nsxiv/main.c

259 lines
5.6 KiB
C

/* sxiv: main.c
* Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
*
* 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, 5th Floor, Boston, MA 02110-1301, USA.
*/
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include "events.h"
#include "image.h"
#include "options.h"
#include "thumbs.h"
#include "types.h"
#include "util.h"
#include "window.h"
enum {
TITLE_LEN = 256,
FNAME_CNT = 1024
};
appmode_t mode;
img_t img;
tns_t tns;
win_t win;
fileinfo_t *files;
int filecnt, fileidx;
size_t filesize;
char win_title[TITLE_LEN];
void cleanup() {
static int in = 0;
if (!in++) {
img_close(&img, 0);
tns_free(&tns);
win_close(&win);
}
}
void check_add_file(char *filename) {
if (!filename || !*filename)
return;
if (access(filename, R_OK)) {
warn("could not open file: %s", filename);
return;
}
if (fileidx == filecnt) {
filecnt *= 2;
files = (fileinfo_t*) s_realloc(files, filecnt * sizeof(fileinfo_t));
}
if (*filename != '/') {
files[fileidx].path = absolute_path(filename);
if (!files[fileidx].path) {
warn("could not get absolute path of file: %s\n", filename);
return;
}
}
files[fileidx].name = s_strdup(filename);
if (*filename == '/')
files[fileidx].path = files[fileidx].name;
fileidx++;
}
void remove_file(int n, unsigned char silent) {
if (n < 0 || n >= filecnt)
return;
if (filecnt == 1) {
if (!silent)
fprintf(stderr, "sxiv: no more files to display, aborting\n");
cleanup();
exit(!silent);
}
if (n + 1 < filecnt) {
if (files[n].path != files[n].name)
free((void*) files[n].path);
free((void*) files[n].name);
memmove(files + n, files + n + 1, (filecnt - n - 1) * sizeof(fileinfo_t));
}
if (n + 1 < tns.cnt) {
memmove(tns.thumbs + n, tns.thumbs + n + 1, (tns.cnt - n - 1) *
sizeof(thumb_t));
memset(tns.thumbs + tns.cnt - 1, 0, sizeof(thumb_t));
}
filecnt--;
if (n < tns.cnt)
tns.cnt--;
}
void load_image(int new) {
struct stat fstats;
if (new < 0 || new >= filecnt)
return;
/* cursor is reset in redraw() */
win_set_cursor(&win, CURSOR_WATCH);
img_close(&img, 0);
while (!img_load(&img, &files[new])) {
remove_file(new, 0);
if (new >= filecnt)
new = filecnt - 1;
}
fileidx = new;
if (!stat(files[new].path, &fstats))
filesize = fstats.st_size;
else
filesize = 0;
}
void update_title() {
int n;
float size;
const char *unit;
if (mode == MODE_THUMB) {
n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] %s",
tns.cnt ? tns.sel + 1 : 0, tns.cnt,
tns.cnt ? files[tns.sel].name : "");
} else {
size = filesize;
size_readable(&size, &unit);
n = snprintf(win_title, TITLE_LEN,
"sxiv: [%d/%d] <%d%%> <%dx%d> (%.2f%s) %s",
fileidx + 1, filecnt, (int) (img.zoom * 100.0), img.w, img.h,
size, unit, files[fileidx].name);
}
if (n >= TITLE_LEN) {
for (n = 0; n < 3; n++)
win_title[TITLE_LEN - n - 2] = '.';
}
win_set_title(&win, win_title);
}
int fncmp(const void *a, const void *b) {
return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
}
int main(int argc, char **argv) {
int i, len, start;
size_t n;
char *filename;
struct stat fstats;
r_dir_t dir;
parse_options(argc, argv);
if (options->clean_cache) {
tns_init(&tns, 0);
tns_clean_cache(&tns);
exit(0);
}
if (!options->filecnt) {
print_usage();
exit(1);
}
if (options->recursive || options->from_stdin)
filecnt = FNAME_CNT;
else
filecnt = options->filecnt;
files = (fileinfo_t*) s_malloc(filecnt * sizeof(fileinfo_t));
fileidx = 0;
/* build file list: */
if (options->from_stdin) {
filename = NULL;
while ((len = getline(&filename, &n, stdin)) > 0) {
if (filename[len-1] == '\n')
filename[len-1] = '\0';
check_add_file(filename);
}
} else {
for (i = 0; i < options->filecnt; i++) {
filename = options->filenames[i];
if (stat(filename, &fstats) || !S_ISDIR(fstats.st_mode)) {
check_add_file(filename);
} else {
if (!options->recursive) {
warn("ignoring directory: %s", filename);
continue;
}
if (r_opendir(&dir, filename)) {
warn("could not open directory: %s", filename);
continue;
}
start = fileidx;
printf("reading dir: %s\n", filename);
while ((filename = r_readdir(&dir))) {
check_add_file(filename);
free((void*) filename);
}
r_closedir(&dir);
if (fileidx - start > 1)
qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
}
}
}
if (!fileidx) {
fprintf(stderr, "sxiv: no valid image file given, aborting\n");
exit(1);
}
filecnt = fileidx;
fileidx = options->startnum < filecnt ? options->startnum : 0;
win_init(&win);
img_init(&img, &win);
if (options->thumbnails) {
mode = MODE_THUMB;
tns_init(&tns, filecnt);
while (!tns_load(&tns, 0, &files[0], False, False))
remove_file(0, 0);
tns.cnt = 1;
} else {
mode = MODE_IMAGE;
tns.thumbs = NULL;
load_image(fileidx);
}
win_open(&win);
run();
cleanup();
return 0;
}