#!/usr/bin/env python3
# A little utility to dump ranges of unicode glyphs to visually
# compare terminal/glyph output.
# based on https://github.com/bew/dotfiles/blob/0de029ce22/bin/unicode-dump
import argparse

UNICODE_BLOCKS = {
    "Powerline": (0xe0b0, 0xe0d4),
    "Basic Latin": (0x0000, 0x007F),
    "Latin-1 Supplement": (0x0080, 0x00FF),
    "Latin Extended-A": (0x0100, 0x017F),
    "Latin Extended-B": (0x0180, 0x024F),
    "IPA Extensions": (0x0250, 0x02AF),
    "Spacing Modifier Letters": (0x02B0, 0x02FF),
    "Combining Diacritical Marks": (0x0300, 0x036F),
    "Greek and Coptic": (0x0370, 0x03FF),
    "Cyrillic": (0x0400, 0x04FF),
    "Cyrillic Supplement": (0x0500, 0x052F),
    "Armenian": (0x0530, 0x058F),
    "Hebrew": (0x0590, 0x05FF),
    "Arabic": (0x0600, 0x06FF),
    "Syriac": (0x0700, 0x074F),
    "Arabic Supplement": (0x0750, 0x077F),
    "Thaana": (0x0780, 0x07BF),
    "NKo": (0x07C0, 0x07FF),
    "Samaritan": (0x0800, 0x083F),
    "Mandaic": (0x0840, 0x085F),
    "Syriac Supplement": (0x0860, 0x086F),
    "Arabic Extended-A": (0x08A0, 0x08FF),
    "Devanagari": (0x0900, 0x097F),
    "Bengali": (0x0980, 0x09FF),
    "Gurmukhi": (0x0A00, 0x0A7F),
    "Gujarati": (0x0A80, 0x0AFF),
    "Oriya": (0x0B00, 0x0B7F),
    "Tamil": (0x0B80, 0x0BFF),
    "Telugu": (0x0C00, 0x0C7F),
    "Kannada": (0x0C80, 0x0CFF),
    "Malayalam": (0x0D00, 0x0D7F),
    "Sinhala": (0x0D80, 0x0DFF),
    "Thai": (0x0E00, 0x0E7F),
    "Lao": (0x0E80, 0x0EFF),
    "Tibetan": (0x0F00, 0x0FFF),
    "Myanmar": (0x1000, 0x109F),
    "Georgian": (0x10A0, 0x10FF),
    "Hangul Jamo": (0x1100, 0x11FF),
    "Ethiopic": (0x1200, 0x137F),
    "Ethiopic Supplement": (0x1380, 0x139F),
    "Cherokee": (0x13A0, 0x13FF),
    "Unified Canadian Aboriginal Syllabics": (0x1400, 0x167F),
    "Ogham": (0x1680, 0x169F),
    "Runic": (0x16A0, 0x16FF),
    "Tagalog": (0x1700, 0x171F),
    "Hanunoo": (0x1720, 0x173F),
    "Buhid": (0x1740, 0x175F),
    "Tagbanwa": (0x1760, 0x177F),
    "Khmer": (0x1780, 0x17FF),
    "Mongolian": (0x1800, 0x18AF),
    "Unified Canadian Aboriginal Syllabics Extended": (0x18B0, 0x18FF),
    "Limbu": (0x1900, 0x194F),
    "Tai Le": (0x1950, 0x197F),
    "New Tai Lue": (0x1980, 0x19DF),
    "Khmer Symbols": (0x19E0, 0x19FF),
    "Buginese": (0x1A00, 0x1A1F),
    "Tai Tham": (0x1A20, 0x1AAF),
    "Combining Diacritical Marks Extended": (0x1AB0, 0x1AFF),
    "Balinese": (0x1B00, 0x1B7F),
    "Sundanese": (0x1B80, 0x1BBF),
    "Batak": (0x1BC0, 0x1BFF),
    "Lepcha": (0x1C00, 0x1C4F),
    "Ol Chiki": (0x1C50, 0x1C7F),
    "Cyrillic Extended C": (0x1C80, 0x1C8F),
    "Georgian Extended": (0x1C90, 0x1CBF),
    "Sundanese Supplement": (0x1CC0, 0x1CCF),
    "Vedic Extensions": (0x1CD0, 0x1CFF),
    "Phonetic Extensions": (0x1D00, 0x1D7F),
    "Phonetic Extensions Supplement": (0x1D80, 0x1DBF),
    "Combining Diacritical Marks Supplement": (0x1DC0, 0x1DFF),
    "Latin Extended Additional": (0x1E00, 0x1EFF),
    "Greek Extended": (0x1F00, 0x1FFF),
    "General Punctuation": (0x2000, 0x206F),
    "Superscripts and Subscripts": (0x2070, 0x209F),
    "Currency Symbols": (0x20A0, 0x20CF),
    "Combining Diacritical Marks for Symbols": (0x20D0, 0x20FF),
    "Letterlike Symbols": (0x2100, 0x214F),
    "Number Forms": (0x2150, 0x218F),
    "Arrows": (0x2190, 0x21FF),
    "Mathematical Operators": (0x2200, 0x22FF),
