Execute lldb command and open its output in Kaleidoscope diff

README.md

Diff output of two lldb commands

Setup

1. Copy the contents of the last snippet (lldbinit) from the gist page, and paste into your .lldbinit file. This makes the ksdiff macro known inside lldb.
2. Put file ksdiff.py in ~/.lldb/
3. sudo pip install temp
4. Restart Xcode debug session

Example

(lldb) ksdiff <any lldb command>; <any lldb command>

e.g.

(lldb) ksdiff po myArray1; po myArray2

If it doesn't work, make sure you have ksdiff installed and the path (see below) is correct

ksdiff.py

# 
# See README.md for install details.
# 
# (lldb) ksdiff <any lldb command>; <any lldb command>
#
# e.g.
#
# (lldb) ksdiff po myArray1; po myArray2
#

import lldb
import subprocess
import tempfile

diff_tool_path = '/usr/local/bin/ksdiff'

def ksdiff(debugger, command, result, dict):
	res = lldb.SBCommandReturnObject()
	comminter = debugger.GetCommandInterpreter()

	commands = command.split(';')

	comminter.HandleCommand(commands[0], res)
	if not res.Succeeded():
		print('error: ' + commands[0])
		return
	lhs_output = res.GetOutput()
	lhs_file = tempfile.NamedTemporaryFile(delete=False)
	lhs_file.write(lhs_output)
	lhs_file.close()

	comminter.HandleCommand(commands[1], res)
	if not res.Succeeded():
		print('error:' + commands[1])
		return
	rhs_output = res.GetOutput()
	rhs_file = tempfile.NamedTemporaryFile(delete=False)
	rhs_file.write(rhs_output)
	rhs_file.close()
	
	subl = subprocess.Popen([diff_tool_path, lhs_file.name, rhs_file.name])

lldbinit

### Kaleidoscope LLDB commands support - DO NOT MODIFY
command script import ~/.lldb/ksdiff.py
command script add -f ksdiff.ksdiff ksdiff
###

Screenshot