install-utils.inc

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<?php

function install_version_checks() {
        # Turn off output buffering if it's on
        @ob_end_flush();
        
        if( !function_exists( "version_compare" ) ) {
                # version_compare was introduced in 4.1.0
                die( "Your PHP version is much too old; 4.0.x will _not_ work. 4.3.2 or higher is recommended. ABORTING.\n" );
        }
        if( version_compare( phpversion(), "4.3.2" ) < 0 ) {
                echo "WARNING: PHP 4.3.2 or higher is recommended. Older versions from 4.1.x up may work but are not actively supported.\n\n";
        }
        
        if (!extension_loaded('mysql')) {
                if (!dl('mysql.so')) {
                        print "Could not load MySQL driver! Please compile ".
                                  "php --with-mysql or install the mysql.so module.\n";
                exit;
                }
        }
        
        global $wgCommandLineMode;
        $wgCommandLineMode = true;
        umask( 000 );
        set_time_limit( 0 );
}

function copyfile( $sdir, $name, $ddir, $perms = 0664 ) {
        copyfileto( $sdir, $name, $ddir, $name, $perms );
}

function copyfileto( $sdir, $sname, $ddir, $dname, $perms = 0664 ) {
        global $wgInstallOwner, $wgInstallGroup;

        $d = "{$ddir}/{$dname}";
        if ( copy( "{$sdir}/{$sname}", $d ) ) {
                if ( isset( $wgInstallOwner ) ) { chown( $d, $wgInstallOwner ); }
                if ( isset( $wgInstallGroup ) ) { chgrp( $d, $wgInstallGroup ); }
                chmod( $d, $perms );
                # print "Copied \"{$sname}\" to \"{$d}\".\n";
        } else {
                print "Failed to copy file \"{$sname}\" to \"{$ddir}/{$dname}\".\n";
                exit();
        }
}

function copydirectory( $source, $dest ) {
        $handle = opendir( $source );
        while ( false !== ( $f = readdir( $handle ) ) ) {
                $fullname = "$source/$f";
                if ( $f{0} !="." && is_file( $fullname ) ) {
                        copyfile( $source, $f, $dest );
                }
        }
}

function readconsole( $prompt = "" ) {
        if ( function_exists( "readline" ) ) {
                return readline( $prompt );
        } else {
                print $prompt;
                $fp = fopen( "php://stdin", "r" );
                $resp = trim( fgets( $fp, 1024 ) );
                fclose( $fp );
                return $resp;
        }
}

function replacevars( $ins ) {
        $varnames = array(
                "wgDBserver", "wgDBname", "wgDBintlname", "wgDBuser",
                "wgDBpassword", "wgDBsqluser", "wgDBsqlpassword",
                "wgDBadminuser", "wgDBadminpassword"
        );

        foreach ( $varnames as $var ) {
                global $$var;
                $ins = str_replace( '{$' . $var . '}', $$var, $ins );
        }
        return $ins;
}

#
# Read and execute SQL commands from a file
#
function dbsource( $fname, $database = false ) {
        $fp = fopen( $fname, "r" );
        if ( false === $fp ) {
                print "Could not open \"{$fname}\".\n";
                exit();
        }

        $cmd = "";
        $done = false;

        while ( ! feof( $fp ) ) {
                $line = trim( fgets( $fp, 1024 ) );
                $sl = strlen( $line ) - 1;

                if ( $sl < 0 ) { continue; }
                if ( "-" == $line{0} && "-" == $line{1} ) { continue; }

                if ( ";" == $line{$sl} ) {
                        $done = true;
                        $line = substr( $line, 0, $sl );
                }

                if ( "" != $cmd ) { $cmd .= " "; }
                $cmd .= $line;

                if ( $done ) {
                        $cmd = replacevars( $cmd );
                        if( $database )
                                $res = $database->query( $cmd );
                        else
                                $res = mysql_query( $cmd );

                        if ( false === $res ) {
                                $err = mysql_error();
                                print "Query \"{$cmd}\" failed with error code \"$err\".\n";
                                exit();
                        }

                        $cmd = "";
                        $done = false;
                }
        }
        fclose( $fp );
}

# Obsolete, use Database::fieldExists()
function field_exists( $table, $field ) {
        $fname = "Update script: field_exists";
        $res = wfQuery( "DESCRIBE $table", $fname );
        $found = false;
        
        while ( $row = wfFetchObject( $res ) ) {
                if ( $row->Field == $field ) {
                        $found = true;
                        break;
                }
        }
        return $found;
}

# Obsolete Database::tableExists()
function table_exists( $db ) {
        global $wgDBname;
        $res = mysql_list_tables( $wgDBname );
        if( !$res ) {
                echo "** " . mysql_error() . "\n";
                return false;
        }
        for( $i = mysql_num_rows( $res ) - 1; $i--; $i > 0 ) {
                if( mysql_tablename( $res, $i ) == $db ) return true;
        }
        return false;
}

# Obsolete, use Database:fieldInfo()
function field_info( $table, $field ) {
        $res = mysql_query( "SELECT * FROM $table LIMIT 1" );
        $n = mysql_num_fields( $res );
        for( $i = 0; $i < $n; $i++ ) {
                $meta = mysql_fetch_field( $res, $i );
                if( $field == $meta->name ) {
                        return $meta;
                }
        }
        return false;
}

?>

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