    "Miscellaneous Technical": (0x2300, 0x23FF),
    "Control Pictures": (0x2400, 0x243F),
    "Optical Character Recognition": (0x2440, 0x245F),
    "Enclosed Alphanumerics": (0x2460, 0x24FF),
    "Box Drawing": (0x2500, 0x257F),
    "Block Elements": (0x2580, 0x259F),
    "Geometric Shapes": (0x25A0, 0x25FF),
    "Miscellaneous Symbols": (0x2600, 0x26FF),
    "Dingbats": (0x2700, 0x27BF),
    "Miscellaneous Mathematical Symbols-A": (0x27C0, 0x27EF),
    "Supplemental Arrows-A": (0x27F0, 0x27FF),
    "Braille Patterns": (0x2800, 0x28FF),
    "Supplemental Arrows-B": (0x2900, 0x297F),
    "Miscellaneous Mathematical Symbols-B": (0x2980, 0x29FF),
    "Supplemental Mathematical Operators": (0x2A00, 0x2AFF),
    "Miscellaneous Symbols and Arrows": (0x2B00, 0x2BFF),
    "Glagolitic": (0x2C00, 0x2C5F),
    "Latin Extended-C": (0x2C60, 0x2C7F),
    "Coptic": (0x2C80, 0x2CFF),
    "Georgian Supplement": (0x2D00, 0x2D2F),
    "Tifinagh": (0x2D30, 0x2D7F),
    "Ethiopic Extended": (0x2D80, 0x2DDF),
    "Cyrillic Extended-A": (0x2DE0, 0x2DFF),
    "Supplemental Punctuation": (0x2E00, 0x2E7F),
    "CJK Radicals Supplement": (0x2E80, 0x2EFF),
    "Kangxi Radicals": (0x2F00, 0x2FDF),
    "Ideographic Description Characters": (0x2FF0, 0x2FFF),
    "CJK Symbols and Punctuation": (0x3000, 0x303F),
    "Hiragana": (0x3040, 0x309F),
    "Katakana": (0x30A0, 0x30FF),
    "Bopomofo": (0x3100, 0x312F),
    "Hangul Compatibility Jamo": (0x3130, 0x318F),
    "Kanbun": (0x3190, 0x319F),
    "Bopomofo Extended": (0x31A0, 0x31BF),
    "CJK Strokes": (0x31C0, 0x31EF),
    "Katakana Phonetic Extensions": (0x31F0, 0x31FF),
    "Enclosed CJK Letters and Months": (0x3200, 0x32FF),
    "CJK Compatibility": (0x3300, 0x33FF),
    "CJK Unified Ideographs Extension A": (0x3400, 0x4DBF),
    "Yijing Hexagram Symbols": (0x4DC0, 0x4DFF),
    "CJK Unified Ideographs": (0x4E00, 0x9FFF),
    "Yi Syllables": (0xA000, 0xA48F),
    "Yi Radicals": (0xA490, 0xA4CF),
    "Lisu": (0xA4D0, 0xA4FF),
    "Vai": (0xA500, 0xA63F),
    "Cyrillic Extended-B": (0xA640, 0xA69F),
    "Bamum": (0xA6A0, 0xA6FF),
    "Modifier Tone Letters": (0xA700, 0xA71F),
    "Latin Extended-D": (0xA720, 0xA7FF),
    "Syloti Nagri": (0xA800, 0xA82F),
    "Common Indic Number Forms": (0xA830, 0xA83F),
    "Phags-pa": (0xA840, 0xA87F),
    "Saurashtra": (0xA880, 0xA8DF),
    "Devanagari Extended": (0xA8E0, 0xA8FF),
    "Kayah Li": (0xA900, 0xA92F),
    "Rejang": (0xA930, 0xA95F),
    "Hangul Jamo Extended-A": (0xA960, 0xA97F),
    "Javanese": (0xA980, 0xA9DF),
    "Myanmar Extended-B": (0xA9E0, 0xA9FF),
    "Cham": (0xAA00, 0xAA5F),
    "Myanmar Extended-A": (0xAA60, 0xAA7F),
    "Tai Viet": (0xAA80, 0xAADF),
    "Meetei Mayek Extensions": (0xAAE0, 0xAAFF),
    "Ethiopic Extended-A": (0xAB00, 0xAB2F),
    "Latin Extended-E": (0xAB30, 0xAB6F),
    "Cherokee Supplement": (0xAB70, 0xABBF),
    "Meetei Mayek": (0xABC0, 0xABFF),
    "Hangul Syllables": (0xAC00, 0xD7AF),
    "Hangul Jamo Extended-B": (0xD7B0, 0xD7FF),
    "High Surrogates": (0xD800, 0xDB7F),
    "High Private Use Surrogates": (0xDB80, 0xDBFF),
    "Low Surrogates": (0xDC00, 0xDFFF),
    "Private Use Area": (0xE000, 0xF8FF),
    "CJK Compatibility Ideographs": (0xF900, 0xFAFF),
    "Alphabetic Presentation Forms": (0xFB00, 0xFB4F),
    "Arabic Presentation Forms-A": (0xFB50, 0xFDFF),
