firewire: core: fix card->reset_jiffies overflow
[firewire-audio.git] / scripts / dtc / srcpos.c
blob9641b7628b4de60b8d476f5329334b6dc6a10144
1 /*
2 * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
17 * USA
20 #include "dtc.h"
21 #include "srcpos.h"
24 * Like yylineno, this is the current open file pos.
27 struct dtc_file *srcpos_file;
29 static int dtc_open_one(struct dtc_file *file,
30 const char *search,
31 const char *fname)
33 char *fullname;
35 if (search) {
36 fullname = xmalloc(strlen(search) + strlen(fname) + 2);
38 strcpy(fullname, search);
39 strcat(fullname, "/");
40 strcat(fullname, fname);
41 } else {
42 fullname = strdup(fname);
45 file->file = fopen(fullname, "r");
46 if (!file->file) {
47 free(fullname);
48 return 0;
51 file->name = fullname;
52 return 1;
56 struct dtc_file *dtc_open_file(const char *fname,
57 const struct search_path *search)
59 static const struct search_path default_search = { NULL, NULL, NULL };
61 struct dtc_file *file;
62 const char *slash;
64 file = xmalloc(sizeof(struct dtc_file));
66 slash = strrchr(fname, '/');
67 if (slash) {
68 char *dir = xmalloc(slash - fname + 1);
70 memcpy(dir, fname, slash - fname);
71 dir[slash - fname] = 0;
72 file->dir = dir;
73 } else {
74 file->dir = NULL;
77 if (streq(fname, "-")) {
78 file->name = "stdin";
79 file->file = stdin;
80 return file;
83 if (fname[0] == '/') {
84 file->file = fopen(fname, "r");
85 if (!file->file)
86 goto fail;
88 file->name = strdup(fname);
89 return file;
92 if (!search)
93 search = &default_search;
95 while (search) {
96 if (dtc_open_one(file, search->dir, fname))
97 return file;
99 if (errno != ENOENT)
100 goto fail;
102 search = search->next;
105 fail:
106 die("Couldn't open \"%s\": %s\n", fname, strerror(errno));
109 void dtc_close_file(struct dtc_file *file)
111 if (fclose(file->file))
112 die("Error closing \"%s\": %s\n", file->name, strerror(errno));
114 free(file->dir);
115 free(file);