPORT)
|
||||
wb = addword(vp->name, wb);
|
||||
wb = addword((char *)0, wb);
|
||||
return(getwords(wb));
|
||||
}
|
||||
|
||||
char *
|
||||
evalstr(cp, f)
|
||||
register char *cp;
|
||||
int f;
|
||||
{
|
||||
struct wdblock *wb;
|
||||
|
||||
wb = NULL;
|
||||
if (expand(cp, &wb, f)) {
|
||||
if (wb == NULL || wb->w_nword == 0 || (cp = wb->w_words[0]) == NULL)
|
||||
cp = "";
|
||||
DELETE(wb);
|
||||
} else
|
||||
cp = NULL;
|
||||
return(cp);
|
||||
}
|
||||
|
||||
static int
|
||||
expand(cp, wbp, f)
|
||||
register char *cp;
|
||||
register struct wdblock **wbp;
|
||||
int f;
|
||||
{
|
||||
jmp_buf ev;
|
||||
|
||||
gflg = 0;
|
||||
if (cp == NULL)
|
||||
return(0);
|
||||
if (!anys("$`'\"", cp) &&
|
||||
!anys(ifs->value, cp) &&
|
||||
((f&DOGLOB)==0 || !anys("[*?", cp))) {
|
||||
cp = strsave(cp, areanum);
|
||||
if (f & DOTRIM)
|
||||
unquote(cp);
|
||||
*wbp = addword(cp, *wbp);
|
||||
return(1);
|
||||
}
|
||||
if (newenv(setjmp(errpt = ev)) == 0) {
|
||||
PUSHIO(aword, cp, strchar);
|
||||
e.iobase = e.iop;
|
||||
while ((cp = blank(f)) && gflg == 0) {
|
||||
e.linep = cp;
|
||||
cp = strsave(cp, areanum);
|
||||
if ((f&DOGLOB) == 0) {
|
||||
if (f & DOTRIM)
|
||||
unquote(cp);
|
||||
*wbp = addword(cp, *wbp);
|
||||
} else
|
||||
*wbp = glob(cp, *wbp);
|
||||
}
|
||||
quitenv();
|
||||
} else
|
||||
gflg = 1;
|
||||
return(gflg == 0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Blank interpretation and quoting
|
||||
*/
|
||||
static char *
|
||||
blank(f)
|
||||
int f;
|
||||
{
|
||||
register c, c1;
|
||||
register char *sp;
|
||||
int scanequals, foundequals;
|
||||
|
||||
sp = e.linep;
|
||||
scanequals = f & DOKEY;
|
||||
foundequals = 0;
|
||||
|
||||
loop:
|
||||
switch (c = subgetc('"', foundequals)) {
|
||||
case 0:
|
||||
if (sp == e.linep)
|
||||
return(0);
|
||||
*e.linep++ = 0;
|
||||
return(sp);
|
||||
|
||||
default:
|
||||
if (f & DOBLANK && any(c, ifs->value))
|
||||
goto loop;
|
||||
break;
|
||||
|
||||
case '"':
|
||||
case '\'':
|
||||
scanequals = 0;
|
||||
if (INSUB())
|
||||
break;
|
||||
for (c1 = c; (c = subgetc(c1, 1)) != c1;) {
|
||||
if (c == 0)
|
||||
break;
|
||||
if (c == '\'' || !any(c, "$`\""))
|
||||
c |= QUOTE;
|
||||
*e.linep++ = c;
|
||||
}
|
||||
c = 0;
|
||||
}
|
||||
unget(c);
|
||||
if (!letter(c))
|
||||
scanequals = 0;
|
||||
for (;;) {
|
||||
c = subgetc('"', foundequals);
|
||||
if (c == 0 ||
|
||||
f & (DOBLANK && any(c, ifs->value)) ||
|
||||
(!INSUB() && any(c, "\"'"))) {
|
||||
scanequals = 0;
|
||||
unget(c);
|
||||
if (any(c, "\"'"))
|
||||
goto loop;
|
||||
break;
|
||||
}
|
||||
if (scanequals)
|
||||
if (c == '=') {
|
||||
foundequals = 1;
|
||||
scanequals = 0;
|
||||
}
|
||||
else if (!letnum(c))
|
||||
scanequals = 0;
|
||||
*e.linep++ = c;
|
||||
}
|
||||
*e.linep++ = 0;
|
||||
return(sp);
|
||||
}
|
||||
|
||||
/*
|
||||
* Get characters, substituting for ` and $
|
||||
*/
|
||||
int
|
||||
subgetc(ec, quoted)
|
||||
register char ec;
|
||||
int quoted;
|
||||
{
|
||||
register char c;
|
||||
|
||||
again:
|
||||
c = getc(ec);
|
||||
if (!INSUB() && ec != '\'') {
|
||||
if (c == '`') {
|
||||
if (grave(quoted) == 0)
|
||||
return(0);
|
||||
e.iop->task = XGRAVE;
|
||||
goto again;
|
||||
}
|
||||
if (c == '$' && (c = dollar(quoted)) == 0) {
|
||||
e.iop->task = XDOLL;
|
||||
goto again;
|
||||
}
|
||||
}
|
||||
return(c);
|
||||
}
|
||||
|
||||
/*
|
||||
* Prepare to generate the string returned by ${} substitution.
