+++ /dev/null
-/*
- * Geeqie
- * (C) 2004 John Ellis
- *
- * Author: John Ellis
- *
- * This software is released under the GNU General Public License (GNU GPL).
- * Please read the included file COPYING for more information.
- * This software comes with no warranty of any kind, use at your own risk!
- */
-
-#include "main.h"
-#include "cache.h"
-
-#include "md5-util.h"
-#include "ui_fileops.h"
-
-#include <utime.h>
-#include <errno.h>
-
-
-/*
- *-------------------------------------------------------------------
- * Cache data file format:
- *-------------------------------------------------------------------
- *
- * SIMcache
- * #coment
- * Dimensions=[<width> x <height>]
- * Date=[<value in time_t format, or -1 if no embedded date>]
- * Checksum=[<value>]
- * MD5sum=[<32 character ascii text digest>]
- * SimilarityGrid[32 x 32]=<3072 bytes of data (1024 pixels in RGB format, 1 pixel is 24bits)>
- *
- *
- * The first line (9 bytes) indicates it is a SIMcache format file. (new line char must exist)
- * Comment lines starting with a # are ignored up to a new line.
- * All data lines should end with a new line char.
- * Format is very strict, data must begin with the char immediately following '='.
- * Currently SimilarityGrid is always assumed to be 32 x 32 RGB.
- */
-
-
-/*
- *-------------------------------------------------------------------
- * sim cache data
- *-------------------------------------------------------------------
- */
-
-CacheData *cache_sim_data_new(void)
-{
- CacheData *cd;
-
- cd = g_new0(CacheData, 1);
- cd->date = -1;
-
- return cd;
-}
-
-void cache_sim_data_free(CacheData *cd)
-{
- if (!cd) return;
-
- g_free(cd->path);
- image_sim_free(cd->sim);
- g_free(cd);
-}
-
-/*
- *-------------------------------------------------------------------
- * sim cache write
- *-------------------------------------------------------------------
- */
-
-static gint cache_sim_write_dimensions(FILE *f, CacheData *cd)
-{
- if (!f || !cd || !cd->dimensions) return FALSE;
-
- fprintf(f, "Dimensions=[%d x %d]\n", cd->width, cd->height);
-
- return TRUE;
-}
-
-static gint cache_sim_write_date(FILE *f, CacheData *cd)
-{
- if (!f || !cd || !cd->have_date) return FALSE;
-
- fprintf(f, "Date=[%ld]\n", cd->date);
-
- return TRUE;
-}
-
-static gint cache_sim_write_checksum(FILE *f, CacheData *cd)
-{
- if (!f || !cd || !cd->have_checksum) return FALSE;
-
- fprintf(f, "Checksum=[%ld]\n", cd->checksum);
-
- return TRUE;
-}
-
-static gint cache_sim_write_md5sum(FILE *f, CacheData *cd)
-{
- gchar *text;
-
- if (!f || !cd || !cd->have_md5sum) return FALSE;
-
- text = md5_digest_to_text(cd->md5sum);
- fprintf(f, "MD5sum=[%s]\n", text);
- g_free(text);
-
- return TRUE;
-}
-
-static gint cache_sim_write_similarity(FILE *f, CacheData *cd)
-{
- gint success = FALSE;
-
- if (!f || !cd || !cd->similarity) return FALSE;
-
- if (cd->sim && cd->sim->filled)
- {
- gint x, y;
- guint8 buf[96];
-
- fprintf(f, "SimilarityGrid[32 x 32]=");
- for (y = 0; y < 32; y++)
- {
- gint s;
- guint8 *p;
-
- s = y * 32;
- p = buf;
- for(x = 0; x < 32; x++)
