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@@ -0,0 +1,158 b'' | |||||
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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) |
@@ -0,0 +1,87 b'' | |||||
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1 | Tests of the file helper tool | |||
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2 | ||||
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3 | $ f -h | |||
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4 | Usage: f [options] [filenames] | |||
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5 | ||||
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6 | Options: | |||
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7 | -h, --help show this help message and exit | |||
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8 | -t, --type show file type (file or directory) | |||
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9 | -m, --mode show file mode | |||
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10 | -l, --links show number of links | |||
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11 | -s, --size show size of file | |||
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12 | -n NEWER, --newer=NEWER | |||
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13 | check if file is newer (or same) | |||
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14 | -r, --recurse recurse into directories | |||
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15 | -S, --sha1 show sha1 hash of the content | |||
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16 | -M, --md5 show md5 hash of the content | |||
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17 | -D, --dump dump file content | |||
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18 | -H, --hexdump hexdump file content | |||
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19 | -B BYTES, --bytes=BYTES | |||
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20 | number of characters to dump | |||
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21 | -L LINES, --lines=LINES | |||
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22 | number of lines to dump | |||
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23 | -q, --quiet no default output | |||
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24 | ||||
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25 | $ mkdir dir | |||
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26 | $ cd dir | |||
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27 | ||||
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28 | $ f --size | |||
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29 | size=0 | |||
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30 | ||||
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31 | $ echo hello | f --md5 --size | |||
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32 | size=6, md5=b1946ac92492d2347c6235b4d2611184 | |||
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33 | ||||
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34 | $ f foo | |||
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35 | foo: file not found | |||
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36 | ||||
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37 | $ echo foo > foo | |||
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38 | $ f foo | |||
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39 | foo: | |||
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40 | ||||
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41 | $ f foo --mode | |||
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42 | foo: mode=644 | |||
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43 | ||||
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44 | $ seq 10 > bar | |||
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45 | $ chmod +x bar | |||
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46 | $ f bar --newer foo --mode --type --size --dump --links --bytes 7 | |||
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47 | bar: file, size=21, mode=755, links=1, newer than foo | |||
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48 | >>> | |||
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49 | 1 | |||
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50 | 2 | |||
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51 | 3 | |||
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52 | 4 | |||
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53 | <<< no trailing newline | |||
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54 | ||||
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55 | $ ln bar baz | |||
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56 | $ f bar -n baz -l --hexdump -t --sha1 --lines=9 -B 20 | |||
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57 | bar: file, links=2, newer than baz, sha1=612ca68d0305c821750a | |||
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58 | 0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a |1.2.3.4.5.6.7.8.| | |||
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59 | 0010: 39 0a |9.| | |||
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60 | ||||
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61 | $ ln -s yadda l | |||
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62 | $ f . --recurse -MStmsB4 | |||
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63 | .: directory with 4 files, size=120, mode=755 | |||
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64 | ./bar: file, size=21, mode=755, md5=3b03, sha1=612c | |||
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65 | ./baz: file, size=21, mode=755, md5=3b03, sha1=612c | |||
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66 | ./foo: file, size=4, mode=644, md5=d3b0, sha1=f1d2 | |||
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67 | ./l: link, size=5, mode=777, md5=2faa, sha1=af93 | |||
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68 | ||||
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69 | $ f --quiet bar -DL 3 | |||
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70 | 1 | |||
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71 | 2 | |||
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72 | 3 | |||
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73 | ||||
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74 | $ cd .. | |||
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75 | ||||
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76 | $ f -qr dir -HB 17 | |||
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77 | dir: directory with 4 files | |||
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78 | dir/bar: | |||
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79 | 0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a |1.2.3.4.5.6.7.8.| | |||
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80 | 0010: 39 |9| | |||
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81 | dir/baz: | |||
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82 | 0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a |1.2.3.4.5.6.7.8.| | |||
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83 | 0010: 39 |9| | |||
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84 | dir/foo: | |||
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85 | 0000: 66 6f 6f 0a |foo.| | |||
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86 | dir/l: | |||
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87 | 0000: 79 61 64 64 61 |yadda| |
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