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feat: externalpipe patch

main
David JULIEN 1 year ago
parent
commit
093f29b5dd
  1. 8
      config.def.h
  2. 92
      patches/st-externalpipe-0.8.4.diff
  3. 61
      st.c
  4. 1
      st.h

8
config.def.h

@ -222,6 +222,11 @@ static MouseShortcut mshortcuts[] = {
#define MODKEY Mod1Mask /* ALT */
#define TERMMOD (ControlMask|ShiftMask)
/* External pipe commands */
static char *openurlcmd[] = { "/bin/sh", "-c", "st-urlhandler -o", "externalpipe", NULL };
static char *copyurlcmd[] = { "/bin/sh", "-c", "st-urlhandler -c", "externalpipe", NULL };
static char *copyoutput[] = { "/bin/sh", "-c", "st-copyout", "externalpipe", NULL };
static Shortcut shortcuts[] = {
/* mask keysym function argument */
{ XK_ANY_MOD, XK_Break, sendbreak, {.i = 0} },
@ -240,6 +245,9 @@ static Shortcut shortcuts[] = {
{ MODKEY, XK_k, kscrollup, {.i = 1} },
{ MODKEY, XK_d, kscrolldown, {.i = -1} },
{ MODKEY, XK_j, kscrolldown, {.i = 1} },
{ MODKEY, XK_l, externalpipe, {.v = openurlcmd } },
{ MODKEY, XK_y, externalpipe, {.v = copyurlcmd } },
{ MODKEY, XK_o, externalpipe, {.v = copyoutput } },
};
/*

92
patches/st-externalpipe-0.8.4.diff

@ -0,0 +1,92 @@
diff --git a/st.c b/st.c
index 76b7e0d..0e9a614 100644
--- a/st.c
+++ b/st.c
@@ -723,8 +723,14 @@ sigchld(int a)
if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
die("waiting for pid %hd failed: %s\n", pid, strerror(errno));
- if (pid != p)
+ if (pid != p) {
+ if (p == 0 && wait(&stat) < 0)
+ die("wait: %s\n", strerror(errno));
+
+ /* reinstall sigchld handler */
+ signal(SIGCHLD, sigchld);
return;
+ }
if (WIFEXITED(stat) && WEXITSTATUS(stat))
die("child exited with status %d\n", WEXITSTATUS(stat));
@@ -1926,6 +1932,59 @@ strparse(void)
}
}
+void
+externalpipe(const Arg *arg)
+{
+ int to[2];
+ char buf[UTF_SIZ];
+ void (*oldsigpipe)(int);
+ Glyph *bp, *end;
+ int lastpos, n, newline;
+
+ if (pipe(to) == -1)
+ return;
+
+ switch (fork()) {
+ case -1:
+ close(to[0]);
+ close(to[1]);
+ return;
+ case 0:
+ dup2(to[0], STDIN_FILENO);
+ close(to[0]);
+ close(to[1]);
+ execvp(((char **)arg->v)[0], (char **)arg->v);
+ fprintf(stderr, "st: execvp %s\n", ((char **)arg->v)[0]);
+ perror("failed");
+ exit(0);
+ }
+
+ close(to[0]);
+ /* ignore sigpipe for now, in case child exists early */
+ oldsigpipe = signal(SIGPIPE, SIG_IGN);
+ newline = 0;
+ for (n = 0; n < term.row; n++) {
+ bp = term.line[n];
+ lastpos = MIN(tlinelen(n) + 1, term.col) - 1;
+ if (lastpos < 0)
+ break;
+ end = &bp[lastpos + 1];
+ for (; bp < end; ++bp)
+ if (xwrite(to[1], buf, utf8encode(bp->u, buf)) < 0)
+ break;
+ if ((newline = term.line[n][lastpos].mode & ATTR_WRAP))
+ continue;
+ if (xwrite(to[1], "\n", 1) < 0)
+ break;
+ newline = 0;
+ }
+ if (newline)
+ (void)xwrite(to[1], "\n", 1);
+ close(to[1]);
+ /* restore */
+ signal(SIGPIPE, oldsigpipe);
+}
+
void
strdump(void)
{
diff --git a/st.h b/st.h
index 3d351b6..392b64e 100644
--- a/st.h
+++ b/st.h
@@ -81,6 +81,7 @@ void die(const char *, ...);
void redraw(void);
void draw(void);
+void externalpipe(const Arg *);
void printscreen(const Arg *);
void printsel(const Arg *);
void sendbreak(const Arg *);

61
st.c

@ -730,8 +730,14 @@ sigchld(int a)
if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
die("waiting for pid %hd failed: %s\n", pid, strerror(errno));
if (pid != p)
if (pid != p) {
if (p == 0 && wait(&stat) < 0)
die("wait: %s\n", strerror(errno));
/* reinstall sigchld handler */
signal(SIGCHLD, sigchld);
return;
}
if (WIFEXITED(stat) && WEXITSTATUS(stat))
die("child exited with status %d\n", WEXITSTATUS(stat));
@ -1996,6 +2002,59 @@ strparse(void)
}
}
void
externalpipe(const Arg *arg)
{
int to[2];
char buf[UTF_SIZ];
void (*oldsigpipe)(int);
Glyph *bp, *end;
int lastpos, n, newline;
if (pipe(to) == -1)
return;
switch (fork()) {
case -1:
close(to[0]);
close(to[1]);
return;
case 0:
dup2(to[0], STDIN_FILENO);
close(to[0]);
close(to[1]);
execvp(((char **)arg->v)[0], (char **)arg->v);
fprintf(stderr, "st: execvp %s\n", ((char **)arg->v)[0]);
perror("failed");
exit(0);
}
close(to[0]);
/* ignore sigpipe for now, in case child exists early */
oldsigpipe = signal(SIGPIPE, SIG_IGN);
newline = 0;
for (n = 0; n < term.row; n++) {
bp = term.line[n];
lastpos = MIN(tlinelen(n) + 1, term.col) - 1;
if (lastpos < 0)
break;
end = &bp[lastpos + 1];
for (; bp < end; ++bp)
if (xwrite(to[1], buf, utf8encode(bp->u, buf)) < 0)
break;
if ((newline = term.line[n][lastpos].mode & ATTR_WRAP))
continue;
if (xwrite(to[1], "\n", 1) < 0)
break;
newline = 0;
}
if (newline)
(void)xwrite(to[1], "\n", 1);
close(to[1]);
/* restore */
signal(SIGPIPE, oldsigpipe);
}
void
strdump(void)
{

1
st.h

@ -81,6 +81,7 @@ void die(const char *, ...);
void redraw(void);
void draw(void);
void externalpipe(const Arg *);
void kscrolldown(const Arg *);
void kscrollup(const Arg *);
void printscreen(const Arg *);

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