/* Copyright (C) 2002-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* tex 2 gif translator */
#include "texgif.h"
char *progname;
char *tmpdir="/tmp";
char *fontdir="/tmp";
char *headerfile="";
char *texstyle="";
char *outfile="/tmp/texgif.gif";
char cwd[1024];
double blacker=0.4;
int basedensity=100, density;
int compressratio=1;
int wrapexec=0;
int currentcolor;
FONT wfont[FONT_NUMBER_LIMIT];
int fontcnt;
enum {tt_plain, tt_latex};
int textype=tt_plain;
char *texname="tex";
#include "basic.c"
#include "colors.c"
#include "tfm.c"
#include "gf.c"
#include "font.c"
#include "image.c"
#include "dvi.c"
void checktextype(char *p)
{
if(strstr(p
,"\\begin{")!=NULL
||
strstr(p
,"\\underset")!=NULL
||
strstr(p
,"\\overset")!=NULL
) {
textype=tt_latex; texname="latex";
}
}
/* pass thru tex */
void tex(void)
{
char *src;
char *hd;
char fbuf[1024], nbuf[2048];
char *parmbuf[8];
FILE *f;
long int l;
if(src==NULL || *src==0) error("No source.");
checktextype(src);
snprintf(fbuf
,sizeof(fbuf
),"%s/texgif.tex",tmpdir
);
if(*headerfile) {
if(strstr(headerfile
,".tex")==NULL
)
snprintf(nbuf
,sizeof(nbuf
),"%s.%s",headerfile
,texname
);
else
snprintf(nbuf
,sizeof(nbuf
),"%s",headerfile
);
if(f!=NULL) {
if(l>0 && l<FILE_LENGTH_LIMIT) {
hd
=xmalloc
(l
+16); fread(hd
,1,l
,f
);
}
else {l=0; hd="";}
}
}
if(textype==tt_plain) {
fprintf(f
,"%s %s %s\n\\end\n",texstyle
, src
, texstyle
); fclose(f
);
}
else {
fprintf(f
,"{\\newpage\\clearpage\n\
%s %s %s\n\
\\clearpage}\n\
\\end{document}
\n"
,texstyle
, src
, texstyle
); fclose(f
);
}
chdir(tmpdir);
parmbuf[0]=texname; parmbuf[1]="texgif"; parmbuf[2]=NULL;
wrapexec=1;
execredirected(texname,NULL,NULL,NULL,parmbuf);
if(cwd[0]) chdir(cwd);
}
void parms(void)
{
char *p;
int t;
p
=getenv("tmp_dir"); if(p
!=NULL
&& *p
!=0) tmpdir
=p
;
p
=getenv("texgif_tmpdir"); if(p
!=NULL
&& *p
!=0) tmpdir
=p
;
p
=getenv("texgif_fontdir"); if(p
!=NULL
&& *p
!=0) fontdir
=p
;
p
=getenv("texgif_outfile"); if(p
!=NULL
&& *p
!=0) outfile
=p
;
p
=getenv("texgif_texheader"); if(p
!=NULL
&& *p
!=0) headerfile
=p
;
p
=getenv("texgif_style"); if(p
!=NULL
&& *p
!=0) texstyle
=p
;
p
=getenv("texgif_density"); if(p
!=NULL
&& *p
!=0) {
t
=atoi(p
); if(t
>10 && t
<1000) basedensity
=t
;
}
p
=getenv("texgif_compressratio"); if(p
!=NULL
&& *p
!=0) {
t
=atoi(p
); if(t
>1 && t
<=5) compressratio
=t
;
}
if(getcwd(cwd,sizeof(cwd))==NULL) cwd[0]=0;
}
int main(int argc, char *argv[])
{
progname=argv[0];
parms();
fontcnt=0;
tex();
setreuid(geteuid(),geteuid());setregid(getegid(),getegid());
dvi();
return 0;
}