diff options
| author | Karl Williamson <public@khwilliamson.com> | 2011-12-07 20:48:01 -0700 |
|---|---|---|
| committer | Karl Williamson <public@khwilliamson.com> | 2011-12-20 22:02:42 -0700 |
| commit | e7a078a08e56dd51d62bcbe5f2b82020e311a780 (patch) | |
| tree | 280a2b7f4ff349dcb0343fbc6cee06c8ecb16137 /lib/charnames.pm | |
| parent | 0bd4278638caf33618355e433372cb94a2853626 (diff) | |
| download | perl-e7a078a08e56dd51d62bcbe5f2b82020e311a780.tar.gz | |
charnames: Split into two modules
This takes the source and splits it into two modules with the only
changes those that are required to get them to work together.
This is in preparation for future commits
Diffstat (limited to 'lib/charnames.pm')
| -rw-r--r-- | lib/charnames.pm | 1134 |
1 files changed, 15 insertions, 1119 deletions
diff --git a/lib/charnames.pm b/lib/charnames.pm index 990820058b..68b022d445 100644 --- a/lib/charnames.pm +++ b/lib/charnames.pm @@ -1,1059 +1,25 @@ package charnames; use strict; use warnings; -use File::Spec; -our $VERSION = '1.27'; +our $VERSION = '1.28'; use unicore::Name; # mktables-generated algorithmically-defined names +use _charnames (); # The submodule for this where most of the work gets done use bytes (); # for $bytes::hint_bits use re "/aa"; # Everything in here should be ASCII # Translate between Unicode character names and their code points. -# -# The official names with their code points are stored in a table in -# lib/unicore/Name.pl which is read in as a large string (almost 3/4 Mb in -# Unicode 6.0). Each code point/name combination is separated by a \n in the -# string. (Some of the CJK and the Hangul syllable names are determined -# instead algorithmically via subroutines stored instead in -# lib/unicore/Name.pm). Because of the large size of this table, it isn't -# converted into hashes for faster lookup. -# -# But, user defined aliases are stored in their own hashes, as are Perl -# extensions to the official names. These are checked first before looking at -# the official table. -# -# Basically, the table is grepped for the input code point (viacode()) or -# name (the other functions), and the corresponding value on the same line is -# returned. The grepping is done by turning the input into a regular -# expression. Thus, the same table does double duty, used by both name and -# code point lookup. (If we were to have hashes, we would need two, one for -# each lookup direction.) -# -# For loose name matching, the logical thing would be to have a table -# with all the ignorable characters squeezed out, and then grep it with the -# similiarly-squeezed input name. (And this is in fact how the lookups are -# done with the small Perl extension hashes.) But since we need to be able to -# go from code point to official name, the original table would still need to -# exist. Due to the large size of the table, it was decided to not read -# another very large string into memory for a second table. Instead, the -# regular expression of the input name is modified to have optional spaces and -# dashes between characters. For example, in strict matching, the regular -# expression would be: -# qr/\tDIGIT ONE$/m -# Under loose matching, the blank would be squeezed out, and the re would be: -# qr/\tD[- ]?I[- ]?G[- ]?I[- ]?T[- ]?O[- ]?N[- ]?E$/m -# which matches a blank or dash between any characters in the official table. -# -# This is also how script lookup is done. Basically the re looks like -# qr/ (?:LATIN|GREEK|CYRILLIC) (?:SMALL )?LETTER $name/ -# where $name is the loose or strict regex for the remainder of the name. - -# The hashes are stored as utf8 strings. This makes it easier to deal with -# sequences. I (khw) also tried making Name.pl utf8, but it slowed things -# down by a factor of 7. I then tried making Name.pl store the ut8 -# equivalents but not calling them utf8. That led to similar speed as leaving -# it alone, but since that is harder for a human to parse, I left it as-is. - -my %system_aliases = ( - # Synonyms for the icky 3.2 names that have parentheses. - 'LINE FEED' => pack("U", 0x0A), # LINE FEED (LF) - 'FORM FEED' => pack("U", 0x0C), # FORM FEED (FF) - 'CARRIAGE RETURN' => pack("U", 0x0D), # CARRIAGE RETURN (CR) - 'NEXT LINE' => pack("U", 0x85), # NEXT LINE (NEL) - - # Some variant names from Wikipedia - 'SINGLE-SHIFT 2' => pack("U", 0x8E), - 'SINGLE-SHIFT 3' => pack("U", 0x8F), - 'PRIVATE USE 1' => pack("U", 0x91), - 'PRIVATE USE 2' => pack("U", 0x92), - 'START OF PROTECTED AREA' => pack("U", 0x96), - 'END OF PROTECTED AREA' => pack("U", 0x97), - - # Convenience. Standard abbreviations for the controls - 'NUL' => pack("U", 0x00), # NULL - 'SOH' => pack("U", 0x01), # START OF HEADING - 'STX' => pack("U", 0x02), # START OF TEXT - 'ETX' => pack("U", 0x03), # END OF TEXT - 'EOT' => pack("U", 0x04), # END OF TRANSMISSION - 'ENQ' => pack("U", 0x05), # ENQUIRY - 'ACK' => pack("U", 0x06), # ACKNOWLEDGE - 'BEL' => pack("U", 0x07), # ALERT; formerly BELL - 'BS' => pack("U", 0x08), # BACKSPACE - 'HT' => pack("U", 0x09), # HORIZONTAL TABULATION - 'LF' => pack("U", 0x0A), # LINE FEED (LF) - 'VT' => pack("U", 0x0B), # VERTICAL TABULATION - 'FF' => pack("U", 0x0C), # FORM FEED (FF) - 'CR' => pack("U", 0x0D), # CARRIAGE RETURN (CR) - 'SO' => pack("U", 0x0E), # SHIFT OUT - 'SI' => pack("U", 0x0F), # SHIFT IN - 'DLE' => pack("U", 0x10), # DATA LINK ESCAPE - 'DC1' => pack("U", 0x11), # DEVICE CONTROL ONE - 'DC2' => pack("U", 0x12), # DEVICE CONTROL TWO - 'DC3' => pack("U", 0x13), # DEVICE CONTROL THREE - 'DC4' => pack("U", 0x14), # DEVICE CONTROL FOUR - 'NAK' => pack("U", 0x15), # NEGATIVE ACKNOWLEDGE - 'SYN' => pack("U", 0x16), # SYNCHRONOUS IDLE - 'ETB' => pack("U", 0x17), # END OF TRANSMISSION BLOCK - 'CAN' => pack("U", 0x18), # CANCEL - 'EOM' => pack("U", 0x19), # END OF MEDIUM - 'SUB' => pack("U", 0x1A), # SUBSTITUTE - 'ESC' => pack("U", 0x1B), # ESCAPE - 'FS' => pack("U", 0x1C), # FILE SEPARATOR - 'GS' => pack("U", 0x1D), # GROUP SEPARATOR - 'RS' => pack("U", 0x1E), # RECORD SEPARATOR - 'US' => pack("U", 0x1F), # UNIT SEPARATOR - 'DEL' => pack("U", 0x7F), # DELETE - 'BPH' => pack("U", 0x82), # BREAK PERMITTED HERE - 'NBH' => pack("U", 0x83), # NO BREAK HERE - 'NEL' => pack("U", 0x85), # NEXT LINE (NEL) - 'SSA' => pack("U", 0x86), # START OF SELECTED AREA - 'ESA' => pack("U", 0x87), # END OF SELECTED AREA - 'HTS' => pack("U", 0x88), # CHARACTER TABULATION SET - 'HTJ' => pack("U", 