Context Navigation

source: trunk/gsdl/perllib/plugins/HTMLPlug.pm@ 2695

Last change on this file since 2695 was 2695, checked in by jrm21, 23 years ago
Allow spaces in img src=... tags if surrounded with dbl quotes.
Property svn:executable set to ``* Property svn:keywords set to `Author Date Id Revision`
File size: 19.1 KB

Rev	Line
[585]	1	###########################################################################
	2	#
	3	# HTMLPlug.pm -- basic html plugin
[808]	4	#
[585]	5	# A component of the Greenstone digital library software
	6	# from the New Zealand Digital Library Project at the
	7	# University of Waikato, New Zealand.
	8	#
	9	# Copyright (C) 1999 New Zealand Digital Library Project
	10	#
	11	# This program is free software; you can redistribute it and/or modify
	12	# it under the terms of the GNU General Public License as published by
	13	# the Free Software Foundation; either version 2 of the License, or
	14	# (at your option) any later version.
	15	#
	16	# This program is distributed in the hope that it will be useful,
	17	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	# GNU General Public License for more details.
	20	#
	21	# You should have received a copy of the GNU General Public License
	22	# along with this program; if not, write to the Free Software
	23	# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	24	#
	25	###########################################################################
	26
[808]	27	#
	28	# Note that this plugin handles frames only in a very simple way
	29	# i.e. each frame is treated as a separate document. This means
	30	# search results will contain links to individual frames rather
	31	# than linking to the top level frameset.
	32	# There may also be some problems caused by the _parent target
	33	# (it's removed by this plugin)
	34	# To use frames properly you'll need to use the WebPlug plugin.
	35	#
[585]	36
[808]	37
[585]	38	package HTMLPlug;
	39
[1435]	40	use BasPlug;
[1010]	41	use ghtml;
[1891]	42	use unicode;
[585]	43	use util;
[808]	44	use parsargv;
[585]	45
	46	sub BEGIN {
[1435]	47	@ISA = ('BasPlug');
[585]	48	}
	49
[808]	50	sub print_usage {
	51	print STDERR "\n usage: plugin HTMLPlug [options]\n\n";
	52	print STDERR " options:\n";
	53	print STDERR " -nolinks Don't make any attempt to trap links (setting this flag may\n";
	54	print STDERR " improve speed of building/importing but any relative links within\n";
	55	print STDERR " documents will be broken).\n";
	56	print STDERR " -keep_head Don't remove headers from html files.\n";
	57	print STDERR " -no_metadata Don't attempt to extract any metadata from files.\n";
	58	print STDERR " -metadata_fields Comma separated list of metadata fields to attempt to extract.\n";
[1190]	59	print STDERR " Defaults to 'Title'.\n";
[1609]	60	print STDERR " Use 'tag<tagname>' to have the contents of the first <tagname>\n";
	61	print STDERR " pair put in a metadata element called 'tagname' Capitalise \n";
	62	print STDERR " 'tagname' as you want the metadata capitalised in the GML \n";
	63	print STDERR " file, since the tag extraction is case insensitive.\n";
[1605]	64	print STDERR " -hunt_creator_metadata Find as much metadata as possible on authorship and place it in the\n ";
	65	print STDERR " 'Creator' field. Requires the -metadata_fields flag.\n ";
