wine/debugger/editline.c
Patrik Stridvall 1ed4ecffa8 ANSI C fixes.
Removed warnings.
Made the include files self-sufficient.
Some Solaris fixes.
1999-06-26 14:58:24 +00:00

1359 lines
23 KiB
C
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/*
* Line-editing routines
*
* Copyright 1992 Simmule Turner and Rich Salz. All rights reserved.
*
*
* This software is not subject to any license of the American Telephone
* and Telegraph Company or of the Regents of the University of California.
*
* Permission is granted to anyone to use this software for any purpose on
* any computer system, and to alter it and redistribute it freely, subject
* to the following restrictions:
* 1. The authors are not responsible for the consequences of use of this
* software, no matter how awful, even if they arise from flaws in it.
* 2. The origin of this software must not be misrepresented, either by
* explicit claim or by omission. Since few users ever read sources,
* credits must appear in the documentation.
* 3. Altered versions must be plainly marked as such, and must not be
* misrepresented as being the original software. Since few users
* ever read sources, credits must appear in the documentation.
* 4. This notice may not be removed or altered.
*
* The code was heavily simplified for inclusion in Wine. -- AJ
*/
#include "config.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "windef.h"
#include "debugger.h"
/*
** Manifest constants.
*/
#define SCREEN_WIDTH 80
#define SCREEN_ROWS 24
#define NO_ARG (-1)
#define DEL 127
#define CTL(x) ((x) & 0x1F)
#define ISCTL(x) ((x) && (x) < ' ')
#define UNCTL(x) ((x) + 64)
#define META(x) ((x) | 0x80)
#define ISMETA(x) ((x) & 0x80)
#define UNMETA(x) ((x) & 0x7F)
#if !defined(HIST_SIZE)
#define HIST_SIZE 20
#endif /* !defined(HIST_SIZE) */
#define CRLF "\r\n"
#define MEM_INC 64
#define SCREEN_INC 256
#define DISPOSE(p) DBG_free((char *)(p))
#define NEW(T, c) \
((T *)DBG_alloc((unsigned int)(sizeof (T) * (c))))
#define RENEW(p, T, c) \
(p = (T *)DBG_realloc((char *)(p), (unsigned int)(sizeof (T) * (c))))
#define COPYFROMTO(new, p, len) \
(void)memcpy((char *)(new), (char *)(p), (int)(len))
/*
** Command status codes.
*/
typedef enum _STATUS {
CSdone, CSeof, CSmove, CSdispatch, CSstay
} STATUS;
/*
** The type of case-changing to perform.
*/
typedef enum _CASE {
TOupper, TOlower
} CASE;
/*
** Key to command mapping.
*/
typedef struct _KEYMAP {
CHAR Key;
STATUS (*Function)();
} KEYMAP;
/*
** Command history structure.
*/
typedef struct _HISTORY {
int Size;
int Pos;
CHAR *Lines[HIST_SIZE];
} HISTORY;
/*
** Globals.
*/
static int rl_eof;
static int rl_erase;
static int rl_intr;
static int rl_kill;
static CHAR NIL[] = "";
static const CHAR *Input = NIL;
static CHAR *Line;
static const char *Prompt;
static CHAR *Yanked;
static char *Screen;
static char NEWLINE[]= CRLF;
static HISTORY H;
static int rl_quit;
static int Repeat;
static int End;
static int Mark;
static int OldPoint;
static int Point;
static int PushBack;
static int Pushed;
static KEYMAP Map[33];
static KEYMAP MetaMap[16];
static size_t Length;
static size_t ScreenCount;
static size_t ScreenSize;
static char *backspace;
static int TTYwidth;
static int TTYrows;
/* Display print 8-bit chars as `M-x' or as the actual 8-bit char? */
int rl_meta_chars = 1;
/*
** Declarations.
*/
static CHAR *editinput();
extern int read();
extern int write();
#if defined(USE_TERMCAP)
extern char *getenv();
extern char *tgetstr();
extern int tgetent();
