externalpipe patch applied - success

This commit is contained in:
Ray Elliott 2020-02-25 22:07:53 +00:00
parent 27e8772cc2
commit 0befa1a5eb
3 changed files with 130 additions and 0 deletions

View File

@ -0,0 +1,76 @@
diff --git a/st.c b/st.c
index ede7ae6..f55d30f 100644
--- a/st.c
+++ b/st.c
@@ -1914,6 +1914,59 @@ 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)
{
diff --git a/st.h b/st.h
index 4da3051..cb7101f 100644
--- a/st.h
+++ b/st.h
@@ -80,6 +80,7 @@ void die(const char *, ...);
void redraw(void);
void draw(void);
+void externalpipe(const Arg *);
void printscreen(const Arg *);
void printsel(const Arg *);
void sendbreak(const Arg *);

53
st.c
View File

@ -1919,6 +1919,59 @@ 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)
{

1
st.h
View File

@ -81,6 +81,7 @@ void die(const char *, ...);
void redraw(void);
void draw(void);
void externalpipe(const Arg *);
void printscreen(const Arg *);
void printsel(const Arg *);
void sendbreak(const Arg *);