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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
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