#endif /* defined(USE_TERMCAP) */
/*
** TTY input/output functions.
*/
#ifdef HAVE_TCGETATTR
#include <termios.h>
static void
rl_ttyset(int Reset)
{
static struct termios old;
struct termios new;
if (Reset == 0) {
(void)tcgetattr(0, &old);
rl_erase = old.c_cc[VERASE];
rl_kill = old.c_cc[VKILL];
rl_eof = old.c_cc[VEOF];
rl_intr = old.c_cc[VINTR];
rl_quit = old.c_cc[VQUIT];
new = old;
new.c_cc[VINTR] = -1;
new.c_cc[VQUIT] = -1;
new.c_lflag &= ~(ECHO | ICANON);
new.c_iflag &= ~(ISTRIP | INPCK);
new.c_cc[VMIN] = 1;
new.c_cc[VTIME] = 0;
(void)tcsetattr(0, TCSANOW, &new);
}
else
(void)tcsetattr(0, TCSANOW, &old);
}
#else /* HAVE_TCGETATTR */
static void
rl_ttyset(int Reset)
{
static struct sgttyb old_sgttyb;
static struct tchars old_tchars;
struct sgttyb new_sgttyb;
struct tchars new_tchars;
if (Reset == 0) {
(void)ioctl(0, TIOCGETP, &old_sgttyb);
rl_erase = old_sgttyb.sg_erase;
rl_kill = old_sgttyb.sg_kill;
(void)ioctl(0, TIOCGETC, &old_tchars);
rl_eof = old_tchars.t_eofc;
rl_intr = old_tchars.t_intrc;
rl_quit = old_tchars.t_quitc;
new_sgttyb = old_sgttyb;
new_sgttyb.sg_flags &= ~ECHO;
new_sgttyb.sg_flags |= RAW;
#if defined(PASS8)
new_sgttyb.sg_flags |= PASS8;
#endif /* defined(PASS8) */
(void)ioctl(0, TIOCSETP, &new_sgttyb);
new_tchars = old_tchars;
new_tchars.t_intrc = -1;
new_tchars.t_quitc = -1;
(void)ioctl(0, TIOCSETC, &new_tchars);
}
else {
(void)ioctl(0, TIOCSETP, &old_sgttyb);
(void)ioctl(0, TIOCSETC, &old_tchars);
}
}
#endif /* HAVE_TCGETATTR */
static void
TTYflush(void)
{
if (ScreenCount) {
(void)write(1, Screen, ScreenCount);
ScreenCount = 0;
}
}
static void
TTYput(CHAR c)
{
Screen[ScreenCount] = c;
if (++ScreenCount >= ScreenSize - 1) {
ScreenSize += SCREEN_INC;
RENEW(Screen, char, ScreenSize);
}
}
static void
TTYputs(CHAR *p)
{
while (*p)
TTYput(*p++);
}
static void
TTYshow(CHAR c)
{
if (c == DEL) {
TTYput('^');
TTYput('?');
}
else if (ISCTL(c)) {
TTYput('^');
TTYput(UNCTL(c));
}
else if (rl_meta_chars && ISMETA(c)) {
TTYput('M');
TTYput('-');
TTYput(UNMETA(c));
}
else
TTYput(c);
}
static void
TTYstring(CHAR *p)
{
while (*p)
TTYshow(*p++);
}
static unsigned int
TTYget(void)
{
CHAR c;
int retv;
TTYflush();
if (Pushed) {
Pushed = 0;
return PushBack;
}
if (*Input)
return *Input++;
while ( ( retv = read( 0, &c, (size_t)1 ) ) == -1 )
{
if ( errno != EINTR )
{
perror( "read" );
return EOF;
}
}
return retv == 1 ? c : EOF;
}
#define TTYback() (backspace ? TTYputs((CHAR *)backspace) : TTYput('\b'))
static void
TTYbackn(int n)
{
while (--n >= 0)
TTYback();
}
static void
TTYinfo(void)
{
static int init;
#if defined(USE_TERMCAP)
char *term;
char buff[2048];
char *bp;
#endif /* defined(USE_TERMCAP) */
#if defined(TIOCGWINSZ)
struct winsize W;
#endif /* defined(TIOCGWINSZ) */
if (init) {
#if defined(TIOCGWINSZ)
/* Perhaps we got resized. */
if (ioctl(0, TIOCGWINSZ, &W) >= 0
&& W.ws_col > 0 && W.ws_row > 0) {
TTYwidth = (int)W.ws_col;
TTYrows = (int)W.ws_row;
}
