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d29871977f
We already have a LICENSE file that covers the Zig Standard Library. We no longer need to remind everyone that the license is MIT in every single file. Previously this was introduced to clarify the situation for a fork of Zig that made Zig's LICENSE file harder to find, and replaced it with their own license that required annual payments to their company. However that fork now appears to be dead. So there is no need to reinforce the copyright notice in every single file.
77 lines
3.2 KiB
Zig
77 lines
3.2 KiB
Zig
const std = @import("../std.zig");
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const builtin = std.builtin;
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const unicode = std.unicode;
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const mem = std.mem;
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const fs = std.fs;
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const os = std.os;
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pub const GetAppDataDirError = error{
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OutOfMemory,
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AppDataDirUnavailable,
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};
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/// Caller owns returned memory.
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/// TODO determine if we can remove the allocator requirement
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pub fn getAppDataDir(allocator: *mem.Allocator, appname: []const u8) GetAppDataDirError![]u8 {
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switch (builtin.os.tag) {
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.windows => {
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var dir_path_ptr: [*:0]u16 = undefined;
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switch (os.windows.shell32.SHGetKnownFolderPath(
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&os.windows.FOLDERID_LocalAppData,
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os.windows.KF_FLAG_CREATE,
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null,
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&dir_path_ptr,
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)) {
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os.windows.S_OK => {
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defer os.windows.ole32.CoTaskMemFree(@ptrCast(*c_void, dir_path_ptr));
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const global_dir = unicode.utf16leToUtf8Alloc(allocator, mem.spanZ(dir_path_ptr)) catch |err| switch (err) {
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error.UnexpectedSecondSurrogateHalf => return error.AppDataDirUnavailable,
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error.ExpectedSecondSurrogateHalf => return error.AppDataDirUnavailable,
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error.DanglingSurrogateHalf => return error.AppDataDirUnavailable,
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error.OutOfMemory => return error.OutOfMemory,
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};
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defer allocator.free(global_dir);
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return fs.path.join(allocator, &[_][]const u8{ global_dir, appname });
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},
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os.windows.E_OUTOFMEMORY => return error.OutOfMemory,
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else => return error.AppDataDirUnavailable,
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}
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},
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.macos => {
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const home_dir = os.getenv("HOME") orelse {
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// TODO look in /etc/passwd
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return error.AppDataDirUnavailable;
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};
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return fs.path.join(allocator, &[_][]const u8{ home_dir, "Library", "Application Support", appname });
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},
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.linux, .freebsd, .netbsd, .dragonfly, .openbsd => {
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const home_dir = os.getenv("HOME") orelse {
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// TODO look in /etc/passwd
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return error.AppDataDirUnavailable;
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};
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return fs.path.join(allocator, &[_][]const u8{ home_dir, ".local", "share", appname });
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},
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.haiku => {
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var dir_path_ptr: [*:0]u8 = undefined;
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// TODO look into directory_which
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const be_user_settings = 0xbbe;
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const rc = os.system.find_directory(be_user_settings, -1, true, dir_path_ptr, 1);
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const settings_dir = try allocator.dupeZ(u8, mem.spanZ(dir_path_ptr));
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defer allocator.free(settings_dir);
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switch (rc) {
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0 => return fs.path.join(allocator, &[_][]const u8{ settings_dir, appname }),
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else => return error.AppDataDirUnavailable,
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}
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},
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else => @compileError("Unsupported OS"),
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}
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}
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test "getAppDataDir" {
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if (builtin.os.tag == .wasi) return error.SkipZigTest;
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// We can't actually validate the result
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const dir = getAppDataDir(std.testing.allocator, "zig") catch return;
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defer std.testing.allocator.free(dir);
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}
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