-
-# Time-stamp: "2004-03-30 16:33:31 AST"
-
-require 5;
package Locale::Maketext;
use strict;
use vars qw( @ISA $VERSION $MATCH_SUPERS $USING_LANGUAGE_TAGS
- $USE_LITERALS $MATCH_SUPERS_TIGHTLY);
+$USE_LITERALS $MATCH_SUPERS_TIGHTLY);
use Carp ();
use I18N::LangTags 0.30 ();
#--------------------------------------------------------------------------
BEGIN { unless(defined &DEBUG) { *DEBUG = sub () {0} } }
- # define the constant 'DEBUG' at compile-time
+# define the constant 'DEBUG' at compile-time
-$VERSION = "1.09_01";
+$VERSION = '1.13';
@ISA = ();
$MATCH_SUPERS = 1;
$MATCH_SUPERS_TIGHTLY = 1;
$USING_LANGUAGE_TAGS = 1;
- # Turning this off is somewhat of a security risk in that little or no
- # checking will be done on the legality of tokens passed to the
- # eval("use $module_name") in _try_use. If you turn this off, you have
- # to do your own taint checking.
+# Turning this off is somewhat of a security risk in that little or no
+# checking will be done on the legality of tokens passed to the
+# eval("use $module_name") in _try_use. If you turn this off, you have
+# to do your own taint checking.
$USE_LITERALS = 1 unless defined $USE_LITERALS;
- # a hint for compiling bracket-notation things.
+# a hint for compiling bracket-notation things.
my %isa_scan = ();
###########################################################################
sub quant {
- my($handle, $num, @forms) = @_;
+ my($handle, $num, @forms) = @_;
- return $num if @forms == 0; # what should this mean?
- return $forms[2] if @forms > 2 and $num == 0; # special zeroth case
+ return $num if @forms == 0; # what should this mean?
+ return $forms[2] if @forms > 2 and $num == 0; # special zeroth case
- # Normal case:
- # Note that the formatting of $num is preserved.
- return( $handle->numf($num) . ' ' . $handle->numerate($num, @forms) );
- # Most human languages put the number phrase before the qualified phrase.
+ # Normal case:
+ # Note that the formatting of $num is preserved.
+ return( $handle->numf($num) . ' ' . $handle->numerate($num, @forms) );
+ # Most human languages put the number phrase before the qualified phrase.
}
sub numerate {
- # return this lexical item in a form appropriate to this number
- my($handle, $num, @forms) = @_;
- my $s = ($num == 1);
-
- return '' unless @forms;
- if(@forms == 1) { # only the headword form specified
- return $s ? $forms[0] : ($forms[0] . 's'); # very cheap hack.
- } else { # sing and plural were specified
- return $s ? $forms[0] : $forms[1];
- }
+ # return this lexical item in a form appropriate to this number
+ my($handle, $num, @forms) = @_;
+ my $s = ($num == 1);
+
+ return '' unless @forms;
+ if(@forms == 1) { # only the headword form specified
+ return $s ? $forms[0] : ($forms[0] . 's'); # very cheap hack.
+ }
+ else { # sing and plural were specified
+ return $s ? $forms[0] : $forms[1];
+ }
}
#--------------------------------------------------------------------------
sub numf {
- my($handle, $num) = @_[0,1];
- if($num < 10_000_000_000 and $num > -10_000_000_000 and $num == int($num)) {
- $num += 0; # Just use normal integer stringification.
- # Specifically, don't let %G turn ten million into 1E+007
- } else {
- $num = CORE::sprintf("%G", $num);
- # "CORE::" is there to avoid confusion with the above sub sprintf.
- }
- while( $num =~ s/^([-+]?\d+)(\d{3})/$1,$2/s ) {1} # right from perlfaq5
- # The initial \d+ gobbles as many digits as it can, and then we
- # backtrack so it un-eats the rightmost three, and then we
- # insert the comma there.
