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New parser in Locale::PO supports obsolete entries and fixes other bugs.

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Removed the corresponding workaround from check-accelerator-conflicts.pl.
This commit is contained in:
Kalle Olavi Niemitalo 2006-02-12 00:33:11 +02:00 committed by Kalle Olavi Niemitalo
parent 37bea9cfdb
commit f4015a985c
2 changed files with 312 additions and 187 deletions
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483
po/perl/Locale/PO.pm
View File

@ -23,9 +23,9 @@ use fields
qw(msgstr_n),
# Multiline strings excluding the trailing newline and comment
# markers, or undef if there are no such lines.
qw(comment automatic reference),
qw(comment automatic reference _flag),
# Flags; see the accessors with the same names.
qw(fuzzy c_format php_format);
qw(fuzzy c_format php_format _obsolete);
#use vars qw($VERSION @ISA @EXPORT @EXPORT_OK);
#use locale;
@ -123,6 +123,11 @@ sub fuzzy {
@_ ? $self->{'fuzzy'} = shift: $self->{'fuzzy'};
}
sub obsolete {
my Locale::PO $self = shift;
@_ ? $self->{_obsolete} = shift : $self->{_obsolete};
}
sub c_format {
my Locale::PO $self = shift;
@_ ? $self->{'c_format'} = shift: $self->{'c_format'};
@ -166,11 +171,11 @@ sub dump {
my Locale::PO $self = shift;
my $dump;
$dump = $self->_dump_multi_comment( $self->comment, "# " )
if ( $self->comment );
if defined( $self->comment );
$dump .= $self->_dump_multi_comment( $self->automatic, "#. " )
if ( $self->automatic );
if defined( $self->automatic );
$dump .= $self->_dump_multi_comment( $self->reference, "#: " )
if ( $self->reference );
if defined( $self->reference );
my $flags = '';
$flags .= ", fuzzy" if $self->fuzzy;
$flags .= ", c-format"
@ -182,6 +187,9 @@ sub dump {
$flags .= ", php-format"
if ( defined( $self->php_format )
and $self->php_format );
$flags .= ", no-php-format"
if ( defined( $self->php_format )
and !$self->php_format );
$dump .= "#$flags\n" if length $flags;
$dump .= "msgid " . $self->_normalize_str( $self->msgid );
$dump .= "msgid_plural " . $self->_normalize_str( $self->msgid_plural )
@ -194,6 +202,7 @@ sub dump {
for sort { $a <=> $b } keys %$msgstr_n;
}
$dump =~ s/^(?!#)/#~ /gm if $self->{_obsolete};
$dump .= "\n";
return $dump;
}
@ -224,7 +233,7 @@ sub quote {
sub dequote {
my $self = shift; # can be called as a class method
my $string = shift;
$string =~ s/^"(.*)"/$1/;
$string =~ s/^"(.*)"/$1/gm;
$string =~ s/\\"/"/g;
return $string;
}
@ -260,150 +269,188 @@ sub save_file {
sub load_file_asarray {
my $self = shift; # normally called as a class method
$self->load_file( $_[0], 0 );
my $file = shift;
my @entries;
my $po;
my $last_buffer;