0x89), # CHARACTER TABULATION WITH JUSTIFICATION - 'VTS' => pack("U", 0x8A), # LINE TABULATION SET - 'PLD' => pack("U", 0x8B), # PARTIAL LINE FORWARD - 'PLU' => pack("U", 0x8C), # PARTIAL LINE BACKWARD - 'RI' => pack("U", 0x8D), # REVERSE LINE FEED - 'SS2' => pack("U", 0x8E), # SINGLE SHIFT TWO - 'SS3' => pack("U", 0x8F), # SINGLE SHIFT THREE - 'DCS' => pack("U", 0x90), # DEVICE CONTROL STRING - 'PU1' => pack("U", 0x91), # PRIVATE USE ONE - 'PU2' => pack("U", 0x92), # PRIVATE USE TWO - 'STS' => pack("U", 0x93), # SET TRANSMIT STATE - 'CCH' => pack("U", 0x94), # CANCEL CHARACTER - 'MW' => pack("U", 0x95), # MESSAGE WAITING - 'SPA' => pack("U", 0x96), # START OF GUARDED AREA - 'EPA' => pack("U", 0x97), # END OF GUARDED AREA - 'SOS' => pack("U", 0x98), # START OF STRING - 'SCI' => pack("U", 0x9A), # SINGLE CHARACTER INTRODUCER - 'CSI' => pack("U", 0x9B), # CONTROL SEQUENCE INTRODUCER - 'ST' => pack("U", 0x9C), # STRING TERMINATOR - 'OSC' => pack("U", 0x9D), # OPERATING SYSTEM COMMAND - 'PM' => pack("U", 0x9E), # PRIVACY MESSAGE - 'APC' => pack("U", 0x9F), # APPLICATION PROGRAM COMMAND - - # There are no names for these in the Unicode standard; perhaps should be - # deprecated, but then again there are no alternative names, so am not - # deprecating. And if did, the code would have to change to not recommend - # an alternative for these. - 'PADDING CHARACTER' => pack("U", 0x80), - 'PAD' => pack("U", 0x80), - 'HIGH OCTET PRESET' => pack("U", 0x81), - 'HOP' => pack("U", 0x81), - 'INDEX' => pack("U", 0x84), - 'IND' => pack("U", 0x84), - 'SINGLE GRAPHIC CHARACTER INTRODUCER' => pack("U", 0x99), - 'SGC' => pack("U", 0x99), - - # More convenience. For further convenience, it is suggested some way of - # using the NamesList aliases be implemented, but there are ambiguities in - # NamesList.txt - 'BOM' => pack("U", 0xFEFF), # BYTE ORDER MARK - 'BYTE ORDER MARK'=> pack("U", 0xFEFF), - 'CGJ' => pack("U", 0x034F), # COMBINING GRAPHEME JOINER - 'FVS1' => pack("U", 0x180B), # MONGOLIAN FREE VARIATION SELECTOR ONE - 'FVS2' => pack("U", 0x180C), # MONGOLIAN FREE VARIATION SELECTOR TWO - 'FVS3' => pack("U", 0x180D), # MONGOLIAN FREE VARIATION SELECTOR THREE - 'LRE' => pack("U", 0x202A), # LEFT-TO-RIGHT EMBEDDING - 'LRM' => pack("U", 0x200E), # LEFT-TO-RIGHT MARK - 'LRO' => pack("U", 0x202D), # LEFT-TO-RIGHT OVERRIDE - 'MMSP' => pack("U", 0x205F), # MEDIUM MATHEMATICAL SPACE - 'MVS' => pack("U", 0x180E), # MONGOLIAN VOWEL SEPARATOR - 'NBSP' => pack("U", 0x00A0), # NO-BREAK SPACE - 'NNBSP' => pack("U", 0x202F), # NARROW NO-BREAK SPACE - 'PDF' => pack("U", 0x202C), # POP DIRECTIONAL FORMATTING - 'RLE' => pack("U", 0x202B), # RIGHT-TO-LEFT EMBEDDING - 'RLM' => pack("U", 0x200F), # RIGHT-TO-LEFT MARK - 'RLO' => pack("U", 0x202E), # RIGHT-TO-LEFT OVERRIDE - 'SHY' => pack("U", 0x00AD), # SOFT HYPHEN - 'VS1' => pack("U", 0xFE00), # VARIATION SELECTOR-1 - 'VS2' => pack("U", 0xFE01), # VARIATION SELECTOR-2 - 'VS3' => pack("U", 0xFE02), # VARIATION SELECTOR-3 - 'VS4' => pack("U", 0xFE03), # VARIATION SELECTOR-4 - 'VS5' => pack("U", 0xFE04), # VARIATION SELECTOR-5 - 'VS6' => pack("U", 0xFE05), # VARIATION SELECTOR-6 - 'VS7' => pack("U", 0xFE06), # VARIATION SELECTOR-7 - 'VS8' => pack("U", 0xFE07), # VARIATION SELECTOR-8 - 'VS9' => pack("U", 0xFE08), # VARIATION SELECTOR-9 - 'VS10' => pack("U", 0xFE09), # VARIATION SELECTOR-10 - 'VS11' => pack("U", 0xFE0A), # VARIATION SELECTOR-11 - 'VS12' => pack("U", 0xFE0B), # VARIATION SELECTOR-12 - 'VS13' => pack("U", 0xFE0C), # VARIATION SELECTOR-13 - 'VS14' => pack("U", 0xFE0D), # VARIATION SELECTOR-14 - 'VS15' => pack("U", 0xFE0E), # VARIATION SELECTOR-15 - 'VS16' => pack("U", 0xFE0F), # VARIATION SELECTOR-16 - 'VS17' => pack("U", 0xE0100), # VARIATION SELECTOR-17 - 'VS18' => pack("U", 0xE0101), # VARIATION SELECTOR-18 - 'VS19' => pack("U", 0xE0102), # VARIATION SELECTOR-19 - 'VS20' => pack("U", 0xE0103), # VARIATION SELECTOR-20 - 'VS21' => pack("U", 0xE0104), # VARIATION SELECTOR-21 - 'VS22' => pack("U", 0xE0105), # VARIATION SELECTOR-22 - 'VS23' => pack("U", 0xE0106), # VARIATION SELECTOR-23 - 'VS24' => pack("U", 0xE0107), # VARIATION SELECTOR-24 - 'VS25' => pack("U", 0xE0108), # VARIATION SELECTOR-25 - 'VS26' => pack("U", 0xE0109), # VARIATION SELECTOR-26 - 'VS27' => pack("U", 0xE010A), # VARIATION SELECTOR-27 - 'VS28' => pack("U", 0xE010B), # VARIATION SELECTOR-28 - 'VS29' => pack("U", 0xE010C), # VARIATION SELECTOR-29 - 'VS30' => pack("U", 0xE010D), # VARIATION SELECTOR-30 - 'VS31' => pack("U", 0xE010E), # VARIATION SELECTOR-31 - 'VS32' => pack("U", 0xE010F), # VARIATION SELECTOR-32 - 'VS33' => pack("U", 0xE0110), # VARIATION SELECTOR-33 - 'VS34' => pack("U", 0xE0111), # VARIATION SELECTOR-34 - 'VS35' => pack("U", 0xE0112), # VARIATION SELECTOR-35 - 'VS36' => pack("U", 0xE0113), # VARIATION SELECTOR-36 - 'VS37' => pack("U", 0xE0114), # VARIATION SELECTOR-37 - 'VS38' => pack("U", 0xE0115), # VARIATION SELECTOR-38 - 'VS39' => pack("U", 0xE0116), # VARIATION SELECTOR-39 - 'VS40' => pack("U", 0xE0117), # VARIATION SELECTOR-40 - 'VS41' => pack("U", 0xE0118), # VARIATION SELECTOR-41 - 'VS42' => pack("U", 0xE0119), # VARIATION SELECTOR-42 - 'VS43' => pack("U", 0xE011A), # VARIATION SELECTOR-43 - 'VS44' => pack("U", 0xE011B), # VARIATION SELECTOR-44 - 'VS45' => pack("U", 0xE011C), # VARIATION SELECTOR-45 - 'VS46' => pack("U", 0xE011D), # VARIATION SELECTOR-46 - 'VS47' => pack("U", 0xE011E), # VARIATION SELECTOR-47 - 'VS48' => pack("U", 0xE011F), # VARIATION SELECTOR-48 - 'VS49' => pack("U", 0xE0120), # VARIATION SELECTOR-49 - 'VS50' => pack("U", 0xE0121), # VARIATION SELECTOR-50 - 'VS51' => pack("U", 0xE0122), # VARIATION SELECTOR-51 - 'VS52' => pack("U", 0xE0123), # VARIATION SELECTOR-52 - 'VS53' => pack("U", 0xE0124), # VARIATION SELECTOR-53 - 'VS54' => pack("U", 0xE0125), # VARIATION SELECTOR-54 - 'VS55' => pack("U", 0xE0126), # VARIATION SELECTOR-55 - 'VS56' => pack("U", 0xE0127), # VARIATION SELECTOR-56 - 'VS57' => pack("U", 0xE0128), # VARIATION SELECTOR-57 - 'VS58' => pack("U", 0xE0129), # VARIATION SELECTOR-58 - 'VS59' => pack("U", 0xE012A), # VARIATION SELECTOR-59 - 'VS60' => pack("U", 0xE012B), # VARIATION SELECTOR-60 - 'VS61' => pack("U", 0xE012C), # VARIATION SELECTOR-61 - 'VS62' => pack("U", 0xE012D), # VARIATION SELECTOR-62 - 'VS63' => pack("U", 0xE012E), # VARIATION SELECTOR-63 - 'VS64' => pack("U", 0xE012F), # VARIATION SELECTOR-64 - 'VS65' => pack("U", 