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-rw-r--r--st.c61
-rw-r--r--st.h1
2 files changed, 61 insertions, 1 deletions
diff --git a/st.c b/st.c
index 7d125fd..bf6ddcd 100644
--- a/st.c
+++ b/st.c
@@ -725,8 +725,14 @@ 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));
@@ -2047,6 +2053,59 @@ 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)
{
size_t i;
diff --git a/st.h b/st.h
index b5bf895..1897851 100644
--- a/st.h
+++ b/st.h
@@ -90,6 +90,7 @@ 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 *);