use constant {
# Nothing other than comments has been seen for $po yet.
# $po may also be undef.
# On comment: save it, and stay in this state.
# On msgid: save it, and switch to STATE_STRING.
# On some other string: warn that the msgid is missing,
# and redo in STATE_STRING.
STATE_COMMENT => 1,
# A non-comment string has been seen for $po.
# $po can not be undef.
# If $po->{msgid} is undef, that has already been warned about.
# On comment: close the entry, and redo in STATE_COMMENT.
# On msgid: close the entry, and redo in STATE_COMMENT.
# On some other string: save it, and stay in this state.
STATE_STRING => 2,
};
my $state = STATE_COMMENT;
local $/ = "\n";
local $_;
# "my sub" not yet implemented
my $check_and_push_entry = sub {
# Call this only if defined($po).
warn "$file:$.: Expected msgid\n"
unless defined $po->{msgid} or $state == STATE_STRING;
if (defined $po->{msgid_plural}) {
warn "$file:$.: Expected msgstr[n]\n"
unless defined $po->{msgstr_n};
}
else {
warn "$file:$.: Expected msgstr\n"
unless defined $po->{msgstr};
}
my @flags;
@flags = split(/[\s,]+/, $po->{_flag}) if defined $po->{_flag};
$po->fuzzy(1) if grep( /^fuzzy$/i, @flags);
$po->c_format(1) if grep( /^c-format$/i, @flags);
$po->c_format(0) if grep( /^no-c-format$/i, @flags);
$po->php_format(1) if grep( /^php-format$/i, @flags);
$po->php_format(0) if grep(/^no-php-format$/i, @flags);
push( @entries, $po);
$po = undef;
$last_buffer = undef;
};
open( IN, "<$file" ) or return undef;
LINE: while (<IN>) {
chomp;
my $obsolete = s/^#~ ?//;
next LINE if /^$/;
if (/^"/) {
# Continued string. This is very common, so check it first.
warn("$file:$.: There is no string to be continued\n"), next LINE
unless defined $last_buffer;
$$last_buffer .= "\n$_";
}
elsif (/^#([,.:]?)()$/ or /^#([,.:]?) (.*)$/) {
&$check_and_push_entry if $state == STATE_STRING;
$state = STATE_COMMENT;
$po = new Locale::PO unless defined $po;
my $comment;
if ($1 eq "") { $comment = \$po->{comment} }
elsif ($1 eq ",") { $comment = \$po->{_flag} }
elsif ($1 eq ".") { $comment = \$po->{automatic} }
elsif ($1 eq ":") { $comment = \$po->{reference} }
else { warn "Bug: did not recognize '$1'"; next LINE }
if (defined( $$comment )) { $$comment .= "\n$2" }
else { $$comment = $2 }
}
elsif (/^msgid (.*)$/) {
&$check_and_push_entry if $state == STATE_STRING;
$state = STATE_STRING;
$po = new Locale::PO unless defined $po;
$last_buffer = \($po->{msgid} = $1);
}
elsif (/^msgid_plural (.*)$/) {
if ($state == STATE_COMMENT) {
warn "$file:$.: Expected msgid\n";
$po = new Locale::PO unless defined $po;
$state = STATE_STRING;
}
if (defined $po->{msgid_plural}) {
warn "$file:$.: Replacing previous msgid_plural\n";
}
elsif (defined $po->{msgstr}) {
warn "$file:$.: Should not have msgid_plural with msgstr\n";
}
$last_buffer = \($po->{msgid_plural} = $1);
}
elsif (/^msgstr (.*)$/) {
if ($state == STATE_COMMENT) {
warn "$file:$.: Expected msgid\n";
$po = new Locale::PO unless defined $po;
$state = STATE_STRING;
}
if (defined $po->{msgstr}) {
warn "$file:$.: Replacing previous msgstr\n";
}
elsif (defined $po->{msgid_plural}) {
warn "$file:$.: Should not have msgstr with msgid_plural\n";
}
elsif (defined $po->{msgstr_n}) {
warn "$file:$.: Should not have msgstr with msgstr[n]\n";
}
$last_buffer = \($po->{msgstr} = $1);
}
elsif (/^msgstr\[(\d+)\] (.*)$/) {
if ($state == STATE_COMMENT) {
warn "$file:$.: Expected msgid\n";
$po = new Locale::PO unless defined $po;
$state = STATE_STRING;
}
if (defined $po->{msgstr_n}) {
warn "$file:$.: Replacing previous msgstr[$1]\n"
if defined $po->{msgstr_n}{$1};
}
elsif (defined $po->{msgstr}) {
warn "$file:$.: Should not have msgstr[n] with msgstr\n";
}
$last_buffer = \($po->{msgstr_n}{$1} = $2);
}
else {
warn "$file:$.: Ignoring strange line: $_\n";
}
$po->{_obsolete} = 1 if $obsolete && defined $po;
}
&$check_and_push_entry if defined $po;
close IN;
return \@entries;
}
sub load_file_ashash {
my $self = shift; # normally called as a class method
$self->load_file( $_[0], 1 );
my $file = shift;
my $entries = $self->load_file_asarray( $file );
my %entries;
ENTRY: foreach my $po (@$entries) {
my $msgid = $po->msgid;
