1 | use strict;
|
---|
2 | use util;
|
---|
3 |
|
---|
4 |
|
---|
5 | sub readin_html
|
---|
6 | {
|
---|
7 | my ($html_fname) = @_;
|
---|
8 |
|
---|
9 | open(HIN,"<$html_fname")
|
---|
10 | || die "Unable to open $html_fname: $!\n";
|
---|
11 |
|
---|
12 | my $html_text;
|
---|
13 | my $line;
|
---|
14 | while (defined ($line=<HIN>)) {
|
---|
15 | $html_text .= $line;
|
---|
16 | }
|
---|
17 | close(HIN);
|
---|
18 |
|
---|
19 | return $html_text;
|
---|
20 | }
|
---|
21 |
|
---|
22 | sub stripout_anchortags
|
---|
23 | {
|
---|
24 | my ($html_text) = @_;
|
---|
25 |
|
---|
26 | my @anchor_tags = ($html_text =~ m/(<a\s+.*?>)+/gs);
|
---|
27 |
|
---|
28 | return @anchor_tags;
|
---|
29 | }
|
---|
30 |
|
---|
31 |
|
---|
32 | sub print_tags
|
---|
33 | {
|
---|
34 | my (@tags) = @_;
|
---|
35 |
|
---|
36 | my $a;
|
---|
37 | foreach $a ( @tags) {
|
---|
38 | print "$a\n";
|
---|
39 | }
|
---|
40 | }
|
---|
41 |
|
---|
42 | sub filter_tags
|
---|
43 | {
|
---|
44 | my ($filter_text,@tags) = @_;
|
---|
45 |
|
---|
46 | my @filtered_tags = ();
|
---|
47 |
|
---|
48 | my $t;
|
---|
49 | foreach $t (@tags) {
|
---|
50 | if ($t =~ m/$filter_text/x) {
|
---|
51 | push(@filtered_tags,$t);
|
---|
52 | }
|
---|
53 | }
|
---|
54 |
|
---|
55 | return @filtered_tags;
|
---|
56 | }
|
---|
57 |
|
---|
58 | sub extract_urls {
|
---|
59 | my (@tags) = @_;
|
---|
60 |
|
---|
61 | my @urls = ();
|
---|
62 |
|
---|
63 | my $t;
|
---|
64 | foreach $t (@tags) {
|
---|
65 | if ($t =~ m/href=([^ ]+)/i) {
|
---|
66 | my $url = $1;
|
---|
67 | $url =~ s/&/&/g;
|
---|
68 | push(@urls,$url);
|
---|
69 | }
|
---|
70 | }
|
---|
71 |
|
---|
72 | return @urls;
|
---|
73 | }
|
---|
74 |
|
---|
75 | sub get_gi_page
|
---|
76 | {
|
---|
77 | my ($cgi_base,$cgi_call,$downloadto_fname) = @_;
|
---|
78 |
|
---|
79 | my $full_url = "$cgi_base$cgi_call";
|
---|
80 |
|
---|
81 | if ((!-e $downloadto_fname) || (-z $downloadto_fname)) {
|
---|
82 | my $cmd = "wget -nv -T 10 -nc -U \"Mozilla\" -O \"$downloadto_fname\" \"$full_url\"";
|
---|
83 | ## print STDERR "*** wget cmd:\n $cmd\n";
|
---|
84 |
|
---|
85 | `$cmd`;
|
---|
86 | }
|
---|
87 |
|
---|
88 | if (-z $downloadto_fname) {
|
---|
89 | print STDERR "Warning: downloaded file 0 bytes!\n";
|
---|
90 | }
|
---|
91 | }
|
---|
92 |
|
---|
93 |
|
---|
94 | sub parse_gi_search_page
|
---|
95 | {
|
---|
96 | my ($ga_base,$search_term_dir,$downloaded_fname,$currpage_url) = @_;
|
---|
97 |
|
---|
98 | my $nextpage_url = undef;
|
---|
99 |
|
---|
100 | my @imgref_urls = ();
|
---|
101 |
|
---|
102 | my $downloaded_text = readin_html($downloaded_fname);
|
---|
103 | if (defined $downloaded_text) {
|
---|
104 | my @anchor_tags = stripout_anchortags($downloaded_text);
|
---|
105 |
|
---|
106 | my @thumbimg_tags = filter_tags("imgres\\?",@anchor_tags);
|
---|
