#!./miniperl -w
-$config_pm = $ARGV[0] || 'lib/Config.pm';
+my $config_pm = $ARGV[0] || 'lib/Config.pm';
+my $glossary = $ARGV[1] || 'Porting/Glossary';
@ARGV = "./config.sh";
# list names to put first (and hence lookup fastest)
next if m:^#!/bin/sh:;
# Catch CONFIG=true and PATCHLEVEL=n line from Configure.
s/^(\w+)=(true|\d+)\s*$/$1='$2'\n/;
- unless ($in_v or m/^(\w+)='(.*\n)/){
+ # We can delimit things in config.sh with either ' or ".
+ unless ($in_v or m/^(\w+)=(['"])(.*\n)/){
push(@non_v, "#$_"); # not a name='value' line
next;
}
+ $quote = $2;
if ($in_v) { $val .= $_; }
- else { ($name,$val) = ($1,$2); }
- $in_v = $val !~ /'\n/;
+ else { ($name,$val) = ($1,$3); }
+ $in_v = $val !~ /$quote\n/;
next if $in_v;
if ($extensions{$name}) { s,/,::,g }
- if (!$fast{$name}){ push(@v_others, "$name='$val"); next; }
- push(@v_fast,"$name='$val");
+ if (!$fast{$name}){ push(@v_others, "$name=$quote$val"); next; }
+ push(@v_fast,"$name=$quote$val");
}
foreach(@non_v){ print CONFIG $_ }
sub myconfig {
return $summary if $summary_expanded;
- $summary =~ s/\$(\w+)/$Config{$1}/ge;
+ $summary =~ s{\$(\w+)}
+ { my $c = $Config{$1}; defined($c) ? $c : 'undef' }ge;
$summary_expanded = 1;
$summary;
}
return $_[0]->{$_[1]} if (exists $_[0]->{$_[1]});
# Search for it in the big string
- my($value, $start, $marker);
- $marker = "$_[1]='";
+ my($value, $start, $marker, $quote_type);
+ $marker = "$_[1]=";
+ $quote_type = "'";
# return undef unless (($value) = $config_sh =~ m/^$_[1]='(.*)'\s*$/m);
- $start = index($config_sh, "\n$marker");
+ # Check for the common case, ' delimeted
+ $start = index($config_sh, "\n$marker$quote_type");
+ # If that failed, check for " delimited
+ if ($start == -1) {
+ $quote_type = '"';
+ $start = index($config_sh, "\n$marker$quote_type");
+ }
return undef if ( ($start == -1) && # in case it's first
(substr($config_sh, 0, length($marker)) ne $marker) );
- if ($start == -1) { $start = length($marker) }
- else { $start += length($marker) + 1 }
+ if ($start == -1) {
+ # It's the very first thing we found. Skip $start forward
+ # and figure out the quote mark after the =.
+ $start = length($marker) + 1;
+ $quote_type = substr($config_sh, $start - 1, 1);
+ }
+ else {
+ $start += length($marker) + 2;
+ }
$value = substr($config_sh, $start,
- index($config_sh, qq('\n), $start) - $start);
+ index($config_sh, "$quote_type\n", $start) - $start);
+ # If we had a double-quote, we'd better eval it so escape
+ # sequences and such can be interpolated. Since the incoming
+ # value is supposed to follow shell rules and not perl rules,
+ # we escape any perl variable markers
+ if ($quote_type eq '"') {
+ $value =~ s/\$/\\\$/g;
+ $value =~ s/\@/\\\@/g;
+ eval "\$value = \"$value\"";
+ }
+ #$value = sprintf($value) if $quote_type eq '"';
$value = undef if $value eq 'undef'; # So we can say "if $Config{'foo'}".
$_[0]->{$_[1]} = $value; # cache it
return $value;
}
sub NEXTKEY {
- my $pos = index($config_sh, qq('\n), $prevpos) + 2;
+ # Find out how the current key's quoted so we can skip to its end.
