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57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
int extpipeactive = 0;
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void
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externalpipe(const Arg *arg)
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{
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int to[2];
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char buf[UTF_SIZ];
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void (*oldsigpipe)(int);
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Glyph *bp, *end;
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int lastpos, n, newline;
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if (pipe(to) == -1)
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return;
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switch (fork()) {
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case -1:
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close(to[0]);
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close(to[1]);
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return;
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case 0:
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dup2(to[0], STDIN_FILENO);
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close(to[0]);
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close(to[1]);
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execvp(((char **)arg->v)[0], (char **)arg->v);
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fprintf(stderr, "st: execvp %s\n", ((char **)arg->v)[0]);
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perror("failed");
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exit(0);
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}
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close(to[0]);
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/* ignore sigpipe for now, in case child exists early */
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oldsigpipe = signal(SIGPIPE, SIG_IGN);
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newline = 0;
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for (n = 0; n < term.row; n++) {
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bp = term.line[n];
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lastpos = MIN(tlinelen(TLINE(n)) + 1, term.col) - 1;
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if (lastpos < 0)
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break;
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end = &bp[lastpos + 1];
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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 ((newline = term.line[n][lastpos].mode & ATTR_WRAP))
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continue;
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if (xwrite(to[1], "\n", 1) < 0)
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break;
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newline = 0;
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}
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if (newline)
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(void)xwrite(to[1], "\n", 1);
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close(to[1]);
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/* restore */
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signal(SIGPIPE, oldsigpipe);
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extpipeactive = 1;
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}
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