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/*
* Copyright (c) 2009, Rambler media
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY Rambler media ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Rambler BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Common tokenization functions
*/
#include <sys/types.h>
#include "tokenizers.h"
struct tokenizer tokenizers[] = {
{"osb-text", osb_tokenize_text, get_next_word },
};
struct tokenizer*
get_tokenizer (char *name)
{
int i;
for (i = 0; i < sizeof (tokenizers) / sizeof (tokenizers[0]); i ++) {
if (strcmp (tokenizers[i].name, name) == 0) {
return &tokenizers[i];
}
}
return NULL;
}
int
token_node_compare_func (gconstpointer a, gconstpointer b)
{
const token_node_t *aa = a, *bb = b;
if (aa->h1 == bb->h1) {
return aa->h2 - bb->h2;
}
return aa->h1 - bb->h1;
}
/* Get next word from specified f_str_t buf */
f_str_t *
get_next_word (f_str_t *buf, f_str_t *token)
{
size_t remain;
char *pos;
if (buf == NULL) {
return NULL;
}
if (token->begin == NULL) {
token->begin = buf->begin;
}
token->begin = token->begin + token->len;
token->len = 0;
remain = buf->len - (token->begin - buf->begin);
if (remain <= 0) {
return NULL;
}
pos = token->begin;
/* Skip non graph symbols */
while (remain > 0 && !g_ascii_isgraph (*pos)) {
token->begin ++;
pos ++;
remain --;
}
while (remain > 0 && g_ascii_isgraph (*pos)) {
token->len ++;
pos ++;
remain --;
}
if (token->len == 0) {
return NULL;
}
return token;
}
/*
* vi:ts=4
*/
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