107 | my @nextpage_tags = filter_tags("images\\?.*?start=\\d+",@anchor_tags);
|
---|
108 |
|
---|
109 | my @thumbimg_urls = extract_urls(@thumbimg_tags);
|
---|
110 | my @nextpage_urls = extract_urls(@nextpage_tags);
|
---|
111 |
|
---|
112 | my $curr_start = 0;
|
---|
113 | if ($currpage_url =~ m/start=(\d+)/) {
|
---|
114 | $curr_start = $1;
|
---|
115 | }
|
---|
116 |
|
---|
117 | my $pot_url;
|
---|
118 | foreach $pot_url (@nextpage_urls) {
|
---|
119 |
|
---|
120 | my ($next_start) = ($pot_url =~ m/start=(\d+)/);
|
---|
121 | if ($next_start>$curr_start) {
|
---|
122 | $nextpage_url = $pot_url;
|
---|
123 | last;
|
---|
124 | }
|
---|
125 | }
|
---|
126 |
|
---|
127 | # print "-" x 40, "\n";
|
---|
128 | my $c = 1;
|
---|
129 | my $p = 1;
|
---|
130 |
|
---|
131 | foreach my $tvu (@thumbimg_urls) {
|
---|
132 | my ($img_url) = ($tvu =~ m/imgurl=([^&]*)/);
|
---|
133 | $img_url =~ s/%25/%/g;
|
---|
134 |
|
---|
135 | my ($imgref_url) = ($tvu =~ m/imgrefurl=([^&]*)/);
|
---|
136 | ## print STDERR "****imgref_url = $imgref_url\n";
|
---|
137 | $imgref_url =~ s/%25/%/g;
|
---|
138 |
|
---|
139 | my ($img_ext) = ($img_url =~ m/\.(\w+)$/);
|
---|
140 | $img_ext = lc($img_ext);
|
---|
141 |
|
---|
142 | # remove http:// if there, so later we can explicitly add it in
|
---|
143 | $img_url =~ s/^http:\/\///;
|
---|
144 |
|
---|
145 | print "Downloading image url http://$img_url\n";
|
---|
146 | my $output_fname = "$search_term_dir/img_$c.$img_ext";
|
---|
147 |
|
---|
148 | get_gi_page("http://",$img_url,$output_fname);
|
---|
149 |
|
---|
150 | if (-s $output_fname == 0) {
|
---|
151 | unlink $output_fname;
|
---|
152 | }
|
---|
153 | else {
|
---|
154 | # need to shift the $? exit code returned by system() by 8 bits and
|
---|
155 | # then convert it to a signed value to work out whether it is indeed > 0
|
---|
156 | my $status = system("\"".&util::get_perl_exec()."\" -S gs-magick.pl identify \"$output_fname\"");
|
---|
157 | $status >>= 8;
|
---|
158 | $status = (($status & 0x80) ? -(0x100 - ($status & 0xFF)) : $status);
|
---|
159 |
|
---|
160 | if($status > 0 ) {
|
---|
161 | print STDERR "**** NOT JPEG: output_fname \n";
|
---|
162 | unlink $output_fname;
|
---|
163 | }
|
---|
164 | else {
|
---|
165 | my $command = "\"".&util::get_perl_exec()."\" -S gs-magick.pl identify \"$output_fname\" 2>&1";
|
---|
166 | my $result = `$command`;
|
---|
167 |
|
---|
168 | my $type = 'unknown';
|
---|
169 | my $width = 'unknown';
|
---|
170 | my $height = 'unknown';
|
---|
171 |
|
---|
172 | my $image_safe = quotemeta $output_fname;
|
---|
173 | if ($result =~ /^$image_safe (\w+) (\d+)x(\d+)/) {
|
---|
174 | $type = $1;
|
---|
175 | $width = $2;
|
---|
176 | $height = $3;
|
---|
177 | }
|
---|
178 |
|
---|
179 | my $imagick_cmd = "\"".&util::get_perl_exec()."\" -S gs-magick.pl";
|
---|
180 |
|
---|
181 | if (($width ne "unknown") && ($height ne "unknown")) {
