kojote/cmd/linebreak/main.ha
Drew DeVault 1488c26f46 linebreak: return bytewise position as well
Signed-off-by: Drew DeVault <sir@cmpwn.com>
2024-04-17 11:31:28 +02:00

40 lines
831 B
Hare

use encoding::hex;
use fmt;
use os;
use strings;
use unicode;
export fn main() void = {
const input = os::args[1];
const data = strings::toutf8(input);
hex::dump(os::stdout, data)!;
fmt::println(input)!;
let ix = 0u;
const lb = unicode::new_line_breaker(input);
for (const (pos, _, mand) => unicode::next_line_break(&lb)) {
for (ix < pos; ix += 1) {
fmt::print(' ')!;
};
ix += 1;
if (mand) {
fmt::println('|')!;
} else {
fmt::print('^')!;
};
};
fmt::println()!;
fmt::println()!;
fmt::println("Line break opportunities:")!;
const lb = unicode::new_line_breaker(input);
for (const (pos, bpos, mand) => unicode::next_line_break(&lb)) {
fmt::printfln("- {}:{} {} (before '{}'/0x{:x})", pos, bpos,
if (mand) "(mandatory)" else "",
strings::sub(input, pos, pos+1),
data[bpos])!;
};
};