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531 lines (444 loc) · 19.3 KB
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the Apache 2.0 License.
// See the LICENSE file in the project root for more information.
//
// Copyright (c) Jeff Hardy 2011.
//
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using IronPython.Runtime;
using IronPython.Runtime.Operations;
[assembly: PythonModule("unicodedata", typeof(IronPython.Modules.unicodedata))]
namespace IronPython.Modules {
public static class unicodedata {
private static UCD ucd_5_2_0 = null;
// This is supposed to by the Unicode 3.2 database, but since .NET doesn't provide it
// just use the 5.2 one instead.
public static UCD ucd_3_2_0 {
get {
if (_ucd_3_2_0 == null) {
Interlocked.CompareExchange(ref _ucd_3_2_0, new UCD("3.2.0"), null);
}
return _ucd_3_2_0;
}
}
private static UCD _ucd_3_2_0 = null;
public static string unidata_version { get { return ucd_5_2_0.unidata_version; } }
[SpecialName]
public static void PerformModuleReload(PythonContext/*!*/ context, IDictionary/*!*/ dict) {
EnsureInitialized();
}
/// <summary>
/// Ensures that the modules is initialized so that static methods don't throw.
/// </summary>
[MemberNotNull(nameof(ucd_5_2_0))]
internal static void EnsureInitialized() {
if (ucd_5_2_0 == null) {
// This is a lie. The version of Unicode depends on the .NET version as well as the OS. The
// version of the database stored internally is 5.2, so just say that.
Interlocked.CompareExchange(ref ucd_5_2_0, new UCD("5.2.0"), null);
}
}
public static string lookup(string name) {
return ucd_5_2_0.lookup(name);
}
#nullable enable
public static string name([NotNone] string unichr)
=> ucd_5_2_0.name(unichr);
public static object? name([NotNone] string unichr, object? @default)
=> ucd_5_2_0.name(unichr, @default);
internal static bool TryGetName(int rune, [NotNullWhen(true)] out string? name)
=> ucd_5_2_0.TryGetName(rune, out name);
#nullable restore
public static int @decimal(char unichr, int @default) {
return ucd_5_2_0.@decimal(unichr, @default);
}
public static int @decimal(char unichr) {
return ucd_5_2_0.@decimal(unichr);
}
public static object @decimal(char unichr, object @default) {
return ucd_5_2_0.@decimal(unichr, @default);
}
public static int digit(char unichr, int @default) {
return ucd_5_2_0.digit(unichr, @default);
}
public static object digit(char unichr, object @default) {
return ucd_5_2_0.digit(unichr, @default);
}
public static int digit(char unichr) {
return ucd_5_2_0.digit(unichr);
}
public static double numeric(char unichr, double @default) {
return ucd_5_2_0.numeric(unichr, @default);
}
public static double numeric(char unichr) {
return ucd_5_2_0.numeric(unichr);
}
public static object numeric(char unichr, object @default) {
return ucd_5_2_0.numeric(unichr, @default);
}
public static string category(char unichr) {
return ucd_5_2_0.category(unichr);
}
public static string bidirectional(char unichr) {
return ucd_5_2_0.bidirectional(unichr);
}
public static int combining(char unichr) {
return ucd_5_2_0.combining(unichr);
}
public static string east_asian_width(char unichr) {
return ucd_5_2_0.east_asian_width(unichr);
}
public static int mirrored(char unichr) {
return ucd_5_2_0.mirrored(unichr);
}
public static string decomposition(char unichr) {
return ucd_5_2_0.decomposition(unichr);
}
public static string normalize(string form, string unistr) {
return ucd_5_2_0.normalize(form, unistr);
}
[PythonType("unicodedata.UCD")]
public class UCD {
private const string UnicodedataResourceName = "IronPython.Modules.unicodedata.IPyUnicodeData.txt.gz";
private const string OtherNotAssigned = "Cn";
private Dictionary<int, CharInfo> database;
private List<RangeInfo> ranges;
private Dictionary<string, int> nameLookup;
public UCD(string version) {
unidata_version = version;
EnsureLoaded();
}
public string unidata_version { get; private set; }
public string lookup(string name) {
if (TryLookup(name, out int code))
return char.ConvertFromUtf32(code);
throw PythonOps.KeyError("undefined character name");
}
private static bool IsUnifiedIdeograph(int code) {
return (0x3400 <= code && code <= 0x4DB5) || // CJK Ideograph Extension A
(0x4E00 <= code && code <= 0x9FEF) || // CJK Ideograph
(0x20000 <= code && code <= 0x2A6D6) || // CJK Ideograph Extension B
