mirror of git://git.acid.vegas/asciiblaster.git
544 lines
19 KiB
JavaScript
544 lines
19 KiB
JavaScript
var unicode = (function(){
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var UNICODE_BLOCK_LIST = [
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0x0020, 0x007F, "Basic Latin",
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0x0080, 0x00FF, "Latin-1 Supplement",
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0x0100, 0x017F, "Latin Extended-A",
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0x0180, 0x024F, "Latin Extended-B",
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0x0250, 0x02AF, "IPA Extensions",
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0x02B0, 0x02FF, "Spacing Modifier Letters",
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0x0300, 0x036F, "Combining Diacritical Marks",
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0x0370, 0x03FF, "Greek and Coptic",
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0x0400, 0x04FF, "Cyrillic",
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0x0500, 0x052F, "Cyrillic Supplement",
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0x0530, 0x058F, "Armenian",
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0x0590, 0x05FF, "Hebrew",
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0x0600, 0x06FF, "Arabic",
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0x0700, 0x074F, "Syriac",
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0x0750, 0x077F, "Arabic Supplement",
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0x0780, 0x07BF, "Thaana",
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0x07C0, 0x07FF, "NKo",
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0x0800, 0x083F, "Samaritan",
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0x0840, 0x085F, "Mandaic",
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0x08A0, 0x08FF, "Arabic Extended-A",
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0x0900, 0x097F, "Devanagari",
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0x0980, 0x09FF, "Bengali",
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0x0A00, 0x0A7F, "Gurmukhi",
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0x0A80, 0x0AFF, "Gujarati",
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0x0B00, 0x0B7F, "Oriya",
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0x0B80, 0x0BFF, "Tamil",
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0x0C00, 0x0C7F, "Telugu",
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0x0C80, 0x0CFF, "Kannada",
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0x0D00, 0x0D7F, "Malayalam",
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0x0D80, 0x0DFF, "Sinhala",
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0x0E00, 0x0E7F, "Thai",
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0x0E80, 0x0EFF, "Lao",
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0x0F00, 0x0FFF, "Tibetan",
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0x1000, 0x109F, "Myanmar",
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0x10A0, 0x10FF, "Georgian",
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0x1100, 0x11FF, "Hangul Jamo",
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0x1200, 0x137F, "Ethiopic",
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0x1380, 0x139F, "Ethiopic Supplement",
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0x13A0, 0x13FF, "Cherokee",
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0x1400, 0x167F, "Unified Canadian Aboriginal Syllabics",
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0x1680, 0x169F, "Ogham",
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0x16A0, 0x16FF, "Runic",
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0x1700, 0x171F, "Tagalog",
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0x1720, 0x173F, "Hanunoo",
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0x1740, 0x175F, "Buhid",
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0x1760, 0x177F, "Tagbanwa",
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0x1780, 0x17FF, "Khmer",
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0x1800, 0x18AF, "Mongolian",
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0x18B0, 0x18FF, "Unified Canadian Aboriginal Syllabics Extended",
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0x1900, 0x194F, "Limbu",
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0x1950, 0x197F, "Tai Le",
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0x1980, 0x19DF, "New Tai Lue",
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0x19E0, 0x19FF, "Khmer Symbols",
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0x1A00, 0x1A1F, "Buginese",
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0x1A20, 0x1AAF, "Tai Tham",
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0x1AB0, 0x1AFF, "Combining Diacritical Marks Extended",
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0x1B00, 0x1B7F, "Balinese",
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0x1B80, 0x1BBF, "Sundanese",
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0x1BC0, 0x1BFF, "Batak",
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0x1C00, 0x1C4F, "Lepcha",
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0x1C50, 0x1C7F, "Ol Chiki",
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0x1CC0, 0x1CCF, "Sundanese Supplement",
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0x1CD0, 0x1CFF, "Vedic Extensions",
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0x1D00, 0x1D7F, "Phonetic Extensions",
