114 lines
3.7 KiB
Perl
114 lines
3.7 KiB
Perl
#!/usr/bin/perl -w
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#
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# update_emoji.pl
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#
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# This script generates the emoji.plugin.zsh emoji definitions from the Unicode
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# character data for the emoji characters.
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#
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# The data file can be found at https://unicode.org/Public/emoji/latest/emoji-data.txt
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# as referenced in Unicode TR51 (https://www.unicode.org/reports/tr51/index.html).
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#
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# This is known to work with the data file from version 1.0. It may not work with later
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# versions if the format changes. In particular, this reads line comments to get the
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# emoji character name and unicode version.
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#
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# Country names have punctuation and other non-letter characters removed from their name,
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# to avoid possible complications with having to escape the strings when using them as
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# array subscripts. The definition file seems to use some combining characters like accents
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# that get stripped during this process.
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use strict;
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use warnings;
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use 5.010;
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use autodie;
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use Path::Class;
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use File::Copy;
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# Parse definitions out of the data file and convert
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sub process_emoji_data_file {
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my ( $infile, $outfilename ) = @_;
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my $file = file($infile);
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my $outfile = file($outfilename);
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my $outfilebase = $outfile->basename();
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my $tempfilename = "$outfilename.tmp";
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my $tempfile = file($tempfilename);
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my $outfh = $tempfile->openw();
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$outfh->print("
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# $outfilebase - Emoji character definitions for oh-my-zsh emoji plugin
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#
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# This file is auto-generated by update_emoji.pl. Do not edit it manually.
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#
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# This contains the definition for:
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# \$emoji - which maps character names to Unicode characters
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# \$emoji_flags - maps country names to Unicode flag characters using region indicators
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# Main emoji
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typeset -gAH emoji
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# National flags
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typeset -gAH emoji_flags
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# Combining modifiers
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typeset -gAH emoji_mod
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");
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my $fh = $file->openr();
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my $line_num = 0;
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while ( my $line = $fh->getline() ) {
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$line_num++;
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$_ = $line;
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# Skip all-comment lines (from the header) and blank lines
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# (But don't strip comments on normal lines; we need to parse those for
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# the emoji names.)
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next if /^\s*#/ or /^\s*$/;
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if (/^(\S.*?\S)\s*;\s*(\w+)\s*;\s*(\w+)\s*;\s*(\w+)\s*;\s*(\w.*?)\s*#\s*V(\S+)\s\(.*?\)\s*(\w.*\S)\s*$/) {
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my ($code, $style, $level, $modifier_status, $sources, $version, $keycap_name)
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= ($1, $2, $3, $4, $5, $6, $7);
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#print "code=$code style=$style level=$level modifier_status=$modifier_status sources=$sources version=$version name=$keycap_name\n";
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my @code_points = split /\s+/, $code;
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my @sources = split /\s+/, $sources;
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my $flag_country = "";
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if ( $keycap_name =~ /^flag for (\S.*?)\s*$/) {
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$flag_country = $1;
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}
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my $zsh_code = join '', map { "\\U$_" } @code_points;
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# Convert keycap names to valid associative array names that do not require any
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# quoting. Works fine for most stuff, but is clumsy for flags.
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my $omz_name = lc($keycap_name);
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$omz_name =~ s/[^A-Za-z0-9]/_/g;
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my $zsh_flag_country = $flag_country;
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$zsh_flag_country =~ s/[^\p{Letter}]/_/g;
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if ($flag_country) {
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$outfh->print("emoji_flags[$zsh_flag_country]=\$'$zsh_code'\n");
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} else {
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$outfh->print("emoji[$omz_name]=\$'$zsh_code'\n");
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}
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# Modifiers are included in both the main set and their separate map,
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# because they have a standalone representation as a color swatch.
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if ( $modifier_status eq "modifier" ) {
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$outfh->print("emoji_mod[$omz_name]=\$'$zsh_code'\n");
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}
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} else {
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die "Failed parsing line $line_num: '$_'";
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}
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}
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$fh->close();
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$outfh->print("\n");
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$outfh->close();
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move($tempfilename, $outfilename)
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or die "Failed moving temp file to $outfilename: $!";
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}
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my $datafile = "emoji-data.txt";
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my $zsh_def_file = "emoji-char-definitions.zsh";
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process_emoji_data_file($datafile, $zsh_def_file);
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print "Updated definition file $zsh_def_file\n";
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