Mercurial > hg
annotate contrib/hgdiff @ 1639:dbfc04a55607
_hg_status improvements in bash_completion:
- Use "hg status -n" option instead of cut command.
- Sort status flags accoring to "hg status --help"
- Show deleted files instead of "hg remove"d for "hg remove"
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Thu, 26 Jan 2006 15:07:46 +0100 |
parents | 7da32bb3d1d3 |
children | e7e6504c4989 |
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1 #!/usr/bin/env python |
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2 |
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3 import os, sys, struct, stat |
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4 import difflib |
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5 import re |
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6 from optparse import OptionParser |
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7 from mercurial.bdiff import bdiff, blocks |
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8 |
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9 VERSION="0.2" |
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10 usage = "usage: %prog [options] file1 file2" |
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11 parser = OptionParser(usage=usage) |
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12 |
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13 parser.add_option("-d", "--difflib", action="store_true", default=False) |
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14 parser.add_option('-x', '--count', default=1) |
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15 parser.add_option('-c', '--context', type="int", default=3) |
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16 parser.add_option('-p', '--show-c-function', action="store_true", default=False) |
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17 parser.add_option('-w', '--ignore-all-space', action="store_true", |
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18 default=False) |
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19 |
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20 (options, args) = parser.parse_args() |
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21 |
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22 if not args: |
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23 parser.print_help() |
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24 sys.exit(1) |
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25 |
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26 # somewhat self contained replacement for difflib.unified_diff |
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27 # t1 and t2 are the text to be diffed |
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28 # l1 and l2 are the text broken up into lines |
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29 # header1 and header2 are the filenames for the diff output |
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30 # context is the number of context lines |
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31 # showfunc enables diff -p output |
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32 # ignorews ignores all whitespace changes in the diff |
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33 def bunidiff(t1, t2, l1, l2, header1, header2, context=3, showfunc=False, |
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34 ignorews=False): |
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35 def contextend(l, len): |
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36 ret = l + context |
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37 if ret > len: |
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38 ret = len |
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39 return ret |
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40 |
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41 def contextstart(l): |
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42 ret = l - context |
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43 if ret < 0: |
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44 return 0 |
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45 return ret |
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46 |
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47 def yieldhunk(hunk, header): |
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48 if header: |
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49 for x in header: |
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50 yield x |
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51 (astart, a2, bstart, b2, delta) = hunk |
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52 aend = contextend(a2, len(l1)) |
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53 alen = aend - astart |
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54 blen = b2 - bstart + aend - a2 |
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55 |
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56 func = "" |
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57 if showfunc: |
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58 # walk backwards from the start of the context |
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59 # to find a line starting with an alphanumeric char. |
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60 for x in xrange(astart, -1, -1): |
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61 t = l1[x] |
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62 if funcre.match(t): |
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63 func = ' ' + t[:40] |
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64 break |
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65 |
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66 yield "@@ -%d,%d +%d,%d @@%s\n" % (astart + 1, alen, |
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67 bstart + 1, blen, func) |
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68 for x in delta: |
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69 yield x |
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70 for x in xrange(a2, aend): |
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71 yield ' ' + l1[x] |
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72 |
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73 header = [ "--- %s\t\n" % header1, "+++ %s\t\n" % header2 ] |
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74 |
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75 if showfunc: |
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76 funcre = re.compile('\w') |
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77 if ignorews: |
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78 wsre = re.compile('[ \t]') |
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79 |
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80 # bdiff.blocks gives us the matching sequences in the files. The loop |
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81 # below finds the spaces between those matching sequences and translates |
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82 # them into diff output. |
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83 # |
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84 diff = blocks(t1, t2) |
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85 hunk = None |
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86 for i in xrange(len(diff)): |
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87 # The first match is special. |
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88 # we've either found a match starting at line 0 or a match later |
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89 # in the file. If it starts later, old and new below will both be |
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90 # empty and we'll continue to the next match. |
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91 if i > 0: |
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92 s = diff[i-1] |
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93 else: |
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94 s = [0, 0, 0, 0] |
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95 delta = [] |
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96 s1 = diff[i] |
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97 a1 = s[1] |
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98 a2 = s1[0] |
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99 b1 = s[3] |
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100 b2 = s1[2] |
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101 old = l1[a1:a2] |
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102 new = l2[b1:b2] |
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103 |
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104 # bdiff sometimes gives huge matches past eof, this check eats them, |
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105 # and deals with the special first match case described above |
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106 if not old and not new: |
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107 continue |
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108 |
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109 if ignorews: |
