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Write thumbnail cache files on exit

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1 parent 83bdf67 commit c21a3e3f28a5c45497d09ab27d71538b983ca535 @muennich committed Apr 7, 2011
Showing with 155 additions and 1 deletion.
  1. +69 −0 thumbs.c
  2. +79 −1 util.c
  3. +7 −0 util.h
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69 thumbs.c
@@ -18,6 +18,7 @@
#include <stdlib.h>
#include <string.h>
+#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
@@ -292,6 +293,9 @@ int tns_translate(tns_t *tns, int x, int y) {
return -1;
}
+
+/* thumbnail caching */
+
int tns_cache_enabled() {
int len, ret = 0;
char *cpath, *homedir;
@@ -309,5 +313,70 @@ int tns_cache_enabled() {
return ret;
}
+char* tns_cache_filename(const char *filename) {
+ size_t len;
+ int i;
+ char *cfile, *abspath, *homedir;
+
+ if (!filename)
+ return NULL;
+ if (!(homedir = getenv("HOME")))
+ return NULL;
+
+ if (*filename != '/') {
+ if (!(abspath = absolute_path(filename)))
+ return NULL;
+ } else {
+ abspath = (char*) s_malloc(strlen(filename) + 1);
+ strcpy(abspath, filename);
+ }
+
+ len = strlen(abspath);
+ for (i = 1; i < len; ++i) {
+ if (abspath[i] == '/')
+ abspath[i] = '%';
+ }
+
+ len += strlen(homedir) + 15;
+ cfile = (char*) s_malloc(len);
+ snprintf(cfile, len, "%s/.sxiv/%s.png", homedir, abspath + 1);
+
+ free(abspath);
+
+ return cfile;
+}
+
void tns_cache_write(thumb_t *t, Bool force) {
+ char *cfile;
+ struct stat cstats, fstats;
+ struct timeval times[2];
+ Imlib_Load_Error err;
+
+ if (!t || !t->im || !t->filename)
+ return;
+
+ if ((cfile = tns_cache_filename(t->filename))) {
+ if (stat(t->filename, &fstats))
+ goto end;
+
+ if (force || stat(cfile, &cstats) ||
+ cstats.st_mtim.tv_sec != fstats.st_mtim.tv_sec ||
+ cstats.st_mtim.tv_nsec != fstats.st_mtim.tv_nsec)
+ {
+ imlib_context_set_image(t->im);
+ imlib_image_set_format("png");
+ imlib_save_image_with_error_return(cfile, &err);
+
+ if (err) {
+ warn("could not cache thumbnail:", t->filename);
+ } else {
+ TIMESPEC_TO_TIMEVAL(&times[0], &fstats.st_atim);
+ TIMESPEC_TO_TIMEVAL(&times[1], &fstats.st_mtim);
+ utimes(cfile, times);
+ }
+ }
+ }
+
+end:
+ free(cfile);
}
View
80 util.c
@@ -18,11 +18,13 @@
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
+#include <errno.h>
#include "options.h"
#include "util.h"
-#define FNAME_LEN 512
+#define FNAME_LEN 1024
void cleanup();
@@ -78,6 +80,82 @@ void size_readable(float *size, const char **unit) {
*unit = units[MIN(i, LEN(units) - 1)];
}
+char* absolute_path(const char *filename) {
+ size_t len;
+ char *path = NULL;
+ const char *basename;
+ char *dirname = NULL;
+ char *cwd = NULL;
+ char *twd = NULL;
+ char *dir;
+ char *s;
+
+ if (!filename || *filename == '\0' || *filename == '/')
+ return NULL;
+
+ len = FNAME_LEN;
+ cwd = (char*) s_malloc(len);
+ while (!(s = getcwd(cwd, len)) && errno == ERANGE) {
+ len *= 2;
+ cwd = (char*) s_realloc(cwd, len);
+ }
+ if (!s)
+ goto error;
+
+ s = strrchr(filename, '/');
+ if (s) {
+ len = s - filename;
+ dirname = (char*) s_malloc(len + 1);
+ strncpy(dirname, filename, len);
+ dirname[len] = '\0';
+ basename = s + 1;
+
+ if (chdir(cwd))
+ /* we're not able to come back afterwards */
+ goto error;
+ if (chdir(dirname))
+ goto error;
+
+ len = FNAME_LEN;
+ twd = (char*) s_malloc(len);
+ while (!(s = getcwd(twd, len)) && errno == ERANGE) {
+ len *= 2;
+ twd = (char*) s_realloc(twd, len);
+ }
+ if (chdir(cwd))
+ die("could not revert to working directory");
+ if (!s)
+ goto error;
+ dir = twd;
+ } else {
+ /* only a single filename given */
+ basename = filename;
+ dir = cwd;
+ }
+
+ len = strlen(dir) + strlen(basename) + 2;
+ path = (char*) s_malloc(len);
+ snprintf(path, len, "%s/%s", dir, basename);
+
+goto end;
+
+error:
+ if (path) {
+ free(path);
+ path = NULL;
+ }
+
+end:
+ if (dirname)
+ free(dirname);
+ if (cwd)
+ free(cwd);
+ if (twd)
+ free(twd);
+
+ return path;
+}
+
char* readline(FILE *stream) {
size_t len;
char *buf, *s, *end;
View
7 util.h
@@ -30,6 +30,11 @@
#define TV_TO_DOUBLE(x) ((double) ((x).tv_sec) + 0.000001 * \
(double) ((x).tv_usec))
+#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
+ (tv)->tv_sec = (ts)->tv_sec; \
+ (tv)->tv_usec = (ts)->tv_nsec / 1000; \
+}
+
void* s_malloc(size_t);
void* s_realloc(void*, size_t);
@@ -38,6 +43,8 @@ void die(const char*, ...);
void size_readable(float*, const char**);
+char* absolute_path(const char*);
+
char* readline(FILE*);
#endif /* UTIL_H */

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