106 lines
2.3 KiB
C
106 lines
2.3 KiB
C
|
/*
|
||
|
|
* Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
|
||
|
|
*
|
||
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
||
|
|
* USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "dtc.h"
|
||
|
|
#include "srcpos.h"
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Record the complete unique set of opened file names.
|
||
|
|
* Primarily used to cache source position file names.
|
||
|
|
*/
|
||
|
|
#define MAX_N_FILE_NAMES (100)
|
||
|
|
|
||
|
|
const char *file_names[MAX_N_FILE_NAMES];
|
||
|
|
static int n_file_names = 0;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Like yylineno, this is the current open file pos.
|
||
|
|
*/
|
||
|
|
|
||
|
|
int srcpos_filenum = -1;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
FILE *dtc_open_file(const char *fname)
|
||
|
|
{
|
||
|
|
FILE *f;
|
||
|
|
|
||
|
|
if (lookup_file_name(fname, 1) < 0)
|
||
|
|
die("Too many files opened\n");
|
||
|
|
|
||
|
|
if (streq(fname, "-"))
|
||
|
|
f = stdin;
|
||
|
|
else
|
||
|
|
f = fopen(fname, "r");
|
||
|
|
|
||
|
|
if (! f)
|
||
|
|
die("Couldn't open \"%s\": %s\n", fname, strerror(errno));
|
||
|
|
|
||
|
|
return f;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Locate and optionally add filename fname in the file_names[] array.
|
||
|
|
*
|
||
|
|
* If the filename is currently not in the array and the boolean
|
||
|
|
* add_it is non-zero, an attempt to add the filename will be made.
|
||
|
|
*
|
||
|
|
* Returns;
|
||
|
|
* Index [0..MAX_N_FILE_NAMES) where the filename is kept
|
||
|
|
* -1 if the name can not be recorded
|
||
|
|
*/
|
||
|
|
|
||
|
|
int lookup_file_name(const char *fname, int add_it)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < n_file_names; i++) {
|
||
|
|
if (strcmp(file_names[i], fname) == 0)
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (add_it) {
|
||
|
|
if (n_file_names < MAX_N_FILE_NAMES) {
|
||
|
|
file_names[n_file_names] = strdup(fname);
|
||
|
|
return n_file_names++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
const char *srcpos_filename_for_num(int filenum)
|
||
|
|
{
|
||
|
|
if (0 <= filenum && filenum < n_file_names) {
|
||
|
|
return file_names[filenum];
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
const char *srcpos_get_filename(void)
|
||
|
|
{
|
||
|
|
return srcpos_filename_for_num(srcpos_filenum);
|
||
|
|
}
|