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core/filter: Switch from using Index to a GHashTable 

This is more straightforward than using my custom index code without
adding too much work.

Implements #43: Filter code can use a GHashTable directly
Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>
This commit is contained in:
Anna Schumaker 2016-04-29 07:57:06 -04:00 committed by Anna Schumaker
parent ee4bbacf81
commit 04a175d3e3
1 changed files with 24 additions and 11 deletions
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35
core/filter.c
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@ -1,26 +1,40 @@
/*
* Copyright 2013 (c) Anna Schumaker.
*/
#include <core/containers/index.h>
#include <core/filter.h>
#include <core/string.h>
static GHashTable *filter_index = NULL;
static struct database filter_index;
void filter_init() { index_init(&filter_index, "", false); }
void filter_deinit() { db_deinit(&filter_index); }
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);
index_insert(&filter_index, substr, index);
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);
@ -28,14 +42,13 @@ void filter_add(const gchar *text, unsigned int index)
}
c = g_utf8_next_char(c);
g_free(substr);
}
}
void filter_search(const gchar *text, struct set *res)
{
gchar *lower = string_lowercase(text);
struct index_entry *found;
struct set *found;
glong begin, end;
gchar *c, *substr;
@ -48,7 +61,7 @@ void filter_search(const gchar *text, struct set *res)
continue;
substr = g_utf8_substring(lower, begin, end);
found = INDEX_ENTRY(db_get(&filter_index, substr));
found = g_hash_table_lookup(filter_index, substr);
g_free(substr);
if (!found) {
@ -57,9 +70,9 @@ void filter_search(const gchar *text, struct set *res)
}
if (begin == 0)
set_copy(&found->ie_set, res);
set_copy(found, res);
else
set_inline_intersect(&found->ie_set, res);
set_inline_intersect(found, res);
c = g_utf8_next_char(c);
begin = ++end;