nsxiv/main.c

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/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
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#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
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#include "events.h"
#include "image.h"
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#include "options.h"
#include "thumbs.h"
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#include "util.h"
#include "window.h"
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enum {
TITLE_LEN = 256,
FNAME_CNT = 1024
};
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appmode_t mode;
img_t img;
tns_t tns;
win_t win;
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char **filenames;
int filecnt, fileidx;
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size_t filesize;
char win_title[TITLE_LEN];
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void cleanup() {
static int in = 0;
if (!in++) {
img_close(&img, 0);
tns_free(&tns);
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win_close(&win);
}
}
int check_add_file(char *filename) {
if (!filename)
return 0;
if (access(filename, R_OK)) {
warn("could not open file: %s", filename);
return 0;
} else {
if (fileidx == filecnt) {
filecnt *= 2;
filenames = (char**) s_realloc(filenames, filecnt * sizeof(char*));
}
filenames[fileidx++] = filename;
return 1;
}
}
void remove_file(int n, unsigned char silent) {
if (n < 0 || n >= filecnt)
return;
if (filecnt == 1) {
if (!silent)
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fprintf(stderr, "sxiv: no more files to display, aborting\n");
cleanup();
exit(!silent);
}
if (n + 1 < filecnt)
memmove(filenames + n, filenames + n + 1, (filecnt - n - 1) *
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sizeof(char*));
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) {
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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, filenames[new])) {
remove_file(new, 0);
if (new >= filecnt)
new = filecnt - 1;
}
fileidx = new;
if (!stat(filenames[new], &fstats))
filesize = fstats.st_size;
else
filesize = 0;
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}
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void update_title() {
int n;
float size;
const char *unit;
if (mode == MODE_THUMBS) {
n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] %s",
tns.cnt ? tns.sel + 1 : 0, tns.cnt,
tns.cnt ? filenames[tns.sel] : "");
} else {
size = filesize;
size_readable(&size, &unit);
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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, filenames[fileidx]);
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}
if (n >= TITLE_LEN) {
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for (n = 0; n < 3; n++)
win_title[TITLE_LEN - n - 2] = '.';
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}
win_set_title(&win, win_title);
}
int fncmp(const void *a, const void *b) {
return strcoll(*((char* const*) a), *((char* const*) b));
}
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int main(int argc, char **argv) {
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int i, len, start;
size_t n;
char *filename = NULL;
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struct stat fstats;
r_dir_t dir;
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parse_options(argc, argv);
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if (options->clean_cache) {
tns_init(&tns, 0);
tns_clean_cache(&tns);
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exit(0);
}
if (!options->filecnt) {
print_usage();
exit(1);
}
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if (options->recursive || options->from_stdin)
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filecnt = FNAME_CNT;
else
filecnt = options->filecnt;
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filenames = (char**) s_malloc(filecnt * sizeof(char*));
fileidx = 0;
/* build file list: */
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if (options->from_stdin) {
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while ((len = getline(&filename, &n, stdin)) > 0) {
if (filename[len-1] == '\n')
filename[len-1] = '\0';
if (!*filename || !check_add_file(filename))
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free(filename);
filename = NULL;
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}
} else {
for (i = 0; i < options->filecnt; i++) {
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filename = options->filenames[i];
if (stat(filename, &fstats) || !S_ISDIR(fstats.st_mode)) {
check_add_file(filename);
} else {
if (!options->recursive) {
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warn("ignoring directory: %s", filename);
continue;
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}
if (r_opendir(&dir, filename)) {
warn("could not open directory: %s", filename);
continue;
}
start = fileidx;
while ((filename = r_readdir(&dir))) {
if (!check_add_file(filename))
free((void*) filename);
}
r_closedir(&dir);
if (fileidx - start > 1)
qsort(filenames + start, fileidx - start, sizeof(char*), fncmp);
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}
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}
}
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if (!fileidx) {
fprintf(stderr, "sxiv: no valid image file given, aborting\n");
exit(1);
}
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filecnt = fileidx;
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fileidx = options->startnum < filecnt ? options->startnum : 0;
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win_init(&win);
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img_init(&img, &win);
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if (options->thumbnails) {
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mode = MODE_THUMBS;
tns_init(&tns, filecnt);
while (!tns_load(&tns, 0, filenames[0], 0))
remove_file(0, 0);
tns.cnt = 1;
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} else {
mode = MODE_NORMAL;
tns.thumbs = NULL;
load_image(fileidx);
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}
win_open(&win);
run();
cleanup();
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return 0;
}