Cleaned up
parent
8ac96041dd
commit
c05b7cf631
@ -1,61 +0,0 @@
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<?php
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/*
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* binary.class.php:
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* Utility functions for dealing with binary files/strings.
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* All functions assume network byte order (big-endian).
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*
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* Copyright (C) 2008, 2009 Patrik Fimml
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*
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* This file is part of glip.
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*
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* glip is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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* glip is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with glip. If not, see <http://www.gnu.org/licenses/>.
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*/
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final class Binary
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{
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static public function uint16($str, $pos=0)
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{
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return ord($str{$pos+0}) << 8 | ord($str{$pos+1});
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}
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static public function uint32($str, $pos=0)
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{
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$a = unpack('Nx', substr($str, $pos, 4));
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return $a['x'];
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}
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static public function nuint32($n, $str, $pos=0)
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{
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$r = array();
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for ($i = 0; $i < $n; $i++, $pos += 4)
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$r[] = Binary::uint32($str, $pos);
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return $r;
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}
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static public function fuint32($f) { return Binary::uint32(fread($f, 4)); }
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static public function nfuint32($n, $f) { return Binary::nuint32($n, fread($f, 4*$n)); }
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static public function git_varint($str, &$pos=0)
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{
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$r = 0;
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$c = 0x80;
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for ($i = 0; $c & 0x80; $i += 7)
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{
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$c = ord($str{$pos++});
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$r |= (($c & 0x7F) << $i);
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}
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return $r;
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}
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}
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@ -1,438 +0,0 @@
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<?php
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/*
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* Copyright (C) 2008, 2009 Patrik Fimml
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*
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* This file is part of glip.
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*
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* glip is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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* glip is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with glip. If not, see <http://www.gnu.org/licenses/>.
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*/
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require_once('binary.class.php');
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require_once('git_object.class.php');
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require_once('git_blob.class.php');
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require_once('git_commit.class.php');
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require_once('git_commit_stamp.class.php');
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require_once('git_tree.class.php');
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/**
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* @relates Git
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* @brief Convert a SHA-1 hash from hexadecimal to binary representation.
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*
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* @param $hex (string) The hash in hexadecimal representation.
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* @returns (string) The hash in binary representation.
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*/
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function sha1_bin($hex)
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{
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return pack('H40', $hex);
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}
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/**
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* @relates Git
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* @brief Convert a SHA-1 hash from binary to hexadecimal representation.
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*
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* @param $bin (string) The hash in binary representation.
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* @returns (string) The hash in hexadecimal representation.
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*/
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function sha1_hex($bin)
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{
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return bin2hex($bin);
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}
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class Git
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{
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public $dir;
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const OBJ_NONE = 0;
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const OBJ_COMMIT = 1;
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const OBJ_TREE = 2;
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const OBJ_BLOB = 3;
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const OBJ_TAG = 4;
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const OBJ_OFS_DELTA = 6;
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const OBJ_REF_DELTA = 7;
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static public function getTypeID($name)
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{
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if ($name == 'commit')
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return Git::OBJ_COMMIT;
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else if ($name == 'tree')
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return Git::OBJ_TREE;
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else if ($name == 'blob')
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return Git::OBJ_BLOB;
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else if ($name == 'tag')
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return Git::OBJ_TAG;
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throw new Exception(sprintf('unknown type name: %s', $name));
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}
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static public function getTypeName($type)
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{
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if ($type == Git::OBJ_COMMIT)
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return 'commit';
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else if ($type == Git::OBJ_TREE)
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return 'tree';
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else if ($type == Git::OBJ_BLOB)
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return 'blob';
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else if ($type == Git::OBJ_TAG)
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return 'tag';
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throw new Exception(sprintf('no string representation of type %d', $type));
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}
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public function __construct($dir)
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{
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$this->dir = realpath($dir);
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if ($this->dir === FALSE || !@is_dir($this->dir))
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throw new Exception(sprintf('not a directory: %s', $dir));
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$this->packs = array();
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$dh = opendir(sprintf('%s/objects/pack', $this->dir));
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if ($dh !== FALSE) {
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while (($entry = readdir($dh)) !== FALSE)
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if (preg_match('#^pack-([0-9a-fA-F]{40})\.idx$#', $entry, $m))
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$this->packs[] = sha1_bin($m[1]);
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closedir($dh);
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}
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}
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/**
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* @brief Tries to find $object_name in the fanout table in $f at $offset.
