Files
clang-p2996/lldb/test/Shell/Driver/TestHelp.test
Lawrence D'Anna bbef51eb43 [lldb] make it easier to find LLDB's python
It is surprisingly difficult to write a simple python script that
can reliably `import lldb` without failing, or crashing.   I'm
currently resorting to convolutions like this:

    def find_lldb(may_reexec=False):
		if prefix := os.environ.get('LLDB_PYTHON_PREFIX'):
			if os.path.realpath(prefix) != os.path.realpath(sys.prefix):
				raise Exception("cannot import lldb.\n"
					f"  sys.prefix should be: {prefix}\n"
					f"  but it is: {sys.prefix}")
		else:
			line1, line2 = subprocess.run(
				['lldb', '-x', '-b', '-o', 'script print(sys.prefix)'],
				encoding='utf8', stdout=subprocess.PIPE,
				check=True).stdout.strip().splitlines()
			assert line1.strip() == '(lldb) script print(sys.prefix)'
			prefix = line2.strip()
			os.environ['LLDB_PYTHON_PREFIX'] = prefix

		if sys.prefix != prefix:
			if not may_reexec:
				raise Exception(
					"cannot import lldb.\n" +
					f"  This python, at {sys.prefix}\n"
					f"  does not math LLDB's python at {prefix}")
			os.environ['LLDB_PYTHON_PREFIX'] = prefix
			python_exe = os.path.join(prefix, 'bin', 'python3')
			os.execl(python_exe, python_exe, *sys.argv)

		lldb_path = subprocess.run(['lldb', '-P'],
			check=True, stdout=subprocess.PIPE,
				encoding='utf8').stdout.strip()

		sys.path = [lldb_path] + sys.path

This patch aims to replace all that with:

  #!/usr/bin/env lldb-python
  import lldb
  ...

... by adding the following features:

* new command line option: --print-script-interpreter-info.  This
   prints language-specific information about the script interpreter
   in JSON format.

* new tool (unix only): lldb-python which finds python and exec's it.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D112973
2021-11-10 10:33:34 -08:00

69 lines
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UNSUPPORTED: lldb-repro
RUN: %lldb --help | FileCheck %s
RUN: cat %S/../../../docs/man/lldb.rst | FileCheck %s
CHECK: ATTACHING
CHECK: --attach-name
CHECK: --attach-pid
CHECK: -n <value>
CHECK: -p <value>
CHECK: --wait-for
CHECK: -w
CHECK: COMMANDS
CHECK: --batch
CHECK: -b
CHECK: -K <value>
CHECK: -k <value>
CHECK: --local-lldbinit
CHECK: --no-lldbinit
CHECK: --one-line-before-file
CHECK: --one-line-on-crash
CHECK: --one-line
CHECK: -O
CHECK: -o
CHECK: -Q
CHECK: --source-before-file
CHECK: --source-on-crash
CHECK: --source-quietly
CHECK: --source
CHECK: -S
CHECK: -s
CHECK: -x
CHECK: OPTIONS
CHECK: --arch
CHECK: -a
CHECK: --capture-path
CHECK: --capture
CHECK: --core
CHECK: -c
CHECK: --debug
CHECK: -d
CHECK: --editor
CHECK: -e
CHECK: --file
CHECK: -f
CHECK: --help
CHECK: -h
CHECK: --no-use-colors
CHECK: --replay
CHECK: --version
CHECK: -v
CHECK: -X
CHECK: REPL
CHECK: -r
CHECK: --repl-language
CHECK: --repl
CHECK: -R
CHECK: -r
CHECK: SCRIPTING
CHECK: -l
CHECK: --print-script-interpreter-info
CHECK: --python-path
CHECK: -P
CHECK: --script-language