Write thumbnail cache files on exit

This commit is contained in:
Bert 2011-04-07 14:33:57 +02:00
parent 83bdf67d51
commit c21a3e3f28
3 changed files with 156 additions and 2 deletions

View file

@ -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;
}
void tns_cache_write(thumb_t *t, Bool force) {
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);
}

80
util.c
View file

@ -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;

7
util.h
View file

@ -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 */