Create util.zig
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47353aaf13
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5eaed13f7a
3 changed files with 133 additions and 127 deletions
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@ -1,5 +1,5 @@
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const root = @import("root");
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const Uuid = root.Uuid;
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const Uuid = root.util.Uuid;
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pub const Actor = struct {
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id: Uuid,
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131
src/main.zig
131
src/main.zig
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@ -1,136 +1,15 @@
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const std = @import("std");
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const db = @import("./db.zig");
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pub const db = @import("./db.zig");
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pub const util = @import("./util.zig");
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pub const io_mode = .evented;
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const Uuid = util.Uuid;
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const ciutf8 = util.ciutf8;
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const Reader = std.net.Stream.Reader;
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const Writer = std.net.Stream.Writer;
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pub const Uuid = struct {
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data: [16]u8,
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pub fn eql(lhs: Uuid, rhs: Uuid) bool {
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return std.mem.eql(u8, &lhs.data, &rhs.data);
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}
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pub fn format(value: Uuid, comptime _: []const u8, _: std.fmt.FormatOptions, writer: anytype) !void {
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try std.fmt.format(writer, "{x:0>2}{x:0>2}{x:0>2}{x:0>2}-{x:0>2}{x:0>2}-{x:0>2}{x:0>2}-{x:0>2}{x:0>2}-{x:0>2}{x:0>2}{x:0>2}{x:0>2}{x:0>2}{x:0>2}", .{
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value.data[0],
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value.data[1],
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value.data[2],
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value.data[3],
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value.data[4],
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value.data[5],
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value.data[6],
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value.data[7],
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value.data[8],
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value.data[9],
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value.data[10],
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value.data[11],
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value.data[12],
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value.data[13],
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value.data[14],
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value.data[15],
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});
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}
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const ParseError = error{
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InvalidCharacter,
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};
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pub fn parse(str: []const u8) ParseError!Uuid {
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if (str.len < 36) return error.InvalidCharacter;
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var uuid: Uuid = undefined;
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var str_i: usize = 0;
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var i: usize = 0;
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while (i < 16 and str_i < str.len) : ({
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i += 1;
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str_i += 2;
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}) {
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uuid.data[i] = std.fmt.parseInt(u8, str[str_i .. str_i + 2], 16) catch |err| switch (err) {
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error.InvalidCharacter => return error.InvalidCharacter,
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else => unreachable,
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};
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if (i == 3 or i == 5 or i == 7 or i == 9) {
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if (str[str_i + 2] != '-') return error.InvalidCharacter;
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str_i += 1;
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}
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}
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return uuid;
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}
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};
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const ciutf8 = struct {
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const Hash = std.hash.Wyhash;
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const View = std.unicode.Utf8View;
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const toLower = std.ascii.toLower;
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const isAscii = std.ascii.isASCII;
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const seed = 1;
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pub fn hash(str: []const u8) u64 {
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// fallback to regular hash on invalid utf8
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const view = View.init(str) catch return Hash.hash(seed, str);
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var iter = view.iterator();
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var h = Hash.init(seed);
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var it = iter.nextCodepointSlice();
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while (it != null) : (it = iter.nextCodepointSlice()) {
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if (it.?.len == 1 and isAscii(it.?[0])) {
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const ch = [1]u8{toLower(it.?[0])};
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h.update(&ch);
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} else {
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h.update(it.?);
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}
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}
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return h.final();
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}
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pub fn eql(a: []const u8, b: []const u8) bool {
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if (a.len != b.len) return false;
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const va = View.init(a) catch return std.mem.eql(u8, a, b);
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const vb = View.init(b) catch return false;
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var iter_a = va.iterator();
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var iter_b = vb.iterator();
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var it_a = iter_a.nextCodepointSlice();
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var it_b = iter_b.nextCodepointSlice();
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while (it_a != null and it_b != null) : ({
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it_a = iter_a.nextCodepointSlice();
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it_b = iter_b.nextCodepointSlice();
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}) {
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if (it_a.?.len != it_b.?.len) return false;
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if (it_a.?.len == 1) {
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if (isAscii(it_a.?[0]) and isAscii(it_b.?[0])) {
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const ch_a = toLower(it_a.?[0]);
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const ch_b = toLower(it_b.?[0]);
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if (ch_a != ch_b) return false;
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} else if (it_a.?[0] != it_b.?[0]) return false;
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} else if (!std.mem.eql(u8, it_a.?, it_b.?)) return false;
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}
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return it_a == null and it_b == null;
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}
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pub fn lowerInPlace(str: []u8) void {
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const view = View.init(str) catch return;
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var iter = view.iterator();
