fabf1c9334
I had a spare fifteen minutes and decided that I should tidy up my monorepo. The work of tidying up is not finished; this is a small step in the right direction. TL;DR - Created a tools directory - Created a scratch directory (see README.md for more information) - Added README.md to third_party - Renamed delete_dotfile_symlinks -> symlinkManager - Packaged symlinkManager as an executable symlink-mgr using buildGo
131 lines
2.9 KiB
Go
131 lines
2.9 KiB
Go
// Some utility functions to tidy up my Golang.
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package utils
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import (
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"net/http/httputil"
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"os"
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"os/user"
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"path/filepath"
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)
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// Return the absolute path to the current uesr's home directory.
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func HomeDir() string {
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user, err := user.Current()
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if err != nil {
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log.Fatal(err)
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}
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return user.HomeDir
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}
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// Returns true if `info` is a symlink.
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func IsSymlink(info os.FileMode) bool {
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return info&os.ModeSymlink != 0
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}
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// Return true if `path` exists and false otherwise.
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func FileExists(path string) bool {
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if _, err := os.Stat(path); os.IsNotExist(err) {
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return false
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} else {
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return true
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}
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}
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// Return the absolute file path of `file` using the following resolution
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// strategy:
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// - Traverse and search upwards until you reach the user's home directory
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// - Return the first path in `backupPaths` that exists
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// - Fail
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func Resolve(fileName string, backupPaths []string) string {
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// TODO(wpcarro): Drop hardcoding when whoami behaves as expected.
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boundary := "/home"
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cwd := "."
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files, _ := ioutil.ReadDir(cwd)
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for {
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fullCwd, _ := filepath.Abs(cwd)
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if fullCwd == boundary {
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break
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}
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for _, file := range files {
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if file.Name() == fileName {
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path, _ := filepath.Abs(cwd + "/" + file.Name())
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return path
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}
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}
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cwd += "/.."
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files, _ = ioutil.ReadDir(cwd)
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}
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// TODO(wpcarro): Support expanding these paths to allow the consumer to
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// pass in relative paths, and paths with "~" in them.
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for _, backup := range backupPaths {
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if FileExists(backup) {
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return backup
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}
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}
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log.Fatal("Cannot find a run.json to use.")
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// This code should be unreachable.
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return ""
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}
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// Call log.Fatal with `err` when it's not nil.
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func FailOn(err error) {
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if err != nil {
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log.Fatal(err)
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}
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}
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// Prints the verbose form of an HTTP request.
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func DebugRequest(req *http.Request) {
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bytes, _ := httputil.DumpRequest(req, true)
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fmt.Println(string(bytes))
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}
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// Prints out the verbose form of an HTTP response.
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func DebugResponse(res *http.Response) {
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bytes, _ := httputil.DumpResponse(res, true)
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fmt.Println(string(bytes))
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}
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// Make a simple GET request to `url`. Fail if anything returns an error. I'd
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// like to accumulate a library of these, so that I can write scrappy Go
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// quickly. For now, this function just returns the body of the response back as
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// a string.
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func SimpleGet(url string, headers map[string]string, debug bool) string {
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client := &http.Client{}
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req, err := http.NewRequest("GET", url, nil)
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if err != nil {
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log.Fatal(err)
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}
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for k, v := range headers {
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req.Header.Add(k, v)
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}
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res, err := client.Do(req)
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if err != nil {
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log.Fatal(err)
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}
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defer res.Body.Close()
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if debug {
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DebugRequest(req)
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DebugResponse(res)
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}
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if res.StatusCode == http.StatusOK {
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bytes, err := ioutil.ReadAll(res.Body)
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if err != nil {
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log.Fatal(err)
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}
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return string(bytes)
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} else {
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log.Println(res)
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log.Fatalf("HTTP status code of response not OK: %v\n", res.StatusCode)
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return ""
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}
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}
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