    "Variation Selectors": (0xFE00, 0xFE0F),
    "Vertical Forms": (0xFE10, 0xFE1F),
    "Combining Half Marks": (0xFE20, 0xFE2F),
    "CJK Compatibility Forms": (0xFE30, 0xFE4F),
    "Small Form Variants": (0xFE50, 0xFE6F),
    "Arabic Presentation Forms-B": (0xFE70, 0xFEFF),
    "Halfwidth and Fullwidth Forms": (0xFF00, 0xFFEF),
    "Specials": (0xFFF0, 0xFFFF),
    "Linear B Syllabary": (0x10000, 0x1007F),
    "Linear B Ideograms": (0x10080, 0x100FF),
    "Aegean Numbers": (0x10100, 0x1013F),
    "Ancient Greek Numbers": (0x10140, 0x1018F),
    "Ancient Symbols": (0x10190, 0x101CF),
    "Phaistos Disc": (0x101D0, 0x101FF),
    "Lycian": (0x10280, 0x1029F),
    "Carian": (0x102A0, 0x102DF),
    "Coptic Epact Numbers": (0x102E0, 0x102FF),
    "Old Italic": (0x10300, 0x1032F),
    "Gothic": (0x10330, 0x1034F),
    "Old Permic": (0x10350, 0x1037F),
    "Ugaritic": (0x10380, 0x1039F),
    "Old Persian": (0x103A0, 0x103DF),
    "Deseret": (0x10400, 0x1044F),
    "Shavian": (0x10450, 0x1047F),
    "Osmanya": (0x10480, 0x104AF),
    "Osage": (0x104B0, 0x104FF),
    "Elbasan": (0x10500, 0x1052F),
    "Caucasian Albanian": (0x10530, 0x1056F),
    "Linear A": (0x10600, 0x1077F),
    "Cypriot Syllabary": (0x10800, 0x1083F),
    "Imperial Aramaic": (0x10840, 0x1085F),
    "Palmyrene": (0x10860, 0x1087F),
    "Nabataean": (0x10880, 0x108AF),
    "Hatran": (0x108E0, 0x108FF),
    "Phoenician": (0x10900, 0x1091F),
    "Lydian": (0x10920, 0x1093F),
    "Meroitic Hieroglyphs": (0x10980, 0x1099F),
    "Meroitic Cursive": (0x109A0, 0x109FF),
    "Kharoshthi": (0x10A00, 0x10A5F),
    "Old South Arabian": (0x10A60, 0x10A7F),
    "Old North Arabian": (0x10A80, 0x10A9F),
    "Manichaean": (0x10AC0, 0x10AFF),
    "Avestan": (0x10B00, 0x10B3F),
    "Inscriptional Parthian": (0x10B40, 0x10B5F),
    "Inscriptional Pahlavi": (0x10B60, 0x10B7F),
    "Psalter Pahlavi": (0x10B80, 0x10BAF),
    "Old Turkic": (0x10C00, 0x10C4F),
    "Old Hungarian": (0x10C80, 0x10CFF),
    "Hanifi Rohingya": (0x10D00, 0x10D3F),
    "Rumi Numeral Symbols": (0x10E60, 0x10E7F),
    "Yezidi": (0x10E80, 0x10EBF),
    "Old Sogdian": (0x10F00, 0x10F2F),
    "Sogdian": (0x10F30, 0x10F6F),
    "Chorasmian": (0x10FB0, 0x10FDF),
    "Elymaic": (0x10FE0, 0x10FFF),
    "Brahmi": (0x11000, 0x1107F),
    "Kaithi": (0x11080, 0x110CF),
    "Sora Sompeng": (0x110D0, 0x110FF),
    "Chakma": (0x11100, 0x1114F),
    "Mahajani": (0x11150, 0x1117F),
    "Sharada": (0x11180, 0x111DF),
    "Sinhala Archaic Numbers": (0x111E0, 0x111FF),
    "Khojki": (0x11200, 0x1124F),
    "Multani": (0x11280, 0x112AF),
    "Khudawadi": (0x112B0, 0x112FF),
    "Grantha": (0x11300, 0x1137F),
    "Newa": (0x11400, 0x1147F),
    "Tirhuta": (0x11480, 0x114DF),
    "Siddham": (0x11580, 0x115FF),
    "Modi": (0x11600, 0x1165F),
    "Mongolian Supplement": (0x11660, 0x1167F),
    "Takri": (0x11680, 0x116CF),
    "Ahom": (0x11700, 0x1173F),
    "Dogra": (0x11800, 0x1184F),
    "Warang Citi": (0x118A0, 0x118FF),
    "Dives Akuru": (0x11900, 0x1195F),
    "Nandinagari": (0x119A0, 0x119FF),
    "Zanabazar Square": (0x11A00, 0x11A4F),
    "Soyombo": (0x11A50, 0x11AAF),
    "Pau Cin Hau": (0x11AC0, 0x11AFF),
    "Bhaiksuki": (0x11C00, 0x11C6F),
    "Marchen": (0x11C70, 0x11CBF),
    "Masaram Gondi": (0x11D00, 0x11D5F),
    "Gunjala Gondi": (0x11D60, 0x11DAF),
    "Makasar": (0x11EE0, 0x11EFF),
