goldsmith/goldsmith.go

141 lines
3.1 KiB
Go

/*
* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
* Author: Alex Yatskov <alex@foosoft.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package goldsmith
import (
"bytes"
"errors"
"fmt"
"io"
"os"
"time"
)
type Goldsmith interface {
Chain(p Plugin) Goldsmith
FilterPush(f Filter) Goldsmith
FilterPop() Goldsmith
End(dstDir string) []error
}
func Begin(srcDir string) Goldsmith {
gs := &goldsmith{srcDir: srcDir, refs: make(map[string]bool)}
gs.Chain(new(loader))
return gs
}
type File interface {
Path() string
Name() string
Dir() string
Ext() string
Size() int64
ModTime() time.Time
Value(key string) (interface{}, bool)
SetValue(key string, value interface{}) bool
InheritValues(src File)
Read(p []byte) (int, error)
WriteTo(w io.Writer) (int64, error)
Seek(offset int64, whence int) (int64, error)
}
func NewFileFromData(path string, data []byte) File {
return &file{
path: path,
Meta: make(map[string]interface{}),
reader: bytes.NewReader(data),
size: int64(len(data)),
modTime: time.Now(),
}
}
func NewFileFromAsset(path, asset string) (File, error) {
info, err := os.Stat(asset)
if err != nil {
return nil, err
}
if info.IsDir() {
return nil, errors.New("assets must be files")
}
f := &file{
path: path,
Meta: make(map[string]interface{}),
size: info.Size(),
modTime: info.ModTime(),
asset: asset,
}
return f, nil
}
type Context interface {
DispatchFile(f File)
SrcDir() string
DstDir() string
}
type Error struct {
Name string
Path string
Err error
}
func (e Error) Error() string {
var path string
if len(e.Path) > 0 {
path = "@" + e.Path
}
return fmt.Sprintf("[%s%s]: %s", e.Name, path, e.Err.Error())
}
type Initializer interface {
Initialize(ctx Context) ([]Filter, error)
}
type Processor interface {
Process(ctx Context, f File) error
}
type Finalizer interface {
Finalize(ctx Context) error
}
type Component interface {
Name() string
}
type Filter interface {
Component
Accept(ctx Context, f File) (bool, error)
}
type Plugin interface {
Component
}