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/*
This file is part of pybliographer
Copyright (C) 1998-1999 Frederic GOBRY
Email : gobry@idiap.ch
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.
$Id: source.c,v 1.1.2.1 2003/09/01 19:54:46 fredgo Exp $
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#include "bibtex.h"
BibtexSource *
bibtex_source_new (void) {
BibtexSource * new;
new = g_new (BibtexSource, 1);
new->name = NULL;
new->type = BIBTEX_SOURCE_NONE;
new->table = g_hash_table_new (g_str_hash, g_str_equal);
new->debug = FALSE;
new->buffer = NULL;
new->strict = TRUE;
return new;
}
static void
reset_source (BibtexSource * source) {
bibtex_analyzer_finish (source);
if (source->name) {
g_free (source->name);
}
switch (source->type) {
case BIBTEX_SOURCE_NONE:
break;
case BIBTEX_SOURCE_FILE:
fclose (source->source.file);
break;
case BIBTEX_SOURCE_STRING:
g_free (source->source.string);
break;
default:
g_assert_not_reached ();
}
source->offset = 0;
source->line = 1;
source->eof = FALSE;
source->error = FALSE;
}
static void
freedata (gpointer key,
gpointer value,
gpointer user) {
g_free (key);
if ((gboolean) GPOINTER_TO_INT(user)) {
bibtex_struct_destroy ((BibtexStruct *) value, TRUE);
}
}
BibtexStruct *
bibtex_source_get_string (BibtexSource * source,
gchar * key) {
g_return_val_if_fail (source != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
return g_hash_table_lookup (source->table, key);
}
void
bibtex_source_set_string (BibtexSource * source,
gchar * key,
BibtexStruct * value) {
gchar * inskey = key;
BibtexStruct * oldstruct = NULL;
g_return_if_fail (source != NULL);
g_return_if_fail (key != NULL);
if ((oldstruct = g_hash_table_lookup (source->table, inskey)) == NULL) {
inskey = g_strdup (key);
g_strdown (inskey);
}
else {
bibtex_struct_destroy (oldstruct, TRUE);
}
g_hash_table_insert (source->table, inskey, value);
}
void
bibtex_source_destroy (BibtexSource * source,
gboolean free_data) {
g_return_if_fail (source != NULL);
g_hash_table_foreach (source->table, freedata, GINT_TO_POINTER(free_data));
g_hash_table_destroy (source->table);
reset_source (source);
g_free (source);
}
gboolean
bibtex_source_file (BibtexSource * source,
gchar * filename) {
FILE * fh = NULL;
g_return_val_if_fail (source != NULL, FALSE);
g_return_val_if_fail (filename != NULL, FALSE);
fh = fopen (filename, "r");
if (fh == NULL) {
bibtex_error ("can't open file `%s': %s",
filename,
g_strerror (errno));
return FALSE;
}
reset_source (source);
source->type = BIBTEX_SOURCE_FILE;
source->name = g_strdup (filename);
source->source.file = fh;
bibtex_analyzer_initialize (source);
return TRUE;
}
gboolean
bibtex_source_string (BibtexSource * source,
gchar * name,
gchar * string) {
g_return_val_if_fail (source != NULL, FALSE);
g_return_val_if_fail (string != NULL, FALSE);
reset_source (source);
source->type = BIBTEX_SOURCE_STRING;
if (name) {
source->name = g_strdup (name);
}
else {
source->name = g_strdup ("<string>");
}
source->source.string = g_strdup (string);
bibtex_analyzer_initialize (source);
return TRUE;
}
void
bibtex_source_rewind (BibtexSource * file) {
bibtex_source_set_offset (file, 0);
}
gint
bibtex_source_get_offset (BibtexSource * file) {
g_return_val_if_fail (file != NULL, -1);
return file->offset;
}
void
bibtex_source_set_offset (BibtexSource * file,
gint offset) {
g_return_if_fail (file != NULL);
bibtex_analyzer_finish (file);
switch (file->type) {
case BIBTEX_SOURCE_FILE:
if (fseek (file->source.file, offset, SEEK_SET) == -1) {
bibtex_error ("%s: can't jump to offset %d: %s",
file->name,
offset, g_strerror (errno));
file->error = TRUE;
return;
}
break;
case BIBTEX_SOURCE_STRING:
break;
case BIBTEX_SOURCE_NONE:
g_warning ("no source to set offset");
break;
}
file->offset = offset;
file->eof = file->error = FALSE;
bibtex_analyzer_initialize (file);
}
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