htdocs/lib/PageClasses.diff.class.php

   1 <?php
   2 /* PageClasses.diff.class.php - phpgitweb
   3  * Copyright (C) 2011-2012  Philipp Kreil (pk910)
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 class diff {
  20         private $commit, $tree, $diff, $data = array();
  21
  22         public function __construct($commit, $tree, $diff) {
  23                 $this->commit = $commit;
  24                 $this->tree = $tree;
  25                 $this->diff = $diff;
  26         }
  27
  28         public static function generate_html($commit, $diff_data) {
  29                 $diff_id = 0;
  30                 $patch_id = 1;
  31                 $html = array();
  32                 foreach($diff_data['tree'] as $tree) {
  33                         do {
  34                                 if(array_key_exists($diff_id, $diff_data['diffs']))
  35                                         $diff = $diff_data['diffs'][$diff_id];
  36                                 else
  37                                         $diff = null;
  38                                 if($diff && preg_match('/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/i', $diff[0], $matches))
  39                                         $to_file = $matches[2];
  40                                 else if($diff && preg_match('/^diff --(cc|combined) ("?.*"?)$/i', $diff[0], $matches))
  41                                         $to_file = $matches[2];
  42                                 else
  43                                         $to_file = null;
  44                                 if(!$to_file || strtolower($to_file) != $tree['to_file']) {
  45                                         if($tree['parents'] > 1) {
  46                                                 //jump over missing diffs
  47                                                 $diffobj = new diff($commit, $tree, null);
  48                                                 $html[] = $diffobj->gen_contentprovider($patch_id);
  49                                                 $patch_id++;
  50                                                 break;
  51                                         }
  52                                         if(!$to_file)
  53                                                 break;
  54                                 }
  55                                 $diffobj = new diff($commit, $tree, $diff);
  56                                 $html[] = $diffobj->gen_contentprovider($patch_id);
  57                                 $diff_id++;
  58                                 do {
  59                                         if(!array_key_exists($diff_id, $diff_data['diffs']))
  60                                                 break;
  61                                         $diff = $diff_data['diffs'][$diff_id];
  62                                         if(preg_match('/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/i', $diff[0], $matches))
  63                                                 $to_file = $matches[2];
  64                                         else if(preg_match('/^diff --(cc|combined) ("?.*"?)$/i', $diff[0], $matches))
  65                                                 $to_file = $matches[2];
  66                                         else
  67                                                 break;
  68                                         if(!array_key_exists('to_file', $tree))
  69                                                 $tree['to_file'] = $tree['file'];
  70                                         if(strtolower($to_file) != $tree['to_file'])
  71                                                 break;
  72                                         $diffobj = new diff($commit, $tree, $diff);
  73                                         $html[] = $diffobj->gen_contentprovider(null);
  74                                         $diff_id++;
  75                                 } while(true);
  76                                 $patch_id++;
  77                                 break;
  78                         } while(true);
  79                 }
  80                 if($patch_id == 1) {
  81                         if(count($commit['parent']) > 1)
  82                                 $html[] = new ContentProvider('commitdiff', 'patch_nopatch_merge');
  83                         else
  84                                 $html[] = new ContentProvider('commitdiff', 'patch_nopatch_simple');
  85                 }
  86                 return $html;
  87         }
  88
  89         private function gen_diffcmd_header() {
  90                 $header = array();
  91                 if(!$this->diff) {
  92                         $header[] = "diff --cc ";
  93                         $header[] = new ContentProvider('commitdiff', 'patch_link_blob', array('hash' => $this->commit['id'], 'file' => $this->tree['to_file'], 'path' => ''));
  94                 } else if($this->tree['parents'] > 1) {
  95                         preg_match('!^(diff (.*?) )"?.*$!', $this->diff[0], $match);
  96                         $header[] = $match[1];
  97                         if(preg_match('/^[0]{40}$/', $this->tree['to_id']))
  98                                 $header[] = $this->tree['to_file'];
  99                         else
 100                                 $header[] = new ContentProvider('commitdiff', 'patch_link_blob', array('hash' => $this->commit['id'], 'file' => $this->tree['to_file'], 'path' => ''));
 101                 } else {
 102                         preg_match('!^(diff (.*?) )"?a/.*$!', $this->diff[0], $match);
 103                         $header[] = $match[1];
 104                         if(preg_match('/^[0]{40}$/', $this->tree['from_id']))
 105                                 $header[] = 'a/'.$this->tree['file'];
 106                         else
 107                                 $header[] = new ContentProvider('commitdiff', 'patch_link_blob', array('hash' => $this->commit['parent'][0], 'file' => $this->tree['from_file'], 'path' => 'a/'));
 108                         $header[] = ' ';
 109                         if(preg_match('/^[0]{40}$/', $this->tree['to_id']))
 110                                 $header[] = 'b/'.$this->tree['file'];
 111                         else
 112                                 $header[] = new ContentProvider('commitdiff', 'patch_link_blob', array('hash' => $this->commit['id'], 'file' => $this->tree['to_file'], 'path' => 'b/'));
 113                 }
 114                 return $header;
 115         }
 116
 117         private function gen_index_header($line) {
