diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-06-07 12:22:15 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-06-07 12:22:15 +0200 |
commit | 5f4457a4f62cc9d78e04c0eb12ff0540899aad89 (patch) | |
tree | 0b973d527ea6b2ae31e08da0746b4965a3c5a6d8 /scripts/dtc/srcpos.c | |
parent | 9b94b3a19b13e094c10f65f24bc358f6ffe4eacd (diff) | |
parent | b87297fb405ef13cac375f202d114323b076a56d (diff) |
Merge branch 'linus' into x86/cpu
Diffstat (limited to 'scripts/dtc/srcpos.c')
-rw-r--r-- | scripts/dtc/srcpos.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/scripts/dtc/srcpos.c b/scripts/dtc/srcpos.c new file mode 100644 index 00000000000..9641b7628b4 --- /dev/null +++ b/scripts/dtc/srcpos.c @@ -0,0 +1,116 @@ +/* + * 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" + +/* + * Like yylineno, this is the current open file pos. + */ + +struct dtc_file *srcpos_file; + +static int dtc_open_one(struct dtc_file *file, + const char *search, + const char *fname) +{ + char *fullname; + + if (search) { + fullname = xmalloc(strlen(search) + strlen(fname) + 2); + + strcpy(fullname, search); + strcat(fullname, "/"); + strcat(fullname, fname); + } else { + fullname = strdup(fname); + } + + file->file = fopen(fullname, "r"); + if (!file->file) { + free(fullname); + return 0; + } + + file->name = fullname; + return 1; +} + + +struct dtc_file *dtc_open_file(const char *fname, + const struct search_path *search) +{ + static const struct search_path default_search = { NULL, NULL, NULL }; + + struct dtc_file *file; + const char *slash; + + file = xmalloc(sizeof(struct dtc_file)); + + slash = strrchr(fname, '/'); + if (slash) { + char *dir = xmalloc(slash - fname + 1); + + memcpy(dir, fname, slash - fname); + dir[slash - fname] = 0; + file->dir = dir; + } else { + file->dir = NULL; + } + + if (streq(fname, "-")) { + file->name = "stdin"; + file->file = stdin; + return file; + } + + if (fname[0] == '/') { + file->file = fopen(fname, "r"); + if (!file->file) + goto fail; + + file->name = strdup(fname); + return file; + } + + if (!search) + search = &default_search; + + while (search) { + if (dtc_open_one(file, search->dir, fname)) + return file; + + if (errno != ENOENT) + goto fail; + + search = search->next; + } + +fail: + die("Couldn't open \"%s\": %s\n", fname, strerror(errno)); +} + +void dtc_close_file(struct dtc_file *file) +{ + if (fclose(file->file)) + die("Error closing \"%s\": %s\n", file->name, strerror(errno)); + + free(file->dir); + free(file); +} |