-
- $num =~ tr<.,><,.> if ref($handle) and $handle->{'numf_comma'};
- # This is just a lame hack instead of using Number::Format
- return $num;
+ my($handle, $num) = @_[0,1];
+ if($num < 10_000_000_000 and $num > -10_000_000_000 and $num == int($num)) {
+ $num += 0; # Just use normal integer stringification.
+ # Specifically, don't let %G turn ten million into 1E+007
+ }
+ else {
+ $num = CORE::sprintf('%G', $num);
+ # "CORE::" is there to avoid confusion with the above sub sprintf.
+ }
+ while( $num =~ s/^([-+]?\d+)(\d{3})/$1,$2/s ) {1} # right from perlfaq5
+ # The initial \d+ gobbles as many digits as it can, and then we
+ # backtrack so it un-eats the rightmost three, and then we
+ # insert the comma there.
+
+ $num =~ tr<.,><,.> if ref($handle) and $handle->{'numf_comma'};
+ # This is just a lame hack instead of using Number::Format
+ return $num;
}
sub sprintf {
- no integer;
- my($handle, $format, @params) = @_;
- return CORE::sprintf($format, @params);
+ no integer;
+ my($handle, $format, @params) = @_;
+ return CORE::sprintf($format, @params);
# "CORE::" is there to avoid confusion with myself!
}
use integer; # vroom vroom... applies to the whole rest of the module
sub language_tag {
- my $it = ref($_[0]) || $_[0];
- return undef unless $it =~ m/([^':]+)(?:::)?$/s;
- $it = lc($1);
- $it =~ tr<_><->;
- return $it;
+ my $it = ref($_[0]) || $_[0];
+ return undef unless $it =~ m/([^':]+)(?:::)?$/s;
+ $it = lc($1);
+ $it =~ tr<_><->;
+ return $it;
}
sub encoding {
- my $it = $_[0];
- return(
- (ref($it) && $it->{'encoding'})
- || "iso-8859-1" # Latin-1
- );
-}
+ my $it = $_[0];
+ return(
+ (ref($it) && $it->{'encoding'})
+ || 'iso-8859-1' # Latin-1
+ );
+}
#--------------------------------------------------------------------------
#--------------------------------------------------------------------------
sub fail_with { # an actual attribute method!
- my($handle, @params) = @_;
- return unless ref($handle);
- $handle->{'fail'} = $params[0] if @params;
- return $handle->{'fail'};
+ my($handle, @params) = @_;
+ return unless ref($handle);
+ $handle->{'fail'} = $params[0] if @params;
+ return $handle->{'fail'};
}
#--------------------------------------------------------------------------
sub failure_handler_auto {
- # Meant to be used like:
- # $handle->fail_with('failure_handler_auto')
-
- my($handle, $phrase, @params) = @_;
- $handle->{'failure_lex'} ||= {};
- my $lex = $handle->{'failure_lex'};
-
- my $value;
- $lex->{$phrase} ||= ($value = $handle->_compile($phrase));
-
- # Dumbly copied from sub maketext:
- {
- local $SIG{'__DIE__'};
- eval { $value = &$value($handle, @_) };
- }
- # If we make it here, there was an exception thrown in the
- # call to $value, and so scream:
- if($@) {
- my $err = $@;
- # pretty up the error message
- $err =~ s<\s+at\s+\(eval\s+\d+\)\s+line\s+(\d+)\.?\n?>
- <\n in bracket code [compiled line $1],>s;
- #$err =~ s/\n?$/\n/s;
- Carp::croak "Error in maketexting \"$phrase\":\n$err as used";
- # Rather unexpected, but suppose that the sub tried calling
- # a method that didn't exist.