|
||||
*/
|
||||
static int
|
||||
dollar(quoted)
|
||||
int quoted;
|
||||
{
|
||||
int otask;
|
||||
struct io *oiop;
|
||||
char *dolp;
|
||||
register char *s, c, *cp;
|
||||
struct var *vp;
|
||||
|
||||
c = readc();
|
||||
s = e.linep;
|
||||
if (c != '{') {
|
||||
*e.linep++ = c;
|
||||
if (letter(c)) {
|
||||
while ((c = readc())!=0 && letnum(c))
|
||||
if (e.linep < elinep)
|
||||
*e.linep++ = c;
|
||||
unget(c);
|
||||
}
|
||||
c = 0;
|
||||
} else {
|
||||
oiop = e.iop;
|
||||
otask = e.iop->task;
|
||||
e.iop->task = XOTHER;
|
||||
while ((c = subgetc('"', 0))!=0 && c!='}' && c!='\n')
|
||||
if (e.linep < elinep)
|
||||
*e.linep++ = c;
|
||||
if (oiop == e.iop)
|
||||
e.iop->task = otask;
|
||||
if (c != '}') {
|
||||
err("unclosed ${");
|
||||
gflg++;
|
||||
return(c);
|
||||
}
|
||||
}
|
||||
if (e.linep >= elinep) {
|
||||
err("string in ${} too long");
|
||||
gflg++;
|
||||
e.linep -= 10;
|
||||
}
|
||||
*e.linep = 0;
|
||||
if (*s)
|
||||
for (cp = s+1; *cp; cp++)
|
||||
if (any(*cp, "=-+?")) {
|
||||
c = *cp;
|
||||
*cp++ = 0;
|
||||
break;
|
||||
}
|
||||
if (s[1] == 0 && (*s == '*' || *s == '@')) {
|
||||
if (dolc > 1) {
|
||||
/* currently this does not distinguish $* and $@ */
|
||||
/* should check dollar */
|
||||
e.linep = s;
|
||||
PUSHIO(awordlist, dolv+1, dolchar);
|
||||
return(0);
|
||||
} else { /* trap the nasty ${=} */
|
||||
s[0] = '1';
|
||||
s[1] = 0;
|
||||
}
|
||||
}
|
||||
vp = lookup(s);
|
||||
if ((dolp = vp->value) == null) {
|
||||
switch (c) {
|
||||
case '=':
|
||||
if (digit(*s)) {
|
||||
err("cannot use ${...=...} with $n");
|
||||
gflg++;
|
||||
break;
|
||||
}
|
||||
setval(vp, cp);
|
||||
dolp = vp->value;
|
||||
break;
|
||||
|
||||
case '-':
|
||||
dolp = strsave(cp, areanum);
|
||||
break;
|
||||
|
||||
case '?':
|
||||
if (*cp == 0) {
|
||||
prs("missing value for ");
|
||||
err(s);
|
||||
} else
|
||||
err(cp);
|
||||
gflg++;
|
||||
break;
|
||||
}
|
||||
} else if (c == '+')
|
||||
dolp = strsave(cp, areanum);
|
||||
if (flag['u'] && dolp == null) {
|
||||
prs("unset variable: ");
|
||||
err(s);
|
||||
gflg++;
|
||||
}
|
||||
e.linep = s;
|
||||
PUSHIO(aword, dolp, quoted ? qstrchar : strchar);
|
||||
return(0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Run the command in `...` and read its output.
|
||||
*/
|
||||
static int
|
||||
grave(quoted)
|
||||
int quoted;
|
||||
{
|
||||
register char *cp;
|
||||
register int i;
|
||||
int pf[2];
|
||||
|
||||
for (cp = e.iop->argp->aword; *cp != '`'; cp++)
|
||||
if (*cp == 0) {
|
||||
err("no closing `");
|
||||
return(0);
|
||||
}
|
||||
if (openpipe(pf) < 0)
|
||||
return(0);
|
||||
if ((i = fork()) == -1) {
|
||||
closepipe(pf);
|
||||
err("try again");
|
||||
return(0);
|
||||
}
|
||||
if (i != 0) {
|
||||
e.iop->argp->aword = ++cp;
|
||||
close(pf[1]);
|
||||
PUSHIO(afile, remap(pf[0]), quoted? qgravechar: gravechar);
|
||||
return(1);
|
||||
}
|
||||
*cp = 0;
|
||||
/* allow trapped signals */
|
||||
for (i=0; i<=_NSIG; i++)
|
||||
if (ourtrap[i] && signal(i, SIG_IGN) != SIG_IGN)
|
||||
signal(i, SIG_DFL);
|
||||
dup2(pf[1], 1);
|
||||
closepipe(pf);
|
||||
flag['e'] = 0;
|
||||
flag['v'] = 0;
|
||||
flag['n'] = 0;
|
||||
cp = strsave(e.iop->argp->aword, 0);
|
||||
areanum = 1;
|
||||
freehere(areanum);
|
||||
freearea(areanum); /* free old space */
|
||||
e.oenv = NULL;
|
||||
e.iop = (e.iobase = iostack) - 1;
