author | Augie Fackler <augie@google.com> |
Mon, 18 Sep 2017 11:51:41 -0400 | |
branch | stable |
changeset 34195 | 920977f72c7b |
parent 32898 | c425b678df7c |
child 34270 | 3db2365d43e4 |
permissions | -rwxr-xr-x |
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#!/usr/bin/env python |
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""" |
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Utility for inspecting files in various ways. |
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|
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This tool is like the collection of tools found in a unix environment but are |
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cross platform and stable and suitable for our needs in the test suite. |
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This can be used instead of tools like: |
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[ |
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dd |
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find |
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head |
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hexdump |
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ls |
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md5sum |
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readlink |
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sha1sum |
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stat |
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tail |
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test |
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readlink.py |
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md5sum.py |
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""" |
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from __future__ import absolute_import |
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import glob |
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import hashlib |
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import optparse |
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import os |
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import re |
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import sys |
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def visit(opts, filenames, outfile): |
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"""Process filenames in the way specified in opts, writing output to |
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outfile.""" |
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for f in sorted(filenames): |
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isstdin = f == '-' |
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if not isstdin and not os.path.lexists(f): |
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outfile.write('%s: file not found\n' % f) |
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continue |
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quiet = opts.quiet and not opts.recurse or isstdin |
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isdir = os.path.isdir(f) |
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islink = os.path.islink(f) |
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isfile = os.path.isfile(f) and not islink |
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dirfiles = None |
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content = None |
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facts = [] |
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if isfile: |
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if opts.type: |
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facts.append('file') |
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if opts.hexdump or opts.dump or opts.md5: |
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content = open(f, 'rb').read() |
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elif islink: |
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if opts.type: |
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facts.append('link') |
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content = os.readlink(f) |
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elif isstdin: |
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content = sys.stdin.read() |
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if opts.size: |
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facts.append('size=%s' % len(content)) |
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elif isdir: |
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if opts.recurse or opts.type: |
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dirfiles = glob.glob(f + '/*') |
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facts.append('directory with %s files' % len(dirfiles)) |
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elif opts.type: |
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facts.append('type unknown') |
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if not isstdin: |
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stat = os.lstat(f) |
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if opts.size and not isdir: |
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facts.append('size=%s' % stat.st_size) |
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if opts.mode and not islink: |
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facts.append('mode=%o' % (stat.st_mode & 0o777)) |
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if opts.links: |
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facts.append('links=%s' % stat.st_nlink) |
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if opts.newer: |
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# mtime might be in whole seconds so newer file might be same |
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if stat.st_mtime >= os.stat(opts.newer).st_mtime: |
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facts.append('newer than %s' % opts.newer) |
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else: |
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facts.append('older than %s' % opts.newer) |
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if opts.md5 and content is not None: |
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h = hashlib.md5(content) |
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facts.append('md5=%s' % h.hexdigest()[:opts.bytes]) |
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if opts.sha1 and content is not None: |
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h = hashlib.sha1(content) |
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facts.append('sha1=%s' % h.hexdigest()[:opts.bytes]) |
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if isstdin: |
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outfile.write(', '.join(facts) + '\n') |
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elif facts: |
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outfile.write('%s: %s\n' % (f, ', '.join(facts))) |
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elif not quiet: |
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outfile.write('%s:\n' % f) |
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if content is not None: |
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chunk = content |
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if not islink: |
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if opts.lines: |
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if opts.lines >= 0: |
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chunk = ''.join(chunk.splitlines(True)[:opts.lines]) |
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else: |
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chunk = ''.join(chunk.splitlines(True)[opts.lines:]) |
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if opts.bytes: |
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if opts.bytes >= 0: |
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chunk = chunk[:opts.bytes] |
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else: |
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chunk = chunk[opts.bytes:] |
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if opts.hexdump: |
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for i in range(0, len(chunk), 16): |
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f: add whitespace around operator
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
26950
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110 |
s = chunk[i:i + 16] |
23860
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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|
111 |
outfile.write('%04x: %-47s |%s|\n' % |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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112 |
(i, ' '.join('%02x' % ord(c) for c in s), |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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113 |
re.sub('[^ -~]', '.', s))) |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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114 |
if opts.dump: |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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115 |
if not quiet: |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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116 |
outfile.write('>>>\n') |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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117 |
outfile.write(chunk) |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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118 |
if not quiet: |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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119 |
if chunk.endswith('\n'): |
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Mads Kiilerich <madski@unity3d.com>
parents:
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120 |
outfile.write('<<<\n') |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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121 |
else: |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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122 |
outfile.write('\n<<< no trailing newline\n') |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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123 |
if opts.recurse and dirfiles: |
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Mads Kiilerich <madski@unity3d.com>
parents:
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124 |
assert not isstdin |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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125 |
visit(opts, dirfiles, outfile) |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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126 |
|
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Mads Kiilerich <madski@unity3d.com>
parents:
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127 |
if __name__ == "__main__": |
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Mads Kiilerich <madski@unity3d.com>
parents:
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128 |
parser = optparse.OptionParser("%prog [options] [filenames]") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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129 |
parser.add_option("-t", "--type", action="store_true", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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130 |
help="show file type (file or directory)") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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131 |
parser.add_option("-m", "--mode", action="store_true", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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132 |
help="show file mode") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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133 |
parser.add_option("-l", "--links", action="store_true", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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134 |
help="show number of links") |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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135 |
parser.add_option("-s", "--size", action="store_true", |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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|
136 |
help="show size of file") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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137 |
parser.add_option("-n", "--newer", action="store", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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138 |
help="check if file is newer (or same)") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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139 |
parser.add_option("-r", "--recurse", action="store_true", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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140 |
help="recurse into directories") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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141 |
parser.add_option("-S", "--sha1", action="store_true", |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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142 |
help="show sha1 hash of the content") |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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143 |
parser.add_option("-M", "--md5", action="store_true", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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144 |
help="show md5 hash of the content") |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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145 |
parser.add_option("-D", "--dump", action="store_true", |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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146 |
help="dump file content") |
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tests: add 'f' tool for cross platform file operations in the tests
Mads Kiilerich <madski@unity3d.com>
parents:
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147 |
parser.add_option("-H", "--hexdump", action="store_true", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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148 |
help="hexdump file content") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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149 |
parser.add_option("-B", "--bytes", type="int", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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150 |
help="number of characters to dump") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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151 |
parser.add_option("-L", "--lines", type="int", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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|
152 |
help="number of lines to dump") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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153 |
parser.add_option("-q", "--quiet", action="store_true", |
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Mads Kiilerich <madski@unity3d.com>
parents:
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|
154 |
help="no default output") |
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Mads Kiilerich <madski@unity3d.com>
parents:
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|
155 |
(opts, filenames) = parser.parse_args(sys.argv[1:]) |
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Mads Kiilerich <madski@unity3d.com>
parents:
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156 |
if not filenames: |
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Mads Kiilerich <madski@unity3d.com>
parents:
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|
157 |
filenames = ['-'] |
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Mads Kiilerich <madski@unity3d.com>
parents:
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158 |
|
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Mads Kiilerich <madski@unity3d.com>
parents:
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159 |
visit(opts, filenames, sys.stdout) |