diff options
Diffstat (limited to 'vendor/github.com/hashicorp/go-getter/detect.go')
-rw-r--r-- | vendor/github.com/hashicorp/go-getter/detect.go | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/go-getter/detect.go b/vendor/github.com/hashicorp/go-getter/detect.go new file mode 100644 index 00000000..481b737c --- /dev/null +++ b/vendor/github.com/hashicorp/go-getter/detect.go @@ -0,0 +1,97 @@ +package getter + +import ( + "fmt" + "path/filepath" + + "github.com/hashicorp/go-getter/helper/url" +) + +// Detector defines the interface that an invalid URL or a URL with a blank +// scheme is passed through in order to determine if its shorthand for +// something else well-known. +type Detector interface { + // Detect will detect whether the string matches a known pattern to + // turn it into a proper URL. + Detect(string, string) (string, bool, error) +} + +// Detectors is the list of detectors that are tried on an invalid URL. +// This is also the order they're tried (index 0 is first). +var Detectors []Detector + +func init() { + Detectors = []Detector{ + new(GitHubDetector), + new(BitBucketDetector), + new(S3Detector), + new(FileDetector), + } +} + +// Detect turns a source string into another source string if it is +// detected to be of a known pattern. +// +// The third parameter should be the list of detectors to use in the +// order to try them. If you don't want to configure this, just use +// the global Detectors variable. +// +// This is safe to be called with an already valid source string: Detect +// will just return it. +func Detect(src string, pwd string, ds []Detector) (string, error) { + getForce, getSrc := getForcedGetter(src) + + // Separate out the subdir if there is one, we don't pass that to detect + getSrc, subDir := SourceDirSubdir(getSrc) + + u, err := url.Parse(getSrc) + if err == nil && u.Scheme != "" { + // Valid URL + return src, nil + } + + for _, d := range ds { + result, ok, err := d.Detect(getSrc, pwd) + if err != nil { + return "", err + } + if !ok { + continue + } + + var detectForce string + detectForce, result = getForcedGetter(result) + result, detectSubdir := SourceDirSubdir(result) + + // If we have a subdir from the detection, then prepend it to our + // requested subdir. + if detectSubdir != "" { + if subDir != "" { + subDir = filepath.Join(detectSubdir, subDir) + } else { + subDir = detectSubdir + } + } + if subDir != "" { + u, err := url.Parse(result) + if err != nil { + return "", fmt.Errorf("Error parsing URL: %s", err) + } + u.Path += "//" + subDir + result = u.String() + } + + // Preserve the forced getter if it exists. We try to use the + // original set force first, followed by any force set by the + // detector. + if getForce != "" { + result = fmt.Sprintf("%s::%s", getForce, result) + } else if detectForce != "" { + result = fmt.Sprintf("%s::%s", detectForce, result) + } + + return result, nil + } + + return "", fmt.Errorf("invalid source string: %s", src) +} |