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1 files changed, 76 insertions, 0 deletions

diff --git a/archive/st/patch/externalpipe.c b/archive/st/patch/externalpipe.c
new file mode 100644
index 0000000..37d8848
--- /dev/null
+++ b/archive/st/patch/externalpipe.c
@@ -0,0 +1,76 @@
+int extpipeactive = 0;
+
+void
+#if EXTERNALPIPEIN_PATCH
+extpipe(const Arg *arg, int in)
+#else
+externalpipe(const Arg *arg)
+#endif // EXTERNALPIPEIN_PATCH
+{
+	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]);
+		#if EXTERNALPIPEIN_PATCH
+		if (in)
+			dup2(csdfd, STDOUT_FILENO);
+		close(csdfd);
+		#endif // EXTERNALPIPEIN_PATCH
+		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);
+	extpipeactive = 1;
+}
+
+#if EXTERNALPIPEIN_PATCH
+void
+externalpipe(const Arg *arg) {
+	extpipe(arg, 0);
+}
+
+void
+externalpipein(const Arg *arg) {
+	extpipe(arg, 1);
+}
+#endif // EXTERNALPIPEIN_PATCH
\ No newline at end of file