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*
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* @returns array The range where the object can be located (first possible
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* location and past-the-end location)
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*/
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protected function readFanout($f, $object_name, $offset)
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{
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if ($object_name{0} == "\x00")
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{
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$cur = 0;
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fseek($f, $offset);
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$after = Binary::fuint32($f);
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}
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else
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{
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fseek($f, $offset + (ord($object_name{0}) - 1)*4);
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$cur = Binary::fuint32($f);
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$after = Binary::fuint32($f);
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}
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return array($cur, $after);
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}
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/**
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* @brief Try to find an object in a pack.
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*
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* @param $object_name (string) name of the object (binary SHA1)
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* @returns (array) an array consisting of the name of the pack (string) and
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* the byte offset inside it, or NULL if not found
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*/
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protected function findPackedObject($object_name)
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{
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foreach ($this->packs as $pack_name)
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{
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$index = fopen(sprintf('%s/objects/pack/pack-%s.idx', $this->dir, sha1_hex($pack_name)), 'rb');
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flock($index, LOCK_SH);
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/* check version */
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$magic = fread($index, 4);
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if ($magic != "\xFFtOc")
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{
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/* version 1 */
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/* read corresponding fanout entry */
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list($cur, $after) = $this->readFanout($index, $object_name, 0);
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$n = $after-$cur;
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if ($n == 0)
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continue;
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/*
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* TODO: do a binary search in [$offset, $offset+24*$n)
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*/
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fseek($index, 4*256 + 24*$cur);
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for ($i = 0; $i < $n; $i++)
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{
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$off = Binary::fuint32($index);
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$name = fread($index, 20);
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if ($name == $object_name)
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{
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/* we found the object */
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fclose($index);
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return array($pack_name, $off);
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}
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}
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}
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else
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{
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/* version 2+ */
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$version = Binary::fuint32($index);
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if ($version == 2)
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{
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list($cur, $after) = $this->readFanout($index, $object_name, 8);
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if ($cur == $after)
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continue;
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fseek($index, 8 + 4*255);
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$total_objects = Binary::fuint32($index);
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/* look up sha1 */
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fseek($index, 8 + 4*256 + 20*$cur);
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for ($i = $cur; $i < $after; $i++)
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{
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$name = fread($index, 20);
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if ($name == $object_name)
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break;
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}
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if ($i == $after)
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continue;
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fseek($index, 8 + 4*256 + 24*$total_objects + 4*$i);
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$off = Binary::fuint32($index);
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if ($off & 0x80000000)
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{
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/* packfile > 2 GB. Gee, you really want to handle this
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* much data with PHP?
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*/
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throw new Exception('64-bit packfiles offsets not implemented');
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}
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fclose($index);
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return array($pack_name, $off);
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}
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else
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throw new Exception('unsupported pack index format');
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}
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fclose($index);
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}
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/* not found */
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return NULL;
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}
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/**
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* @brief Apply the git delta $delta to the byte sequence $base.
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*
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* @param $delta (string) the delta to apply
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* @param $base (string) the sequence to patch
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* @returns (string) the patched byte sequence
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*/
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protected function applyDelta($delta, $base)
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{
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$pos = 0;
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$base_size = Binary::git_varint($delta, $pos);
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$result_size = Binary::git_varint($delta, $pos);
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$r = '';
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while ($pos < strlen($delta))
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{
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$opcode = ord($delta{$pos++});
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if ($opcode & 0x80)
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{
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/* copy a part of $base */
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$off = 0;
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if ($opcode & 0x01) $off = ord($delta{$pos++});
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if ($opcode & 0x02) $off |= ord($delta{$pos++}) << 8;
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if ($opcode & 0x04) $off |= ord($delta{$pos++}) << 16;
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if ($opcode & 0x08) $off |= ord($delta{$pos++}) << 24;
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$len = 0;
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if ($opcode & 0x10) $len = ord($delta{$pos++});
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if ($opcode & 0x20) $len |= ord($delta{$pos++}) << 8;
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if ($opcode & 0x40) $len |= ord($delta{$pos++}) << 16;
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if ($len == 0) $len = 0x10000;
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$r .= substr($base, $off, $len);
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}
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else
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{
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/* take the next $opcode bytes as they are */
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$r .= substr($delta, $pos, $opcode);
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$pos += $opcode;
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}
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}
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return $r;
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}
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/**
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* @brief Unpack an object from a pack.
