mambax7 /
xoopseditors
| Conditions | 26 |
| Paths | 4563 |
| Total Lines | 223 |
| Lines | 25 |
| Ratio | 11.21 % |
| Changes | 0 | ||
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
| 1 | <?php |
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| 36 | function Analyze() { |
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| 37 | |||
| 38 | $info = &$this->getid3->info; |
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| 39 | |||
| 40 | $info['fileformat'] = 'gzip'; |
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| 41 | |||
| 42 | $start_length = 10; |
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| 43 | $unpack_header = 'a1id1/a1id2/a1cmethod/a1flags/a4mtime/a1xflags/a1os'; |
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| 44 | |||
| 45 | //+---+---+---+---+---+---+---+---+---+---+ |
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| 46 | //|ID1|ID2|CM |FLG| MTIME |XFL|OS | |
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| 47 | //+---+---+---+---+---+---+---+---+---+---+ |
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| 48 | |||
| 49 | @fseek($this->getid3->fp, 0); |
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| 50 | $buffer = @fread($this->getid3->fp, $info['filesize']); |
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| 51 | |||
| 52 | $arr_members = explode("\x1F\x8B\x08", $buffer); |
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| 53 | |||
| 54 | while (true) { |
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| 55 | $is_wrong_members = false; |
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| 56 | $num_members = intval(count($arr_members)); |
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| 57 | for ($i = 0; $i < $num_members; $i++) { |
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| 58 | if (strlen($arr_members[$i]) == 0) { |
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| 59 | continue; |
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| 60 | } |
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| 61 | $buf = "\x1F\x8B\x08".$arr_members[$i]; |
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| 62 | |||
| 63 | $attr = unpack($unpack_header, substr($buf, 0, $start_length)); |
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| 64 | if (!$this->get_os_type(ord($attr['os']))) { |
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| 65 | |||
| 66 | // Merge member with previous if wrong OS type |
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| 67 | $arr_members[$i - 1] .= $buf; |
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| 68 | $arr_members[$i] = ''; |
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| 69 | $is_wrong_members = true; |
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| 70 | continue; |
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| 71 | } |
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| 72 | } |
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| 73 | if (!$is_wrong_members) { |
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| 74 | break; |
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| 75 | } |
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| 76 | } |
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| 77 | |||
| 78 | $fpointer = 0; |
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| 79 | $idx = 0; |
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| 80 | for ($i = 0; $i < $num_members; $i++) { |
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| 81 | if (strlen($arr_members[$i]) == 0) { |
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| 82 | continue; |
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| 83 | } |
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| 84 | $info_gzip_member_header_idx = &$info['gzip']['member_header'][++$idx]; |
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| 85 | |||
| 86 | $buff = "\x1F\x8B\x08".$arr_members[$i]; |
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| 87 | |||
| 88 | $attr = unpack($unpack_header, substr($buff, 0, $start_length)); |
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| 89 | $info_gzip_member_header_idx['filemtime'] = getid3_lib::LittleEndian2Int($attr['mtime']); |
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| 90 | $info_gzip_member_header_idx['raw']['id1'] = ord($attr['cmethod']); |
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| 91 | $info_gzip_member_header_idx['raw']['id2'] = ord($attr['cmethod']); |
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| 92 | $info_gzip_member_header_idx['raw']['cmethod'] = ord($attr['cmethod']); |
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| 93 | $info_gzip_member_header_idx['raw']['os'] = ord($attr['os']); |
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| 94 | $info_gzip_member_header_idx['raw']['xflags'] = ord($attr['xflags']); |
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| 95 | $info_gzip_member_header_idx['raw']['flags'] = ord($attr['flags']); |
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| 96 | |||
| 97 | $info_gzip_member_header_idx['flags']['crc16'] = (bool) ($info_gzip_member_header_idx['raw']['flags'] & 0x02); |
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| 98 | $info_gzip_member_header_idx['flags']['extra'] = (bool) ($info_gzip_member_header_idx['raw']['flags'] & 0x04); |
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| 99 | $info_gzip_member_header_idx['flags']['filename'] = (bool) ($info_gzip_member_header_idx['raw']['flags'] & 0x08); |
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| 100 | $info_gzip_member_header_idx['flags']['comment'] = (bool) ($info_gzip_member_header_idx['raw']['flags'] & 0x10); |
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| 101 | |||
| 102 | $info_gzip_member_header_idx['compression'] = $this->get_xflag_type($info_gzip_member_header_idx['raw']['xflags']); |
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| 103 | |||
| 104 | $info_gzip_member_header_idx['os'] = $this->get_os_type($info_gzip_member_header_idx['raw']['os']); |
