fix: #22

lib/CharsetDetect.ahk

@@ -0,0 +1,150 @@
+class TextEncodingDetect {
+    UTF8Bom := [0xEF, 0xBB, 0xBF]
+    UTF16LeBom := [0xFF, 0xFE]
+    UTF16BeBom := [0xFE, 0xFF]
+    UTF32LeBom := [0xFF, 0xFE, 0x00, 0x00]
+
+    DetectEncoding(fileName) {
+        if !FileExist(fileName) {
+            MsgBox("File not found")
+            return ""
+        }
+
+        buffer := FileRead(fileName, "RAW")
+        size := buffer.Size
+
+        encodingType := this.DetectWithBom(buffer)
+        if (encodingType == "Utf8Bom") {
+            encodingType := "UTF-8"
+        } else if (encodingType == "UnicodeBom") {
+            encodingType := "UTF-16"
+        }
+
+        if encodingType != "None" {
+            return encodingType
+        }
+
+        encodingType := this.DetectWithoutBom(buffer, size)
+        if (encodingType == "GBK" ||
+            encodingType == "Ansi") {
+            ; CP0 是 系统默认编码
+            encodingType := "CP0"
+        }
+
+        return encodingType != "None" ? encodingType : "None"
+    }
+
+    DetectWithBom(buffer) {
+        if (buffer.Size >= 3 && this.ByteAt(buffer, 0) = this.UTF8Bom[1] && this.ByteAt(buffer, 1) = this.UTF8Bom[2] && this.ByteAt(buffer, 2) = this.UTF8Bom[3]) {
+            return "Utf8Bom"
+        }
+
+        if (buffer.Size >= 2 && this.ByteAt(buffer, 0) = this.UTF16LeBom[1] && this.ByteAt(buffer, 1) = this.UTF16LeBom[2]) {
+            return "UnicodeBom"
+        }
+
+        if (buffer.Size >= 2 && this.ByteAt(buffer, 0) = this.UTF16BeBom[1] && this.ByteAt(buffer, 1) = this.UTF16BeBom[2]) {
+            if (buffer.Size >= 4 && this.ByteAt(buffer, 2) = this.UTF32LeBom[3] && this.ByteAt(buffer, 3) = this.UTF32LeBom[4]) {
+                return "Utf32Bom"
+            }
+            return "BigEndianUnicodeBom"
+        }
+
+        return "None"
+    }
+
+    DetectWithoutBom(buffer, size) {
+        ; Check for UTF-8 encoding
+        encoding := this.CheckUtf8(buffer, size)
+        if encoding != "None" {
+            return encoding
+        }
+
+        ; Check for ANSI encoding
+        if !this.ContainsZero(buffer, size) {
+            return this.CheckChinese(buffer, size) ? "GBK" : "Ansi"
+        }
+
+        return "None"
+    }
+
+    CheckUtf8(buffer, size) {
+        pos := 0
+        while pos < size {
+            ch := this.ByteAt(buffer, pos)
+            pos++
+
+            if ch < 0x80 {
+                continue
+            }
+
+            if ch >= 0xC2 && ch <= 0xDF {
+                if !this.IsContinuationByte(this.ByteAt(buffer, pos)) {
+                    return "None"
+                }
+                pos++
+                continue
+            }
+
+            if ch >= 0xE0 && ch <= 0xEF {
+                if !this.IsContinuationByte(this.ByteAt(buffer, pos)) || !this.IsContinuationByte(this.ByteAt(buffer, pos + 1)) {
+                    return "None"
+                }
+                pos += 2
+                continue
+            }
+
+            if ch >= 0xF0 && ch <= 0xF4 {
+                if !this.IsContinuationByte(this.ByteAt(buffer, pos)) || !this.IsContinuationByte(this.ByteAt(buffer, pos + 1)) || !this.IsContinuationByte(this.ByteAt(buffer, pos + 2)) {
+                    return "None"
+                }
+                pos += 3
+                continue
+            }
+
+            return "None"
+        }
+        ; return "Utf8Nobom"
+        return "UTF-8"
+    }
+
+    IsContinuationByte(byte) {
+        return byte >= 0x80 && byte <= 0xBF
+    }
+
+    ContainsZero(buffer, size) {
+        pos := 0
+        while pos < size {
+            if this.ByteAt(buffer, pos) = 0 {
+                return true
+            }
+            pos++
+        }
+        return false
+    }
+
+    CheckChinese(buffer, size) {
+        pos := 0
+        while pos < size - 1 {
+            ch1 := this.ByteAt(buffer, pos)
+            ch2 := this.ByteAt(buffer, pos + 1)
+            pos += 2
+
+            if (ch1 >= 176 && ch1 <= 247 && ch2 >= 160 && ch2 <= 254) ; GB2312
+                || (ch1 >= 129 && ch1 <= 254 && ch2 >= 64 && ch2 <= 254)  ; GBK
+                || (ch1 >= 129 && ((ch2 >= 64 && ch2 <= 126) || (ch2 >= 161 && ch2 <= 254))) { ; Big5
+                return true
+            }
+        }
+        return false
+    }
+
+    ByteAt(buffer, index) {
+        return NumGet(buffer, index, "UChar")
+    }
+}
+
+; 使用示例：
+; detect := TextEncodingDetect()
+; encoding := detect.DetectEncoding("C:\Users\Thunder\Downloads\Compressed\02 音名与钢琴键盘.srt")
+; MsgBox "Detected Encoding: " encoding

