public function testBase64Vlq()
{
for ($i = -255; $i < 256; $i++) {
$v = Kwf_SourceMaps_Base64VLQ::encode($i);
$result = Kwf_SourceMaps_Base64VLQ::decode($v);
$this->assertEquals($result, $i);
$this->assertEquals($v, "");
}
}
/**
* Concat sourcemaps and keep mappings intact
*
* This is implemented very efficent by avoiding to parse the whole mappings string.
*/
public function concat(Kwf_SourceMaps_SourceMap $other)
{
if ($this->_mappingsChanged) {
$this->_generateMappings();
}
$missingLines = substr_count($this->_fileContents, "\n") - substr_count($this->_map->mappings, ";");
if ($missingLines > 0) {
$this->_map->mappings .= str_repeat(';', $missingLines);
}
if (!isset($this->_map->{'_x_org_koala-framework_last'})) {
$this->_addLastExtension();
}
if (strlen($this->_fileContents) > 0) {
if (substr($this->_fileContents, -1) != "\n") {
$this->_fileContents .= "\n";
$this->_map->mappings .= ';';
}
}
$this->_fileContents .= $other->_fileContents;
$data = $other->getMapContentsData();
if ($this->_map->mappings) {
$previousFileLast = $this->_map->{'_x_org_koala-framework_last'};
} else {
$previousFileLast = (object) array('source' => 0, 'originalLine' => 0, 'originalColumn' => 0, 'name' => 0);
}
if (!$data->mappings) {
$data->mappings = str_repeat(';', substr_count($other->_fileContents, "\n"));
$data->{'_x_org_koala-framework_last'} = (object) array('source' => -1, 'originalLine' => $previousFileLast->originalLine, 'originalColumn' => $previousFileLast->originalColumn, 'name' => -1);
}
$previousFileSourcesCount = count($this->_map->sources);
$previousFileNamesCount = count($this->_map->names);
if ($previousFileLast->source > $previousFileSourcesCount) {
if ($previousFileSourcesCount != 0 && $previousFileLast->source != 0) {
throw new Exception("Invalid last source, must not be higher than sources");
}
}
if ($previousFileLast->name > $previousFileNamesCount) {
if ($previousFileNamesCount != 0 && $previousFileLast->name != 0) {
throw new Exception("Invalid last name, must not be higher than names");
}
}
if ($data->sources) {
foreach ($data->sources as $s) {
$this->_map->sources[] = $s;
}
}
if ($data->names) {
foreach ($data->names as $n) {
$this->_map->names[] = $n;
}
}
$otherMappings = $data->mappings;
$str = '';
$otherMappingsEnd = strlen($otherMappings);
$otherMappingsPos = 0;
while ($otherMappingsPos < $otherMappingsEnd && $otherMappings[$otherMappingsPos] === ';') {
$str .= $otherMappings[$otherMappingsPos];
$otherMappingsPos++;
}
if ($otherMappingsPos < $otherMappingsEnd) {
// Generated column.
$str .= Kwf_SourceMaps_Base64VLQ::encode(Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos));
if ($otherMappingsPos < $otherMappingsEnd && !($otherMappings[$otherMappingsPos] == ',' || $otherMappings[$otherMappingsPos] == ';')) {
// Original source.
$value = Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos);
if ($previousFileSourcesCount) {
$absoluteValue = $value + $previousFileSourcesCount;
$value = $absoluteValue - $previousFileLast->source;
}
$str .= Kwf_SourceMaps_Base64VLQ::encode($value);
// Original line.
$str .= Kwf_SourceMaps_Base64VLQ::encode(Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos) - $previousFileLast->originalLine);
// Original column.
$str .= Kwf_SourceMaps_Base64VLQ::encode(Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos) - $previousFileLast->originalColumn);
// Original name.
if ($otherMappingsPos < $otherMappingsEnd && !($otherMappings[$otherMappingsPos] == ',' || $otherMappings[$otherMappingsPos] == ';')) {
$value = Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos);
if ($previousFileNamesCount) {
$absoluteValue = $value + $previousFileNamesCount;
$value = $absoluteValue - $previousFileLast->name;
}
$str .= Kwf_SourceMaps_Base64VLQ::encode($value);
} else {
if (!count($data->names)) {
//file doesn't have names at all, we don't have to adjust that offset
} else {
//loop thru mappings until we find a block with name
while ($otherMappingsPos < $otherMappingsEnd) {
if ($otherMappings[$otherMappingsPos] === ';') {
$str .= $otherMappings[$otherMappingsPos];
$otherMappingsPos++;
} else {
if ($otherMappings[$otherMappingsPos] === ',') {
$str .= $otherMappings[$otherMappingsPos];
$otherMappingsPos++;
} else {
// Generated column.
$str .= Kwf_SourceMaps_Base64VLQ::encode(Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos));
if ($otherMappingsPos < $otherMappingsEnd && !($otherMappings[$otherMappingsPos] == ',' || $otherMappings[$otherMappingsPos] == ';')) {
// Original source.
$str .= Kwf_SourceMaps_Base64VLQ::encode(Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos));
// Original line.
$str .= Kwf_SourceMaps_Base64VLQ::encode(Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos));
// Original column.
$str .= Kwf_SourceMaps_Base64VLQ::encode(Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos));
if ($otherMappingsPos < $otherMappingsEnd && !($otherMappings[$otherMappingsPos] == ',' || $otherMappings[$otherMappingsPos] == ';')) {
// Original name.
$value = Kwf_SourceMaps_Base64VLQ::decodePos($otherMappings, $otherMappingsPos);
if ($previousFileNamesCount) {
$absoluteValue = $value + $previousFileNamesCount;
$value = $absoluteValue - $previousFileLast->name;
}
$str .= Kwf_SourceMaps_Base64VLQ::encode($value);
break;
}
}
}
}
}
}
}
}
}
$this->_map->mappings .= $str . substr($otherMappings, $otherMappingsPos);
$this->_map->{'_x_org_koala-framework_last'} = (object) array('source' => $previousFileSourcesCount + $data->{'_x_org_koala-framework_last'}->source, 'name' => $previousFileNamesCount + $data->{'_x_org_koala-framework_last'}->name, 'originalLine' => $data->{'_x_org_koala-framework_last'}->originalLine, 'originalColumn' => $data->{'_x_org_koala-framework_last'}->originalColumn);
}
* @param integer $number
* @return string
*/
public static function base64Encode($number)
{
if ($number < 0 || $number > 63) {
throw new Exception("Must be between 0 and 63: " . $number);
}
return self::$INT_TO_CHAR[$number];
}
/**
* Decode single 6-bit digit from base64
*
* @param string $char
* @return number
*/
public static function base64Decode($char)
{
if (!array_key_exists($char, self::$CHAR_TO_INT)) {
throw new Exception("Not a valid base 64 digit: " . $char);
}
return self::$CHAR_TO_INT[$char];
}
}
// Initialize char conversion table.
Kwf_SourceMaps_Base64VLQ::$CHAR_TO_INT = array();
Kwf_SourceMaps_Base64VLQ::$INT_TO_CHAR = array();
foreach (str_split('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/') as $i => $char) {
Kwf_SourceMaps_Base64VLQ::$CHAR_TO_INT[$char] = $i;
Kwf_SourceMaps_Base64VLQ::$INT_TO_CHAR[$i] = $char;
}
