vise/go/resource/fs.go

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package resource
import (
"context"
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"fmt"
"io/ioutil"
"log"
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"path"
"path/filepath"
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"strings"
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)
type FsResource struct {
MenuResource
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Path string
fns map[string]EntryFunc
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}
func NewFsResource(path string) (FsResource) {
absPath, err := filepath.Abs(path)
if err != nil {
panic(err)
}
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return FsResource{
Path: absPath,
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}
}
func(fs FsResource) GetTemplate(sym string) (string, error) {
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fp := path.Join(fs.Path, sym)
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r, err := ioutil.ReadFile(fp)
s := string(r)
return strings.TrimSpace(s), err
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}
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func(fs FsResource) GetCode(sym string) ([]byte, error) {
fb := sym + ".bin"
fp := path.Join(fs.Path, fb)
return ioutil.ReadFile(fp)
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}
func(fs FsResource) FuncFor(sym string) (EntryFunc, error) {
fn, ok := fs.fns[sym]
if ok {
return fn, nil
}
_, err := fs.getFuncNoCtx(sym)
if err != nil {
return nil, fmt.Errorf("unknown sym: %s", sym)
}
return fs.getFunc, nil
}
func(fs FsResource) String() string {
return fmt.Sprintf("fs resource at path: %s", fs.Path)
}
func(fs FsResource) getFunc(sym string, ctx context.Context) (string, error) {
return fs.getFuncNoCtx(sym)
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}
func(fs FsResource) getFuncNoCtx(sym string) (string, error) {
fb := sym + ".txt"
fp := path.Join(fs.Path, fb)
log.Printf("getfunc search dir %s %s for %s", fs.Path, fp, sym)
r, err := ioutil.ReadFile(fp)
if err != nil {
return "", fmt.Errorf("failed getting data for sym '%s': %v", sym, err)
}
s := string(r)
return strings.TrimSpace(s), nil
}