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package gitignore
import (
"io/ioutil"
"os"
"strings"
"gopkg.in/src-d/go-billy.v3"
)
const (
commentPrefix = "#"
eol = "\n"
gitDir = ".git"
gitignoreFile = ".gitignore"
)
// ReadPatterns reads gitignore patterns recursively traversing through the directory
// structure. The result is in the ascending order of priority (last higher).
func ReadPatterns(fs billy.Filesystem, path []string) (ps []Pattern, err error) {
f, err := fs.Open(fs.Join(append(path, gitignoreFile)...))
if err == nil {
defer f.Close()
if data, err := ioutil.ReadAll(f); err == nil {
for _, s := range strings.Split(string(data), eol) {
if !strings.HasPrefix(s, commentPrefix) && len(strings.TrimSpace(s)) > 0 {
ps = append(ps, ParsePattern(s, path))
}
}
}
} else if !os.IsNotExist(err) {
return nil, err
}
var fis []os.FileInfo
fis, err = fs.ReadDir(fs.Join(path...))
if err != nil {
return
}
for _, fi := range fis {
if fi.IsDir() && fi.Name() != gitDir {
var subps []Pattern
subps, err = ReadPatterns(fs, append(path, fi.Name()))
if err != nil {
return
}
if len(subps) > 0 {
ps = append(ps, subps...)
}
}
}
return
}
|