    "Lisu Supplement": (0x11FB0, 0x11FBF),
    "Tamil Supplement": (0x11FC0, 0x11FFF),
    "Cuneiform": (0x12000, 0x123FF),
    "Cuneiform Numbers and Punctuation": (0x12400, 0x1247F),
    "Early Dynastic Cuneiform": (0x12480, 0x1254F),
    "Egyptian Hieroglyphs": (0x13000, 0x1342F),
    "Egyptian Hieroglyph Format Controls": (0x13430, 0x1343F),
    "Anatolian Hieroglyphs": (0x14400, 0x1467F),
    "Bamum Supplement": (0x16800, 0x16A3F),
    "Mro": (0x16A40, 0x16A6F),
    "Bassa Vah": (0x16AD0, 0x16AFF),
    "Pahawh Hmong": (0x16B00, 0x16B8F),
    "Medefaidrin": (0x16E40, 0x16E9F),
    "Miao": (0x16F00, 0x16F9F),
    "Ideographic Symbols and Punctuation": (0x16FE0, 0x16FFF),
    "Tangut": (0x17000, 0x187FF),
    "Tangut Components": (0x18800, 0x18AFF),
    "Khitan Small Script": (0x18B00, 0x18CFF),
    "Tangut Supplement": (0x18D00, 0x18D8F),
    "Kana Supplement": (0x1B000, 0x1B0FF),
    "Kana Extended-A": (0x1B100, 0x1B12F),
    "Small Kana Extension": (0x1B130, 0x1B16F),
    "Nushu": (0x1B170, 0x1B2FF),
    "Duployan": (0x1BC00, 0x1BC9F),
    "Shorthand Format Controls": (0x1BCA0, 0x1BCAF),
    "Byzantine Musical Symbols": (0x1D000, 0x1D0FF),
    "Musical Symbols": (0x1D100, 0x1D1FF),
    "Ancient Greek Musical Notation": (0x1D200, 0x1D24F),
    "Mayan Numerals": (0x1D2E0, 0x1D2FF),
    "Tai Xuan Jing Symbols": (0x1D300, 0x1D35F),
    "Counting Rod Numerals": (0x1D360, 0x1D37F),
    "Mathematical Alphanumeric Symbols": (0x1D400, 0x1D7FF),
    "Sutton SignWriting": (0x1D800, 0x1DAAF),
    "Glagolitic Supplement": (0x1E000, 0x1E02F),
    "Nyiakeng Puachue Hmong": (0x1E100, 0x1E14F),
    "Wancho": (0x1E2C0, 0x1E2FF),
    "Mende Kikakui": (0x1E800, 0x1E8DF),
    "Adlam": (0x1E900, 0x1E95F),
    "Indic Siyaq Numbers": (0x1EC70, 0x1ECBF),
    "Ottoman Siyaq Numbers": (0x1ED00, 0x1ED4F),
    "Arabic Mathematical Alphabetic Symbols": (0x1EE00, 0x1EEFF),
    "Mahjong Tiles": (0x1F000, 0x1F02F),
    "Domino Tiles": (0x1F030, 0x1F09F),
    "Playing Cards": (0x1F0A0, 0x1F0FF),
    "Enclosed Alphanumeric Supplement": (0x1F100, 0x1F1FF),
    "Enclosed Ideographic Supplement": (0x1F200, 0x1F2FF),
    "Miscellaneous Symbols and Pictographs": (0x1F300, 0x1F5FF),
    "Emoticons (Emoji)": (0x1F600, 0x1F64F),
    "Ornamental Dingbats": (0x1F650, 0x1F67F),
    "Transport and Map Symbols": (0x1F680, 0x1F6FF),
    "Alchemical Symbols": (0x1F700, 0x1F77F),
    "Geometric Shapes Extended": (0x1F780, 0x1F7FF),
    "Supplemental Arrows-C": (0x1F800, 0x1F8FF),
    "Supplemental Symbols and Pictographs": (0x1F900, 0x1F9FF),
    "Chess Symbols": (0x1FA00, 0x1FA6F),
    "Symbols and Pictographs Extended-A": (0x1FA70, 0x1FAFF),
    "Symbols for Legacy Computing": (0x1FB00, 0x1FBFF),
    "CJK Unified Ideographs Extension B": (0x20000, 0x2A6DF),
    "CJK Unified Ideographs Extension C": (0x2A700, 0x2B73F),
    "CJK Unified Ideographs Extension D": (0x2B740, 0x2B81F),
    "CJK Unified Ideographs Extension E": (0x2B820, 0x2CEAF),
    "CJK Unified Ideographs Extension F": (0x2CEB0, 0x2EBEF),
    "CJK Compatibility Ideographs Supplement": (0x2F800, 0x2FA1F),
    "CJK Unified Ideographs Extension G": (0x30000, 0x3134F),
    "Tags": (0xE0000, 0xE007F),
    "Variation Selectors Supplement": (0xE0100, 0xE01EF),
    "Supplementary Private Use Area-A": (0xF0000, 0xFFFFF),
    "Supplementary Private Use Area-B": (0x100000, 0x10FFFF),
}

