mirror of
https://sourceware.org/git/binutils-gdb.git
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345 lines
7.6 KiB
C
345 lines
7.6 KiB
C
/* This file is part of the program psim.
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Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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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
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GNU General Public License for more details.
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include "build-config.h"
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#include "misc.h"
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#include "lf.h"
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#include "table.h"
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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typedef struct _open_table open_table;
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struct _open_table {
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size_t size;
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char *buffer;
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char *pos;
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int line_nr;
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int nr_fields;
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int nr_model_fields;
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char *file_name;
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open_table *parent;
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table *root;
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};
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struct _table {
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open_table *current;
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};
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void
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table_push (table *root,
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table_include *includes,
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const char *file_name,
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int nr_fields,
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int nr_model_fields)
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{
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int fd;
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struct stat stat_buf;
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open_table *file;
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table_include dummy;
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table_include *include = &dummy;
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int nr;
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/* dummy up a search of this directory */
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dummy.next = includes;
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dummy.dir = "";
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/* create a file descriptor */
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file = ZALLOC (open_table);
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ASSERT(file != NULL);
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file->nr_fields = nr_fields;
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file->nr_model_fields = nr_model_fields;
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file->root = root;
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file->parent = root->current;
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root->current = file;
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while (1)
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{
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/* save the file name */
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char *dup_name = NZALLOC (char, strlen (include->dir) + strlen (file_name) + 2);
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if (dup_name == NULL)
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{
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perror (file_name);
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exit (1);
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}
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if (include->dir[0] != '\0')
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{
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strcat (dup_name, include->dir);
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strcat (dup_name, "/");
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}
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strcat (dup_name, file_name);
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file->file_name = dup_name;
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/* open the file */
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fd = open (dup_name, O_RDONLY, 0);
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if (fd >= 0)
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break;
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/* free (dup_name); */
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if (include->next == NULL)
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{
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error ("Problem opening file `%s'\n", file_name);
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perror (file_name);
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exit (1);
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}
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include = include->next;
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}
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/* determine the size */
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if (fstat(fd, &stat_buf) < 0) {
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perror("table_open.fstat");
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exit(1);
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}
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file->size = stat_buf.st_size;
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/* allocate this much memory */
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file->buffer = (char*)zalloc(file->size+1);
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if(file->buffer == NULL) {
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perror("table_open.calloc.file->size+1");
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exit(1);
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}
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file->pos = file->buffer;
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/* read it in */
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#ifdef __CYGWIN32__
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if ((file->size) && ((nr = read(fd, file->buffer, file->size)) <= 0)) {
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#else
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if ((nr = read(fd, file->buffer, file->size)) < file->size) {
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#endif
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perror("table_open.read");
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exit(1);
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}
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file->size = nr;
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file->buffer[file->size] = '\0';
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/* done */
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close(fd);
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}
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extern table *
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table_open(const char *file_name,
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int nr_fields,
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int nr_model_fields)
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{
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table *root;
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/* create a file descriptor */
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root = ZALLOC (table);
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if (root == NULL)
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{
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perror (file_name);
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exit (1);
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}
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table_push (root, NULL, file_name, nr_fields, nr_model_fields);
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return root;
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}
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extern table_entry *
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table_entry_read(table *root)
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{
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open_table *file = root->current;
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int field;
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table_entry *entry;
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/* skip comments/blanks */
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while(1) {
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/* end-of-file? */
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while (*file->pos == '\0')
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{
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if (file->parent != NULL)
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{
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file = file->parent;
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root->current = file;
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}
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else
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return NULL;
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}
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/* leading white space */
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while (*file->pos != '\0'
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&& *file->pos != '\n'
