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/*
* Purpose: Simple replacement for cpp -M (gcc)
*/
/*
*
* This file is part of Open Sound System.
*
* Copyright (C) 4Front Technologies 1996-2008.
*
* This this source file is released under GPL v2 license (no other versions).
* See the COPYING file included in the main directory of this source
* distribution for the license terms and conditions.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
int ndirs = 0;
char *dirs[1024];
int ndupes = 0;
char *dupes[4096];
static void
add_includedir (char *d)
{
dirs[ndirs++] = d;
}
static int
dupe_file (char *name)
{
int i;
for (i = 0; i < ndupes; i++)
if (strcmp (dupes[i], name) == 0)
return 1;
dupes[ndupes++] = strdup (name);
return 0;
}
static void parse_f (FILE * f, char *pathname);
static void
do_global_include (char *hdrname, char *pathname)
{
FILE *f;
int i;
char tmp[512];
sprintf (tmp, "%s/%s", pathname, hdrname);
if (dupe_file (tmp))
return;
if ((f = fopen (tmp, "r")) != NULL)
{
printf ("%s ", tmp);
parse_f (f, pathname);
fclose (f);
return;
}
for (i = 0; i < ndirs; i++)
{
sprintf (tmp, "%s/%s", dirs[i], hdrname);
if (dupe_file (tmp))
return;
if ((f = fopen (tmp, "r")) == NULL)
continue;
printf ("\\\n %s ", tmp);
parse_f (f, dirs[i]);
fclose (f);
return;
}
fprintf (stderr, "Cannot locate <%s>\n", hdrname);
printf ("\n");
exit (-1);
}
static void
do_local_include (char *hdrname, char *pathname)
{
FILE *f;
char tmp[512];
sprintf (tmp, "%s/%s", pathname, hdrname);
if (dupe_file (tmp))
{
return;
}
if ((f = fopen (tmp, "r")) == NULL)
{
#if 1
do_global_include (hdrname, pathname);
return;
#else
perror (tmp);
printf ("\n");
exit (-1);
#endif
}
sprintf (tmp, "%s ", tmp);
parse_f (f, pathname);
printf ("\\\n %s ", tmp);
fclose (f);
}
static void
parse_f (FILE * f, char *pathname)
{
char line[1024], *p, *s;
while (fgets (line, sizeof (line), f) != NULL)
{
if (*line != '#')
continue;
s = line + 1;
/* Skip space */
while (*s && (*s == ' ' || *s == '\t'))
s++;
/* Extract the preprocessor directive name (p) */
p = s;
while (*s && (*s != ' ' && *s != '\t'))
s++;
*s++ = 0;
if (strcmp (p, "include") != 0)
continue;
/* Skip space */
while (*s && (*s == ' ' || *s == '\t'))
s++;
if (*s == '"')
{
s++;
p = s;
while (*s && *s != '"')
s++;
*s = 0;
do_local_include (p, pathname);
continue;
}
if (*s == '<')
{
s++;
p = s;
while (*s && *s != '>')
s++;
*s = 0;
do_global_include (p, pathname);
continue;
}
}
}
static void
parse_sourcefile (char *srcname)
{
FILE *f;
char *s, *p;
char origname[64];
strcpy (origname, srcname);
s = NULL;
p = srcname;
while (*p)
{
if (*p == '.')
s = p;
p++;
}
if (*s != '.')
{
fprintf (stderr, "Bad file name %s\n", srcname);
printf ("\n");
exit (-1);
}
if ((f = fopen (srcname, "r")) == NULL)
{
perror (srcname);
printf ("\n");
exit (-1);
}
*s++ = 0;
printf ("%s.o: %s ", srcname, origname);
parse_f (f, ".");
printf ("\n");
fclose (f);
}
int
main (int argc, char *argv[])
{
int i;
add_includedir ("/usr/include");
add_includedir ("/usr/local/include");
for (i = 1; i < argc; i++)
if (argv[i][0] == '-')
switch (argv[i][1])
{
case 'I':
add_includedir (argv[i] + 2);
break;
}
else
parse_sourcefile (argv[i]);
exit (0);
}
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