github.com/gitbundle/modules@v0.0.0-20231025071548-85b91c5c3b01/packages/conan/conanfile_parser.go (about)

     1  // Copyright 2023 The GitBundle Inc. All rights reserved.
     2  // Copyright 2017 The Gitea Authors. All rights reserved.
     3  // Use of this source code is governed by a MIT-style
     4  // license that can be found in the LICENSE file.
     5  
     6  package conan
     7  
     8  import (
     9  	"io"
    10  	"regexp"
    11  	"strings"
    12  )
    13  
    14  var (
    15  	patternAuthor      = compilePattern("author")
    16  	patternHomepage    = compilePattern("homepage")
    17  	patternURL         = compilePattern("url")
    18  	patternLicense     = compilePattern("license")
    19  	patternDescription = compilePattern("description")
    20  	patternTopics      = regexp.MustCompile(`(?im)^\s*topics\s*=\s*\((.+)\)`)
    21  	patternTopicList   = regexp.MustCompile(`\s*['"](.+?)['"]\s*,?`)
    22  )
    23  
    24  func compilePattern(name string) *regexp.Regexp {
    25  	return regexp.MustCompile(`(?im)^\s*` + name + `\s*=\s*['"\(](.+)['"\)]`)
    26  }
    27  
    28  func ParseConanfile(r io.Reader) (*Metadata, error) {
    29  	buf, err := io.ReadAll(io.LimitReader(r, 1<<20))
    30  	if err != nil {
    31  		return nil, err
    32  	}
    33  
    34  	metadata := &Metadata{}
    35  
    36  	m := patternAuthor.FindSubmatch(buf)
    37  	if len(m) > 1 && len(m[1]) > 0 {
    38  		metadata.Author = string(m[1])
    39  	}
    40  	m = patternHomepage.FindSubmatch(buf)
    41  	if len(m) > 1 && len(m[1]) > 0 {
    42  		metadata.ProjectURL = string(m[1])
    43  	}
    44  	m = patternURL.FindSubmatch(buf)
    45  	if len(m) > 1 && len(m[1]) > 0 {
    46  		metadata.RepositoryURL = string(m[1])
    47  	}
    48  	m = patternLicense.FindSubmatch(buf)
    49  	if len(m) > 1 && len(m[1]) > 0 {
    50  		metadata.License = strings.ReplaceAll(strings.ReplaceAll(string(m[1]), "'", ""), "\"", "")
    51  	}
    52  	m = patternDescription.FindSubmatch(buf)
    53  	if len(m) > 1 && len(m[1]) > 0 {
    54  		metadata.Description = string(m[1])
    55  	}
    56  	m = patternTopics.FindSubmatch(buf)
    57  	if len(m) > 1 && len(m[1]) > 0 {
    58  		m2 := patternTopicList.FindAllSubmatch(m[1], -1)
    59  		if len(m2) > 0 {
    60  			metadata.Keywords = make([]string, 0, len(m2))
    61  			for _, g := range m2 {
    62  				if len(g) > 1 {
    63  					metadata.Keywords = append(metadata.Keywords, string(g[1]))
    64  				}
    65  			}
    66  		}
    67  	}
    68  	return metadata, nil
    69  }