0xE0130), # VARIATION SELECTOR-65 - 'VS66' => pack("U", 0xE0131), # VARIATION SELECTOR-66 - 'VS67' => pack("U", 0xE0132), # VARIATION SELECTOR-67 - 'VS68' => pack("U", 0xE0133), # VARIATION SELECTOR-68 - 'VS69' => pack("U", 0xE0134), # VARIATION SELECTOR-69 - 'VS70' => pack("U", 0xE0135), # VARIATION SELECTOR-70 - 'VS71' => pack("U", 0xE0136), # VARIATION SELECTOR-71 - 'VS72' => pack("U", 0xE0137), # VARIATION SELECTOR-72 - 'VS73' => pack("U", 0xE0138), # VARIATION SELECTOR-73 - 'VS74' => pack("U", 0xE0139), # VARIATION SELECTOR-74 - 'VS75' => pack("U", 0xE013A), # VARIATION SELECTOR-75 - 'VS76' => pack("U", 0xE013B), # VARIATION SELECTOR-76 - 'VS77' => pack("U", 0xE013C), # VARIATION SELECTOR-77 - 'VS78' => pack("U", 0xE013D), # VARIATION SELECTOR-78 - 'VS79' => pack("U", 0xE013E), # VARIATION SELECTOR-79 - 'VS80' => pack("U", 0xE013F), # VARIATION SELECTOR-80 - 'VS81' => pack("U", 0xE0140), # VARIATION SELECTOR-81 - 'VS82' => pack("U", 0xE0141), # VARIATION SELECTOR-82 - 'VS83' => pack("U", 0xE0142), # VARIATION SELECTOR-83 - 'VS84' => pack("U", 0xE0143), # VARIATION SELECTOR-84 - 'VS85' => pack("U", 0xE0144), # VARIATION SELECTOR-85 - 'VS86' => pack("U", 0xE0145), # VARIATION SELECTOR-86 - 'VS87' => pack("U", 0xE0146), # VARIATION SELECTOR-87 - 'VS88' => pack("U", 0xE0147), # VARIATION SELECTOR-88 - 'VS89' => pack("U", 0xE0148), # VARIATION SELECTOR-89 - 'VS90' => pack("U", 0xE0149), # VARIATION SELECTOR-90 - 'VS91' => pack("U", 0xE014A), # VARIATION SELECTOR-91 - 'VS92' => pack("U", 0xE014B), # VARIATION SELECTOR-92 - 'VS93' => pack("U", 0xE014C), # VARIATION SELECTOR-93 - 'VS94' => pack("U", 0xE014D), # VARIATION SELECTOR-94 - 'VS95' => pack("U", 0xE014E), # VARIATION SELECTOR-95 - 'VS96' => pack("U", 0xE014F), # VARIATION SELECTOR-96 - 'VS97' => pack("U", 0xE0150), # VARIATION SELECTOR-97 - 'VS98' => pack("U", 0xE0151), # VARIATION SELECTOR-98 - 'VS99' => pack("U", 0xE0152), # VARIATION SELECTOR-99 - 'VS100' => pack("U", 0xE0153), # VARIATION SELECTOR-100 - 'VS101' => pack("U", 0xE0154), # VARIATION SELECTOR-101 - 'VS102' => pack("U", 0xE0155), # VARIATION SELECTOR-102 - 'VS103' => pack("U", 0xE0156), # VARIATION SELECTOR-103 - 'VS104' => pack("U", 0xE0157), # VARIATION SELECTOR-104 - 'VS105' => pack("U", 0xE0158), # VARIATION SELECTOR-105 - 'VS106' => pack("U", 0xE0159), # VARIATION SELECTOR-106 - 'VS107' => pack("U", 0xE015A), # VARIATION SELECTOR-107 - 'VS108' => pack("U", 0xE015B), # VARIATION SELECTOR-108 - 'VS109' => pack("U", 0xE015C), # VARIATION SELECTOR-109 - 'VS110' => pack("U", 0xE015D), # VARIATION SELECTOR-110 - 'VS111' => pack("U", 0xE015E), # VARIATION SELECTOR-111 - 'VS112' => pack("U", 0xE015F), # VARIATION SELECTOR-112 - 'VS113' => pack("U", 0xE0160), # VARIATION SELECTOR-113 - 'VS114' => pack("U", 0xE0161), # VARIATION SELECTOR-114 - 'VS115' => pack("U", 0xE0162), # VARIATION SELECTOR-115 - 'VS116' => pack("U", 0xE0163), # VARIATION SELECTOR-116 - 'VS117' => pack("U", 0xE0164), # VARIATION SELECTOR-117 - 'VS118' => pack("U", 0xE0165), # VARIATION SELECTOR-118 - 'VS119' => pack("U", 0xE0166), # VARIATION SELECTOR-119 - 'VS120' => pack("U", 0xE0167), # VARIATION SELECTOR-120 - 'VS121' => pack("U", 0xE0168), # VARIATION SELECTOR-121 - 'VS122' => pack("U", 0xE0169), # VARIATION SELECTOR-122 - 'VS123' => pack("U", 0xE016A), # VARIATION SELECTOR-123 - 'VS124' => pack("U", 0xE016B), # VARIATION SELECTOR-124 - 'VS125' => pack("U", 0xE016C), # VARIATION SELECTOR-125 - 'VS126' => pack("U", 0xE016D), # VARIATION SELECTOR-126 - 'VS127' => pack("U", 0xE016E), # VARIATION SELECTOR-127 - 'VS128' => pack("U", 0xE016F), # VARIATION SELECTOR-128 - 'VS129' => pack("U", 0xE0170), # VARIATION SELECTOR-129 - 'VS130' => pack("U", 0xE0171), # VARIATION SELECTOR-130 - 'VS131' => pack("U", 0xE0172), # VARIATION SELECTOR-131 - 'VS132' => pack("U", 0xE0173), # VARIATION SELECTOR-132 - 'VS133' => pack("U", 0xE0174), # VARIATION SELECTOR-133 - 'VS134' => pack("U", 0xE0175), # VARIATION SELECTOR-134 - 'VS135' => pack("U", 0xE0176), # VARIATION SELECTOR-135 - 'VS136' => pack("U", 0xE0177), # VARIATION SELECTOR-136 - 'VS137' => pack("U", 0xE0178), # VARIATION SELECTOR-137 - 'VS138' => pack("U", 0xE0179), # VARIATION SELECTOR-138 - 'VS139' => pack("U", 0xE017A), # VARIATION SELECTOR-139 - 'VS140' => pack("U", 0xE017B), # VARIATION SELECTOR-140 - 'VS141' => pack("U", 0xE017C), # VARIATION SELECTOR-141 - 'VS142' => pack("U", 0xE017D), # VARIATION SELECTOR-142 - 'VS143' => pack("U", 0xE017E), # VARIATION SELECTOR-143 - 'VS144' => pack("U", 0xE017F), # VARIATION SELECTOR-144 - 'VS145' => pack("U", 0xE0180), # VARIATION SELECTOR-145 - 'VS146' => pack("U", 0xE0181), # VARIATION SELECTOR-146 - 'VS147' => pack("U", 0xE0182), # VARIATION SELECTOR-147 - 'VS148' => pack("U", 0xE0183), # VARIATION SELECTOR-148 - 'VS149' => pack("U", 0xE0184), # VARIATION SELECTOR-149 - 'VS150' => pack("U", 0xE0185), # VARIATION SELECTOR-150 - 'VS151' => pack("U", 0xE0186), # VARIATION SELECTOR-151 - 'VS152' => pack("U", 0xE0187), # VARIATION SELECTOR-152 - 'VS153' => pack("U", 0xE0188), # VARIATION SELECTOR-153 - 'VS154' => pack("U", 0xE0189), # VARIATION SELECTOR-154 - 'VS155' => pack("U", 0xE018A), # VARIATION SELECTOR-155 - 'VS156' => pack("U", 0xE018B), # VARIATION SELECTOR-156 - 'VS157' => pack("U", 0xE018C), # VARIATION SELECTOR-157 - 'VS158' => pack("U", 0xE018D), # VARIATION SELECTOR-158 - 'VS159' => pack("U", 0xE018E), # VARIATION SELECTOR-159 - 'VS160' => pack("U", 0xE018F), # VARIATION SELECTOR-160 - 'VS161' => pack("U", 0xE0190), # VARIATION SELECTOR-161 - 'VS162' => pack("U", 0xE0191), # VARIATION SELECTOR-162 - 'VS163' => pack("U", 0xE0192), # VARIATION SELECTOR-163 - 'VS164' => pack("U", 0xE0193), # VARIATION SELECTOR-164 - 'VS165' => pack("U", 0xE0194), # VARIATION SELECTOR-165 - 'VS166' => pack("U", 0xE0195), # VARIATION SELECTOR-166 - 'VS167' => pack("U", 0xE0196), # VARIATION SELECTOR-167 - 'VS168' => pack("U", 0xE0197), # VARIATION SELECTOR-168 - 'VS169' => pack("U", 0xE0198), # VARIATION SELECTOR-169 - 'VS170' => pack("U", 0xE0199), # VARIATION SELECTOR-170 - 'VS171' => pack("U", 0xE019A), # VARIATION SELECTOR-171 - 'VS172' => pack("U", 0xE019B), # VARIATION SELECTOR-172 - 'VS173' => pack("U", 0xE019C), # VARIATION SELECTOR-173 - 'VS174' => pack("U", 0xE019D), # VARIATION SELECTOR-174 - 'VS175' => pack("U", 0xE019E), # VARIATION SELECTOR-175 - 'VS176' => pack("U", 0xE019F), # VARIATION