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#!/usr/bin/env python3
# Converts clang-scan-deps output into response files.
#
# Usage:
#
# clang-scan-deps -compilation-database compile_commands.json ... > deps.json
# module-deps-to-rsp.py deps.json --module-name=ModuleName > module_name.cc1.rsp
# module-deps-to-rsp.py deps.json --tu-index=0 > tu.rsp
# clang @module_name.cc1.rsp
# clang @tu.rsp
import argparse
import json
import sys
class ModuleNotFoundError(Exception):
def __init__(self, module_name):
self.module_name = module_name
class FullDeps:
def __init__(self):
self.modules = {}
self.translation_units = []
def findModule(module_name, full_deps):
for m in full_deps.modules.values():
if m["name"] == module_name:
return m
raise ModuleNotFoundError(module_name)
def parseFullDeps(json):
ret = FullDeps()
for m in json["modules"]:
ret.modules[m["name"] + "-" + m["context-hash"]] = m
ret.translation_units = json["translation-units"]
return ret
def quote(str):
return '"' + str.replace("\\", "\\\\") + '"'
def main():
parser = argparse.ArgumentParser()
parser.add_argument(
"full_deps_file", help="Path to the full dependencies json file", type=str
)
action = parser.add_mutually_exclusive_group(required=True)
action.add_argument(
"--module-name", help="The name of the module to get arguments for", type=str
)
action.add_argument(
"--tu-index",
help="The index of the translation unit to get arguments for",
type=int,
)
parser.add_argument(
"--tu-cmd-index",
help="The index of the command within the translation unit (default=0)",
type=int,
default=0,
)
args = parser.parse_args()
full_deps = parseFullDeps(json.load(open(args.full_deps_file, "r")))
try:
cmd = []
if args.module_name:
cmd = findModule(args.module_name, full_deps)["command-line"]
elif args.tu_index != None:
tu = full_deps.translation_units[args.tu_index]
cmd = tu["commands"][args.tu_cmd_index]["command-line"]
print(" ".join(map(quote, cmd)))
except:
print("Unexpected error:", sys.exc_info()[0])
raise
if __name__ == "__main__":
main()
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