#endif /* defined(TIOCGWINSZ) */
return;
}
init++;
TTYwidth = TTYrows = 0;
#if defined(USE_TERMCAP)
bp = &buff[0];
if ((term = getenv("TERM")) == NULL)
term = "dumb";
if (tgetent(buff, term) < 0) {
TTYwidth = SCREEN_WIDTH;
TTYrows = SCREEN_ROWS;
return;
}
backspace = tgetstr("le", &bp);
TTYwidth = tgetnum("co");
TTYrows = tgetnum("li");
#endif /* defined(USE_TERMCAP) */
#if defined(TIOCGWINSZ)
if (ioctl(0, TIOCGWINSZ, &W) >= 0) {
TTYwidth = (int)W.ws_col;
TTYrows = (int)W.ws_row;
}
#endif /* defined(TIOCGWINSZ) */
if (TTYwidth <= 0 || TTYrows <= 0) {
TTYwidth = SCREEN_WIDTH;
TTYrows = SCREEN_ROWS;
}
}
static void
reposition(void)
{
int i;
CHAR *p;
TTYput('\r');
TTYputs((CHAR *)Prompt);
for (i = Point, p = Line; --i >= 0; p++)
TTYshow(*p);
}
static void
left(STATUS Change)
{
TTYback();
if (Point) {
if (ISCTL(Line[Point - 1]))
TTYback();
else if (rl_meta_chars && ISMETA(Line[Point - 1])) {
TTYback();
TTYback();
}
}
if (Change == CSmove)
Point--;
}
static void
right(STATUS Change)
{
TTYshow(Line[Point]);
if (Change == CSmove)
Point++;
}
static STATUS
ring_bell(void)
{
TTYput('\07');
TTYflush();
return CSstay;
}
static STATUS
do_macro(unsigned int c)
{
CHAR name[4];
name[0] = '_';
name[1] = c;
name[2] = '_';
name[3] = '\0';
if ((Input = (CHAR *)getenv((char *)name)) == NULL) {
Input = NIL;
return ring_bell();
}
return CSstay;
}
static STATUS
do_forward(STATUS move)
{
int i;
CHAR *p;
i = 0;
do {
p = &Line[Point];
for ( ; Point < End && (*p == ' ' || !isalnum(*p)); Point++, p++)
if (move == CSmove)
right(CSstay);
for (; Point < End && isalnum(*p); Point++, p++)
if (move == CSmove)
right(CSstay);
if (Point == End)
break;
} while (++i < Repeat);
return CSstay;
}
static STATUS
do_case(CASE type)
{
int i;
int end;
int count;
CHAR *p;
(void)do_forward(CSstay);
if (OldPoint != Point) {
if ((count = Point - OldPoint) < 0)
count = -count;
Point = OldPoint;
if ((end = Point + count) > End)
end = End;
for (i = Point, p = &Line[i]; i < end; i++, p++) {
if (type == TOupper) {
if (islower(*p))
*p = toupper(*p);
}
else if (isupper(*p))
*p = tolower(*p);
right(CSmove);
}
}
return CSstay;
}
static STATUS
case_down_word(void)
{
return do_case(TOlower);
}
static STATUS
case_up_word(void)
{
return do_case(TOupper);
}
static void
ceol(void)
{
int extras;
int i;
CHAR *p;
for (extras = 0, i = Point, p = &Line[i]; i <= End; i++, p++) {
TTYput(' ');
if (ISCTL(*p)) {
TTYput(' ');
extras++;
}
else if (rl_meta_chars && ISMETA(*p)) {
TTYput(' ');
TTYput(' ');
extras += 2;
}
}
for (i += extras; i > Point; i--)
TTYback();
}
static void
clear_line(void)
{
Point = -strlen(Prompt);
TTYput('\r');
ceol();
Point = 0;
End = 0;
Line[0] = '\0';
}
static STATUS
insert_string(CHAR *p)
{
size_t len;
int i;
CHAR *new;
CHAR *q;
len = strlen((char *)p);
if (End + len >= Length) {
if ((new = NEW(CHAR, Length + len + MEM_INC)) == NULL)
return CSstay;
if (Length) {
COPYFROMTO(new, Line, Length);
DISPOSE(Line);
}
Line = new;
