76 lines
1.5 KiB
Diff
76 lines
1.5 KiB
Diff
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diff --git a/st.c b/st.c
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index d6fe58a..1595e59 100644
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--- a/st.c
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+++ b/st.c
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@@ -344,6 +344,7 @@ static void printscreen(const Arg *) ;
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static void iso14755(const Arg *);
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static void toggleprinter(const Arg *);
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static void sendbreak(const Arg *);
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+static void externalpipe(const Arg *);
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/* Config.h for applying patches and the configuration. */
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#include "config.h"
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@@ -2996,6 +2997,62 @@ eschandle(uchar ascii)
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}
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void
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+externalpipe(const Arg *arg)
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+{
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+ int to[2]; /* 0 = read, 1 = write */
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+ pid_t child;
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+ int n;
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+ void (*oldsigpipe)(int);
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+ char buf[UTF_SIZ];
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+ Glyph *bp, *end;
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+
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+ if(pipe(to) == -1)
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+ return;
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+
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+ /* sigchld() handles this */
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+ switch(child = fork()){
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+ case -1:
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+ close(to[0]), close(to[1]);
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+ return;
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+ case 0:
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+ /* child */
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+ close(to[1]);
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+ dup2(to[0], STDIN_FILENO); /* 0<&to */
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+ close(to[0]);
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+ execvp(
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+ "sh",
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+ (char *const []){
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+ "/bin/sh",
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+ "-c",
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+ (char *)arg->v,
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+ 0
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+ });
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+ exit(127);
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+ }
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+
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+ /* parent */
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+ close(to[0]);
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+ /* ignore sigpipe for now, in case child exits early */
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+ oldsigpipe = signal(SIGPIPE, SIG_IGN);
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+
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+ for(n = 0; n < term.row; n++){
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+ bp = &term.line[n][0];
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+ end = &bp[MIN(tlinelen(n), term.col) - 1];
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+ if(bp != end || bp->u != ' ')
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+ for(; bp <= end; ++bp)
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+ if(xwrite(to[1], buf, utf8encode(bp->u, buf)) < 0)
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+ break;
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+ if(xwrite(to[1], "\n", 1) < 0)
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+ break;
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+ }
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+
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+ close(to[1]);
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+
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+ /* restore */
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+ signal(SIGPIPE, oldsigpipe);
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+}
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+
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+void
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tputc(Rune u)
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{
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char c[UTF_SIZ];
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