if (!defined( $msgid )) {
# The entry had no msgid line in the input file.
# &load_file_asarray already warned about that. Such
# entries have no identity and cannot be put in the hash.
next ENTRY;
}
# The hash keys were quoted strings in Locale-PO-0.16,
# so keep them that way. However, if the same string has
# been quoted in two different ways, there should not be
# two different hash entries. Canonicalize the key.
my $key = $po->quote( $po->dequote( $msgid ));
if (exists( $entries{$key} ) && $entries{$key}->msgstr =~ /\w/) {
# This msgid has a translation already. Don't replace it.
next ENTRY;
}
$entries{$key} = $po;
}
return \%entries;
}
sub load_file {
my $self = shift; # normally called as a class method
my $file = shift;
my $ashash = shift;
my ( @entries, %entries );
my $po;
my %buffer;
my $last_buffer;
local $/ = "\n";
local $_;
open( IN, "<$file" ) or return undef;
while (<IN>) {
chop;
if (/^$/) {
# Empty line. End of an entry.
if ( defined($po) ) {
$po->msgid( $buffer{msgid} ) if defined $buffer{msgid};
$po->msgid_plural( $buffer{msgid_plural} )
if defined $buffer{msgid_plural};
$po->msgstr( $buffer{msgstr} ) if defined $buffer{msgstr};
$po->msgstr_n( $buffer{msgstr_n} ) if defined $buffer{msgstr_n};
if ($ashash) {
my $key = $po->msgid;
if ( defined( $entries{$key} ) ) {
# Prefer translated ones.
$entries{ $po->msgid } = $po
if $entries{$key}->msgstr !~ /\w/;
return $self->load_file_ashash($file);
}
else {
# No previous entry
$entries{ $po->msgid } = $po;
return $self->load_file_asarray($file);
}
}
else {
push( @entries, $po );
}
undef $po;
undef $last_buffer;
%buffer = ();
}
}
elsif ( /^# (.*)/ or /^#()$/ ) {
# Translator comments
$po = new Locale::PO unless defined($po);
if ( defined( $po->comment ) ) {
$po->comment( $po->comment . "\n$1" );
}
else {
$po->comment($1);
}
}
elsif (/^#\. (.*)/) {
# Automatic comments
$po = new Locale::PO unless defined($po);
if ( defined( $po->automatic ) ) {
$po->automatic( $po->automatic . "\n$1" );
}
else {
$po->automatic($1);
}
}
elsif (/^#: (.*)/) {
# reference
$po = new Locale::PO unless defined($po);
if ( defined( $po->reference ) ) {
$po->reference( $po->reference . "\n$1" );
}
else {
$po->reference($1);
}
}
elsif (/^#, (.*)/) {
# flags
my $flags = $1;
$po = new Locale::PO unless defined($po);
$po->fuzzy(1) if $flags =~ /fuzzy/i;
$po->c_format(1) if $flags =~ /c-format/i;
$po->c_format(0) if $flags =~ /no-c-format/i;
$po->php_format(1) if $flags =~ /php-format/i;
}
elsif (/^msgid (.*)/) {
$po = new Locale::PO unless defined($po);
$buffer{msgid} = $self->dequote($1);
$last_buffer = \$buffer{msgid};
}
elsif (/^msgid_plural (.*)/) {
$po = new Locale::PO unless defined($po);
$buffer{msgid_plural} = $self->dequote($1);
$last_buffer .= \$buffer{msgid_plural};
}
elsif (/^msgstr (.*)/) {
# translated string
$buffer{msgstr} = $self->dequote($1);
$last_buffer = \$buffer{msgstr};
}
elsif (/^msgstr\[(\d+)\] (.*)/) {
# translated string
$buffer{msgstr_n}{$1} = $self->dequote($2);
$last_buffer = \$buffer{msgstr_n}{$1};
}
elsif (/^"/) {
# contined string
$$last_buffer .= $self->dequote($_);
}
else {
warn "Strange line in $file: $_\n";
}
}
if ( defined($po) ) {
$po->msgid( $buffer{msgid} ) if defined $buffer{msgid};
$po->msgid_plural( $buffer{msgid_plural} )
if defined $buffer{msgid_plural};
$po->msgstr( $buffer{msgstr} ) if defined $buffer{msgstr};
$po->msgstr_n( $buffer{msgstr_n} ) if defined $buffer{msgstr_n};
$entries{ $po->msgid } = $po if $ashash;
push( @entries, $po ) unless $ashash;
}
close IN;
return ( $ashash ? \%entries : \@entries );
