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#!/usr/bin/env python
"""Run the most recently built <binary>.exe or <binary>.native under _build, with args."""
from __future__ import print_function
from os import path
import os
import sys
class NotFound(Exception):
"""Could not find a binary under the build directory."""
def __init__(self, binary, build_dir):
msg = 'Could not find binary "{binary}" under {build_dir}'.format(
binary=binary, build_dir=build_dir)
Exception.__init__(self, msg)
def get_build_dir():
"""DUNE_BUILD_DIR if set, otherwise <project-root>/_build."""
if os.getenv('DUNE_BUILD_DIR'):
return os.getenv('DUNE_BUILD_DIR')
internal = path.dirname(path.realpath(__file__))
project_root = path.dirname(internal)
return path.join(project_root, '_build')
def find_candidates(build_dir, binary):
"""Lists paths under build_dir called either <binary>.exe or <binary>.native."""
results = []
for root, _, files in os.walk(build_dir):
for name in files:
basename, ext = path.splitext(name)
if basename == binary and ext in ['.exe', '.native']:
results.append(path.join(root, name))
return results
def find_and_run_most_recent_binary(build_dir, binary, args):
"""Find & run the most recently built binary under build_dir with args."""
candidates = find_candidates(build_dir, binary)
if not candidates:
raise NotFound(binary, build_dir)
most_recent = max(candidates, key=path.getmtime)
os.execv(most_recent, [most_recent] + args)
def main(argv):
this = path.basename(argv[0])
if len(argv) < 2:
print('Usage: {this} <binary> [args]'.format(this=this))
print('')
print('Summary: {doc}'.format(doc=__doc__))
sys.exit(1)
binary = argv[1]
args = argv[2:]
build_dir = get_build_dir()
try:
find_and_run_most_recent_binary(build_dir, binary, args)
except NotFound as error:
print('{this}: {error}'.format(this=this, error=error))
sys.exit(1)
if __name__ == '__main__':
main(sys.argv)
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