[2342]	66	print STDERR " -file_is_url Set if input filenames make up url of original source documents\n";
	67	print STDERR " e.g. if a web mirroring tool was used to create the import\n";
	68	print STDERR " directory structure\n";
[965]	69	print STDERR " -assoc_files Perl regular expression of file extensions to associate with\n";
[1686]	70	print STDERR " html documents. Defaults to '(?i)\.(jpe?g\|gif\|png\|css)\$'\n";
[900]	71	print STDERR " -rename_assoc_files Renames files associated with documents (e.g. images). Also\n";
	72	print STDERR " creates much shallower directory structure (useful when creating\n";
	73	print STDERR " collections to go on cd-rom).\n\n";
[1410]	74	print STDERR " -title_sub Substitution expression to modify string stored as Title.\n";
	75	print STDERR " Used by, for example, PDFHtml to remove Page 1 etc from text\n";
	76	print STDERR " chosen to be used as the title.\n";
[808]	77	}
	78
[585]	79	sub new {
[808]	80	my $class = shift (@_);
[1435]	81	my $self = new BasPlug ($class, @_);
[585]	82
[808]	83	if (!parsargv::parse(\@_,
	84	q^nolinks^, \$self->{'nolinks'},
	85	q^keep_head^, \$self->{'keep_head'},
	86	q^no_metadata^, \$self->{'no_metadata'},
	87	q^metadata_fields/.*/Title^, \$self->{'metadata_fields'},
[1602]	88	q^hunt_creator_metadata^, \$self->{'hunt_creator_metadata'},
[900]	89	q^w3mir^, \$self->{'w3mir'},
[2342]	90	q^file_is_url^, \$self->{'file_is_url'},
[1686]	91	q^assoc_files/.*/(?i)\.(jpe?g\|gif\|png\|css)$^, \$self->{'assoc_files'},
[1220]	92	q^rename_assoc_files^, \$self->{'rename_assoc_files'},
[1410]	93	q^title_sub/.*/^, \$self->{'title_sub'},
[1220]	94	"allow_extra_options")) {
[1244]	95
	96	print STDERR "\nIncorrect options passed to HTMLPlug, check your collect.cfg configuration file\n";
[808]	97	&print_usage();
	98	die "\n";
	99	}
[2342]	100
	101	# retain this for backward compatibility (w3mir option was replaced by
	102	# file_is_url)
	103	if ($self->{'w3mir'}) {
	104	$self->{'file_is_url'} = 1;
	105	}
[1243]	106
[808]	107	$self->{'aux_files'} = {};
	108	$self->{'dir_num'} = 0;
	109	$self->{'file_num'} = 0;
[1410]	110
[585]	111	return bless $self, $class;
	112	}
	113
[1243]	114
	115	sub get_default_block_exp {
[585]	116	my $self = shift (@_);
	117
[2564]	118	return q^(?i)\.(gif\|jpe?g\|png\|css)$^;
[585]	119	}
	120
[1243]	121	sub get_default_process_exp {
[808]	122	my $self = shift (@_);
[585]	123
[1403]	124	# the last option is an attempt to encode the concept of an html query ...
	125	return q^(?i)(\.html?\|\.shtml\|\.shm\|\.asp\|\.php\|\.cgi\|.+\?.+=.*)$^;
[1243]	126	}
[721]	127
[1243]	128
	129	# do plugin specific processing of doc_obj
	130	sub process {
	131	my $self = shift (@_);
	132	my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj) = @_;
[1431]	133	my $outhandle = $self->{'outhandle'};
[1243]	134
[1431]	135	print $outhandle "HTMLPlug: processing $file\n"
[808]	136	if $self->{'verbosity'} > 1;
[721]	137
[808]	138	my $cursection = $doc_obj->get_top_section();
[1220]	139
[1243]	140	$self->extract_metadata ($textref, $metadata, $doc_obj, $cursection)
[808]	141	unless $self->{'no_metadata'};
[721]	142
[808]	143	# Store URL for page as metadata - this can be used for an
	144	# altavista style search interface. The URL won't be valid
	145	# unless the file structure contains the domain name (i.e.
	146	# like when w3mir is used to download a website).