- } else {
- return $value;
- }
+ # Meant to be used like:
+ # $handle->fail_with('failure_handler_auto')
+
+ my $handle = shift;
+ my $phrase = shift;
+
+ $handle->{'failure_lex'} ||= {};
+ my $lex = $handle->{'failure_lex'};
+
+ my $value;
+ $lex->{$phrase} ||= ($value = $handle->_compile($phrase));
+
+ # Dumbly copied from sub maketext:
+ return ${$value} if ref($value) eq 'SCALAR';
+ return $value if ref($value) ne 'CODE';
+ {
+ local $SIG{'__DIE__'};
+ eval { $value = &$value($handle, @_) };
+ }
+ # If we make it here, there was an exception thrown in the
+ # call to $value, and so scream:
+ if($@) {
+ my $err = $@;
+ # pretty up the error message
+ $err =~ s{\s+at\s+\(eval\s+\d+\)\s+line\s+(\d+)\.?\n?}
+ {\n in bracket code [compiled line $1],}s;
+ #$err =~ s/\n?$/\n/s;
+ Carp::croak "Error in maketexting \"$phrase\":\n$err as used";
+ # Rather unexpected, but suppose that the sub tried calling
+ # a method that didn't exist.
+ }
+ else {
+ return $value;
+ }
}
#==========================================================================
sub new {
- # Nothing fancy!
- my $class = ref($_[0]) || $_[0];
- my $handle = bless {}, $class;
- $handle->init;
- return $handle;
+ # Nothing fancy!
+ my $class = ref($_[0]) || $_[0];
+ my $handle = bless {}, $class;
+ $handle->init;
+ return $handle;
}
sub init { return } # no-op
###########################################################################
sub maketext {
- # Remember, this can fail. Failure is controllable many ways.
- Carp::croak "maketext requires at least one parameter" unless @_ > 1;
-
- my($handle, $phrase) = splice(@_,0,2);
-
- # Don't interefere with $@ in case that's being interpolated into the msg.
- local $@;
-
- # Look up the value:
-
- my $value;
- foreach my $h_r (
- @{ $isa_scan{ref($handle) || $handle} || $handle->_lex_refs }
- ) {
- print "* Looking up \"$phrase\" in $h_r\n" if DEBUG;
- if(exists $h_r->{$phrase}) {
- print " Found \"$phrase\" in $h_r\n" if DEBUG;
- unless(ref($value = $h_r->{$phrase})) {
- # Nonref means it's not yet compiled. Compile and replace.
- $value = $h_r->{$phrase} = $handle->_compile($value);
- }
- last;
- } elsif($phrase !~ m/^_/s and $h_r->{'_AUTO'}) {
- # it's an auto lex, and this is an autoable key!
- print " Automaking \"$phrase\" into $h_r\n" if DEBUG;
-
- $value = $h_r->{$phrase} = $handle->_compile($phrase);
- last;
+ # Remember, this can fail. Failure is controllable many ways.
+ Carp::croak 'maketext requires at least one parameter' unless @_ > 1;
+
+ my($handle, $phrase) = splice(@_,0,2);
+ Carp::confess('No handle/phrase') unless (defined($handle) && defined($phrase));
+
+
+ # Don't interefere with $@ in case that's being interpolated into the msg.
+ local $@;
+
+ # Look up the value:
+
+ my $value;
+ foreach my $h_r (
+ @{ $isa_scan{ref($handle) || $handle} || $handle->_lex_refs }
+ ) {
+ DEBUG and warn "* Looking up \"$phrase\" in $h_r\n";
+ if(exists $h_r->{$phrase}) {
+ DEBUG and warn " Found \"$phrase\" in $h_r\n";
+ unless(ref($value = $h_r->{$phrase})) {
+ # Nonref means it's not yet compiled. Compile and replace.
+ $value = $h_r->{$phrase} = $handle->_compile($value);
+ }
+ last;
+ }
+ elsif($phrase !~ m/^_/s and $h_r->{'_AUTO'}) {
+ # it's an auto lex, and this is an autoable key!
+ DEBUG and warn " Automaking \"$phrase\" into $h_r\n";
+
+ $value = $h_r->{$phrase} = $handle->_compile($phrase);
+ last;
+ }
+ DEBUG>1 and print " Not found in $h_r, nor automakable\n";
+ # else keep looking
}
- print " Not found in $h_r, nor automakable\n" if DEBUG > 1;
- # else keep looking
- }
-
- unless(defined($value)) {
- print "! Lookup of \"$phrase\" in/under ", ref($handle) || $handle,
- " fails.\n" if DEBUG;
- if(ref($handle) and $handle->{'fail'}) {
- print "WARNING0: maketext fails looking for <$phrase>\n" if DEBUG;
- my $fail;
- if(ref($fail = $handle->{'fail'}) eq 'CODE') { # it's a sub reference
- return &{$fail}($handle, $phrase, @_);
- # If it ever returns, it should return a good value.