Length += len + MEM_INC;
}
for (q = &Line[Point], i = End - Point; --i >= 0; )
q[len + i] = q[i];
COPYFROMTO(&Line[Point], p, len);
End += len;
Line[End] = '\0';
TTYstring(&Line[Point]);
Point += len;
return Point == End ? CSstay : CSmove;
}
static CHAR *
next_hist(void)
{
return H.Pos >= H.Size - 1 ? NULL : H.Lines[++H.Pos];
}
static CHAR *
prev_hist()
{
return H.Pos == 0 ? NULL : H.Lines[--H.Pos];
}
static STATUS
do_insert_hist(CHAR *p)
{
if (p == NULL)
return ring_bell();
Point = 0;
reposition();
ceol();
End = 0;
return insert_string(p);
}
static STATUS
do_hist(CHAR *(*move)(void))
{
CHAR *p;
int i;
i = 0;
do {
if ((p = (*move)()) == NULL)
return ring_bell();
} while (++i < Repeat);
return do_insert_hist(p);
}
static STATUS
h_next(void)
{
return do_hist(next_hist);
}
static STATUS
h_prev(void)
{
return do_hist(prev_hist);
}
static STATUS
h_first(void)
{
return do_insert_hist(H.Lines[H.Pos = 0]);
}
static STATUS
h_last(void)
{
return do_insert_hist(H.Lines[H.Pos = H.Size - 1]);
}
/*
** Return zero if pat appears as a substring in text.
*/
static int
substrcmp(char *text, char *pat, int len)
{
CHAR c;
if ((c = *pat) == '\0')
return *text == '\0';
for ( ; *text; text++)
if ((CHAR)*text == c && strncmp(text, pat, len) == 0)
return 0;
return 1;
}
static CHAR *
search_hist(CHAR *search, CHAR *(*move)(void))
{
static CHAR *old_search;
int len;
int pos;
int (*match)();
char *pat;
/* Save or get remembered search pattern. */
if (search && *search) {
if (old_search)
DISPOSE(old_search);
old_search = (CHAR *)DBG_strdup((char *)search);
}
else {
if (old_search == NULL || *old_search == '\0')
return NULL;
search = old_search;
}
/* Set up pattern-finder. */
if (*search == '^') {
match = strncmp;
pat = (char *)(search + 1);
}
else {
match = substrcmp;
pat = (char *)search;
}
len = strlen(pat);
for (pos = H.Pos; (*move)() != NULL; )
if ((*match)((char *)H.Lines[H.Pos], pat, len) == 0)
return H.Lines[H.Pos];
H.Pos = pos;
return NULL;
}
static STATUS
h_search(void)
{
static int Searching;
const char *old_prompt;
CHAR *(*move)();
CHAR *p;
if (Searching)
return ring_bell();
Searching = 1;
clear_line();
old_prompt = Prompt;
Prompt = "Search: ";
TTYputs((CHAR *)Prompt);
move = Repeat == NO_ARG ? prev_hist : next_hist;
p = search_hist(editinput(), move);
clear_line();
Prompt = old_prompt;
TTYputs((CHAR *)Prompt);
Searching = 0;
return do_insert_hist(p);
}
static STATUS
fd_char(void)
{
int i;
i = 0;
do {
if (Point >= End)
break;
right(CSmove);
} while (++i < Repeat);
return CSstay;
}
static void
save_yank(int begin, int i)
{
if (Yanked) {
DISPOSE(Yanked);
Yanked = NULL;
}
if (i < 1)
return;
if ((Yanked = NEW(CHAR, (size_t)i + 1)) != NULL) {
COPYFROMTO(Yanked, &Line[begin], i);
Yanked[i] = '\0';
}
}
static STATUS
delete_string(int count)
{
int i;
CHAR *p;
if (count <= 0 || End == Point)
return ring_bell();
if (count == 1 && Point == End - 1) {
/* Optimize common case of delete at end of line. */
