106 lines
2.0 KiB
C
106 lines
2.0 KiB
C
/*
|
|
* Copyright 2013 (c) Anna Schumaker.
|
|
*/
|
|
#include <core/filter.h>
|
|
#include <core/string.h>
|
|
|
|
static GHashTable *filter_index = NULL;
|
|
|
|
|
|
void filter_init()
|
|
{
|
|
filter_index = g_hash_table_new_full(g_str_hash, g_str_equal,
|
|
g_free, set_free);
|
|
}
|
|
|
|
void filter_deinit()
|
|
{
|
|
g_hash_table_destroy(filter_index);
|
|
}
|
|
|
|
void filter_add(const gchar *text, unsigned int index)
|
|
{
|
|
const gchar *c = g_utf8_next_char(text);
|
|
glong begin, end;
|
|
struct set *set;
|
|
gchar *substr;
|
|
|
|
for (begin = 0, end = 1; end <= g_utf8_strlen(text, -1); end++) {
|
|
substr = g_utf8_substring(text, begin, end);
|
|
set = g_hash_table_lookup(filter_index, substr);
|
|
|
|
if (!set) {
|
|
set = set_alloc();
|
|
g_hash_table_insert(filter_index, substr, set);
|
|
}
|
|
|
|
set_insert(set, index);
|
|
|
|
if (g_unichar_isspace(g_utf8_get_char(c))) {
|
|
c = g_utf8_next_char(c);
|
|
begin = ++end;
|
|
}
|
|
|
|
c = g_utf8_next_char(c);
|
|
}
|
|
}
|
|
|
|
void filter_remove(const gchar *text, unsigned int index)
|
|
{
|
|
const gchar *c = g_utf8_next_char(text);
|
|
glong begin, end;
|
|
struct set *set;
|
|
gchar *substr;
|
|
|
|
for (begin = 0, end = 1; end <= g_utf8_strlen(text, -1); end++) {
|
|
substr = g_utf8_substring(text, begin, end);
|
|
set = g_hash_table_lookup(filter_index, substr);
|
|
|
|
if (set)
|
|
set_remove(set, index);
|
|
|
|
if (g_unichar_isspace(g_utf8_get_char(c))) {
|
|
c = g_utf8_next_char(c);
|
|
begin = ++end;
|
|
}
|
|
|
|
c = g_utf8_next_char(c);
|
|
}
|
|
}
|
|
|
|
void filter_search(const gchar *text, struct set *res)
|
|
{
|
|
gchar *lower = string_lowercase(text);
|
|
struct set *found;
|
|
glong begin, end;
|
|
gchar *c, *substr;
|
|
|
|
set_clear(res);
|
|
c = lower;
|
|
|
|
for (begin = 0, end = 1; end <= g_utf8_strlen(lower, -1); end++) {
|
|
c = g_utf8_next_char(c);
|
|
if ((*c != '\0') && !g_unichar_isspace(g_utf8_get_char(c)))
|
|
continue;
|
|
|
|
substr = g_utf8_substring(lower, begin, end);
|
|
found = g_hash_table_lookup(filter_index, substr);
|
|
g_free(substr);
|
|
|
|
if (!found) {
|
|
set_clear(res);
|
|
break;
|
|
}
|
|
|
|
if (begin == 0)
|
|
set_copy(found, res);
|
|
else
|
|
set_inline_intersect(found, res);
|
|
|
|
c = g_utf8_next_char(c);
|
|
begin = ++end;
|
|
}
|
|
|
|
g_free(lower);
|
|
}
|