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0x1D80, 0x1DBF, "Phonetic Extensions Supplement",
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0x1DC0, 0x1DFF, "Combining Diacritical Marks Supplement",
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0x1E00, 0x1EFF, "Latin Extended Additional",
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0x1F00, 0x1FFF, "Greek Extended",
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0x2000, 0x206F, "General Punctuation",
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0x2070, 0x209F, "Superscripts and Subscripts",
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0x20A0, 0x20CF, "Currency Symbols",
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0x20D0, 0x20FF, "Combining Diacritical Marks for Symbols",
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0x2100, 0x214F, "Letterlike Symbols",
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0x2150, 0x218F, "Number Forms",
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0x2190, 0x21FF, "Arrows",
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0x2200, 0x22FF, "Mathematical Operators",
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0x2300, 0x23FF, "Miscellaneous Technical",
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0x2400, 0x243F, "Control Pictures",
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0x2440, 0x245F, "Optical Character Recognition",
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0x2460, 0x24FF, "Enclosed Alphanumerics",
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0x2500, 0x257F, "Box Drawing",
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0x2580, 0x259F, "Block Elements",
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0x25A0, 0x25FF, "Geometric Shapes",
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0x2600, 0x26FF, "Miscellaneous Symbols",
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0x2700, 0x27BF, "Dingbats",
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0x27C0, 0x27EF, "Miscellaneous Mathematical Symbols-A",
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0x27F0, 0x27FF, "Supplemental Arrows-A",
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0x2800, 0x28FF, "Braille Patterns",
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0x2900, 0x297F, "Supplemental Arrows-B",
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0x2980, 0x29FF, "Miscellaneous Mathematical Symbols-B",
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0x2A00, 0x2AFF, "Supplemental Mathematical Operators",
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0x2B00, 0x2BFF, "Miscellaneous Symbols and Arrows",
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0x2C00, 0x2C5F, "Glagolitic",
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0x2C60, 0x2C7F, "Latin Extended-C",
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0x2C80, 0x2CFF, "Coptic",
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0x2D00, 0x2D2F, "Georgian Supplement",
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0x2D30, 0x2D7F, "Tifinagh",
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0x2D80, 0x2DDF, "Ethiopic Extended",
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0x2DE0, 0x2DFF, "Cyrillic Extended-A",
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0x2E00, 0x2E7F, "Supplemental Punctuation",
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0x2E80, 0x2EFF, "CJK Radicals Supplement",
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0x2F00, 0x2FDF, "Kangxi Radicals",
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0x2FF0, 0x2FFF, "Ideographic Description Characters",
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0x3000, 0x303F, "CJK Symbols and Punctuation",
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0x3040, 0x309F, "Hiragana",
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0x30A0, 0x30FF, "Katakana",
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0x3100, 0x312F, "Bopomofo",
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0x3130, 0x318F, "Hangul Compatibility Jamo",
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0x3190, 0x319F, "Kanbun",
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0x31A0, 0x31BF, "Bopomofo Extended",
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0x31C0, 0x31EF, "CJK Strokes",
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0x31F0, 0x31FF, "Katakana Phonetic Extensions",
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0x3200, 0x32FF, "Enclosed CJK Letters and Months",
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0x3300, 0x33FF, "CJK Compatibility",
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0x3400, 0x4DBF, "CJK Unified Ideographs Extension A",
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0x4DC0, 0x4DFF, "Yijing Hexagram Symbols",
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0x4E00, 0x9FFF, "CJK Unified Ideographs",
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0xA000, 0xA48F, "Yi Syllables",
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0xA490, 0xA4CF, "Yi Radicals",
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0xA4D0, 0xA4FF, "Lisu",
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0xA500, 0xA63F, "Vai",
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0xA640, 0xA69F, "Cyrillic Extended-B",
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0xA6A0, 0xA6FF, "Bamum",
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0xA700, 0xA71F, "Modifier Tone Letters",
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0xA720, 0xA7FF, "Latin Extended-D",
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0xA800, 0xA82F, "Syloti Nagri",