End--;
p = &Line[Point];
i = 1;
TTYput(' ');
if (ISCTL(*p)) {
i = 2;
TTYput(' ');
}
else if (rl_meta_chars && ISMETA(*p)) {
i = 3;
TTYput(' ');
TTYput(' ');
}
TTYbackn(i);
*p = '\0';
return CSmove;
}
if (Point + count > End && (count = End - Point) <= 0)
return CSstay;
if (count > 1)
save_yank(Point, count);
for (p = &Line[Point], i = End - (Point + count) + 1; --i >= 0; p++)
p[0] = p[count];
ceol();
End -= count;
TTYstring(&Line[Point]);
return CSmove;
}
static STATUS
bk_char(void)
{
int i;
i = 0;
do {
if (Point == 0)
break;
left(CSmove);
} while (++i < Repeat);
return CSstay;
}
static STATUS
bk_del_char(void)
{
int i;
i = 0;
do {
if (Point == 0)
break;
left(CSmove);
} while (++i < Repeat);
return delete_string(i);
}
static STATUS
redisplay(void)
{
TTYputs((CHAR *)NEWLINE);
TTYputs((CHAR *)Prompt);
TTYstring(Line);
return CSmove;
}
static STATUS
kill_line(void)
{
int i;
if (Repeat != NO_ARG) {
if (Repeat < Point) {
i = Point;
Point = Repeat;
reposition();
(void)delete_string(i - Point);
}
else if (Repeat > Point) {
right(CSmove);
(void)delete_string(Repeat - Point - 1);
}
return CSmove;
}
save_yank(Point, End - Point);
Line[Point] = '\0';
ceol();
End = Point;
return CSstay;
}
static STATUS
insert_char(int c)
{
STATUS s;
CHAR buff[2];
CHAR *p;
CHAR *q;
int i;
if (Repeat == NO_ARG || Repeat < 2) {
buff[0] = c;
buff[1] = '\0';
return insert_string(buff);
}
if ((p = NEW(CHAR, Repeat + 1)) == NULL)
return CSstay;
for (i = Repeat, q = p; --i >= 0; )
*q++ = c;
*q = '\0';
Repeat = 0;
s = insert_string(p);
DISPOSE(p);
return s;
}
static STATUS
meta(void)
{
unsigned int c;
KEYMAP *kp;
if ((c = TTYget()) == EOF)
return CSeof;
/* Also include VT-100 arrows. */
if (c == '[' || c == 'O')
switch (c = TTYget()) {
default: return ring_bell();
case EOF: return CSeof;
case 'A': return h_prev();
case 'B': return h_next();
case 'C': return fd_char();
case 'D': return bk_char();
}
if (isdigit(c)) {
for (Repeat = c - '0'; (c = TTYget()) != EOF && isdigit(c); )
Repeat = Repeat * 10 + c - '0';
Pushed = 1;
PushBack = c;
return CSstay;
}
if (isupper(c))
return do_macro(c);
for (OldPoint = Point, kp = MetaMap; kp->Function; kp++)
if (kp->Key == c)
return (*kp->Function)();
return ring_bell();
}
static STATUS
emacs(unsigned int c)
{
STATUS s;
KEYMAP *kp;
if (ISMETA(c)) {
Pushed = 1;
PushBack = UNMETA(c);
return meta();
}
for (kp = Map; kp->Function; kp++)
if (kp->Key == c)
break;
s = kp->Function ? (*kp->Function)() : insert_char((int)c);
if (!Pushed)
/* No pushback means no repeat count; hacky, but true. */
Repeat = NO_ARG;
return s;
}
static STATUS
TTYspecial(unsigned int c)
{
if (ISMETA(c))
return CSdispatch;
if (c == rl_erase || c == DEL)
return bk_del_char();
if (c == rl_kill) {
if (Point != 0) {
Point = 0;
reposition();
}
Repeat = NO_ARG;
return kill_line();
}
if (c == rl_intr || c == rl_quit) {
Point = End = 0;
Line[0] = '\0';
return redisplay();
}
if (c == rl_eof && Point == 0 && End == 0)
