|
|
#!/usr/bin/env python
|
|
|
|
|
|
"""
|
|
|
Utility for inspecting files in various ways.
|
|
|
|
|
|
This tool is like the collection of tools found in a unix environment but are
|
|
|
cross platform and stable and suitable for our needs in the test suite.
|
|
|
|
|
|
This can be used instead of tools like:
|
|
|
[
|
|
|
dd
|
|
|
find
|
|
|
head
|
|
|
hexdump
|
|
|
ls
|
|
|
md5sum
|
|
|
readlink
|
|
|
sha1sum
|
|
|
stat
|
|
|
tail
|
|
|
test
|
|
|
readlink.py
|
|
|
md5sum.py
|
|
|
"""
|
|
|
|
|
|
from __future__ import absolute_import
|
|
|
|
|
|
import glob
|
|
|
import hashlib
|
|
|
import optparse
|
|
|
import os
|
|
|
import re
|
|
|
import sys
|
|
|
|
|
|
# Python 3 adapters
|
|
|
ispy3 = (sys.version_info[0] >= 3)
|
|
|
if ispy3:
|
|
|
def iterbytes(s):
|
|
|
for i in range(len(s)):
|
|
|
yield s[i:i + 1]
|
|
|
else:
|
|
|
iterbytes = iter
|
|
|
|
|
|
def visit(opts, filenames, outfile):
|
|
|
"""Process filenames in the way specified in opts, writing output to
|
|
|
outfile."""
|
|
|
for f in sorted(filenames):
|
|
|
isstdin = f == '-'
|
|
|
if not isstdin and not os.path.lexists(f):
|
|
|
outfile.write(b'%s: file not found\n' % f.encode('utf-8'))
|
|
|
continue
|
|
|
quiet = opts.quiet and not opts.recurse or isstdin
|
|
|
isdir = os.path.isdir(f)
|
|
|
islink = os.path.islink(f)
|
|
|
isfile = os.path.isfile(f) and not islink
|
|
|
dirfiles = None
|
|
|
content = None
|
|
|
facts = []
|
|
|
if isfile:
|
|
|
if opts.type:
|
|
|
facts.append('file')
|
|
|
if opts.hexdump or opts.dump or opts.md5 or opts.sha1:
|
|
|
content = open(f, 'rb').read()
|
|
|
elif islink:
|
|
|
if opts.type:
|
|
|
facts.append('link')
|
|
|
content = os.readlink(f)
|
|
|
elif isstdin:
|
|
|
content = getattr(sys.stdin, 'buffer', sys.stdin).read()
|
|
|
if opts.size:
|
|
|
facts.append('size=%s' % len(content))
|
|
|
elif isdir:
|
|
|
if opts.recurse or opts.type:
|
|
|
dirfiles = glob.glob(f + '/*')
|
|
|
facts.append('directory with %s files' % len(dirfiles))
|
|
|
elif opts.type:
|
|
|
facts.append('type unknown')
|
|
|
if not isstdin:
|
|
|
stat = os.lstat(f)
|
|
|
if opts.size and not isdir:
|
|
|
facts.append('size=%s' % stat.st_size)
|
|
|
if opts.mode and not islink:
|
|
|
facts.append('mode=%o' % (stat.st_mode & 0o777))
|
|
|
if opts.links:
|
|
|
facts.append('links=%s' % stat.st_nlink)
|
|
|
if opts.newer:
|
|
|
# mtime might be in whole seconds so newer file might be same
|
|
|
if stat.st_mtime >= os.stat(opts.newer).st_mtime:
|
|
|
facts.append('newer than %s' % opts.newer)
|
|
|
else:
|
|
|
facts.append('older than %s' % opts.newer)
|
|
|
if opts.md5 and content is not None:
|
|
|
h = hashlib.md5(content)
|
|
|
facts.append('md5=%s' % h.hexdigest()[:opts.bytes])
|
|
|
if opts.sha1 and content is not None:
|
|
|
h = hashlib.sha1(content)
|
|
|
