83 lines
2.7 KiB
Go
83 lines
2.7 KiB
Go
package parser
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import (
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"bytes"
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"strconv"
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)
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// Content of this file was copied from the package golang.org/x/mod/modfile
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// https://github.com/golang/mod/blob/v0.2.0/modfile/read.go#L877
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// Under the BSD-3-Clause licence:
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// golang.org/x/mod@v0.2.0/LICENSE
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/*
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Copyright (c) 2009 The Go Authors. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Google Inc. nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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var (
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slashSlash = []byte("//")
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moduleStr = []byte("module")
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)
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// modulePath returns the module path from the gomod file text.
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// If it cannot find a module path, it returns an empty string.
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// It is tolerant of unrelated problems in the go.mod file.
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func modulePath(mod []byte) string {
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for len(mod) > 0 {
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line := mod
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mod = nil
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if i := bytes.IndexByte(line, '\n'); i >= 0 {
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line, mod = line[:i], line[i+1:]
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}
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if i := bytes.Index(line, slashSlash); i >= 0 {
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line = line[:i]
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}
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line = bytes.TrimSpace(line)
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if !bytes.HasPrefix(line, moduleStr) {
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continue
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}
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line = line[len(moduleStr):]
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n := len(line)
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line = bytes.TrimSpace(line)
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if len(line) == n || len(line) == 0 {
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continue
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}
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if line[0] == '"' || line[0] == '`' {
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p, err := strconv.Unquote(string(line))
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if err != nil {
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return "" // malformed quoted string or multiline module path
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}
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return p
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}
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return string(line)
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}
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return "" // missing module path
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}
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