Add yt command

documents/howtouse.md

@@ -60,7 +60,7 @@
 | <kbd>**Z**</kbd> <kbd>**Z**</kbd><br>Write current file and exit | <kbd>**Z**</kbd> <kbd>**Q**</kbd><br>Same as `:q!` | <kbd>**Ctrl**</kbd> <kbd>**w**</kbd> <kbd>**c**</kbd><br>Close current window | <kbd>**?**</kbd><br>`keyword` Search backwards |
 | <kbd>**/**</kbd><br>`keyword` Search forwards | <kbd>**\\**</kbd> <kbd>**r**</kbd><br>Quick Run | <kbd>**s**</kbd> OR <kbd>**c**</kbd><kbd>**u**</kbd><br> Delete current charater and enter insert mode | <kbd>**y**</kbd><kbd>**{**</kbd><br> Yank to the previous blank line |
 | <kbd>**y**</kbd><kbd>**}**</kbd><br> Yank to the next blank line | <kbd>**y**</kbd><kbd>**l**</kbd><br> Yank a character| <kbd>**X**</kbd> OR <kbd>**d**</kbd><kbd>**h**</kbd><br> Cut a character before cursor | <kbd>**g**</kbd><kbd>**a**</kbd><br> Show current character info |
-| <kbd>**t**</kbd><kbd>**x**</kbd><br> Move to the left of the next ```x``` (any character) on the current line | <kbd>**T**</kbd><kbd>**x**</kbd><br> Move to the right of the back ```x ``` (any character) on the current line |
+| <kbd>**t**</kbd><kbd>**x**</kbd><br> Move to the left of the next ```x``` (any character) on the current line | <kbd>**T**</kbd><kbd>**x**</kbd><br> Move to the right of the back ```x ``` (any character) on the current line | <kbd>**y**</kbd><kbd>**t**</kbd><br><kbd>**Any key**</kbd><br> Yank characters to an any character |
 
 </details>
 

src/moepkg/help.nim

@@ -52,6 +52,7 @@ yy or Y    - Copy a line
 y{         - Yank to the previous blank line
 y}         - Yank to the next blank line
 yl         - Yank a character
+yt any     - Ynak characters to a any character
 p          - Paste the clipboard
 n          - Search forwards
 :          - Start Ex mode

src/moepkg/normalmode.nim

@@ -464,6 +464,55 @@ proc yankCharacters(status: var Editorstatus, registerName: string) =
     registerName,
     isDelete)
 
+# yt command
+proc yankCharactersToCharacter(status: var EditorStatus,
+                               rune: Rune) =
+
+  let
+    currentColumn = currentMainWindowNode.currentColumn
+    # Get the position of a character
+    position = currentBufStatus.searchOneCharacterToEndOfLine(
+      currentMainWindowNode,
+      rune)
+
+  if position > currentColumn:
+    const
+      isDelete = false
+      registerName = ""
+    currentBufStatus.yankCharacters(
+      status.registers,
+      currentMainWindowNode,
+      status.commandLine,
+      status.messageLog,
+      status.settings,
+      position,
+      registerName,
+      isDelete)
+
+# yt command
+proc yankCharactersToCharacter(status: var EditorStatus,
+                               rune: Rune,
+                               registerName: string) =
+
+  let
+    currentColumn = currentMainWindowNode.currentColumn
+    # Get the position of a character
+    position = currentBufStatus.searchOneCharacterToEndOfLine(
+      currentMainWindowNode,
+      rune)
+
+  if position > currentColumn:
+    const isDelete = false
+    currentBufStatus.yankCharacters(
+      status.registers,
+      currentMainWindowNode,
+      status.commandLine,
+      status.messageLog,
+      status.settings,
+      position,
+      registerName,
+      isDelete)
+
 proc deleteCharacters(status: var EditorStatus, registerName: string) =
   if currentBufStatus.isReadonly:
     status.commandLine.writeReadonlyModeWarning
@@ -844,6 +893,8 @@ proc addRegister(status: var EditorStatus, command, registerName: string) =
     status.deleteCharacterAndEnterInsertMode(registerName)
   elif command.len == 3 and command[0 .. 1] == "ci":
     status.changeInnerCommand(command[2].toRune, registerName)
+  elif command.len == 3 and command[0 .. 1] == "yt":
+    status.yankCharactersToCharacter(command[2].toRune, registerName)
   else:
     discard
 
