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/* This file is part of the program psim.
Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
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 <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <fcntl.h>
#include <ctype.h>
#include "misc.h"
#include "lf.h"
#include "table.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
struct _table {
size_t size;
char *buffer;
char *pos;
int line_nr;
int nr_fields;
char *file_name;
};
extern table *
table_open(char *file_name,
int nr_fields)
{
int fd;
struct stat stat_buf;
table *file;
/* create a file descriptor */
file = ZALLOC(table);
ASSERT(file != NULL);
file->nr_fields = nr_fields;
/* save the file name */
file->file_name = (char*)zalloc(strlen(file_name) + 1);
ASSERT(file->file_name != NULL);
strcpy(file->file_name, file_name);
/* open the file */
fd = open(file->file_name, O_RDONLY, 0);
ASSERT(fd >= 0);
/* determine the size */
if (fstat(fd, &stat_buf) < 0) {
perror("table_open.fstat");
exit(1);
}
file->size = stat_buf.st_size;
/* allocate this much memory */
file->buffer = (char*)zalloc(file->size+1);
if(file->buffer == NULL) {
perror("table_open.calloc.file->size+1");
exit(1);
}
file->pos = file->buffer;
/* read it in */
if (read(fd, file->buffer, file->size) < file->size) {
perror("table_open.read");
exit(1);
}
file->buffer[file->size] = '\0';
/* done */
close(fd);
return file;
}
extern table_entry *
table_entry_read(table *file)
{
int field;
table_entry *entry;
/* skip comments/blanks */
while(1) {
/* leading white space */
while (*file->pos != '\0'
&& *file->pos != '\n'
&& isspace(*file->pos))
file->pos++;
/* comment */
if (*file->pos == '#') {
do {
file->pos++;
} while (*file->pos != '\0' && *file->pos != '\n');
}
/* end of line? */
if (*file->pos == '\n') {
file->pos++;
file->line_nr++;
}
else
break;
}
if (*file->pos == '\0')
return NULL;
/* create this new entry */
entry = (table_entry*)zalloc(sizeof(table_entry)
+ (file->nr_fields + 1) * sizeof(char*));
ASSERT(entry != NULL);
entry->file_name = file->file_name;
entry->nr_fields = file->nr_fields;
/* break the line into its colon delimitered fields */
for (field = 0; field < file->nr_fields-1; field++) {
entry->fields[field] = file->pos;
while(*file->pos && *file->pos != ':' && *file->pos != '\n')
file->pos++;
if (*file->pos == ':') {
*file->pos = '\0';
file->pos++;
}
}
/* any trailing stuff not the last field */
ASSERT(field == file->nr_fields-1);
entry->fields[field] = file->pos;
while (*file->pos && *file->pos != '\n') {
file->pos++;
}
if (*file->pos == '\n') {
*file->pos = '\0';
file->pos++;
}
file->line_nr++;
entry->line_nr = file->line_nr;
/* if following lines tab indented, put in the annex */
if (*file->pos == '\t') {
entry->annex = file->pos;
do {
do {
file->pos++;
} while (*file->pos != '\0' && *file->pos != '\n');
if (*file->pos == '\n') {
file->pos++;
file->line_nr++;
}
} while (*file->pos != '\0' && *file->pos == '\t');
if (file->pos[-1] == '\n')
file->pos[-1] = '\0';
}
else
entry->annex = NULL;
/* return it */
return entry;
}
extern void
dump_table_entry(table_entry *entry,
int indent)
{
printf("(table_entry*)%p\n", entry);
if (entry != NULL) {
int field;
char sep;
sep = ' ';
dumpf(indent, "(fields");
for (field = 0; field < entry->nr_fields; field++) {
printf("%c%s", sep, entry->fields[field]);
sep = ':';
}
printf(")\n");
dumpf(indent, "(line_nr %d)\n", entry->line_nr);
dumpf(indent, "(file_name %s)\n", entry->file_name);
dumpf(indent, "(annex\n%s\n", entry->annex);
dumpf(indent, " )\n");
}
}
extern void
table_entry_lf_c_line_nr(lf *file,
table_entry *entry)
{
lf_print_c_line_nr(file, entry->line_nr, entry->file_name);
}
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