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use fmt;
use strings;
use getopt;
use os;
use io;
use path;
use os::exec;
use strconv;
use ascii;
type error = !(!str | io::error | path::error | exec::error | strconv::error);
type func = fn(tasks: []task, args: arguments) (void | task | error);
type command = struct {
names: []str,
func: *func,
};
type arguments = *getopt::command;
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,
},
command {
names = ["d", "done"],
func = &do,
},
];
fn execcommand(name: str, tasks: []task, args: arguments) (void | error) = {
for (const c .. commands) {
for (const n .. c.names) {
if (n == name) {
c.func(tasks, args)?;
};
};
};
};
fn write(tasks: []task, a: arguments) (void | task | error) = {
const args = a.args;
if (len(args) != 1z) {
getopt::printhelp(os::stderr, "write", a.help)?;
return;
};
const id = strconv::stoz(args[0])?;
const t = if (len(tasks) > id) {
yield tasks[id];
} else {
return "No such task";
};
const c = exec::cmd("vim", t.path)?;
exec::exec(&c);
};
fn show(tasks: []task, a: arguments) (void | task | error) = {
const args = a.args;
const id = strconv::stoz(args[0])?;
const t = if (len(tasks) > id) {
yield tasks[id];
} else {
return "No such task";
};
fmt::println(t.content)!;
};
fn printtask(t: task, id: size) (void | error) = {
let name = strings::dup(t.name);
defer free(name);
if (len(t.name) > PADDING - 4) {
name = strings::concat(strings::sub(t.name, 0z, PADDING - 4),
"...");
};
const pad = PADDING - len(name) + len(strconv::utos(t.priority));
const namepad = 10 - len(strconv::ztos(id)) + len(name);
fmt::printfln("{}{%}{%}", id, name, &fmt::mods {
pad = ' ',
width = namepad,
...
},
t.priority, &fmt::mods {
pad = ' ',
width = pad,
...
},
)!;
};
fn do(tasks: []task, a: arguments) (void | task | error) = {
if (len(a.args) != 1z) {
getopt::printhelp(os::stderr, "done", a.help)?;
os::exit(os::status::FAILURE);
};
const id = strconv::stoz(a.args[0])?;
const t = tasks[id];
os::remove(t.path)?;
fmt::printfln("Task {}: \"{}\" done (deleted)", id, t.name)!;
};
fn filter(tasks: []task, a: arguments) (void | task | error) = {
const headpad = PADDING - len("name") + len("priority");
const namepad = 10 - len("id") + len("name");
fmt::printfln("id{%}{%}",
"name", &fmt::mods {
pad = ' ',
width = namepad,
...
},"priority", &fmt::mods {
pad = ' ',
width = headpad,
...
},
)!;
const args = a.args;
for (let i = 0z; i < len(tasks); i += 1) {
const t = tasks[i];
if (len(args) == 0z) {
printtask(t, i)?;
};
for (const s .. args) {
const lname = ascii::strlower(t.name);
defer free(lname);
const ls = ascii::strlower(s);
defer free(ls);
if (strings::contains(lname, ls)) {
printtask(t, i)?;
};
};
};
};
fn listall(tasks: []task) void = {
const headpad = PADDING - len("name") + len("priority");
const namepad = 10 - len("id") + len("name");
fmt::printfln("id{%}{%}",
"name", &fmt::mods {
pad = ' ',
width = namepad,
...
},"priority", &fmt::mods {
pad = ' ',
width = headpad,
...
},
)!;
for (let i = 0z; i < len(tasks); i += 1) {
printtask(tasks[i], i)!;
};
};
fn strerror(e: error) str = {
match (e) {
case let e: !str =>
return e;
case let e: io::error =>
return io::strerror(e);
case let e: path::error =>
return path::strerror(e);
case let e: exec::error =>
return exec::strerror(e);
case let e: strconv::error =>
return strconv::strerror(e);
};
};
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