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<?php
# +----------------------------------------------------------------------+
# | Copyright (c) 1997-2024 The PHP Group |
# +----------------------------------------------------------------------+
# | This source file is subject to version 3.01 of the PHP license, |
# | that is bundled with this package in the file LICENSE, and is |
# | available through the world-wide-web at the following url: |
# | https://www.php.net/license/3_01.txt. |
# | If you did not receive a copy of the PHP license and are unable to |
# | obtain it through the world-wide-web, please send a note to |
# | license@php.net, so we can mail you a copy immediately. |
# +----------------------------------------------------------------------+
# | Authors: André L F S Bacci <ae php.net> |
# +----------------------------------------------------------------------+
# | Description: Common functions that interact with git command line. |
# +----------------------------------------------------------------------+
require_once __DIR__ . '/all.php';
class GitSlowUtils
{
public static function checkDiffOnlyWsChange( string $gdir , RevcheckDataFile $file ) : bool
{
$hash = $file->hashRvtg;
$flnm = $file->path == "" ? $file->name : $file->path . "/" . $file->name;
$gdir = escapeshellarg( $gdir );
$flnm = escapeshellarg( $flnm );
$hash = escapeshellarg( $hash );
$func = '[' . __CLASS__ . ':' . __FUNCTION__ . ']';
// Fast path
// The git -b option is a bit misleading. It will ignore ws change
// on existing ws runs, but will report insertion or remotion of
// ws runs. This suffices for detecting significant ws changes and
// also ignoring insignificant ws changes in most cases we are
// interessed.
$output = `git -C $gdir diff -b $hash -- $flnm`;
$onlyws = $output == "";
// Slow path
if ( $onlyws )
{
$prev = `git -C $gdir show $hash:$flnm )`;
$next = `git -C $gdir show HEAD:$flnm )`;
if ( $prev == "" || $next == "" )
{
fprintf( STDERR , "$func Failed to read file contents.\n" );
return $onlyws;
}
$prev = GitUtils::discardPrefixSuffixEmptyWs( $prev );
$next = GitUtils::discardPrefixSuffixEmptyWs( $next );
if ( $prev != $next )
{
// Not really an error, but a theory. Report this bug/issue
// to start a discussion if this ws change must be ignored
// or tracked.
fprintf( STDERR , "$func Debug: Fast and slow path differ.\n" );
return false;
}
}
return $onlyws;
}
private static function discardPrefixSuffixEmptyWs( string $text ) : string
{
$lines = explode( "\n" , $text );
$trimLines = [];
foreach ( $lines as $line )
$trimLines[] = trim( $line );
return implode( "" , $trimLines );
}
public static function parseAddsDels( string $gdir , RevcheckDataFile $file )
{
$hash = $file->hashRvtg;
$name = $file->path == "" ? $file->name : $file->path . "/" . $file->name;
$gdir = escapeshellarg( $gdir );
$hash = escapeshellarg( $hash );
$name = escapeshellarg( $name );
$output = `git -C $gdir diff --numstat $hash -- $name`;
if ( $output )
{
preg_match( '/(\d+)\s+(\d+)/' , $output , $matches );
if ( $matches )
{
$file->adds = $matches[1];
$file->dels = $matches[2];
}
}
}
}
|