	147	my $web_url = "http://$file";
	148	$web_url =~ s/\\/\//g; # for windows
[1220]	149	$doc_obj->add_utf8_metadata($cursection, "URL", $web_url);
[721]	150
[808]	151	# remove header and footer
	152	if (!$self->{'keep_head'}) {
[1243]	153	$$textref =~ s/^.?<body[^>]>//is;
	154	$$textref =~ s/(<\/body[^>]>\|<\/html[^>]>)//isg;
[808]	155	}
[721]	156
[808]	157	# trap links
	158	if (!$self->{'nolinks'}) {
[721]	159
[808]	160	# usemap="./#index" not handled correctly => change to "#index"
[1243]	161	$$textref =~ s/(<img[^>]?usemap\s=\s\"?)([^\">\s]+)(\"?[^>]>)/
[808]	162	$self->replace_usemap_links($1, $2, $3)/isge;
[721]	163
[1312]	164	$$textref =~ s/(<(?:a\|area\|frame\|link)\s+[^>]?\s(?:href\|src)\s=\s\"?)([^\">\s]+)(\"?[^>]*>)/
[897]	165	$self->replace_href_links ($1, $2, $3, $base_dir, $file, $doc_obj, $cursection)/isge;
[721]	166	}
	167
[808]	168	# trap images
[1929]	169
[2695]	170	# allow spaces if inside quotes - jrm21
	171	$$textref =~ s/(<img[^>]?src\s=\s)(\"[^\"]+\"\|[^\s>]+)([^>]>)/
[897]	172	$self->replace_images ($1, $2, $3, $base_dir, $file, $doc_obj, $cursection)/isge;
[1244]	173
	174	# add text to document object
[1358]	175	$doc_obj->add_utf8_text($cursection, $$textref);
[1244]	176
	177	return 1;
[721]	178	}
	179
[1891]	180
	181
	182
[808]	183	sub replace_images {
	184	my $self = shift (@_);
[897]	185	my ($front, $link, $back, $base_dir,
	186	$file, $doc_obj, $section) = @_;
[2695]	187	# remove quotes from link at start and end if necessary
	188	if ($link=~/^\"/) {
	189	$link=~s/^\"//;$link=~s/\"$//;
	190	$front.='"';
	191	$back="\"$back";
	192	}
	193
[808]	194	$link =~ s/\n/ /g;
	195	my ($href, $hash_part, $rl) = $self->format_link ($link, $base_dir, $file);
[965]	196	return $front . $self->add_file ($href, $rl, $hash_part, $base_dir, $doc_obj, $section) . $back;
[721]	197	}
	198
[808]	199	sub replace_href_links {
[585]	200	my $self = shift (@_);
[897]	201	my ($front, $link, $back, $base_dir, $file, $doc_obj, $section) = @_;
[585]	202
[808]	203	# attempt to sort out targets - frames are not handled
	204	# well in this plugin and some cases will screw things
	205	# up - e.g. the _parent target (so we'll just remove
	206	# them all ;-)
	207	$front =~ s/(target=\"?)_top(\"?)/$1_gsdltop_$2/is;
	208	$back =~ s/(target=\"?)_top(\"?)/$1_gsdltop_$2/is;
	209	$front =~ s/target=\"?_parent\"?//is;
	210	$back =~ s/target=\"?_parent\"?//is;
[721]	211
[808]	212	return $front . $link . $back if $link =~ /^\#/s;
	213	$link =~ s/\n/ /g;
[721]	214
[808]	215	my ($href, $hash_part, $rl) = $self->format_link ($link, $base_dir, $file);
[1312]	216	# href may use '\'s where '/'s should be on Windows
	217	$href =~ s/\\/\//g;
[585]	218
[850]	219	my ($filename) = $href =~ /^(?:.?):(?:\/\/)?(.)/;
[897]	220
	221	##### leave all these links alone (they won't be picked up by intermediate
	222	##### pages). I think that's safest when dealing with frames, targets etc.
	223	##### (at least until I think of a better way to do it). Problems occur with
	224	##### mailto links from within small frames, the intermediate page is displayed
	225	##### within that frame and can't be seen. There is still potential for this to
	226	##### happen even with html pages - the solution seems to be to somehow tell
	227	##### the browser from the server side to display the page being sent (i.e.
