filehandler.go

package main

import "os"

var allfiles []filedata

type filedata struct {
	fpath string
	fname string
}

//callback for walk needs to match the following:
//type WalkFunc func(path string, info os.FileInfo, err error) error
func readFile(path string, fi os.FileInfo, _ error) error {
	switch mode := fi.Mode(); {
	case mode.IsRegular():
		allfiles = extendFileDataSlice(allfiles, filedata{path, fi.Name()})
	}
	return nil
}

//ExtendEntitySlice extends a slice of type EntityData
func extendFileDataSlice(slice []filedata, fd filedata) []filedata {
	n := len(slice)
	if n == cap(slice) {
		// Slice is full; must grow.kb
		// We double its size and add 1, so if the size is zero we still grow.
		newSlice := make([]filedata, len(slice), 2*len(slice)+1)
		copy(newSlice, slice)
		slice = newSlice
	}
	slice = slice[0 : n+1]
	slice[n] = fd
	return slice
}