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*
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* @param $pack (resource) open .pack file
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* @param $object_offset (integer) offset of the object in the pack
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* @returns (array) an array consisting of the object type (int) and the
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* binary representation of the object (string)
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*/
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protected function unpackObject($pack, $object_offset)
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{
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fseek($pack, $object_offset);
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/* read object header */
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$c = ord(fgetc($pack));
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$type = ($c >> 4) & 0x07;
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$size = $c & 0x0F;
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for ($i = 4; $c & 0x80; $i += 7)
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{
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$c = ord(fgetc($pack));
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$size |= (($c & 0x7F) << $i);
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}
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/* compare sha1_file.c:1608 unpack_entry */
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if ($type == Git::OBJ_COMMIT || $type == Git::OBJ_TREE || $type == Git::OBJ_BLOB || $type == Git::OBJ_TAG)
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{
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/*
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* We don't know the actual size of the compressed
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* data, so we'll assume it's less than
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* $object_size+512.
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*
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* FIXME use PHP stream filter API as soon as it behaves
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* consistently
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*/
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$data = gzuncompress(fread($pack, $size+512), $size);
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}
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else if ($type == Git::OBJ_OFS_DELTA)
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{
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/* 20 = maximum varint length for offset */
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$buf = fread($pack, $size+512+20);
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/*
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* contrary to varints in other places, this one is big endian
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* (and 1 is added each turn)
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* see sha1_file.c (get_delta_base)
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*/
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$pos = 0;
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$offset = -1;
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do
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{
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$offset++;
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$c = ord($buf{$pos++});
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$offset = ($offset << 7) + ($c & 0x7F);
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}
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while ($c & 0x80);
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$delta = gzuncompress(substr($buf, $pos), $size);
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unset($buf);
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$base_offset = $object_offset - $offset;
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assert($base_offset >= 0);
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list($type, $base) = $this->unpackObject($pack, $base_offset);
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$data = $this->applyDelta($delta, $base);
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}
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else if ($type == Git::OBJ_REF_DELTA)
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{
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$base_name = fread($pack, 20);
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list($type, $base) = $this->getRawObject($base_name);
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// $size is the length of the uncompressed delta
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$delta = gzuncompress(fread($pack, $size+512), $size);
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$data = $this->applyDelta($delta, $base);
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}
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else
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throw new Exception(sprintf('object of unknown type %d', $type));
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return array($type, $data);
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}
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/**
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* @brief Fetch an object in its binary representation by name.
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*
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* Throws an exception if the object cannot be found.
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*
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* @param $object_name (string) name of the object (binary SHA1)
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* @returns (array) an array consisting of the object type (int) and the
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* binary representation of the object (string)
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*/
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protected function getRawObject($object_name)
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{
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static $cache = array();
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/* FIXME allow limiting the cache to a certain size */
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if (isset($cache[$object_name]))
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return $cache[$object_name];
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$sha1 = sha1_hex($object_name);
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$path = sprintf('%s/objects/%s/%s', $this->dir, substr($sha1, 0, 2), substr($sha1, 2));
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if (file_exists($path))
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{
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list($hdr, $object_data) = explode("\0", gzuncompress(file_get_contents($path)), 2);
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sscanf($hdr, "%s %d", $type, $object_size);
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$object_type = Git::getTypeID($type);
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$r = array($object_type, $object_data);
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}
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else if ($x = $this->findPackedObject($object_name))
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{
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list($pack_name, $object_offset) = $x;
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$pack = fopen(sprintf('%s/objects/pack/pack-%s.pack', $this->dir, sha1_hex($pack_name)), 'rb');
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flock($pack, LOCK_SH);
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/* check magic and version */
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$magic = fread($pack, 4);
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$version = Binary::fuint32($pack);
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if ($magic != 'PACK' || $version != 2)
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throw new Exception('unsupported pack format');
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$r = $this->unpackObject($pack, $object_offset);
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fclose($pack);
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}
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else
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throw new Exception(sprintf('object not found: %s', sha1_hex($object_name)));
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$cache[$object_name] = $r;
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return $r;
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}
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/**
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* @brief Fetch an object in its PHP representation.
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*
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* @param $name (string) name of the object (binary SHA1)
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* @returns (GitObject) the object
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*/
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public function getObject($name)
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{
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list($type, $data) = $this->getRawObject($name);
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$object = GitObject::create($this, $type);
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$object->unserialize($data);
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assert($name == $object->getName());
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return $object;
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}
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/**
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* @brief Look up a branch.
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*
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* @param $branch (string) The branch to look up, defaulting to @em master.
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* @returns (string) The tip of the branch (binary sha1).