	228	##### the intermediate page) in the top level window - I'm not sure if that's
	229	##### possible - the following line should probably be deleted if that can be done
	230	return $front . $link . $back if $href =~ /^(mailto\|news\|gopher\|nntp\|telnet\|javascript):/is;
	231
[1605]	232
[850]	233	if (($rl == 0) \|\| ($filename =~ /$self->{'process_exp'}/) \|\|
[808]	234	($href =~ /\/$/) \|\| ($href =~ /^(mailto\|news\|gopher\|nntp\|telnet\|javascript):/i)) {
[1010]	235	&ghtml::urlsafe ($href);
[897]	236	return $front . "_httpextlink_&rl=" . $rl . "&href=" . $href . $hash_part . $back;
[808]	237
	238	} else {
[1686]	239	# link is to some other type of file (eg image) so we'll
[808]	240	# need to associate that file
[965]	241	return $front . $self->add_file ($href, $rl, $hash_part, $base_dir, $doc_obj, $section) . $back;
[721]	242	}
[808]	243	}
[721]	244
[808]	245	sub add_file {
	246	my $self = shift (@_);
[965]	247	my ($href, $rl, $hash_part, $base_dir, $doc_obj, $section) = @_;
[808]	248	my ($newname);
[585]	249
[808]	250	my $filename = $href;
	251	$filename =~ s/^[^:]*:\/\///;
[1410]	252	$filename = &util::filename_cat($base_dir, $filename);
[1929]	253
[808]	254	my ($ext) = $filename =~ /(\.[^\.]*)$/;
[965]	255
	256	if ((!defined $ext) \|\| ($ext !~ /$self->{'assoc_files'}/)) {
	257	return "_httpextlink_&rl=" . $rl . "&href=" . $href . $hash_part;
	258	}
	259
[900]	260	if ($self->{'rename_assoc_files'}) {
	261	if (defined $self->{'aux_files'}->{$href}) {
	262	$newname = $self->{'aux_files'}->{$href}->{'dir_num'} . "/" .
	263	$self->{'aux_files'}->{$href}->{'file_num'} . $ext;
	264	} else {
	265	$newname = $self->{'dir_num'} . "/" . $self->{'file_num'} . $ext;
[965]	266	$self->{'aux_files'}->{$href} = {'dir_num' => $self->{'dir_num'}, 'file_num' => $self->{'file_num'}};
[900]	267	$self->inc_filecount ();
	268	}
	269	$doc_obj->associate_file($filename, $newname, undef, $section);
	270	return "_httpcollimg_/$newname";
	271
[585]	272	} else {
[900]	273	($newname) = $filename =~ /([^\/\\]*)$/;
	274	$doc_obj->associate_file($filename, $newname, undef, $section);
[1020]	275	return "_httpdocimg_/$newname";
[585]	276	}
[808]	277	}
[585]	278
[721]	279
[808]	280	sub format_link {
	281	my $self = shift (@_);
	282	my ($link, $base_dir, $file) = @_;
[585]	283
[808]	284	my ($before_hash, $hash_part) = $link =~ /^([^\#])(\#?.)$/;
[1929]	285
[808]	286	$hash_part = "" if !defined $hash_part;
	287	if (!defined $before_hash \|\| $before_hash !~ /[\w\.\/]/) {
[1424]	288	my $outhandle = $self->{'outhandle'};
	289	print $outhandle "HTMLPlug: ERROR - badly formatted tag ignored ($link)\n"
[808]	290	if $self->{'verbosity'};
	291	return ($link, "", 0);
[732]	292	}
[808]	293
	294	if ($before_hash =~ s/^((?:http\|ftp\|file):\/\/)//i) {
	295	my $type = $1;
[1929]	296
[808]	297	if ($link =~ /^(http\|ftp):/i) {
	298	# Turn url (using /) into file name (possibly using \ on windows)
	299	my @http_dir_split = split('/', $before_hash);
	300	$before_hash = &util::filename_cat(@http_dir_split);
[585]	301	}
	302
[808]	303	$before_hash = $self->eval_dir_dots($before_hash);
	304
	305	my $linkfilename = &util::filename_cat ($base_dir, $before_hash);
[617]	306
[808]	307	my $rl = 0;
	308	$rl = 1 if (-e $linkfilename);
[585]	309
[808]	310	# make sure there's a slash on the end if it's a directory
	311	if ($before_hash !~ /\/$/) {
	312	$before_hash .= "/" if (-d $linkfilename);
	313	}
[585]	314
[808]	315	return ($type . $before_hash, $hash_part, $rl);
[721]	316
[808]	317	} elsif ($link !~ /^(mailto\|news\|gopher\|nntp\|telnet\|javascript):/i) {
[1929]	318	if ($before_hash =~ s/^\/// \|\| $before_hash =~ /\\/) {
[721]	319
[2342]	320	# the first directory will be the domain name if file_is_url
[808]	321	# to generate archives, otherwise we'll assume all files are
	322	# from the same site and base_dir is the root
[1929]	323	# This is not called in Windows
[2342]	324	if ($self->{'file_is_url'}) {
[808]	325	my @dirs = split /[\/\\]/, $file;
	326	my $domname = shift (@dirs);
	327	$before_hash = &util::filename_cat($domname, $before_hash);
	328	$before_hash =~ s/\\/\//g; # for windows
	329	}
[1410]	330	else
	331	{
	332	# see if link shares directory with source document
	333	# => turn into relative link if this is so!