SELECTOR-176 - 'VS177' => pack("U", 0xE01A0), # VARIATION SELECTOR-177 - 'VS178' => pack("U", 0xE01A1), # VARIATION SELECTOR-178 - 'VS179' => pack("U", 0xE01A2), # VARIATION SELECTOR-179 - 'VS180' => pack("U", 0xE01A3), # VARIATION SELECTOR-180 - 'VS181' => pack("U", 0xE01A4), # VARIATION SELECTOR-181 - 'VS182' => pack("U", 0xE01A5), # VARIATION SELECTOR-182 - 'VS183' => pack("U", 0xE01A6), # VARIATION SELECTOR-183 - 'VS184' => pack("U", 0xE01A7), # VARIATION SELECTOR-184 - 'VS185' => pack("U", 0xE01A8), # VARIATION SELECTOR-185 - 'VS186' => pack("U", 0xE01A9), # VARIATION SELECTOR-186 - 'VS187' => pack("U", 0xE01AA), # VARIATION SELECTOR-187 - 'VS188' => pack("U", 0xE01AB), # VARIATION SELECTOR-188 - 'VS189' => pack("U", 0xE01AC), # VARIATION SELECTOR-189 - 'VS190' => pack("U", 0xE01AD), # VARIATION SELECTOR-190 - 'VS191' => pack("U", 0xE01AE), # VARIATION SELECTOR-191 - 'VS192' => pack("U", 0xE01AF), # VARIATION SELECTOR-192 - 'VS193' => pack("U", 0xE01B0), # VARIATION SELECTOR-193 - 'VS194' => pack("U", 0xE01B1), # VARIATION SELECTOR-194 - 'VS195' => pack("U", 0xE01B2), # VARIATION SELECTOR-195 - 'VS196' => pack("U", 0xE01B3), # VARIATION SELECTOR-196 - 'VS197' => pack("U", 0xE01B4), # VARIATION SELECTOR-197 - 'VS198' => pack("U", 0xE01B5), # VARIATION SELECTOR-198 - 'VS199' => pack("U", 0xE01B6), # VARIATION SELECTOR-199 - 'VS200' => pack("U", 0xE01B7), # VARIATION SELECTOR-200 - 'VS201' => pack("U", 0xE01B8), # VARIATION SELECTOR-201 - 'VS202' => pack("U", 0xE01B9), # VARIATION SELECTOR-202 - 'VS203' => pack("U", 0xE01BA), # VARIATION SELECTOR-203 - 'VS204' => pack("U", 0xE01BB), # VARIATION SELECTOR-204 - 'VS205' => pack("U", 0xE01BC), # VARIATION SELECTOR-205 - 'VS206' => pack("U", 0xE01BD), # VARIATION SELECTOR-206 - 'VS207' => pack("U", 0xE01BE), # VARIATION SELECTOR-207 - 'VS208' => pack("U", 0xE01BF), # VARIATION SELECTOR-208 - 'VS209' => pack("U", 0xE01C0), # VARIATION SELECTOR-209 - 'VS210' => pack("U", 0xE01C1), # VARIATION SELECTOR-210 - 'VS211' => pack("U", 0xE01C2), # VARIATION SELECTOR-211 - 'VS212' => pack("U", 0xE01C3), # VARIATION SELECTOR-212 - 'VS213' => pack("U", 0xE01C4), # VARIATION SELECTOR-213 - 'VS214' => pack("U", 0xE01C5), # VARIATION SELECTOR-214 - 'VS215' => pack("U", 0xE01C6), # VARIATION SELECTOR-215 - 'VS216' => pack("U", 0xE01C7), # VARIATION SELECTOR-216 - 'VS217' => pack("U", 0xE01C8), # VARIATION SELECTOR-217 - 'VS218' => pack("U", 0xE01C9), # VARIATION SELECTOR-218 - 'VS219' => pack("U", 0xE01CA), # VARIATION SELECTOR-219 - 'VS220' => pack("U", 0xE01CB), # VARIATION SELECTOR-220 - 'VS221' => pack("U", 0xE01CC), # VARIATION SELECTOR-221 - 'VS222' => pack("U", 0xE01CD), # VARIATION SELECTOR-222 - 'VS223' => pack("U", 0xE01CE), # VARIATION SELECTOR-223 - 'VS224' => pack("U", 0xE01CF), # VARIATION SELECTOR-224 - 'VS225' => pack("U", 0xE01D0), # VARIATION SELECTOR-225 - 'VS226' => pack("U", 0xE01D1), # VARIATION SELECTOR-226 - 'VS227' => pack("U", 0xE01D2), # VARIATION SELECTOR-227 - 'VS228' => pack("U", 0xE01D3), # VARIATION SELECTOR-228 - 'VS229' => pack("U", 0xE01D4), # VARIATION SELECTOR-229 - 'VS230' => pack("U", 0xE01D5), # VARIATION SELECTOR-230 - 'VS231' => pack("U", 0xE01D6), # VARIATION SELECTOR-231 - 'VS232' => pack("U", 0xE01D7), # VARIATION SELECTOR-232 - 'VS233' => pack("U", 0xE01D8), # VARIATION SELECTOR-233 - 'VS234' => pack("U", 0xE01D9), # VARIATION SELECTOR-234 - 'VS235' => pack("U", 0xE01DA), # VARIATION SELECTOR-235 - 'VS236' => pack("U", 0xE01DB), # VARIATION SELECTOR-236 - 'VS237' => pack("U", 0xE01DC), # VARIATION SELECTOR-237 - 'VS238' => pack("U", 0xE01DD), # VARIATION SELECTOR-238 - 'VS239' => pack("U", 0xE01DE), # VARIATION SELECTOR-239 - 'VS240' => pack("U", 0xE01DF), # VARIATION SELECTOR-240 - 'VS241' => pack("U", 0xE01E0), # VARIATION SELECTOR-241 - 'VS242' => pack("U", 0xE01E1), # VARIATION SELECTOR-242 - 'VS243' => pack("U", 0xE01E2), # VARIATION SELECTOR-243 - 'VS244' => pack("U", 0xE01E3), # VARIATION SELECTOR-244 - 'VS245' => pack("U", 0xE01E4), # VARIATION SELECTOR-245 - 'VS246' => pack("U", 0xE01E5), # VARIATION SELECTOR-246 - 'VS247' => pack("U", 0xE01E6), # VARIATION SELECTOR-247 - 'VS248' => pack("U", 0xE01E7), # VARIATION SELECTOR-248 - 'VS249' => pack("U", 0xE01E8), # VARIATION SELECTOR-249 - 'VS250' => pack("U", 0xE01E9), # VARIATION SELECTOR-250 - 'VS251' => pack("U", 0xE01EA), # VARIATION SELECTOR-251 - 'VS252' => pack("U", 0xE01EB), # VARIATION SELECTOR-252 - 'VS253' => pack("U", 0xE01EC), # VARIATION SELECTOR-253 - 'VS254' => pack("U", 0xE01ED), # VARIATION SELECTOR-254 - 'VS255' => pack("U", 0xE01EE), # VARIATION SELECTOR-255 - 'VS256' => pack("U", 0xE01EF), # VARIATION SELECTOR-256 - 'WJ' => pack("U", 0x2060), # WORD JOINER - 'ZWJ' => pack("U", 0x200D), # ZERO WIDTH JOINER - 'ZWNJ' => pack("U", 0x200C), # ZERO WIDTH NON-JOINER - 'ZWSP' => pack("U", 0x200B), # ZERO WIDTH SPACE -); - -# These are the aliases above that differ under :loose and :full matching -# because the :full versions have blanks or hyphens in them. -my %loose_system_aliases = ( - 'LINEFEED' => pack("U", 0x0A), - 'FORMFEED' => pack("U", 0x0C), - 'CARRIAGERETURN' => pack("U", 0x0D), - 'NEXTLINE' => pack("U", 0x85), - 'SINGLESHIFT2' => pack("U", 0x8E), - 'SINGLESHIFT3' => pack("U", 0x8F), - 'PRIVATEUSE1' => pack("U", 0x91), - 'PRIVATEUSE2' => pack("U", 0x92), - 'STARTOFPROTECTEDAREA' => pack("U", 0x96), - 'ENDOFPROTECTEDAREA' => pack("U", 0x97), - 'PADDINGCHARACTER' => pack("U", 0x80), - 'HIGHOCTETPRESET' => pack("U", 0x81), - 'SINGLEGRAPHICCHARACTERINTRODUCER' => pack("U", 0x99), - 'BYTEORDERMARK' => pack("U", 0xFEFF), -); - -my %deprecated_aliases = ( - # Pre-3.2 compatibility (only for the first 256 characters). - # Use of these gives deprecated message. - 'HORIZONTAL TABULATION' => pack("U", 0x09), # CHARACTER TABULATION - 'VERTICAL TABULATION' => pack("U", 0x0B), # LINE TABULATION - 'FILE SEPARATOR' => pack("U", 0x1C), # INFORMATION SEPARATOR FOUR - 'GROUP SEPARATOR' => pack("U", 0x1D), # INFORMATION SEPARATOR THREE - 'RECORD SEPARATOR' => pack("U", 0x1E), # INFORMATION SEPARATOR TWO - 'UNIT SEPARATOR' => pack("U", 0x1F), # INFORMATION SEPARATOR ONE - 'HORIZONTAL TABULATION SET' => pack("U", 0x88), # CHARACTER TABULATION SET - 'HORIZONTAL TABULATION WITH JUSTIFICATION' => pack("U", 0x89), # CHARACTER TABULATION WITH JUSTIFICATION - 'PARTIAL LINE DOWN' => pack("U", 0x8B), # PARTIAL LINE FORWARD - 'PARTIAL LINE UP' => pack("U", 