86 行
2.2 KiB
Zig
86 行
2.2 KiB
Zig
const std = @import("std");
|
|
const io = std.io;
|
|
const os = std.os;
|
|
|
|
const version = @import("version.zig").version;
|
|
|
|
fn help() !void {
|
|
const stdof = io.getStdOut().writer();
|
|
var bw = io.bufferedWriter(stdof);
|
|
const stdout = bw.writer();
|
|
|
|
try stdout.print("076 coreutils\n", .{});
|
|
try stdout.print("使用法: echo\n", .{});
|
|
try stdout.print("文章を表示\n\n", .{});
|
|
try stdout.print("-h ヘルプを表示\n", .{});
|
|
try stdout.print("-v バージョンを表示\n", .{});
|
|
try stdout.print("-n ニューラインを見逃す\n", .{});
|
|
|
|
try bw.flush();
|
|
}
|
|
|
|
fn ver() !void {
|
|
const stdof = io.getStdOut().writer();
|
|
var bw = io.bufferedWriter(stdof);
|
|
const stdout = bw.writer();
|
|
|
|
try stdout.print("echo (076 coreutils) {s}\n", .{version});
|
|
|
|
try bw.flush();
|
|
}
|
|
|
|
pub fn main() !void {
|
|
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
|
|
defer _ = gpa.deinit();
|
|
const alloc = gpa.allocator();
|
|
|
|
var option = std.ArrayList(u8).init(alloc);
|
|
defer option.deinit();
|
|
|
|
const args = try std.process.argsAlloc(alloc);
|
|
defer std.process.argsFree(alloc, args);
|
|
var text: [1024]u8 = undefined;
|
|
var text_len: usize = 0;
|
|
|
|
for (args, 0..) |arg, i| {
|
|
if (i == 0) continue;
|
|
var m: [1]u8 = [_]u8{'-'};
|
|
if (std.mem.eql(u8, arg[0..1], m[0..])) {
|
|
for (arg, 0..) |a, j| {
|
|
if (j == 0) continue;
|
|
try option.append(a);
|
|
}
|
|
} else {
|
|
const length = @min(arg.len, text.len - 1);
|
|
std.mem.copy(u8, text[0..length], arg[0..length]);
|
|
text_len = length;
|
|
}
|
|
}
|
|
|
|
var isnonl = false;
|
|
for (option.items) |i| {
|
|
if (i == 'h') {
|
|
try help();
|
|
return;
|
|
}
|
|
if (i == 'v') {
|
|
try ver();
|
|
return;
|
|
}
|
|
if (i == 'n') {
|
|
isnonl = true;
|
|
}
|
|
}
|
|
|
|
const stdof = io.getStdOut().writer();
|
|
var bw = io.bufferedWriter(stdof);
|
|
const stdout = bw.writer();
|
|
|
|
if (isnonl) {
|
|
try stdout.print("{s}", .{text[0..text_len]});
|
|
} else {
|
|
try stdout.print("{s}\n", .{text[0..text_len]});
|
|
}
|
|
try bw.flush();
|
|
}
|