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240 lines
4.6 KiB
240 lines
4.6 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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#define _GNU_SOURCE |
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#include <stdio.h> |
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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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/* |
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* The empty source position. |
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*/ |
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struct dtc_file dtc_empty_file = { |
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.dir = NULL, |
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.name = "<no file>", |
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.file = NULL |
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}; |
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srcpos srcpos_empty = { |
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.first_line = 0, |
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.first_column = 0, |
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.last_line = 0, |
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.last_column = 0, |
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.file = &dtc_empty_file |
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}; |
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static int |
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dtc_open_one(struct dtc_file *file, const char *search, 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 = xstrdup(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 * |
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dtc_open_file(const char *fname, 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 = xstrdup(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 |
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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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} |
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srcpos * |
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srcpos_copy(srcpos *pos) |
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{ |
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srcpos *pos_new; |
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pos_new = xmalloc(sizeof(srcpos)); |
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memcpy(pos_new, pos, sizeof(srcpos)); |
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return pos_new; |
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} |
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void |
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srcpos_dump(srcpos *pos) |
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{ |
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printf("file : \"%s\"\n", |
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pos->file ? (char *) pos->file : "<no file>"); |
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printf("first_line : %d\n", pos->first_line); |
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printf("first_column: %d\n", pos->first_column); |
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printf("last_line : %d\n", pos->last_line); |
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printf("last_column : %d\n", pos->last_column); |
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printf("file : %s\n", pos->file->name); |
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} |
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char * |
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srcpos_string(srcpos *pos) |
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{ |
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const char *fname; |
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char col_buf[100]; |
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char *pos_str; |
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if (!pos) { |
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fname = "<no-file>"; |
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} else if (pos->file->name) { |
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fname = pos->file->name; |
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if (strcmp(fname, "-") == 0) |
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fname = "stdin"; |
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} else { |
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fname = "<no-file>"; |
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} |
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if (pos->first_line == pos->last_line) { |
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if (pos->first_column == pos->last_column) { |
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snprintf(col_buf, sizeof(col_buf), |
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"%d:%d", |
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pos->first_line, pos->first_column); |
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} else { |
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snprintf(col_buf, sizeof(col_buf), |
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"%d:%d-%d", |
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pos->first_line, |
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pos->first_column, pos->last_column); |
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} |
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} else { |
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snprintf(col_buf, sizeof(col_buf), |
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"%d:%d - %d:%d", |
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pos->first_line, pos->first_column, |
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pos->last_line, pos->last_column); |
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} |
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if (asprintf(&pos_str, "%s %s", fname, col_buf) == -1) |
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return "<unknown source position?"; |
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return pos_str; |
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} |
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void |
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srcpos_error(srcpos *pos, char const *fmt, ...) |
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{ |
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const char *srcstr; |
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va_list va; |
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va_start(va, fmt); |
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srcstr = srcpos_string(pos); |
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fprintf(stderr, "Error: %s ", srcstr); |
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vfprintf(stderr, fmt, va); |
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fprintf(stderr, "\n"); |
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va_end(va); |
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} |
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void |
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srcpos_warn(srcpos *pos, char const *fmt, ...) |
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{ |
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const char *srcstr; |
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va_list va; |
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va_start(va, fmt); |
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srcstr = srcpos_string(pos); |
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fprintf(stderr, "Warning: %s ", srcstr); |
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vfprintf(stderr, fmt, va); |
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fprintf(stderr, "\n"); |
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va_end(va); |
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}
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