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Mar 24, 2026 . 1 changed file with 141 additions and 60 deletions.There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -1,6 +1,19 @@ class Clipboard: ALLOWED_COMMANDS = [ # delete/pop the last inserted content 'd', # copy/push an content to clipboard 'c', # paste/pop the last inserted content 'p', # finish the repl 'q', # show/print the stack representation 's', ] def __init__(self, stack: Stack): self.stack = stack @@ -13,6 +26,121 @@ def paste_and_consume(self) -> str | None: def paste_text(self) -> str | None: return self.stack.get() def parse_line(self, line: str) -> tuple[str, str | None] | ValueError: command, content = "", None for idx, lt in enumerate(line): if idx == 0: if not lt in self.ALLOWED_COMMANDS: return ValueError(f"Commando [{lt}] não implementado: [{self.ALLOWED_COMMANDS}].") command = lt continue else: if lt == " ": continue else: content = line[idx:] break return (command, content) def run(self): while True: match self.parse_line(input("> ")): case ('c', content): if not content: print("comando de [copy] precisa de conteúdo para ser copiado.") continue self.copy_text(content) case ('d', None): if not self.paste_and_consume(): print("Clipboard já está vazio.") case ('p', None): text = self.paste_text() if not text: print("Sem items no clipboard") else: print(text) case ('q', None): print("") return case ('s', None): print(f"Stack:\n{self.stack}") case ValueError() as err: print(err) from dataclasses import dataclass from enum import Enum class TokenKind(Enum): WORD = 1 SPACE = 2 @dataclass class TextEditorToken: content: str kind: TokenKind class TextEditor: def __init__(self, stack: Stack): self.stack = stack def write(self, line): for it in self.parse_line(line): self.stack.push(it) def undo(self): self.stack.pop() def parse_line(self, line) -> list[TextEditorToken]: items = [] cursor = 0 line_sz = len(line) def peek_next() -> str | None: if cursor+1 > line_sz-1: return None return line[cursor+1] def collect_word(is_space: bool) -> str: nonlocal cursor word = "" while True: tk = peek_next() if not tk: return word if is_space: if tk == " ": word += tk cursor += 1 else: return word else: if tk != " ": word += tk cursor += 1 else: return word while cursor < line_sz: char = line[cursor] print(f"char [{char}]") print(f"cursor [{cursor}]") if char == " ": space = char + collect_word(True) items.append(TextEditorToken(space, TokenKind.SPACE)) else: word = char + collect_word(False) items.append(TextEditorToken(word, TokenKind.WORD)) cursor += 1 return items # TODO: make it generic over type T class Stack: @@ -52,75 +180,28 @@ def __str__(self) -> str: counter -= 1 return stack_str def main(): try: te = TextEditor(Stack()) te.write("Olá mundo eu gosto de você") te.undo() te.undo() te.undo() te.undo() te.undo() te.undo() te.undo() te.write("isso é um test") except KeyboardInterrupt: print("") except Exception as err: print(f"Erro desconhecido: {err.args}") # entrypoint guard if __name__ == '__main__': main()cat: s: No such file or directory -
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,126 @@ class Clipboard: def __init__(self, stack: Stack): self.stack = stack def copy_text(self, text): self.stack.push(text) def paste_and_consume(self) -> str | None: return self.stack.pop() def paste_text(self) -> str | None: return self.stack.get() # TODO: make it generic over type T class Stack: def __init__(self): self.items = list() self.size = 0 def push(self, item): # ok, you can use append, but only this one '-' self.items.append(item) self.size += 1 def pop(self): if self.size < 1: return None # don't use .pop(), use your brain instead! it = self.items[self.size-1] self.items = self.items[:self.size-1] self.size -= 1 return it def get(self): if self.size < 1: return None # don't use get(-1) or arr[-1], use your brain instead return self.items[self.size-1] def __str__(self) -> str: stack_str = "" # don't use reverse, use your brain instead! counter = len(self.items)-1 while counter >= 0: stack_str += f"{self.items[counter]} -> [{counter}]\n" counter -= 1 return stack_str ALLOWED_COMMANDS = [ # delete/pop the last inserted content 'd', # copy/push an content to clipboard 'c', # paste/pop the last inserted content 'p', # finish the repl 'q', # show/print the stack representation 's', ] def run_clipboard(): clipboard = Clipboard(Stack()) while True: match parse_line(input("> ")): case ('c', content): if not content: print("comando de [copy] precisa de conteúdo para ser copiado.") clipboard.copy_text(content) case ('d', None): if not clipboard.paste_and_consume(): print("Clipboard já está vazio.") case ('p', None): text = clipboard.paste_text() if not text: print("Sem items no clipboard") else: print(text) case ('q', None): print("") return case ('s', None): print(f"Stack:\n{clipboard.stack}") case ValueError() as err: print(err) def main(): try: run_clipboard() except KeyboardInterrupt: print("") except Exception as err: print(f"Erro desconhecido: {err.args}") def parse_line(line: str) -> tuple[str, str | None] | ValueError: command, content = "", None for idx, lt in enumerate(line): if idx == 0: if not lt in ALLOWED_COMMANDS: return ValueError(f"Commando [{lt}] não implementado: [{ALLOWED_COMMANDS}].") command = lt continue else: if lt == " ": continue else: content = line[idx:] break return (command, content) # entrypoint guard if __name__ == '__main__': main()