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// SPDX-FileCopyrightText: 2017 Stefan Majewsky <majewsky@gmx.net>
// SPDX-License-Identifier: GPL-3.0-only
package prompt
import (
"os"
"path/filepath"
"strings"
)
//Directory contains all data about a directory that the prompt needs.
type Directory struct {
Path string
DisplayPath string //formatted for display in prompt line
TitlePath string //formatted for display in TerminalTitle
InBuildTree bool
InRepoTree bool
Repo *gitRepo
NearestAccessiblePath string
}
//CurrentDirectory prepares a Directory struct for the current working
//directory.
func CurrentDirectory() Directory {
cwd, err := os.Getwd()
if err != nil {
cwd = filepath.Clean(os.Getenv("PWD"))
}
return NewDirectory(cwd)
}
//NewDirectory prepares a Directory struct for the given path.
func NewDirectory(path string) (dir Directory) {
dir.Path = path
dir.DisplayPath = path
//check if path actually exists
dir.NearestAccessiblePath = findNearestAccessiblePath(dir.Path)
if dir.NearestAccessiblePath == dir.Path {
//marks that everything is okay existence-wise
dir.NearestAccessiblePath = ""
//display tag if below /x/build
if buildPath := os.Getenv("BUILD_ROOT"); buildPath != "" {
rel, _ := filepath.Rel(buildPath, dir.DisplayPath)
if !strings.HasPrefix(rel, "..") && rel != "." {
dir.InBuildTree = true
dir.DisplayPath = filepath.Join("/", rel)
}
}
//display tag if below /x/src
if gopath := os.Getenv("GOPATH"); gopath != "" {
repoPath := filepath.Join(gopath, "src")
rel, _ := filepath.Rel(repoPath, dir.DisplayPath)
if !strings.HasPrefix(rel, "..") && rel != "." {
dir.InRepoTree = true
dir.DisplayPath = rel
}
}
//terminal title has the same path truncations as above, but differs from
//this point
dir.TitlePath = dir.DisplayPath
//strip $HOME prefix if applicable and desirable
dir.stripHomeDirFromDisplay()
//check if we are inside a Git repository
var err error
dir.Repo, err = findRepo(dir.Path)
handleError(err)
//inside a repository, terminal title only shows the repo directory and
//below (e.g. "gofu/internal/prompt" for the current directory)
if dir.Repo != nil {
dir.TitlePath, _ = filepath.Rel(filepath.Dir(dir.Repo.RootPath), dir.Path)
}
}
return
}
//This part can benefit from a "return" in the middle, so it's in a separate function.
func (dir *Directory) stripHomeDirFromDisplay() {
if !strings.HasPrefix(dir.DisplayPath, "/") {
return
}
homePath := os.Getenv("HOME")
if homePath == "" {
return
}
rel, _ := filepath.Rel(homePath, dir.DisplayPath)
if rel == "." {
//do not display an empty DisplayPath if tags are displayed
if dir.InBuildTree || dir.InRepoTree {
return
}
dir.DisplayPath = ""
dir.TitlePath = "~"
return
}
if !strings.HasPrefix(rel, "..") {
dir.DisplayPath = rel
dir.TitlePath = "~/" + rel
}
}
func findNearestAccessiblePath(path string) string {
_, err := os.Stat(path)
if err == nil {
return path
}
return findNearestAccessiblePath(filepath.Dir(path))
}
func getDirectoryField(dir Directory, tt *TerminalTitle) string {
tt.Path = dir.TitlePath
if dir.DisplayPath == "" {
return ""
}
txt := withColor("1;36", dir.DisplayPath)
if dir.NearestAccessiblePath == "" {
//cwd accessible -> highlight path elements inside the repo (if any)
if dir.Repo != nil && dir.Repo.RootPath != dir.Path {
rel, _ := filepath.Rel(dir.Repo.RootPath, dir.Path)
if strings.HasSuffix(dir.DisplayPath, rel) {
base := strings.TrimSuffix(dir.DisplayPath, rel)
txt = withColor("0;36", base) + withColor("1;36", rel)
}
}
} else {
//cwd inaccessible -> highlight inaccessible path elements
rel, _ := filepath.Rel(dir.NearestAccessiblePath, dir.Path)
txt = withColor("1;36", dir.NearestAccessiblePath+"/") + withColor("1;31", rel)
}
//apply tags
if dir.InRepoTree {
txt = withType("repo", txt)
}
if dir.InBuildTree {
txt = withType("build", txt)
tt.Path = "build:" + tt.Path
}
return txt
}
func getDeletedMessageField(dir Directory) string {
if dir.NearestAccessiblePath == "" {
return ""
}
return withColor("1;41", "cannot stat cwd")
}
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