function doCvsDiff($command, $options, $params)
{
$this->output = '';
if (sizeof($params) < 1) {
$help = $this->getHelp($command);
return $this->raiseError("{$command}: missing parameter: {$help['0']}");
}
$obj = new PEAR_Common();
$info = $obj->infoFromDescriptionFile($params[0]);
if (PEAR::isError($info)) {
return $this->raiseError($info);
}
$files = array_keys($info['filelist']);
$cmd = "cvs";
if (isset($options['quiet'])) {
$cmd .= ' -q';
unset($options['quiet']);
}
if (isset($options['reallyquiet'])) {
$cmd .= ' -Q';
unset($options['reallyquiet']);
}
if (isset($options['release'])) {
$cvsversion = preg_replace('/[^a-z0-9]/i', '_', $options['release']);
$cvstag = "RELEASE_{$cvsversion}";
$options['revision'] = $cvstag;
unset($options['release']);
}
$execute = true;
if (isset($options['dry-run'])) {
$execute = false;
unset($options['dry-run']);
}
$cmd .= ' diff';
// the rest of the options are passed right on to "cvs diff"
foreach ($options as $option => $optarg) {
$arg = @$this->commands[$command]['options'][$option]['arg'];
$short = @$this->commands[$command]['options'][$option]['shortopt'];
$cmd .= $short ? " -{$short}" : " --{$option}";
if ($arg && $optarg) {
$cmd .= ($short ? '' : '=') . escapeshellarg($optarg);
}
}
foreach ($files as $file) {
$cmd .= ' ' . escapeshellarg($file);
}
if ($this->config->get('verbose') > 1) {
$this->output .= "+ {$cmd}\n";
}
if ($execute) {
$fp = popen($cmd, "r");
while ($line = fgets($fp, 1024)) {
$this->output .= rtrim($line) . "\n";
}
pclose($fp);
}
$this->ui->outputData($this->output, $command);
return true;
}