|
||||
unquote(cp);
|
||||
talking = 0;
|
||||
PUSHIO(aword, cp, nlchar);
|
||||
onecommand();
|
||||
exit(1);
|
||||
}
|
||||
|
||||
char *
|
||||
unquote(as)
|
||||
register char *as;
|
||||
{
|
||||
register char *s;
|
||||
|
||||
if ((s = as) != NULL)
|
||||
while (*s)
|
||||
*s++ &= ~QUOTE;
|
||||
return(as);
|
||||
}
|
||||
|
||||
/* -------- glob.c -------- */
|
||||
/* #include "sh.h" */
|
||||
|
||||
/*
|
||||
* glob
|
||||
*/
|
||||
|
||||
#define scopy(x) strsave((x), areanum)
|
||||
#define BLKSIZ 512
|
||||
#define NDENT ((BLKSIZ+sizeof(struct dirent)-1)/sizeof(struct dirent))
|
||||
|
||||
static struct wdblock *cl, *nl;
|
||||
static char spcl[] = "[?*";
|
||||
|
||||
struct wdblock *
|
||||
glob(cp, wb)
|
||||
char *cp;
|
||||
struct wdblock *wb;
|
||||
{
|
||||
register i;
|
||||
register char *pp;
|
||||
|
||||
if (cp == 0)
|
||||
return(wb);
|
||||
i = 0;
|
||||
for (pp = cp; *pp; pp++)
|
||||
if (any(*pp, spcl))
|
||||
i++;
|
||||
else if (!any(*pp & ~QUOTE, spcl))
|
||||
*pp &= ~QUOTE;
|
||||
if (i != 0) {
|
||||
for (cl = addword(scopy(cp), (struct wdblock *)0); anyspcl(cl); cl = nl) {
|
||||
nl = newword(cl->w_nword*2);
|
||||
for(i=0; i<cl->w_nword; i++) { /* for each argument */
|
||||
for (pp = cl->w_words[i]; *pp; pp++)
|
||||
if (any(*pp, spcl)) {
|
||||
globname(cl->w_words[i], pp);
|
||||
break;
|
||||
}
|
||||
if (*pp == '\0')
|
||||
nl = addword(scopy(cl->w_words[i]), nl);
|
||||
}
|
||||
for(i=0; i<cl->w_nword; i++)
|
||||
DELETE(cl->w_words[i]);
|
||||
DELETE(cl);
|
||||
}
|
||||
for(i=0; i<cl->w_nword; i++)
|
||||
unquote(cl->w_words[i]);
|
||||
glob0((char *)cl->w_words, cl->w_nword, sizeof(char *), xstrcmp);
|
||||
if (cl->w_nword) {
|
||||
for (i=0; i<cl->w_nword; i++)
|
||||
wb = addword(cl->w_words[i], wb);
|
||||
DELETE(cl);
|
||||
return(wb);
|
||||
}
|
||||
}
|
||||
wb = addword(unquote(cp), wb);
|
||||
return(wb);
|
||||
}
|
||||
|
||||
void
|
||||
globname(we, pp)
|
||||
char *we;
|
||||
register char *pp;
|
||||
{
|
||||
register char *np, *cp;
|
||||
char *name, *gp, *dp;
|
||||
int dn, j, n, k;
|
||||
DIR *dirp;
|
||||
struct dirent *de;
|
||||
char dname[NAME_MAX+1];
|
||||
struct stat dbuf;
|
||||
|
||||
for (np = we; np != pp; pp--)
|
||||
if (pp[-1] == '/')
|
||||
break;
|
||||
for (dp = cp = space((int)(pp-np)+3); np < pp;)
|
||||
*cp++ = *np++;
|
||||
*cp++ = '.';
|
||||
*cp = '\0';
|
||||
for (gp = cp = space(strlen(pp)+1); *np && *np != '/';)
|
||||
*cp++ = *np++;
|
||||
*cp = '\0';
|
||||
dirp = opendir(dp);
|
||||
if (dirp == 0) {
|
||||
DELETE(dp);
|
||||
DELETE(gp);
|
||||
return;
|
||||
}
|
||||
dname[NAME_MAX] = '\0';
|
||||
while ((de=readdir(dirp))!=NULL) {
|
||||
/* XXX Hmmm... What this could be? (abial) */
|
||||
/*
|
||||
if (ent[j].d_ino == 0)
|
||||
continue;
|
||||
*/
|
||||
strncpy(dname, de->d_name, NAME_MAX);
|
||||
if (dname[0] == '.')
|
||||
if (*gp != '.')
|
||||
continue;
|
||||
for(k=0; k<NAME_MAX; k++)
|
||||
if (any(dname[k], spcl))
|
||||
dname[k] |= QUOTE;
|
||||
if (gmatch(dname, gp)) {
|
||||
name = generate(we, pp, dname, np);
|
||||
if (*np && !anys(np, spcl)) {
|
||||
if (stat(name,&dbuf)) {
|
||||
DELETE(name);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
nl = addword(name, nl);
|
||||
}
|
||||
}
|
||||
closedir(dirp);
|
||||
DELETE(dp);
|
||||
DELETE(gp);
|
||||
}
|
||||
|
||||
/*
|
||||
* generate a pathname as below.
