echo groups whoami
このコミットが含まれているのは:
コミット
94056a27cf
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@ -1,8 +1,11 @@
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# 0.0.1
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* catを追加
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* cpを追加
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* echoを追加(完了)
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* groupsを追加(完了)
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* lsを追加
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* mkdirを追加(完了)
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* pwdを追加(完了)
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* rmを追加(完了)
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* touchを追加
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* whoamiを追加(完了)
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@ -0,0 +1,85 @@
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const std = @import("std");
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const io = std.io;
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const os = std.os;
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const version = @import("version.zig").version;
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fn help() !void {
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const stdof = io.getStdOut().writer();
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var bw = io.bufferedWriter(stdof);
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const stdout = bw.writer();
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try stdout.print("076 coreutils\n", .{});
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try stdout.print("使用法: echo\n", .{});
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try stdout.print("文章を表示\n\n", .{});
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try stdout.print("-h ヘルプを表示\n", .{});
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try stdout.print("-v バージョンを表示\n", .{});
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try stdout.print("-n ニューラインを見逃す\n", .{});
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try bw.flush();
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}
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fn ver() !void {
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const stdof = io.getStdOut().writer();
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var bw = io.bufferedWriter(stdof);
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const stdout = bw.writer();
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try stdout.print("echo (076 coreutils) {s}\n", .{version});
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try bw.flush();
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}
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pub fn main() !void {
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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defer _ = gpa.deinit();
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const alloc = gpa.allocator();
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var option = std.ArrayList(u8).init(alloc);
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defer option.deinit();
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const args = try std.process.argsAlloc(alloc);
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defer std.process.argsFree(alloc, args);
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var text: [1024]u8 = undefined;
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var text_len: usize = 0;
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for (args, 0..) |arg, i| {
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if (i == 0) continue;
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var m: [1]u8 = [_]u8{'-'};
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if (std.mem.eql(u8, arg[0..1], m[0..])) {
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for (arg, 0..) |a, j| {
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if (j == 0) continue;
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try option.append(a);
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}
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} else {
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const length = std.math.min(arg.len, text.len - 1);
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std.mem.copy(u8, text[0..length], arg[0..length]);
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text_len = length;
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}
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}
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var isnonl = false;
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for (option.items) |i| {
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if (i == 'h') {
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try help();
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return;
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}
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if (i == 'v') {
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try ver();
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return;
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}
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if (i == 'n') {
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isnonl = true;
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}
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}
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const stdof = io.getStdOut().writer();
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var bw = io.bufferedWriter(stdof);
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const stdout = bw.writer();
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if (isnonl) {
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try stdout.print("{s}", .{text[0..text_len]});
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} else {
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try stdout.print("{s}\n", .{text[0..text_len]});
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}
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try bw.flush();
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}
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@ -0,0 +1,165 @@
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const std = @import("std");
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const fs = std.fs;
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const io = std.io;
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const os = std.os;
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const mem = std.mem;
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const version = @import("version.zig").version;
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fn help() !void {
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const stdof = io.getStdOut().writer();
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var bw = io.bufferedWriter(stdof);
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const stdout = bw.writer();
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try stdout.print("076 coreutils\n", .{});
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try stdout.print("使用法: groups\n", .{});
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try stdout.print("グループ名を表示\n\n", .{});
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try stdout.print("-h ヘルプを表示\n", .{});
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try stdout.print("-v バージョンを表示\n", .{});
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try bw.flush();
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}
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fn ver() !void {
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const stdof = io.getStdOut().writer();
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var bw = io.bufferedWriter(stdof);
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const stdout = bw.writer();
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try stdout.print("groups (076 coreutils) {s}\n", .{version});
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try bw.flush();
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}
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pub fn main() !void {
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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defer _ = gpa.deinit();
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const alloc = gpa.allocator();
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var option = std.ArrayList(u8).init(alloc);
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defer option.deinit();
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const args = try std.process.argsAlloc(alloc);
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defer std.process.argsFree(alloc, args);
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var username: [32]u8 = undefined;
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for (args, 0..) |arg, i| {
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if (i == 0) continue;
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var m: [1]u8 = [_]u8{'-'};
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if (mem.eql(u8, arg[0..1], m[0..])) {
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for (arg, 0..) |a, j| {
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if (j == 0) continue;
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try option.append(a);
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}
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} else {
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const length = std.math.min(arg.len, username.len - 1);
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mem.copy(u8, username[0..length], arg[0..length]);
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username[length] = 0;
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}
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}
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for (option.items) |i| {
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if (i == 'h') {
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try help();
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return;
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}
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if (i == 'v') {
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try ver();
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return;
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}
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}
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const stdof = io.getStdOut().writer();
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var bw = io.bufferedWriter(stdof);
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const stdout = bw.writer();
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var buf: [4096]u8 = undefined;
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if (username[0] == 0) {
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const pfile = try fs.cwd().openFile("/etc/passwd", .{});
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defer pfile.close();
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const pstream = pfile.reader();
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const preal = try pstream.readAll(&buf);
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var plines = mem.split(u8, buf[0..preal], "\n");
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while (plines.next()) |*line| {
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var fields = mem.split(u8, line.*, ":");
