demo_readline.py•4.87 kB
#!/usr/bin/env python3
"""
演示readline功能和路径自动补全的脚本
用于测试方向键导航、Tab补全和路径自动补全功能
"""
try:
import readline
except ImportError:
# Windows 系统使用 pyreadline3
try:
import pyreadline3 as readline
except ImportError:
# 如果都没有 readline 功能，创建一个兼容层
class MockReadline:
def get_line_buffer(self): return ""
def redisplay(self): pass
def set_completer(self, completer): pass
def set_completer_delims(self, delims): pass
def parse_and_bind(self, binding): pass
def read_history_file(self, filename): pass
def write_history_file(self, filename): pass
readline = MockReadline()
import rlcompleter
import sys
class DemoCompleter:
"""演示用补全器"""
def __init__(self):
self.commands = ['test', 'call', 'breakpoint', 'help', 'quit']
self.http_methods = ['GET', 'POST', 'PUT', 'DELETE']
self.paths = ['/api/test', '/api/user', '/api/data', '/debug/test']
def complete(self, text, state):
if state == 0:
line = readline.get_line_buffer()
self.matches = self._get_matches(line, text)
try:
return self.matches[state]
except IndexError:
return None
def _get_matches(self, line, text):
matches = []
if not line.strip() or ' ' not in line:
matches.extend([cmd for cmd in self.commands if cmd.startswith(text)])
else:
parts = line.split()
command = parts[0].lower()
if command == 'test' and len(parts) == 2:
matches.extend([path for path in self.paths if path.startswith(text)])
elif command == 'call' and len(parts) >= 2:
current_part_index = len(parts) - 1
if current_part_index == 1:
matches.extend([method for method in self.http_methods if method.startswith(text.upper())])
elif current_part_index == 2:
matches.extend([path for path in self.paths if path.startswith(text)])
return matches
def preprocess_command(command_line):
"""预处理命令行，自动为test命令的路径添加前缀'/'"""
if not command_line.strip():
return command_line
parts = command_line.split()
if len(parts) >= 2 and parts[0].lower() == 'test':
path_arg = parts[1]
if not path_arg.isdigit() and ',' not in path_arg and not path_arg.startswith('/'):
parts[1] = '/' + path_arg
return ' '.join(parts)
return command_line
def setup_readline():
"""设置readline"""
completer = DemoCompleter()
readline.set_completer(completer.complete)
readline.set_completer_delims(' \t\n')
readline.parse_and_bind('tab: complete')
readline.parse_and_bind('set enable-keypad on')
def main():
print("🔧 Readline功能演示")
print("=" * 30)
print("功能演示:")
print("• ↑↓方向键: 浏览命令历史")
print("• ←→方向键: 编辑当前命令")
print("• Tab键: 自动补全")
print("• test命令路径自动添加'/'前缀")
print("\n尝试以下命令:")
print(" test api/test")
print(" call GET api")
print(" help")
print(" quit")
print("\n输入 'quit' 退出演示")
print("-" * 30)
setup_readline()
history = []
while True:
try:
command = input("demo> ").strip()
if not command:
continue
# 预处理命令
original_command = command
command = preprocess_command(command)
if original_command != command:
print(f"📝 自动补全: {original_command} -> {command}")
history.append(command)
if command.lower() == 'quit':
print("👋 演示结束")
break
elif command.lower() == 'help':
print("可用命令:")
print(" test <path> - 测试路径自动补全")
print(" call <method> <path> - 测试方法和路径补全")
print(" history - 显示命令历史")
print(" quit - 退出演示")
elif command.lower() == 'history':
print("命令历史:")
for i, cmd in enumerate(history[-10:], 1): # 显示最近10条
print(f" {i}: {cmd}")
else:
print(f"执行命令: {command}")
except KeyboardInterrupt:
print("\n👋 演示被中断")
break
except EOFError:
print("\n👋 演示结束")
break
if __name__ == "__main__":
main()