htdocs/lib/GitCommand.class.php

   1 <?php
   2 /* GitCommand.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 GitCommand {
  20         private static $git = null;
  21         private static $counter = 0;
  22
  23         private static function command_header() {
  24                 if(!self::$git) {
  25                         //find git executable
  26                         if(GitConfig::GIT_EXEC)
  27                                 self::$git = GitConfig::GIT_EXEC;
  28                         else
  29                                 self::$git = str_replace(array("\n", "\r"), array("", ""), `which git`);
  30                         if(!self::$git) {
  31                                 trigger_error("Can not find git executable.", E_USER_ERROR);
  32                                 self::$git = "git";
  33                         }
  34                 }
  35                 $command = self::$git;
  36
  37                 return $command;
  38         }
  39
  40         private static function git_execute($params, $git_path = null) {
  41                 $result = array();
  42
  43                 if($git_path) {
  44                         $args = array("--git-dir=".$git_path);
  45                         $args = array_merge($args, $params);
  46                 } else
  47                         $args = $params;
  48
  49                 $command = self::command_header();
  50                 foreach($args as $arg) {
  51                         $command .= ' '.escapeshellarg($arg);
  52                 }
  53
  54                 exec($command, $result);
  55                 self::$counter++;
  56                 return implode("\n", $result);
  57         }
  58
  59         public static function core_version() {
  60                 $args = array("--version");
  61                 $version = self::git_execute($args);
  62                 preg_match("/[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/i", $version, $result);
  63                 return $result[0];
  64         }
  65
  66         public static function last_activity($git_path, $ref = null) {
  67                 $args = array("for-each-ref", "--format=%(committer)", "--sort=-committerdate", "--count=1");
  68                 if($ref)
  69                         $args[] = $ref;
  70                 $age = self::git_execute($args, $git_path);
  71                 preg_match("/[0-9]{9,}/i", $age, $result);
  72                 return $result[0];
  73         }
  74
  75         private static function parse_commit($commit_data) {
  76                 $commit = array();
  77                 $rev_lines = explode("\n", str_replace("\r", "", $commit_data));
  78                 $commit['id'] = $rev_lines[0];
  79                 $commit['parent'] = array();
  80                 if(!preg_match("/^[a-f0-9]{40}$/i", $commit['id']))
  81                         return null;
  82                 foreach($rev_lines as $rev_line) {
  83                         if(substr($rev_line, 0, 4) == "    ") {
  84                                 if(array_key_exists('text', $commit))
  85                                         $commit['text'] .= "\n";
  86                                 else
  87                                         $commit['text'] = '';
  88                                 $commit['text'] .= substr($rev_line, 4);
  89                         } else {
  90                                 $opt = explode(" ", $rev_line, 2);
  91                                 if($opt[0] == "tree")
  92                                         $commit['tree'] = $opt[1];
  93                                 else if($opt[0] == "parent")
  94                                         $commit['parent'][] = $opt[1];
  95                                 else if($opt[0] == "author") {
  96                                         preg_match('/(.*) <([^>]*)> ([0-9]*) ([+\-0-9]{5})/i', $opt[1], $matches);
  97                                         $commit['author'] = $matches[1];
  98                                         $commit['author_mail'] = $matches[2];
  99                                         $commit['author_time'] = $matches[3];
 100                                         $commit['author_timezone'] = $matches[4];
 101                                 } else if($opt[0] == "committer") {
 102                                         preg_match('/(.*) <([^>]*)> ([0-9]*) ([+\-0-9]{5})/i', $opt[1], $matches);
 103                                         $commit['committer'] = $matches[1];
 104                                         $commit['committer_mail'] = $matches[2];
 105                                         $commit['committer_time'] = $matches[3];
 106                                         $commit['committer_timezone'] = $matches[4];
 107                                 }
 108                         }
 109                 }
 110                 return $commit;
 111         }
 112
 113         public static function get_commits($git_path, $head, $maxcount, $skip, $file = null) {
 114                 $args = array("rev-list", "--header", "--max-count=".$maxcount, "--skip=".$skip, ($head ? $head : "--all"), "--");
 115                 if($file)
 116                         $args[] = $file;
 117                 $commit_list = self::git_execute($args, $git_path);
 118                 $commits = array();
 119                 foreach(explode("\000", $commit_list) as $commit) {
 120                         if($commit)
 121                                 $commits[] = self::parse_commit($commit);
 122                 }
 123                 return $commits;
 124         }
 125
 126         public static function get_commit($git_path, $commit_id) {
 127                 $args = array("rev-list", "--header", "--max-count=1", ($commit_id ? $commit_id : "--all"), "--");
 128                 $commit_data = self::git_execute($args, $git_path);
 129                 $commit = self::parse_commit($commit_data);
 130                 return $commit;
 131         }
 132
 133         public static function get_hash($git_path, $ref) {
