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