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0xA830, 0xA83F, "Common Indic Number Forms",
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0xA840, 0xA87F, "Phags-pa",
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0xA880, 0xA8DF, "Saurashtra",
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0xA8E0, 0xA8FF, "Devanagari Extended",
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0xA900, 0xA92F, "Kayah Li",
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0xA930, 0xA95F, "Rejang",
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0xA960, 0xA97F, "Hangul Jamo Extended-A",
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0xA980, 0xA9DF, "Javanese",
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0xA9E0, 0xA9FF, "Myanmar Extended-B",
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0xAA00, 0xAA5F, "Cham",
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0xAA60, 0xAA7F, "Myanmar Extended-A",
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0xAA80, 0xAADF, "Tai Viet",
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0xAAE0, 0xAAFF, "Meetei Mayek Extensions",
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0xAB00, 0xAB2F, "Ethiopic Extended-A",
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0xAB30, 0xAB6F, "Latin Extended-E",
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0xABC0, 0xABFF, "Meetei Mayek",
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0xAC00, 0xD7AF, "Hangul Syllables",
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0xD7B0, 0xD7FF, "Hangul Jamo Extended-B",
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0xD800, 0xDB7F, "High Surrogates",
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0xDB80, 0xDBFF, "High Private Use Surrogates",
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0xDC00, 0xDFFF, "Low Surrogates",
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0xE000, 0xF8FF, "Private Use Area",
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0xF900, 0xFAFF, "CJK Compatibility Ideographs",
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0xFB00, 0xFB4F, "Alphabetic Presentation Forms",
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0xFB50, 0xFDFF, "Arabic Presentation Forms-A",
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0xFE00, 0xFE0F, "Variation Selectors",
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0xFE10, 0xFE1F, "Vertical Forms",
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0xFE20, 0xFE2F, "Combining Half Marks",
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0xFE30, 0xFE4F, "CJK Compatibility Forms",
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0xFE50, 0xFE6F, "Small Form Variants",
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0xFE70, 0xFEFF, "Arabic Presentation Forms-B",
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0xFF00, 0xFFEF, "Halfwidth and Fullwidth Forms",
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0xFFF0, 0xFFFF, "Specials",
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0x10000, 0x1007F, "Linear B Syllabary",
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0x10080, 0x100FF, "Linear B Ideograms",
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0x10100, 0x1013F, "Aegean Numbers",
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0x10140, 0x1018F, "Ancient Greek Numbers",
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0x10190, 0x101CF, "Ancient Symbols",
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0x101D0, 0x101FF, "Phaistos Disc",
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0x10280, 0x1029F, "Lycian",
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0x102A0, 0x102DF, "Carian",
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0x102E0, 0x102FF, "Coptic Epact Numbers",
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0x10300, 0x1032F, "Old Italic",
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0x10330, 0x1034F, "Gothic",
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0x10350, 0x1037F, "Old Permic",
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0x10380, 0x1039F, "Ugaritic",
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0x103A0, 0x103DF, "Old Persian",
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0x10400, 0x1044F, "Deseret",
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0x10450, 0x1047F, "Shavian",
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0x10480, 0x104AF, "Osmanya",
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0x10500, 0x1052F, "Elbasan",
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0x10530, 0x1056F, "Caucasian Albanian",
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0x10600, 0x1077F, "Linear A",
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0x10800, 0x1083F, "Cypriot Syllabary",
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0x10840, 0x1085F, "Imperial Aramaic",
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0x10860, 0x1087F, "Palmyrene",
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0x10880, 0x108AF, "Nabataean",
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0x10900, 0x1091F, "Phoenician",
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0x10920, 0x1093F, "Lydian",
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0x10980, 0x1099F, "Meroitic Hieroglyphs",
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0x109A0, 0x109FF, "Meroitic Cursive",
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0x10A00, 0x10A5F, "Kharoshthi",
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0x10A60, 0x10A7F, "Old South Arabian",
