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authorJune McEnroe <june@causal.agency>2020-02-08 17:42:19 -0500
committerJune McEnroe <june@causal.agency>2020-02-08 17:42:19 -0500
commit156282c95d523b0c19f5409eb15cd53fc3211894 (patch)
treef389dd7fb392a56d4c3312413c5d46d5173c4710
parentHandle SIGCHLD (diff)
downloadcatgirl-156282c95d523b0c19f5409eb15cd53fc3211894.tar.gz
catgirl-156282c95d523b0c19f5409eb15cd53fc3211894.zip
Add procPipe for subprocesses
-rw-r--r--chat.c30
-rw-r--r--chat.h2
2 files changed, 28 insertions, 4 deletions
diff --git a/chat.c b/chat.c
index 372cbbd..ca35d7d 100644
--- a/chat.c
+++ b/chat.c
@@ -45,6 +45,21 @@ size_t idNext = Network + 1;
 
 struct Self self = { .color = Default };
 
+int procPipe[2] = { -1, -1 };
+
+static void pipeRead(void) {
+	char buf[1024];
+	ssize_t len = read(procPipe[0], buf, sizeof(buf) - 1);
+	if (len < 0) err(EX_IOERR, "read");
+	if (!len) return;
+	buf[len - 1] = '\0';
+	char *ptr = buf;
+	while (ptr) {
+		char *line = strsep(&ptr, "\n");
+		uiFormat(Network, Warm, NULL, "%s", line);
+	}
+}
+
 static volatile sig_atomic_t signals[NSIG];
 static void signalHandler(int signal) {
 	signals[signal] = 1;
@@ -146,15 +161,22 @@ int main(int argc, char *argv[]) {
 	signal(SIGCHLD, signalHandler);
 	sig_t cursesWinch = signal(SIGWINCH, signalHandler);
 
-	struct pollfd fds[2] = {
+	int error = pipe(procPipe);
+	if (error) err(EX_OSERR, "pipe");
+
+	struct pollfd fds[3] = {
 		{ .events = POLLIN, .fd = STDIN_FILENO },
 		{ .events = POLLIN, .fd = irc },
+		{ .events = POLLIN, .fd = procPipe[0] },
 	};
 	while (!self.quit) {
-		int nfds = poll(fds, 2, -1);
+		int nfds = poll(fds, ARRAY_LEN(fds), -1);
 		if (nfds < 0 && errno != EINTR) err(EX_IOERR, "poll");
-		if (nfds > 0 && fds[0].revents) uiRead();
-		if (nfds > 0 && fds[1].revents) ircRecv();
+		if (nfds > 0) {
+			if (fds[0].revents) uiRead();
+			if (fds[1].revents) ircRecv();
+			if (fds[2].revents) pipeRead();
+		}
 
 		if (signals[SIGHUP]) self.quit = "zzz";
 		if (signals[SIGINT] || signals[SIGTERM]) break;
diff --git a/chat.h b/chat.h
index 34e1812..909527e 100644
--- a/chat.h
+++ b/chat.h
@@ -28,6 +28,8 @@
 
 typedef unsigned char byte;
 
+int procPipe[2];
+
 enum Color {
 	White, Black, Blue, Green, Red, Brown, Magenta, Orange,
 	Yellow, LightGreen, Cyan, LightCyan, LightBlue, Pink, Gray, LightGray,