liblog-report-perl 0.998-1 / usr / share / perl5 / Log / Report / Extract / Template.pm

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# Copyrights 2007-2013 by [Mark Overmeer].
#  For other contributors see ChangeLog.
# See the manual pages for details on the licensing terms.
# Pod stripped from pm file by OODoc 2.01.

use warnings;
use strict;

package Log::Report::Extract::Template;
use vars '$VERSION';
$VERSION = '0.998';

use base 'Log::Report::Extract';

use Log::Report 'log-report';


sub init($)
{   my ($self, $args) = @_;
    $self->SUPER::init($args);
    $self->{LRET_domain}  = $args->{domain}
        or error "template extract requires explicit domain";

    $self->{LRET_pattern} = $args->{pattern};
    $self;
}


sub domain()  {shift->{LRET_domain}}
sub pattern() {shift->{LRET_pattern}}


sub process($@)
{   my ($self, $fn, %opts) = @_;

    my $charset = $opts{charset} || 'utf-8';
    info __x"processing file {fn} in {charset}", fn=> $fn, charset => $charset;

    my $pattern = $opts{pattern} || $self->pattern
        or error __"need pattern to scan for, either via new() or process()";

    # Slurp the whole file
    local *IN;
    open IN, "<:encoding($charset)", $fn
        or fault __x"cannot read template from {fn}", fn => $fn;

    undef $/;
    my $text = <IN>;
    close IN;

    my $domain  = $self->domain;
    $self->_reset($domain, $fn);

    if(ref $pattern eq 'CODE')
    {   return $pattern->($fn, \$text);
    }
    elsif($pattern =~ m/^TT([12])-(\w+)$/)
    {   return $self->scanTemplateToolkit($1, $2, $fn, \$text);
    }
    else
    {   error __x"unknown pattern {pattern}", pattern => $pattern;
    }
    ();
}

sub scanTemplateToolkit($$$$)
{   my ($self, $version, $function, $fn, $textref) = @_;

    # Split the whole file on the pattern in four fragments per match:
    #       (text, leading, needed trailing, text, leading, ...)
    # f.i.  ('', '[% loc("', 'some-msgid', '", params) %]', ' more text')
    my @frags
      = $version==1 ? split(/[\[%]%(.*?)%[%\]]/s, $$textref)
      :               split(/\[%(.*?)%\]/s, $$textref);

    my $domain     = $self->domain;

    my $linenr     = 1;
    my $msgs_found = 0;

    # pre-compile the regexes, for performance
    my $pipe_func_block  = qr/^\s*\|\s*$function\b/;
    my $msgid_pipe_func  = qr/^\s*(["'])([^\r\n]+?)\1\s*\|\s*$function\b/;
    my $func_msgid_multi = qr/(\b$function\s*\(\s*)(["'])([^\r\n]+?)\2/s;

    while(@frags > 2)
    {   my ($skip_text, $take) = (shift @frags, shift @frags);
        $linenr += $skip_text =~ tr/\n//;
        if($take =~ $pipe_func_block)
        {   # [%|loc(...)%]$msgid[%END%]
            if(@frags < 2 || $frags[1] ne 'END')
            {   error __x"template syntax error, no END in {fn} line {line}"
                  , fn => $fn, line => $linenr;
            }
            my $msgid  = $frags[0];  # next content
            my $plural = $msgid =~ s/\|(.*)// ? $1 : undef;
            $self->store($domain, $fn, $linenr, $msgid, $plural);
            $msgs_found++;

            $linenr   += $take =~ tr/\n//;
            next;
        }

        if($take =~ $msgid_pipe_func)
        {   # [%|loc(...)%]$msgid[%END%]
            my $msgid  = $2;
            my $plural = $msgid =~ s/\|(.*)// ? $1 : undef;
            $self->store($domain, $fn, $linenr, $msgid, $plural);
            $msgs_found++;

            $linenr   += $take =~ tr/\n//;
            next;
        }

        # loc($msgid, ...) form, can appear more than once
        my @markup = split $func_msgid_multi, $take;
        while(@markup > 4)
        {   # quads with text, call, quote, msgid
            $linenr   += ($markup[0] =~ tr/\n//)
                      +  ($markup[1] =~ tr/\n//);
            my $msgid  = $markup[3];
            my $plural = $msgid =~ s/\|(.*)// ? $1 : undef;
            $self->store($domain, $fn, $linenr, $msgid, $plural);
            $msgs_found++;
            splice @markup, 0, 4;
        }
        $linenr += $markup[-1] =~ tr/\n//; # rest of container
    }
#   $linenr += $frags[-1] =~ tr/\n//; # final page fragment not needed

    $msgs_found;
}

#----------------------------------------------------

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