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*/
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public function getTip($branch='master')
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{
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$subpath = sprintf('refs/heads/%s', $branch);
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$path = sprintf('%s/%s', $this->dir, $subpath);
|
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if (file_exists($path))
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return sha1_bin(file_get_contents($path));
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$path = sprintf('%s/packed-refs', $this->dir);
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if (file_exists($path))
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{
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$head = NULL;
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$f = fopen($path, 'rb');
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flock($f, LOCK_SH);
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while ($head === NULL && ($line = fgets($f)) !== FALSE)
|
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{
|
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if ($line{0} == '#')
|
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continue;
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$parts = explode(' ', trim($line));
|
||||
if (count($parts) == 2 && $parts[1] == $subpath)
|
||||
$head = sha1_bin($parts[0]);
|
||||
}
|
||||
fclose($f);
|
||||
if ($head !== NULL)
|
||||
return $head;
|
||||
}
|
||||
throw new Exception(sprintf('no such branch: %s', $branch));
|
||||
}
|
||||
}
|
||||
|
@ -1,45 +0,0 @@
|
||||
<?php
|
||||
/*
|
||||
* Copyright (C) 2008 Patrik Fimml
|
||||
*
|
||||
* This file is part of glip.
|
||||
*
|
||||
* glip is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
|
||||
* glip is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with glip. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
require_once('git_object.class.php');
|
||||
|
||||
class GitBlob extends GitObject
|
||||
{
|
||||
/**
|
||||
* @brief The data contained in this blob.
|
||||
*/
|
||||
public $data = NULL;
|
||||
|
||||
public function __construct($repo)
|
||||
{
|
||||
parent::__construct($repo, Git::OBJ_BLOB);
|
||||
}
|
||||
|
||||
public function _unserialize($data)
|
||||
{
|
||||
$this->data = $data;
|
||||
}
|
||||
|
||||
public function _serialize()
|
||||
{
|
||||
return $this->data;
|
||||
}
|
||||
}
|
||||
|
@ -1,174 +0,0 @@
|
||||
<?php
|
||||
/*
|
||||
* Copyright (C) 2008, 2009 Patrik Fimml
|
||||
*
|
||||
* This file is part of glip.
|
||||
*
|
||||
* glip is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
|
||||
* glip is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with glip. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
require_once('git_object.class.php');
|
||||
require_once('git_commit_stamp.class.php');
|
||||
|
||||
class GitCommit extends GitObject
|
||||
{
|
||||
/**
|
||||
* @brief (string) The tree referenced by this commit, as binary sha1
|
||||
* string.
|
||||
*/
|
||||
public $tree;
|
||||
|
||||
/**
|
||||
* @brief (array of string) Parent commits of this commit, as binary sha1
|
||||
* strings.
|
||||
*/
|
||||
public $parents;
|
||||
|
||||
/**
|
||||
* @brief (GitCommitStamp) The author of this commit.
|
||||
*/
|
||||
public $author;
|
||||
|
||||
/**
|
||||
* @brief (GitCommitStamp) The committer of this commit.
|
||||
*/
|
||||
public $committer;
|
||||
|
||||
/**
|
||||
* @brief (string) Commit summary, i.e. the first line of the commit message.
|
||||
*/
|
||||
public $summary;
|
||||
|
||||
/**
|
||||
* @brief (string) Everything after the first line of the commit message.
|
||||
*/
|
||||
public $detail;
|
||||
|
||||
public function __construct($repo)
|
||||
{
|
||||
parent::__construct($repo, Git::OBJ_COMMIT);
|
||||
}
|
||||
|
||||
public function _unserialize($data)
|
||||
{
|
||||
$lines = explode("\n", $data);
|
||||
unset($data);
|
||||
$meta = array('parent' => array());
|
||||
while (($line = array_shift($lines)) != '')
|
||||
{
|
||||
$parts = explode(' ', $line, 2);
|
||||
if (!isset($meta[$parts[0]]))
|
||||
$meta[$parts[0]] = array($parts[1]);
|
||||
else
|
||||
$meta[$parts[0]][] = $parts[1];
|
||||
}
|
||||
|
||||
$this->tree = sha1_bin($meta['tree'][0]);
|
||||
$this->parents = array_map('sha1_bin', $meta['parent']);
|
||||
$this->author = new GitCommitStamp;
|
||||
$this->author->unserialize($meta['author'][0]);
|
||||
$this->committer = new GitCommitStamp;
|
||||
$this->committer->unserialize($meta['committer'][0]);
|
||||
|
||||
$this->summary = array_shift($lines);
|
||||
$this->detail = implode("\n", $lines);
|
||||
|
||||
$this->history = NULL;
|
||||
}
|
||||
|
||||
public function _serialize()
|
||||
{
|
||||
$s = '';
|
||||
$s .= sprintf("tree %s\n", sha1_hex($this->tree));
|
||||
foreach ($this->parents as $parent)
|
||||
$s .= sprintf("parent %s\n", sha1_hex($parent));
|
||||
$s .= sprintf("author %s\n", $this->author->serialize());
|
||||
$s .= sprintf("committer %s\n", $this->committer->serialize());
|
||||
$s .= "\n".$this->summary."\n".$this->detail;
|
||||
return $s;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Get commit history in topological order.
