4 require 'regen/regen_lib.pl';
5 require 'regen/charset_translations.pl';
6 use charnames qw(:loose);
8 my $out_fh = open_new('unicode_constants.h', '>',
9 {style => '*', by => $0,
10 from => "Unicode data"});
14 #ifndef H_UNICODE_CONSTANTS /* Guard against nested #includes */
15 #define H_UNICODE_CONSTANTS 1
17 /* This file contains #defines for various Unicode code points. The values
18 * the macros expand to are the native Unicode code point, or all or portions
19 * of the UTF-8 encoding for the code point. In the former case, the macro
20 * name has the suffix "_NATIVE"; otherwise, the suffix "_UTF8".
22 * The macros that have the suffix "_UTF8" may have further suffixes, as
24 * "_FIRST_BYTE" if the value is just the first byte of the UTF-8
25 * representation; the value will be a numeric constant.
26 * "_TAIL" if instead it represents all but the first byte. This, and
27 * with no additional suffix are both string constants */
31 # The data are at __DATA__ in this file.
35 foreach my $charset (get_supported_code_pages()) {
36 print $out_fh "\n" . get_conditional_compile_line_start($charset);
38 my @a2n = @{get_a2n($charset)};
43 # Convert any '#' comments to /* ... */; empty lines and comments are
44 # output as blank lines
45 if ($_ =~ m/ ^ \s* (?: \# ( .* ) )? $ /x) {
46 my $comment_body = $1 // "";
47 if ($comment_body ne "") {
48 print $out_fh "/* $comment_body */\n";
56 unless ($_ =~ m/ ^ ( [^\ ]* ) # Name or code point token
57 (?: [\ ]+ ( [^ ]* ) )? # optional flag
58 (?: [\ ]+ ( .* ) )? # name if unnamed; flag is required
61 die "Unexpected syntax at line $.: $_\n";
66 my $desired_name = $3;
70 my $U_cp; # code point in Unicode (not-native) terms
72 if ($name_or_cp =~ /^U\+(.*)/) {
74 $name = charnames::viacode($name_or_cp);
75 if (! defined $name) {
76 next if $flag =~ /skip_if_undef/;
77 die "Unknown code point '$name_or_cp' at line $.: $_\n" unless $desired_name;
83 die "Unknown name '$name' at line $.: $_\n" unless defined $name;
84 $U_cp = charnames::vianame($name =~ s/_/ /gr);
91 $name = $desired_name if $name eq "" && $desired_name;
92 $name =~ s/[- ]/_/g; # The macro name can have no blanks nor dashes
96 if (defined $flag && $flag eq 'native') {
97 die "Are you sure you want to run this on an above-Latin1 code point?" if $cp > 0xff;
99 $str = sprintf "0x%02X", $cp; # Is a numeric constant
102 $str = join "", map { sprintf "\\x%02X", ord $_ } split //, cp_2_utfbytes($U_cp, $charset);
105 if (! defined $flag || $flag =~ /^ string (_skip_if_undef)? $/x) {
106 $str = "\"$str\""; # Will be a string constant
107 } elsif ($flag eq 'tail') {
108 $str =~ s/\\x..//; # Remove the first byte
110 $str = "\"$str\""; # Will be a string constant
112 elsif ($flag eq 'first') {
113 $str =~ s/ \\x ( .. ) .* /$1/x; # Get the two nibbles of the 1st byte
114 $suffix .= '_FIRST_BYTE';
115 $str = "0x$str"; # Is a numeric constant
118 die "Unknown flag at line $.: $_\n";
121 printf $out_fh "# define %s%s %s /* U+%04X */\n", $name, $suffix, $str, $U_cp;
125 for my $i (0x20 .. 0x7E) {
126 $max_PRINT_A = $a2n[$i] if $a2n[$i] > $max_PRINT_A;
128 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;
130 print $out_fh "\n" . get_conditional_compile_line_end();
134 use Unicode::UCD 'prop_invlist';
137 my @other_invlist = prop_invlist("Other");
138 for (my $i = 0; $i < @other_invlist; $i += 2) {
139 $count += ((defined $other_invlist[$i+1])
140 ? $other_invlist[$i+1]
142 - $other_invlist[$i];
144 printf $out_fh "\n/* The number of code points not matching \\pC */\n"
145 . "#define NON_OTHER_COUNT_FOR_USE_ONLY_BY_REGCOMP_DOT_C %d\n",
148 print $out_fh "\n#endif /* H_UNICODE_CONSTANTS */\n";
150 read_only_bottom_close_and_rename($out_fh);
154 # A blank line is output as-is.
155 # Comments (lines whose first non-blank is a '#') are converted to C-style,
156 # though empty comments are converted to blank lines. Otherwise, each line
157 # represents one #define, and begins with either a Unicode character name with
158 # the blanks and dashes in it squeezed out or replaced by underscores; or it
159 # may be a hexadecimal Unicode code point of the form U+xxxx. In the latter
160 # case, the name will be looked-up to use as the name of the macro. In either
161 # case, the macro name will have suffixes as listed above, and all blanks and
162 # dashes will be replaced by underscores.
164 # Each line may optionally have one of the following flags on it, separated by
165 # white space from the initial token.
166 # string indicates that the output is to be of the string form
167 # described in the comments above that are placed in the file.
168 # string_skip_ifundef is the same as 'string', but instead of dying if the
169 # code point doesn't exist, the line is just skipped: no output is
171 # first indicates that the output is to be of the FIRST_BYTE form.
172 # tail indicates that the output is of the _TAIL form.
173 # native indicates that the output is the code point, converted to the
174 # platform's native character set if applicable
176 # If the code point has no official name, the desired name may be appended
177 # after the flag, which will be ignored if there is an official name.
179 # This program is used to make it convenient to create compile time constants
180 # of UTF-8, and to generate proper EBCDIC as well as ASCII without manually
181 # having to figure things out.
191 U+1E9E string_skip_if_undef
197 U+D800 first FIRST_SURROGATE