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/*************************************************************************\
*
* Package: MyLib
* File: tcode.c
* Environment: ANSI C
*
* Copyright (c) 2002 Pierre L'Ecuyer, DIRO, Université de Montréal.
* e-mail: lecuyer@iro.umontreal.ca
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted without a fee for private, research,
* academic, or other non-commercial purposes.
* Any use of this software in a commercial environment requires a
* written licence from the copyright owner.
*
* Any changes made to this package must be clearly identified as such.
*
* In scientific publications which used this software, a reference to it
* would be appreciated.
*
* Redistributions of source code must retain this copyright notice
* and the following disclaimer.
*
* THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
\*************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>
/*========================== constants =================================*/
#define MaxChar 255 /* max. length of a line */
#define Mess1 "\nUsage: tcode <FileIn> <FileOut>\n\n"
#define Mess2 "\nERROR: The 2 files must be different\n\n"
/*============================= variables ==============================*/
static char Line[MaxChar + 1] = {0}, /* One line of input */
FIn[MaxChar + 1] = {0}, /* Input file name */
FOut[MaxChar + 1] = {0}; /* Output file name */
static FILE *fin, /* Input file */
*fout; /* Output file */
static size_t L1, L2, L3, L4, L5, L6, L7, L8; /* Lengths of strings */
/**************************************************************************/
static void Init (int argc, char *argv[])
{
if (argc != 3) {
printf (Mess1);
exit (EXIT_FAILURE);
}
sprintf (FIn, "%.*s", MaxChar, argv[1]);
sprintf (FOut, "%.*s", MaxChar, argv[2]);
if (!strcmp (FIn, FOut)) {
printf (Mess2);
exit (EXIT_FAILURE);
}
errno = 0;
fin = fopen (FIn, "r");
if (fin == NULL) {
printf ("\nOpening of %s failed: %s\n\n", FIn, strerror (errno));
exit (EXIT_FAILURE);
}
errno = 0;
fout = fopen (FOut, "w");
if (fout == NULL) {
printf ("\nOpening of %s failed: %s\n\n", FOut, strerror (errno));
exit (EXIT_FAILURE);
}
L1 = strlen ("\\code");
L2 = strlen ("\\endcode");
L3 = strlen ("\\hide");
L4 = strlen ("\\endhide");
L5 = strlen ("\\iffalse");
L6 = strlen ("\\fi");
L7 = strlen ("\\smallc");
L8 = strlen ("\\smallcode");
}
/**************************************************************************/
static void SearchRep (char *A, const char *sub, unsigned int L)
{
/* Search for TEX command sub, of length L, in line A */
char *p, *q;
p = strstr (A, sub); /* search for sub in A */
if (p) { /* if found */
if (isalpha ((int) *(p + L))) /* is it only part of a command? */
SearchRep (A + L, sub, L); /* yes? search rest of line */
else {
q = p + L; /* no? delete */
*p++ = ' ';
while ((*p++ = *q++))
;
}
}
}
/**************************************************************************/
static void ProcessCode (char *A)
{
SearchRep (A, "\\hide", L3);
SearchRep (A, "\\endhide", L4);
SearchRep (A, "\\iffalse", L5);
SearchRep (A, "\\fi", L6);
SearchRep (A, "\\smallcode", L8);
SearchRep (A, "\\smallc", L7);
fprintf (fout, "%s", A);
}
/**************************************************************************/
static int ProcessLine (char *line)
{
/* Process a line (or part of a line) of valid code. If at the end of the
line, we are still in a region of valid code, then return 1; otherwise,
return 0. */
char *p, *rest;
int code;
p = strstr (line, "\\endcode"); /* search for "\endcode" */
if (p) { /* if found */
*p = '\0'; /* code ends here */
rest = p + L2; /* step over "\endcode" */
p = strstr (rest, "\\code"); /* search for "\code" */
if (p) {
p += L1; /* step over "\code" */
rest = calloc (MaxChar, sizeof (char));
strncpy (rest, p, MaxChar);
ProcessCode (line);
code = ProcessLine (rest);
free (rest);
return code;
} else {
ProcessCode (line);
return 0;
}
} else {
ProcessCode (line);
return 1;
}
}
/**************************************************************************/
int main (int argc, char *argv[])
{
char *p, *q;
int isCode = 0; /* If isCode == TRUE, we are in a region of
valid code; otherwise not. */
Init (argc, argv);
while (NULL != fgets (Line, MaxChar, fin)) { /* Not EOF and no error */
if (isCode) {
isCode = ProcessLine (Line);
} else {
/* search for "\def\code" and drop that line: it is not valid code
but the definition of the TEX command \code */
if (strstr (Line, "\\def\\code"))
;
else if ((p = strstr (Line, "\\code"))) {
/* search for "\code". If "\code" is found on a line with a %
before it, then it is a TEX comment and we do not consider
it as starting a region of valid code; */
*p = '\0';
q = strchr (Line, '%');
if (NULL == q)
/* otherwise, it is valid code: process rest of line */
isCode = ProcessLine (p + L1);
}
}
}
fprintf (fout, "\n");
fclose (fout);
fclose (fin);
return 0;
}
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