5 * @version $Id: mo.php 1157 2015-11-20 04:30:11Z dd32 $ |
5 * @version $Id: mo.php 1157 2015-11-20 04:30:11Z dd32 $ |
6 * @package pomo |
6 * @package pomo |
7 * @subpackage mo |
7 * @subpackage mo |
8 */ |
8 */ |
9 |
9 |
10 require_once dirname(__FILE__) . '/translations.php'; |
10 require_once dirname( __FILE__ ) . '/translations.php'; |
11 require_once dirname(__FILE__) . '/streams.php'; |
11 require_once dirname( __FILE__ ) . '/streams.php'; |
12 |
12 |
13 if ( ! class_exists( 'MO', false ) ): |
13 if ( ! class_exists( 'MO', false ) ) : |
14 class MO extends Gettext_Translations { |
14 class MO extends Gettext_Translations { |
15 |
15 |
16 var $_nplurals = 2; |
16 var $_nplurals = 2; |
17 |
17 |
18 /** |
18 /** |
19 * Loaded MO file. |
19 * Loaded MO file. |
20 * |
20 * |
21 * @var string |
21 * @var string |
22 */ |
22 */ |
23 private $filename = ''; |
23 private $filename = ''; |
24 |
24 |
25 /** |
25 /** |
26 * Returns the loaded MO file. |
26 * Returns the loaded MO file. |
27 * |
27 * |
28 * @return string The loaded MO file. |
28 * @return string The loaded MO file. |
29 */ |
29 */ |
30 public function get_filename() { |
30 public function get_filename() { |
31 return $this->filename; |
31 return $this->filename; |
|
32 } |
|
33 |
|
34 /** |
|
35 * Fills up with the entries from MO file $filename |
|
36 * |
|
37 * @param string $filename MO file to load |
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38 * @return bool True if the import from file was successful, otherwise false. |
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39 */ |
|
40 function import_from_file( $filename ) { |
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41 $reader = new POMO_FileReader( $filename ); |
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42 |
|
43 if ( ! $reader->is_resource() ) { |
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44 return false; |
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45 } |
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46 |
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47 $this->filename = (string) $filename; |
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48 |
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49 return $this->import_from_reader( $reader ); |
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50 } |
|
51 |
|
52 /** |
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53 * @param string $filename |
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54 * @return bool |
|
55 */ |
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56 function export_to_file( $filename ) { |
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57 $fh = fopen( $filename, 'wb' ); |
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58 if ( ! $fh ) { |
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59 return false; |
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60 } |
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61 $res = $this->export_to_file_handle( $fh ); |
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62 fclose( $fh ); |
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63 return $res; |
|
64 } |
|
65 |
|
66 /** |
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67 * @return string|false |
|
68 */ |
|
69 function export() { |
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70 $tmp_fh = fopen( 'php://temp', 'r+' ); |
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71 if ( ! $tmp_fh ) { |
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72 return false; |
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73 } |
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74 $this->export_to_file_handle( $tmp_fh ); |
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75 rewind( $tmp_fh ); |
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76 return stream_get_contents( $tmp_fh ); |
|
77 } |
|
78 |
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79 /** |
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80 * @param Translation_Entry $entry |
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81 * @return bool |
|
82 */ |
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83 function is_entry_good_for_export( $entry ) { |
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84 if ( empty( $entry->translations ) ) { |
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85 return false; |
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86 } |
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87 |
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88 if ( ! array_filter( $entry->translations ) ) { |
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89 return false; |
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90 } |
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91 |
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92 return true; |
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93 } |
|
94 |
|
95 /** |
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96 * @param resource $fh |
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97 * @return true |
|
98 */ |
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99 function export_to_file_handle( $fh ) { |
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100 $entries = array_filter( $this->entries, array( $this, 'is_entry_good_for_export' ) ); |
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101 ksort( $entries ); |
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102 $magic = 0x950412de; |
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103 $revision = 0; |
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104 $total = count( $entries ) + 1; // all the headers are one entry |
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105 $originals_lenghts_addr = 28; |
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106 $translations_lenghts_addr = $originals_lenghts_addr + 8 * $total; |
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107 $size_of_hash = 0; |