(0x2A700 <= code && code <= 0x2B734) || // CJK Ideograph Extension C - 5.2
(0x2B740 <= code && code <= 0x2B81D) || // CJK Ideograph Extension D - 6.0
(0x2B820 <= code && code <= 0x2CEA1) || // CJK Ideograph Extension E - 8.0
(0x2CEB0 <= code && code <= 0x2EBEF) || // CJK Ideograph Extension F - 10.0
(0x30000 <= code && code <= 0x3134A); // CJK Ideograph Extension G - 13.0
}
private bool TryLookup(string name, out int code) {
code = 0;
if (name.StartsWith("CJK UNIFIED IDEOGRAPH-", StringComparison.Ordinal)) {
var val = name.AsSpan(22);
if (val.Length != 4 && val.Length != 5) return false;
foreach (var c in val) {
code *= 16;
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
code += c - '0';
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
code += c - 'A' + 10;
break;
default:
code = 0;
return false;
}
}
return IsUnifiedIdeograph(code);
}
return nameLookup.TryGetValue(name, out code);
}
#nullable enable
public string name([NotNone] string unichr)
=> TryGetName(GetRune(unichr), out var name) ? name : throw PythonOps.ValueError("no such name");
public object? name([NotNone] string unichr, object? @default)
=> TryGetName(GetRune(unichr), out var name) ? name : @default;
internal bool TryGetName(int rune, [NotNullWhen(true)] out string? name) {
if (IsUnifiedIdeograph(rune)) {
name = $"CJK UNIFIED IDEOGRAPH-{rune:X}";
return true;
}
if (TryGetInfo(rune, out CharInfo info, excludeRanges: true)) {
name = info.Name;
return true;
}
name = null;
return false;
}
private int GetRune(string unichr) {
if (unichr.Length == 1) {
return unichr[0];
} else if (unichr.Length == 2 && char.IsSurrogatePair(unichr, 0)) {
return char.ConvertToUtf32(unichr, 0);
}
throw PythonOps.TypeError("argument 1 must be a unicode character, not str");
}
#nullable restore
public int @decimal(char unichr, int @default) {
if (TryGetInfo(unichr, out CharInfo info)) {
var d = info.Numeric_Value_Decimal;
if (d.HasValue) {
return d.Value;
}
}
return @default;
}
public int @decimal(char unichr) {
if (TryGetInfo(unichr, out CharInfo info)) {
var d = info.Numeric_Value_Decimal;
if (d.HasValue) {
return d.Value;
}
}
throw PythonOps.ValueError("not a decimal");
}
public object @decimal(char unichr, object @default) {
if (TryGetInfo(unichr, out CharInfo info)) {
var d = info.Numeric_Value_Decimal;
if (d.HasValue) {
return d.Value;
}
}
return @default;
}
public int digit(char unichr, int @default) {
if (TryGetInfo(unichr, out CharInfo info)) {
var d = info.Numeric_Value_Digit;
if (d.HasValue) {
return d.Value;
}
}
return @default;
}
public object digit(char unichr, object @default) {
if (TryGetInfo(unichr, out CharInfo info)) {
var d = info.Numeric_Value_Digit;
if (d.HasValue) {
return d.Value;
}
}
return @default;
}
public int digit(char unichr) {
if (TryGetInfo(unichr, out CharInfo info)) {
var d = info.Numeric_Value_Digit;
if (d.HasValue) {
return d.Value;
}
}
throw PythonOps.ValueError("not a digit");
}
public double numeric(char unichr, double @default) {
if (TryGetInfo(unichr, out CharInfo info)) {
var d = info.Numeric_Value_Numeric;
if (d.HasValue) {
return d.Value;
}
}
return @default;
}
public double numeric(char unichr) {
if (TryGetInfo(unichr, out CharInfo info)) {
var d = info.Numeric_Value_Numeric;
if (d.HasValue) {
return d.Value;
}
}
throw PythonOps.ValueError("not a numeric character");
}
public object numeric(char unichr, object @default) {
if (TryGetInfo(unichr, out CharInfo info)) {
var d = info.Numeric_Value_Numeric;
if (d.HasValue) {
return d.Value;
}
}
return @default;
}
public string category(char unichr) {
if (TryGetInfo(unichr, out CharInfo info))
return info.General_Category;
return OtherNotAssigned;
}
public string bidirectional(char unichr) {
if (TryGetInfo(unichr, out CharInfo info))
return info.Bidi_Class;
return string.Empty;
}
public int combining(char unichr) {
if (TryGetInfo(unichr, out CharInfo info))
return info.Canonical_Combining_Class;
return 0;
}
public string east_asian_width(char unichr) {
if (TryGetInfo(unichr, out CharInfo info))
return info.East_Asian_Width;
return string.Empty;
}
public int mirrored(char unichr) {
if (TryGetInfo(unichr, out CharInfo info))
return info.Bidi_Mirrored;
return 0;
}
public string decomposition(char unichr) {
if (TryGetInfo(unichr, out CharInfo info))
return info.Decomposition_Type;
return string.Empty;
}
public string normalize(string form, string unistr) {