- } else { # It's a method name
- return $handle->$fail($phrase, @_);
- # If it ever returns, it should return a good value.
- }
- } else {
- # All we know how to do is this;
- Carp::croak("maketext doesn't know how to say:\n$phrase\nas needed");
+
+ unless(defined($value)) {
+ DEBUG and warn "! Lookup of \"$phrase\" in/under ", ref($handle) || $handle, " fails.\n";
+ if(ref($handle) and $handle->{'fail'}) {
+ DEBUG and warn "WARNING0: maketext fails looking for <$phrase>\n";
+ my $fail;
+ if(ref($fail = $handle->{'fail'}) eq 'CODE') { # it's a sub reference
+ return &{$fail}($handle, $phrase, @_);
+ # If it ever returns, it should return a good value.
+ }
+ else { # It's a method name
+ return $handle->$fail($phrase, @_);
+ # If it ever returns, it should return a good value.
+ }
+ }
+ else {
+ # All we know how to do is this;
+ Carp::croak("maketext doesn't know how to say:\n$phrase\nas needed");
+ }
+ }
+
+ return $$value if ref($value) eq 'SCALAR';
+ return $value unless ref($value) eq 'CODE';
+
+ {
+ local $SIG{'__DIE__'};
+ eval { $value = &$value($handle, @_) };
+ }
+ # If we make it here, there was an exception thrown in the
+ # call to $value, and so scream:
+ if ($@) {
+ my $err = $@;
+ # pretty up the error message
+ $err =~ s{\s+at\s+\(eval\s+\d+\)\s+line\s+(\d+)\.?\n?}
+ {\n in bracket code [compiled line $1],}s;
+ #$err =~ s/\n?$/\n/s;
+ Carp::croak "Error in maketexting \"$phrase\":\n$err as used";
+ # Rather unexpected, but suppose that the sub tried calling
+ # a method that didn't exist.
+ }
+ else {
+ return $value;
}
- }
-
- return $$value if ref($value) eq 'SCALAR';
- return $value unless ref($value) eq 'CODE';
-
- {
- local $SIG{'__DIE__'};
- eval { $value = &$value($handle, @_) };
- }
- # If we make it here, there was an exception thrown in the
- # call to $value, and so scream:
- if($@) {
- my $err = $@;
- # pretty up the error message
- $err =~ s<\s+at\s+\(eval\s+\d+\)\s+line\s+(\d+)\.?\n?>
- <\n in bracket code [compiled line $1],>s;
- #$err =~ s/\n?$/\n/s;
- Carp::croak "Error in maketexting \"$phrase\":\n$err as used";
- # Rather unexpected, but suppose that the sub tried calling
- # a method that didn't exist.
- } else {
- return $value;
- }
}
###########################################################################
sub get_handle { # This is a constructor and, yes, it CAN FAIL.
- # Its class argument has to be the base class for the current
- # application's l10n files.
-
- my($base_class, @languages) = @_;
- $base_class = ref($base_class) || $base_class;
- # Complain if they use __PACKAGE__ as a project base class?
-
- if( @languages ) {
- DEBUG and print "Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
- if($USING_LANGUAGE_TAGS) { # An explicit language-list was given!
- @languages =
- map {; $_, I18N::LangTags::alternate_language_tags($_) }
- # Catch alternation
- map I18N::LangTags::locale2language_tag($_),
- # If it's a lg tag, fine, pass thru (untainted)
- # If it's a locale ID, try converting to a lg tag (untainted),
- # otherwise nix it.
- @languages;
- DEBUG and print "Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
+ # Its class argument has to be the base class for the current
+ # application's l10n files.