return CSeof;
return CSdispatch;
}
static CHAR *
editinput(void)
{
unsigned int c;
Repeat = NO_ARG;
OldPoint = Point = Mark = End = 0;
Line[0] = '\0';
while ((c = TTYget()) != EOF)
switch (TTYspecial(c)) {
case CSdone:
return Line;
case CSeof:
return NULL;
case CSmove:
reposition();
break;
case CSdispatch:
switch (emacs(c)) {
case CSdone:
return Line;
case CSeof:
return NULL;
case CSmove:
reposition();
break;
case CSdispatch:
case CSstay:
break;
}
break;
case CSstay:
break;
}
return NULL;
}
static void
hist_add(CHAR *p)
{
int i;
if ((p = (CHAR *)DBG_strdup((char *)p)) == NULL)
return;
if (H.Size < HIST_SIZE)
H.Lines[H.Size++] = p;
else {
DISPOSE(H.Lines[0]);
for (i = 0; i < HIST_SIZE - 1; i++)
H.Lines[i] = H.Lines[i + 1];
H.Lines[i] = p;
}
H.Pos = H.Size - 1;
}
char *
readline(const char *prompt)
{
CHAR *line;
if (Line == NULL) {
Length = MEM_INC;
if ((Line = NEW(CHAR, Length)) == NULL)
return NULL;
}
TTYinfo();
rl_ttyset(0);
hist_add(NIL);
ScreenSize = SCREEN_INC;
Screen = NEW(char, ScreenSize);
Prompt = prompt ? prompt : (char *)NIL;
TTYputs((CHAR *)Prompt);
if ((line = editinput()) != NULL) {
line = (CHAR *)DBG_strdup((char *)line);
TTYputs((CHAR *)NEWLINE);
TTYflush();
}
rl_ttyset(1);
DISPOSE(Screen);
DISPOSE(H.Lines[--H.Size]);
return (char *)line;
}
void
add_history(char *p)
{
if (p == NULL || *p == '\0')
return;
#if defined(UNIQUE_HISTORY)
if (H.Pos && strcmp(p, H.Lines[H.Pos - 1]) == 0)
return;
#endif /* defined(UNIQUE_HISTORY) */
hist_add((CHAR *)p);
}
static STATUS
beg_line(void)
{
if (Point) {
Point = 0;
return CSmove;
}
return CSstay;
}
static STATUS
del_char(void)
{
return delete_string(Repeat == NO_ARG ? 1 : Repeat);
}
static STATUS
end_line(void)
{
if (Point != End) {
Point = End;
return CSmove;
}
return CSstay;
}
static STATUS
accept_line(void)
{
Line[End] = '\0';
return CSdone;
}
static STATUS
transpose(void)
{
CHAR c;
if (Point) {
if (Point == End)
left(CSmove);
c = Line[Point - 1];
left(CSstay);
Line[Point - 1] = Line[Point];
TTYshow(Line[Point - 1]);
Line[Point++] = c;
TTYshow(c);
}
return CSstay;
}
static STATUS
quote(void)
{
unsigned int c;
return (c = TTYget()) == EOF ? CSeof : insert_char((int)c);
}
static STATUS
wipe(void)
{
int i;
if (Mark > End)
return ring_bell();
if (Point > Mark) {
i = Point;
Point = Mark;
Mark = i;
reposition();
}
return delete_string(Mark - Point);
}
static STATUS
mk_set(void)
{
Mark = Point;
return CSstay;
}
static STATUS
exchange(void)
{
unsigned int c;
if ((c = TTYget()) != CTL('X'))
return c == EOF ? CSeof : ring_bell();
if ((c = Mark) <= End) {
Mark = Point;
Point = c;
return CSmove;
}
return CSstay;
}
static STATUS
yank(void)
{
if (Yanked && *Yanked)
return insert_string(Yanked);
return CSstay;
}
static STATUS
copy_region(void)
{
if (Mark > End)
return ring_bell();
if (Point > Mark)
save_yank(Mark, Point - Mark);
else
save_yank(Point, Mark - Point);
return CSstay;
}
static STATUS
move_to_char(void)
