st

my build of st
git clone git://git.ckyln.com/st
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commit 9b163601cb1e7d10a5b5bea05b34dd7a24425abc
parent 80a5a6fb27cb7e862e083cb222eba6c7755581e4
Author: Cem Keylan <cem@ckyln.com>
Date:   Sun, 24 May 2020 21:57:25 +0300

externalpipe

Diffstat:
Mst.c | 53+++++++++++++++++++++++++++++++++++++++++++++++++++++
Mst.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 *);