+
+ my($base_class, @languages) = @_;
+ $base_class = ref($base_class) || $base_class;
+ # Complain if they use __PACKAGE__ as a project base class?
+
+ if( @languages ) {
+ DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+ if($USING_LANGUAGE_TAGS) { # An explicit language-list was given!
+ @languages =
+ map {; $_, I18N::LangTags::alternate_language_tags($_) }
+ # Catch alternation
+ map I18N::LangTags::locale2language_tag($_),
+ # If it's a lg tag, fine, pass thru (untainted)
+ # If it's a locale ID, try converting to a lg tag (untainted),
+ # otherwise nix it.
+ @languages;
+ DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+ }
+ }
+ else {
+ @languages = $base_class->_ambient_langprefs;
}
- } else {
- @languages = $base_class->_ambient_langprefs;
- }
-
- @languages = $base_class->_langtag_munging(@languages);
-
- my %seen;
- foreach my $module_name ( map { $base_class . "::" . $_ } @languages ) {
- next unless length $module_name; # sanity
- next if $seen{$module_name}++ # Already been here, and it was no-go
- || !&_try_use($module_name); # Try to use() it, but can't it.
- return($module_name->new); # Make it!
- }
-
- return undef; # Fail!
+
+ @languages = $base_class->_langtag_munging(@languages);
+
+ my %seen;
+ foreach my $module_name ( map { $base_class . '::' . $_ } @languages ) {
+ next unless length $module_name; # sanity
+ next if $seen{$module_name}++ # Already been here, and it was no-go
+ || !&_try_use($module_name); # Try to use() it, but can't it.
+ return($module_name->new); # Make it!
+ }
+
+ return undef; # Fail!
}
###########################################################################
sub _langtag_munging {
- my($base_class, @languages) = @_;
-
- # We have all these DEBUG statements because otherwise it's hard as hell
- # to diagnose ifwhen something goes wrong.
-
- DEBUG and print "Lgs1: ", map("<$_>", @languages), "\n";
-
- if($USING_LANGUAGE_TAGS) {
- DEBUG and print "Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
- @languages = $base_class->_add_supers( @languages );
-
- push @languages, I18N::LangTags::panic_languages(@languages);
- DEBUG and print "After adding panic languages:\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
-
- push @languages, $base_class->fallback_languages;
- # You are free to override fallback_languages to return empty-list!
- DEBUG and print "Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
-
- @languages = # final bit of processing to turn them into classname things
- map {
- my $it = $_; # copy
- $it =~ tr<-A-Z><_a-z>; # lc, and turn - to _
- $it =~ tr<_a-z0-9><>cd; # remove all but a-z0-9_
- $it;
- } @languages
- ;
- DEBUG and print "Nearing end of munging:\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
- } else {
- DEBUG and print "Bypassing language-tags.\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
- }
-
- DEBUG and print "Before adding fallback classes:\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
-
- push @languages, $base_class->fallback_language_classes;
- # You are free to override that to return whatever.
-
- DEBUG and print "Finally:\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
-
- return @languages;
+ my($base_class, @languages) = @_;
+
+ # We have all these DEBUG statements because otherwise it's hard as hell
+ # to diagnose ifwhen something goes wrong.
+
+ DEBUG and warn 'Lgs1: ', map("<$_>", @languages), "\n";
+
+ if($USING_LANGUAGE_TAGS) {
+ DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+ @languages = $base_class->_add_supers( @languages );
+
+ push @languages, I18N::LangTags::panic_languages(@languages);
+ DEBUG and warn "After adding panic languages:\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+
+ push @languages, $base_class->fallback_languages;
+ # You are free to override fallback_languages to return empty-list!
+ DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+
+ @languages = # final bit of processing to turn them into classname things
+ map {
+ my $it = $_; # copy
+ $it =~ tr<-A-Z><_a-z>; # lc, and turn - to _
+ $it =~ tr<_a-z0-9><>cd; # remove all but a-z0-9_
+ $it;
+ } @languages
+ ;
+ DEBUG and warn "Nearing end of munging:\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+ }
+ else {
+ DEBUG and warn "Bypassing language-tags.\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+ }
+
+ DEBUG and warn "Before adding fallback classes:\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+
+ push @languages, $base_class->fallback_language_classes;
+ # You are free to override that to return whatever.