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0x10A80, 0x10A9F, "Old North Arabian",
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0x10AC0, 0x10AFF, "Manichaean",
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0x10B00, 0x10B3F, "Avestan",
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0x10B40, 0x10B5F, "Inscriptional Parthian",
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0x10B60, 0x10B7F, "Inscriptional Pahlavi",
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0x10B80, 0x10BAF, "Psalter Pahlavi",
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0x10C00, 0x10C4F, "Old Turkic",
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0x10E60, 0x10E7F, "Rumi Numeral Symbols",
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0x11000, 0x1107F, "Brahmi",
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0x11080, 0x110CF, "Kaithi",
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0x110D0, 0x110FF, "Sora Sompeng",
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0x11100, 0x1114F, "Chakma",
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0x11150, 0x1117F, "Mahajani",
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0x11180, 0x111DF, "Sharada",
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0x111E0, 0x111FF, "Sinhala Archaic Numbers",
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0x11200, 0x1124F, "Khojki",
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0x112B0, 0x112FF, "Khudawadi",
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0x11300, 0x1137F, "Grantha",
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0x11480, 0x114DF, "Tirhuta",
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0x11580, 0x115FF, "Siddham",
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0x11600, 0x1165F, "Modi",
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0x11680, 0x116CF, "Takri",
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0x118A0, 0x118FF, "Warang Citi",
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0x11AC0, 0x11AFF, "Pau Cin Hau",
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0x12000, 0x123FF, "Cuneiform",
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0x12400, 0x1247F, "Cuneiform Numbers and Punctuation",
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0x13000, 0x1342F, "Egyptian Hieroglyphs",
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0x16800, 0x16A3F, "Bamum Supplement",
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0x16A40, 0x16A6F, "Mro",
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0x16AD0, 0x16AFF, "Bassa Vah",
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0x16B00, 0x16B8F, "Pahawh Hmong",
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0x16F00, 0x16F9F, "Miao",
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0x1B000, 0x1B0FF, "Kana Supplement",
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0x1BC00, 0x1BC9F, "Duployan",
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0x1BCA0, 0x1BCAF, "Shorthand Format Controls",
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0x1D000, 0x1D0FF, "Byzantine Musical Symbols",
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0x1D100, 0x1D1FF, "Musical Symbols",
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0x1D200, 0x1D24F, "Ancient Greek Musical Notation",
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0x1D300, 0x1D35F, "Tai Xuan Jing Symbols",
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0x1D360, 0x1D37F, "Counting Rod Numerals",
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0x1D400, 0x1D7FF, "Mathematical Alphanumeric Symbols",
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0x1E800, 0x1E8DF, "Mende Kikakui",
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0x1EE00, 0x1EEFF, "Arabic Mathematical Alphabetic Symbols",
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0x1F000, 0x1F02F, "Mahjong Tiles",
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0x1F030, 0x1F09F, "Domino Tiles",
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0x1F0A0, 0x1F0FF, "Playing Cards",
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0x1F100, 0x1F1FF, "Enclosed Alphanumeric Supplement",
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0x1F200, 0x1F2FF, "Enclosed Ideographic Supplement",
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0x1F300, 0x1F5FF, "Miscellaneous Symbols and Pictographs",
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0x1F600, 0x1F64F, "Emoticons",
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0x1F650, 0x1F67F, "Ornamental Dingbats",
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0x1F680, 0x1F6FF, "Transport and Map Symbols",
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0x1F700, 0x1F77F, "Alchemical Symbols",
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0x1F780, 0x1F7FF, "Geometric Shapes Extended",
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0x1F800, 0x1F8FF, "Supplemental Arrows-C",
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0x20000, 0x2A6DF, "CJK Unified Ideographs Extension B",
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0x2A700, 0x2B73F, "CJK Unified Ideographs Extension C",
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0x2B740, 0x2B81F, "CJK Unified Ideographs Extension D",
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0x2F800, 0x2FA1F, "CJK Compatibility Ideographs Supplement",
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0xE0000, 0xE007F, "Tags",
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0xE0100, 0xE01EF, "Variation Selectors Supplement",
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0xF0000, 0xFFFFF, "Supplementary Private Use Area-A",
