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/*
Copyright (C) 2009-2018 Brazil
Copyright (C) 2021-2022 Sutou Kouhei <kou@clear-code.com>
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
*/
#include "../grn_proc.h"
#include "../grn_ctx.h"
#include <groonga/plugin.h>
static int
parse_normalize_flags(grn_ctx *ctx, grn_raw_string *flags_raw)
{
int flags = 0;
const char *names, *names_end;
names = flags_raw->value;
names_end = names + flags_raw->length;
while (names < names_end) {
if (*names == '|' || *names == ' ') {
names += 1;
continue;
}
#define CHECK_FLAG(name)\
if (((size_t)(names_end - names) >= (sizeof(#name) - 1)) && \
(!memcmp(names, #name, sizeof(#name) - 1))) {\
flags |= GRN_STRING_ ## name;\
names += sizeof(#name) - 1;\
continue;\
}
CHECK_FLAG(REMOVE_BLANK);
CHECK_FLAG(WITH_TYPES);
CHECK_FLAG(WITH_CHECKS);
CHECK_FLAG(REMOVE_TOKENIZED_DELIMITER);
#define GRN_STRING_NONE 0
CHECK_FLAG(NONE);
#undef GRN_STRING_NONE
ERR(GRN_INVALID_ARGUMENT, "[normalize] invalid flag: <%.*s>",
(int)(names_end - names), names);
return 0;
#undef CHECK_FLAG
}
return flags;
}
static grn_obj *
command_normalize(grn_ctx *ctx, int nargs, grn_obj **args, grn_user_data *user_data)
{
const char *context_tag = "[normalize]";
grn_raw_string normalizer_raw;
grn_raw_string string_raw;
grn_raw_string flags_raw;
grn_raw_string normalizers_raw;
#define GET_VALUE(name) \
name ## _raw.value = \
grn_plugin_proc_get_var_string(ctx, \
user_data, \
#name, \
strlen(#name), \
&(name ## _raw.length))
GET_VALUE(normalizer);
GET_VALUE(string);
GET_VALUE(flags);
GET_VALUE(normalizers);
#undef GET_VALUE
if (normalizers_raw.length == 0 && normalizer_raw.length > 0) {
normalizers_raw = normalizer_raw;
}
if (normalizers_raw.length == 0) {
GRN_PLUGIN_ERROR(ctx,
GRN_INVALID_ARGUMENT,
"%s normalizer name is missing",
context_tag);
return NULL;
}
{
int flags;
int n_elements = 3;
grn_obj *lexicon;
grn_obj *grn_string;
unsigned int normalized_length_in_bytes;
unsigned int normalized_n_characters;
const uint64_t *offsets;
flags = parse_normalize_flags(ctx, &flags_raw);
if (ctx->rc != GRN_SUCCESS) {
return NULL;
}
lexicon = grn_proc_lexicon_open(ctx,
NULL,
&normalizers_raw,
NULL,
context_tag);
if (!lexicon) {
return NULL;
}
grn_string = grn_string_open(ctx,
string_raw.value,
(unsigned int)(string_raw.length),
lexicon,
flags);
offsets = grn_string_get_offsets(ctx, grn_string);
if (offsets) {
n_elements++;
}
grn_ctx_output_map_open(ctx, "RESULT", n_elements);
{
const char *normalized;
grn_string_get_normalized(ctx,
grn_string,
&normalized,
&normalized_length_in_bytes,
&normalized_n_characters);
grn_ctx_output_cstr(ctx, "normalized");
grn_ctx_output_str(ctx, normalized, normalized_length_in_bytes);
}
{
const unsigned char *types;
types = grn_string_get_types(ctx, grn_string);
grn_ctx_output_cstr(ctx, "types");
if (types) {
unsigned int i;
grn_ctx_output_array_open(ctx, "types", (int)normalized_n_characters);
for (i = 0; i <= normalized_n_characters; i++) {
grn_ctx_output_cstr(ctx, grn_char_type_to_string(types[i]));
}
grn_ctx_output_array_close(ctx);
} else {
grn_ctx_output_array_open(ctx, "types", 0);
grn_ctx_output_array_close(ctx);
}
}
{
const short *checks;
checks = grn_string_get_checks(ctx, grn_string);
grn_ctx_output_cstr(ctx, "checks");
if (checks) {
unsigned int i;
grn_ctx_output_array_open(ctx, "checks", (int)normalized_length_in_bytes);
for (i = 0; i < normalized_length_in_bytes; i++) {
grn_ctx_output_int32(ctx, checks[i]);
}
grn_ctx_output_array_close(ctx);
} else {
grn_ctx_output_array_open(ctx, "checks", 0);
grn_ctx_output_array_close(ctx);
}
}
if (offsets) {
unsigned int i;
grn_ctx_output_cstr(ctx, "offsets");
grn_ctx_output_array_open(ctx, "offsets", (int)normalized_n_characters);
for (i = 0; i <= normalized_n_characters; i++) {
grn_ctx_output_uint64(ctx, offsets[i]);
}
grn_ctx_output_array_close(ctx);
}
grn_ctx_output_map_close(ctx);
grn_obj_unlink(ctx, grn_string);
grn_obj_unlink(ctx, lexicon);
}
return NULL;
}
void
grn_proc_init_normalize(grn_ctx *ctx)
{
grn_expr_var vars[4];
grn_plugin_expr_var_init(ctx, &(vars[0]), "normalizer", -1);
grn_plugin_expr_var_init(ctx, &(vars[1]), "string", -1);
grn_plugin_expr_var_init(ctx, &(vars[2]), "flags", -1);
grn_plugin_expr_var_init(ctx, &(vars[3]), "normalizers", -1);
grn_plugin_command_create(ctx,
"normalize", -1,
command_normalize,
4,
vars);
}
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