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108 $hash_addr = $translations_lenghts_addr + 8 * $total; |
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109 $current_addr = $hash_addr; |
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110 fwrite( |
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111 $fh, |
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112 pack( |
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113 'V*', |
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114 $magic, |
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115 $revision, |
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116 $total, |
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117 $originals_lenghts_addr, |
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118 $translations_lenghts_addr, |
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119 $size_of_hash, |
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120 $hash_addr |
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121 ) |
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122 ); |
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123 fseek( $fh, $originals_lenghts_addr ); |
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124 |
|
125 // headers' msgid is an empty string |
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126 fwrite( $fh, pack( 'VV', 0, $current_addr ) ); |
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127 $current_addr++; |
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128 $originals_table = "\0"; |
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129 |
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130 $reader = new POMO_Reader(); |
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131 |
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132 foreach ( $entries as $entry ) { |
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133 $originals_table .= $this->export_original( $entry ) . "\0"; |
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134 $length = $reader->strlen( $this->export_original( $entry ) ); |
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135 fwrite( $fh, pack( 'VV', $length, $current_addr ) ); |
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136 $current_addr += $length + 1; // account for the NULL byte after |
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137 } |
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138 |
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139 $exported_headers = $this->export_headers(); |
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140 fwrite( $fh, pack( 'VV', $reader->strlen( $exported_headers ), $current_addr ) ); |
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141 $current_addr += strlen( $exported_headers ) + 1; |
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142 $translations_table = $exported_headers . "\0"; |
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143 |
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144 foreach ( $entries as $entry ) { |
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145 $translations_table .= $this->export_translations( $entry ) . "\0"; |
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146 $length = $reader->strlen( $this->export_translations( $entry ) ); |
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147 fwrite( $fh, pack( 'VV', $length, $current_addr ) ); |
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148 $current_addr += $length + 1; |
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149 } |
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150 |
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151 fwrite( $fh, $originals_table ); |
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152 fwrite( $fh, $translations_table ); |
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153 return true; |
|
154 } |
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155 |
|
156 /** |
|
157 * @param Translation_Entry $entry |
|
158 * @return string |
|
159 */ |
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160 function export_original( $entry ) { |
|
161 //TODO: warnings for control characters |
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162 $exported = $entry->singular; |
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163 if ( $entry->is_plural ) { |
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164 $exported .= "\0" . $entry->plural; |
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165 } |
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166 if ( $entry->context ) { |
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167 $exported = $entry->context . "\4" . $exported; |
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168 } |
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169 return $exported; |
|
170 } |
|
171 |
|
172 /** |
|
173 * @param Translation_Entry $entry |
|
174 * @return string |
|
175 */ |
|
176 function export_translations( $entry ) { |
|
177 //TODO: warnings for control characters |
|
178 return $entry->is_plural ? implode( "\0", $entry->translations ) : $entry->translations[0]; |
|
179 } |
|
180 |
|
181 /** |
|
182 * @return string |
|
183 */ |
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184 function export_headers() { |
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185 $exported = ''; |
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186 foreach ( $this->headers as $header => $value ) { |
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187 $exported .= "$header: $value\n"; |
|
188 } |
|
189 return $exported; |
|
190 } |
|
191 |
|
192 /** |
|
193 * @param int $magic |
|
194 * @return string|false |
|
195 */ |
|
196 function get_byteorder( $magic ) { |
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197 // The magic is 0x950412de |
|
198 |
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199 // bug in PHP 5.0.2, see https://savannah.nongnu.org/bugs/?func=detailitem&item_id=10565 |