def resolve_block_name(name):
    lname = name.lower()
    candidates = []
    for k in UNICODE_BLOCKS.keys():
        if lname in k.lower():
            candidates.append(k)
    if len(candidates) == 0:
        raise KeyError("{} is not a valid block name".format(name))
    if len(candidates) == 1:
        return candidates[0]
    raise KeyError("{} could match {}".format(name, ", ".join(candidates)))

def print_range(start, end):
    print("0x{:x} -> 0x{:x}".format(start, end))
    is_alt = False
    for cp in range(start, end+1):
        if cp & 0x1f == 0:
            if is_alt:
                print("\n\x1b[44m", end='')
            else:
                print("\n\x1b[0m", end='')
            is_alt = not is_alt
        print(chr(cp), end=' ')
    print("\x1b[0m")

def do_show_range(args):
    print_range(int(args.start, 0), int(args.end, 0))

def do_show_block(args):
    name = resolve_block_name(args.name)
    print("Showing glyphs in `{}`".format(name))
    (start, end) = UNICODE_BLOCKS[name]
    print_range(start, end)

def do_list_blocks(args):
    print("\n".join(sorted(list(UNICODE_BLOCKS.keys()))))

parser = argparse.ArgumentParser()
sub = parser.add_subparsers()

show_block = sub.add_parser("show-block", help="print glyphs in named block")
show_block.add_argument("name")
show_block.set_defaults(func=do_show_block)

list_blocks = sub.add_parser("list-blocks", help="list unicode blocks")
list_blocks.set_defaults(func=do_list_blocks)

show_range = sub.add_parser("show-range", help="print glyphs in a range")
show_range.add_argument('start')
show_range.add_argument('end')
show_range.set_defaults(func=do_show_range)

args = parser.parse_args()
args.func(args)

print("", flush=True)