}
# Autoload methods go after =cut, and are processed by the autosplit program.
@ -427,6 +474,7 @@ Locale::PO - Perl module for manipulating .po entries from GNU gettext
[$string =] $po->automatic([new string]);
[$string =] $po->reference([new string]);
[$value =] $po->fuzzy([value]);
[$value =] $po->obsolete([value]);
[$value =] $po->c_format([value]);
[$value =] $po->php_format([value]);
print $po->dump;
@ -447,6 +495,51 @@ This module simplifies management of GNU gettext .po files and is an
alternative to using emacs po-mode. It provides an object-oriented
interface in which each entry in a .po file is a Locale::PO object.
=head2 Levels of Quoting
When you use methods of Locale::PO, you need to distinguish between
three possible levels of quoting strings. These levels are described
below. The descriptions also list how the following sample msgid
string would be quoted in each level.
msgid "The characters /\\ denote the \"AND\" operator.\n"
"Please enter all numbers in octal."
=over
=item FULLY-QUOTED
The same format as in a PO file: the string may consist of multiple
lines, and each line has double-quote characters around it and may
contain backslash sequences. Any double-quote or backslash characters
that should be part of the data must be escaped with backslashes.
The example in Perl syntax: C<qq("The characters /\\\\ denote the
\\"AND\\" operator.\\n"\n"Please enter all numbers in octal.")>
=item BACKSLASHED
The string may consist of multiple lines. The lines do not have
double-quote characters around them, but they may contain backslash
sequences. Any backslash characters that should be part of the data
must be escaped with backslashes, but double-quote characters must not.
The example in Perl syntax: C<qq(The characters /\\\\ denote the
"AND" operator.\\n\nPlease enter all numbers in octal.)>
=item NOT-QUOTED
This is the format that a C program would pass to the C<gettext>
function or output to a terminal device. Any remaining quotes are
part of the data itself, and backslash escapes have been replaced
with control characters. Locale::PO does not currently support
this quoting level.
The example in Perl syntax: C<qq(The characters /\\ denote the "AND"
operator.\nPlease enter all numbers in octal.)>
=back
=head1 METHODS
=over 4
@ -459,8 +552,9 @@ a list/hash of the form:
-option=>value, -option=>value, etc.
Where options are msgid, msgstr, comment, automatic, reference,
fuzzy, and c-format. See accessor methods below.
Where options are msgid, msgstr, comment, automatic, reference, fuzzy,
c-format, and no-c-format. See accessor methods below. Currently, you
cannot set the "obsolete" or "php-format" flags via options.
To generate a po file header, add an entry with an empty
msgid, like this:
@ -474,26 +568,40 @@ msgid, like this:
"Content-Type: text/plain; charset=CHARSET\\n" .
"Content-Transfer-Encoding: ENCODING\\n");
Note that the C<msgid> and C<msgstr> must be in BACKSLASHED form.
=item msgid
Set or get the untranslated string from the object.
This method expects the new string in unquoted form
but returns the current string in quoted form.
The value is C<undef> if there is no such string for this message, not
even an empty string. If the message was loaded from a PO file, this
can occur if there are comments after the last C<msgid> line. The
loading functions warn about such omissions.
This method expects the new string in BACKSLASHED form
but returns the current string in FULLY-QUOTED form.
=item msgid_plural
Set or get the untranslated plural string from the object.
Set or get the untranslated plural string from the object. The value
is C<undef> if there is no plural form for this message.
This method expects the new string in unquoted form
but returns the current string in quoted form.
This method expects the new string in BACKSLASHED form
but returns the current string in FULLY-QUOTED form.
=item msgstr
Set or get the translated string from the object.
This method expects the new string in unquoted form
but returns the current string in quoted form.
The value is C<undef> if there is no such string for this message, not
even an empty string. If the message was loaded from a PO file, this
can occur if there are comments after the last C<msgid> line, or if
there are two C<msgid> lines without a C<msgstr> between them. The
loading functions warn about such omissions.
This method expects the new string in BACKSLASHED form
but returns the current string in FULLY-QUOTED form.