[1929]	334	my $before_hash_fix = "";
	335
	336	# filename_cat appends / or \ to the beginning of the
	337	# file pathname but in Windows we don't want to do that
	338	if ($ENV{'GSDLOS'} =~ /^windows/i) {
	339	$before_hash_fix = $before_hash;
	340	}
	341	else {
	342	$before_hash_fix = &util::filename_cat("",$before_hash);
	343	}
	344
	345	my $base_dir_win_match = $base_dir;
	346	$base_dir_win_match =~ s/\\/\\\\/g;
	347
	348	$before_hash_fix =~ s/^$base_dir_win_match(\\\|\/)//;
[1410]	349	$before_hash = $before_hash_fix;
[721]	350
[1410]	351	}
	352
[808]	353	} else {
	354	# Turn relative file path into full path
	355	my $dirname = &File::Basename::dirname($file);
	356	$before_hash = &util::filename_cat($dirname, $before_hash);
	357	$before_hash = $self->eval_dir_dots($before_hash);
	358	}
[721]	359
[1410]	360	my $linkfilename = &util::filename_cat ($base_dir, $before_hash);
	361
[808]	362	# make sure there's a slash on the end if it's a directory
	363	if ($before_hash !~ /\/$/) {
	364	$before_hash .= "/" if (-d $linkfilename);
	365	}
[1929]	366
[808]	367	return ("http://" . $before_hash, $hash_part, 1);
[721]	368
[808]	369	} else {
	370	# mailto, news, nntp, telnet, javascript or gopher link
	371	return ($before_hash, "", 0);
	372	}
	373	}
[1605]	374
[1602]	375	sub extract_first_NNNN_characters {
	376	my $self = shift (@_);
	377	my ($textref, $doc_obj, $thissection) = @_;
	378
	379	foreach my $size (split /,/, $self->{'first'}) {
	380	my $tmptext = $$textref;
	381	$tmptext =~ s/.<body[^>]>//i;
	382	$tmptext =~ s/$self->{'title_sub'}// if (defined $self->{'title_sub'});
	383	$tmptext =~ s/<[^>]*>/ /g;
	384	$tmptext =~ s/ / /g;
	385	$tmptext =~ s/^\s+//;
	386	$tmptext =~ s/\s+$//;
	387	$tmptext =~ s/\s+/ /gs;
	388	$tmptext = substr ($tmptext, 0, $size);
	389	$tmptext =~ s/\s\S*$/…/;
	390	$doc_obj->add_utf8_metadata ($thissection, "First$size", $tmptext);
	391	}
	392	}
[721]	393
[808]	394	sub extract_metadata {
	395	my $self = shift (@_);
	396	my ($textref, $metadata, $doc_obj, $section) = @_;
[1605]	397	my $outhandle = $self->{'outhandle'};
[585]	398
[1602]	399	# if we don't want metadata, we may as well not be here ...