- {
- *p = cd->sim->avg_r[s + x]; p++;
- *p = cd->sim->avg_g[s + x]; p++;
- *p = cd->sim->avg_b[s + x]; p++;
- }
- fwrite(buf, sizeof(buf), 1, f);
- }
-
- fprintf(f, "\n");
- success = TRUE;
- }
-
- return success;
-}
-
-gint cache_sim_data_save(CacheData *cd)
-{
- FILE *f;
- gchar *pathl;
-
- if (!cd || !cd->path) return FALSE;
-
- pathl = path_from_utf8(cd->path);
- f = fopen(pathl, "w");
- g_free(pathl);
-
- if (!f)
- {
- printf("Unable to save sim cache data: %s\n", cd->path);
- return FALSE;
- }
-
- fprintf(f, "SIMcache\n#%s %s\n", PACKAGE, VERSION);
- cache_sim_write_dimensions(f, cd);
- cache_sim_write_date(f, cd);
- cache_sim_write_checksum(f, cd);
- cache_sim_write_md5sum(f, cd);
- cache_sim_write_similarity(f, cd);
-
- fclose (f);
-
- return TRUE;
-}
-
-/*
- *-------------------------------------------------------------------
- * sim cache read
- *-------------------------------------------------------------------
- */
-
-static gint cache_sim_read_skipline(FILE *f, int s)
-{
- if (!f) return FALSE;
-
- if (fseek(f, 0 - s, SEEK_CUR) == 0)
- {
- char b;
- while (fread(&b, sizeof(b), 1, f) == 1)
- {
- if (b == '\n') return TRUE;
- }
- return TRUE;
- }
-
- return FALSE;
-}
-
-static gint cache_sim_read_comment(FILE *f, char *buf, int s, CacheData *cd)
-{
- if (!f || !buf || !cd) return FALSE;
-
- if (s < 1 || buf[0] != '#') return FALSE;
-
- return cache_sim_read_skipline(f, s - 1);
-}
-
-static gint cache_sim_read_dimensions(FILE *f, char *buf, int s, CacheData *cd)
-{
- if (!f || !buf || !cd) return FALSE;
-
- if (s < 10 || strncmp("Dimensions", buf, 10) != 0) return FALSE;
-
- if (fseek(f, - s, SEEK_CUR) == 0)
- {
- char b;
- char buf[1024];
- gint p = 0;
- gint w, h;
-
- b = 'X';
- while (b != '[')
- {
- if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
- }
- while (b != ']' && p < 1023)
- {
- if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
- buf[p] = b;
- p++;
- }
-
- while (b != '\n')
- {
- if (fread(&b, sizeof(b), 1, f) != 1) break;
- }
-
- buf[p] = '\0';
- if (sscanf(buf, "%d x %d", &w, &h) != 2) return FALSE;
-
- cd->width = w;
- cd->height = h;
- cd->dimensions = TRUE;
-
- return TRUE;
- }
-
- return FALSE;
-}
-
-static gint cache_sim_read_date(FILE *f, char *buf, int s, CacheData *cd)
-{
- if (!f || !buf || !cd) return FALSE;
-
- if (s < 4 || strncmp("Date", buf, 4) != 0) return FALSE;
-
- if (fseek(f, - s, SEEK_CUR) == 0)
- {
- char b;
- char buf[1024];
- gint p = 0;
-
- b = 'X';
- while (b != '[')
- {
- if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
- }
- while (b != ']' && p < 1023)
- {
- if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
- buf[p] = b;
- p++;
- }
-
- while (b != '\n')
- {
- if (fread(&b, sizeof(b), 1, f) != 1) break;
- }
-
- buf[p] = '\0';
- cd->date = strtol(buf, NULL, 10);
-
- cd->have_date = TRUE;
-
- return TRUE;
- }
-
- return FALSE;
-}
-
-static gint cache_sim_read_checksum(FILE *f, char *buf, int s, CacheData *cd)
-{
- if (!f || !buf || !cd) return FALSE;
-
- if (s < 8 || strncmp("Checksum", buf, 8) != 0) return FALSE;
-
