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proj.go
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proj.go
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/*
* Copyright (c) 2021 The GoPlus Authors (goplus.org). All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package gopprojs
import (
"errors"
"path/filepath"
"syscall"
)
// -----------------------------------------------------------------------------
type Proj = interface {
projObj()
}
type FilesProj struct {
Files []string
}
type PkgPathProj struct {
Path string
}
type DirProj struct {
Dir string
}
func (p *FilesProj) projObj() {}
func (p *PkgPathProj) projObj() {}
func (p *DirProj) projObj() {}
// -----------------------------------------------------------------------------
func ParseOne(args ...string) (proj Proj, next []string, err error) {
if len(args) == 0 {
return nil, nil, syscall.ENOENT
}
arg := args[0]
if isFile(arg) {
n := 1
for n < len(args) && isFile(args[n]) {
n++
}
return &FilesProj{Files: args[:n]}, args[n:], nil
}
if isLocal(arg) {
return &DirProj{Dir: arg}, args[1:], nil
}
return &PkgPathProj{Path: arg}, args[1:], nil
}
func isFile(fname string) bool {
switch filepath.Ext(fname) {
case ".gop", ".go":
return true
}
return false
}
func isLocal(ns string) bool {
if len(ns) > 0 {
switch c := ns[0]; c {
case '/', '\\', '.':
return true
default:
return len(ns) >= 2 && ns[1] == ':' && ('A' <= c && c <= 'Z' || 'a' <= c && c <= 'z')
}
}
return false
}
// -----------------------------------------------------------------------------
func ParseAll(args ...string) (projs []Proj, err error) {
var hasFiles, hasNotFiles bool
for {
proj, next, e := ParseOne(args...)
if e != nil {
if hasFiles && hasNotFiles {
return nil, ErrMixedFilesProj
}
return
}
if _, ok := proj.(*FilesProj); ok {
hasFiles = true
} else {
hasNotFiles = true
}
projs = append(projs, proj)
args = next
}
}
var (
ErrMixedFilesProj = errors.New("mixed files project")
)
// -----------------------------------------------------------------------------