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package git
import (
"bytes"
"io"
"os"
"strings"
"gopkg.in/src-d/go-git.v4/core"
)
// File represents git file objects.
type File struct {
Name string
Mode os.FileMode
Blob
}
func newFile(name string, m os.FileMode, b *Blob) *File {
return &File{Name: name, Mode: m, Blob: *b}
}
// Contents returns the contents of a file as a string.
func (f *File) Contents() (content string, err error) {
reader, err := f.Reader()
if err != nil {
return "", err
}
defer checkClose(reader, &err)
buf := new(bytes.Buffer)
buf.ReadFrom(reader)
return buf.String(), nil
}
// Lines returns a slice of lines from the contents of a file, stripping
// all end of line characters. If the last line is empty (does not end
// in an end of line), it is also stripped.
func (f *File) Lines() ([]string, error) {
content, err := f.Contents()
if err != nil {
return nil, err
}
splits := strings.Split(content, "\n")
// remove the last line if it is empty
if splits[len(splits)-1] == "" {
return splits[:len(splits)-1], nil
}
return splits, nil
}
type FileIter struct {
w TreeWalker
}
func NewFileIter(r *Repository, t *Tree) *FileIter {
return &FileIter{w: *NewTreeWalker(r, t)}
}
func (iter *FileIter) Next() (*File, error) {
for {
name, entry, obj, err := iter.w.Next()
if err != nil {
return nil, err
}
if blob, ok := obj.(*Blob); ok {
return newFile(name, entry.Mode, blob), nil
}
}
}
// ForEach call the cb function for each file contained on this iter until
// an error happends or the end of the iter is reached. If core.ErrStop is sent
// the iteration is stop but no error is returned
func (iter *FileIter) ForEach(cb func(*File) error) error {
i := &FileIter{w: *NewTreeWalker(iter.w.r, iter.w.t)}
defer i.Close()
for {
f, err := i.Next()
if err != nil {
if err == io.EOF {
return nil
}
return err
}
if err := cb(f); err != nil {
if err == core.ErrStop {
return nil
}
return err
}
}
}
func (iter *FileIter) Close() {
iter.w.Close()
}
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