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&& isspace(*file->pos))
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file->pos++;
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/* comment */
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if (*file->pos == '#') {
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do {
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file->pos++;
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} while (*file->pos != '\0' && *file->pos != '\n');
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}
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/* end of line? */
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if (*file->pos == '\n') {
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file->pos++;
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file->line_nr++;
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}
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else
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break;
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}
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/* create this new entry */
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entry = (table_entry*)zalloc(sizeof(table_entry)
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+ (file->nr_fields + 1) * sizeof(char*));
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ASSERT(entry != NULL);
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entry->file_name = file->file_name;
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entry->nr_fields = file->nr_fields;
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/* break the line into its colon delimitered fields */
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for (field = 0; field < file->nr_fields-1; field++) {
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entry->fields[field] = file->pos;
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while(*file->pos && *file->pos != ':' && *file->pos != '\n')
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file->pos++;
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if (*file->pos == ':') {
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*file->pos = '\0';
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file->pos++;
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}
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}
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/* any trailing stuff not the last field */
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ASSERT(field == file->nr_fields-1);
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entry->fields[field] = file->pos;
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while (*file->pos && *file->pos != '\n') {
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file->pos++;
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}
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if (*file->pos == '\n') {
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*file->pos = '\0';
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file->pos++;
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}
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file->line_nr++;
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/* if following lines begin with a star, add them to the model
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section. */
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while ((file->nr_model_fields > 0) && (*file->pos == '*')) {
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table_model_entry *model = (table_model_entry*)zalloc(sizeof(table_model_entry)
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+ (file->nr_model_fields + 1) * sizeof(char*));
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if (entry->model_last)
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entry->model_last->next = model;
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else
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entry->model_first = model;
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entry->model_last = model;
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/* break the line into its colon delimitered fields */
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file->pos++;
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for (field = 0; field < file->nr_model_fields-1; field++) {
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model->fields[field] = file->pos;
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while(*file->pos && *file->pos != ':' && *file->pos != '\n')
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file->pos++;
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if (*file->pos == ':') {
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*file->pos = '\0';
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file->pos++;
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}
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}
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/* any trailing stuff not the last field */
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ASSERT(field == file->nr_model_fields-1);
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model->fields[field] = file->pos;
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while (*file->pos && *file->pos != '\n') {
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file->pos++;
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}
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if (*file->pos == '\n') {
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*file->pos = '\0';
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file->pos++;
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}
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file->line_nr++;
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model->line_nr = file->line_nr;
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}
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entry->line_nr = file->line_nr;
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/* if following lines are tab indented, put in the annex */
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if (*file->pos == '\t') {
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entry->annex = file->pos;
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do {
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do {
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file->pos++;
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} while (*file->pos != '\0' && *file->pos != '\n');
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if (*file->pos == '\n') {
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char *save_pos = ++file->pos;
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int extra_lines = 0;
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file->line_nr++;
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/* Allow tab indented to have blank lines */
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while (*save_pos == '\n') {
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save_pos++;
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extra_lines++;
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}
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if (*save_pos == '\t') {
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file->pos = save_pos;
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file->line_nr += extra_lines;
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}
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}
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} while (*file->pos != '\0' && *file->pos == '\t');
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if (file->pos[-1] == '\n')
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file->pos[-1] = '\0';
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}
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else
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entry->annex = NULL;
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/* return it */
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return entry;
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}
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extern void
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dump_table_entry(table_entry *entry,
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int indent)
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{
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printf("(table_entry*)%p\n", entry);
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if (entry != NULL) {
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int field;
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char sep;
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sep = ' ';
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dumpf(indent, "(fields");
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for (field = 0; field < entry->nr_fields; field++) {
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printf("%c%s", sep, entry->fields[field]);
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sep = ':';
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}
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printf(")\n");
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dumpf(indent, "(line_nr %d)\n", entry->line_nr);
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dumpf(indent, "(file_name %s)\n", entry->file_name);
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dumpf(indent, "(annex\n%s\n", entry->annex);
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dumpf(indent, " )\n");
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}
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}
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extern void
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table_entry_print_cpp_line_nr(lf *file,
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table_entry *entry)
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{
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lf_print__external_reference(file, entry->line_nr, entry->file_name);
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}
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