|
||||
* start..end1 / middle end
|
||||
* the slashes come for free
|
||||
*/
|
||||
static char *
|
||||
generate(start1, end1, middle, end)
|
||||
char *start1;
|
||||
register char *end1;
|
||||
char *middle, *end;
|
||||
{
|
||||
char *p;
|
||||
register char *op, *xp;
|
||||
|
||||
p = op = space((int)(end1-start1)+strlen(middle)+strlen(end)+2);
|
||||
for (xp = start1; xp != end1;)
|
||||
*op++ = *xp++;
|
||||
for (xp = middle; (*op++ = *xp++) != '\0';)
|
||||
;
|
||||
op--;
|
||||
for (xp = end; (*op++ = *xp++) != '\0';)
|
||||
;
|
||||
return(p);
|
||||
}
|
||||
|
||||
static int
|
||||
anyspcl(wb)
|
||||
register struct wdblock *wb;
|
||||
{
|
||||
register i;
|
||||
register char **wd;
|
||||
|
||||
wd = wb->w_words;
|
||||
for (i=0; i<wb->w_nword; i++)
|
||||
if (anys(spcl, *wd++))
|
||||
return(1);
|
||||
return(0);
|
||||
}
|
||||
|
||||
static int
|
||||
xstrcmp(p1, p2)
|
||||
char *p1, *p2;
|
||||
{
|
||||
return(strcmp(*(char **)p1, *(char **)p2));
|
||||
}
|
||||
|
||||
/* -------- word.c -------- */
|
||||
/* #include "sh.h" */
|
||||
/* #include "word.h" */
|
||||
|
||||
#define NSTART 16 /* default number of words to allow for initially */
|
||||
|
||||
struct wdblock *
|
||||
newword(nw)
|
||||
register int nw;
|
||||
{
|
||||
register struct wdblock *wb;
|
||||
|
||||
wb = (struct wdblock *) space(sizeof(*wb) + nw*sizeof(char *));
|
||||
wb->w_bsize = nw;
|
||||
wb->w_nword = 0;
|
||||
return(wb);
|
||||
}
|
||||
|
||||
struct wdblock *
|
||||
addword(wd, wb)
|
||||
char *wd;
|
||||
register struct wdblock *wb;
|
||||
{
|
||||
register struct wdblock *wb2;
|
||||
register nw;
|
||||
|
||||
if (wb == NULL)
|
||||
wb = newword(NSTART);
|
||||
if ((nw = wb->w_nword) >= wb->w_bsize) {
|
||||
wb2 = newword(nw * 2);
|
||||
memcopy((char *)wb2->w_words, (char *)wb->w_words, nw*sizeof(char *));
|
||||
wb2->w_nword = nw;
|
||||
DELETE(wb);
|
||||
wb = wb2;
|
||||
}
|
||||
wb->w_words[wb->w_nword++] = wd;
|
||||
return(wb);
|
||||
}
|
||||
|
||||
char **
|
||||
getwords(wb)
|
||||
register struct wdblock *wb;
|
||||
{
|
||||
register char **wd;
|
||||
register nb;
|
||||
|
||||
if (wb == NULL)
|
||||
return((char **)NULL);
|
||||
if (wb->w_nword == 0) {
|
||||
DELETE(wb);
|
||||
return((char **)NULL);
|
||||
}
|
||||
wd = (char **) space(nb = sizeof(*wd) * wb->w_nword);
|
||||
memcopy((char *)wd, (char *)wb->w_words, nb);
|
||||
DELETE(wb); /* perhaps should done by caller */
|
||||
return(wd);
|
||||
}
|
||||
|
||||
_PROTOTYPE(int (*func), (char *, char *));
|
||||
int globv;
|
||||
|
||||
void
|
||||
glob0(a0, a1, a2, a3)
|
||||
char *a0;
|
||||
unsigned a1;
|
||||
int a2;
|
||||
_PROTOTYPE(int (*a3), (char *, char *));
|
||||
{
|
||||
func = a3;
|
||||
globv = a2;
|
||||
glob1(a0, a0 + a1 * a2);
|
||||
}
|
||||
|
||||
void
|
||||
glob1(base, lim)
|
||||
char *base, *lim;
|
||||
{
|
||||
register char *i, *j;
|
||||
int v2;
|
||||
char *lptr, *hptr;
|
||||
int c;
|
||||
unsigned n;
|
||||
|
||||
|
||||
v2 = globv;
|
||||
|
||||
top:
|
||||
if ((n=(int)(lim-base)) <= v2)
|
||||
return;
|
||||
n = v2 * (n / (2*v2));
|
||||
hptr = lptr = base+n;
|
||||
i = base;
|
||||
j = lim-v2;
|
||||
for(;;) {
|
||||
if (i < lptr) {
|
||||
if ((c = (*func)(i, lptr)) == 0) {
|
||||
glob2(i, lptr -= v2);
|
||||
continue;
|
||||
}
|
||||
if (c < 0) {
|
||||
i += v2;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
begin:
|
||||
if (j > hptr) {
|
||||
if ((c = (*func)(hptr, j)) == 0) {
|
||||
glob2(hptr += v2, j);
|
||||
goto begin;
|
||||
}
|
||||
if (c > 0) {
|
||||
if (i == lptr) {
|
||||
glob3(i, hptr += v2, j);
|
||||
i = lptr += v2;
|
||||
goto begin;
|
||||
}
|
||||
glob2(i, j);
|
||||
j -= v2;
|
||||
i += v2;
|
||||
continue;
|
||||
}
|
||||
j -= v2;
|
||||
goto begin;
|
||||
}
|
||||
|
||||
|
||||
if (i == lptr) {
|
||||
if (lptr-base >= lim-hptr) {
|
||||
glob1(hptr+v2, lim);
|
||||
lim = lptr;
|
||||
} else {
|
||||
glob1(base, lptr);
|
||||
base = hptr+v2;
|
||||
}
|
||||
goto top;
|
||||
}
|
||||
|
||||
|
||||
glob3(j, lptr -= v2, i);
|
||||
j = hptr -= v2;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
glob2(i, j)
|
||||
char *i, *j;
|
||||
{
|
||||
register char *index1, *index2, c;
|
||||
int m;
|
||||
|
||||
m = globv;
|
||||
index1 = i;
|
||||
index2 = j;
|
||||
do {
|
||||
c = *index1;
|
||||
*index1++ = *index2;
|
||||
*index2++ = c;
|
||||
} while(--m);
|
||||
}
|
||||
|
||||
void
|
||||
glob3(i, j, k)
|
||||
char *i, *j, *k;
|
||||
{
|
||||
register char *index1, *index2, *index3;