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var username_opt = fields.next();
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_ = fields.next();
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var uid_str_opt = fields.next();
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if (username_opt != null and uid_str_opt != null) {
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const puid = std.fmt.parseInt(u32, uid_str_opt.?, 10) catch continue;
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if (puid == os.linux.getuid()) {
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if (username_opt) |username_slice| {
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mem.copy(u8, username[0..], username_slice);
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}
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break;
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}
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}
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}
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}
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const cwd = fs.cwd();
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const file = try cwd.openFile("/etc/group", .{});
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defer file.close();
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const stream = file.reader();
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const real = try stream.readAll(&buf);
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var user_found_in_group = false;
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var lines = mem.split(u8, buf[0..real], "\n");
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while (lines.next()) |*line| {
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var fields = mem.split(u8, line.*, ":");
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var group_opt = fields.next();
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_ = fields.next();
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_ = fields.next();
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var users_str_opt = fields.next();
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if (group_opt != null and users_str_opt != null) {
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var users = mem.split(u8, users_str_opt.?, ",");
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while (users.next()) |user| {
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var user_length: usize = 0;
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while (user[user_length] != ':' and user[user_length] != '\n') : (user_length += 1) {}
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var username_length: usize = 0;
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while (username[username_length] != 0) : (username_length += 1) {}
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if (mem.eql(u8, user[0..user_length], username[0..username_length])) {
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try stdout.print("{s} ", .{group_opt.?});
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}
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}
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}
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}
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var it = mem.split(u8, buf[0..real], "\n");
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while (it.next()) |line| {
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user_found_in_group = false;
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var split = mem.split(u8, line, ":");
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if (split.next()) |group| {
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var group_length: usize = 0;
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while (group[group_length] != ':' and group[group_length] != '\n') : (group_length += 1) {}
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var username_length: usize = 0;
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while (username[username_length] != 0) : (username_length += 1) {}
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if (split.next()) |_| {
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if (split.next()) |_| {
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if (split.next()) |users| {
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var users_list = mem.split(u8, users, ",");
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while (users_list.next()) |user| {
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var user_length: usize = 0;
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while (user[user_length] != ':' and user[user_length] != '\n') : (user_length += 1) {}
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if (std.mem.eql(u8, user[0..user_length], username[0..username_length])) {
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user_found_in_group = true;
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}
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}
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}
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}
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}
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if (std.mem.eql(u8, group[0..group_length], username[0..username_length]) and !user_found_in_group) {
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try stdout.print("{s} ", .{group});
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}
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}
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}
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try stdout.print("\n", .{});
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try bw.flush();
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}
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@ -0,0 +1,91 @@
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const std = @import("std");
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const fs = std.fs;
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const io = std.io;
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const os = std.os;
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const version = @import("version.zig").version;
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fn help() !void {
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const stdof = io.getStdOut().writer();
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var bw = io.bufferedWriter(stdof);
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const stdout = bw.writer();
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try stdout.print("076 coreutils\n", .{});
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try stdout.print("使用法: whoami\n", .{});
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try stdout.print("ユーザー名を表示\n\n", .{});
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try stdout.print("-h ヘルプを表示\n", .{});
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try stdout.print("-v バージョンを表示\n", .{});
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try bw.flush();
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}
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fn ver() !void {
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const stdof = io.getStdOut().writer();
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var bw = io.bufferedWriter(stdof);
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const stdout = bw.writer();
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try stdout.print("whoami (076 coreutils) {s}\n", .{version});
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try bw.flush();
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}
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pub fn main() !void {
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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defer _ = gpa.deinit();
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const alloc = gpa.allocator();
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var option = std.ArrayList(u8).init(alloc);
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defer option.deinit();
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const args = try std.process.argsAlloc(alloc);
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defer std.process.argsFree(alloc, args);
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for (args, 0..) |arg, i| {
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if (i == 0) continue;
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var m: [1]u8 = [_]u8{'-'};
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if (std.mem.eql(u8, arg[0..1], m[0..])) {
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for (arg, 0..) |a, j| {
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if (j == 0) continue;
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try option.append(a);
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}
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}
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}
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for (option.items) |i| {
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if (i == 'h') {
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try help();
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return;
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}
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if (i == 'v') {
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try ver();
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return;
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}
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}
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const stdof = io.getStdOut().writer();
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var bw = io.bufferedWriter(stdof);
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const stdout = bw.writer();
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const file = try fs.cwd().openFile("/etc/passwd", .{});
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defer file.close();
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var buf: [4096]u8 = undefined;
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const stream = file.reader();
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const real = try stream.readAll(&buf);
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var lines = std.mem.split(u8, buf[0..real], "\n");
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while (lines.next()) |*line| {
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var fields = std.mem.split(u8, line.*, ":");
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var username_opt = fields.next();
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_ = fields.next();
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var uid_str_opt = fields.next();
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if (username_opt != null and uid_str_opt != null) {
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const puid = std.fmt.parseInt(u32, uid_str_opt.?, 10) catch continue;
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if (puid == os.linux.getuid()) {
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try stdout.print("{s}\n", .{username_opt.?});
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try bw.flush();
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return;
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}
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}
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}
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}
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