2010-02-27 20:19:06 +00:00
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/*
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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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2010-02-27 20:38:41 +00:00
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#define _GNU_SOURCE
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#include <stdio.h>
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2010-02-27 20:19:06 +00:00
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#include "dtc.h"
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#include "srcpos.h"
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2010-02-27 20:38:41 +00:00
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2010-02-27 20:19:06 +00:00
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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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2010-02-27 20:38:41 +00:00
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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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2010-02-27 20:19:06 +00:00
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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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2010-02-27 20:38:41 +00:00
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fullname = xstrdup(fname);
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2010-02-27 20:19:06 +00:00
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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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2010-02-27 20:38:41 +00:00
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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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2010-02-27 20:19:06 +00:00
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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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2010-02-27 20:38:41 +00:00
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file->name = xstrdup(fname);
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2010-02-27 20:19:06 +00:00
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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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2010-02-27 20:38:41 +00:00
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void
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dtc_close_file(struct dtc_file *file)
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2010-02-27 20:19:06 +00:00
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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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2010-02-27 20:38:41 +00:00
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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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2010-02-27 20:19:06 +00:00
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2010-02-27 20:38:41 +00:00
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va_end(va);
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2010-02-27 20:19:06 +00:00
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}
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