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110 wsold = wsre.sub('', "".join(old)) |
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111 wsnew = wsre.sub('', "".join(new)) |
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112 if wsold == wsnew: |
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113 continue |
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114 |
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115 astart = contextstart(a1) |
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116 bstart = contextstart(b1) |
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117 prev = None |
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118 if hunk: |
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119 # join with the previous hunk if it falls inside the context |
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120 if astart < hunk[1] + context + 1: |
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121 prev = hunk |
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122 astart = hunk[1] |
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123 bstart = hunk[3] |
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124 else: |
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125 for x in yieldhunk(hunk, header): |
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126 yield x |
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127 # we only want to yield the header if the files differ, and |
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128 # we only want to yield it once. |
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129 header = None |
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130 if prev: |
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131 # we've joined the previous hunk, record the new ending points. |
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132 hunk[1] = a2 |
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133 hunk[3] = b2 |
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134 delta = hunk[4] |
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135 else: |
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136 # create a new hunk |
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137 hunk = [ astart, a2, bstart, b2, delta ] |
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138 |
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139 delta[len(delta):] = [ ' ' + x for x in l1[astart:a1] ] |
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140 delta[len(delta):] = [ '-' + x for x in old ] |
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141 delta[len(delta):] = [ '+' + x for x in new ] |
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142 |
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143 if hunk: |
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144 for x in yieldhunk(hunk, header): |
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145 yield x |
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146 |
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147 # simple utility function to put all the |
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148 # files from a directory tree into a dict |
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149 def buildlist(names, top): |
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150 tlen = len(top) |
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151 for root, dirs, files in os.walk(top): |
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152 l = root[tlen + 1:] |
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153 for x in files: |
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154 p = os.path.join(root, x) |
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155 st = os.lstat(p) |
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156 if stat.S_ISREG(st.st_mode): |
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157 names[os.path.join(l, x)] = (st.st_dev, st.st_ino) |
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158 |
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159 def diff_files(file1, file2): |
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160 if file1 == None: |
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161 b = file(file2).read().splitlines(1) |
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162 l1 = "--- %s\n" % (file2) |
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163 l2 = "+++ %s\n" % (file2) |
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164 l3 = "@@ -0,0 +1,%d @@\n" % len(b) |
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165 l = [l1, l2, l3] + ["+" + e for e in b] |
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166 elif file2 == None: |
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167 a = file(file1).read().splitlines(1) |
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168 l1 = "--- %s\n" % (file1) |
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169 l2 = "+++ %s\n" % (file1) |
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170 l3 = "@@ -1,%d +0,0 @@\n" % len(a) |
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171 l = [l1, l2, l3] + ["-" + e for e in a] |
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172 else: |
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173 t1 = file(file1).read() |
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174 t2 = file(file2).read() |
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175 l1 = t1.splitlines(1) |
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176 l2 = t2.splitlines(1) |
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177 if options.difflib: |
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178 l = difflib.unified_diff(l1, l2, file1, file2) |
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179 else: |
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180 l = bunidiff(t1, t2, l1, l2, file1, file2, context=options.context, |
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181 showfunc=options.show_c_function, |
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182 ignorews=options.ignore_all_space) |
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183 for x in l: |
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184 if x[-1] != '\n': |
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185 x += "\n\ No newline at end of file\n" |
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186 print x, |
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187 |
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188 file1 = args[0] |
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189 file2 = args[1] |
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190 |
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191 if os.path.isfile(file1) and os.path.isfile(file2): |
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192 diff_files(file1, file2) |
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193 elif os.path.isdir(file1): |
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194 if not os.path.isdir(file2): |
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195 sys.stderr.write("file types don't match\n") |
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196 sys.exit(1) |
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197 |
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198 d1 = {} |
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199 d2 = {} |
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200 |
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201 buildlist(d1, file1) |
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202 buildlist(d2, file2) |
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203 keys = d1.keys() |
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204 keys.sort() |
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205 for x in keys: |
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206 if x not in d2: |
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207 f2 = None |
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208 else: |
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209 f2 = os.path.join(file2, x) |
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210 st1 = d1[x] |
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211 st2 = d2[x] |
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212 del d2[x] |
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213 if st1[0] == st2[0] and st1[1] == st2[1]: |
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214 sys.stderr.write("%s is a hard link\n" % x) |
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215 continue |
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216 x = os.path.join(file1, x) |
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217 diff_files(x, f2) |
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218 keys = d2.keys() |
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219 keys.sort() |
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220 for x in keys: |
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221 f1 = None |
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222 x = os.path.join(file2, x) |
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223 diff_files(f1, x) |
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224 |