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var it = iter.nextCodepointSlice();
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while (it != null) : (it = iter.nextCodepointSlice()) {
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if (isAscii(it.?[0])) it.?[0] = toLower(it.?[0]);
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}
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}
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};
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const HeaderMap = std.HashMap([]const u8, []const u8, struct {
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pub fn eql(_: @This(), a: []const u8, b: []const u8) bool {
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return ciutf8.eql(a, b);
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127
src/util.zig
Normal file
127
src/util.zig
Normal file
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@ -0,0 +1,127 @@
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const std = @import("std");
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const root = @import("root");
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pub const Uuid = struct {
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data: [16]u8,
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pub fn eql(lhs: Uuid, rhs: Uuid) bool {
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return std.mem.eql(u8, &lhs.data, &rhs.data);
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}
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pub fn format(value: Uuid, comptime _: []const u8, _: std.fmt.FormatOptions, writer: anytype) !void {
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try std.fmt.format(writer, "{x:0>2}{x:0>2}{x:0>2}{x:0>2}-{x:0>2}{x:0>2}-{x:0>2}{x:0>2}-{x:0>2}{x:0>2}-{x:0>2}{x:0>2}{x:0>2}{x:0>2}{x:0>2}{x:0>2}", .{
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value.data[0],
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value.data[1],
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value.data[2],
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value.data[3],
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value.data[4],
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value.data[5],
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value.data[6],
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value.data[7],
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value.data[8],
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value.data[9],
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value.data[10],
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value.data[11],
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value.data[12],
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value.data[13],
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value.data[14],
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value.data[15],
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});
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}
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pub const ParseError = error{
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InvalidCharacter,
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};
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pub fn parse(str: []const u8) ParseError!Uuid {
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if (str.len < 36) return error.InvalidCharacter;
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var uuid: Uuid = undefined;
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var str_i: usize = 0;
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var i: usize = 0;
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while (i < 16 and str_i < str.len) : ({
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i += 1;
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str_i += 2;
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}) {
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uuid.data[i] = std.fmt.parseInt(u8, str[str_i .. str_i + 2], 16) catch |err| switch (err) {
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error.InvalidCharacter => return error.InvalidCharacter,
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else => unreachable,
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};
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if (i == 3 or i == 5 or i == 7 or i == 9) {
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if (str[str_i + 2] != '-') return error.InvalidCharacter;
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str_i += 1;
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}
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}
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return uuid;
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}
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};
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pub const ciutf8 = struct {
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const Hash = std.hash.Wyhash;
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const View = std.unicode.Utf8View;
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const toLower = std.ascii.toLower;
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const isAscii = std.ascii.isASCII;
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const seed = 1;
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pub fn hash(str: []const u8) u64 {
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// fallback to regular hash on invalid utf8
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const view = View.init(str) catch return Hash.hash(seed, str);
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var iter = view.iterator();
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var h = Hash.init(seed);
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var it = iter.nextCodepointSlice();
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while (it != null) : (it = iter.nextCodepointSlice()) {
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if (it.?.len == 1 and isAscii(it.?[0])) {
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const ch = [1]u8{toLower(it.?[0])};
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h.update(&ch);
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} else {
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h.update(it.?);
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}
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}
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return h.final();
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}
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pub fn eql(a: []const u8, b: []const u8) bool {
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if (a.len != b.len) return false;
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const va = View.init(a) catch return std.mem.eql(u8, a, b);
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const vb = View.init(b) catch return false;
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var iter_a = va.iterator();
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var iter_b = vb.iterator();
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var it_a = iter_a.nextCodepointSlice();
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var it_b = iter_b.nextCodepointSlice();
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while (it_a != null and it_b != null) : ({
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it_a = iter_a.nextCodepointSlice();
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it_b = iter_b.nextCodepointSlice();
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}) {
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if (it_a.?.len != it_b.?.len) return false;
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if (it_a.?.len == 1) {
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if (isAscii(it_a.?[0]) and isAscii(it_b.?[0])) {
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const ch_a = toLower(it_a.?[0]);
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const ch_b = toLower(it_b.?[0]);
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if (ch_a != ch_b) return false;
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} else if (it_a.?[0] != it_b.?[0]) return false;
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} else if (!std.mem.eql(u8, it_a.?, it_b.?)) return false;
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}
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return it_a == null and it_b == null;
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}
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pub fn lowerInPlace(str: []u8) void {
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const view = View.init(str) catch return;
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var iter = view.iterator();
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var it = iter.nextCodepointSlice();
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while (it != null) : (it = iter.nextCodepointSlice()) {
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if (isAscii(it.?[0])) it.?[0] = toLower(it.?[0]);
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}
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}
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};
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