[1400]	400	return if (!defined $self->{'metadata_fields'});
	401
[1605]	402	# hunt for an author look in the metadata elements:
[1602]	403	if (defined $self->{'hunt_creator_metadata'}) {
[1605]	404	for my $name (split /,/, "AUTHOR,AUTHOR.EMAIL,CREATOR,DC.CREATOR,DC.CREATOR.CORPORATENAME") {
[1602]	405	if ($$textref =~ /<meta(\s?)(?:name\|http-equiv)\s=\s\"?$name\"?([^>])/is) {
	406	my $content = $1 . $2;
	407	if ($content =~ /content\s=\s\"?(.*)\"?/is) {
	408	if (defined $1) {
	409	my $value = $1;
	410	$value =~ s/\"$//;
	411	$value =~ s/\s+/ /gs;
	412	$doc_obj->add_utf8_metadata($section, "Creator", $value);
[1605]	413	print $outhandle " extracted Creator metadata \"$value\"\n"
[1844]	414	if ($self->{'verbosity'} > 2);
[1605]	415	next;
[1602]	416	}
	417	}
	418	}
	419	}
	420	}
	421
[850]	422	foreach my $field (split /,/, $self->{'metadata_fields'}) {
[1230]	423
[808]	424	# don't need to extract field if it was passed in from a previous
	425	# (recursive) plugin
	426	next if defined $metadata->{$field};
[721]	427
[808]	428	# see if there's a <meta> tag for this field
[1448]	429	if ($$textref =~ /<meta(\s?)(?:name\|http-equiv)\s=\s\"?$field\"?([^>])/is) {
[808]	430	my $content = $1 . $2;
[1448]	431	if ($content =~ /content\s=\s\"?(.*)\"?/is) {
[808]	432	if (defined $1) {
	433	my $value = $1;
[1448]	434	$value =~ s/\"$//;
[808]	435	$value =~ s/\s+/ /gs;
[1602]	436	$value =~ s/\".*//gs;
[1220]	437	$doc_obj->add_utf8_metadata($section, $field, $value);
[1605]	438	print $outhandle " extracted \"$field\" metadata \"$value\"\n"
[1844]	439	if ($self->{'verbosity'} > 2);
[808]	440	next;
	441	}
	442	}
	443	}
	444
[1605]	445	# TITLE: extract the document title
	446
[808]	447	if ($field =~ /^title$/i) {
[1605]	448
[808]	449	# see if there's a <title> tag
	450	if ($$textref =~ /<title[^>]>([^<])<\/title[^>]*>/is) {
	451	if (defined $1) {
	452	my $title = $1;
	453	if ($title =~ /\w/) {
[1653]	454	$title =~ s/<[^>]*>/ /g;
	455	$title =~ s/ / /g;
[808]	456	$title =~ s/\s+/ /gs;
[1230]	457	$title =~ s/^\s+//;
	458	$title =~ s/\s+$//;
[1220]	459	$doc_obj->add_utf8_metadata ($section, $field, $title);
[1605]	460	print $outhandle " extracted \"$field\" metadata \"$title\"\n"
[1844]	461	if ($self->{'verbosity'} > 2);
[808]	462	next;
	463	}
	464	}
	465	}
	466
	467	# if no title use first 100 characters
	468	my $tmptext = $$textref;
[2453]	469	$tmptext =~ s/<\/([^>]+)><\1>//g; # (eg) </b><b> - no space
[1602]	470	$tmptext =~ s/<[^>]*>/ /g;
[1605]	471	$tmptext =~ s/ / /g;
[2453]	472	$tmptext =~ s/^\s+//s;
[1230]	473	$tmptext =~ s/\s+$//;
[1190]	474	$tmptext =~ s/\s+/ /gs;
[2453]	475	$tmptext =~ s/$self->{'title_sub'}// if (defined $self->{'title_sub'});
[1602]	476	$tmptext = substr ($tmptext, 0, 100);
[1190]	477	$tmptext =~ s/\s\S*$/.../;
[1220]	478	$doc_obj->add_utf8_metadata ($section, $field, $tmptext);
