mirror of
https://github.com/profanity-im/profanity.git
synced 2024-10-06 20:03:46 -04:00
264 lines
6.4 KiB
C
264 lines
6.4 KiB
C
/*
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* prof_autocomplete.c
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*
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* Copyright (C) 2012 James Booth <boothj5@gmail.com>
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*
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* This file is part of Profanity.
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*
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* Profanity is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Profanity is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Profanity. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include "common.h"
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#include "prof_autocomplete.h"
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struct p_autocomplete_t {
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GSList *items;
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GSList *last_found;
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gchar *search_str;
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PStrFunc str_func;
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PCopyFunc copy_func;
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PEqualDeepFunc equal_deep_func;
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GDestroyNotify free_func;
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};
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static gchar * _search_from(PAutocomplete ac, GSList *curr);
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static const char *_str_func_default(const char *orig);
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static const char *_copy_func_default(const char *orig);
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static int _deep_equals_func_default(const char *o1, const char *o2);
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PAutocomplete
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p_autocomplete_new(void)
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{
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return p_obj_autocomplete_new(NULL, NULL, NULL, NULL);
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}
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PAutocomplete
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p_obj_autocomplete_new(PStrFunc str_func, PCopyFunc copy_func,
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PEqualDeepFunc equal_deep_func, GDestroyNotify free_func)
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{
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PAutocomplete new = malloc(sizeof(struct p_autocomplete_t));
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new->items = NULL;
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new->last_found = NULL;
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new->search_str = NULL;
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if (str_func)
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new->str_func = str_func;
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else
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new->str_func = (PStrFunc)_str_func_default;
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if (copy_func)
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new->copy_func = copy_func;
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else
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new->copy_func = (PCopyFunc)_copy_func_default;
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if (free_func)
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new->free_func = free_func;
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else
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new->free_func = (GDestroyNotify)free;
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if (equal_deep_func)
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new->equal_deep_func = equal_deep_func;
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else
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new->equal_deep_func = (PEqualDeepFunc)_deep_equals_func_default;
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return new;
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}
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void
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p_autocomplete_clear(PAutocomplete ac)
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{
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g_slist_free_full(ac->items, ac->free_func);
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ac->items = NULL;
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p_autocomplete_reset(ac);
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}
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void
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p_autocomplete_reset(PAutocomplete ac)
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{
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ac->last_found = NULL;
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if (ac->search_str != NULL) {
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free(ac->search_str);
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ac->search_str = NULL;
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}
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}
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gboolean
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p_autocomplete_add(PAutocomplete ac, void *item)
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{
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if (ac->items == NULL) {
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ac->items = g_slist_append(ac->items, item);
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return TRUE;
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} else {
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GSList *curr = ac->items;
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while(curr) {
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// insert
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if (g_strcmp0(ac->str_func(curr->data), ac->str_func(item)) > 0) {
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ac->items = g_slist_insert_before(ac->items,
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curr, item);
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return TRUE;
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// update
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} else if (g_strcmp0(ac->str_func(curr->data), ac->str_func(item)) == 0) {
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// only update if data different
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if (!ac->equal_deep_func(curr->data, item)) {
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ac->free_func(curr->data);
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curr->data = item;
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return TRUE;
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} else {
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return FALSE;
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}
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}
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curr = g_slist_next(curr);
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}
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// hit end, append
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ac->items = g_slist_append(ac->items, item);
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return TRUE;
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}
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}
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gboolean
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p_autocomplete_remove(PAutocomplete ac, const char * const item)
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{
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// reset last found if it points to the item to be removed
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if (ac->last_found != NULL)
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if (g_strcmp0(ac->str_func(ac->last_found->data), item) == 0)
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ac->last_found = NULL;
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if (!ac->items) {
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return FALSE;
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} else {
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GSList *curr = ac->items;
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while(curr) {
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if (g_strcmp0(ac->str_func(curr->data), item) == 0) {
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void *current_item = curr->data;
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ac->items = g_slist_remove(ac->items, curr->data);
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ac->free_func(current_item);
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return TRUE;
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}
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curr = g_slist_next(curr);
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}
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return FALSE;
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}
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}
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GSList *
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p_autocomplete_get_list(PAutocomplete ac)
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{
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GSList *copy = NULL;
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GSList *curr = ac->items;
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while(curr) {
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copy = g_slist_append(copy, ac->copy_func(curr->data));
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curr = g_slist_next(curr);
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}
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return copy;
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}
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gchar *
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p_autocomplete_complete(PAutocomplete ac, gchar *search_str)
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{
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gchar *found = NULL;
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// no items to search
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if (!ac->items)
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return NULL;
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// first search attempt
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if (ac->last_found == NULL) {
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ac->search_str =
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(gchar *) malloc((strlen(search_str) + 1) * sizeof(gchar));
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strcpy(ac->search_str, search_str);
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found = _search_from(ac, ac->items);
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return found;
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// subsequent search attempt
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} else {
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// search from here+1 tp end
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found = _search_from(ac, g_slist_next(ac->last_found));
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if (found != NULL)
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return found;
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// search from beginning
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found = _search_from(ac, ac->items);
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if (found != NULL)
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return found;
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// we found nothing, reset search
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p_autocomplete_reset(ac);
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return NULL;
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}
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}
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static gchar *
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_search_from(PAutocomplete ac, GSList *curr)
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{
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while(curr) {
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// match found
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if (strncmp(ac->str_func(curr->data),
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ac->search_str,
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strlen(ac->search_str)) == 0) {
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gchar *result =
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(gchar *) malloc((strlen(ac->str_func(curr->data)) + 1) * sizeof(gchar));
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// set pointer to last found
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ac->last_found = curr;
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// return the string, must be free'd by caller
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strcpy(result, ac->str_func(curr->data));
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return result;
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}
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curr = g_slist_next(curr);
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}
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return NULL;
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}
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static const char *
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_str_func_default(const char *orig)
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{
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return orig;
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}
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static const char *
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_copy_func_default(const char *orig)
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{
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return strdup(orig);
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}
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static int
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_deep_equals_func_default(const char *o1, const char *o2)
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{
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return (strcmp(o1, o2) == 0);
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}
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