mirror of
https://invent.kde.org/graphics/okular
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187 lines
5.1 KiB
C
187 lines
5.1 KiB
C
/*
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* Copyright (c) 1994 Paul Vojta. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* NOTE:
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* This routine is adapted from the squeeze.c that comes with dvips;
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* it bears the message:
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* This software is Copyright 1988 by Radical Eye Software.
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* Used with permission.
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*/
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/*
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* This routine squeezes a PostScript file down to its
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* minimum. We parse and then output it.
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* Adapted for xdvi 1/94. Writes a C program that contains the PS file
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* as a constant string.
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*/
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#include <stdio.h>
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#include <string.h>
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#define LINELENGTH (72)
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#define BUFLENGTH (1000)
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#undef putchar
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#define putchar(a) (void)putc(a, out) ;
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FILE *in, *out ;
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static int linepos = 0 ;
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static int lastspecial = 1 ;
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static int stringlen = 0;
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/*
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* This next routine writes out a `special' character. In this case,
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* we simply put it out, since any special character terminates the
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* preceding token.
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*/
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void specialout(c)
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char c ;
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{
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if (linepos + 1 > LINELENGTH) {
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(void)fputs("\\n\\\n", out);
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stringlen += linepos + 1;
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linepos = 0 ;
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}
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putchar(c) ;
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linepos++ ;
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lastspecial = 1 ;
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}
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void strout(s)
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char *s ;
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{
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if (linepos + strlen(s) > LINELENGTH) {
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(void)fputs("\\n\\\n", out);
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stringlen += linepos + 1;
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linepos = 0 ;
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}
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linepos += strlen(s) ;
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while (*s != 0)
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putchar(*s++) ;
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lastspecial = 1 ;
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}
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void cmdout(s)
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char *s ;
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{
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int l ;
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l = strlen(s) ;
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if (linepos + l + 1 > LINELENGTH) {
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(void)fputs("\\n\\\n", out);
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stringlen += linepos + 1;
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linepos = 0 ;
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lastspecial = 1 ;
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}
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if (! lastspecial) {
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putchar(' ') ;
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linepos++ ;
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}
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while (*s != 0) {
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putchar(*s++) ;
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}
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linepos += l ;
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lastspecial = 0 ;
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}
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char buf[BUFLENGTH] ;
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int main(int argc, char *argv[])
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{
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int c ;
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char *b ;
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char seeking ;
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extern void exit() ;
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if (argc > 3 || (in=(argc < 2 ? stdin : fopen(argv[1], "r")))==NULL ||
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(out=(argc < 3 ? stdout : fopen(argv[2], "w")))==NULL) {
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(void)fprintf(stderr, "Usage: squeeze [infile [outfile]]\n") ;
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exit(1) ;
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}
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(void)fputs("/*\n\
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* DO NOT EDIT THIS FILE!\n\
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* It was created by squeeze.c from another file (see the Makefile).\n\
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*/\n\n\
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#ifndef _Xconst\n\
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#if __STDC__\n\
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#define _Xconst const\n\
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#else\n\
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#define _Xconst\n\
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#endif\n\
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#endif\n\n\
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_Xconst char psheader[] = \"\\\n", out);
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while (1) {
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c = getc(in) ;
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if (c==EOF)
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break ;
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if (c=='%') {
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while ((c=getc(in))!='\n') ;
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}
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if (c <= ' ')
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continue ;
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switch (c) {
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case '{' :
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case '}' :
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case '[' :
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case ']' :
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specialout(c) ;
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break ;
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case '<' :
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case '(' :
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if (c=='(')
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seeking = ')' ;
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else
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seeking = '>' ;
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b = buf ;
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*b++ = c ;
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do {
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c = getc(in) ;
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if (b > buf + BUFLENGTH-2) {
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(void)fprintf(stderr, "Overran buffer seeking %c", seeking) ;
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exit(1) ;
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}
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*b++ = c ;
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if (c=='\\')
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*b++ = getc(in) ;
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} while (c != seeking) ;
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*b++ = 0 ;
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strout(buf) ;
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break ;
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default:
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b = buf ;
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while ((c>='A'&&c<='Z')||(c>='a'&&c<='z')||
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(c>='0'&&c<='9')||(c=='/')||(c=='@')||
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(c=='!')||(c=='"')||(c=='&')||(c=='*')||(c==':')||
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(c==',')||(c==';')||(c=='?')||(c=='^')||(c=='~')||
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(c=='-')||(c=='.')||(c=='#')||(c=='|')||(c=='_')||
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(c=='=')||(c=='$')||(c=='+')) {
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*b++ = c ;
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c = getc(in) ;
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}
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if (b == buf) {
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(void)fprintf(stderr, "Oops! Missed a case: %c.\n", c) ;
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exit(1) ;
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}
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*b++ = 0 ;
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(void)ungetc(c, in) ;
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cmdout(buf) ;
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}
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}
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(void)fprintf(out, "\\n\";\n\n\
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int\tpsheaderlen\t= %d;\n", stringlen + linepos + 1);
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return (0) ;
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/*NOTREACHED*/
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}
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