=item msgstr_n
@ -508,14 +616,16 @@ the strings. eg:
}
);
This method expects the new strings in unquoted form
but returns the current strings in quoted form.
The value C<undef> should be treated the same as an empty hash.
This method expects the new strings in BACKSLASHED form
but returns the current strings in FULLY-QUOTED form.
=item comment
Set or get translator comments from the object.
If there are no such comments, then the value is undef. Otherwise,
If there are no such comments, then the value is C<undef>. Otherwise,
the value is a string that contains the comment lines delimited with
"\n". The string includes neither the S<"# "> at the beginning of
each comment line nor the newline at the end of the last comment line.
@ -525,7 +635,7 @@ each comment line nor the newline at the end of the last comment line.
Set or get automatic comments from the object (inserted by
emacs po-mode or xgettext).
If there are no such comments, then the value is undef. Otherwise,
If there are no such comments, then the value is C<undef>. Otherwise,
the value is a string that contains the comment lines delimited with
"\n". The string includes neither the S<"#. "> at the beginning of
each comment line nor the newline at the end of the last comment line.
@ -535,7 +645,7 @@ each comment line nor the newline at the end of the last comment line.
Set or get reference marking comments from the object (inserted
by emacs po-mode or gettext).
If there are no such comments, then the value is undef. Otherwise,
If there are no such comments, then the value is C<undef>. Otherwise,
the value is a string that contains the comment lines delimited with
"\n". The string includes neither the S<"#: "> at the beginning of
each comment line nor the newline at the end of the last comment line.
@ -545,6 +655,11 @@ each comment line nor the newline at the end of the last comment line.
Set or get the fuzzy flag on the object ("check this translation").
When setting, use 1 to turn on fuzzy, and 0 to turn it off.
=item obsolete
Set or get the obsolete flag on the object ("no longer used").
When setting, use 1 to turn on obsolete, and 0 to turn it off.
=item c_format
Set or get the c-format or no-c-format flag on the object.
@ -563,14 +678,18 @@ Returns the entry as a string, suitable for output to a po file.
=item quote
Applies po quotation rules to a string, and returns the quoted
string. The quoted string will have all existing double-quote
characters escaped by backslashes, and will be enclosed in double
quotes.
Converts a string from BACKSLASHED to FULLY-QUOTED form.
Specifically, the quoted string will have all existing double-quote
characters escaped by backslashes, and each line will be enclosed in
double quotes. Preexisting backslashes will not be doubled.
=item dequote
Returns a quoted po string to its natural form.
Converts a string from FULLY-QUOTED to BACKSLASHED form.
Specifically, it first removes the double-quote characters that
surround each line. After this, each remaining double-quote character
should have a backslash in front of it; the method then removes those
backslashes. Backslashes in any other position will be left intact.
=item load_file_asarray
@ -578,13 +697,21 @@ Given the filename of a po-file, reads the file and returns a
reference to a list of Locale::PO objects corresponding to the contents of
the file, in the same order.
If the file cannot be read, then this method returns C<undef>, and you
can check C<$!> for the actual error. If the file does not follow the
expected syntax, then the method generates warnings but keeps going.
Other errors (e.g. out of memory) may result in C<die> being called,
of course.
=item load_file_ashash
Given the filename of a po-file, reads the file and returns a
reference to a hash of Locale::PO objects corresponding to the contents of
the file. The hash keys are the untranslated strings, so this is a cheap
way to remove duplicates. The method will prefer to keep entries that
have been translated.
the file. The hash keys are the untranslated strings (in BACKSLASHED form),
so this is a cheap way to remove duplicates. The method will prefer to keep
entries that have been translated.
This handles errors in the same way as C<load_file_asarray> does.
=item load_file
@ -649,13 +776,28 @@ Reformatted this list of changes.
=item Z<>2006-02-05 Kalle Olavi Niemitalo <kon@iki.fi>
Added comments about the fields of Locale::PO objects.
The load_file function binds $/ and $_ dynamically.
Renamed normalize_str to _normalize_str, and dump_multi_comment to _dump_multi_comment.
Added comments about the fields of C<Locale::PO> objects.
The C<load_file> function binds C<$/> and C<$_> dynamically.
Renamed C<normalize_str> to C<_normalize_str>, and C<dump_multi_comment> to C<_dump_multi_comment>.