|
||||
int c;
|
||||
int m;
|
||||
|
||||
m = globv;
|
||||
index1 = i;
|
||||
index2 = j;
|
||||
index3 = k;
|
||||
do {
|
||||
c = *index1;
|
||||
*index1++ = *index3;
|
||||
*index3++ = *index2;
|
||||
*index2++ = c;
|
||||
} while(--m);
|
||||
}
|
||||
|
||||
char *
|
||||
memcopy(ato, from, nb)
|
||||
register char *ato, *from;
|
||||
register int nb;
|
||||
{
|
||||
register char *to;
|
||||
|
||||
to = ato;
|
||||
while (--nb >= 0)
|
||||
*to++ = *from++;
|
||||
return(ato);
|
||||
}
|
||||
|
|
@ -1,675 +0,0 @@
|
|||
#define Extern extern
|
||||
#include <sys/types.h>
|
||||
#include <signal.h>
|
||||
#define _NSIG NSIG
|
||||
#include <errno.h>
|
||||
#include <setjmp.h>
|
||||
#include "sh.h"
|
||||
|
||||
/* -------- io.c -------- */
|
||||
/* #include "sh.h" */
|
||||
|
||||
/*
|
||||
* shell IO
|
||||
*/
|
||||
|
||||
static struct iobuf sharedbuf = {AFID_NOBUF};
|
||||
static struct iobuf mainbuf = {AFID_NOBUF};
|
||||
static unsigned bufid = AFID_ID; /* buffer id counter */
|
||||
|
||||
struct ioarg temparg = {0, 0, 0, AFID_NOBUF, 0};
|
||||
|
||||
_PROTOTYPE(static void readhere, (char **name, char *s, int ec ));
|
||||
_PROTOTYPE(void pushio, (struct ioarg *argp, int (*fn)()));
|
||||
_PROTOTYPE(static int xxchar, (struct ioarg *ap ));
|
||||
_PROTOTYPE(void tempname, (char *tname ));
|
||||
|
||||
int
|
||||
getc(ec)
|
||||
register int ec;
|
||||
{
|
||||
register int c;
|
||||
|
||||
if(e.linep > elinep) {
|
||||
while((c=readc()) != '\n' && c)
|
||||
;
|
||||
err("input line too long");
|
||||
gflg++;
|
||||
return(c);
|
||||
}
|
||||
c = readc();
|
||||
if (ec != '\'' && e.iop->task != XGRAVE) {
|
||||
if(c == '\\') {
|
||||
c = readc();
|
||||
if (c == '\n' && ec != '\"')
|
||||
return(getc(ec));
|
||||
c |= QUOTE;
|
||||
}
|
||||
}
|
||||
return(c);
|
||||
}
|
||||
|
||||
void
|
||||
unget(c)
|
||||
int c;
|
||||
{
|
||||
if (e.iop >= e.iobase)
|
||||
e.iop->peekc = c;
|
||||
}
|
||||
|
||||
int
|
||||
eofc()
|
||||
|
||||
{
|
||||
return e.iop < e.iobase || (e.iop->peekc == 0 && e.iop->prev == 0);
|
||||
}
|
||||
|
||||
int
|
||||
readc()
|
||||
{
|
||||
register c;
|
||||
|
||||
for (; e.iop >= e.iobase; e.iop--)
|
||||
if ((c = e.iop->peekc) != '\0') {
|
||||
e.iop->peekc = 0;
|
||||
return(c);
|
||||
}
|
||||
else {
|
||||
if (e.iop->prev != 0) {
|
||||
if ((c = (*e.iop->iofn)(e.iop->argp, e.iop)) != '\0') {
|
||||
if (c == -1) {
|
||||
e.iop++;
|
||||
continue;
|
||||
}
|
||||
if (e.iop == iostack)
|
||||
ioecho(c);
|
||||
return(e.iop->prev = c);
|
||||
}
|
||||
else if (e.iop->task == XIO && e.iop->prev != '\n') {
|
||||
e.iop->prev = 0;
|
||||
if (e.iop == iostack)
|
||||
ioecho('\n');
|
||||
return '\n';
|
||||
}
|
||||
}
|
||||
if (e.iop->task == XIO) {
|
||||
if (multiline)
|
||||
return e.iop->prev = 0;
|
||||
if (talking && e.iop == iostack+1)
|
||||
prs(prompt->value);
|
||||
}
|
||||
}
|
||||
if (e.iop >= iostack)
|
||||
return(0);
|
||||
leave();
|
||||
/* NOTREACHED */
|
||||
}
|
||||
|
||||
void
|
||||
ioecho(c)
|
||||
char c;
|
||||
{
|
||||
if (flag['v'])
|
||||
write(2, &c, sizeof c);
|
||||
}
|
||||
|
||||
void
|
||||
pushio(argp, fn)
|
||||
struct ioarg *argp;
|
||||
int (*fn)();
|
||||
{
|
||||
if (++e.iop >= &iostack[NPUSH]) {
|
||||
e.iop--;
|
||||
err("Shell input nested too deeply");
|
||||
gflg++;
|
||||
return;
|
||||
}
|
||||
e.iop->iofn = fn;
|
||||
|
||||
if (argp->afid != AFID_NOBUF)
|
||||
e.iop->argp = argp;
|
||||
else {
|
||||
e.iop->argp = ioargstack + (e.iop - iostack);
|
||||
*e.iop->argp = *argp;
|
||||
e.iop->argp->afbuf = e.iop == &iostack[0] ? &mainbuf : &sharedbuf;
|
||||
if (isatty(e.iop->argp->afile) == 0 &&
|
||||
(e.iop == &iostack[0] ||
|
||||
lseek(e.iop->argp->afile, 0L, 1) != -1)) {
|
||||
if (++bufid == AFID_NOBUF)
|
||||
bufid = AFID_ID;
|
||||
e.iop->argp->afid = bufid;
|
||||
}
|
||||
}
|
||||
|
||||
e.iop->prev = ~'\n';
|
||||
e.iop->peekc = 0;
|
||||
e.iop->xchar = 0;
|
||||
e.iop->nlcount = 0;
|
||||
if (fn == filechar || fn == linechar)
|
||||
e.iop->task = XIO;
|
||||
else if (fn == gravechar || fn == qgravechar)
|
||||
e.iop->task = XGRAVE;
|
||||
else
|
||||
e.iop->task = XOTHER;
|
||||
}
|
||||
|
||||
struct io *
|
||||
setbase(ip)
|
||||
struct io *ip;
|
||||
{
|
||||
register struct io *xp;
|
||||
|
||||
xp = e.iobase;
|
||||
e.iobase = ip;
|
||||
return(xp);
|
||||
}
|
||||
|
||||
/*
|
||||
* Input generating functions
|
||||
*/
|
||||
|
||||
/*
|
||||
* Produce the characters of a string, then a newline, then EOF.
