commit 9b163601cb1e7d10a5b5bea05b34dd7a24425abc
parent 80a5a6fb27cb7e862e083cb222eba6c7755581e4
Author: Cem Keylan <cem@ckyln.com>
Date: Sun, 24 May 2020 21:57:25 +0300
externalpipe
Diffstat:
| M | st.c | | | 53 | +++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| M | st.h | | | 1 | + |
2 files changed, 54 insertions(+), 0 deletions(-)
diff --git a/st.c b/st.c
@@ -1986,6 +1986,59 @@ 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
@@ -83,6 +83,7 @@ void draw(void);
void kscrolldown(const Arg *);
void kscrollup(const Arg *);
+void externalpipe(const Arg *);
void printscreen(const Arg *);
void printsel(const Arg *);
void sendbreak(const Arg *);