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| 105 | if (!$info_gzip_member_header_idx['os']) { |
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| 106 | $info['error'][] = 'Read error on gzip file'; |
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| 107 | return false; |
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| 108 | } |
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| 109 | |||
| 110 | $fpointer = 10; |
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| 111 | $arr_xsubfield = array (); |
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| 112 | |||
| 113 | // bit 2 - FLG.FEXTRA |
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| 114 | //+---+---+=================================+ |
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| 115 | //| XLEN |...XLEN bytes of "extra field"...| |
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| 116 | //+---+---+=================================+ |
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| 117 | |||
| 118 | if ($info_gzip_member_header_idx['flags']['extra']) { |
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| 119 | $w_xlen = substr($buff, $fpointer, 2); |
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| 120 | $xlen = getid3_lib::LittleEndian2Int($w_xlen); |
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| 121 | $fpointer += 2; |
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| 122 | |||
| 123 | $info_gzip_member_header_idx['raw']['xfield'] = substr($buff, $fpointer, $xlen); |
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| 124 | |||
| 125 | // Extra SubFields |
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| 126 | //+---+---+---+---+==================================+ |
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| 127 | //|SI1|SI2| LEN |... LEN bytes of subfield data ...| |
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| 128 | //+---+---+---+---+==================================+ |
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| 129 | |||
| 130 | $idx = 0; |
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| 131 | while (true) { |
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| 132 | if ($idx >= $xlen) { |
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| 133 | break; |
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| 134 | } |
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| 135 | $si1 = ord(substr($buff, $fpointer + $idx++, 1)); |
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| 136 | $si2 = ord(substr($buff, $fpointer + $idx++, 1)); |
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| 137 | if (($si1 == 0x41) && ($si2 == 0x70)) { |
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| 138 | $w_xsublen = substr($buff, $fpointer+$idx, 2); |
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| 139 | $xsublen = getid3_lib::LittleEndian2Int($w_xsublen); |
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| 140 | $idx += 2; |
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| 141 | $arr_xsubfield[] = substr($buff, $fpointer+$idx, $xsublen); |
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| 142 | $idx += $xsublen; |
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| 143 | } else { |
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| 144 | break; |
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| 145 | } |
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| 146 | } |
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| 147 | $fpointer += $xlen; |
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| 148 | } |
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| 149 | |||
| 150 | // bit 3 - FLG.FNAME |
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| 151 | //+=========================================+ |
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| 152 | //|...original file name, zero-terminated...| |
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| 153 | //+=========================================+ |
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| 154 | // GZIP files may have only one file, with no filename, so assume original filename is current filename without .gz |
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| 155 | |||
| 156 | $info_gzip_member_header_idx['filename'] = eregi_replace('.gz$', '', @$info['filename']); |
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| 157 | if ($info_gzip_member_header_idx['flags']['filename']) { |
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| 158 | while (true) { |
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| 159 | if (ord($buff[$fpointer]) == 0) { |
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| 160 | $fpointer++; |
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| 161 | break; |
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| 162 | } |
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| 163 | $info_gzip_member_header_idx['filename'] .= $buff[$fpointer]; |
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| 164 | $fpointer++; |
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| 165 | } |
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| 166 | } |
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| 167 | |||
| 168 | // bit 4 - FLG.FCOMMENT |
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| 169 | //+===================================+ |
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| 170 | //|...file comment, zero-terminated...| |
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| 171 | //+===================================+ |
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| 172 | |||
| 173 | if ($info_gzip_member_header_idx['flags']['comment']) { |
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| 174 | while (true) { |
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| 175 | if (ord($buff[$fpointer]) == 0) { |
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| 176 | $fpointer++; |
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| 177 | break; |