0x8C), # PARTIAL LINE BACKWARD - 'VERTICAL TABULATION SET' => pack("U", 0x8A), # LINE TABULATION SET - 'REVERSE INDEX' => pack("U", 0x8D), # REVERSE LINE FEED - - # Unicode 6.0 co-opted this for U+1F514, so deprecate it for now. - 'BELL' => pack("U", 0x07), -); - -my %loose_deprecated_aliases = ( - 'HORIZONTALTABULATION' => pack("U", 0x09), - 'VERTICALTABULATION' => pack("U", 0x0B), - 'FILESEPARATOR' => pack("U", 0x1C), - 'GROUPSEPARATOR' => pack("U", 0x1D), - 'RECORDSEPARATOR' => pack("U", 0x1E), - 'UNITSEPARATOR' => pack("U", 0x1F), - 'HORIZONTALTABULATIONSET' => pack("U", 0x88), - 'HORIZONTALTABULATIONWITHJUSTIFICATION' => pack("U", 0x89), - 'PARTIALLINEDOWN' => pack("U", 0x8B), - 'PARTIALLINEUP' => pack("U", 0x8C), - 'VERTICALTABULATIONSET' => pack("U", 0x8A), - 'REVERSEINDEX' => pack("U", 0x8D), -); - -# These are special cased in :loose matching, differing only in a medial -# hyphen -my $HANGUL_JUNGSEONG_O_E_utf8 = pack("U", 0x1180); -my $HANGUL_JUNGSEONG_OE_utf8 = pack("U", 0x116C); - - -my $txt; # The table of official character names - -my %full_names_cache; # Holds already-looked-up names, so don't have to -# re-look them up again. The previous versions of charnames had scoping -# bugs. For example if we use script A in one scope and find and cache -# what Z resolves to, we can't use that cache in a different scope that -# uses script B instead of A, as Z might be an entirely different letter -# there; or there might be different aliases in effect in different -# scopes, or :short may be in effect or not effect in different scopes, -# or various combinations thereof. This was solved in this version -# mostly by moving things to %^H. But some things couldn't be moved -# there. One of them was the cache of runtime looked-up names, in part -# because %^H is read-only at runtime. I (khw) don't know why the cache -# was run-time only in the previous versions: perhaps oversight; perhaps -# that compile time looking doesn't happen in a loop so didn't think it -# was worthwhile; perhaps not wanting to make the cache too large. But -# I decided to make it compile time as well; this could easily be -# changed. -# Anyway, this hash is not scoped, and is added to at runtime. It -# doesn't have scoping problems because the data in it is restricted to -# official names, which are always invariant, and we only set it and -# look at it at during :full lookups, so is unaffected by any other -# scoped options. I put this in to maintain parity with the older -# version. If desired, a %short_names cache could also be made, as well -# as one for each script, say in %script_names_cache, with each key -# being a hash for a script named in a 'use charnames' statement. I -# decided not to do that for now, just because it's added complication, -# and because I'm just trying to maintain parity, not extend it. - -# Like %full_names_cache, but for use when :loose is in effect. There needs -# to be two caches because :loose may not be in effect for a scope, and a -# loose name could inappropriately be returned when only exact matching is -# called for. -my %loose_names_cache; - -# Designed so that test decimal first, and then hex. Leading zeros -# imply non-decimal, as do non-[0-9] -my $decimal_qr = qr/^[1-9]\d*$/; - -# Returns the hex number in $1. -my $hex_qr = qr/^(?:[Uu]\+|0[xX])?([[:xdigit:]]+)$/; - -sub croak -{ - require Carp; goto &Carp::croak; -} # croak - -sub carp -{ - require Carp; goto &Carp::carp; -} # carp - -sub alias (@) # Set up a single alias -{ - my $alias = ref $_[0] ? $_[0] : { @_ }; - foreach my $name (keys %$alias) { - my $value = $alias->{$name}; - next unless defined $value; # Omit if screwed up. - - # Is slightly slower to just after this statement see if it is - # decimal, since we already know it is after having converted from - # hex, but makes the code easier to maintain, and is called - # infrequently, only at compile-time - if ($value !~ $decimal_qr && $value =~ $hex_qr) { - $value = CORE::hex $1; - } - if ($value =~ $decimal_qr) { - no warnings qw(non_unicode surrogate nonchar); # Allow any non-malformed - $^H{charnames_ord_aliases}{$name} = pack("U", $value); - - # Use a canonical form. - $^H{charnames_inverse_ords}{sprintf("%05X", $value)} = $name; - } - else { - # XXX validate syntax when deprecation cycle complete. ie. start - # with an alpha only, etc. - $^H{charnames_name_aliases}{$name} = $value; - } - } -} # alias - -sub not_legal_use_bytes_msg { - my ($name, $utf8) = @_; - my $return; - - if (length($utf8) == 1) { - $return = sprintf("Character 0x%04x with name '%s' is", ord $utf8, $name); - } else { - $return = sprintf("String with name '%s' (and ordinals %s) contains character(s)", $name, join(" ", map { sprintf "0x%04X", ord $_ } split(//, $utf8))); - } - return $return . " above 0xFF with 'use bytes' in effect"; -} - -sub alias_file ($) # Reads a file containing alias definitions -{ - my ($arg, $file) = @_; - if (-f $arg && File::Spec->file_name_is_absolute ($arg)) { - $file = $arg; - } - elsif ($arg =~ m/^\w+$/) { - $file = "unicore/${arg}_alias.pl"; - } - else { - croak "Charnames alias files can only have identifier characters"; - } - if (my @alias = do $file) { - @alias == 1 && !defined $alias[0] and - croak "$file cannot be used as alias file for charnames"; - @alias % 2 and - croak "$file did not return a (valid) list of alias pairs"; - alias (@alias); - return (1); - } - 0; -} # alias_file - -# For use when don't import anything. This structure must be kept in -# sync with the one that import() fills up. -my %dummy_H = ( - charnames_stringified_names => "", - charnames_stringified_ords => "", - charnames_scripts => "", - charnames_full => 1, - charnames_loose => 0, - charnames_short => 0, - ); - - -sub lookup_name ($$$) { - my ($name, $wants_ord, $runtime) = @_; - - # Lookup the name or sequence $name in the tables. If $wants_ord is false, - # returns the string equivalent of $name; if true, returns the ordinal value - # instead, but in this case $name must not be a sequence; otherwise undef is - # returned and a warning raised. $runtime is 0 if compiletime, otherwise - # gives the number of stack frames to go back to get the application caller - # info. - # If $name is not found, returns undef in runtime with no warning; and in - # compiletime, the Unicode replacement character, with a warning. - - # It looks first in the aliases, then in