48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// TODO: Figure out what gopkg.in should do.
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package modfile
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import "strings"
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// ParseGopkgIn splits gopkg.in import paths into their constituent parts
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func ParseGopkgIn(path string) (root, repo, major, subdir string, ok bool) {
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if !strings.HasPrefix(path, "gopkg.in/") {
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return
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}
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f := strings.Split(path, "/")
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if len(f) >= 2 {
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if elem, v, ok := dotV(f[1]); ok {
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root = strings.Join(f[:2], "/")
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repo = "github.com/go-" + elem + "/" + elem
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major = v
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subdir = strings.Join(f[2:], "/")
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return root, repo, major, subdir, true
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}
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}
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if len(f) >= 3 {
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if elem, v, ok := dotV(f[2]); ok {
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root = strings.Join(f[:3], "/")
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repo = "github.com/" + f[1] + "/" + elem
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major = v
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subdir = strings.Join(f[3:], "/")
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return root, repo, major, subdir, true
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}
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}
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return
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}
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func dotV(name string) (elem, v string, ok bool) {
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i := len(name) - 1
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for i >= 0 && '0' <= name[i] && name[i] <= '9' {
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i--
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}
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if i <= 2 || i+1 >= len(name) || name[i-1] != '.' || name[i] != 'v' || name[i+1] == '0' && len(name) != i+2 {
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return "", "", false
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}
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return name[:i-1], name[i:], true
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}
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