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/*
* Copyright (C) 2023, Red Hat Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Author: Carlos Garnacho <carlosg@gnome.org>
*/
#include "config.h"
#include <gio/gio.h>
#include <gmodule.h>
#include "tracker-parser.h"
#include "tracker-debug.h"
static TrackerParser * (*parser_new) (void);
static void (*parser_free) (TrackerParser *parser);
static void (*parser_reset) (TrackerParser *parser,
const gchar *txt,
gint txt_size,
guint max_word_length,
gboolean enable_stemmer,
gboolean enable_unaccent,
gboolean ignore_stop_words,
gboolean ignore_reserved_words,
gboolean ignore_numbers);
static const gchar * (*parser_next) (TrackerParser *parser,
gint *position,
gint *byte_offset_start,
gint *byte_offset_end,
gboolean *stop_word,
gint *word_length);
static gpointer (*collation_init) (void);
static void (*collation_shutdown) (gpointer collator);
static gint (*collation_utf8) (gpointer collator,
gint len1,
gconstpointer str1,
gint len2,
gconstpointer str2);
static gunichar2 * (*util_tolower) (const gunichar2 *input,
gsize len,
gsize *len_out);
static gunichar2 * (*util_toupper) (const gunichar2 *input,
gsize len,
gsize *len_out);
static gunichar2 * (*util_casefold) (const gunichar2 *input,
gsize len,
gsize *len_out);
static gunichar2 * (*util_normalize) (const gunichar2 *input,
GNormalizeMode mode,
gsize len,
gsize *len_out);
static gunichar2 * (*util_unaccent) (const gunichar2 *input,
gsize len,
gsize *len_out);
static void
ensure_init_parser (void)
{
static GModule *module = NULL;
if (module == NULL) {
const gchar *modules[] = {
"libtracker-parser-libicu.so",
"libtracker-parser-libunistring.so"
};
gchar *module_path;
guint i;
g_assert (g_module_supported ());
for (i = 0; i < G_N_ELEMENTS (modules); i++) {
if (g_strcmp0 (g_get_current_dir (), BUILDROOT) == 0) {
/* Detect in-build runtime of this code, this may happen
* building introspection information or running tests.
* We want the in-tree modules to be loaded then.
*/
module_path = g_strdup_printf (BUILD_LIBDIR "/%s", modules[i]);
} else {
module_path = g_strdup_printf (PRIVATE_LIBDIR "/%s", modules[i]);
}
module = g_module_open (module_path,
G_MODULE_BIND_LAZY |
G_MODULE_BIND_LOCAL);
g_free (module_path);
if (module)
break;
}
g_assert (module != NULL);
if (!g_module_symbol (module, "tracker_parser_new", (gpointer *) &parser_new) ||
!g_module_symbol (module, "tracker_parser_free", (gpointer *) &parser_free) ||
!g_module_symbol (module, "tracker_parser_reset", (gpointer *) &parser_reset) ||
!g_module_symbol (module, "tracker_parser_next", (gpointer *) &parser_next) ||
!g_module_symbol (module, "tracker_collation_init", (gpointer *) &collation_init) ||
!g_module_symbol (module, "tracker_collation_shutdown", (gpointer *) &collation_shutdown) ||
!g_module_symbol (module, "tracker_collation_utf8", (gpointer *) &collation_utf8) ||
!g_module_symbol (module, "tracker_parser_tolower", (gpointer *) &util_tolower) ||
!g_module_symbol (module, "tracker_parser_toupper", (gpointer *) &util_toupper) ||
!g_module_symbol (module, "tracker_parser_casefold", (gpointer *) &util_casefold) ||
!g_module_symbol (module, "tracker_parser_normalize", (gpointer *) &util_normalize) ||
!g_module_symbol (module, "tracker_parser_unaccent", (gpointer *) &util_unaccent)) {
g_printerr ("Could not initialize parser functions: %s\n",
g_module_error ());
}
TRACKER_NOTE (COLLATION, g_message ("Initialized collator %s", g_module_name (module)));
g_module_make_resident (module);
g_module_close (module);
}
}
TrackerParser *
tracker_parser_new (void)
{
ensure_init_parser ();
return parser_new ();
}
void
tracker_parser_free (TrackerParser *parser)
{
parser_free (parser);
}
void
tracker_parser_reset (TrackerParser *parser,
const gchar *txt,
gint txt_size,
guint max_word_length,
gboolean enable_stemmer,
gboolean enable_unaccent,
gboolean ignore_stop_words,
gboolean ignore_reserved_words,
gboolean ignore_numbers)
{
parser_reset (parser, txt, txt_size,
max_word_length,
enable_stemmer,
enable_unaccent,
ignore_stop_words,
ignore_reserved_words,
ignore_numbers);
}
const gchar *
tracker_parser_next (TrackerParser *parser,
gint *position,
gint *byte_offset_start,
gint *byte_offset_end,
gboolean *stop_word,
gint *word_length)
{
return parser_next (parser, position,
byte_offset_start,
byte_offset_end,
stop_word,
word_length);
}
gpointer
tracker_collation_init (void)
{
ensure_init_parser ();
return collation_init ();
}
void
tracker_collation_shutdown (gpointer collator)
{
collation_shutdown (collator);
}
gint
tracker_collation_utf8 (gpointer collator,
gint len1,
gconstpointer str1,
gint len2,
gconstpointer str2)
{
return collation_utf8 (collator, len1, str1, len2, str2);
}
gunichar2 *
tracker_parser_tolower (const gunichar2 *input,
gsize len,
gsize *len_out)
{
ensure_init_parser ();
return util_tolower (input, len, len_out);
}
gunichar2 *
tracker_parser_toupper (const gunichar2 *input,
gsize len,
gsize *len_out)
{
ensure_init_parser ();
return util_toupper (input, len, len_out);
}
gunichar2 *
tracker_parser_casefold (const gunichar2 *input,
gsize len,
gsize *len_out)
{
ensure_init_parser ();
return util_casefold (input, len, len_out);
}
gunichar2 *
tracker_parser_normalize (const gunichar2 *input,
GNormalizeMode mode,
gsize len,
gsize *len_out)
{
ensure_init_parser ();
return util_normalize (input, mode, len, len_out);
}
gunichar2 *
tracker_parser_unaccent (const gunichar2 *input,
gsize len,
gsize *len_out)
{
ensure_init_parser ();
return util_unaccent (input, len, len_out);
}
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