the large table of official Unicode - # names. - - my $utf8; # The string result - my $save_input; - - if ($runtime) { - - my $hints_ref = (caller($runtime))[10]; - - # If we didn't import anything (which happens with 'use charnames ()', - # substitute a dummy structure. - $hints_ref = \%dummy_H if ! defined $hints_ref - || (! defined $hints_ref->{charnames_full} - && ! defined $hints_ref->{charnames_loose}); - - # At runtime, but currently not at compile time, $^H gets - # stringified, so un-stringify back to the original data structures. - # These get thrown away by perl before the next invocation - # Also fill in the hash with the non-stringified data. - # N.B. New fields must be also added to %dummy_H - - %{$^H{charnames_name_aliases}} = split ',', - $hints_ref->{charnames_stringified_names}; - %{$^H{charnames_ord_aliases}} = split ',', - $hints_ref->{charnames_stringified_ords}; - $^H{charnames_scripts} = $hints_ref->{charnames_scripts}; - $^H{charnames_full} = $hints_ref->{charnames_full}; - $^H{charnames_loose} = $hints_ref->{charnames_loose}; - $^H{charnames_short} = $hints_ref->{charnames_short}; - } - - my $loose = $^H{charnames_loose}; - my $lookup_name; # Input name suitably modified for grepping for in the - # table - - # User alias should be checked first or else can't override ours, and if we - # were to add any, could conflict with theirs. - if (exists $^H{charnames_ord_aliases}{$name}) { - $utf8 = $^H{charnames_ord_aliases}{$name}; - } - elsif (exists $^H{charnames_name_aliases}{$name}) { - $name = $^H{charnames_name_aliases}{$name}; - $save_input = $lookup_name = $name; # Cache the result for any error - # message - # The aliases are documented to not match loosely, so change loose match - # into full. - if ($loose) { - $loose = 0; - $^H{charnames_full} = 1; - } - } - else { - - # Here, not a user alias. That means that loose matching may be in - # effect; will have to modify the input name. - $lookup_name = $name; - if ($loose) { - $lookup_name = uc $lookup_name; - - # Squeeze out all underscores - $lookup_name =~ s/_//g; - - # Remove all medial hyphens - $lookup_name =~ s/ (?<= \S ) - (?= \S )//gx; - - # Squeeze out all spaces - $lookup_name =~ s/\s//g; - } - - # Here, $lookup_name has been modified as necessary for looking in the - # hashes. Check the system alias files next. Most of these aliases are - # the same for both strict and loose matching. To save space, the ones - # which differ are in their own separate hash, which is checked if loose - # matching is selected and the regular match fails. To save time, the - # loose hashes could be expanded to include all aliases, and there would - # only have to be one check. But if someone specifies :loose, they are - # interested in convenience over speed, and the time for this second check - # is miniscule compared to the rest of the routine. - if (exists $system_aliases{$lookup_name}) { - $utf8 = $system_aliases{$lookup_name}; - } - elsif ($loose && exists $loose_system_aliases{$lookup_name}) { - $utf8 = $loose_system_aliases{$lookup_name}; - } - elsif (exists $deprecated_aliases{$lookup_name}) { - require warnings; - warnings::warnif('deprecated', - "Unicode character name \"$name\" is deprecated, use \"" - . viacode(ord $deprecated_aliases{$lookup_name}) - . "\" instead"); - $utf8 = $deprecated_aliases{$lookup_name}; - } - elsif ($loose && exists $loose_deprecated_aliases{$lookup_name}) { - require warnings; - warnings::warnif('deprecated', - "Unicode character name \"$name\" is deprecated, use \"" - . viacode(ord $loose_deprecated_aliases{$lookup_name}) - . "\" instead"); - $utf8 = $loose_deprecated_aliases{$lookup_name}; - } - } - - my @off; # Offsets into table of pattern match begin and end - - # If haven't found it yet... - if (! defined $utf8) { - - # See if has looked this input up earlier. - if (! $loose && $^H{charnames_full} && exists $full_names_cache{$name}) { - $utf8 = $full_names_cache{$name}; - } - elsif ($loose && exists $loose_names_cache{$name}) { - $utf8 = $loose_names_cache{$name}; - } - else { # Here, must do a look-up - - # If full or loose matching succeeded, points to where to cache the - # result - my $cache_ref; - - ## Suck in the code/name list as a big string. - ## Lines look like: - ## "00052\tLATIN CAPITAL LETTER R\n" - # or - # "0052 0303\tLATIN CAPITAL LETTER R WITH TILDE\n" - $txt = do "unicore/Name.pl" unless $txt; - - ## @off will hold the index into the code/name string of the start and - ## end of the name as we find it. - - ## If :loose, look for a loose match; if :full, look for the name - ## exactly - # First, see if the name is one which is algorithmically determinable. - # The subroutine is included in Name.pl. The table contained in - # $txt doesn't contain these. Experiments show that checking - # for these before checking for the regular names has no - # noticeable impact on performance for the regular names, but - # the other way around slows down finding these immensely. - # Algorithmically determinables are not placed in the cache because - # that uses up memory, and finding these again is fast. - if (($loose || $^H{charnames_full}) - && (defined (my $ord = name_to_code_point_special($lookup_name, $loose)))) - { - $utf8 = pack("U", $ord); - } - else { - - # Not algorithmically determinable; look up in the table. The name - # will be turned into a regex, so quote any meta characters. - $lookup_name = quotemeta $lookup_name; - - if ($loose) { - - # For loose matches, $lookup_name has already squeezed out the - # non-essential characters. We have to add in code to make the - # squeezed version match the non-squeezed equivalent in the table. - # The only remaining hyphens are ones that start or end a word in - # the original. They have been quoted in $lookup_name so they look - # like "\-". Change all other characters except the backslash - # quotes for any metacharacters, and the final character, so that - # e.g., COLON gets transformed into: /C[- ]?O[- ]?L[- ]?O[- ]?N/ - $lookup_name =~ s/ (?! \\ -) # Don't do this to the \- sequence - ( [^-\\] ) # Nor the "-" within that sequence, - # nor the "\" that quotes metachars, - # but otherwise put the char into $1 - (?=.) # And don't do it for the final char - /$1\[- \]?