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116 lines
2.6 KiB
116 lines
2.6 KiB
/* |
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* Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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*/ |
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#include "dtc.h" |
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#include "srcpos.h" |
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/* |
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* Like yylineno, this is the current open file pos. |
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*/ |
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struct dtc_file *srcpos_file; |
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static int dtc_open_one(struct dtc_file *file, |
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const char *search, |
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const char *fname) |
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{ |
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char *fullname; |
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if (search) { |
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fullname = xmalloc(strlen(search) + strlen(fname) + 2); |
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strcpy(fullname, search); |
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strcat(fullname, "/"); |
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strcat(fullname, fname); |
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} else { |
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fullname = strdup(fname); |
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} |
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file->file = fopen(fullname, "r"); |
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if (!file->file) { |
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free(fullname); |
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return 0; |
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} |
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file->name = fullname; |
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return 1; |
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} |
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struct dtc_file *dtc_open_file(const char *fname, |
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const struct search_path *search) |
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{ |
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static const struct search_path default_search = { NULL, NULL, NULL }; |
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struct dtc_file *file; |
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const char *slash; |
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file = xmalloc(sizeof(struct dtc_file)); |
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slash = strrchr(fname, '/'); |
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if (slash) { |
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char *dir = xmalloc(slash - fname + 1); |
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memcpy(dir, fname, slash - fname); |
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dir[slash - fname] = 0; |
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file->dir = dir; |
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} else { |
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file->dir = NULL; |
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} |
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if (streq(fname, "-")) { |
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file->name = "stdin"; |
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file->file = stdin; |
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return file; |
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} |
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if (fname[0] == '/') { |
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file->file = fopen(fname, "r"); |
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if (!file->file) |
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goto fail; |
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file->name = strdup(fname); |
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return file; |
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} |
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if (!search) |
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search = &default_search; |
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while (search) { |
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if (dtc_open_one(file, search->dir, fname)) |
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return file; |
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if (errno != ENOENT) |
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goto fail; |
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search = search->next; |
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} |
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fail: |
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die("Couldn't open \"%s\": %s\n", fname, strerror(errno)); |
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} |
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void dtc_close_file(struct dtc_file *file) |
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{ |
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if (fclose(file->file)) |
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die("Error closing \"%s\": %s\n", file->name, strerror(errno)); |
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free(file->dir); |
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free(file); |
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}
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