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-rw-r--r--main.c161
1 files changed, 106 insertions, 55 deletions
diff --git a/main.c b/main.c
index 9ff3c1e..e6d6700 100644
--- a/main.c
+++ b/main.c
@@ -22,10 +22,14 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
+#include <fcntl.h>
#include <unistd.h>
+#include <errno.h>
+#include <signal.h>
#include <sys/select.h>
#include <sys/stat.h>
#include <sys/time.h>
+#include <sys/wait.h>
#include <X11/keysym.h>
#include "types.h"
@@ -38,8 +42,6 @@
#include "config.h"
enum {
- BAR_L_LEN = 512,
- BAR_R_LEN = 64,
FILENAME_CNT = 1024,
TITLE_LEN = 256
};
@@ -70,12 +72,12 @@ int prefix;
bool resized = false;
const char * const INFO_SCRIPT = ".sxiv/exec/image-info";
-char *info_script;
-
struct {
- char l[BAR_L_LEN];
- char r[BAR_R_LEN];
-} bar;
+ char *script;
+ int fd;
+ unsigned int i, lastsep;
+ bool open;
+} info;
timeout_t timeouts[] = {
{ { 0, 0 }, false, redraw },
@@ -212,35 +214,69 @@ bool check_timeouts(struct timeval *t)
return tmin > 0;
}
+void open_info(void)
+{
+ static pid_t pid;
+ int pfd[2];
+
+ if (info.script == NULL || info.open || win.bar.h == 0)
+ return;
+ if (info.fd != -1) {
+ close(info.fd);
+ kill(pid, SIGTERM);
+ info.fd = -1;
+ }
+ win.bar.l[0] = '\0';
+
+ if (pipe(pfd) < 0)
+ return;
+ pid = fork();
+ if (pid > 0) {
+ close(pfd[1]);
+ fcntl(pfd[0], F_SETFL, O_NONBLOCK);
+ info.fd = pfd[0];
+ info.i = info.lastsep = 0;
+ info.open = true;
+ } else if (pid == 0) {
+ close(pfd[0]);
+ dup2(pfd[1], 1);
+ execl(info.script, info.script, files[fileidx].name, NULL);
+ warn("could not exec: %s", info.script);
+ exit(EXIT_FAILURE);
+ }
+}
+
void read_info(void)
{
- char cmd[4096];
- FILE *outp;
- int c, i = 0, n = sizeof(bar.l) - 1;
- bool lastsep = false;
-
- if (info_script != NULL) {
- snprintf(cmd, sizeof(cmd), "%s \"%s\"", info_script, files[fileidx].name);
- outp = popen(cmd, "r");
- if (outp == NULL)
+ ssize_t i, n;
+ char buf[BAR_L_LEN];
+
+ while (true) {
+ n = read(info.fd, buf, sizeof(buf));
+ if (n < 0 && errno == EAGAIN)
+ return;
+ else if (n == 0)
goto end;
- while (i < n && (c = fgetc(outp)) != EOF) {
- if (c == '\n') {
- if (!lastsep) {
- bar.l[i++] = ' ';
- lastsep = true;
+ for (i = 0; i < n; i++) {
+ if (buf[i] == '\n') {
+ if (info.lastsep == 0) {
+ win.bar.l[info.i++] = ' ';
+ info.lastsep = 1;
}
} else {
- bar.l[i++] = c;
- lastsep = false;
+ win.bar.l[info.i++] = buf[i];
+ info.lastsep = 0;
}
+ if (info.i + 1 == sizeof(win.bar.l))
+ goto end;
}
- pclose(outp);
}
end:
- if (lastsep)
- i--;
- bar.l[i] = '\0';
+ info.i -= info.lastsep;
+ win.bar.l[info.i] = '\0';
+ win_update_bar(&win);
+ info.fd = -1;
+ while (waitpid(-1, NULL, WNOHANG) > 0);
}
void load_image(int new)
@@ -261,7 +297,8 @@ void load_image(int new)
alternate = fileidx;
fileidx = new;
- read_info();
+ info.open = false;
+ open_info();
if (img.multi.cnt > 0 && img.multi.animate)
set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
@@ -271,51 +308,56 @@ void load_image(int new)
void update_info(void)
{
- unsigned int i, fn, fw, n, len = sizeof(bar.r);
int sel;
- char *t = bar.r, title[TITLE_LEN];
+ unsigned int i, fn, fw, n;
+ unsigned int llen = sizeof(win.bar.l), rlen = sizeof(win.bar.r);
+ char *lt = win.bar.l, *rt = win.bar.r, title[TITLE_LEN];
