Add write, show and filter commands

1 files changed, 106 insertions, 0 deletions

diff --git a/cmd.ha b/cmd.ha
new file mode 100644
index 0000000..ff37c79
--- /dev/null
+++ b/cmd.ha
@@ -0,0 +1,106 @@
+use fmt;
+use strings;
+use getopt;
+use os;
+use io;
+use path;
+use os::exec;
+use strconv;
+
+type error = !(io::error | path::error | exec::error);
+
+type func = fn(tasks: []task, args: str...) (void | task | error);
+
+type command = struct {
+	names: []str,
+	func: *func,
+};
+
+const PADDING: size = 30z;
+
+const commands: [_]command = [
+	command {
+		names = ["f", "filter"],
+		func = &filter,
+	},
+	command {
+		names = ["s", "show"],
+		func = &show,
+	},
+	command {
+		names = ["w", "write"],
+		func = &write,
+	},
+];
+
+fn execcommand(name: str, tasks: []task, args: str...) (void | error) = {
+	for (const c .. commands) {
+		for (const n .. c.names) {
+			if (n == name) {
+				c.func(tasks, args...)?;
+			};
+		};
+	};
+};
+
+fn write(tasks: []task, args: str...) (void | task | error) = {
+	const cmdname = "task write";
+	const cmdhelp: []getopt::help = ["write a task", "<name>"];
+	if (len(args) == 0z) {
+		getopt::printhelp(os::stderr, cmdname, cmdhelp)?;
+		return;
+	};
+	const cmd = getopt::parse(args,
+		cmdname: getopt::help,
+		cmdhelp[0],
+		cmdhelp[1],
+	);
+	defer getopt::finish(&cmd);
+
+	if (len(args) != 1z) {
+		getopt::printhelp(os::stderr, cmdname, cmdhelp)?;
+		return;
+	};
+
+	let buf = path::init()?;
+	const p = path::push(&buf, "tasks", args[0])?;
+	const c = exec::cmd("vim", p)?;
+	exec::exec(&c);
+};
+
+fn show(tasks: []task, args: str...) (void | task | error) = {
+	for (const t .. tasks) {
+		for (const s .. args) {
+			if (t.name == s) {
+				fmt::println(t.content)!;
+			};
+		};
+	};
+};
+
+fn printtask(t: task) (void | error) = {
+	const pad = PADDING - len(t.name) + len(strconv::utos(t.priority));
+	fmt::printfln("{}{%}", t.name, t.priority, &fmt::mods {
+		pad = ' ',
+		width = pad, ...
+	})!;
+};
+
+fn filter(tasks: []task, args: str...) (void | task | error) = {
+	const headpad = PADDING - len("name") + len("priority");
+	fmt::printfln("name{%}", "priority", &fmt::mods {
+		pad = ' ',
+		width = headpad,
+		...
+	})!;
+	for (const t .. tasks) {
+		if (len(args) == 0z) {
+			printtask(t)?;
+		};
+		for (const s .. args) {
+			if (strings::contains(t.name, s)) {
+				printtask(t)?;
+			};
+		};
+	};
+};