+
+ DEBUG and warn "Finally:\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+
+ return @languages;
}
###########################################################################
sub _ambient_langprefs {
- require I18N::LangTags::Detect;
- return I18N::LangTags::Detect::detect();
+ require I18N::LangTags::Detect;
+ return I18N::LangTags::Detect::detect();
}
###########################################################################
sub _add_supers {
- my($base_class, @languages) = @_;
-
- if(!$MATCH_SUPERS) {
- # Nothing
- DEBUG and print "Bypassing any super-matching.\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
-
- } elsif( $MATCH_SUPERS_TIGHTLY ) {
- DEBUG and print "Before adding new supers tightly:\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
- @languages = I18N::LangTags::implicate_supers( @languages );
- DEBUG and print "After adding new supers tightly:\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
-
- } else {
- DEBUG and print "Before adding supers to end:\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
- @languages = I18N::LangTags::implicate_supers_strictly( @languages );
- DEBUG and print "After adding supers to end:\n",
- " Lgs\@", __LINE__, ": ", map("<$_>", @languages), "\n";
- }
-
- return @languages;
+ my($base_class, @languages) = @_;
+
+ if (!$MATCH_SUPERS) {
+ # Nothing
+ DEBUG and warn "Bypassing any super-matching.\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+
+ }
+ elsif( $MATCH_SUPERS_TIGHTLY ) {
+ DEBUG and warn "Before adding new supers tightly:\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+ @languages = I18N::LangTags::implicate_supers( @languages );
+ DEBUG and warn "After adding new supers tightly:\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+
+ }
+ else {
+ DEBUG and warn "Before adding supers to end:\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+ @languages = I18N::LangTags::implicate_supers_strictly( @languages );
+ DEBUG and warn "After adding supers to end:\n",
+ ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
+ }
+
+ return @languages;
}
###########################################################################
###########################################################################
my %tried = ();
- # memoization of whether we've used this module, or found it unusable.
+# memoization of whether we've used this module, or found it unusable.
sub _try_use { # Basically a wrapper around "require Modulename"
- # "Many men have tried..." "They tried and failed?" "They tried and died."
- return $tried{$_[0]} if exists $tried{$_[0]}; # memoization
-
- my $module = $_[0]; # ASSUME sane module name!
- { no strict 'refs';
- return($tried{$module} = 1)
- if defined(%{$module . "::Lexicon"}) or defined(@{$module . "::ISA"});
- # weird case: we never use'd it, but there it is!
- }
-
- print " About to use $module ...\n" if DEBUG;
- {
- local $SIG{'__DIE__'};
- eval "require $module"; # used to be "use $module", but no point in that.
- }
- if($@) {
- print "Error using $module \: $@\n" if DEBUG > 1;
- return $tried{$module} = 0;
- } else {
- print " OK, $module is used\n" if DEBUG;
- return $tried{$module} = 1;
- }
+ # "Many men have tried..." "They tried and failed?" "They tried and died."
+ return $tried{$_[0]} if exists $tried{$_[0]}; # memoization
+
+ my $module = $_[0]; # ASSUME sane module name!
+ { no strict 'refs';
+ return($tried{$module} = 1)
+ if defined(%{$module . '::Lexicon'}) or defined(@{$module . '::ISA'});
+ # weird case: we never use'd it, but there it is!
+ }
+
+ DEBUG and warn " About to use $module ...\n";
+ {
+ local $SIG{'__DIE__'};
+ eval "require $module"; # used to be "use $module", but no point in that.
+ }
+ if($@) {
+ DEBUG and warn "Error using $module \: $@\n";
+ return $tried{$module} = 0;
+ }
+ else {
+ DEBUG and warn " OK, $module is used\n";
+ return $tried{$module} = 1;
+ }
}
#--------------------------------------------------------------------------
sub _lex_refs { # report the lexicon references for this handle's class
- # returns an arrayREF!