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0x100000, 0x10FFFF, "Supplementary Private Use Area-B",
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]
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var UNICODE_BLOCK_COUNT = UNICODE_BLOCK_LIST.length / 3
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var UNICODE_LOOKUP = {}
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for (var i = 0, len = UNICODE_BLOCK_LIST.length; i < len; i += 3) {
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UNICODE_LOOKUP[ UNICODE_BLOCK_LIST[i+2] ] = [ UNICODE_BLOCK_LIST[i], UNICODE_BLOCK_LIST[i+1] ]
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}
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function index (j) {
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return [ UNICODE_BLOCK_LIST[j*3], UNICODE_BLOCK_LIST[j*3+1], UNICODE_BLOCK_LIST[j*3+2], [] ]
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}
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function range(m,n){
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if (m > n) return []
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var a = new Array (n-m)
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for (var i = 0, j = m; j <= n; i++, j++) {
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a[i] = j
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}
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return a
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}
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function paginate (a, n){
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var aa = [], ai, i = 0
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while (i < 100) {
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ai = a.slice(i * n, (i+1) * n)
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if (! ai.length) break
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aa.push(ai)
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i++
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}
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return aa
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}
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function block (name, n){
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var b = UNICODE_LOOKUP[name]
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if (! b) return ""
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return range.apply(null, b).map(function(n){ return String.fromCharCode(n) })
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}
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function entities (a) {
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return a.map(function(k){ return "&#" + k.join(";&#") + ";" }).join("<br>")
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}
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function findGroups (chars){
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var groups = [], row, list
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for (var i = 0, j = -1, next = -1, len = chars.length; i < len; i++) {
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if (chars[i] < next) {
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list.push(chars[i])
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continue
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}
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do {
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j += 1
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next = UNICODE_BLOCK_LIST[(j+1)*3]
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} while (chars[i] > next)
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row = index(j)
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list = row[3]
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groups.push( row )
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}
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return groups
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}
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// encodes unicode characters as escaped utf16 - \xFFFF
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// encodes ONLY non-ascii characters
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function escapeToUtf16 (txt) {
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var escaped_txt = "", kode
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for (var i = 0; i < txt.length; i++) {
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kode = txt.charCodeAt(i)
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if (kode > 0x7f) {
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kode = kode.toString(16)
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switch (kode.length) {
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case 2:
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kode = "0" + kode
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case 3:
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kode = "0" + kode
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}
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escaped_txt += "\\u" + kode
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}
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else {
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escaped_txt += txt[i]
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}
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}
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return escaped_txt
