annotate tests/f @ 35472:c1f7037c2ded

tests: teach `f` to handle sha256 checksums
author Matt Harbison <matt_harbison@yahoo.com>
date Wed, 20 Dec 2017 20:46:33 -0500
parents ea4d27aac557
children c69e78ef2b54
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python
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2
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3 """
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4 Utility for inspecting files in various ways.
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5
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6 This tool is like the collection of tools found in a unix environment but are
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7 cross platform and stable and suitable for our needs in the test suite.
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8
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9 This can be used instead of tools like:
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10 [
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11 dd
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12 find
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13 head
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14 hexdump
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15 ls
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16 md5sum
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17 readlink
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18 sha1sum
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19 stat
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20 tail
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21 test
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22 readlink.py
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23 md5sum.py
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24 """
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25
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26 from __future__ import absolute_import
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27
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28 import glob
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29 import hashlib
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30 import optparse
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31 import os
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32 import re
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33 import sys
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34
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35 # Python 3 adapters
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36 ispy3 = (sys.version_info[0] >= 3)
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37 if ispy3:
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38 def iterbytes(s):
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39 for i in range(len(s)):
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40 yield s[i:i + 1]
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41 else:
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42 iterbytes = iter
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43
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44 def visit(opts, filenames, outfile):
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45 """Process filenames in the way specified in opts, writing output to
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46 outfile."""
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47 for f in sorted(filenames):
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48 isstdin = f == '-'
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49 if not isstdin and not os.path.lexists(f):
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50 outfile.write(b'%s: file not found\n' % f.encode('utf-8'))
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51 continue
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52 quiet = opts.quiet and not opts.recurse or isstdin
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53 isdir = os.path.isdir(f)
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54 islink = os.path.islink(f)
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55 isfile = os.path.isfile(f) and not islink
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56 dirfiles = None
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57 content = None
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58 facts = []
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59 if isfile:
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60 if opts.type:
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61 facts.append('file')
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62 if any((opts.hexdump, opts.dump, opts.md5, opts.sha1, opts.sha256)):
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63 content = open(f, 'rb').read()
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64 elif islink:
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65 if opts.type:
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66 facts.append('link')
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67 content = os.readlink(f)
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68 elif isstdin:
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69 content = getattr(sys.stdin, 'buffer', sys.stdin).read()
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70 if opts.size:
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71 facts.append('size=%s' % len(content))
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72 elif isdir:
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73 if opts.recurse or opts.type:
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74 dirfiles = glob.glob(f + '/*')
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75 facts.append('directory with %s files' % len(dirfiles))
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76 elif opts.type:
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77 facts.append('type unknown')
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78 if not isstdin:
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79 stat = os.lstat(f)
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80 if opts.size and not isdir:
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81 facts.append('size=%s' % stat.st_size)
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82 if opts.mode and not islink:
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83 facts.append('mode=%o' % (stat.st_mode & 0o777))
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84 if opts.links:
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85 facts.append('links=%s' % stat.st_nlink)
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86 if opts.newer:
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87 # mtime might be in whole seconds so newer file might be same
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88 if stat.st_mtime >= os.stat(opts.newer).st_mtime:
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89 facts.append('newer than %s' % opts.newer)
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90 else:
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91 facts.append('older than %s' % opts.newer)
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92 if opts.md5 and content is not None:
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93 h = hashlib.md5(content)
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94 facts.append('md5=%s' % h.hexdigest()[:opts.bytes])
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95 if opts.sha1 and content is not None:
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96 h = hashlib.sha1(content)
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97 facts.append('sha1=%s' % h.hexdigest()[:opts.bytes])
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98 if opts.sha256 and content is not None:
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99 h = hashlib.sha256(content)
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100 facts.append('sha256=%s' % h.hexdigest()[:opts.bytes])
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101 if isstdin:
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102 outfile.write(b', '.join(facts) + b'\n')
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103 elif facts:
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104 outfile.write(b'%s: %s\n' % (f.encode('utf-8'), b', '.join(facts)))
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105 elif not quiet:
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106 outfile.write(b'%s:\n' % f.encode('utf-8'))
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107 if content is not None:
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108 chunk = content
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109 if not islink:
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110 if opts.lines:
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111 if opts.lines >= 0:
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112 chunk = b''.join(chunk.splitlines(True)[:opts.lines])
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113 else:
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114 chunk = b''.join(chunk.splitlines(True)[opts.lines:])
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115 if opts.bytes:
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116 if opts.bytes >= 0:
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117 chunk = chunk[:opts.bytes]
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118 else:
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119 chunk = chunk[opts.bytes:]
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120 if opts.hexdump:
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121 for i in range(0, len(chunk), 16):
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122 s = chunk[i:i + 16]
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123 outfile.write(b'%04x: %-47s |%s|\n' %
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124 (i, b' '.join(
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125 b'%02x' % ord(c) for c in iterbytes(s)),
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126 re.sub(b'[^ -~]', b'.', s)))
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127 if opts.dump:
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128 if not quiet:
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129 outfile.write(b'>>>\n')
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130 outfile.write(chunk)
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131 if not quiet:
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132 if chunk.endswith(b'\n'):
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133 outfile.write(b'<<<\n')
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134 else:
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135 outfile.write(b'\n<<< no trailing newline\n')
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136 if opts.recurse and dirfiles:
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137 assert not isstdin
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138 visit(opts, dirfiles, outfile)
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139
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140 if __name__ == "__main__":
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141 parser = optparse.OptionParser("%prog [options] [filenames]")
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142 parser.add_option("-t", "--type", action="store_true",
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143 help="show file type (file or directory)")
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144 parser.add_option("-m", "--mode", action="store_true",
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145 help="show file mode")
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146 parser.add_option("-l", "--links", action="store_true",
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147 help="show number of links")
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148 parser.add_option("-s", "--size", action="store_true",
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149 help="show size of file")
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150 parser.add_option("-n", "--newer", action="store",
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151 help="check if file is newer (or same)")
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152 parser.add_option("-r", "--recurse", action="store_true",
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153 help="recurse into directories")
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154 parser.add_option("-S", "--sha1", action="store_true",
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155 help="show sha1 hash of the content")
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156 parser.add_option("", "--sha256", action="store_true",
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157 help="show sha256 hash of the content")
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158 parser.add_option("-M", "--md5", action="store_true",
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159 help="show md5 hash of the content")
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160 parser.add_option("-D", "--dump", action="store_true",
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161 help="dump file content")
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162 parser.add_option("-H", "--hexdump", action="store_true",
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163 help="hexdump file content")
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164 parser.add_option("-B", "--bytes", type="int",
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165 help="number of characters to dump")
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166 parser.add_option("-L", "--lines", type="int",
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167 help="number of lines to dump")
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168 parser.add_option("-q", "--quiet", action="store_true",
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169 help="no default output")
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170 (opts, filenames) = parser.parse_args(sys.argv[1:])
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171 if not filenames:
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172 filenames = ['-']
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173
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174 visit(opts, filenames, getattr(sys.stdout, 'buffer', sys.stdout))