annotate tests/f @ 23860:bead0c7b4f68

tests: add 'f' tool for cross platform file operations in the tests 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. The main reason it is "needed" now is for hexdump of revision branch cache to keep an eye on how it changes and make sure the format is stable. It is a very generic tool that can end up being used a lot in tests, so I gave it very generic name.
author Mads Kiilerich <madski@unity3d.com>
date Wed, 14 Jan 2015 01:15:26 +0100
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children 593a5cd709a2
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23860
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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 import sys, os, errno, re, glob, optparse
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27
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28 def visit(opts, filenames, outfile):
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29 """Process filenames in the way specified in opts, writing output to
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30 outfile."""
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31 for f in sorted(filenames):
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32 isstdin = f == '-'
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33 if not isstdin and not os.path.lexists(f):
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34 outfile.write('%s: file not found\n' % f)
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35 continue
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36 quiet = opts.quiet and not opts.recurse or isstdin
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37 isdir = os.path.isdir(f)
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38 islink = os.path.islink(f)
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39 isfile = os.path.isfile(f) and not islink
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40 dirfiles = None
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41 content = None
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42 facts = []
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43 if isfile:
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44 if opts.type:
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45 facts.append('file')
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46 if opts.hexdump or opts.dump or opts.md5:
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47 content = file(f).read()
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48 elif islink:
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49 if opts.type:
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50 facts.append('link')
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51 content = os.readlink(f)
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52 elif isstdin:
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53 content = sys.stdin.read()
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54 if opts.size:
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55 facts.append('size=%s' % len(content))
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56 elif isdir:
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57 if opts.recurse or opts.type:
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58 dirfiles = glob.glob(f + '/*')
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59 facts.append('directory with %s files' % len(dirfiles))
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60 elif opts.type:
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61 facts.append('type unknown')
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62 if not isstdin:
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63 stat = os.lstat(f)
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64 if opts.size:
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65 facts.append('size=%s' % stat.st_size)
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66 if opts.mode:
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67 facts.append('mode=%o' % (stat.st_mode & 0777))
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68 if opts.links:
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69 facts.append('links=%s' % stat.st_nlink)
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70 if opts.newer:
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71 # mtime might be in whole seconds so newer file might be same
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72 if stat.st_mtime >= os.stat(opts.newer).st_mtime:
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73 facts.append('newer than %s' % opts.newer)
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74 else:
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75 facts.append('older than %s' % opts.newer)
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76 if opts.md5 and content is not None:
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77 try:
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78 from hashlib import md5
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79 except ImportError:
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80 from md5 import md5
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81 facts.append('md5=%s' % md5(content).hexdigest()[:opts.bytes])
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82 if opts.sha1 and content is not None:
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83 try:
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84 from hashlib import sha1
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85 except ImportError:
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86 from sha import sha as sha1
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87 facts.append('sha1=%s' % sha1(content).hexdigest()[:opts.bytes])
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88 if isstdin:
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89 outfile.write(', '.join(facts) + '\n')
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90 elif facts:
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91 outfile.write('%s: %s\n' % (f, ', '.join(facts)))
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92 elif not quiet:
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93 outfile.write('%s:\n' % f)
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94 if content is not None:
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95 chunk = content
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96 if not islink:
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97 if opts.lines:
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98 if opts.lines >= 0:
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99 chunk = ''.join(chunk.splitlines(True)[:opts.lines])
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100 else:
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101 chunk = ''.join(chunk.splitlines(True)[opts.lines:])
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102 if opts.bytes:
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103 if opts.bytes >= 0:
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104 chunk = chunk[:opts.bytes]
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105 else:
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106 chunk = chunk[opts.bytes:]
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107 if opts.hexdump:
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108 for i in range(0, len(chunk), 16):
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109 s = chunk[i:i+16]
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110 outfile.write('%04x: %-47s |%s|\n' %
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111 (i, ' '.join('%02x' % ord(c) for c in s),
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112 re.sub('[^ -~]', '.', s)))
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113 if opts.dump:
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114 if not quiet:
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115 outfile.write('>>>\n')
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116 outfile.write(chunk)
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117 if not quiet:
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118 if chunk.endswith('\n'):
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119 outfile.write('<<<\n')
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120 else:
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121 outfile.write('\n<<< no trailing newline\n')
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122 if opts.recurse and dirfiles:
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123 assert not isstdin
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124 visit(opts, dirfiles, outfile)
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125
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126 if __name__ == "__main__":
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127 parser = optparse.OptionParser("%prog [options] [filenames]")
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128 parser.add_option("-t", "--type", action="store_true",
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129 help="show file type (file or directory)")
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130 parser.add_option("-m", "--mode", action="store_true",
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131 help="show file mode")
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132 parser.add_option("-l", "--links", action="store_true",
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133 help="show number of links")
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134 parser.add_option("-s", "--size", action="store_true",
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135 help="show size of file")
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136 parser.add_option("-n", "--newer", action="store",
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137 help="check if file is newer (or same)")
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138 parser.add_option("-r", "--recurse", action="store_true",
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139 help="recurse into directories")
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140 parser.add_option("-S", "--sha1", action="store_true",
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141 help="show sha1 hash of the content")
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142 parser.add_option("-M", "--md5", action="store_true",
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143 help="show md5 hash of the content")
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144 parser.add_option("-D", "--dump", action="store_true",
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145 help="dump file content")
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146 parser.add_option("-H", "--hexdump", action="store_true",
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147 help="hexdump file content")
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148 parser.add_option("-B", "--bytes", type="int",
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149 help="number of characters to dump")
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150 parser.add_option("-L", "--lines", type="int",
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151 help="number of lines to dump")
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152 parser.add_option("-q", "--quiet", action="store_true",
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153 help="no default output")
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154 (opts, filenames) = parser.parse_args(sys.argv[1:])
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155 if not filenames:
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156 filenames = ['-']
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157
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158 visit(opts, filenames, sys.stdout)