facts.append('sha1=%s' % h.hexdigest()[:opts.bytes])
|
|
|
if isstdin:
|
|
|
outfile.write(b', '.join(facts) + b'\n')
|
|
|
elif facts:
|
|
|
outfile.write(b'%s: %s\n' % (f.encode('utf-8'), b', '.join(facts)))
|
|
|
elif not quiet:
|
|
|
outfile.write(b'%s:\n' % f.encode('utf-8'))
|
|
|
if content is not None:
|
|
|
chunk = content
|
|
|
if not islink:
|
|
|
if opts.lines:
|
|
|
if opts.lines >= 0:
|
|
|
chunk = b''.join(chunk.splitlines(True)[:opts.lines])
|
|
|
else:
|
|
|
chunk = b''.join(chunk.splitlines(True)[opts.lines:])
|
|
|
if opts.bytes:
|
|
|
if opts.bytes >= 0:
|
|
|
chunk = chunk[:opts.bytes]
|
|
|
else:
|
|
|
chunk = chunk[opts.bytes:]
|
|
|
if opts.hexdump:
|
|
|
for i in range(0, len(chunk), 16):
|
|
|
s = chunk[i:i + 16]
|
|
|
outfile.write(b'%04x: %-47s |%s|\n' %
|
|
|
(i, b' '.join(
|
|
|
b'%02x' % ord(c) for c in iterbytes(s)),
|
|
|
re.sub(b'[^ -~]', b'.', s)))
|
|
|
if opts.dump:
|
|
|
if not quiet:
|
|
|
outfile.write(b'>>>\n')
|
|
|
outfile.write(chunk)
|
|
|
if not quiet:
|
|
|
if chunk.endswith(b'\n'):
|
|
|
outfile.write(b'<<<\n')
|
|
|
else:
|
|
|
outfile.write(b'\n<<< no trailing newline\n')
|
|
|
if opts.recurse and dirfiles:
|
|
|
assert not isstdin
|
|
|
visit(opts, dirfiles, outfile)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
|
parser = optparse.OptionParser("%prog [options] [filenames]")
|
|
|
parser.add_option("-t", "--type", action="store_true",
|
|
|
help="show file type (file or directory)")
|
|
|
parser.add_option("-m", "--mode", action="store_true",
|
|
|
help="show file mode")
|
|
|
parser.add_option("-l", "--links", action="store_true",
|
|
|
help="show number of links")
|
|
|
parser.add_option("-s", "--size", action="store_true",
|
|
|
help="show size of file")
|
|
|
parser.add_option("-n", "--newer", action="store",
|
|
|
help="check if file is newer (or same)")
|
|
|
parser.add_option("-r", "--recurse", action="store_true",
|
|
|
help="recurse into directories")
|
|
|
parser.add_option("-S", "--sha1", action="store_true",
|
|
|
help="show sha1 hash of the content")
|
|
|
parser.add_option("-M", "--md5", action="store_true",
|
|
|
help="show md5 hash of the content")
|
|
|
parser.add_option("-D", "--dump", action="store_true",
|
|
|
help="dump file content")
|
|
|
parser.add_option("-H", "--hexdump", action="store_true",
|
|
|
help="hexdump file content")
|
|
|
parser.add_option("-B", "--bytes", type="int",
|
|
|
help="number of characters to dump")
|
|
|
parser.add_option("-L", "--lines", type="int",
|
|
|
help="number of lines to dump")
|
|
|
parser.add_option("-q", "--quiet", action="store_true",
|
|
|
help="no default output")
|
|
|
(opts, filenames) = parser.parse_args(sys.argv[1:])
|
|
|
if not filenames:
|
|
|
filenames = ['-']
|
|
|
|
|
|
visit(opts, filenames, getattr(sys.stdout, 'buffer', sys.stdout))
|
|
|
|