mirror of
https://github.com/kennethreitz/bob-builder-1.git
synced 2026-06-05 23:10:17 +00:00
Kenneth Reitz
76 lines
1.6 KiB
Python
76 lines
1.6 KiB
Python
# -*- coding: utf-8 -*-
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import os
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import re
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import tarfile
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from subprocess import Popen, PIPE
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DEPS_MARKER = '# Build Deps: '
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BUILD_PATH_MARKER = '# Build Path: '
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def iter_marker_lines(marker, formula, strip=True):
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"""Extracts any markers from a given formula."""
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with open(formula) as f:
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for line in f:
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if line.startswith(marker):
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if strip:
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line = line[len(marker):]
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line = line.strip()
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yield line
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def deps_extract(formula):
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"""Extracts a list of declared dependencies from a given formula."""
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# Depends: libraries/libsqlite, libraries/libsqlite
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depends = []
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for result in iter_marker_lines(DEPS_MARKER, formula):
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# Split on both space and comma.
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result = re.split(r'[ ,]+', result)
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depends.extend(result)
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return depends
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def path_extract(formula):
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"""Extracts a declared build path from a given formula."""
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for result in iter_marker_lines(BUILD_PATH_MARKER, formula):
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return result
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def mkdir_p(path):
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try:
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os.makedirs(path)
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except OSError:
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pass
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def process(cmd, cwd=None):
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"""A simple wrapper around the subprocess module."""
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p = Popen(cmd, cwd=cwd, shell=False, stdout=PIPE, stderr=PIPE)
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return p
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def pipe(a, b, indent=True):
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"""Pipes stream A to stream B, with optional indentation."""
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for line in a:
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if indent:
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b.write(' ')
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b.write(line)
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def targz_tree(dir, output):
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"""Creates a tar.gz archive from a given directory."""
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with tarfile.open(output, 'w:gz') as tar:
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tar.add(dir, arcname=os.path.basename(dir))
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