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// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package conan
import (
"io"
"regexp"
"strings"
)
var (
patternAuthor = compilePattern("author")
patternHomepage = compilePattern("homepage")
patternURL = compilePattern("url")
patternLicense = compilePattern("license")
patternDescription = compilePattern("description")
patternTopics = regexp.MustCompile(`(?im)^\s*topics\s*=\s*\((.+)\)`)
patternTopicList = regexp.MustCompile(`\s*['"](.+?)['"]\s*,?`)
)
func compilePattern(name string) *regexp.Regexp {
return regexp.MustCompile(`(?im)^\s*` + name + `\s*=\s*['"\(](.+)['"\)]`)
}
func ParseConanfile(r io.Reader) (*Metadata, error) {
buf, err := io.ReadAll(io.LimitReader(r, 1<<20))
if err != nil {
return nil, err
}
metadata := &Metadata{}
m := patternAuthor.FindSubmatch(buf)
if len(m) > 1 && len(m[1]) > 0 {
metadata.Author = string(m[1])
}
m = patternHomepage.FindSubmatch(buf)
if len(m) > 1 && len(m[1]) > 0 {
metadata.ProjectURL = string(m[1])
}
m = patternURL.FindSubmatch(buf)
if len(m) > 1 && len(m[1]) > 0 {
metadata.RepositoryURL = string(m[1])
}
m = patternLicense.FindSubmatch(buf)
if len(m) > 1 && len(m[1]) > 0 {
metadata.License = strings.ReplaceAll(strings.ReplaceAll(string(m[1]), "'", ""), "\"", "")
}
m = patternDescription.FindSubmatch(buf)
if len(m) > 1 && len(m[1]) > 0 {
metadata.Description = string(m[1])
}
m = patternTopics.FindSubmatch(buf)
if len(m) > 1 && len(m[1]) > 0 {
m2 := patternTopicList.FindAllSubmatch(m[1], -1)
if len(m2) > 0 {
metadata.Keywords = make([]string, 0, len(m2))
for _, g := range m2 {
if len(g) > 1 {
metadata.Keywords = append(metadata.Keywords, string(g[1]))
}
}
}
}
return metadata, nil
}
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