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Make LazyFileReader use the Afero source fs

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Fixes #2317
This commit is contained in:
Bjørn Erik Pedersen 2016-07-30 15:14:41 +02:00
parent 9489272681
commit a0859dc672
4 changed files with 30 additions and 22 deletions
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2
hugolib/site.go
View file

@ -836,7 +836,7 @@ func (s *Site) reReadFile(absFilePath string) (*source.File, error) {
jww.INFO.Println("rereading", absFilePath)
var file *source.File
reader, err := source.NewLazyFileReader(absFilePath)
reader, err := source.NewLazyFileReader(hugofs.Source(), absFilePath)
if err != nil {
return nil, err
}

5
source/filesystem.go
View file

@ -14,13 +14,14 @@
package source
import (
"github.com/spf13/hugo/hugofs"
"io"
"os"
"path/filepath"
"regexp"
"strings"
"github.com/spf13/hugo/hugofs"
"github.com/spf13/viper"
"github.com/spf13/hugo/helpers"
@ -84,7 +85,7 @@ func (f *Filesystem) captureFiles() {
return err
}
if b {
rd, err := NewLazyFileReader(filePath)
rd, err := NewLazyFileReader(hugofs.Source(), filePath)
if err != nil {
return err
}

17
source/lazy_file_reader.go
View file

@ -19,14 +19,15 @@ import (
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"github.com/spf13/afero"
)
// LazyFileReader is an io.Reader implementation to postpone reading the file
// contents until it is really needed. It keeps filename and file contents once
// it is read.
type LazyFileReader struct {
fs afero.Fs
filename string
contents *bytes.Reader
pos int64
@ -35,13 +36,13 @@ type LazyFileReader struct {
// NewLazyFileReader creates and initializes a new LazyFileReader of filename.
// It checks whether the file can be opened. If it fails, it returns nil and an
// error.
func NewLazyFileReader(filename string) (*LazyFileReader, error) {
f, err := os.Open(filename)
func NewLazyFileReader(fs afero.Fs, filename string) (*LazyFileReader, error) {
f, err := fs.Open(filename)
if err != nil {
return nil, err
}
defer f.Close()
return &LazyFileReader{filename: filename, contents: nil, pos: 0}, nil
return &LazyFileReader{fs: fs, filename: filename, contents: nil, pos: 0}, nil
}
// Filename returns a file name which LazyFileReader keeps
@ -55,7 +56,7 @@ func (l *LazyFileReader) Filename() string {
// the file.
func (l *LazyFileReader) Read(p []byte) (n int, err error) {
if l.contents == nil {
b, err := ioutil.ReadFile(l.filename)
b, err := afero.ReadFile(l.fs, l.filename)
if err != nil {
return 0, fmt.Errorf("failed to read content from %s: %s", l.filename, err.Error())
}
@ -80,7 +81,7 @@ func (l *LazyFileReader) Seek(offset int64, whence int) (pos int64, err error) {
case 1:
pos = l.pos + offset
case 2:
fi, err := os.Stat(l.filename)
fi, err := l.fs.Stat(l.filename)
if err != nil {
return 0, fmt.Errorf("failed to get %q info: %s", l.filename, err.Error())
}
@ -115,7 +116,7 @@ func (l *LazyFileReader) WriteTo(w io.Writer) (n int64, err error) {
l.pos += n
return n, err
}
f, err := os.Open(l.filename)
f, err := l.fs.Open(l.filename)
if err != nil {
return 0, fmt.Errorf("failed to open %s to read content: %s", l.filename, err.Error())
}

28
source/lazy_file_reader_test.go
View file

@ -19,25 +19,29 @@ import (
"io/ioutil"
"os"
"testing"
"github.com/spf13/afero"
)
func TestNewLazyFileReader(t *testing.T) {
fs := afero.NewOsFs()
filename := "itdoesnotexistfile"
_, err := NewLazyFileReader(filename)
_, err := NewLazyFileReader(fs, filename)
if err == nil {
t.Errorf("NewLazyFileReader %s: error expected but no error is returned", filename)
}
filename = "lazy_file_reader_test.go"
_, err = NewLazyFileReader(filename)
_, err = NewLazyFileReader(fs, filename)
if err != nil {
t.Errorf("NewLazyFileReader %s: %v", filename, err)
}
}
func TestFilename(t *testing.T) {
fs := afero.NewOsFs()
filename := "lazy_file_reader_test.go"
rd, err := NewLazyFileReader(filename)
rd, err := NewLazyFileReader(fs, filename)
if err != nil {
t.Fatalf("NewLazyFileReader %s: %v", filename, err)
}
@ -47,18 +51,19 @@ func TestFilename(t *testing.T) {
}
func TestRead(t *testing.T) {
fs := afero.NewOsFs()
filename := "lazy_file_reader_test.go"
fi, err := os.Stat(filename)
fi, err := fs.Stat(filename)
if err != nil {
t.Fatalf("os.Stat: %v", err)
}
b, err := ioutil.ReadFile(filename)
b, err := afero.ReadFile(fs, filename)
if err != nil {
t.Fatalf("ioutil.ReadFile: %v", err)
}
rd, err := NewLazyFileReader(filename)
rd, err := NewLazyFileReader(fs, filename)
if err != nil {
t.Fatalf("NewLazyFileReader %s: %v", filename, err)
}
@ -92,9 +97,9 @@ func TestSeek(t *testing.T) {
moveto int64
expected []byte
}
fs := afero.NewOsFs()
filename := "lazy_file_reader_test.go"
b, err := ioutil.ReadFile(filename)
b, err := afero.ReadFile(fs, filename)
if err != nil {
t.Fatalf("ioutil.ReadFile: %v", err)
}
@ -108,7 +113,7 @@ func TestSeek(t *testing.T) {
{seek: 3, expected: nil},
{seek: os.SEEK_SET, offset: -1, expected: nil},
} {
rd, err := NewLazyFileReader(filename)
rd, err := NewLazyFileReader(fs, filename)
if err != nil {
t.Errorf("[%d] NewLazyFileReader %s: %v", i, filename, err)
continue
@ -140,7 +145,7 @@ func TestSeek(t *testing.T) {
}
// cache case
rd, err := NewLazyFileReader(filename)
rd, err := NewLazyFileReader(fs, filename)
if err != nil {
t.Fatalf("NewLazyFileReader %s: %v", filename, err)
}
@ -185,6 +190,7 @@ func TestSeek(t *testing.T) {
}
func TestWriteTo(t *testing.T) {
fs := afero.NewOsFs()
filename := "lazy_file_reader_test.go"
fi, err := os.Stat(filename)
if err != nil {
@ -196,7 +202,7 @@ func TestWriteTo(t *testing.T) {
t.Fatalf("ioutil.ReadFile: %v", err)
}
rd, err := NewLazyFileReader(filename)
rd, err := NewLazyFileReader(fs, filename)
if err != nil {
t.Fatalf("NewLazyFileReader %s: %v", filename, err)
}