|
||||
*
|
||||
* @returns (array of GitCommit)
|
||||
*/
|
||||
public function getHistory()
|
||||
{
|
||||
if ($this->history)
|
||||
return $this->history;
|
||||
|
||||
/* count incoming edges */
|
||||
$inc = array();
|
||||
|
||||
$queue = array($this);
|
||||
while (($commit = array_shift($queue)) !== NULL)
|
||||
{
|
||||
foreach ($commit->parents as $parent)
|
||||
{
|
||||
if (!isset($inc[$parent]))
|
||||
{
|
||||
$inc[$parent] = 1;
|
||||
$queue[] = $this->repo->getObject($parent);
|
||||
}
|
||||
else
|
||||
$inc[$parent]++;
|
||||
}
|
||||
}
|
||||
|
||||
$queue = array($this);
|
||||
$r = array();
|
||||
while (($commit = array_pop($queue)) !== NULL)
|
||||
{
|
||||
array_unshift($r, $commit);
|
||||
foreach ($commit->parents as $parent)
|
||||
{
|
||||
if (--$inc[$parent] == 0)
|
||||
$queue[] = $this->repo->getObject($parent);
|
||||
}
|
||||
}
|
||||
|
||||
$this->history = $r;
|
||||
return $r;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Get the tree referenced by this commit.
|
||||
*
|
||||
* @returns The GitTree referenced by this commit.
|
||||
*/
|
||||
public function getTree()
|
||||
{
|
||||
return $this->repo->getObject($this->tree);
|
||||
}
|
||||
|
||||
/**
|
||||
* @copybrief GitTree::find()
|
||||
*
|
||||
* This is a convenience function calling GitTree::find() on the commit's
|
||||
* tree.
|
||||
*
|
||||
* @copydetails GitTree::find()
|
||||
*/
|
||||
public function find($path)
|
||||
{
|
||||
return $this->getTree()->find($path);
|
||||
}
|
||||
|
||||
static public function treeDiff($a, $b)
|
||||
{
|
||||
return GitTree::treeDiff($a ? $a->getTree() : NULL, $b ? $b->getTree() : NULL);
|
||||
}
|
||||
}
|
||||
|
@ -1,45 +0,0 @@
|
||||
<?php
|
||||
/*
|
||||
* Copyright (C) 2008 Patrik Fimml
|
||||
*
|
||||
* This file is part of glip.
|
||||
*
|
||||
* glip is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
|
||||
* glip is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with glip. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
class GitCommitStamp
|
||||
{
|
||||
public $name;
|
||||
public $email;
|
||||
public $time;
|
||||
public $offset;
|
||||
|
||||
public function unserialize($data)
|
||||
{
|
||||
assert(preg_match('/^(.+?)\s+<(.+?)>\s+(\d+)\s+([+-]\d{4})$/', $data, $m));
|
||||
$this->name = $m[1];
|
||||
$this->email = $m[2];
|
||||
$this->time = intval($m[3]);
|
||||
$off = intval($m[4]);
|
||||
$this->offset = ($off/100) * 3600 + ($off%100) * 60;
|
||||
}
|
||||
|
||||
public function serialize()
|
||||
{
|
||||
if ($this->offset%60)
|
||||
throw new Exception('cannot serialize sub-minute timezone offset');
|
||||
return sprintf('%s <%s> %d %+05d', $this->name, $this->email, $this->time, ($this->offset/3600)*100 + ($this->offset/60)%60);
|
||||
}
|
||||
}
|
||||
|
@ -1,154 +0,0 @@
|
||||
<?php
|
||||
/*
|
||||
* Copyright (C) 2008 Patrik Fimml
|
||||
*
|
||||
* This file is part of glip.
|
||||
*
|
||||
* glip is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
|
||||
* glip is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with glip. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
class GitObject
|
||||
{
|
||||
/**
|
||||
* @brief (Git) The repository this object belongs to.
|
||||
*/
|
||||
public $repo;
|
||||
protected $type;
|
||||
protected $name = NULL;
|
||||
|
||||
/**
|
||||
* @brief Get the object's cached SHA-1 hash value.