 118                 $header = array();
 119                 if(preg_match('/^((copy|rename) from ).*$/', $line, $matches)) {
 120                         $header[] = $matches[1];
 121                         if(array_key_exists('copy', $this->data))
 122                                 $this->data['copy']++;
 123                         else
 124                                 $this->data['copy'] = 0;
 125                         $header[] = new ContentProvider('commitdiff', 'patch_link_blob', array('hash' => $this->commit['parent'][$this->data['copy']], 'file' => $this->tree['from_file'], 'path' => ''));
 126                 } else if(preg_match('/^((copy|rename) to ).*$/', $line, $matches)) {
 127                         $header[] = $matches[1];
 128                         $header[] = new ContentProvider('commitdiff', 'patch_link_blob', array('hash' => $this->commit['id'], 'file' => $this->tree['to_file'], 'path' => ''));
 129                 } else if(preg_match('/^(index )[0-9a-fA-F]{40},[0-9a-fA-F]{40}/', $line, $matches)) { //combined diff
 130                         $header[] = $matches[1];
 131                         $parent_id = 0;
 132                         foreach($this->tree['from_id'] as $from_id) {
 133                                 if($parent_id)
 134                                         $header[] = ',';
 135                                 if(preg_match('/^[0]{40}$/', $from_id))
 136                                         $header[] = '0000000';
 137                                 else
 138                                         $header[] = new ContentProvider('commitdiff', 'patch_link_blob_id', array('hash' => $this->commit['parent'][$parent_id], 'file' => $this->tree['from_file'], 'id' => substr($from_id, 0, 7)));
 139                                 $parent_id++;
 140                         }
 141                 } else if(preg_match('/^(index )([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/', $line, $matches)) {
 142                         $header[] = $matches[1];
 143                         if(preg_match('/^[0]{40}$/', $matches[2]))
 144                                 $header[] = '0000000';
 145                         else
 146                                 $header[] = new ContentProvider('commitdiff', 'patch_link_blob_id', array('hash' => $this->commit['parent'][0], 'file' => $this->tree['from_file'], 'id' => substr($matches[2], 0, 7)));
 147                         $header[] = '..';
 148                         if(preg_match('/^[0]{40}$/', $matches[3]))
 149                                 $header[] = '0000000';
 150                         else
 151                                 $header[] = new ContentProvider('commitdiff', 'patch_link_blob_id', array('hash' => $this->commit['id'], 'file' => $this->tree['to_file'], 'id' => substr($matches[3], 0, 7)));
 152                 } else
 153                         $header[] = $line;
 154                 if(preg_match('/([0-7]{6})$/', $line, $matches)) {
 155                         $ftype = Tools::get_filetype($matches[1], true);
 156                         $header[] = new ContentProvider('commitdiff', 'patch_fileinfo', array('info' => $ftype));
 157                 }
 158                 return $header;
 159         }
 160
 161         private function format_line($line) {
 162                 $lineobj = new ContentProvider('commitdiff', 'patch_diffline');
 163                 $class = "";
 164                 if($this->tree['parents'] > 1) {
 165                         $prefix = substr($line, 0, $this->tree['parents']);
 166                         if(preg_match('/@/', $prefix))
 167                                 $class = " chunk_header";
 168                         else if(preg_match('/\\/', $prefix))
 169                                 $class = " incomplete";
 170                         else if(preg_match('/+/', $prefix))
 171                                 $class = " add";
 172                         else if(preg_match('/-/', $prefix))
 173                                 $class = " rem";
 174                 } else {
 175                         $prefix = substr($line, 0, 1);
 176                         if($prefix == '@')
 177                                 $class = " chunk_header";
 178                         else if($prefix == '\\')
 179                                 $class = " incomplete";
 180                         else if($prefix == '+')
 181                                 $class = " add";
 182                         else if($prefix == '-')
 183                                 $class = " rem";
 184                 }
 185                 $lineobj->set('class', $class);
 186                 $line = Tools::replaceTabs($line);
 187                 $lineobj->set('line', htmlentities($line));
 188
 189                 return $lineobj;
 190         }
 191
 192         private function gen_contentprovider($patch_id) {
 193                 if(!$this->diff)
 194                         $pageclass = 'patch_nodiff';
 195                 else if(!$patch_id)
 196                         $pageclass = 'patch_continued';
 197                 else
 198                         $pageclass = 'patch_normal';
 199                 $page = new ContentProvider('commitdiff', $pageclass);
 200                 $page->set('diffcmd', $this->gen_diffcmd_header());
 201                 $page->set('patch_id', $patch_id);
 202                 if(!$this->diff)
 203                         return $page;
 204                 $is_header = true;
 205                 $first_header = true;
 206                 for($i = 1; $i < count($this->diff); $i++) {
 207                         $line = $this->diff[$i];
 208                         if($is_header) {
 209                                 if(preg_match('/^--- |^diff /', $line))
 210                                         $is_header = false;
 211                                 else {
 212                                         if(!$first_header)
 213                                                 $page->append('header', '<br />');
 214                                         $page->append('header', $this->gen_index_header($line));
 215                                         $first_header = false;
 216                                         continue;
 217                                 }
 218                         }
 219                         $page->append('patch', $this->format_line($line));
 220
 221                 }
 222                 if($is_header)
 223                         $page->set('patch', '');
 224
 225                 return $page;
 226         }
 227
 228 }
 229
 230 ?>