- if (fseek(f, - s, SEEK_CUR) == 0)
- {
- char b;
- char buf[1024];
- gint p = 0;
-
- b = 'X';
- while (b != '[')
- {
- if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
- }
- while (b != ']' && p < 1023)
- {
- if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
- buf[p] = b;
- p++;
- }
-
- while (b != '\n')
- {
- if (fread(&b, sizeof(b), 1, f) != 1) break;
- }
-
- buf[p] = '\0';
- cd->checksum = strtol(buf, NULL, 10);
-
- cd->have_checksum = TRUE;
-
- return TRUE;
- }
-
- return FALSE;
-}
-
-static gint cache_sim_read_md5sum(FILE *f, char *buf, int s, CacheData *cd)
-{
- if (!f || !buf || !cd) return FALSE;
-
- if (s < 8 || strncmp("MD5sum", buf, 6) != 0) return FALSE;
-
- if (fseek(f, - s, SEEK_CUR) == 0)
- {
- char b;
- char buf[64];
- gint p = 0;
-
- b = 'X';
- while (b != '[')
- {
- if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
- }
- while (b != ']' && p < 63)
- {
- if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
- buf[p] = b;
- p++;
- }
- while (b != '\n')
- {
- if (fread(&b, sizeof(b), 1, f) != 1) break;
- }
-
- buf[p] = '\0';
- cd->have_md5sum = md5_digest_from_text(buf, cd->md5sum);
-
- return TRUE;
- }
-
- return FALSE;
-}
-
-static gint cache_sim_read_similarity(FILE *f, char *buf, int s, CacheData *cd)
-{
- if (!f || !buf || !cd) return FALSE;
-
- if (s < 11 || strncmp("Similarity", buf, 10) != 0) return FALSE;
-
- if (strncmp("Grid[32 x 32]", buf + 10, 13) != 0) return FALSE;
-
- if (fseek(f, - s, SEEK_CUR) == 0)
- {
- char b;
- guint8 pixel_buf[3];
- ImageSimilarityData *sd;
- gint x, y;
-
- b = 'X';
- while (b != '=')
- {
- if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
- }
-
- if (cd->sim)
- {
- /* use current sim that may already contain data we will not touch here */
- sd = cd->sim;
- cd->sim = NULL;
- cd->similarity = FALSE;
- }
- else
- {
- sd = image_sim_new();
- }
-
- for (y = 0; y < 32; y++)
- {
- gint s = y * 32;
- for (x = 0; x < 32; x++)
- {
- if (fread(&pixel_buf, sizeof(pixel_buf), 1, f) != 1)
- {
- image_sim_free(sd);
- return FALSE;
- }
- sd->avg_r[s + x] = pixel_buf[0];
- sd->avg_g[s + x] = pixel_buf[1];
- sd->avg_b[s + x] = pixel_buf[2];
- }
- }
-
- if (fread(&b, sizeof(b), 1, f) == 1)
- {
- if (b != '\n') fseek(f, -1, SEEK_CUR);
- }
-
- cd->sim = sd;
- cd->sim->filled = TRUE;
- cd->similarity = TRUE;
-
- return TRUE;
- }
-
- return FALSE;
-}
-
-#define CACHE_LOAD_LINE_NOISE 8
-
-CacheData *cache_sim_data_load(const gchar *path)
-{
- FILE *f;
- CacheData *cd = NULL;
- char buf[32];
- gint success = CACHE_LOAD_LINE_NOISE;
- gchar *pathl;
-
- if (!path) return NULL;
-
- pathl = path_from_utf8(path);
- f = fopen(pathl, "r");
- g_free(pathl);
-
- if (!f) return NULL;
-
- cd = cache_sim_data_new();
- cd->path = g_strdup(path);
-
- if (fread(&buf, sizeof(char), 9, f) != 9 ||
- strncmp(buf, "SIMcache", 8) != 0)
- {
- if (debug) printf("%s is not a cache file\n", cd->path);
- success = 0;
- }
-
- while (success > 0)
- {
- int s;
- s = fread(&buf, sizeof(char), sizeof(buf), f);
-
- if (s < 1)
- {
- success = 0;
- }
- else
- {
- if (!cache_sim_read_comment(f, buf, s, cd) &&