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}
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// encodes unicode characters as escaped bytes - \xFF
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// encodes ONLY non-ascii characters
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function escapeToEscapedBytes (txt) {
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var escaped_txt = "", kode, utf8_bytes
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for (var i = 0; i < txt.length; i++) {
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kode = txt.charCodeAt(i)
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if (kode > 0x7f) {
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utf8_bytes = convertUnicodeCodePointToUtf8Bytes(kode)
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escaped_txt += convertBytesToEscapedString(utf8_bytes, 16)
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}
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else {
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escaped_txt += txt[i]
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}
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}
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return escaped_txt
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}
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// encodes unicode characters as escaped bytes - \xFF
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// encodes an ENTIRE string
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function escapeAllToEscapedBytes(str, base) {
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var unicode_codes = convertStringToUnicodeCodePoints(str);
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var data_bytes = convertUnicodeCodePointsToBytes(unicode_codes);
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return convertBytesToEscapedString(data_bytes, 16);
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}
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// [ 0xE3, 0x81, 0x82, 0xE3, 0x81, 0x84 ] => '\xE3\x81\x82\xE3\x81\x84'
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// [ 0343, 0201, 0202, 0343, 0201, 0204 ] => '\343\201\202\343\201\204'
|
|
function convertBytesToEscapedString(data_bytes, base) {
|
|
var escaped = '';
|
|
for (var i = 0; i < data_bytes.length; ++i) {
|
|
var prefix = (base == 16 ? "\\x" : "\\");
|
|
var num_digits = base == 16 ? 2 : 3;
|
|
var escaped_byte = prefix + formatNumber(data_bytes[i], base, num_digits)
|
|
escaped += escaped_byte;
|
|
}
|
|
return escaped;
|
|
}
|
|
// [ 0x3042, 0x3044 ] => [ 0xE3, 0x81, 0x82, 0xE3, 0x81, 0x84 ]
|
|
function convertUnicodeCodePointsToBytes(unicode_codes) {
|
|
var utf8_bytes = [];
|
|
for (var i = 0; i < unicode_codes.length; ++i) {
|
|
var bytes = convertUnicodeCodePointToUtf8Bytes(unicode_codes[i]);
|
|
utf8_bytes = utf8_bytes.concat(bytes);
|
|
}
|
|
return utf8_bytes;
|
|
}
|
|
// 0x3042 => [ 0xE3, 0x81, 0x82 ]
|
|
function convertUnicodeCodePointToUtf8Bytes(unicode_code) {
|
|
var utf8_bytes = [];
|
|
if (unicode_code < 0x80) { // 1-byte
|
|
utf8_bytes.push(unicode_code);
|
|
} else if (unicode_code < (1 << 11)) { // 2-byte
|
|
utf8_bytes.push((unicode_code >>> 6) | 0xC0);
|
|
utf8_bytes.push((unicode_code & 0x3F) | 0x80);
|
|
} else if (unicode_code < (1 << 16)) { // 3-byte
|
|
utf8_bytes.push((unicode_code >>> 12) | 0xE0);
|
|
utf8_bytes.push(((unicode_code >> 6) & 0x3f) | 0x80);
|
|
utf8_bytes.push((unicode_code & 0x3F) | 0x80);
|
|
} else if (unicode_code < (1 << 21)) { // 4-byte
|
|
utf8_bytes.push((unicode_code >>> 18) | 0xF0);
|
|
utf8_bytes.push(((unicode_code >> 12) & 0x3F) | 0x80);
|
|
utf8_bytes.push(((unicode_code >> 6) & 0x3F) | 0x80);
|
|
utf8_bytes.push((unicode_code & 0x3F) | 0x80);
|
|
}
|
|
return utf8_bytes;
|
|
}
|
|
// "ã‚ã„" => [ 0x3042, 0x3044 ]
|
|
function convertStringToUnicodeCodePoints(str) {
|
|
var surrogate_1st = 0;
|
|
var unicode_codes = [];
|
|
for (var i = 0; i < str.length; ++i) {
|
|
var utf16_code = str.charCodeAt(i);
|
|
if (surrogate_1st != 0) {
|
|
if (utf16_code >= 0xDC00 && utf16_code <= 0xDFFF) {
|
|
var surrogate_2nd = utf16_code;
|
|
var unicode_code = (surrogate_1st - 0xD800) * (1 << 10) + (1 << 16) +
|
|
(surrogate_2nd - 0xDC00);
|
|
unicode_codes.push(unicode_code);
|
|
} else {
|
|
// Malformed surrogate pair ignored.
|
|
}
|
|
surrogate_1st = 0;
|
|
} else if (utf16_code >= 0xD800 && utf16_code <= 0xDBFF) {
|
|
surrogate_1st = utf16_code;
|
|
} else {
|
|
unicode_codes.push(utf16_code);
|
|
}
|
|
}
|
|
return unicode_codes;
|
|
}
|
|
// 0xff => "ff"
|
|
// 0xff => "377"
|
|
function formatNumber(number, base, num_digits) {
|
|
var str = number.toString(base).toUpperCase();
|
|
for (var i = str.length; i < num_digits; ++i) {
|
|
str = "0" + str;
|
|
}
|
|
return str;
|
|
}
|
|
|
|
// convert \xFF\xFF\xFF to unicode
|
|
function unescapeFromEscapedBytes (str) {
|
|
var data_bytes = convertEscapedBytesToBytes(str);
|
|
var unicode_codes = convertUtf8BytesToUnicodeCodePoints(data_bytes);
|
|
return convertUnicodeCodePointsToString(unicode_codes);
|
|
}
|
|
// r'\xE3\x81\x82\xE3\x81\x84' => [ 0xE3, 0x81, 0x82, 0xE3, 0x81, 0x84 ]
|
|
// r'\343\201\202\343\201\204' => [ 0343, 0201, 0202, 0343, 0201, 0204 ]
|
|
function convertEscapedBytesToBytes(str) {
|
|
var parts = str.split("\\x");
|
|
parts.shift(); // Trim the first element.
|
|
var codes = [];
|
|
var max = Math.pow(2, 8);
|
|
for (var i = 0; i < parts.length; ++i) {
|
|
var code = parseInt(parts[i], 16);
|
|
if (code >= 0 && code < max) {
|
|
codes.push(code);
|
|
} else {
|
|
// Malformed code ignored.