|
||||
*
|
||||
* @returns (string) The hash value (binary sha1).
|
||||
*/
|
||||
public function getName() { return $this->name; }
|
||||
|
||||
/**
|
||||
* @brief Get the object's type.
|
||||
*
|
||||
* @returns (integer) One of Git::OBJ_COMMIT, Git::OBJ_TREE or
|
||||
* GIT::OBJ_BLOB.
|
||||
*/
|
||||
public function getType() { return $this->type; }
|
||||
|
||||
/**
|
||||
* @brief Create a GitObject of the specified type.
|
||||
*
|
||||
* @param $repo (Git) The repository the object belongs to.
|
||||
* @param $type (integer) Object type (one of Git::OBJ_COMMIT,
|
||||
* Git::OBJ_TREE, Git::OBJ_BLOB).
|
||||
* @returns A new GitCommit, GitTree or GitBlob object respectively.
|
||||
*/
|
||||
static public function create($repo, $type)
|
||||
{
|
||||
if ($type == Git::OBJ_COMMIT)
|
||||
return new GitCommit($repo);
|
||||
if ($type == Git::OBJ_TREE)
|
||||
return new GitTree($repo);
|
||||
if ($type == Git::OBJ_BLOB)
|
||||
return new GitBlob($repo);
|
||||
throw new Exception(sprintf('unhandled object type %d', $type));
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Internal function to calculate the hash value of a git object of the
|
||||
* current type with content $data.
|
||||
*
|
||||
* @param $data (string) The data to hash.
|
||||
* @returns (string) The hash value (binary sha1).
|
||||
*/
|
||||
protected function hash($data)
|
||||
{
|
||||
$hash = hash_init('sha1');
|
||||
hash_update($hash, Git::getTypeName($this->type));
|
||||
hash_update($hash, ' ');
|
||||
hash_update($hash, strlen($data));
|
||||
hash_update($hash, "\0");
|
||||
hash_update($hash, $data);
|
||||
return hash_final($hash, TRUE);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Internal constructor for use from derived classes.
|
||||
*
|
||||
* Never use this function except from a derived class. Use the
|
||||
* constructor of a derived class, create() or Git::getObject() instead.
|
||||
*/
|
||||
public function __construct($repo, $type)
|
||||
{
|
||||
$this->repo = $repo;
|
||||
$this->type = $type;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Populate this object with values from its string representation.
|
||||
*
|
||||
* Note that the types of $this and the serialized object in $data have to
|
||||
* match.
|
||||
*
|
||||
* @param $data (string) The serialized representation of an object, as
|
||||
* it would be stored by git.
|
||||
*/
|
||||
public function unserialize($data)
|
||||
{
|
||||
$this->name = $this->hash($data);
|
||||
$this->_unserialize($data);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Get the string representation of an object.
|
||||
*
|
||||
* @returns The serialized representation of the object, as it would be
|
||||
* stored by git.
|
||||
*/
|
||||
public function serialize()
|
||||
{
|
||||
return $this->_serialize();
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Update the SHA-1 name of an object.
|
||||
*
|
||||
* You need to call this function after making changes to attributes in
|
||||
* order to have getName() return the correct hash.
|
||||
*/
|
||||
public function rehash()
|
||||
{
|
||||
$this->name = $this->hash($this->serialize());
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Write this object in its serialized form to the git repository
|
||||
* given at creation time.
|
||||
*/
|
||||
public function write()
|
||||
{
|
||||
$sha1 = sha1_hex($this->name);
|
||||
$path = sprintf('%s/objects/%s/%s', $this->repo->dir, substr($sha1, 0, 2), substr($sha1, 2));
|
||||
if (file_exists($path))
|
||||
return FALSE;
|
||||
$dir = dirname($path);
|
||||
if (!is_dir($dir))
|
||||
mkdir(dirname($path), 0770);
|
||||
$f = fopen($path, 'ab');
|
||||
flock($f, LOCK_EX);
|
||||
ftruncate($f, 0);
|
||||
$data = $this->serialize();
|
||||
$data = Git::getTypeName($this->type).' '.strlen($data)."\0".$data;
|
||||
fwrite($f, gzcompress($data));
|
||||
fclose($f);
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
|
@ -1,267 +0,0 @@
|
||||
<?php
|
||||
/*
|
||||
* Copyright (C) 2008, 2009 Patrik Fimml
|
||||
*
|
||||
* This file is part of glip.
