dc

commit f437c515b43132ed75b0689c63ffcee192f142ed
parent 1c73944df8806b9a34073bae3251457e07a5ca2f
Author: Byron Torres <b@torresjrjr.com>
Date:   Sat, 16 Apr 2022 02:28:27 +0100

handle IO errors

Diffstat:
M
dc.ha
 | 
29
+++++++++++++++++++++--------

1 file changed, 21 insertions(+), 8 deletions(-)
diff --git a/dc.ha b/dc.ha
@@ -42,14 +42,24 @@ export fn main() void = {
 		defer io::close(file);
 
 		const in = bufio::buffered(file, buf, []);
-		dc(&in);
+		match (dc(&in)) {
+		case void =>
+			void;
+		case io::error =>
+			fmt::fatal("dc: IO error");
+		};
 	};
 
 	const in = bufio::buffered(os::stdin, buf, []);
-	dc(&in);
+	match (dc(&in)) {
+	case void =>
+		void;
+	case io::error =>
+		fmt::fatal("dc: IO error");
+	};
 };
 
-fn dc(in: *bufio::bufstream) void = {
+fn dc(in: *bufio::bufstream) (void | io::error) = {
 	for (true) {
 		const r = match (bufio::scanrune(&in.stream)) {
 		case utf8::invalid =>
@@ -98,18 +108,21 @@ fn dc(in: *bufio::bufstream) void = {
 				};
 			};
 			const argv = strings::split(cmdline, " ");
-			const cmd = exec::cmd(argv[0], argv[1..]...)?;
+			if (len(argv) == 0) {
+				continue;
+			};
+			const cmd = os::exec::cmd(argv[0], argv[1..]...)!; //TODO
 
-			const pipe = exec::pipe();
-			exec::addfile(&cmd, pipe.1, os::stdout_file);
+			const pipe = os::exec::pipe();
+			os::exec::addfile(&cmd, pipe.1, os::stdout_file);
 
-			const proc = exec::start(&cmd)?;
+			const proc = os::exec::start(&cmd)!; //TODO
 			io::close(pipe.1);
 
 			let data = io::drain(pipe.0);
 			io::close(pipe.0);
 
-			const status = exec::wait(&proc);
+			const status = os::exec::wait(&proc);
 		// printing
 		case 'p' =>
 			if (len(S) == 0) {