From a01f21552806cc9b83f646ee1826853a6acfe468 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=AB=8F=E8=A8=AA=E5=AD=90?= <suwako@076.moe>
Date: Sun, 9 Jul 2023 11:32:04 +0900
Subject: [PATCH] mkdir

---
 CHANGELOG.md    |  1 +
 Makefile        |  2 +
 mkdir/Makefile  | 13 +++++++
 mkdir/mkdir.zig | 99 +++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 115 insertions(+)
 create mode 100644 mkdir/Makefile
 create mode 100644 mkdir/mkdir.zig

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c1c0bb..0366f8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 * catを追加
 * cpを追加
 * lsを追加
+* mkdirを追加（完了）
 * pwdを追加（完了）
 * rmを追加（完了）
 * touchを追加
diff --git a/Makefile b/Makefile
index 47c16d4..bfd69f1 100644
--- a/Makefile
+++ b/Makefile
@@ -8,6 +8,7 @@ all:
 	cd cat && make && mv cat ../bin && rm -rf cat.o && cd ..
 	cd cp && make && mv cp ../bin && rm -rf cp.o && cd ..
 	cd ls && make && mv ls ../bin && rm -rf ls.o && cd ..
+	cd mkdir && make && mv mkdir ../bin && rm -rf mkdir.o && cd ..
 	cd pwd && make && mv pwd ../bin && rm -rf pwd.o && cd ..
 	cd rm && make && mv rm ../bin && rm -rf rm.o && cd ..
 	cd touch && make && mv touch ../bin && rm -rf touch.o && cd ..
@@ -21,6 +22,7 @@ install: all
 	chmod 755 ${DESTDIR}${PREFIX}/bin/cat
 	chmod 755 ${DESTDIR}${PREFIX}/bin/cp
 	chmod 755 ${DESTDIR}${PREFIX}/bin/ls
+	chmod 755 ${DESTDIR}${PREFIX}/bin/mkdir
 	chmod 755 ${DESTDIR}${PREFIX}/bin/pwd
 	chmod 755 ${DESTDIR}${PREFIX}/bin/rm
 	chmod 755 ${DESTDIR}${PREFIX}/bin/touch
diff --git a/mkdir/Makefile b/mkdir/Makefile
new file mode 100644
index 0000000..746c1fc
--- /dev/null
+++ b/mkdir/Makefile
@@ -0,0 +1,13 @@
+NAME=mkdir
+VERSION := $(shell cat ../Makefile | grep "VERSION=" | sed 's/VERSION=//')
+SRC=${NAME}.zig
+CC=zig build-exe
+RELEASE=ReleaseSmall
+
+all:
+	${CC} ${SRC} -O ${RELEASE} --name ${NAME}
+
+clean:
+	rm -f ${NAME} ${NAME}.o
+
+.PHONY: all clean
diff --git a/mkdir/mkdir.zig b/mkdir/mkdir.zig
new file mode 100644
index 0000000..0e1a60f
--- /dev/null
+++ b/mkdir/mkdir.zig
@@ -0,0 +1,99 @@
+const std = @import("std");
+const fs = std.fs;
+const io = std.io;
+
+const version = "1.0.0";
+
+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: mkdir [OPTION]... DIRECTORY...\n", .{});
+    try stdout.print("ディレクトリが存在しない場合に、ディレクトリを作成します。\n\n", .{});
+    try stdout.print("-p ディレクトリが存在していてもエラーを返さない。\n   必要に応じて親ディレクトリを作成する。\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 bw.flush();
+}
+
+fn ver() !void {
+    const stdof = io.getStdOut().writer();
+    var bw = io.bufferedWriter(stdof);
+    const stdout = bw.writer();
+
+    try stdout.print("mkdir (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();
+
+    var fname = std.ArrayList([]const u8).init(alloc);
+    defer fname.deinit();
+
+    const args = try std.process.argsAlloc(alloc);
+    defer std.process.argsFree(alloc, args);
+
+    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 {
+            try fname.append(arg);
+        }
+    }
+
+    var isoya: bool = false;
+
+    for (option.items) |i| {
+        if (i == 'h') {
+            try help();
+            return;
+        }
+        if (i == 'v') {
+            try ver();
+            return;
+        }
+        if (i == 'p') {
+            isoya = true;
+        }
+    }
+
+    if (fname.items.len == 0) {
+        try help();
+        return;
+    }
+
+    for (fname.items) |item| {
+        if (isoya) {
+            var tmp_path = std.ArrayList(u8).init(alloc);
+            defer tmp_path.deinit();
+
+            var it = std.mem.split(u8, item, "/");
+            while (it.next()) |comp| {
+                _ = try tmp_path.appendSlice(comp);
+                _ = try tmp_path.append('/');
+                const tmp_path_str = tmp_path.items;
+                _ = fs.cwd().makeDir(tmp_path_str) catch |err| switch (err) {
+                    error.PathAlreadyExists => {},
+                    else => |e| return e,
+                };
+            }
+        } else {
+            try fs.cwd().makeDir(item);
+        }
+    }
+}