"""
Pager Detection
Detects and handles pager output (less, more, systemctl)
"""
import re
import logging
from typing import Tuple
logger = logging.getLogger(__name__)
class PagerDetector:
"""Detects pager output in command results"""
def detect_pager_old(self, buffer) -> Tuple[bool, str]:
"""
Check if output contains pager indicators
CRITICAL: Patterns designed to NOT match:
- Shell prompts (user@host:~$)
- Password prompts ([sudo] password:)
Returns:
(detected, pager_type) tuple
"""
# Very specific pager patterns that WON'T match prompts/passwords
pager_patterns = [
# Systemctl/nmcli style: "lines 1-29" or "lines 1-29/50"
(r'lines\s+\d+-\d+', 'systemctl_pager'),
# Less at end: "(END)" with optional whitespace
(r'\(END\)\s*$', 'less_end'),
# Traditional more: "--More--" often followed by percentage
(r'--More--', 'more_pager'),
# Less prompt: ONLY if it's literally just ":" and whitespace
# NOT "password:" or "path:"
(r'^:\s*$', 'less_prompt'), # Must be START of line, ONLY colon
]
# Check current_output (partial line)
if hasattr(buffer, 'buffer') and hasattr(buffer.buffer, 'current_output'):
current = buffer.buffer.current_output.strip() # Strip for cleaner matching
# SAFETY: Skip if it looks like a password prompt
if 'password' in current.lower():
return False, "password_prompt_excluded"
# SAFETY: Skip if it looks like a shell prompt (has @ symbol)
if '@' in current:
return False, "shell_prompt_excluded"
for pattern, pager_type in pager_patterns:
if re.search(pattern, current, re.IGNORECASE):
logger.info(f"PAGER DETECTED in partial line: {pager_type} - '{current}'")
return True, pager_type
# Check last completed line
if hasattr(buffer, 'buffer') and hasattr(buffer.buffer, 'lines'):
lines_list = list(buffer.buffer.lines)
if lines_list:
last_line = lines_list[-1]
line_text = last_line.text if hasattr(last_line, 'text') else str(last_line)
line_stripped = line_text.strip()
# SAFETY: Skip if it looks like a password prompt
if 'password' in line_stripped.lower():
return False, "password_prompt_excluded"
# SAFETY: Skip if it looks like a shell prompt
if '@' in line_stripped:
return False, "shell_prompt_excluded"
for pattern, pager_type in pager_patterns:
if re.search(pattern, line_stripped, re.IGNORECASE):
logger.info(f"PAGER DETECTED in last line: {pager_type} - '{line_stripped}'")
return True, pager_type
return False, "none"
def detect_pager_old1(self, buffer) -> Tuple[bool, str, str]:
"""
Check if output contains pager indicators
Returns:
(detected, pager_type, action) tuple
- detected: True if pager found
- pager_type: Type of pager
- action: "continue" (send Space), "quit" (send q), "none"
"""
pager_patterns = [
# Pattern, pager_type, action
(r'lines\s+\d+-\d+', 'systemctl_pager', 'continue'), # Still more lines
(r'\(END\)\s*$', 'less_end', 'quit'), # At end, quit
(r'--More--', 'more_pager', 'continue'), # More to show
(r'^:\s*$', 'less_prompt', 'continue'), # Less waiting for input
]
# Check current_output (partial line)
if hasattr(buffer, 'buffer') and hasattr(buffer.buffer, 'current_output'):
current = buffer.buffer.current_output.strip()
# SAFETY: Skip if password prompt
if 'password' in current.lower():
return False, "password_prompt_excluded", "none"
# SAFETY: Skip if shell prompt
if '@' in current:
return False, "shell_prompt_excluded", "none"
for pattern, pager_type, action in pager_patterns:
if re.search(pattern, current, re.IGNORECASE):
logger.info(f"PAGER DETECTED in partial line: {pager_type} - action={action} - '{current}'")
return True, pager_type, action
# Check last completed line
if hasattr(buffer, 'buffer') and hasattr(buffer.buffer, 'lines'):
lines_list = list(buffer.buffer.lines)
if lines_list:
last_line = lines_list[-1]
line_text = last_line.text if hasattr(last_line, 'text') else str(last_line)
line_stripped = line_text.strip()
# SAFETY: Skip if password prompt
if 'password' in line_stripped.lower():
return False, "password_prompt_excluded", "none"
# SAFETY: Skip if shell prompt
if '@' in line_stripped:
return False, "shell_prompt_excluded", "none"
for pattern, pager_type, action in pager_patterns:
if re.search(pattern, line_stripped, re.IGNORECASE):
logger.info(f"PAGER DETECTED in last line: {pager_type} - action={action} - '{line_stripped}'")
return True, pager_type, action
return False, "none", "none"
def detect_pager(self, buffer) -> Tuple[bool, str, str]:
"""
Check if output contains pager indicators
Returns:
(detected, pager_type, action) tuple
- action: "continue" (send Space), "quit" (send q), "none"
"""
# Check current_output (partial line)
if hasattr(buffer, 'buffer') and hasattr(buffer.buffer, 'current_output'):
current = buffer.buffer.current_output.strip()
# SAFETY: Skip if password prompt
if 'password' in current.lower():
return False, "password_prompt_excluded", "none"
# SAFETY: Skip if shell prompt
if '@' in current:
return False, "shell_prompt_excluded", "none"
# PRIORITY 1: Check for (END) FIRST - even if combined with lines X-Y
if re.search(r'\(END\)', current):
logger.info(f"PAGER at END in partial line: '{current}'")
return True, 'less_end', 'quit'
# PRIORITY 2: Check for continuation patterns
if re.search(r'lines\s+\d+-\d+', current, re.IGNORECASE):
logger.info(f"PAGER CONTINUE in partial line: '{current}'")
return True, 'systemctl_pager', 'continue'
if re.search(r'--More--', current):
logger.info(f"PAGER CONTINUE (more) in partial line: '{current}'")
return True, 'more_pager', 'continue'
if re.search(r'^:\s*$', current):
logger.info(f"PAGER CONTINUE (less prompt) in partial line: '{current}'")
return True, 'less_prompt', 'continue'
# Check last completed line
if hasattr(buffer, 'buffer') and hasattr(buffer.buffer, 'lines'):
lines_list = list(buffer.buffer.lines)
if lines_list:
last_line = lines_list[-1]
line_text = last_line.text if hasattr(last_line, 'text') else str(last_line)
line_stripped = line_text.strip()
# SAFETY: Skip if password prompt
if 'password' in line_stripped.lower():
return False, "password_prompt_excluded", "none"
# SAFETY: Skip if shell prompt
if '@' in line_stripped:
return False, "shell_prompt_excluded", "none"
# PRIORITY 1: Check for (END) FIRST
if re.search(r'\(END\)', line_stripped):
logger.info(f"PAGER at END in last line: '{line_stripped}'")
return True, 'less_end', 'quit'
# PRIORITY 2: Check for continuation patterns
if re.search(r'lines\s+\d+-\d+', line_stripped, re.IGNORECASE):
logger.info(f"PAGER CONTINUE in last line: '{line_stripped}'")
return True, 'systemctl_pager', 'continue'
if re.search(r'--More--', line_stripped):
logger.info(f"PAGER CONTINUE (more) in last line: '{line_stripped}'")
return True, 'more_pager', 'continue'
if re.search(r'^:\s*$', line_stripped):
logger.info(f"PAGER CONTINUE (less prompt) in last line: '{line_stripped}'")
return True, 'less_prompt', 'continue'
return False, "none", "none"