lib/MyTool.ahk

@@ -3,22 +3,22 @@
 log_toggle := false
 
 ; 在路径中，获取程序的名称
-GetNameForPath(program_path){
-  SplitPath program_path, &name
+GetNameForPath(program_path) {
+  SplitPath program_path, &name, &dir, &ext, &name_no_ext, &drive
   return name
 }
 
 SearchProgram(target_app_path) {
   ; 程序正在运行
   if (WinExist("ahk_exe " GetNameForPath(target_app_path))) {
-      return true
+    return true
   } else {
-      return false
+    return false
   }
 }
 
-SelectedNoteProgram(note_app_names){
-  Loop Parse note_app_names, "`n"{
+SelectedNoteProgram(note_app_names) {
+  Loop Parse note_app_names, "`n" {
     note_program := A_LoopField
     if (WinExist("ahk_exe " note_program)) {
       return note_program
@@ -28,49 +28,57 @@ SelectedNoteProgram(note_app_names){
   Exit
 }
 
-ActivateProgram(process_name){
-  if WinActive("ahk_exe " process_name){
-      return
+ActivateProgram(process_name) {
+  if WinActive("ahk_exe " process_name) {
+    return
   }
 
   if (WinExist("ahk_exe " process_name)) {
-      WinActivate ("ahk_exe " process_name)
-      Sleep 300 ; 给程序切换窗口的时间
+    WinActivate ("ahk_exe " process_name)
+    Sleep 300 ; 给程序切换窗口的时间
   } else {
-      MsgBox process_name " is not running"
-      Exit
+    MsgBox process_name " is not running"
+    Exit
   }
 }
 
-IsPotplayerRunning(media_player_path){
+IsPotplayerRunning(media_player_path) {
   if SearchProgram(media_player_path)
-      return true
+    return true
   else
-      return false
+    return false
 }
 
 ; 获取Potplayer的标题
 ; 获取失败的原因：因为Potplayer的exe可能存在多个线程，而WinGetTitle其中一个线程的标题，结果可能为空字符串
 ; 参考：https://stackoverflow.com/questions/54570212/why-is-my-call-to-wingettitle-returning-an-empty-string
-GetPotplayerTitle(potplayer_process_name){
+GetPotplayerTitle(potplayer_process_name) {
   ids := WinGetList("ahk_exe " potplayer_process_name)
-  for id in ids{
+
+  title := ""
+  for id in ids {
+    try {
       title := WinGetTitle("ahk_id " id)
-      if title == ""
-        continue
-      else
-        return title
+    } catch TargetError as err {
+      ; 目标窗口未找到
+      continue
+    }
+    if title == ""
+      continue
+    else
+      return title
   }
+  Assert(title == "", "Error: Get Potplayer title failure!")
 }
 
-MyLog(message){
+MyLog(message) {
   if log_toggle
-      MsgBox message
+    MsgBox message
 }
 
 ; 安全的递归
 global running_count := 0
-SafeRecursion(){
+SafeRecursion() {
   global running_count
   running_count++
   ToolTip("正在重试，第" running_count "次尝试...")
@@ -83,17 +91,17 @@ SafeRecursion(){
 }
 
 ; 等待释放指定按键
-ReleaseKeyboard(keyName){
-  if GetKeyState(keyName){
-      if KeyWait(keyName,"T2") == 0{
-          SafeRecursion()
-          ReleaseKeyboard(keyName)
-      }
+ReleaseKeyboard(keyName) {
+  if GetKeyState(keyName) {
+    if KeyWait(keyName, "T2") == 0 {
+      SafeRecursion()
+      ReleaseKeyboard(keyName)
+    }
   }
   running_count := 0
 }
 
-ReleaseCommonUseKeyboard(){
+ReleaseCommonUseKeyboard() {
   ReleaseKeyboard("Control")
   ReleaseKeyboard("Shift")
   ReleaseKeyboard("Alt")
@@ -137,8 +145,8 @@ UrlDecode(Url, Enc := "UTF-8") {
   Return Url
 }
 
-Assert(condition, exception_message){
-  if (condition){
+Assert(condition, exception_message) {
+  if (condition) {
     MsgBox exception_message
     Exit
   }