bool ow_info;
for (fw = 0, i = filecnt; i > 0; fw++, i /= 10);
sel = mode == MODE_IMAGE ? fileidx : tns.sel;
+ /* update window title */
if (mode == MODE_THUMB) {
win_set_title(&win, "sxiv");
+ } else {
+ snprintf(title, sizeof(title), "sxiv - %s", files[sel].name);
+ win_set_title(&win, title);
+ }
+ /* update bar contents */
+ if (win.bar.h == 0)
+ return;
+ if (mode == MODE_THUMB) {
if (tns.cnt == filecnt) {
- n = snprintf(t, len, "%0*d/%d", fw, sel + 1, filecnt);
+ n = snprintf(rt, rlen, "%0*d/%d", fw, sel + 1, filecnt);
ow_info = true;
} else {
- snprintf(bar.l, sizeof(bar.l), "Loading... %0*d/%d",
- fw, tns.cnt, filecnt);
- bar.r[0] = '\0';
+ snprintf(lt, llen, "Loading... %0*d/%d", fw, tns.cnt, filecnt);
+ rt[0] = '\0';
ow_info = false;
}
} else {
- snprintf(title, sizeof(title), "sxiv - %s", files[sel].name);
- win_set_title(&win, title);
-
- n = snprintf(t, len, "%3d%% ", (int) (img.zoom * 100.0));
+ n = snprintf(rt, rlen, "%3d%% | ", (int) (img.zoom * 100.0));
if (img.multi.cnt > 0) {
for (fn = 0, i = img.multi.cnt; i > 0; fn++, i /= 10);
- n += snprintf(t + n, len - n, "(%0*d/%d) ",
+ n += snprintf(rt + n, rlen - n, "%0*d/%d | ",
fn, img.multi.sel + 1, img.multi.cnt);
}
- n += snprintf(t + n, len - n, "%0*d/%d", fw, sel + 1, filecnt);
- ow_info = bar.l[0] == '\0';
+ n += snprintf(rt + n, rlen - n, "%0*d/%d", fw, sel + 1, filecnt);
+ ow_info = info.script == NULL;
}
if (ow_info) {
fn = strlen(files[sel].name);
- if (fn < sizeof(bar.l) &&
+ if (fn < llen &&
win_textwidth(files[sel].name, fn, true) +
- win_textwidth(bar.r, n, true) < win.w)
+ win_textwidth(rt, n, true) < win.w)
{
- strncpy(bar.l, files[sel].name, sizeof(bar.l));
+ strncpy(lt, files[sel].name, llen);
} else {
- strncpy(bar.l, files[sel].base, sizeof(bar.l));
+ strncpy(lt, files[sel].base, llen);
}
}
- win_set_bar_info(&win, bar.l, bar.r);
}
void redraw(void)
@@ -458,8 +500,8 @@ void run(void)
int xfd;
fd_set fds;
struct timeval timeout;
+ bool discard, to_set;
XEvent ev, nextev;
- bool discard;
redraw();
@@ -482,12 +524,20 @@ void run(void)
check_timeouts(NULL);
}
- while (XPending(win.env.dpy) == 0 && check_timeouts(&timeout)) {
- /* wait for timeouts */
+ while (XPending(win.env.dpy) == 0
+ && ((to_set = check_timeouts(&timeout)) || info.fd != -1))
+ {
+ /* check for timeouts & input */
xfd = ConnectionNumber(win.env.dpy);
FD_ZERO(&fds);
FD_SET(xfd, &fds);
- select(xfd + 1, &fds, 0, 0, &timeout);
+ if (info.fd != -1) {
+ FD_SET(info.fd, &fds);
+ xfd = MAX(xfd, info.fd);
+ }
+ select(xfd + 1, &fds, 0, 0, to_set ? &timeout : NULL);
+ if (FD_ISSET(info.fd, &fds))
+ read_info();
}
do {
@@ -641,13 +691,14 @@ int main(int argc, char **argv)
warn("could not locate home directory");
} else {
len = strlen(homedir) + strlen(INFO_SCRIPT) + 2;
- info_script = (char*) s_malloc(len);
- snprintf(info_script, len, "%s/%s", homedir, INFO_SCRIPT);
- if (access(info_script, X_OK) != 0) {
- free(info_script);
- info_script = NULL;
+ info.script = (char*) s_malloc(len);
+ snprintf(info.script, len, "%s/%s", homedir, INFO_SCRIPT);
+ if (access(info.script, X_OK) != 0) {
+ free(info.script);
+ info.script = NULL;
}
}
+ info.fd = -1;
if (options->thumb_mode) {
mode = MODE_THUMB;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-06-29 13:34:31 +0200