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package getter
import (
"fmt"
"path/filepath"
"strings"
)
// SourceDirSubdir takes a source URL and returns a tuple of the URL without
// the subdir and the subdir.
//
// ex:
// dom.com/path/?q=p => dom.com/path/?q=p, ""
// proto://dom.com/path//*?q=p => proto://dom.com/path?q=p, "*"
// proto://dom.com/path//path2?q=p => proto://dom.com/path?q=p, "path2"
//
func SourceDirSubdir(src string) (string, string) {
// URL might contains another url in query parameters
stop := len(src)
if idx := strings.Index(src, "?"); idx > -1 {
stop = idx
}
// Calculate an offset to avoid accidentally marking the scheme
// as the dir.
var offset int
if idx := strings.Index(src[:stop], "://"); idx > -1 {
offset = idx + 3
}
// First see if we even have an explicit subdir
idx := strings.Index(src[offset:stop], "//")
if idx == -1 {
return src, ""
}
idx += offset
subdir := src[idx+2:]
src = src[:idx]
// Next, check if we have query parameters and push them onto the
// URL.
if idx = strings.Index(subdir, "?"); idx > -1 {
query := subdir[idx:]
subdir = subdir[:idx]
src += query
}
return src, subdir
}
// SubdirGlob returns the actual subdir with globbing processed.
//
// dst should be a destination directory that is already populated (the
// download is complete) and subDir should be the set subDir. If subDir
// is an empty string, this returns an empty string.
//
// The returned path is the full absolute path.
func SubdirGlob(dst, subDir string) (string, error) {
matches, err := filepath.Glob(filepath.Join(dst, subDir))
if err != nil {
return "", err
}
if len(matches) == 0 {
return "", fmt.Errorf("subdir %q not found", subDir)
}
if len(matches) > 1 {
return "", fmt.Errorf("subdir %q matches multiple paths", subDir)
}
return matches[0], nil
}
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