|
200 $magic_little = (int) - 1794895138; |
|
201 $magic_little_64 = (int) 2500072158; |
|
202 // 0xde120495 |
|
203 $magic_big = ( (int) - 569244523 ) & 0xFFFFFFFF; |
|
204 if ( $magic_little == $magic || $magic_little_64 == $magic ) { |
|
205 return 'little'; |
|
206 } elseif ( $magic_big == $magic ) { |
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207 return 'big'; |
|
208 } else { |
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209 return false; |
|
210 } |
|
211 } |
|
212 |
|
213 /** |
|
214 * @param POMO_FileReader $reader |
|
215 * @return bool True if the import was successful, otherwise false. |
|
216 */ |
|
217 function import_from_reader( $reader ) { |
|
218 $endian_string = MO::get_byteorder( $reader->readint32() ); |
|
219 if ( false === $endian_string ) { |
|
220 return false; |
|
221 } |
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222 $reader->setEndian( $endian_string ); |
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223 |
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224 $endian = ( 'big' == $endian_string ) ? 'N' : 'V'; |
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225 |
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226 $header = $reader->read( 24 ); |
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227 if ( $reader->strlen( $header ) != 24 ) { |
|
228 return false; |
|
229 } |
|
230 |
|
231 // parse header |
|
232 $header = unpack( "{$endian}revision/{$endian}total/{$endian}originals_lenghts_addr/{$endian}translations_lenghts_addr/{$endian}hash_length/{$endian}hash_addr", $header ); |
|
233 if ( ! is_array( $header ) ) { |
|
234 return false; |
|
235 } |
|
236 |
|
237 // support revision 0 of MO format specs, only |
|
238 if ( $header['revision'] != 0 ) { |
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239 return false; |
|
240 } |
|
241 |
|
242 // seek to data blocks |
|
243 $reader->seekto( $header['originals_lenghts_addr'] ); |
|
244 |
|
245 // read originals' indices |
|
246 $originals_lengths_length = $header['translations_lenghts_addr'] - $header['originals_lenghts_addr']; |
|
247 if ( $originals_lengths_length != $header['total'] * 8 ) { |
|
248 return false; |
|
249 } |
|
250 |
|
251 $originals = $reader->read( $originals_lengths_length ); |
|
252 if ( $reader->strlen( $originals ) != $originals_lengths_length ) { |
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253 return false; |
|
254 } |
|
255 |
|
256 // read translations' indices |
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257 $translations_lenghts_length = $header['hash_addr'] - $header['translations_lenghts_addr']; |
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258 if ( $translations_lenghts_length != $header['total'] * 8 ) { |
|
259 return false; |
|
260 } |
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261 |
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262 $translations = $reader->read( $translations_lenghts_length ); |
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263 if ( $reader->strlen( $translations ) != $translations_lenghts_length ) { |
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264 return false; |
|
265 } |
|
266 |
|
267 // transform raw data into set of indices |
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268 $originals = $reader->str_split( $originals, 8 ); |
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269 $translations = $reader->str_split( $translations, 8 ); |
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270 |
|
271 // skip hash table |
|
272 $strings_addr = $header['hash_addr'] + $header['hash_length'] * 4; |
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273 |
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274 $reader->seekto( $strings_addr ); |
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275 |
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276 $strings = $reader->read_all(); |
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277 $reader->close(); |
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278 |
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279 for ( $i = 0; $i < $header['total']; $i++ ) { |
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280 $o = unpack( "{$endian}length/{$endian}pos", $originals[ $i ] ); |
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281 $t = unpack( "{$endian}length/{$endian}pos", $translations[ $i ] ); |
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282 if ( ! $o || ! $t ) { |
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283 return false; |
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284 } |
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285 |
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286 // adjust offset due to reading strings to separate space before |
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287 $o['pos'] -= $strings_addr; |
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288 $t['pos'] -= $strings_addr; |
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289 |
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290 $original = $reader->substr( $strings, $o['pos'], $o['length'] ); |
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291 $translation = $reader->substr( $strings, $t['pos'], $t['length'] ); |
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292 |
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293 if ( '' === $original ) { |
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294 $this->set_headers( $this->make_headers( $translation ) ); |
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295 } else { |
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296 $entry = &$this->make_entry( $original, $translation ); |
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297 $this->entries[ $entry->key() ] = &$entry; |
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298 } |
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299 } |
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300 return true; |
