+++ /dev/null
-/*
- * Copyright (C) 2008 - 2016 The Geeqie Team
- *
- * Authors: John Ellis, Vladimir Nadvornik, Laurent Monin
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "main.h"
-#include "history_list.h"
-
-#include "secure_save.h"
-#include "ui_fileops.h"
-
-static void update_recent_viewed_folder_image_list(const gchar *path);
-
-/**
- * @file
- *-----------------------------------------------------------------------------
- * Implements a history chain. Used by the Back and Forward toolbar buttons.
- * Selecting any folder appends the path to the end of the chain.
- * Pressing the Back and Forward buttons moves along the chain, but does
- * not make additions to the chain.
- * The chain always increases and is deleted at the end of the session
- *
- *-----------------------------------------------------------------------------
- */
-
-static GList *history_chain = NULL;
-static guint chain_index = G_MAXUINT;
-static gboolean nav_button = FALSE; /** Used to prevent the nav buttons making entries to the chain **/
-
-const gchar *history_chain_back()
-{
- nav_button = TRUE;
-
- chain_index = chain_index > 0 ? chain_index - 1 : 0;
-
- return g_list_nth_data(history_chain, chain_index);
-}
-
-const gchar *history_chain_forward()
-{
- nav_button= TRUE;
- guint last = g_list_length(history_chain) - 1;
-
- chain_index = chain_index < last ? chain_index + 1 : last;
-
- return g_list_nth_data(history_chain, chain_index);
-}
-
-/**
- * @brief Appends a path to the history chain
- * @param path Path selected
- *
- * Each time the user selects a new path it is appended to the chain
- * except when it is identical to the current last entry
- * The pointer is always moved to the end of the chain
- */
-void history_chain_append_end(const gchar *path)
-{
- GList *work;
-
- if (!nav_button)
- {
- if(chain_index == G_MAXUINT)
- {
- history_chain = g_list_append (history_chain, g_strdup(path));
- chain_index = 0;
- }
- else
- {
- work = g_list_last(history_chain);
- if (g_strcmp0(work->data , path) != 0)
- {
- history_chain = g_list_append (history_chain, g_strdup(path));
- chain_index = g_list_length(history_chain) - 1;
- DEBUG_3("%d %s", chain_index, path);
- }
- else
- {
- chain_index = g_list_length(history_chain) - 1;
- }
- }
- }
- else
- {
- nav_button = FALSE;
- }
-}
-
-/**
- * @file
- *-----------------------------------------------------------------------------
- * Implements an image history chain. Whenever an image is displayed it is
- * appended to a chain.
- * Pressing the Image Back and Image Forward buttons moves along the chain,
- * but does not make additions to the chain.
- * The chain always increases and is deleted at the end of the session
- *
- *-----------------------------------------------------------------------------
- */
-static GList *image_chain = NULL;
-static guint image_chain_index = G_MAXUINT;
-static gboolean image_nav_button = FALSE; /** Used to prevent the nav buttons making entries to the chain **/
-const gchar *image_chain_back()
-{
- image_nav_button = TRUE;
-
- image_chain_index = image_chain_index > 0 ? image_chain_index - 1 : 0;
-
- return g_list_nth_data(image_chain, image_chain_index);
-}
-
-const gchar *image_chain_forward()
-{
- image_nav_button= TRUE;
- guint last = g_list_length(image_chain) - 1;
-
- image_chain_index = image_chain_index < last ? image_chain_index + 1 : last;
-
- return g_list_nth_data(image_chain, image_chain_index);
-}
-
-/**
- * @brief Appends a path to the image history chain
- * @param path Image path selected
- *
- * Each time the user selects a new image it is appended to the chain
- * except when it is identical to the current last entry
- * The pointer is always moved to the end of the chain
- *
- * Updates the recent viewed image_list
- */
-void image_chain_append_end(const gchar *path)
-{
- GList *work;
-
- if (!image_nav_button)
- {
- if(image_chain_index == G_MAXUINT)
- {
- image_chain = g_list_append(image_chain, g_strdup(path));
- image_chain_index = 0;
- }
- else
- {
- work = g_list_last(image_chain);
- if (g_strcmp0(work->data , path) != 0)
- {
- image_chain = g_list_append(image_chain, g_strdup(path));
- image_chain_index = g_list_length(image_chain) - 1;