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| 178 | } |
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| 179 | $info_gzip_member_header_idx['comment'] .= $buff[$fpointer]; |
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| 180 | $fpointer++; |
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| 181 | } |
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| 182 | } |
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| 183 | |||
| 184 | // bit 1 - FLG.FHCRC |
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| 185 | //+---+---+ |
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| 186 | //| CRC16 | |
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| 187 | //+---+---+ |
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| 188 | |||
| 189 | if ($info_gzip_member_header_idx['flags']['crc16']) { |
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| 190 | $w_crc = substr($buff, $fpointer, 2); |
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| 191 | $info_gzip_member_header_idx['crc16'] = getid3_lib::LittleEndian2Int($w_crc); |
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| 192 | $fpointer += 2; |
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| 193 | } |
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| 194 | |||
| 195 | // bit 0 - FLG.FTEXT |
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| 196 | //if ($info_gzip_member_header_idx['raw']['flags'] & 0x01) { |
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| 197 | // Ignored... |
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| 198 | //} |
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| 199 | // bits 5, 6, 7 - reserved |
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| 200 | |||
| 201 | $info_gzip_member_header_idx['crc32'] = getid3_lib::LittleEndian2Int(substr($buff, strlen($buff) - 8, 4)); |
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| 202 | $info_gzip_member_header_idx['filesize'] = getid3_lib::LittleEndian2Int(substr($buff, strlen($buff) - 4)); |
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| 203 | |||
| 204 | if ($this->option_gzip_parse_contents) { |
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| 205 | |||
| 206 | // Try to inflate GZip |
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| 207 | |||
| 208 | if (!function_exists('gzinflate')) { |
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| 209 | $this->getid3->warning('PHP does not have zlib support - contents not parsed.'); |
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| 210 | return true; |
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| 211 | } |
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| 212 | |||
| 213 | $csize = 0; |
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| 214 | $inflated = ''; |
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| 215 | $chkcrc32 = ''; |
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| 216 | |||
| 217 | $cdata = substr($buff, $fpointer); |
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| 218 | $cdata = substr($cdata, 0, strlen($cdata) - 8); |
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| 219 | $csize = strlen($cdata); |
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| 220 | $inflated = gzinflate($cdata); |
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| 221 | |||
| 222 | // Calculate CRC32 for inflated content |
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| 223 | $info_gzip_member_header_idx['crc32_valid'] = (bool) (sprintf('%u', crc32($inflated)) == $info_gzip_member_header_idx['crc32']); |
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| 224 | |||
| 225 | |||
| 226 | //// Analyse contents |
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| 227 | |||
| 228 | // write content to temp file |
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| 229 | if (($temp_file_name = tempnam('*', 'getID3')) === false) { |
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| 230 | throw new getid3_exception('Unable to create temporary file.'); |
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| 231 | } |
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| 232 | |||
| 233 | if ($tmp = fopen($temp_file_name, 'wb')) { |
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| 234 | fwrite($tmp, $inflated); |
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| 235 | fclose($tmp); |
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| 236 | |||
| 237 | // clone getid3 - we want same settings |
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| 238 | $clone = clone $this->getid3; |
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| 239 | unset($clone->info); |
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| 240 | try { |
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| 241 | $clone->Analyze($temp_file_name); |
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| 242 | $info_gzip_member_header_idx['parsed_content'] = $clone->info; |
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| 243 | } |
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| 244 | catch (getid3_exception $e) { |
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| 245 | // unable to parse contents |
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| 246 | } |
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| 247 | |||
| 248 | unlink($temp_file_name); |
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| 249 | } |
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| 250 | |||
| 251 | // Unknown/unhandled format |
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| 252 | else { |
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| 253 | |||
| 254 | } |
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| 255 | } |
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| 256 | } |
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| 257 | return true; |
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| 258 | } |
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| 259 | |||
| 296 | ?> |
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