|
||||
*/
|
||||
int
|
||||
nlchar(ap)
|
||||
register struct ioarg *ap;
|
||||
{
|
||||
register int c;
|
||||
|
||||
if (ap->aword == NULL)
|
||||
return(0);
|
||||
if ((c = *ap->aword++) == 0) {
|
||||
ap->aword = NULL;
|
||||
return('\n');
|
||||
}
|
||||
return(c);
|
||||
}
|
||||
|
||||
/*
|
||||
* Given a list of words, produce the characters
|
||||
* in them, with a space after each word.
|
||||
*/
|
||||
int
|
||||
wdchar(ap)
|
||||
register struct ioarg *ap;
|
||||
{
|
||||
register char c;
|
||||
register char **wl;
|
||||
|
||||
if ((wl = ap->awordlist) == NULL)
|
||||
return(0);
|
||||
if (*wl != NULL) {
|
||||
if ((c = *(*wl)++) != 0)
|
||||
return(c & 0177);
|
||||
ap->awordlist++;
|
||||
return(' ');
|
||||
}
|
||||
ap->awordlist = NULL;
|
||||
return('\n');
|
||||
}
|
||||
|
||||
/*
|
||||
* Return the characters of a list of words,
|
||||
* producing a space between them.
|
||||
*/
|
||||
int
|
||||
dolchar(ap)
|
||||
register struct ioarg *ap;
|
||||
{
|
||||
register char *wp;
|
||||
|
||||
if ((wp = *ap->awordlist++) != NULL) {
|
||||
PUSHIO(aword, wp, *ap->awordlist == NULL? strchar: xxchar);
|
||||
return(-1);
|
||||
}
|
||||
return(0);
|
||||
}
|
||||
|
||||
static int
|
||||
xxchar(ap)
|
||||
register struct ioarg *ap;
|
||||
{
|
||||
register int c;
|
||||
|
||||
if (ap->aword == NULL)
|
||||
return(0);
|
||||
if ((c = *ap->aword++) == '\0') {
|
||||
ap->aword = NULL;
|
||||
return(' ');
|
||||
}
|
||||
return(c);
|
||||
}
|
||||
|
||||
/*
|
||||
* Produce the characters from a single word (string).
|
||||
*/
|
||||
int
|
||||
strchar(ap)
|
||||
register struct ioarg *ap;
|
||||
{
|
||||
register int c;
|
||||
|
||||
if (ap->aword == NULL || (c = *ap->aword++) == 0)
|
||||
return(0);
|
||||
return(c);
|
||||
}
|
||||
|
||||
/*
|
||||
* Produce quoted characters from a single word (string).
|
||||
*/
|
||||
int
|
||||
qstrchar(ap)
|
||||
register struct ioarg *ap;
|
||||
{
|
||||
register int c;
|
||||
|
||||
if (ap->aword == NULL || (c = *ap->aword++) == 0)
|
||||
return(0);
|
||||
return(c|QUOTE);
|
||||
}
|
||||
|
||||
/*
|
||||
* Return the characters from a file.
|
||||
*/
|
||||
int
|
||||
filechar(ap)
|
||||
register struct ioarg *ap;
|
||||
{
|
||||
register int i;
|
||||
char c;
|
||||
struct iobuf *bp = ap->afbuf;
|
||||
|
||||
if (ap->afid != AFID_NOBUF) {
|
||||
if ((i = ap->afid != bp->id) || bp->bufp == bp->ebufp) {
|
||||
if (i)
|
||||
lseek(ap->afile, ap->afpos, 0);
|
||||
do {
|
||||
i = read(ap->afile, bp->buf, sizeof(bp->buf));
|
||||
} while (i < 0 && errno == EINTR);
|
||||
if (i <= 0) {
|
||||
closef(ap->afile);
|
||||
return 0;
|
||||
}
|
||||
bp->id = ap->afid;
|
||||
bp->ebufp = (bp->bufp = bp->buf) + i;
|
||||
}
|
||||
ap->afpos++;
|
||||
return *bp->bufp++ & 0177;
|
||||
}
|
||||
|
||||
do {
|
||||
i = read(ap->afile, &c, sizeof(c));
|
||||
} while (i < 0 && errno == EINTR);
|
||||
return(i == sizeof(c)? c&0177: (closef(ap->afile), 0));
|
||||
}
|
||||
|
||||
/*
|
||||
* Return the characters from a here temp file.
|
||||
*/
|
||||
int
|
||||
herechar(ap)
|
||||
register struct ioarg *ap;
|
||||
{
|
||||
char c;
|
||||
|
||||
|
||||
if (read(ap->afile, &c, sizeof(c)) != sizeof(c)) {
|
||||
close(ap->afile);
|
||||
c = 0;
|
||||
}
|
||||
return (c);
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Return the characters produced by a process (`...`).
|
||||
* Quote them if required, and remove any trailing newline characters.