- DEBUG_3("%d %s", image_chain_index, path);
- }
- else
- {
- image_chain_index = g_list_length(image_chain) - 1;
- }
- }
-
- update_recent_viewed_folder_image_list(path);
- }
- else
- {
- image_nav_button = FALSE;
- }
-}
-
-/*
- *-----------------------------------------------------------------------------
- * history lists
- *-----------------------------------------------------------------------------
- */
-
-typedef struct _HistoryData HistoryData;
-struct _HistoryData
-{
- gchar *key;
- GList *list;
-};
-
-static GList *history_list = NULL;
-
-
-static gchar *quoted_from_text(const gchar *text)
-{
- const gchar *ptr;
- gint c = 0;
- gint l = strlen(text);
-
- if (l == 0) return NULL;
-
- while (c < l && text[c] !='"') c++;
- if (text[c] == '"')
- {
- gint e;
- c++;
- ptr = text + c;
- e = c;
- while (e < l && text[e] !='"') e++;
- if (text[e] == '"')
- {
- if (e - c > 0)
- {
- return g_strndup(ptr, e - c);
- }
- }
- }
- return NULL;
-}
-
-gboolean history_list_load(const gchar *path)
-{
- FILE *f;
- gchar *key = NULL;
- gchar s_buf[1024];
- gchar *pathl;
-
- pathl = path_from_utf8(path);
- f = fopen(pathl, "r");
- g_free(pathl);
- if (!f) return FALSE;
-
- /* first line must start with History comment */
- if (!fgets(s_buf, sizeof(s_buf), f) ||
- strncmp(s_buf, "#History", 8) != 0)
- {
- fclose(f);
- return FALSE;
- }
-
- while (fgets(s_buf, sizeof(s_buf), f))
- {
- if (s_buf[0]=='#') continue;
- if (s_buf[0]=='[')
- {
- gint c;
- gchar *ptr;
-
- ptr = s_buf + 1;
- c = 0;
- while (ptr[c] != ']' && ptr[c] != '\n' && ptr[c] != '\0') c++;
-
- g_free(key);
- key = g_strndup(ptr, c);
- }
- else
- {
- gchar *value;
-
- value = quoted_from_text(s_buf);
- if (value && key)
- {
- history_list_add_to_key(key, value, 0);
- }
- g_free(value);
- }
- }
-
- fclose(f);
-
- g_free(key);
-
- return TRUE;
-}
-
-gboolean history_list_save(const gchar *path)
-{
- SecureSaveInfo *ssi;
- GList *list;
- gchar *pathl;
- gint list_count;
-
- pathl = path_from_utf8(path);
- ssi = secure_open(pathl);
- g_free(pathl);
- if (!ssi)
- {
- log_printf(_("Unable to write history lists to: %s\n"), path);
- return FALSE;
- }
-
- secure_fprintf(ssi, "#History lists\n\n");
-
- list = g_list_last(history_list);
- while (list && secsave_errno == SS_ERR_NONE)
- {
- HistoryData *hd;
- GList *work;
-
- hd = list->data;
- list = list->prev;
-
- secure_fprintf(ssi, "[%s]\n", hd->key);
-
- /* save them inverted (oldest to newest)
- * so that when reading they are added correctly
- */
- work = g_list_last(hd->list);
- list_count = g_list_position(hd->list, g_list_last(hd->list)) + 1;
- while (work && secsave_errno == SS_ERR_NONE)
- {
- if ((!(strcmp(hd->key, "path_list") == 0 && list_count > options->open_recent_list_maxsize))
- &&
- (!(strcmp(hd->key, "recent") == 0 && (!isfile(work->data))))
- &&
- (!(strcmp(hd->key, "image_list") == 0 && list_count > options->recent_folder_image_list_maxsize)))
- {
- secure_fprintf(ssi, "\"%s\"\n", (gchar *)work->data);
- }
- work = work->prev;
- list_count--;
- }
- secure_fputc(ssi, '\n');
- }
-
- secure_fprintf(ssi, "#end\n");
-
- return (secure_close(ssi) == 0);
-}
-
-static void history_list_free(HistoryData *hd)
-{
- GList *work;
-
- if (!hd) return;
-
- work = hd->list;
- while (work)
- {
- g_free(work->data);
- work = work->next;
- }
-
- g_free(hd->key);
- g_free(hd);
-}
-
-static HistoryData *history_list_find_by_key(const gchar *key)
-{
- GList *work = history_list;
-
- if (!key) return NULL;
-
- while (work)
- {
- HistoryData *hd = work->data;
- if (strcmp(hd->key, key) == 0) return hd;
- work = work->next;
- }
- return NULL;
-}
-
-const gchar *history_list_find_last_path_by_key(const gchar *key)
-{
- HistoryData *hd;
-
- hd = history_list_find_by_key(key);
- if (!hd || !hd->list) return NULL;
-
- return hd->list->data;
-}
-
-void history_list_free_key(const gchar *key)
-{
- HistoryData *hd;
- hd = history_list_find_by_key(key);
- if (!hd) return;
-
- history_list = g_list_remove(history_list, hd);
- history_list_free(hd);
-}
-
-void history_list_add_to_key(const gchar *key, const gchar *path, gint max)
-{
- HistoryData *hd;
- GList *work;
-
- if (!key || !path) return;
-
- hd = history_list_find_by_key(key);
- if (!hd)
- {
- hd = g_new(HistoryData, 1);