+ my $quote = substr($config_sh, index($config_sh, "=", $prevpos)+1, 1);
+ my $pos = index($config_sh, qq($quote\n), $prevpos) + 2;
my $len = index($config_sh, "=", $pos) - $pos;
$prevpos = $pos;
$len > 0 ? substr($config_sh, $pos, $len) : undef;
# exists($_[0]->{$_[1]}) or $config_sh =~ m/^$_[1]=/m;
exists($_[0]->{$_[1]}) or
index($config_sh, "\n$_[1]='") != -1 or
- substr($config_sh, 0, length($_[1])+2) eq "$_[1]='";
+ substr($config_sh, 0, length($_[1])+2) eq "$_[1]='" or
+ index($config_sh, "\n$_[1]=\"") != -1 or
+ substr($config_sh, 0, length($_[1])+2) eq "$_[1]=\"";
}
sub STORE { die "\%Config::Config is read-only\n" }
print CONFIG <<'ENDOFTAIL';
+# avoid Config..Exporter..UNIVERSAL search for DESTROY then AUTOLOAD
+sub DESTROY { }
+
tie %Config, 'Config';
1;
specific library directory ($Config{installarchlib}) and it checks the
perl version number when loaded.
+The values stored in config.sh may be either single-quoted or
+double-quoted. Double-quoted strings are handy for those cases where you
+need to include escape sequences in the strings. To avoid runtime variable
+interpolation, any C<$> and C<@> characters are replaced by C<\$> and
+C<\@>, respectively. This isn't foolproof, of course, so don't embed C<\$>
+or C<\@> in double-quoted strings unless you're willing to deal with the
+consequences. (The slashes will end up escaped and the C<$> or C<@> will
+trigger variable interpolation)
+
+=head1 GLOSSARY
+
+Most C<Config> variables are determined by the C<Configure> script
+on platforms supported by it (which is most UNIX platforms). Some
+platforms have custom-made C<Config> variables, and may thus not have
+some of the variables described below, or may have extraneous variables
+specific to that particular port. See the port specific documentation
+in such cases.
+
+ENDOFTAIL
+
+open(GLOS, "<$glossary") or die "Can't open $glossary: $!";
+%seen = ();
+$text = 0;
+$/ = '';
+
+sub process {
+ s/\A(\w*)\s+\(([\w.]+)\):\s*\n(\t?)/=item C<$1>\n\nFrom F<$2>:\n\n/m;
+ my $c = substr $1, 0, 1;
+ unless ($seen{$c}++) {
+ print CONFIG <<EOF if $text;
+=back
+
+EOF
+ print CONFIG <<EOF;
+=head2 $c
+
+=over
+
+EOF
+ $text = 1;
+ }
+ s/n't/n\00t/g; # leave can't, won't etc untouched
+ s/^\t\s+(.*)/\n\t$1\n/gm; # Indented lines ===> paragraphs
+ s/^(?<!\n\n)\t(.*)/$1/gm; # Not indented lines ===> text
+ s{([\'\"])(?=[^\'\"\s]*[./][^\'\"\s]*\1)([^\'\"\s]+)\1}(F<$2>)g; # '.o'
+ s{([\'\"])([^\'\"\s]+)\1}(C<$2>)g; # "date" command
+ s{\'([A-Za-z_\- *=/]+)\'}(C<$1>)g; # 'ln -s'
+ s{
+ (?<! [\w./<\'\"] ) # Only standalone file names
+ (?! e \. g \. ) # Not e.g.
+ (?! \. \. \. ) # Not ...
+ (?! \d ) # Not 5.004
+ ( [\w./]* [./] [\w./]* ) # Require . or / inside
+ (?<! \. (?= \s ) ) # Do not include trailing dot
+ (?! [\w/] ) # Include all of it
+ }
+ (F<$1>)xg; # /usr/local
+ s/((?<=\s)~\w*)/F<$1>/g; # ~name
+ s/(?<![.<\'\"])\b([A-Z_]{2,})\b(?![\'\"])/C<$1>/g; # UNISTD
+ s/(?<![.<\'\"])\b(?!the\b)(\w+)\s+macro\b/C<$1> macro/g; # FILE_cnt macro
+ s/n[\0]t/n't/g; # undo can't, won't damage
+}
+
+<GLOS>; # Skip the preamble
+while (<GLOS>) {
+ process;
+ print CONFIG;
+}
+
+print CONFIG <<'ENDOFTAIL';
+
+=back
+
=head1 NOTE
This module contains a good example of how to use tie to implement a
ENDOFTAIL
close(CONFIG);
+close(GLOS);
# Now do some simple tests on the Config.pm file we have created
unshift(@INC,'lib');
https://perl5.git.perl.org / perl5.git / blobdiff