|
||||
*/
|
||||
int
|
||||
gravechar(ap, iop)
|
||||
struct ioarg *ap;
|
||||
struct io *iop;
|
||||
{
|
||||
register int c;
|
||||
|
||||
if ((c = qgravechar(ap, iop)&~QUOTE) == '\n')
|
||||
c = ' ';
|
||||
return(c);
|
||||
}
|
||||
|
||||
int
|
||||
qgravechar(ap, iop)
|
||||
register struct ioarg *ap;
|
||||
struct io *iop;
|
||||
{
|
||||
register int c;
|
||||
|
||||
if (iop->xchar) {
|
||||
if (iop->nlcount) {
|
||||
iop->nlcount--;
|
||||
return('\n'|QUOTE);
|
||||
}
|
||||
c = iop->xchar;
|
||||
iop->xchar = 0;
|
||||
} else if ((c = filechar(ap)) == '\n') {
|
||||
iop->nlcount = 1;
|
||||
while ((c = filechar(ap)) == '\n')
|
||||
iop->nlcount++;
|
||||
iop->xchar = c;
|
||||
if (c == 0)
|
||||
return(c);
|
||||
iop->nlcount--;
|
||||
c = '\n';
|
||||
}
|
||||
return(c!=0? c|QUOTE: 0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Return a single command (usually the first line) from a file.
|
||||
*/
|
||||
int
|
||||
linechar(ap)
|
||||
register struct ioarg *ap;
|
||||
{
|
||||
register int c;
|
||||
|
||||
if ((c = filechar(ap)) == '\n') {
|
||||
if (!multiline) {
|
||||
closef(ap->afile);
|
||||
ap->afile = -1; /* illegal value */
|
||||
}
|
||||
}
|
||||
return(c);
|
||||
}
|
||||
|
||||
void
|
||||
prs(s)
|
||||
register char *s;
|
||||
{
|
||||
if (*s)
|
||||
write(2, s, strlen(s));
|
||||
}
|
||||
|
||||
void
|
||||
putc(c)
|
||||
char c;
|
||||
{
|
||||
write(2, &c, sizeof c);
|
||||
}
|
||||
|
||||
void
|
||||
prn(u)
|
||||
unsigned u;
|
||||
{
|
||||
prs(itoa(u, 0));
|
||||
}
|
||||
|
||||
void
|
||||
closef(i)
|
||||
register int i;
|
||||
{
|
||||
if (i > 2)
|
||||
close(i);
|
||||
}
|
||||
|
||||
void
|
||||
closeall()
|
||||
{
|
||||
register u;
|
||||
|
||||
for (u=NUFILE; u<NOFILE;)
|
||||
close(u++);
|
||||
}
|
||||
|
||||
/*
|
||||
* remap fd into Shell's fd space
|
||||
*/
|
||||
int
|
||||
remap(fd)
|
||||
register int fd;
|
||||
{
|
||||
register int i;
|
||||
int map[NOFILE];
|
||||
|
||||
if (fd < e.iofd) {
|
||||
for (i=0; i<NOFILE; i++)
|
||||
map[i] = 0;
|
||||
do {
|
||||
map[fd] = 1;
|
||||
fd = dup(fd);
|
||||
} while (fd >= 0 && fd < e.iofd);
|
||||
for (i=0; i<NOFILE; i++)
|
||||
if (map[i])
|
||||
close(i);
|
||||
if (fd < 0)
|
||||
err("too many files open in shell");
|
||||
}
|
||||
return(fd);
|
||||
}
|
||||
|
||||
int
|
||||
openpipe(pv)
|
||||
register int *pv;
|
||||
{
|
||||
register int i;
|
||||
|
||||
if ((i = pipe(pv)) < 0)
|
||||
err("can't create pipe - try again");
|
||||
return(i);
|
||||
}
|
||||
|
||||
void
|
||||
closepipe(pv)
|
||||
register int *pv;
|
||||
{
|
||||
if (pv != NULL) {
|
||||
close(*pv++);
|
||||
close(*pv);
|
||||
}
|
||||
}
|
||||
|
||||
/* -------- here.c -------- */
|
||||
/* #include "sh.h" */
|
||||
|
||||
/*
|
||||
* here documents
|
||||
*/
|
||||
|
||||
struct here {
|
||||
char *h_tag;
|
||||
int h_dosub;
|
||||
struct ioword *h_iop;
|
||||
struct here *h_next;
|
||||
};
|
||||
|
||||
static struct here *inhere; /* list of hear docs while parsing */
|
||||
static struct here *acthere; /* list of active here documents */
|
||||
|
||||
void
|
||||
markhere(s, iop)
|
||||
register char *s;
|
||||
struct ioword *iop;
|
||||
{
|
||||
register struct here *h, *lh;
|
||||
|
||||
h = (struct here *) space(sizeof(struct here));
|
||||
if (h == 0)
|
||||
return;
|
||||
h->h_tag = evalstr(s, DOSUB);
|
||||
if (h->h_tag == 0)
|
||||
return;
|
||||
h->h_iop = iop;
|
||||
iop->io_name = 0;
|
||||
h->h_next = NULL;
|
||||
if (inhere == 0)
|
||||
inhere = h;
|
||||
else
|
||||
for (lh = inhere; lh!=NULL; lh = lh->h_next)
|
||||
if (lh->h_next == 0) {
|
||||
lh->h_next = h;
|
||||
break;
|
||||
}
|
||||
iop->io_flag |= IOHERE|IOXHERE;
|
||||
for (s = h->h_tag; *s; s++)
|
||||
if (*s & QUOTE) {
|
||||
iop->io_flag &= ~ IOXHERE;
|
||||
*s &= ~ QUOTE;
|
||||
}
|
||||
h->h_dosub = iop->io_flag & IOXHERE;
