71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
/*
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Copyright (C) 2023 Brian Evans (aka sloum). All rights reserved.
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This source code is available under the terms of the ffsl, or,
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Floodgap Free Software License. A copy of the license has been
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provided as the file 'LICENSE' in the same folder as this source
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code file. If for some reason it is not present, you can find the
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terms of version 1 of the FFSL at the following URL:
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https://www.floodgap.com/software/ffsl/license.html
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*/
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package main
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import (
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"fmt"
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"io/ioutil"
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"os"
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"os/user"
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"path/filepath"
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"strings"
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)
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func readFile(path string) (string, error) {
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b, err := ioutil.ReadFile(ExpandedAbsFilepath(path))
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if err != nil {
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return "", fmt.Errorf("Unable to open file %s\n", path)
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}
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return string(b), nil
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}
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func ExpandedAbsFilepath(p string) string {
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if strings.HasPrefix(p, "~") {
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if p == "~" || strings.HasPrefix(p, "~/") {
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homedir, _ := os.UserHomeDir()
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if len(p) <= 2 {
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p = homedir
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} else if len(p) > 2 {
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if p[1] == '/' {
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p = filepath.Join(homedir, p[2:])
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} else {
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p = filepath.Join("/home", p[1:])
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}
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}
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} else {
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i := strings.IndexRune(p, '/')
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var u string
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var remainder string
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if i < 0 {
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u = p[1:]
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remainder = ""
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} else {
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u = p[1:i]
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remainder = p[i:]
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}
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usr, err := user.Lookup(u)
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if err != nil {
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p = filepath.Join("/home", u, remainder)
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} else {
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p = filepath.Join(usr.HomeDir, remainder)
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}
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}
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} else if !strings.HasPrefix(p, "/") {
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wd, _ := os.Getwd()
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p = filepath.Join(wd, p)
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}
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path, _ := filepath.Abs(p)
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return path
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}
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