- no strict 'refs';
- my $class = ref($_[0]) || $_[0];
- print "Lex refs lookup on $class\n" if DEBUG > 1;
- return $isa_scan{$class} if exists $isa_scan{$class}; # memoization!
-
- my @lex_refs;
- my $seen_r = ref($_[1]) ? $_[1] : {};
-
- if( defined( *{$class . '::Lexicon'}{'HASH'} )) {
- push @lex_refs, *{$class . '::Lexicon'}{'HASH'};
- print "%" . $class . "::Lexicon contains ",
- scalar(keys %{$class . '::Lexicon'}), " entries\n" if DEBUG;
- }
-
- # Implements depth(height?)-first recursive searching of superclasses.
- # In hindsight, I suppose I could have just used Class::ISA!
- foreach my $superclass (@{$class . "::ISA"}) {
- print " Super-class search into $superclass\n" if DEBUG;
- next if $seen_r->{$superclass}++;
- push @lex_refs, @{&_lex_refs($superclass, $seen_r)}; # call myself
- }
-
- $isa_scan{$class} = \@lex_refs; # save for next time
- return \@lex_refs;
+ # returns an arrayREF!
+ no strict 'refs';
+ no warnings 'once';
+ my $class = ref($_[0]) || $_[0];
+ DEBUG and warn "Lex refs lookup on $class\n";
+ return $isa_scan{$class} if exists $isa_scan{$class}; # memoization!
+
+ my @lex_refs;
+ my $seen_r = ref($_[1]) ? $_[1] : {};
+
+ if( defined( *{$class . '::Lexicon'}{'HASH'} )) {
+ push @lex_refs, *{$class . '::Lexicon'}{'HASH'};
+ DEBUG and warn '%' . $class . '::Lexicon contains ',
+ scalar(keys %{$class . '::Lexicon'}), " entries\n";
+ }
+
+ # Implements depth(height?)-first recursive searching of superclasses.
+ # In hindsight, I suppose I could have just used Class::ISA!
+ foreach my $superclass (@{$class . '::ISA'}) {
+ DEBUG and warn " Super-class search into $superclass\n";
+ next if $seen_r->{$superclass}++;
+ push @lex_refs, @{&_lex_refs($superclass, $seen_r)}; # call myself
+ }
+
+ $isa_scan{$class} = \@lex_refs; # save for next time
+ return \@lex_refs;
}
sub clear_isa_scan { %isa_scan = (); return; } # end on a note of simplicity!
-###########################################################################
1;
-
-__END__
-
-HEY YOU! You need some FOOD!
-
-
- ~~ Tangy Moroccan Carrot Salad ~~
-
-* 6 to 8 medium carrots, peeled and then sliced in 1/4-inch rounds
-* 1/4 teaspoon chile powder (cayenne, chipotle, ancho, or the like)
-* 1 tablespoon ground cumin
-* 1 tablespoon honey
-* The juice of about a half a big lemon, or of a whole smaller one
-* 1/3 cup olive oil
-* 1 tablespoon of fresh dill, washed and chopped fine
-* Pinch of salt, maybe a pinch of pepper
-
-Cook the carrots in a pot of boiling water until just tender -- roughly
-six minutes. (Just don't let them get mushy!) Drain the carrots.
-
-In a largish bowl, combine the lemon juice, the cumin, the chile
-powder, and the honey. Mix well.
-Add the olive oil and whisk it together well. Add the dill and stir.
-
-Add the warm carrots to the bowl and toss it all to coat the carrots
-well. Season with salt and pepper, to taste.
-
-Serve warm or at room temperature.
-
-The measurements here are very approximate, and you should feel free to
-improvise and experiment. It's a very forgiving recipe. For example,
-you could easily halve or double the amount of cumin, or use chopped mint
-leaves instead of dill, or lime juice instead of lemon, et cetera.
-
-[end]
-
projects / p5sagit/p5-mst-13.2.git / blobdiff