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/*
* Filter a LaTeX file into an lgrind file. Convert
* \begin{verbatim}-\end{verbatim} pairs into %[ - %] pairs. Tabify
* the former verbatim environments. Convert \verb|stuff| into @stuff@.
*/
#ifndef lint
static char sccsid[] = "@(#)v2lg.c 1.1 20/3/85";
static char rcsid[] =
"$Id: v2lg.c,v 1.2 1999/05/25 17:01:36 mike Exp $";
#endif
#include <stdio.h>
#include <string.h>
#define FALSE 0
#define TRUE 1
#define STREQ(s,t) ((*(s) == *(t)) && (!*(s) || !strcmp((s),(t))))
int main(int argc, char **argv)
{
int in_verbatim = FALSE, col, start_col;
char in[256], out[256], *ic, *oc, *verb, delim;
while (fgets(in, sizeof(in), stdin) != NULL) {
if (in_verbatim) {
if (STREQ(in, "\\end{verbatim}\n")) {
fputs("%]\n", stdout);
in_verbatim = FALSE;
continue;
}
for (col = 0, ic = in, oc = out; *ic != '\n'; ) {
if (*ic != ' ' && *ic != '\t') {
*oc++ = *ic++; col++;
} else { /* \t == ' ' in a verbatim environment */
start_col = col;
while (*ic == ' ' || *ic == '\t') {
if (((++col) & 7) == 0) {
*oc++ = '\t'; start_col = col;
}
ic++;
}
if ((col & 7) != 0)
for ( ; start_col < col; start_col++)
*oc++ = ' ';
}
}
*oc++ = '\n'; *oc++ = '\0';
fputs(out, stdout);
continue;
}
if (STREQ(in, "\\begin{verbatim}\n")) {
fputs("%[\n", stdout);
in_verbatim = TRUE;
continue;
}
for (ic = in; (verb = strstr(ic, "\\verb")) != NULL; ) {
for ( ; ic < verb; ic++)
putchar(*ic);
ic += 5; /* Skip over \verb */
if (*ic == '*') /* \verb* => funny-looking spaces */
ic++;
delim = *ic++; /* the delimiter char */
putchar('@');
while (*ic != delim) {
putchar(*ic); ic++;
}
ic++; /* Skip the other delimiter */
putchar('@');
}
fputs(ic, stdout);
}
return 0;
}
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