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|
package main
import (
"log"
"os"
"path/filepath"
"strings"
"github.com/gdamore/tcell/v2"
)
type iconDef struct {
icon string
hasStyle bool
style tcell.Style
}
type iconMap struct {
icons map[string]iconDef
useLinkTarget bool
}
func iconWithoutStyle(icon string) iconDef {
return iconDef{icon, false, tcell.StyleDefault}
}
func iconWithStyle(icon string, style tcell.Style) iconDef {
return iconDef{icon, true, style}
}
func parseIcons() iconMap {
im := iconMap{
icons: make(map[string]iconDef),
useLinkTarget: false,
}
defaultIcons := []string{
"ln=l",
"or=l",
"tw=t",
"ow=d",
"st=t",
"di=d",
"pi=p",
"so=s",
"bd=b",
"cd=c",
"su=u",
"sg=g",
"ex=x",
"fi=-",
}
im.parseEnv(strings.Join(defaultIcons, ":"))
if env := os.Getenv("LF_ICONS"); env != "" {
im.parseEnv(env)
}
for _, path := range gIconsPaths {
if _, err := os.Stat(path); !os.IsNotExist(err) {
im.parseFile(path)
}
}
return im
}
func (im *iconMap) parseFile(path string) {
log.Printf("reading file: %s", path)
f, err := os.Open(path)
if err != nil {
log.Printf("opening icons file: %s", err)
return
}
defer f.Close()
arrs, err := readArrays(f, 1, 3)
if err != nil {
log.Printf("reading icons file: %s", err)
return
}
for _, arr := range arrs {
im.parseArray(arr)
}
}
func (im *iconMap) parseEnv(env string) {
for _, entry := range strings.Split(env, ":") {
if entry == "" {
continue
}
pair := strings.Split(entry, "=")
if len(pair) != 2 {
log.Printf("invalid $LF_ICONS entry: %s", entry)
return
}
im.parseArray(pair)
}
}
func (im *iconMap) parseArray(arr []string) {
key := replaceTilde(arr[0])
if filepath.IsAbs(key) {
key = filepath.Clean(key)
}
switch len(arr) {
case 1:
delete(im.icons, key)
case 2:
icon := arr[1]
if key == "ln" && icon == "target" {
im.useLinkTarget = true
} else {
im.icons[key] = iconWithoutStyle(icon)
}
case 3:
icon, color := arr[1], arr[2]
im.icons[key] = iconWithStyle(icon, applyAnsiCodes(color, tcell.StyleDefault))
}
}
func (im iconMap) get(f *file) iconDef {
if val, ok := im.icons[f.path]; ok {
return val
}
if f.IsDir() {
if val, ok := im.icons[f.Name()+"/"]; ok {
return val
}
}
var key string
switch {
case f.linkState == working && !im.useLinkTarget:
key = "ln"
case f.linkState == broken:
key = "or"
case f.IsDir() && f.Mode()&os.ModeSticky != 0 && f.Mode()&0o002 != 0:
key = "tw"
case f.IsDir() && f.Mode()&0o002 != 0:
key = "ow"
case f.IsDir() && f.Mode()&os.ModeSticky != 0:
key = "st"
case f.IsDir():
key = "di"
case f.Mode()&os.ModeNamedPipe != 0:
key = "pi"
case f.Mode()&os.ModeSocket != 0:
key = "so"
case f.Mode()&os.ModeCharDevice != 0:
key = "cd"
case f.Mode()&os.ModeDevice != 0:
key = "bd"
case f.Mode()&os.ModeSetuid != 0:
key = "su"
case f.Mode()&os.ModeSetgid != 0:
key = "sg"
case f.Mode()&0o111 != 0:
key = "ex"
}
if val, ok := im.icons[key]; ok {
return val
}
if val, ok := im.icons[f.Name()+"*"]; ok {
return val
}
if val, ok := im.icons["*"+f.Name()]; ok {
return val
}
if val, ok := im.icons[filepath.Base(f.Name())+".*"]; ok {
return val
}
if val, ok := im.icons["*"+strings.ToLower(f.ext)]; ok {
return val
}
if val, ok := im.icons["fi"]; ok {
return val
}
return iconWithoutStyle(" ")
}
|