@@ -899,10 +950,11 @@ proc registerCommand(status: var EditorStatus, command: seq[Rune]) =
        cmd == "dgg" or
        cmd == "d{" or
        cmd == "d}" or
-       cmd.len == 3 and cmd[0 .. 1] == "di" or
+       (cmd.len == 3 and cmd[0 .. 1] == "di") or
        cmd == "dh" or
        cmd == "cl" or cmd == "s" or
-       cmd.len == 3 and cmd[0 .. 1] == "ci":
+       (cmd.len == 3 and cmd[0 .. 1] == "ci") or
+       (cmd.len == 3 and cmd[0 .. 1] == "yt"):
     status.addRegister(cmd, $registerName)
 
 proc pasteAfterCursor(status: var EditorStatus) {.inline.} =
@@ -1110,6 +1162,9 @@ proc normalCommand(status: var EditorStatus,
       status.yankToNextBlankLine
     elif secondKey == ord('l'):
       status.yankCharacters
+    elif secondKey == ord('t'):
+      let thirdKey = commands[2]
+      status.yankCharactersToCharacter(thirdKey)
   elif key == ord('Y'):
     status.yankLines
   elif key == ord('p'):
@@ -1358,6 +1413,11 @@ proc isNormalModeCommand(command: seq[Rune]): InputState =
            command[1] == ord('}') or
            command[1] == ord('l'):
           result = InputState.Valid
+        elif command == "yt".ru:
+          result = InputState.Continue
+      elif command.len == 3:
+        if command[0 .. 1] == "yt".ru:
+          result = InputState.Valid
 
     elif command[0] == ord('='):
       if command.len == 1:

tests/tnormalmode.nim

@@ -1836,3 +1836,83 @@ suite "Normal mode: Move to the right of the back character":
 
     check currentMainWindowNode.currentLine == 0
     check currentMainWindowNode.currentColumn == 0
+
+suite "Normal mode: Yank characters to any character":
+  test "Case 1: Yank characters before 'd' (\"ytd\" command)":
+    var status = initEditorStatus()
+    status.addNewBuffer
+
+    const buffer = ru "abcd"
+    currentBufStatus.buffer = initGapBuffer(@[buffer])
+
+    const command = ru "ytd"
+    status.normalCommand(command, 100, 100)
+
+    check currentBufStatus.buffer.len == 1
+    check currentBufStatus.buffer[0] == buffer
+
+    check not status.registers.noNameRegister.isLine
+    check status.registers.noNameRegister.buffer[0] == ru "abc"
+
+  test "Case 2: Yank characters before 'd' (\"ytd\" command)":
+    var status = initEditorStatus()
+    status.addNewBuffer
+
+    const buffer = ru "ab c d"
+    currentBufStatus.buffer = initGapBuffer(@[buffer])
+
+    const command = ru "ytd"
+    status.normalCommand(command, 100, 100)
+
+    check currentBufStatus.buffer.len == 1
+    check currentBufStatus.buffer[0] == buffer
+
+    check not status.registers.noNameRegister.isLine
+    check status.registers.noNameRegister.buffer[0] == ru "ab c "
+
+  test "Case 1: Do nothing (\"ytd\" command)":
+    var status = initEditorStatus()
+    status.addNewBuffer
+
+    const buffer = ru "abc"
+    currentBufStatus.buffer = initGapBuffer(@[buffer])
+
+    const command = ru "ytd"
+    status.normalCommand(command, 100, 100)
+
+    check currentBufStatus.buffer.len == 1
+    check currentBufStatus.buffer[0] == buffer
+
+    check status.registers.noNameRegister.buffer.len == 0
+
+  test "Case 2: Do nothing (\"ytd\" command)":
+    var status = initEditorStatus()
+    status.addNewBuffer
+
+    const buffer = ru "abcd efg"
+    currentBufStatus.buffer = initGapBuffer(@[buffer])
+    currentMainWindowNode.currentColumn = 3
+
+    const command = ru "ytd"
+    status.normalCommand(command, 100, 100)
+
+    check currentBufStatus.buffer.len == 1
+    check currentBufStatus.buffer[0] == buffer
+
+    check status.registers.noNameRegister.buffer.len == 0
+
+  test "Case 3: Do nothing (\"ytd\" command)":
+    var status = initEditorStatus()
+    status.addNewBuffer
+
+    const buffer = ru "abcd efg"
+    currentBufStatus.buffer = initGapBuffer(@[buffer])
+    currentMainWindowNode.currentColumn = buffer.high
+
+    const command = ru "ytd"
+    status.normalCommand(command, 100, 100)
+
+    check currentBufStatus.buffer.len == 1
+    check currentBufStatus.buffer[0] == buffer
+
+    check status.registers.noNameRegister.buffer.len == 0