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301 } |
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302 |
|
303 /** |
|
304 * Build a Translation_Entry from original string and translation strings, |
|
305 * found in a MO file |
|
306 * |
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307 * @static |
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308 * @param string $original original string to translate from MO file. Might contain |
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309 * 0x04 as context separator or 0x00 as singular/plural separator |
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310 * @param string $translation translation string from MO file. Might contain |
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311 * 0x00 as a plural translations separator |
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312 * @return Translation_Entry Entry instance. |
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313 */ |
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314 function &make_entry( $original, $translation ) { |
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315 $entry = new Translation_Entry(); |
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316 // Look for context, separated by \4. |
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317 $parts = explode( "\4", $original ); |
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318 if ( isset( $parts[1] ) ) { |
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319 $original = $parts[1]; |
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320 $entry->context = $parts[0]; |
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321 } |
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322 // look for plural original |
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323 $parts = explode( "\0", $original ); |
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324 $entry->singular = $parts[0]; |
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325 if ( isset( $parts[1] ) ) { |
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326 $entry->is_plural = true; |
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327 $entry->plural = $parts[1]; |
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328 } |
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329 // plural translations are also separated by \0 |
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330 $entry->translations = explode( "\0", $translation ); |
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331 return $entry; |
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332 } |
|
333 |
|
334 /** |
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335 * @param int $count |
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336 * @return string |
|
337 */ |
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338 function select_plural_form( $count ) { |
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339 return $this->gettext_select_plural_form( $count ); |
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340 } |
|
341 |
|
342 /** |
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343 * @return int |
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344 */ |
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345 function get_plural_forms_count() { |
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346 return $this->_nplurals; |
|
347 } |
32 } |
348 } |
33 |
|
34 /** |
|
35 * Fills up with the entries from MO file $filename |
|
36 * |
|
37 * @param string $filename MO file to load |
|
38 */ |
|
39 function import_from_file($filename) { |
|
40 $reader = new POMO_FileReader( $filename ); |
|
41 |
|
42 if ( ! $reader->is_resource() ) { |
|
43 return false; |
|
44 } |
|
45 |
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46 $this->filename = (string) $filename; |
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47 |
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48 return $this->import_from_reader( $reader ); |
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49 } |
|
50 |
|
51 /** |
|
52 * @param string $filename |
|
53 * @return bool |
|
54 */ |
|
55 function export_to_file($filename) { |
|
56 $fh = fopen($filename, 'wb'); |
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57 if ( !$fh ) return false; |
|
58 $res = $this->export_to_file_handle( $fh ); |
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59 fclose($fh); |
|
60 return $res; |
|
61 } |
|
62 |
|
63 /** |
|
64 * @return string|false |
|
65 */ |
|
66 function export() { |
|
67 $tmp_fh = fopen("php://temp", 'r+'); |
|
68 if ( !$tmp_fh ) return false; |
|
69 $this->export_to_file_handle( $tmp_fh ); |
|
70 rewind( $tmp_fh ); |
|
71 return stream_get_contents( $tmp_fh ); |
|
72 } |
|
73 |
|
74 /** |
|
75 * @param Translation_Entry $entry |
|
76 * @return bool |
|
77 */ |
|
78 function is_entry_good_for_export( $entry ) { |
|
79 if ( empty( $entry->translations ) ) { |
|
80 return false; |
|
81 } |
|
82 |
|
83 if ( !array_filter( $entry->translations ) ) { |
|
84 return false; |
|
85 } |
|
86 |
|
87 return true; |
|
88 } |
|
89 |
|
90 /** |
|
91 * @param resource $fh |
|
92 * @return true |
|
93 */ |
|
94 function export_to_file_handle($fh) { |
|
95 $entries = array_filter( $this->entries, array( $this, 'is_entry_good_for_export' ) ); |
|
96 ksort($entries); |
|
97 $magic = 0x950412de; |
|
98 $revision = 0; |
|
99 $total = count($entries) + 1; // all the headers are one entry |
|
100 $originals_lenghts_addr = 28; |
|
101 $translations_lenghts_addr = $originals_lenghts_addr + 8 * $total; |
|
102 $size_of_hash = 0; |
|
103 $hash_addr = $translations_lenghts_addr + 8 * $total; |
|
104 $current_addr = $hash_addr; |
|
105 fwrite($fh, pack('V*', $magic, $revision, $total, $originals_lenghts_addr, |
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106 $translations_lenghts_addr, $size_of_hash, $hash_addr)); |
|
107 fseek($fh, $originals_lenghts_addr); |
|
108 |
|