- !cache_sim_read_dimensions(f, buf, s, cd) &&
- !cache_sim_read_date(f, buf, s, cd) &&
- !cache_sim_read_checksum(f, buf, s, cd) &&
- !cache_sim_read_md5sum(f, buf, s, cd) &&
- !cache_sim_read_similarity(f, buf, s, cd))
- {
- if (!cache_sim_read_skipline(f, s))
- {
- success = 0;
- }
- else
- {
- success--;
- }
- }
- else
- {
- success = CACHE_LOAD_LINE_NOISE;
- }
- }
- }
-
- fclose(f);
-
- if (!cd->dimensions &&
- !cd->have_date &&
- !cd->have_checksum &&
- !cd->have_md5sum &&
- !cd->similarity)
- {
- cache_sim_data_free(cd);
- cd = NULL;
- }
-
- return cd;
-}
-
-/*
- *-------------------------------------------------------------------
- * sim cache setting
- *-------------------------------------------------------------------
- */
-
-void cache_sim_data_set_dimensions(CacheData *cd, gint w, gint h)
-{
- if (!cd) return;
-
- cd->width = w;
- cd->height = h;
- cd->dimensions = TRUE;
-}
-
-void cache_sim_data_set_date(CacheData *cd, time_t date)
-{
- if (!cd) return;
-
- cd->date = date;
- cd->have_date = TRUE;
-}
-
-void cache_sim_data_set_checksum(CacheData *cd, long checksum)
-{
- if (!cd) return;
-
- cd->checksum = checksum;
- cd->have_checksum = TRUE;
-}
-
-void cache_sim_data_set_md5sum(CacheData *cd, guchar digest[16])
-{
- gint i;
-
- if (!cd) return;
-
- for (i = 0; i < 16; i++)
- {
- cd->md5sum[i] = digest[i];
- }
- cd->have_md5sum = TRUE;
-}
-
-void cache_sim_data_set_similarity(CacheData *cd, ImageSimilarityData *sd)
-{
- if (!cd || !sd || !sd->filled) return;
-
- if (!cd->sim) cd->sim = image_sim_new();
-
- memcpy(cd->sim->avg_r, sd->avg_r, 1024);
- memcpy(cd->sim->avg_g, sd->avg_g, 1024);
- memcpy(cd->sim->avg_b, sd->avg_b, 1024);
- cd->sim->filled = TRUE;
-
- cd->similarity = TRUE;
-}
-
-gint cache_sim_data_filled(ImageSimilarityData *sd)
-{
- if (!sd) return FALSE;
- return sd->filled;
-}
-
-/*
- *-------------------------------------------------------------------
- * cache path location utils
- *-------------------------------------------------------------------
- */
-
-/* warning: this func modifies path string contents!, on fail it is set to fail point */
-gint cache_ensure_dir_exists(gchar *path, mode_t mode)
-{
- if (!path) return FALSE;
-
- if (!isdir(path))
- {
- gchar *p = path;
- while (p[0] != '\0')
- {
- p++;
- if (p[0] == '/' || p[0] == '\0')
- {
- gint end = TRUE;
- if (p[0] != '\0')
- {
- p[0] = '\0';
- end = FALSE;
- }
- if (!isdir(path))
- {
- if (debug) printf("creating sub dir:%s\n", path);
- if (!mkdir_utf8(path, mode))
- {
- printf("create dir failed: %s\n", path);
- return FALSE;
- }
- }
- if (!end) p[0] = '/';
- }
- }
- }
- return TRUE;
-}
-
-static void cache_path_parts(CacheType type,
- const gchar **cache_rc, const gchar **cache_local, const gchar **cache_ext)
-{
- switch (type)
- {
- case CACHE_TYPE_THUMB:
- *cache_rc = GQ_CACHE_RC_THUMB;
- *cache_local = GQ_CACHE_LOCAL_THUMB;
- *cache_ext = GQ_CACHE_EXT_THUMB;
- break;
- case CACHE_TYPE_SIM:
- *cache_rc = GQ_CACHE_RC_THUMB;
- *cache_local = GQ_CACHE_LOCAL_THUMB;
- *cache_ext = GQ_CACHE_EXT_SIM;
- break;