 134                 $args = array("rev-parse", "--verify", "-q", $ref);
 135                 $result = self::git_execute($args, $git_path);
 136                 if(preg_match("#([a-f0-9]{40})#i", $result, $match))
 137                         return $match[1];
 138                 return null;
 139         }
 140
 141         private static function parse_difftree($line) {
 142                 $entry = array();
 143                 if(preg_match('/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/i', $line, $matches)) {
 144                         $entry['parents'] = 1;
 145                         $entry['from_mode'] = $matches[1];
 146                         $entry['to_mode'] = $matches[2];
 147                         $entry['from_id'] = $matches[3];
 148                         $entry['to_id'] = $matches[4];
 149                         $entry['status'] = $matches[5];
 150                         $entry['similarity'] = $matches[6];
 151                         $entry['file'] = $matches[7];
 152                         if($entry['status'] == 'R' || $entry['status'] == 'C') { //renamed or copied
 153                                 $files = explode("\t", $entry['file']);
 154                                 $entry['from_file'] = $files[0];
 155                                 $entry['to_file'] = $files[1];
 156                         }
 157                 } else if(preg_match('/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$/i', $line, $matches)) {
 158                         $entry['parents'] = strlen($matches[1]);
 159                         $from_modes = explode(" ", $matches[2]);
 160                         $entry['from_mode'] = array_slice($from_modes, 1);
 161                         $entry['to_mode'] = $from_modes[0];
 162                         $from_ids = explode(" ", $matches[3]);
 163                         $entry['from_id'] = array_slice($from_ids, 1);
 164                         $entry['to_id'] = $from_ids[0];
 165                         $entry['status'] = str_split($matches[4]);
 166                         $entry['file'] = $matches[5];
 167                 }
 168                 return $entry;
 169         }
 170
 171         public static function get_commit_changes($git_path, $commit_id, $parents) {
 172                 $args = array("diff-tree", "-r", "--no-commit-id");
 173                 switch(GitConfig::DETECT_RENAME_LEVEL) {
 174                 case 0:
 175                         $args[] = "-M";
 176                         break;
 177                 case 1:
 178                         $args[] = "-C";
 179                         break;
 180                 case 2:
 181                         $args[] = "-C";
 182                         $args[] = "--find-copies-harder";
 183                         break;
 184                 }
 185                 if(GitConfig::DETECT_REWRITES)
 186                         $args[] = "-B";
 187                 if(is_array($parents) && count($parents) > 1)
 188                         $args[] = "-c";
 189                 else if(is_array($parents) && count($parents) == 1)
 190                         $args[] = $parents[0];
 191                 else
 192                         $args[] = "--root";
 193                 $args[] = $commit_id;
 194                 $args[] = "--";
 195                 $result = self::git_execute($args, $git_path);
 196                 $tree = array();
 197                 foreach(explode("\n", $result) as $line) {
 198                         if($line == "")
 199                                 continue;
 200                         $tree[] = self::parse_difftree($line);
 201                 }
 202                 return $tree;
 203         }
 204
 205         public static function get_commit_diff($git_path, $commit_id, $parents) {
 206                 $args = array("diff-tree", "-r", "--no-commit-id", "--patch-with-raw", "--full-index");
 207                 switch(GitConfig::DETECT_RENAME_LEVEL) {
 208                 case 0:
 209                         $args[] = "-M";
 210                         break;
 211                 case 1:
 212                         $args[] = "-C";
 213                         break;
 214                 case 2:
 215                         $args[] = "-C";
 216                         $args[] = "--find-copies-harder";
 217                         break;
 218                 }
 219                 if(GitConfig::DETECT_REWRITES)
 220                         $args[] = "-B";
 221                 if(is_array($parents) && count($parents) > 1)
 222                         $args[] = "--cc";
 223                 else if(is_array($parents) && count($parents) == 1)
 224                         $args[] = $parents[0];
 225                 else
 226                         $args[] = "--root";
 227                 $args[] = $commit_id;
 228                 $args[] = "--";
 229                 $result = self::git_execute($args, $git_path);
 230                 $tree = array();
 231                 $diffs = array();
 232                 $diff = null;
 233                 $parse_difftree = true;
 234                 foreach(explode("\n", $result) as $line) {
 235                         if($line == "" && $parse_difftree)
 236                                 $parse_difftree = false;
 237                         else if($parse_difftree)
 238                                 $tree[] = self::parse_difftree($line);
 239                         else {
 240                                 if(preg_match('/^diff/i', $line)) {
 241                                         if($diff)
 242                                                 $diffs[] = $diff;
 243                                         $diff = array();
 244                                 }
 245                                 $diff[] = $line;
 246                         }
 247                 }
 248                 if($diff)
 249                         $diffs[] = $diff;
 250                 $diff_data['tree'] = $tree;
 251                 return array('tree' => $tree, 'diffs' => $diffs);
 252         }
 253 }