stdlib.go

package stdlib

import (
	"fmt"
	"os"
	"path/filepath"
	"strings"
)

const (
	PS = string(os.PathSeparator)
)

// FileExtChecker A store for file extensions to exclude and included.
//
// Deprecated This was used long ago but no longer needed and should be removed.
// Originally written for tmptoapp now named tmplpress.
type FileExtChecker struct {
	excludes *[]string
	includes *[]string
}

// NewFileExtChecker Initialize a new FileExtChecker instance.
// Deprecated This was used long ago but no longer needed and should be removed.
// Originally written for tmptoapp now named tmplpress.
func NewFileExtChecker(el, in *[]string) (*FileExtChecker, error) {
	var err error

	if el == nil && in == nil {
		return nil, fmt.Errorf("you did not add provide any file extensions to include or exclude")
	}

	if el == nil {
		el = &[]string{}
	}

	if in == nil {
		in = &[]string{}
	}

	fce := FileExtChecker{
		excludes: el,
		includes: in,
	}

	return &fce, err
}

// IsValid Returns true for files that match allowed or excluded extensions.
// Passing a full path only checks the basename.
// Default to include all files.
// If a file has no extension, then use its basename.
func (fec *FileExtChecker) IsValid(file string) bool {
	basename := filepath.Base(file) // account for hidden directories
	ext := strings.Trim(filepath.Ext(basename), ".")
	// when there is no extension (unix/linux/mac) use the basename
	if len(ext) == 0 && len(basename) > 1 {
		ext = basename
	}

	if ext != "" {
		for _, t := range *fec.excludes {
			if t == ext {
				return false
			}
		}
		for _, t := range *fec.includes {
			if t == ext {
				return true
			}
		}
	}

	return true
}