109 // headers' msgid is an empty string |
|
110 fwrite($fh, pack('VV', 0, $current_addr)); |
|
111 $current_addr++; |
|
112 $originals_table = chr(0); |
|
113 |
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114 $reader = new POMO_Reader(); |
|
115 |
|
116 foreach($entries as $entry) { |
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117 $originals_table .= $this->export_original($entry) . chr(0); |
|
118 $length = $reader->strlen($this->export_original($entry)); |
|
119 fwrite($fh, pack('VV', $length, $current_addr)); |
|
120 $current_addr += $length + 1; // account for the NULL byte after |
|
121 } |
|
122 |
|
123 $exported_headers = $this->export_headers(); |
|
124 fwrite($fh, pack('VV', $reader->strlen($exported_headers), $current_addr)); |
|
125 $current_addr += strlen($exported_headers) + 1; |
|
126 $translations_table = $exported_headers . chr(0); |
|
127 |
|
128 foreach($entries as $entry) { |
|
129 $translations_table .= $this->export_translations($entry) . chr(0); |
|
130 $length = $reader->strlen($this->export_translations($entry)); |
|
131 fwrite($fh, pack('VV', $length, $current_addr)); |
|
132 $current_addr += $length + 1; |
|
133 } |
|
134 |
|
135 fwrite($fh, $originals_table); |
|
136 fwrite($fh, $translations_table); |
|
137 return true; |
|
138 } |
|
139 |
|
140 /** |
|
141 * @param Translation_Entry $entry |
|
142 * @return string |
|
143 */ |
|
144 function export_original($entry) { |
|
145 //TODO: warnings for control characters |
|
146 $exported = $entry->singular; |
|
147 if ($entry->is_plural) $exported .= chr(0).$entry->plural; |
|
148 if ($entry->context) $exported = $entry->context . chr(4) . $exported; |
|
149 return $exported; |
|
150 } |
|
151 |
|
152 /** |
|
153 * @param Translation_Entry $entry |
|
154 * @return string |
|
155 */ |
|
156 function export_translations($entry) { |
|
157 //TODO: warnings for control characters |
|
158 return $entry->is_plural ? implode(chr(0), $entry->translations) : $entry->translations[0]; |
|
159 } |
|
160 |
|
161 /** |
|
162 * @return string |
|
163 */ |
|
164 function export_headers() { |
|
165 $exported = ''; |
|
166 foreach($this->headers as $header => $value) { |
|
167 $exported.= "$header: $value\n"; |
|
168 } |
|
169 return $exported; |
|
170 } |
|
171 |
|
172 /** |
|
173 * @param int $magic |
|
174 * @return string|false |
|
175 */ |
|
176 function get_byteorder($magic) { |
|
177 // The magic is 0x950412de |
|
178 |
|
179 // bug in PHP 5.0.2, see https://savannah.nongnu.org/bugs/?func=detailitem&item_id=10565 |
|
180 $magic_little = (int) - 1794895138; |
|
181 $magic_little_64 = (int) 2500072158; |
|
182 // 0xde120495 |
|
183 $magic_big = ((int) - 569244523) & 0xFFFFFFFF; |
|
184 if ($magic_little == $magic || $magic_little_64 == $magic) { |
|
185 return 'little'; |
|
186 } else if ($magic_big == $magic) { |
|
187 return 'big'; |
|
188 } else { |
|
189 return false; |
|
190 } |
|
191 } |
|
192 |
|
193 /** |
|
194 * @param POMO_FileReader $reader |
|
195 */ |
|
196 function import_from_reader($reader) { |
|
197 $endian_string = MO::get_byteorder($reader->readint32()); |
|
198 if (false === $endian_string) { |
|
199 return false; |
|
200 } |
|
201 $reader->setEndian($endian_string); |
|
202 |
|
203 $endian = ('big' == $endian_string)? 'N' : 'V'; |
|
204 |
|
205 $header = $reader->read(24); |
|
206 if ($reader->strlen($header) != 24) |
|
207 return false; |
|
208 |
|
209 // parse header |
|
210 $header = unpack("{$endian}revision/{$endian}total/{$endian}originals_lenghts_addr/{$endian}translations_lenghts_addr/{$endian}hash_length/{$endian}hash_addr", $header); |
|
211 if (!is_array($header)) |
|
212 return false; |
|
213 |
|
214 // support revision 0 of MO format specs, only |
|
215 if ( $header['revision'] != 0 ) { |
|
216 return false; |
|
217 } |
|
218 |
|
219 // seek to data blocks |
|
220 $reader->seekto( $header['originals_lenghts_addr'] ); |
|
221 |
|
222 // read originals' indices |
|
223 $originals_lengths_length = $header['translations_lenghts_addr'] - $header['originals_lenghts_addr']; |
|
224 if ( $originals_lengths_length != $header['total'] * 8 ) { |
|
225 return false; |
|
226 } |
|
227 |
|
228 $originals = $reader->read($originals_lengths_length); |
|
229 if ( $reader->strlen( $originals ) != $originals_lengths_length ) { |
|
230 return false; |
|
231 } |
|
232 |
|
233 // read translations' indices |
|
234 $translations_lenghts_length = $header['hash_addr'] - $header['translations_lenghts_addr']; |
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235 if ( $translations_lenghts_length != $header['total'] * 8 ) { |
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236 return false; |
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237 } |
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238 |
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239 $translations = $reader->read($translations_lenghts_length); |
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240 if ( $reader->strlen( $translations ) != $translations_lenghts_length ) { |
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241 return false; |
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242 } |
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243 |
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244 // transform raw data into set of indices |
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245 $originals = $reader->str_split( $originals, 8 ); |
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246 $translations = $reader->str_split( $translations, 8 ); |
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247 |
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248 // skip hash table |
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249 $strings_addr = $header['hash_addr'] + $header['hash_length'] * 4; |
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250 |
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251 $reader->seekto($strings_addr); |
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252 |