NormalizationForm nf;
switch (form) {
case "NFC":
nf = NormalizationForm.FormC;
break;
case "NFD":
nf = NormalizationForm.FormD;
break;
case "NFKC":
nf = NormalizationForm.FormKC;
break;
case "NFKD":
nf = NormalizationForm.FormKD;
break;
default:
throw new ArgumentException("Invalid normalization form " + form, nameof(form));
}
return unistr.Normalize(nf);
}
private void BuildDatabase(StreamReader data) {
var sep = new char[] { ';' };
database = new Dictionary<int, CharInfo>();
ranges = new List<RangeInfo>();
foreach (string raw_line in data.ReadLines()) {
int n = raw_line.IndexOf('#');
string line = n == -1 ? raw_line : raw_line.Substring(raw_line.Length - n).Trim();
if (string.IsNullOrEmpty(line))
continue;
var info = line.Split(sep, 2);
var m = Regex.Match(info[0], @"([0-9a-fA-F]{4})\.\.([0-9a-fA-F]{4})");
if (m.Success) {
// this is a character range
int first = Convert.ToInt32(m.Groups[1].Value, 16);
int last = Convert.ToInt32(m.Groups[2].Value, 16);
ranges.Add(new RangeInfo(first, last, info[1].Split(sep)));
} else {
// this is a single character
database[Convert.ToInt32(info[0], 16)] = new CharInfo(info[1].Split(sep));
}
}
}
private void BuildNameLookup() {
nameLookup = database.Where(c => !c.Value.Name.StartsWith("<", StringComparison.Ordinal)).ToDictionary(c => c.Value.Name, c => c.Key, StringComparer.OrdinalIgnoreCase);
}
internal bool TryGetInfo(int unichr, out CharInfo charInfo, bool excludeRanges = false) {
if (database.TryGetValue(unichr, out charInfo)) return true;
if (!excludeRanges) {
foreach (var range in ranges) {
if (range.First <= unichr && unichr <= range.Last) {
charInfo = range;
return true;
}
}
}
return false;
}
private void EnsureLoaded() {
if (database == null || nameLookup == null) {
var rsrc = typeof(unicodedata).Assembly.GetManifestResourceStream(UnicodedataResourceName);
var gzip = new GZipStream(rsrc, CompressionMode.Decompress);
var data = new StreamReader(gzip, Encoding.UTF8);
BuildDatabase(data);
BuildNameLookup();
}
}
}
}
internal static class StreamReaderExtensions {
public static IEnumerable<string> ReadLines(this StreamReader reader) {
string line;
while ((line = reader.ReadLine()) != null)
yield return line;
}
}
internal class CharInfo {
internal CharInfo(string[] info) {
Name = info[PropertyIndex.Name].ToUpperInvariant();
General_Category = info[PropertyIndex.General_Category];
Canonical_Combining_Class = int.Parse(info[PropertyIndex.Canonical_Combining_Class]);
Bidi_Class = info[PropertyIndex.Bidi_Class];
Decomposition_Type = info[PropertyIndex.Decomposition_Type];
string nvdes = info[PropertyIndex.Numeric_Value_Decimal];
Numeric_Value_Decimal = nvdes != "" ? (int?)int.Parse(nvdes) : null;
string nvdis = info[PropertyIndex.Numeric_Value_Digit];
Numeric_Value_Digit = nvdis != "" ? (int?)int.Parse(nvdis) : null;
string nvns = info[PropertyIndex.Numeric_Value_Numeric];
if (nvns != "") {
string[] nvna = nvns.Split(new char[] { '/' });
double num = double.Parse(nvna[0]);
if (nvna.Length > 1) {
double den = double.Parse(nvna[1]);
num /= den;
}
Numeric_Value_Numeric = num;
} else {
Numeric_Value_Numeric = null;
}
Bidi_Mirrored = info[PropertyIndex.Bidi_Mirrored] == "Y" ? 1 : 0;
East_Asian_Width = info[PropertyIndex.East_Asian_Width];
}
internal readonly string Name;
internal readonly string General_Category;
internal readonly int Canonical_Combining_Class;
internal readonly string Bidi_Class;
internal readonly string Decomposition_Type;
internal readonly int? Numeric_Value_Decimal;
internal readonly int? Numeric_Value_Digit;
internal readonly double? Numeric_Value_Numeric;
internal readonly int Bidi_Mirrored;
internal readonly string East_Asian_Width;
private static class PropertyIndex {
internal const int Name = 0;
internal const int General_Category = 1;
internal const int Canonical_Combining_Class = 2;
internal const int Bidi_Class = 3;
internal const int Decomposition_Type = 4;
internal const int Numeric_Value_Decimal = 5;
internal const int Numeric_Value_Digit = 6;
internal const int Numeric_Value_Numeric = 7;
internal const int Bidi_Mirrored = 8;
internal const int East_Asian_Width = 9;
}
}
internal class RangeInfo : CharInfo {
internal RangeInfo(int first, int last, string[] info)
: base(info) {
this.First = first;
this.Last = last;
}
internal readonly int First;
internal readonly int Last;
}
}