/gx; # And add an optional blank or - # '-' after each $1 char - - # Those remaining hyphens were originally at the beginning or end of - # a word, so they can match either a blank before or after, but not - # both. (Keep in mind that they have been quoted, so are a '\-' - # sequence) - $lookup_name =~ s/\\ -/(?:- | -)/xg; - } - - # Do the lookup in the full table if asked for, and if succeeds - # save the offsets and set where to cache the result. - if (($loose || $^H{charnames_full}) && $txt =~ /\t$lookup_name$/m) { - @off = ($-[0] + 1, $+[0]); # The 1 is for the tab - $cache_ref = ($loose) ? \%loose_names_cache : \%full_names_cache; - } - else { - - # Here, didn't look for, or didn't find the name. - # If :short is allowed, see if input is like "greek:Sigma". - # Keep in mind that $lookup_name has had the metas quoted. - my $scripts_trie = ""; - my $name_has_uppercase; - if (($^H{charnames_short}) - && $lookup_name =~ /^ (?: \\ \s)* # Quoted space - (.+?) # $1 = the script - (?: \\ \s)* - \\ : # Quoted colon - (?: \\ \s)* - (.+?) # $2 = the name - (?: \\ \s)* $ - /xs) - { - # Even in non-loose matching, the script traditionally has been - # case insensitve - $scripts_trie = "\U$1"; - $lookup_name = $2; - - # Use original name to find its input casing, but ignore the - # script part of that to make the determination. - $save_input = $name if ! defined $save_input; - $name =~ s/.*?://; - $name_has_uppercase = $name =~ /[[:upper:]]/; - } - else { # Otherwise look in allowed scripts - $scripts_trie = $^H{charnames_scripts}; - - # Use original name to find its input casing - $name_has_uppercase = $name =~ /[[:upper:]]/; - } - - my $case = $name_has_uppercase ? "CAPITAL" : "SMALL"; - if (! $scripts_trie - || $txt !~ - /\t (?: $scripts_trie ) \ (?:$case\ )? LETTER \ \U$lookup_name $/xm) - { - # Here we still don't have it, give up. - return if $runtime; - - # May have zapped input name, get it again. - $name = (defined $save_input) ? $save_input : $_[0]; - carp "Unknown charname '$name'"; - return ($wants_ord) ? 0xFFFD : pack("U", 0xFFFD); - } - - # Here have found the input name in the table. - @off = ($-[0] + 1, $+[0]); # The 1 is for the tab - } - - # Here, the input name has been found; we haven't set up the output, - # but we know where in the string - # the name starts. The string is set up so that for single characters - # (and not named sequences), the name is preceded immediately by a - # tab and 5 hex digits for its code, with a \n before those. Named - # sequences won't have the 7th preceding character be a \n. - # (Actually, for the very first entry in the table this isn't strictly - # true: subtracting 7 will yield -1, and the substr below will - # therefore yield the very last character in the table, which should - # also be a \n, so the statement works anyway.) - if (substr($txt, $off[0] - 7, 1) eq "\n") { - $utf8 = pack("U", CORE::hex substr($txt, $off[0] - 6, 5)); - - # Handle the single loose matching special case, in which two names - # differ only by a single medial hyphen. If the original had a - # hyphen (or more) in the right place, then it is that one. - $utf8 = $HANGUL_JUNGSEONG_O_E_utf8 - if $loose - && $utf8 eq $HANGUL_JUNGSEONG_OE_utf8 - && $name =~ m/O \s* - [-\s]* E/ix; - # Note that this wouldn't work if there were a 2nd - # OE in the name - } - else { - - # Here, is a named sequence. Need to go looking for the beginning, - # which is just after the \n from the previous entry in the table. - # The +1 skips past that newline, or, if the rindex() fails, to put - # us to an offset of zero. - my $charstart = rindex($txt, "\n", $off[0] - 7) + 1; - $utf8 = pack("U*", map { CORE::hex } - split " ", substr($txt, $charstart, $off[0] - $charstart - 1)); - } - } - - # Cache the input so as to not have to search the large table - # again, but only if it came from the one search that we cache. - # (Haven't bothered with the pain of sorting out scoping issues for the - # scripts searches.) - $cache_ref->{$name} = $utf8 if defined $cache_ref; - } - } +# This is a wrapper around the submodule C<_charnames>. This design allows +# C<_charnames> to be autoloaded to enable use of \N{...}, but requires this +# module to be explicitly requested for the functions API. $Carp::Internal{ (__PACKAGE__) } = 1; - # Here, have the utf8. If the return is to be an ord, must be any single - # character. - if ($wants_ord) { - return ord($utf8) if length $utf8 == 1; - } - else { - - # Here, wants string output. If utf8 is acceptable, just return what - # we've got; otherwise attempt to convert it to non-utf8 and return that. - my $in_bytes = ($runtime) - ? (caller $runtime)[8] & $bytes::hint_bits - : $^H & $bytes::hint_bits; - return $utf8 if (! $in_bytes || utf8::downgrade($utf8, 1)) # The 1 arg - # means don't die on failure - } - - # Here, there is an error: either there are too many characters, or the - # result string needs to be non-utf8, and at least one character requires - # utf8. Prefer any official name over the input one for the error message. - if (@off) { - $name = substr($txt, $off[0], $off[1] - $off[0]) if @off; - } - else { - $name = (defined $save_input) ? $save_input : $_[0]; - } - - if ($wants_ord) { - # Only way to get here in this case is if result too long. Message - # assumes that our only caller that requires single char result is - # vianame. - carp "charnames::vianame() doesn't handle named sequences ($name). Use charnames::string_vianame() instead"; - return; - } - - # Only other possible failure here is from use bytes. - if ($runtime) { - carp not_legal_use_bytes_msg($name, $utf8); - return; - } else { - croak not_legal_use_bytes_msg($name, $utf8); - } - -} # lookup_name - -sub charnames { - - # For \N{...