[1653]	479	print $outhandle " extracted \"$field\" metadata \"$tmptext\"\n"
[1844]	480	if ($self->{'verbosity'} > 2);
[1230]	481	next;
[1190]	482	}
[1230]	483
[1605]	484
[1602]	485	# tag: extract the text between the first <H1> and </H1> tags
	486	if ($field =~ /^tag[a-z0-9]+$/i) {
[1605]	487
[1602]	488	my $tag = $field;
	489	$tag =~ s/^tag//i;
	490	my $tmptext = $$textref;
	491	$tmptext =~ s/\s+/ /gs;
[1605]	492	if ($tmptext =~ /<$tag[^>]*>/i) {
	493	foreach my $word ($tmptext =~ m/<$tag[^>]>(.?)<\/$tag[^>]*>/g) {
	494	$word =~ s/ / /g;
	495	$word =~ s/<[^>]*>/ /g;
	496	$word =~ s/^\s+//;
	497	$word =~ s/\s+$//;
	498	$word =~ s/\s+/ /gs;
	499	if ($word ne "") {
	500	$doc_obj->add_utf8_metadata ($section, $tag, $word);
	501	print $outhandle " extracted \"$tag\" metadata \"$word\"\n"
[1844]	502	if ($self->{'verbosity'} > 2);
[1605]	503	}
	504	}
[1602]	505	}
	506	next;
	507	}
[808]	508	}
[585]	509	}
	510
[1190]	511
[808]	512	# evaluate any "../" to next directory up
	513	# evaluate any "./" as here
	514	sub eval_dir_dots {
	515	my $self = shift (@_);
	516	my ($filename) = @_;
[585]	517
[721]	518	my $dirsep_os = &util::get_os_dirsep();
	519	my @dirsep = split(/$dirsep_os/,$filename);
	520
	521	my @eval_dirs = ();
[850]	522	foreach my $d (@dirsep) {
[808]	523	if ($d eq "..") {
[721]	524	pop(@eval_dirs);
[808]	525
	526	} elsif ($d eq ".") {
[721]	527	# do nothing!
[808]	528
	529	} else {
[721]	530	push(@eval_dirs,$d);
	531	}
[585]	532	}
	533
[721]	534	return &util::filename_cat(@eval_dirs);
	535	}
	536
[808]	537	sub replace_usemap_links {
	538	my $self = shift (@_);
[721]	539	my ($front, $link, $back) = @_;
	540
	541	$link =~ s/^\.\///;
[808]	542	return $front . $link . $back;
[721]	543	}
	544
[808]	545	sub inc_filecount {
	546	my $self = shift (@_);
[721]	547
[808]	548	if ($self->{'file_num'} == 1000) {
	549	$self->{'dir_num'} ++;
	550	$self->{'file_num'} = 0;
	551	} else {
	552	$self->{'file_num'} ++;
	553	}
	554	}
[721]	555
[1891]	556
	557	# Extend the BasPlug read_file so that strings like é are
	558	# converted to UTF8 internally.
	559	#
	560	# We don't convert < or > or & or " in case
	561	# they interfere with the GML files
	562
	563	sub read_file {
	564	my ($self, $filename, $encoding, $textref) = @_;
	565
	566	&BasPlug::read_file($self, $filename, $encoding, $textref);
[2364]	567
	568	# turn \ into \\ so that the rest of greenstone doesn't think there
	569	# is an escape code following.
	570	$$textref =~ s/\\/\\\\/go;
	571
[1891]	572	# Convert things like é to their UTF8 equivalents
	573	$$textref =~ s/&(lt\|gt\|amp\|quot);/&z$1;/go;
	574	$$textref =~ s/&([^;]+);/&unicode::ascii2utf8(\&ghtml::getcharequiv($1,1))/gseo;
	575	$$textref =~ s/&z(lt\|gt\|amp\|quot);/&$1;/go;
	576	}
	577
[585]	578	1;

Note: See TracBrowser for help on using the repository browser.

Download in other formats: