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view perl-5.22.2/regen/unicode_constants.pl @ 8045:a16537d2fe07
<xfix> tar xf perl-5.22.2.tar.gz # Ah, whatever, I\'m doing it anyway
author | HackBot |
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date | Sat, 14 May 2016 14:54:38 +0000 |
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use v5.16.0; use strict; use warnings; require 'regen/regen_lib.pl'; require 'regen/charset_translations.pl'; use charnames qw(:loose); my $out_fh = open_new('unicode_constants.h', '>', {style => '*', by => $0, from => "Unicode data"}); print $out_fh <<END; #ifndef H_UNICODE_CONSTANTS /* Guard against nested #includes */ #define H_UNICODE_CONSTANTS 1 /* This file contains #defines for various Unicode code points. The values * the macros expand to are the native Unicode code point, or all or portions * of the UTF-8 encoding for the code point. In the former case, the macro * name has the suffix "_NATIVE"; otherwise, the suffix "_UTF8". * * The macros that have the suffix "_UTF8" may have further suffixes, as * follows: * "_FIRST_BYTE" if the value is just the first byte of the UTF-8 * representation; the value will be a numeric constant. * "_TAIL" if instead it represents all but the first byte. This, and * with no additional suffix are both string constants */ END # The data are at the end of this file. A blank line is output as-is. # Comments (lines whose first non-blank is a '#') are converted to C-style, # though empty comments are converted to blank lines. Otherwise, each line # represents one #define, and begins with either a Unicode character name with # the blanks and dashes in it squeezed out or replaced by underscores; or it # may be a hexadecimal Unicode code point of the form U+xxxx. In the latter # case, the name will be looked-up to use as the name of the macro. In either # case, the macro name will have suffixes as listed above, and all blanks and # dashes will be replaced by underscores. # # Each line may optionally have one of the following flags on it, separated by # white space from the initial token. # string indicates that the output is to be of the string form # described in the comments above that are placed in the file. # string_skip_ifundef is the same as 'string', but instead of dying if the # code point doesn't exist, the line is just skipped: no output is # generated for it # first indicates that the output is to be of the FIRST_BYTE form. # tail indicates that the output is of the _TAIL form. # native indicates that the output is the code point, converted to the # platform's native character set if applicable # # If the code point has no official name, the desired name may be appended # after the flag, which will be ignored if there is an official name. # # This program is used to make it convenient to create compile time constants # of UTF-8, and to generate proper EBCDIC as well as ASCII without manually # having to figure things out. my @data = <DATA>; foreach my $charset (get_supported_code_pages()) { print $out_fh "\n" . get_conditional_compile_line_start($charset); my @a2n = @{get_a2n($charset)}; for ( @data ) { chomp; # Convert any '#' comments to /* ... */; empty lines and comments are # output as blank lines if ($_ =~ m/ ^ \s* (?: \# ( .* ) )? $ /x) { my $comment_body = $1 // ""; if ($comment_body ne "") { print $out_fh "/* $comment_body */\n"; } else { print $out_fh "\n"; } next; } unless ($_ =~ m/ ^ ( [^\ ]* ) # Name or code point token (?: [\ ]+ ( [^ ]* ) )? # optional flag (?: [\ ]+ ( .* ) )? # name if unnamed; flag is required /x) { die "Unexpected syntax at line $.: $_\n"; } my $name_or_cp = $1; my $flag = $2; my $desired_name = $3; my $name; my $cp; my $U_cp; # code point in Unicode (not-native) terms my $undef_ok = $desired_name || $flag =~ /skip_if_undef/; if ($name_or_cp =~ /^U\+(.*)/) { $U_cp = hex $1; $name = charnames::viacode($name_or_cp); if (! defined $name) { die "Unknown code point '$name_or_cp' at line $.: $_\n" unless $undef_ok; $name = ""; } } else { $name = $name_or_cp; die "Unknown name '$name' at line $.: $_\n" unless defined $name; $U_cp = charnames::vianame($name =~ s/_/ /gr); } $cp = ($U_cp < 256) ? $a2n[$U_cp] : $U_cp; $name = $desired_name if $name eq "" && $desired_name; $name =~ s/[- ]/_/g; # The macro name can have no blanks nor dashes my $str; my $suffix; if (defined $flag && $flag eq 'native') { die "Are you sure you want to run this on an above-Latin1 code point?" if $cp > 0xff; $suffix = '_NATIVE'; $str = sprintf "0x%02X", $cp; # Is a numeric constant } else { $str = join "", map { sprintf "\\x%02X", ord $_ } split //, cp_2_utfbytes($U_cp, $charset); $suffix = '_UTF8'; if (! defined $flag || $flag =~ /^ string (_skip_if_undef)? $/x) { $str = "\"$str\""; # Will be a string constant } elsif ($flag eq 'tail') { $str =~ s/\\x..//; # Remove the first byte $suffix .= '_TAIL'; $str = "\"$str\""; # Will be a string constant } elsif ($flag eq 'first') { $str =~ s/ \\x ( .. ) .* /$1/x; # Get the two nibbles of the 1st byte $suffix .= '_FIRST_BYTE'; $str = "0x$str"; # Is a numeric constant } else { die "Unknown flag at line $.: $_\n"; } } printf $out_fh "# define %s%s %s /* U+%04X */\n", $name, $suffix, $str, $U_cp; } my $max_PRINT_A = 0; for my $i (0x20 .. 0x7E) { $max_PRINT_A = $a2n[$i] if $a2n[$i] > $max_PRINT_A; } printf $out_fh "# define MAX_PRINT_A_FOR_USE_ONLY_BY_REGCOMP_DOT_C 0x%02X /* The max code point that isPRINT_A */\n", $max_PRINT_A; print $out_fh "\n" . get_conditional_compile_line_end(); } use Unicode::UCD 'prop_invlist'; my $count = 0; my @other_invlist = prop_invlist("Other"); for (my $i = 0; $i < @other_invlist; $i += 2) { $count += ((defined $other_invlist[$i+1]) ? $other_invlist[$i+1] : 0x110000) - $other_invlist[$i]; } printf $out_fh "\n/* The number of code points not matching \\pC */\n" . "#define NON_OTHER_COUNT_FOR_USE_ONLY_BY_REGCOMP_DOT_C %d\n", 0x110000 - $count; print $out_fh "\n#endif /* H_UNICODE_CONSTANTS */\n"; read_only_bottom_close_and_rename($out_fh); __DATA__ U+017F string U+0300 string U+0399 string U+03BC string U+1E9E string U+FB05 string U+FB06 string U+2010 string U+D800 first FIRST_SURROGATE BOM first BOM tail NBSP native NBSP string DEL native CR native LF native VT native ESC native U+00DF native U+00E5 native U+00C5 native U+00FF native U+00B5 native