- hd->key = g_strdup(key);
- hd->list = NULL;
- history_list = g_list_prepend(history_list, hd);
- }
-
- /* if already in the list, simply move it to the top */
- work = hd->list;
- while (work)
- {
- gchar *buf = work->data;
-
- if (strcmp(buf, path) == 0)
- {
- /* if not first, move it */
- if (work != hd->list)
- {
- hd->list = g_list_remove(hd->list, buf);
- hd->list = g_list_prepend(hd->list, buf);
- }
- return;
- }
- work = work->next;
- }
-
- hd->list = g_list_prepend(hd->list, g_strdup(path));
-
- if (max == -1) max = options->open_recent_list_maxsize;
- if (max > 0)
- {
- gint len = 0;
- GList *work = hd->list;
- GList *last = NULL;
-
- while (work)
- {
- len++;
- last = work;
- work = work->next;
- }
-
- work = last;
- while (work && len > max)
- {
- GList *node = work;
- work = work->prev;
-
- g_free(node->data);
- hd->list = g_list_delete_link(hd->list, node);
- len--;
- }
- }
-}
-
-void history_list_item_change(const gchar *key, const gchar *oldpath, const gchar *newpath)
-{
- HistoryData *hd;
- GList *work;
-
- if (!oldpath) return;
- hd = history_list_find_by_key(key);
- if (!hd) return;
-
- work = hd->list;
- while (work)
- {
- gchar *buf = work->data;
- if (strcmp(buf, oldpath) == 0)
- {
- if (newpath)
- {
- work->data = g_strdup(newpath);
- }
- else
- {
- hd->list = g_list_remove(hd->list, buf);
- }
- g_free(buf);
- return;
- }
- work = work->next;
- }
-}
-
-void history_list_item_move(const gchar *key, const gchar *path, gint direction)
-{
- HistoryData *hd;
- GList *work;
- gint p = 0;
-
- if (!path) return;
- hd = history_list_find_by_key(key);
- if (!hd) return;
-
- work = hd->list;
- while (work)
- {
- gchar *buf = work->data;
- if (strcmp(buf, path) == 0)
- {
- p += direction;
- if (p < 0) return;
- hd->list = g_list_remove(hd->list, buf);
- hd->list = g_list_insert(hd->list, buf, p);
- return;
- }
- work = work->next;
- p++;
- }
-}
-
-void history_list_item_remove(const gchar *key, const gchar *path)
-{
- history_list_item_change(key, path, NULL);
-}
-
-GList *history_list_get_by_key(const gchar *key)
-{
- HistoryData *hd;
-
- hd = history_list_find_by_key(key);
- if (!hd) return NULL;
-
- return hd->list;
-}
-
-/**
- * @brief Get image last viewed in a folder
- * @param path Must be a folder
- * @returns Last image viewed in folder or NULL
- *
- * Returned string should be freed
- */
-gchar *get_recent_viewed_folder_image(gchar *path)
-{
- HistoryData *hd;
- GList *work;
- gchar *dirname;
- gchar *ret = NULL;
-
- if (options->recent_folder_image_list_maxsize == 0)
- {
- return NULL;
- }
-
- hd = history_list_find_by_key("image_list");
-
- if (!hd)
- {
- hd = g_new(HistoryData, 1);
- hd->key = g_strdup("image_list");
- hd->list = NULL;
- history_list = g_list_prepend(history_list, hd);
- }
-
- work = hd->list;
-
- while (work)
- {
- dirname = g_path_get_dirname(work->data);
-
- if (g_strcmp0(dirname, path) == 0)
- {
- if (isfile(work->data))
- {
- ret = g_strdup(work->data);
- }
- g_free(dirname);
- break;
- }
-
- g_free(dirname);
- work = work->next;
- }
-
- return ret;
-}
-
-static void update_recent_viewed_folder_image_list(const gchar *path)
-{
- HistoryData *hd;
- GList *work;
- gchar *image_dir = NULL;
- gchar *list_dir = NULL;
- gboolean found = FALSE;
-
- if (options->recent_folder_image_list_maxsize == 0)
- {
- return;
- }
-
- image_dir = g_path_get_dirname(path);
- hd = history_list_find_by_key("image_list");
- if (!hd)
- {
- hd = g_new(HistoryData, 1);
- hd->key = g_strdup("image_list");
- hd->list = NULL;
- history_list = g_list_prepend(history_list, hd);
- }
-
- work = hd->list;
-
- while (work)
- {
- list_dir = g_path_get_dirname(work->data);
-
- /* If folder already in list, update and move to start of list */
- if (g_strcmp0(list_dir, image_dir) == 0)
- {
- g_free(work->data);
- work->data = g_strdup(path);
- hd->list = g_list_remove_link(hd->list, work);
- hd->list = g_list_concat(work, hd->list);
- found = TRUE;
- g_free(list_dir);
- break;
- }
- g_free(list_dir);
- work = work->next;
- }
-
- g_free(image_dir);
-
- if (!found)
- {
- hd->list = g_list_prepend(hd->list, g_strdup(path));
- }
-}
-/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */
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