|
---|
182 | if (($width>200) || ($height>200)) {
|
---|
183 | `$imagick_cmd convert \"$output_fname\" -resize 200x200 /tmp/x.jpg`;
|
---|
184 | `/bin/mv /tmp/x.jpg \"$output_fname\"`;
|
---|
185 | }
|
---|
186 | }
|
---|
187 | $c++;
|
---|
188 | }
|
---|
189 | }
|
---|
190 |
|
---|
191 | push(@imgref_urls,$imgref_url);
|
---|
192 |
|
---|
193 | last if ($c==3); # Only take first 2
|
---|
194 |
|
---|
195 | $p++;
|
---|
196 |
|
---|
197 | if ($p==20) {
|
---|
198 | print STDERR "*** Unable to get enough images after 20 passes\n";
|
---|
199 | last;
|
---|
200 | }
|
---|
201 |
|
---|
202 |
|
---|
203 | }
|
---|
204 |
|
---|
205 | if (defined $nextpage_url) {
|
---|
206 | print "Next page URL:\n";
|
---|
207 | print_tags($nextpage_url);
|
---|
208 | }
|
---|
209 | # print "-" x 40, "\n";
|
---|
210 | }
|
---|
211 |
|
---|
212 | return ($nextpage_url, \@imgref_urls);
|
---|
213 | }
|
---|
214 |
|
---|
215 | sub make_search_term_safe
|
---|
216 | {
|
---|
217 | my ($search_terms) = @_;
|
---|
218 |
|
---|
219 | my $search_term_safe = join("+",@$search_terms);
|
---|
220 | $search_term_safe =~ s/\"/%22/g;
|
---|
221 | $search_term_safe =~ s/ /+/g;
|
---|
222 |
|
---|
223 | return $search_term_safe;
|
---|
224 | }
|
---|
225 |
|
---|
226 | sub gi_query_url
|
---|
227 | {
|
---|
228 | my ($search_term) = @_;
|
---|
229 |
|
---|
230 | my $search_term_safe = make_search_term_safe($search_term);
|
---|
231 |
|
---|
232 | my $nextpage_url
|
---|
233 | = "/images?as_filetype=jpg&imgc=color\&ie=UTF-8\&oe=UTF-8\&hl=en\&btnG=Google+Search";
|
---|
234 | $nextpage_url .= "\&q=$search_term_safe";
|
---|
235 |
|
---|
236 | return $nextpage_url;
|
---|
237 | }
|
---|
238 |
|
---|
239 | sub gi_url_base
|
---|
240 | {
|
---|
241 | return "http://images.google.com";
|
---|
242 | }
|
---|
243 |
|
---|
244 | sub giget
|
---|
245 | {
|
---|
246 | my ($search_terms,$output_dir) = @_;
|
---|
247 | my $imgref_urls = [];
|
---|
248 |
|
---|
249 | if (!-e $output_dir) {
|
---|
250 | mkdir($output_dir);
|
---|
251 |
|
---|
252 | }
|
---|
253 |
|
---|
254 | print STDERR "Searching Google Images for: ", join(", ",@$search_terms), "\n";
|
---|
255 |
|
---|
256 | my $gi_base = gi_url_base();
|
---|
257 | my $nextpage_url = gi_query_url($search_terms);
|
---|
258 |
|
---|
259 | my $respage_fname = "$output_dir/respage1.html";
|
---|
260 | get_gi_page($gi_base,$nextpage_url,$respage_fname);
|
---|
261 |
|
---|
262 | ($nextpage_url, $imgref_urls)
|
---|
263 | = parse_gi_search_page($gi_base,$output_dir,
|
---|
264 | $respage_fname,$nextpage_url);
|
---|
265 | # else {
|
---|
266 | # print STDERR " Images already mirrored\n";
|
---|
267 | # }
|
---|
268 |
|
---|
269 | print STDERR "-" x 40, "\n";
|
---|
270 |
|
---|
271 | return $imgref_urls;
|
---|
272 | }
|
---|
273 |
|
---|
274 |
|
---|
275 | 1;
|
---|