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Diffstat (limited to 'mcon/pl/obsolete.pl')
| -rw-r--r-- | mcon/pl/obsolete.pl | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/mcon/pl/obsolete.pl b/mcon/pl/obsolete.pl new file mode 100644 index 0000000..ba9a601 --- /dev/null +++ b/mcon/pl/obsolete.pl @@ -0,0 +1,103 @@ +;# $Id$ +;# +;# 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: obsolete.pl,v $ +;# Revision 3.0.1.1 1995/01/30 14:49:22 ram +;# patch49: random clean-up in &record_obsolete +;# +;# Revision 3.0 1993/08/18 12:10:27 ram +;# Baseline for dist 3.0 netwide release. +;# +;# +;# Deal with obsolete symbols. They are recorded in the %Obsolete array. +;# Optionally, the obsolete symbols may be remaped onto the new ones (option +;# -o), which enables smooth evolution from 2.0. +;# +# Record obsolete symbols association (new versus old), that is to say for a +# given old symbol, $Obsolete{'old'} = new symbol to be used. A '$' is prepended +# for all shell variables +sub record_obsolete { + local($_) = @_; + local(@obsoleted); # List of obsolete symbols + local($symbol); # New symbol which must be used + local($dollar) = s/^\$// ? '$':''; # The '$' or a null string + # Syntax for obsolete symbols specification is + # list of symbols (obsolete ones): + if (/^(\w+)\s*\((.*)\)\s*:$/) { + $symbol = "$dollar$1"; + @obsoleted = split(' ', $2); # List of obsolete symbols + } else { + if (/^(\w+)\s*\((.*):$/) { + warn "\"$file\", line $.: final ')' before ':' missing.\n"; + $symbol = "$dollar$1"; + @obsoleted = split(' ', $2); + } else { + warn "\"$file\", line $.: syntax error.\n"; + return; + } + } + foreach $val (@obsoleted) { + $_ = $dollar . $val; + if (defined $Obsolete{$_}) { + warn "\"$file\", line $.: '$_' already obsoleted by '$Obsolete{$_}'.\n"; + } else { + $Obsolete{$_} = $symbol; # Record (old, new) tuple + } + } +} + +# Dump obsolete symbols used in file 'Obsolete'. Also write Obsol_h.U and +# Obsol_sh.U to record old versus new mappings if the -o option was used. +sub dump_obsolete { + unless (-f 'Obsolete') { + open(OBSOLETE, ">Obsolete") || die "Can't create Obsolete.\n"; + } + open(OBSOL_H, ">.MT/Obsol_h.U") || die "Can't create .MT/Obsol_h.U.\n"; + open(OBSOL_SH, ">.MT/Obsol_sh.U") || die "Can't create .MT/Obsol_sh.U.\n"; + local($file); # File where obsolete symbol was found + local($old); # Name of this old symbol + local($new); # Value of the new symbol to be used + # Leave a blank line at the top so that anny added ^L will stand on a line + # by itself (the formatting process adds a ^L when a new page is needed). + format OBSOLETE_TOP = + + File | Old symbol | New symbol +-----------------------------------+----------------------+--------------------- +. + format OBSOLETE = +@<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< | @<<<<<<<<<<<<<<<<<<< | @<<<<<<<<<<<<<<<<<<< +$file, $old, $new +. + local(%seen); + foreach $key (sort keys %ofound) { + ($file, $old, $new) = ($key =~ /^(\S+)\s+(\S+)\s+(\S+)/); + write(OBSOLETE) unless $file eq 'XXX'; + next unless $opt_o; # Obsolete mapping done only with -o + next if $seen{$old}++; # Already remapped, thank you + if ($new =~ s/^\$//) { # We found an obsolete shell symbol + $old =~ s/^\$//; + print OBSOL_SH "$old=\"\$$new\"\n"; + } else { # We found an obsolete C symbol + print OBSOL_H "#ifdef $new\n"; + print OBSOL_H "#define $old $new\n"; + print OBSOL_H "#endif\n\n"; + } + } + close OBSOLETE; + close OBSOL_H; + close OBSOL_SH; + if (-s 'Obsolete') { + print "*** Obsolete symbols found -- see file 'Obsolete' for a list.\n"; + } else { + unlink 'Obsolete'; + } + undef %ofound; # Not needed any more +} + |