{
unsigned int c;
int i;
CHAR *p;
if ((c = TTYget()) == EOF)
return CSeof;
for (i = Point + 1, p = &Line[i]; i < End; i++, p++)
if (*p == c) {
Point = i;
return CSmove;
}
return CSstay;
}
static STATUS
fd_word(void)
{
return do_forward(CSmove);
}
static STATUS
fd_kill_word(void)
{
int i;
(void)do_forward(CSstay);
if (OldPoint != Point) {
i = Point - OldPoint;
Point = OldPoint;
return delete_string(i);
}
return CSstay;
}
static STATUS
bk_word(void)
{
int i;
CHAR *p;
i = 0;
do {
for (p = &Line[Point]; p > Line && !isalnum(p[-1]); p--)
left(CSmove);
for (; p > Line && p[-1] != ' ' && isalnum(p[-1]); p--)
left(CSmove);
if (Point == 0)
break;
} while (++i < Repeat);
return CSstay;
}
static STATUS
bk_kill_word(void)
{
(void)bk_word();
if (OldPoint != Point)
return delete_string(OldPoint - Point);
return CSstay;
}
static int
argify(CHAR *line, CHAR ***avp)
{
CHAR *c;
CHAR **p;
CHAR **new;
int ac;
int i;
i = MEM_INC;
if ((*avp = p = NEW(CHAR*, i))== NULL)
return 0;
for (c = line; isspace(*c); c++)
continue;
if (*c == '\n' || *c == '\0')
return 0;
for (ac = 0, p[ac++] = c; *c && *c != '\n'; ) {
if (isspace(*c)) {
*c++ = '\0';
if (*c && *c != '\n') {
if (ac + 1 == i) {
new = NEW(CHAR*, i + MEM_INC);
if (new == NULL) {
p[ac] = NULL;
return ac;
}
COPYFROMTO(new, p, i * sizeof (char **));
i += MEM_INC;
DISPOSE(p);
*avp = p = new;
}
p[ac++] = c;
}
}
else
c++;
}
*c = '\0';
p[ac] = NULL;
return ac;
}
static STATUS
last_argument(void)
{
CHAR **av;
CHAR *p;
STATUS s;
int ac;
if (H.Size == 1 || (p = H.Lines[H.Size - 2]) == NULL)
return ring_bell();
if ((p = (CHAR *)DBG_strdup((char *)p)) == NULL)
return CSstay;
ac = argify(p, &av);
if (Repeat != NO_ARG)
s = Repeat < ac ? insert_string(av[Repeat]) : ring_bell();
else
s = ac ? insert_string(av[ac - 1]) : CSstay;
if (ac)
DISPOSE(av);
DISPOSE(p);
return s;
}
static KEYMAP Map[33] = {
{ CTL('@'), ring_bell },
{ CTL('A'), beg_line },
{ CTL('B'), bk_char },
{ CTL('D'), del_char },
{ CTL('E'), end_line },
{ CTL('F'), fd_char },
{ CTL('G'), ring_bell },
{ CTL('H'), bk_del_char },
{ CTL('I'), ring_bell },
{ CTL('J'), accept_line },
{ CTL('K'), kill_line },
{ CTL('L'), redisplay },
{ CTL('M'), accept_line },
{ CTL('N'), h_next },
{ CTL('O'), ring_bell },
{ CTL('P'), h_prev },
{ CTL('Q'), ring_bell },
{ CTL('R'), h_search },
{ CTL('S'), ring_bell },
{ CTL('T'), transpose },
{ CTL('U'), ring_bell },
{ CTL('V'), quote },
{ CTL('W'), wipe },
{ CTL('X'), exchange },
{ CTL('Y'), yank },
{ CTL('Z'), ring_bell },
{ CTL('['), meta },
{ CTL(']'), move_to_char },
{ CTL('^'), ring_bell },
{ CTL('_'), ring_bell },
{ 0, NULL }
};
static KEYMAP MetaMap[16]= {
{ CTL('H'), bk_kill_word },
{ DEL, bk_kill_word },
{ ' ', mk_set },
{ '.', last_argument },
{ '<', h_first },
{ '>', h_last },
{ '?', ring_bell },
{ 'b', bk_word },
{ 'd', fd_kill_word },
{ 'f', fd_word },
{ 'l', case_down_word },
{ 'u', case_up_word },
{ 'y', yank },
{ 'w', copy_region },
{ 0, NULL }
};