src/Composer/Downloader/DownloadManager.php
public function download(PackageInterface $package, $targetDir, $preferSource = null)
    {
        $preferSource = null !== $preferSource ? $preferSource : $this->preferSource;
        $sourceType = $package->getSourceType();
        $distType = $package->getDistType();

        $sources = array();
        if ($sourceType) {
            $sources[] = 'source';
        }
        if ($distType) {
            $sources[] = 'dist';
        }

        if (empty($sources)) {
            throw new \InvalidArgumentException('Package '.$package.' must have a source or dist specified');
        }

        if (!$preferSource && ($this->preferDist || 'dist' === $this->resolvePackageInstallPreference($package))) {
            $sources = array_reverse($sources);
        }

        $this->filesystem->ensureDirectoryExists($targetDir);

        foreach ($sources as $i => $source) {
            if (isset($e)) {
                $this->io->writeError('    <warning>Now trying to download from ' . $source . '</warning>');
            }
            $package->setInstallationSource($source);
            try {
                $downloader = $this->getDownloaderForInstalledPackage($package);
                if ($downloader) {
                    $downloader->download($package, $targetDir);
                }
                break;
            } catch (\RuntimeException $e) {
                if ($i === count($sources) - 1) {
                    throw $e;
                }

                $this->io->writeError(
                    '    <warning>Failed to download '.
                    $package->getPrettyName().
                    ' from ' . $source . ': '.
                    $e->getMessage().'</warning>'
                );
            }
        }
    }
public function download(PackageInterface $package, $targetDir, $preferSource = null)
    {
        $preferSource = null !== $preferSource ? $preferSource : $this->preferSource;
        $sourceType = $package->getSourceType();
        $distType = $package->getDistType();

        $sources = array();
        if ($sourceType) {
            $sources[] = 'source';
        }
        if ($distType) {
            $sources[] = 'dist';
        }

        if (empty($sources)) {
            throw new \InvalidArgumentException('Package '.$package.' must have a source or dist specified');
        }

        if (!$preferSource && ($this->preferDist || 'dist' === $this->resolvePackageInstallPreference($package))) {
            $sources = array_reverse($sources);
        }

        $this->filesystem->ensureDirectoryExists($targetDir);

        foreach ($sources as $i => $source) {
            if (isset($e)) {
                $this->io->writeError('    <warning>Now trying to download from ' . $source . '</warning>');
            }
            $package->setInstallationSource($source);
            try {
                $downloader = $this->getDownloaderForInstalledPackage($package);
                if ($downloader) {
                    $downloader->download($package, $targetDir);
                }
                break;
            } catch (\RuntimeException $e) {
                if ($i === count($sources) - 1) {
                    throw $e;
                }

                $this->io->writeError(
                    '    <warning>Failed to download '.
                    $package->getPrettyName().
                    ' from ' . $source . ': '.
                    $e->getMessage().'</warning>'
                );
            }
        }
    }
public function download ( PackageInterface $ package , $ targetDir , $ preferSource = null ) { $ preferSource = null !== $ preferSource ? $ preferSource : $ this -> preferSource ; $ sourceType = $ package -> getSourceType ( ) ; $ distType = $ package -> getDistType ( ) ; $ sources = array ( ) ; if ( $ sourceType ) { $ sources [ ] = 'source' ; } if ( $ distType ) { $ sources [ ] = 'dist' ; } if ( empty ( $ sources ) ) { throw new \ InvalidArgumentException ( 'Package ' . $ package . ' must have a source or dist specified' ) ; } if ( ! $ preferSource && ( $ this -> preferDist || 'dist' === $ this -> resolvePackageInstallPreference ( $ package ) ) ) { $ sources = array_reverse ( $ sources ) ; } $ this -> filesystem -> ensureDirectoryExists ( $ targetDir ) ; foreach ( $ sources as $ i => $ source ) { if ( isset ( $ e ) ) { $ this -> io -> writeError ( '    <warning>Now trying to download from ' . $ source . '</warning>' ) ; } $ package -> setInstallationSource ( $ source ) ; try { $ downloader = $ this -> getDownloaderForInstalledPackage ( $ package ) ; if ( $ downloader ) { $ downloader -> download ( $ package , $ targetDir ) ; } break ; } catch ( \ RuntimeException $ e ) { if ( $ i === count ( $ sources ) - 1 ) { throw $ e ; } $ this -> io -> writeError ( '    <warning>Failed to download ' . $ package -> getPrettyName ( ) . ' from ' . $ source . ': ' . $ e -> getMessage ( ) . '</warning>' ) ; } } }
Downloads package into target dir.

@param PackageInterface $package      package instance
@param string           $targetDir    target dir
@param bool             $preferSource prefer installation from source

@throws \InvalidArgumentException if package have no urls to download from
@throws \RuntimeException
Downloads package into target dir .