|
||||
*
|
||||
* glip is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
|
||||
* glip is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with glip. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
class GitTreeError extends Exception {}
|
||||
class GitTreeInvalidPathError extends GitTreeError {}
|
||||
|
||||
require_once('git_object.class.php');
|
||||
|
||||
class GitTree extends GitObject
|
||||
{
|
||||
public $nodes = array();
|
||||
|
||||
public function __construct($repo)
|
||||
{
|
||||
parent::__construct($repo, Git::OBJ_TREE);
|
||||
}
|
||||
|
||||
public function _unserialize($data)
|
||||
{
|
||||
$this->nodes = array();
|
||||
$start = 0;
|
||||
while ($start < strlen($data))
|
||||
{
|
||||
$node = new stdClass;
|
||||
|
||||
$pos = strpos($data, "\0", $start);
|
||||
list($node->mode, $node->name) = explode(' ', substr($data, $start, $pos-$start), 2);
|
||||
$node->mode = intval($node->mode, 8);
|
||||
$node->is_dir = !!($node->mode & 040000);
|
||||
$node->is_submodule = ($node->mode == 57344);
|
||||
$node->object = substr($data, $pos+1, 20);
|
||||
$start = $pos+21;
|
||||
|
||||
$this->nodes[$node->name] = $node;
|
||||
}
|
||||
unset($data);
|
||||
}
|
||||
|
||||
protected static function nodecmp(&$a, &$b)
|
||||
{
|
||||
return strcmp($a->name, $b->name);
|
||||
}
|
||||
|
||||
public function _serialize()
|
||||
{
|
||||
$s = '';
|
||||
/* git requires nodes to be sorted */
|
||||
uasort($this->nodes, array('GitTree', 'nodecmp'));
|
||||
foreach ($this->nodes as $node)
|
||||
$s .= sprintf("%s %s\0%s", base_convert($node->mode, 10, 8), $node->name, $node->object);
|
||||
return $s;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Find the tree or blob at a certain path.
|
||||
*
|
||||
* @throws GitTreeInvalidPathError The path was found to be invalid. This
|
||||
* can happen if you are trying to treat a file like a directory (i.e.
|
||||
* @em foo/bar where @em foo is a file).
|
||||
*
|
||||
* @param $path (string) The path to look for, relative to this tree.
|
||||
* @returns The GitTree or GitBlob at the specified path, or NULL if none
|
||||
* could be found.
|
||||
*/
|
||||
public function find($path)
|
||||
{
|
||||
if (!is_array($path))
|
||||
$path = explode('/', $path);
|
||||
|
||||
while ($path && !$path[0])
|
||||
array_shift($path);
|
||||
if (!$path)
|
||||
return $this->getName();
|
||||
|
||||
if (!isset($this->nodes[$path[0]]))
|
||||
return NULL;
|
||||
$cur = $this->nodes[$path[0]]->object;
|
||||
|
||||
array_shift($path);
|
||||
while ($path && !$path[0])
|
||||
array_shift($path);
|
||||
|
||||
if (!$path)
|
||||
return $cur;
|
||||
else
|
||||
{
|
||||
$cur = $this->repo->getObject($cur);
|
||||
if (!($cur instanceof GitTree))
|
||||
throw new GitTreeInvalidPathError;
|
||||
return $cur->find($path);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Recursively list the contents of a tree.
|
||||
*
|
||||
* @returns (array mapping string to string) An array where the keys are
|
||||
* paths relative to the current tree, and the values are SHA-1 names of
|
||||
* the corresponding blobs in binary representation.
|
||||
*/
|
||||
public function listRecursive()
|
||||
{
|
||||
$r = array();
|
||||
|
||||
foreach ($this->nodes as $node)
|
||||
{
|
||||
if ($node->is_dir)
|
||||
{
|
||||
if ($node->is_submodule)
|
||||
{
|
||||
$r[$node->name. ':submodule'] = $node->object;
|
||||
}
|
||||
else
|
||||
{
|
||||
$subtree = $this->repo->getObject($node->object);
|
||||
foreach ($subtree->listRecursive() as $entry => $blob)
|
||||
{
|
||||
$r[$node->name . '/' . $entry] = $blob;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
$r[$node->name] = $node->object;
|
||||
}
|
||||
}
|
||||
|
||||
return $r;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Updates a node in this tree.
|
||||
*
|
||||
* Missing directories in the path will be created automatically.
|
||||
*
|
||||
* @param $path (string) Path to the node, relative to this tree.
|
||||
* @param $mode Git mode to set the node to. 0 if the node shall be
|
||||
* cleared, i.e. the tree or blob shall be removed from this path.
