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Diffstat (limited to 'mcon/pl/files.pl')
| -rw-r--r-- | mcon/pl/files.pl | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/mcon/pl/files.pl b/mcon/pl/files.pl new file mode 100644 index 0000000..9e6bd08 --- /dev/null +++ b/mcon/pl/files.pl @@ -0,0 +1,109 @@ +;# $Id$ +;# +;# Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +;# +;# You may redistribute only under the terms of the Artistic Licence, +;# as specified in the README file that comes with the distribution. +;# You may reuse parts of this distribution only within the terms of +;# that same Artistic Licence; a copy of which may be found at the root +;# of the source tree for dist 4.0. +;# +;# $Log: files.pl,v $ +;# Revision 3.0.1.2 1994/10/29 16:35:48 ram +;# patch36: added user-defined file extension support for lookups +;# +;# Revision 3.0.1.1 1993/10/16 13:54:55 ram +;# patch12: now skip confmagic.h when -M option is used +;# +;# Revision 3.0 1993/08/18 12:10:23 ram +;# Baseline for dist 3.0 netwide release. +;# +;# +;# These two arrays record the file names of the files which may (or may not) +;# contain shell or C symbols known by metaconfig. +;# @SHlist records the .SH files +;# @clist records the C-like files (i.e. .[chyl]) +;# +;# The extensions are actually computed dynamically from the definitions held +;# in the $cext and $shext variables from .package so that people can add new +;# extensions to their packages. For instance, perl5 adds .xs files holding +;# some C symbols. +;# +# Extract filenames from manifest +sub extract_filenames { + &build_filext; # Construct &is_cfile and &is_shfile + print "Extracting filenames (C and SH files) from $NEWMANI...\n" + unless $opt_s; + open(NEWMANI,$NEWMANI) || die "Can't open $NEWMANI.\n"; + local($file); + while (<NEWMANI>) { + ($file) = split(' '); + next if $file eq 'config_h.SH'; # skip config_h.SH + next if $file eq 'Configure'; # also skip Configure + next if $file eq 'confmagic.h' && $opt_M; + push(@SHlist, $file) if &is_shfile($file); + push(@clist, $file) if &is_cfile($file); + } +} + +# Construct two file identifiers based on the file suffix: one for C files, +# and one for SH files (using the $cext and $shext variables) defined in +# the .package file. +# The &is_cfile and &is_shfile routine may then be called to known whether +# a given file is a candidate for holding C or SH symbols. +sub build_filext { + &build_extfun('is_cfile', $cext, '.c .h .y .l'); + &build_extfun('is_shfile', $shext, '.SH'); +} + +# Build routine $name to identify extensions listed in $exts, ensuring +# that $minimum is at least matched (both to be backward compatible with +# older .package and because it is really the minimum requirred). +sub build_extfun { + local($name, $exts, $minimum) = @_; + local(@single); # Single letter dot extensions (may be grouped) + local(@others); # Other extensions + local(%seen); # Avoid duplicate extensions + foreach $ext (split(' ', "$exts $minimum")) { + next if $seen{$ext}++; + if ($ext =~ s/^\.(\w)$/$1/) { + push(@single, $ext); + } else { + # Convert into perl's regexp + $ext =~ s/\./\\./g; # Escape . + $ext =~ s/\?/./g; # ? turns into . + $ext =~ s/\*/.*/g; # * turns into .* + push(@others, $ext); + } + } + local($fn) = &q(<<EOF); # Function being built +:sub $name { +: local(\$_) = \@_; +EOF + local($single); # Single regexp: .c .h grouped into .[ch] + $single = '\.[' . join('', @single) . ']' if @single; + $fn .= &q(<<EOL) if @single; +: return 1 if /$single\$/; +EOL + foreach $ext (@others) { + $fn .= &q(<<EOL); +: return 1 if /$ext\$/; +EOL + } + $fn .= &q(<<EOF); +: 0; # None of the extensions may be applied to file name +:} +EOF + print $fn if $opt_d; + eval $fn; + chop($@) && die "Can't compile '$name':\n$fn\n$@.\n"; +} + +# Remove ':' quotations in front of the lines +sub q { + local($_) = @_; + local($*) = 1; + s/^://g; + $_; +} + |