|
|
}
|
|
}
|
|
return codes;
|
|
}
|
|
// [ 0xE3, 0x81, 0x82, 0xE3, 0x81, 0x84 ] => [ 0x3042, 0x3044 ]
|
|
function convertUtf8BytesToUnicodeCodePoints(utf8_bytes) {
|
|
var unicode_codes = [];
|
|
var unicode_code = 0;
|
|
var num_followed = 0;
|
|
for (var i = 0; i < utf8_bytes.length; ++i) {
|
|
var utf8_byte = utf8_bytes[i];
|
|
if (utf8_byte >= 0x100) {
|
|
// Malformed utf8 byte ignored.
|
|
} else if ((utf8_byte & 0xC0) == 0x80) {
|
|
if (num_followed > 0) {
|
|
unicode_code = (unicode_code << 6) | (utf8_byte & 0x3f);
|
|
num_followed -= 1;
|
|
} else {
|
|
// Malformed UTF-8 sequence ignored.
|
|
}
|
|
} else {
|
|
if (num_followed == 0) {
|
|
unicode_codes.push(unicode_code);
|
|
} else {
|
|
// Malformed UTF-8 sequence ignored.
|
|
}
|
|
if (utf8_byte < 0x80){ // 1-byte
|
|
unicode_code = utf8_byte;
|
|
num_followed = 0;
|
|
} else if ((utf8_byte & 0xE0) == 0xC0) { // 2-byte
|
|
unicode_code = utf8_byte & 0x1f;
|
|
num_followed = 1;
|
|
} else if ((utf8_byte & 0xF0) == 0xE0) { // 3-byte
|
|
unicode_code = utf8_byte & 0x0f;
|
|
num_followed = 2;
|
|
} else if ((utf8_byte & 0xF8) == 0xF0) { // 4-byte
|
|
unicode_code = utf8_byte & 0x07;
|
|
num_followed = 3;
|
|
} else {
|
|
// Malformed UTF-8 sequence ignored.
|
|
}
|
|
}
|
|
}
|
|
if (num_followed == 0) {
|
|
unicode_codes.push(unicode_code);
|
|
} else {
|
|
// Malformed UTF-8 sequence ignored.
|
|
}
|
|
unicode_codes.shift(); // Trim the first element.
|
|
return unicode_codes;
|
|
}
|
|
// [ 0x3042, 0x3044 ] => [ 0x3042, 0x3044 ]
|
|
// [ 0xD840, 0xDC0B ] => [ 0x2000B ] // A surrogate pair.
|
|
function convertUnicodeCodePointsToUtf16Codes(unicode_codes) {
|
|
var utf16_codes = [];
|
|
for (var i = 0; i < unicode_codes.length; ++i) {
|
|
var unicode_code = unicode_codes[i];
|
|
if (unicode_code < (1 << 16)) {
|
|
utf16_codes.push(unicode_code);
|
|
} else {
|
|
var first = ((unicode_code - (1 << 16)) / (1 << 10)) + 0xD800;
|
|
var second = (unicode_code % (1 << 10)) + 0xDC00;
|
|
utf16_codes.push(first)
|
|
utf16_codes.push(second)
|
|
}
|
|
}
|
|
return utf16_codes;
|
|
}
|
|
// [ 0x3042, 0x3044 ] => "ã‚ã„"
|
|
function convertUnicodeCodePointsToString(unicode_codes) {
|
|
var utf16_codes = convertUnicodeCodePointsToUtf16Codes(unicode_codes);
|
|
return convertUtf16CodesToString(utf16_codes);
|
|
}
|
|
// [ 0x3042, 0x3044 ] => "ã‚ã„"
|
|
function convertUtf16CodesToString(utf16_codes) {
|
|
var unescaped = '';
|
|
for (var i = 0; i < utf16_codes.length; ++i) {
|
|
unescaped += String.fromCharCode(utf16_codes[i]);
|
|
}
|
|
return unescaped;
|
|
}
|
|
|
|
return {
|
|
raw: UNICODE_BLOCK_LIST,
|
|
lookup: UNICODE_LOOKUP,
|
|
index: index,
|
|
range: range,
|
|
block: block,
|
|
findGroups: findGroups,
|
|
paginate: paginate,
|
|
escapeToEscapedBytes: escapeToEscapedBytes,
|
|
unescapeFromEscapedBytes: unescapeFromEscapedBytes,
|
|
}
|
|
})()
|