github.com/cloudwego/kitex@v0.9.0/tool/internal_pkg/pluginmode/protoc/util.go (about)

     1  // Copyright 2021 CloudWeGo Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //   http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package protoc
    16  
    17  import (
    18  	"go/token"
    19  	"strings"
    20  	"unicode"
    21  
    22  	"github.com/cloudwego/kitex/tool/internal_pkg/util"
    23  )
    24  
    25  func goSanitized(s string) string {
    26  	// replace invalid characters with '_'
    27  	s = strings.Map(func(r rune) rune {
    28  		if !unicode.IsLetter(r) && !unicode.IsDigit(r) {
    29  			return '_'
    30  		}
    31  		return r
    32  	}, s)
    33  
    34  	// avoid invalid identifier
    35  	if !token.IsIdentifier(s) {
    36  		return "_" + s
    37  	}
    38  	return s
    39  }
    40  
    41  type pathElements struct {
    42  	module string // module name
    43  	prefix string // prefix of import path for generated codes
    44  }
    45  
    46  func (p *pathElements) getImportPath(pkg string) (path string, ok bool) {
    47  	parts := strings.Split(pkg, "/")
    48  	if len(parts) == 0 {
    49  		// malformed import path
    50  		return "", false
    51  	}
    52  
    53  	if strings.HasPrefix(pkg, p.prefix) {
    54  		return pkg, true
    55  	}
    56  	if strings.Contains(parts[0], ".") || (p.module != "" && strings.HasPrefix(pkg, p.module)) {
    57  		// already a complete import path, but outside the target path
    58  		return "", false
    59  	}
    60  	// incomplete import path
    61  	return util.JoinPath(p.prefix, pkg), true
    62  }