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253 $strings = $reader->read_all(); |
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254 $reader->close(); |
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255 |
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256 for ( $i = 0; $i < $header['total']; $i++ ) { |
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257 $o = unpack( "{$endian}length/{$endian}pos", $originals[$i] ); |
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258 $t = unpack( "{$endian}length/{$endian}pos", $translations[$i] ); |
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259 if ( !$o || !$t ) return false; |
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260 |
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261 // adjust offset due to reading strings to separate space before |
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262 $o['pos'] -= $strings_addr; |
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263 $t['pos'] -= $strings_addr; |
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264 |
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265 $original = $reader->substr( $strings, $o['pos'], $o['length'] ); |
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266 $translation = $reader->substr( $strings, $t['pos'], $t['length'] ); |
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267 |
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268 if ('' === $original) { |
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269 $this->set_headers($this->make_headers($translation)); |
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270 } else { |
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271 $entry = &$this->make_entry($original, $translation); |
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272 $this->entries[$entry->key()] = &$entry; |
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273 } |
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274 } |
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275 return true; |
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276 } |
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277 |
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278 /** |
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279 * Build a Translation_Entry from original string and translation strings, |
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280 * found in a MO file |
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281 * |
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282 * @static |
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283 * @param string $original original string to translate from MO file. Might contain |
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284 * 0x04 as context separator or 0x00 as singular/plural separator |
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285 * @param string $translation translation string from MO file. Might contain |
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286 * 0x00 as a plural translations separator |
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287 */ |
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288 function &make_entry($original, $translation) { |
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289 $entry = new Translation_Entry(); |
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290 // look for context |
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291 $parts = explode(chr(4), $original); |
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292 if (isset($parts[1])) { |
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293 $original = $parts[1]; |
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294 $entry->context = $parts[0]; |
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295 } |
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296 // look for plural original |
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297 $parts = explode(chr(0), $original); |
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298 $entry->singular = $parts[0]; |
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299 if (isset($parts[1])) { |
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300 $entry->is_plural = true; |
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301 $entry->plural = $parts[1]; |
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302 } |
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303 // plural translations are also separated by \0 |
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304 $entry->translations = explode(chr(0), $translation); |
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305 return $entry; |
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306 } |
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307 |
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308 /** |
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309 * @param int $count |
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310 * @return string |
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311 */ |
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312 function select_plural_form($count) { |
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313 return $this->gettext_select_plural_form($count); |
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314 } |
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315 |
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316 /** |
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317 * @return int |
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318 */ |
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319 function get_plural_forms_count() { |
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320 return $this->_nplurals; |
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321 } |
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322 } |
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323 endif; |
349 endif; |