POD changes:
Documented C<load_file> and C<save_file>.
=item Z<>2006-02-11 Kalle Olavi Niemitalo <kon@iki.fi>
Rewrote the file parser. It now warns about various inconsistencies, and no longer relies on empty lines.
The parser writes directly to fields of Locale::PO objects, preserving internal newlines in strings. Changed C<dequote> to process all lines of multi-line strings.
The parser supports obsolete entries. Added the C<_obsolete> field and the C<obsolete> method. C<dump> comments the entry out if it is obsolete.
The parser preserves the original string of flags and scans it more carefully. Added the C<_flag> field. Implemented "no-php-format".
C<dump> dumps comments even if they are C<eq "0">.
POD changes:
Documented the bugs fixed with the changes above.
Documented levels of quoting, and the exact behaviour of C<quote> and C<unquote>.
Documented the C<obsolete> method.
Documented error handling in C<load_file_asarray> and C<load_file_ashash>.
Documented when C<msgid>, C<msgstr> etc. can return C<undef>.
=back
=head1 COPYRIGHT AND LICENSE
@ -669,28 +811,18 @@ redistribute it and/or modify it under the same terms as Perl itself.
If you load_file then save_file, the output file may have slight
cosmetic differences from the input file (an extra blank line here or there).
Locale::PO does not understand obsolete entries that msgmerge comments
out with "#~", and it warns about every such line. The warnings can
be silenced via C<$SIG{__WARN__}>, but that isn't very clean.
Document the situations in which C<msgstr> et al can return C<undef>.
The C<c_format> and C<php_format> methods are documented: "1 implies
c-format, 0 implies no-c-format, and blank or undefined implies
neither." However, the implementation seems to treat empty strings
the same as 0.
Locale::PO either discards or corrupts the "#," flags it does not
recognize: "objc-format" becomes "c-format", and "no-php-format"
becomes "php-format". Unrecognized flags should be preserved;
perhaps the order of flags should also be preserved.
Locale::PO discards the "#," flags it does not recognize.
Unrecognized flags should be preserved; perhaps the order of flags
should also be preserved.
Names of flags are case-insensitive in Locale::PO but case-sensitive
in GNU Gettext.
Locale::PO requires blank lines between entries, but Uniforum style PO
files don't have any.
The C<quote> and C<dequote> methods assume Perl knows the encoding
of the string. If it doesn't, they'll treat each 0x5C byte as a
backslash even if it's actually part of a multibyte character.
@ -705,9 +837,10 @@ Gettext doesn't support.
Locale::PO does not save the line numbers at which entries begin or
end in the PO file. These would be useful in error messages.
The C<msgid> and C<msgstr> methods return quoted strings, but they
expect unquoted strings as input. It would be better to have both
quoted or both unquoted; or perhaps C<< $po->msgid(-quoted => 1) >>.
The C<msgid> and C<msgstr> methods return FULLY-QUOTED strings, but
they expect BACKSLASHED strings as input. It would be better to have
both quoted or both unquoted; or perhaps C<< $po->msgid(-level =>
'BACKSLASHED') >>.
Locale::PO discards all types of comments it does not recognize.
The B<msgmerge> program of GNU gettext-tools 0.14.3 does the same,

10
po/perl/check-accelerator-conflicts.pl
View File

@ -23,13 +23,8 @@ sub check_po_file ($)
my($po_file_name) = @_;
my %contexts;
my $warnings = 0;
my $pos = do {
# Locale::PO 0.16 doesn't understand "#~" obsolete lines and
# spews warnings.
local $SIG{__WARN__} = sub {};
Locale::PO->load_file_asarray($po_file_name)
my $pos = Locale::PO->load_file_asarray($po_file_name)
or warn "$po_file_name: $!\n", return 2;
};
foreach my $po (@$pos) {
next if $po->fuzzy();
my $msgstr = $po->msgstr()
@ -159,9 +154,6 @@ still available. This has not been implemented.
=head2 Waiting for Locale::PO fixes
Locale::PO does not understand "#~" lines and spews warnings about
them. There is an ugly hack to hide these warnings.
The warning messages should include line numbers, so that users of
Emacs could conveniently edit the conflicting part of the PO file.
This is not feasible with the current version of Locale::PO.