|
||||
}
|
||||
|
||||
void
|
||||
gethere()
|
||||
{
|
||||
register struct here *h, *hp;
|
||||
|
||||
/* Scan here files first leaving inhere list in place */
|
||||
for (hp = h = inhere; h != NULL; hp = h, h = h->h_next)
|
||||
readhere(&h->h_iop->io_name, h->h_tag, h->h_dosub? 0: '\'');
|
||||
|
||||
/* Make inhere list active - keep list intact for scraphere */
|
||||
if (hp != NULL) {
|
||||
hp->h_next = acthere;
|
||||
acthere = inhere;
|
||||
inhere = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
readhere(name, s, ec)
|
||||
char **name;
|
||||
register char *s;
|
||||
int ec;
|
||||
{
|
||||
int tf;
|
||||
char tname[30];
|
||||
register c;
|
||||
jmp_buf ev;
|
||||
char line [LINELIM+1];
|
||||
char *next;
|
||||
|
||||
tempname(tname);
|
||||
*name = strsave(tname, areanum);
|
||||
tf = creat(tname, 0600);
|
||||
if (tf < 0)
|
||||
return;
|
||||
if (newenv(setjmp(errpt = ev)) != 0)
|
||||
unlink(tname);
|
||||
else {
|
||||
pushio(e.iop->argp, e.iop->iofn);
|
||||
e.iobase = e.iop;
|
||||
for (;;) {
|
||||
if (talking && e.iop <= iostack)
|
||||
prs(cprompt->value);
|
||||
next = line;
|
||||
while ((c = getc(ec)) != '\n' && c) {
|
||||
if (ec == '\'')
|
||||
c &= ~ QUOTE;
|
||||
if (next >= &line[LINELIM]) {
|
||||
c = 0;
|
||||
break;
|
||||
}
|
||||
*next++ = c;
|
||||
}
|
||||
*next = 0;
|
||||
if (strcmp(s, line) == 0 || c == 0)
|
||||
break;
|
||||
*next++ = '\n';
|
||||
write (tf, line, (int)(next-line));
|
||||
}
|
||||
if (c == 0) {
|
||||
prs("here document `"); prs(s); err("' unclosed");
|
||||
}
|
||||
quitenv();
|
||||
}
|
||||
close(tf);
|
||||
}
|
||||
|
||||
/*
|
||||
* open here temp file.
|
||||
* if unquoted here, expand here temp file into second temp file.
|
||||
*/
|
||||
int
|
||||
herein(hname, xdoll)
|
||||
char *hname;
|
||||
int xdoll;
|
||||
{
|
||||
register hf, tf;
|
||||
|
||||
if (hname == 0)
|
||||
return(-1);
|
||||
hf = open(hname, 0);
|
||||
if (hf < 0)
|
||||
return (-1);
|
||||
if (xdoll) {
|
||||
char c;
|
||||
char tname[30];
|
||||
jmp_buf ev;
|
||||
|
||||
tempname(tname);
|
||||
if ((tf = creat(tname, 0600)) < 0)
|
||||
return (-1);
|
||||
if (newenv(setjmp(errpt = ev)) == 0) {
|
||||
PUSHIO(afile, hf, herechar);
|
||||
setbase(e.iop);
|
||||
while ((c = subgetc(0, 0)) != 0) {
|
||||
c &= ~ QUOTE;
|
||||
write(tf, &c, sizeof c);
|
||||
}
|
||||
quitenv();
|
||||
} else
|
||||
unlink(tname);
|
||||
close(tf);
|
||||
tf = open(tname, 0);
|
||||
unlink(tname);
|
||||
return (tf);
|
||||
} else
|
||||
return (hf);
|
||||
}
|
||||
|
||||
void
|
||||
scraphere()
|
||||
{
|
||||
register struct here *h;
|
||||
|
||||
for (h = inhere; h != NULL; h = h->h_next) {
|
||||
if (h->h_iop && h->h_iop->io_name)
|
||||
unlink(h->h_iop->io_name);
|
||||
}
|
||||
inhere = NULL;
|
||||
}
|
||||
|
||||
/* unlink here temp files before a freearea(area) */
|
||||
void
|
||||
freehere(area)
|
||||
int area;
|
||||
{
|
||||
register struct here *h, *hl;
|
||||
|
||||
hl = NULL;
|
||||
for (h = acthere; h != NULL; h = h->h_next)
|
||||
if (getarea((char *) h) >= area) {
|
||||
if (h->h_iop->io_name != NULL)
|
||||
unlink(h->h_iop->io_name);
|
||||
if (hl == NULL)
|
||||
acthere = h->h_next;
|
||||
else
|
||||
hl->h_next = h->h_next;
|
||||
} else
|
||||
hl = h;
|
||||
}
|
||||
|
||||
void
|
||||
tempname(tname)
|
||||
char *tname;
|
||||
{
|
||||
static int inc;
|
||||
register char *cp, *lp;
|
||||
|
||||
for (cp = tname, lp = "/tmp/shtm"; (*cp = *lp++) != '\0'; cp++)
|
||||
;
|
||||
lp = putn(getpid()*1000 + inc++);
|
||||
for (; (*cp = *lp++) != '\0'; cp++)
|
||||
;
|
||||
}
|
||||
|
|
@ -1,9 +0,0 @@
|
|||
#define Extern
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <signal.h>
|
||||
#define _NSIG NSIG
|
||||
#include <errno.h>
|
||||
#include <setjmp.h>
|
||||
#include "sh.h"
|
||||
|
||||
Loading…
Reference in a new issue