70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
/*
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* Copyright 2013 (c) Anna Schumaker.
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*/
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#include <core/containers/index.h>
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#include <core/filter.h>
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#include <core/string.h>
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static struct database filter_index;
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void filter_init() { index_init(&filter_index, "", false); }
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void filter_deinit() { db_deinit(&filter_index); }
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void filter_add(const gchar *text, unsigned int index)
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{
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const gchar *c = g_utf8_next_char(text);
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glong begin, end;
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gchar *substr;
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for (begin = 0, end = 1; end <= g_utf8_strlen(text, -1); end++) {
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substr = g_utf8_substring(text, begin, end);
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index_insert(&filter_index, substr, index);
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if (g_unichar_isspace(g_utf8_get_char(c))) {
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c = g_utf8_next_char(c);
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begin = ++end;
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}
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c = g_utf8_next_char(c);
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g_free(substr);
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}
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}
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void filter_search(const gchar *text, struct set *res)
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{
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gchar *lower = string_lowercase(text);
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struct index_entry *found;
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glong begin, end;
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gchar *c, *substr;
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set_clear(res);
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c = lower;
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for (begin = 0, end = 1; end <= g_utf8_strlen(lower, -1); end++) {
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c = g_utf8_next_char(c);
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if ((*c != '\0') && !g_unichar_isspace(g_utf8_get_char(c)))
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continue;
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substr = g_utf8_substring(lower, begin, end);
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found = INDEX_ENTRY(db_get(&filter_index, substr));
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g_free(substr);
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if (!found) {
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set_clear(res);
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break;
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}
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if (begin == 0)
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set_copy(&found->ie_set, res);
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else
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set_inline_intersect(&found->ie_set, res);
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c = g_utf8_next_char(c);
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begin = ++end;
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}
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g_free(lower);
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}
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