}. Looks up the character name and returns the string - # representation of it. - - # The first 0 arg means wants a string returned; the second that we are in - # compile time - return lookup_name($_[0], 0, 0); -} - sub import { shift; ## ignore class name - - if (not @_) { - carp("'use charnames' needs explicit imports list"); - } - $^H{charnames} = \&charnames ; - $^H{charnames_ord_aliases} = {}; - $^H{charnames_name_aliases} = {}; - $^H{charnames_inverse_ords} = {}; - # New fields must be added to %dummy_H, and the code in lookup_name() - # that copies fields from the runtime structure - - ## - ## fill %h keys with our @_ args. - ## - my ($promote, %h, @args) = (0); - while (my $arg = shift) { - if ($arg eq ":alias") { - @_ or - croak ":alias needs an argument in charnames"; - my $alias = shift; - if (ref $alias) { - ref $alias eq "HASH" or - croak "Only HASH reference supported as argument to :alias"; - alias ($alias); - next; - } - if ($alias =~ m{:(\w+)$}) { - $1 eq "full" || $1 eq "loose" || $1 eq "short" and - croak ":alias cannot use existing pragma :$1 (reversed order?)"; - alias_file ($1) and $promote = 1; - next; - } - alias_file ($alias); - next; - } - if (substr($arg, 0, 1) eq ':' - and ! ($arg eq ":full" || $arg eq ":short" || $arg eq ":loose")) - { - warn "unsupported special '$arg' in charnames"; - next; - } - push @args, $arg; - } - @args == 0 && $promote and @args = (":full"); - @h{@args} = (1) x @args; - - # Don't leave these undefined as are tested for in lookup_names - $^H{charnames_full} = delete $h{':full'} || 0; - $^H{charnames_loose} = delete $h{':loose'} || 0; - $^H{charnames_short} = delete $h{':short'} || 0; - my @scripts = map { uc quotemeta } keys %h; - - ## - ## If utf8? warnings are enabled, and some scripts were given, - ## see if at least we can find one letter from each script. - ## - if (warnings::enabled('utf8') && @scripts) { - $txt = do "unicore/Name.pl" unless $txt; - - for my $script (@scripts) { - if (not $txt =~ m/\t$script (?:CAPITAL |SMALL )?LETTER /) { - warnings::warn('utf8', "No such script: '$script'"); - $script = quotemeta $script; # Escape it, for use in the re. - } - } - } - - # %^H gets stringified, so serialize it ourselves so can extract the - # real data back later. - $^H{charnames_stringified_ords} = join ",", %{$^H{charnames_ord_aliases}}; - $^H{charnames_stringified_names} = join ",", %{$^H{charnames_name_aliases}}; - $^H{charnames_stringified_inverse_ords} = join ",", %{$^H{charnames_inverse_ords}}; - - # Modify the input script names for loose name matching if that is also - # specified, similar to the way the base character name is prepared. They - # don't (currently, and hopefully never will) have dashes. These go into a - # regex, and have already been uppercased and quotemeta'd. Squeeze out all - # input underscores, blanks, and dashes. Then convert so will match a blank - # between any characters. - if ($^H{charnames_loose}) { - for (my $i = 0; $i < @scripts; $i++) { - $scripts[$i] =~ s/[_ -]//g; - $scripts[$i] =~ s/ ( [^\\] ) (?= . ) /$1\\ ?/gx; - } - } - - $^H{charnames_scripts} = join "|", @scripts; # Stringifiy them as a trie -} # import + _charnames->import(@_); +} # Cache of already looked-up values. This is set to only contain # official values, and user aliases can't override them, so scoping is @@ -1061,81 +27,13 @@ sub import my %viacode; sub viacode { - - # Returns the name of the code point argument - - if (@_ != 1) { - carp "charnames::viacode() expects one argument"; - return; - } - - my $arg = shift; - - # This is derived from Unicode::UCD, where it is nearly the same as the - # function _getcode(), but here it makes sure that even a hex argument - # has the proper number of leading zeros, which is critical in - # matching against $txt below - # Must check if decimal first; see comments at that definition - my $hex; - if ($arg =~ $decimal_qr) { - $hex = sprintf "%05X", $arg; - } elsif ($arg =~ $hex_qr) { - # Below is the line that differs from the _getcode() source - $hex = sprintf "%05X", hex $1; - } else { - carp("unexpected arg \"$arg\" to charnames::viacode()"); - return; - } - - return $viacode{$hex} if exists $viacode{$hex}; - - # If the code point is above the max in the table, there's no point - # looking through it. Checking the length first is slightly faster - if (length($hex) <= 5 || CORE::hex($hex) <= 0x10FFFF) { - $txt = do "unicore/Name.pl" unless $txt; - - # See if the name is algorithmically determinable. - my $algorithmic = code_point_to_name_special(CORE::hex $hex); - if (defined $algorithmic) { - $viacode{$hex} = $algorithmic; - return $algorithmic; - } - - # Return the official name, if exists. It's unclear to me (khw) at - # this juncture if it is better to return a user-defined override, so - # leaving it as is for now. - if ($txt =~ m/^$hex\t/m) { - - # The name starts with the next character and goes up to the - # next new-line. Using capturing parentheses above instead of - # @+ more than doubles the execution time in Perl 5.13 - $viacode{$hex} = substr($txt, $+[0], index($txt, "\n", $+[0]) - $+[0]); - return $viacode{$hex}; - } - } - - # See if there is a user name for it, before giving up completely. - # First get the scoped aliases, give up if have none. - my $H_ref = (caller(0))[10]; - return if ! defined $H_ref - || ! exists $H_ref->{charnames_stringified_inverse_ords}; - - my %code_point_aliases = split ',', - $H_ref->{charnames_stringified_inverse_ords}; - if (! exists $code_point_aliases{$hex}) { - if (CORE::hex($hex) > 0x10FFFF) { - carp "Unicode characters only allocated up to U+10FFFF (you asked for U+$hex)"; - } - return; - } - - return $code_point_aliases{$hex}; -} # viacode + return _charnames::viacode(@_); +} sub vianame { if (@_ != 1) { - carp "charnames::vianame() expects one name argument"; + _charnames::carp "charnames::vianame() expects one name argument"; return () } @@ -1152,13 +50,13 @@ sub vianame # string_vianame() instead. my $ord = CORE::hex $1; return chr $ord if $ord <= 255 || ! ((caller 0)[8] & $bytes::hint_bits); - carp not_legal_use_bytes_msg($arg, chr $ord); + _charnames::carp _charnames::not_legal_use_bytes_msg($arg, chr $ord); return; } # The first 1 arg means wants an ord returned; the second that we are in # runtime, and this is the first level routine called from the user - return lookup_name($arg, 1, 1); + return _charnames::lookup_name($arg, 1, 1); } # vianame sub string_vianame { @@ -1167,7 +65,7 @@ sub string_vianame { # found, undef otherwise. if (@_ != 1) { - carp "charnames::string_vianame() expects one name argument"; + _charnames::carp "charnames::string_vianame() expects one name argument"; return; } @@ -1178,17 +76,15 @@ sub string_vianame { my $ord = CORE::hex $1; return chr $ord if $ord <= 255 || ! ((caller 0)[8] & $bytes::hint_bits); - carp not_legal_use_bytes_msg($arg, chr $ord); + _charnames::carp _charnames::not_legal_use_bytes_msg($arg, chr $ord); return; } # The 0 arg means wants a string returned; the 1 arg means that we are in # runtime, and this is the first level routine called from the user - return lookup_name($arg, 0, 1); + return _charnames::lookup_name($arg, 0, 1); } # string_vianame - - 1; __END__ |