|
||||
* @param $object (string) Binary SHA-1 hash of the object that shall be
|
||||
* placed at the given path.
|
||||
*
|
||||
* @returns (array of GitObject) An array of GitObject%s that were newly
|
||||
* created while updating the specified node. Those need to be written to
|
||||
* the repository together with the modified tree.
|
||||
*/
|
||||
public function updateNode($path, $mode, $object)
|
||||
{
|
||||
if (!is_array($path))
|
||||
$path = explode('/', $path);
|
||||
$name = array_shift($path);
|
||||
if (count($path) == 0)
|
||||
{
|
||||
/* create leaf node */
|
||||
if ($mode)
|
||||
{
|
||||
$node = new stdClass;
|
||||
$node->mode = $mode;
|
||||
$node->name = $name;
|
||||
$node->object = $object;
|
||||
$node->is_dir = !!($mode & 040000);
|
||||
|
||||
$this->nodes[$node->name] = $node;
|
||||
}
|
||||
else
|
||||
unset($this->nodes[$name]);
|
||||
|
||||
return array();
|
||||
}
|
||||
else
|
||||
{
|
||||
/* descend one level */
|
||||
if (isset($this->nodes[$name]))
|
||||
{
|
||||
$node = $this->nodes[$name];
|
||||
if (!$node->is_dir)
|
||||
throw new GitTreeInvalidPathError;
|
||||
$subtree = clone $this->repo->getObject($node->object);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* create new tree */
|
||||
$subtree = new GitTree($this->repo);
|
||||
|
||||
$node = new stdClass;
|
||||
$node->mode = 040000;
|
||||
$node->name = $name;
|
||||
$node->is_dir = TRUE;
|
||||
|
||||
$this->nodes[$node->name] = $node;
|
||||
}
|
||||
$pending = $subtree->updateNode($path, $mode, $object);
|
||||
|
||||
$subtree->rehash();
|
||||
$node->object = $subtree->getName();
|
||||
|
||||
$pending[] = $subtree;
|
||||
return $pending;
|
||||
}
|
||||
}
|
||||
|
||||
const TREEDIFF_A = 0x01;
|
||||
const TREEDIFF_B = 0x02;
|
||||
|
||||
const TREEDIFF_REMOVED = self::TREEDIFF_A;
|
||||
const TREEDIFF_ADDED = self::TREEDIFF_B;
|
||||
const TREEDIFF_CHANGED = 0x03;
|
||||
|
||||
static public function treeDiff($a_tree, $b_tree)
|
||||
{
|
||||
$a_blobs = $a_tree ? $a_tree->listRecursive() : array();
|
||||
$b_blobs = $b_tree ? $b_tree->listRecursive() : array();
|
||||
|
||||
$a_files = array_keys($a_blobs);
|
||||
$b_files = array_keys($b_blobs);
|
||||
|
||||
$changes = array();
|
||||
|
||||
sort($a_files);
|
||||
sort($b_files);
|
||||
$a = $b = 0;
|
||||
while ($a < count($a_files) || $b < count($b_files))
|
||||
{
|
||||
if ($a < count($a_files) && $b < count($b_files))
|
||||
$cmp = strcmp($a_files[$a], $b_files[$b]);
|
||||
else
|
||||
$cmp = 0;
|
||||
if ($b >= count($b_files) || $cmp < 0)
|
||||
{
|
||||
$changes[$a_files[$a]] = self::TREEDIFF_REMOVED;
|
||||
$a++;
|
||||
}
|
||||
else if ($a >= count($a_files) || $cmp > 0)
|
||||
{
|
||||
$changes[$b_files[$b]] = self::TREEDIFF_ADDED;
|
||||
$b++;
|
||||
}
|
||||
else
|
||||
{
|
||||
if ($a_blobs[$a_files[$a]] != $b_blobs[$b_files[$b]])
|
||||
$changes[$a_files[$a]] = self::TREEDIFF_CHANGED;
|
||||
|
||||
$a++;
|
||||
$b++;
|
||||
}
|
||||
}
|
||||
|
||||
return $changes;
|
||||
}
|
||||
}
|
||||
|
@ -1,24 +0,0 @@
|
||||
<?php
|
||||
/*
|
||||
* Copyright (C) 2009 Patrik Fimml
|
||||
*
|
||||
* This file is part of glip.
|
||||
*
|
||||
* glip is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
|
||||
* glip is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with glip. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
$old_include_path = set_include_path(dirname(__FILE__));
|
||||
require_once('git.class.php');
|
||||
set_include_path($old_include_path);
|
||||
|
Loading…
Reference in New Issue