- case CACHE_TYPE_METADATA:
- *cache_rc = GQ_CACHE_RC_METADATA;
- *cache_local = GQ_CACHE_LOCAL_METADATA;
- *cache_ext = GQ_CACHE_EXT_METADATA;
- break;
- }
-}
-
-gchar *cache_get_location(CacheType type, const gchar *source, gint include_name, mode_t *mode)
-{
- gchar *path = NULL;
- gchar *base;
- gchar *name = NULL;
- const gchar *cache_rc;
- const gchar *cache_local;
- const gchar *cache_ext;
-
- if (!source) return NULL;
-
- cache_path_parts(type, &cache_rc, &cache_local, &cache_ext);
-
- base = remove_level_from_path(source);
- if (include_name)
- {
- name = g_strconcat("/", filename_from_path(source), NULL);
- }
- else
- {
- cache_ext = NULL;
- }
-
- if (((type != CACHE_TYPE_METADATA && options->thumbnails.cache_into_dirs) ||
- (type == CACHE_TYPE_METADATA && options->enable_metadata_dirs)) &&
- access_file(base, W_OK))
- {
- path = g_strconcat(base, "/", cache_local, name, cache_ext, NULL);
- if (mode) *mode = 0775;
- }
-
- if (!path)
- {
- path = g_strconcat(homedir(), "/", cache_rc, base, name, cache_ext, NULL);
- if (mode) *mode = 0755;
- }
-
- g_free(base);
- if (name) g_free(name);
-
- return path;
-}
-
-gchar *cache_find_location(CacheType type, const gchar *source)
-{
- gchar *path;
- const gchar *name;
- gchar *base;
- const gchar *cache_rc;
- const gchar *cache_local;
- const gchar *cache_ext;
- gint prefer_local;
-
- if (!source) return NULL;
-
- cache_path_parts(type, &cache_rc, &cache_local, &cache_ext);
-
- name = filename_from_path(source);
- base = remove_level_from_path(source);
-
- if (type == CACHE_TYPE_METADATA)
- {
- prefer_local = options->enable_metadata_dirs;
- }
- else
- {
- prefer_local = options->thumbnails.cache_into_dirs;
- }
-
- if (prefer_local)
- {
- path = g_strconcat(base, "/", cache_local, "/", name, cache_ext, NULL);
- }
- else
- {
- path = g_strconcat(homedir(), "/", cache_rc, source, cache_ext, NULL);
- }
-
- if (!isfile(path))
- {
- g_free(path);
-
- /* try the opposite method if not found */
- if (!prefer_local)
- {
- path = g_strconcat(base, "/", cache_local, "/", name, cache_ext, NULL);
- }
- else
- {
- path = g_strconcat(homedir(), "/", cache_rc, source, cache_ext, NULL);
- }
-
- if (!isfile(path))
- {
- g_free(path);
- path = NULL;
- }
- }
-
- g_free(base);
-
- return path;
-}
-
-gint cache_time_valid(const gchar *cache, const gchar *path)
-{
- struct stat cache_st;
- struct stat path_st;
- gchar *cachel;
- gchar *pathl;
- gint ret = FALSE;
-
- if (!cache || !path) return FALSE;
-
- cachel = path_from_utf8(cache);
- pathl = path_from_utf8(path);
-
- if (stat(cachel, &cache_st) == 0 &&
- stat(pathl, &path_st) == 0)
- {
- if (cache_st.st_mtime == path_st.st_mtime)
- {
- ret = TRUE;
- }
- else if (cache_st.st_mtime > path_st.st_mtime)
- {
- struct utimbuf ut;
-
- ut.actime = ut.modtime = cache_st.st_mtime;
- if (utime(cachel, &ut) < 0 &&
- errno == EPERM)
- {
- if (debug) printf("cache permission workaround: %s\n", cachel);
- ret = TRUE;
- }
- }
- }
-
- g_free(pathl);
- g_free(cachel);
-
- return ret;
-}
-
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