~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/diff.py

• browse files at revision 1063
• compare with another revision
• download diff
• download tarball
• view history from revision 1063

• reverse the comparison (1063 to 1185.65.19)
• stop comparing with revision 1185.65.19

Show diffs side-by-side

added

removed

bzrlib/diff.py

 

1

#! /usr/bin/env python

1

2

# -*- coding: UTF-8 -*-

2

3

 

3

4

# This program is free software; you can redistribute it and/or modify

22

23

# invoke callbacks on an object.  That object can either accumulate a

23

24

# list, write them out directly, etc etc.

24

25

 

25

 

def internal_diff(old_filename, oldlines, new_filename, newlines, to_file):

 

26

def internal_diff(old_label, oldlines, new_label, newlines, to_file):

26

27

    import difflib

27

28

    

28

29

    # FIXME: difflib is wrong if there is no trailing newline.

42

43

        return

43

44

 

44

45

    ud = difflib.unified_diff(oldlines, newlines,

45

 

                              fromfile=old_filename+'\t', 

46

 

                              tofile=new_filename+'\t')

 

46

                              fromfile=old_label, tofile=new_label)

47

47

 

48

 

    ud = list(ud)

49

48

    # work-around for difflib being too smart for its own good

50

49

    # if /dev/null is "1,0", patch won't recognize it as /dev/null

51

50

    if not oldlines:

 

51

        ud = list(ud)

52

52

        ud[2] = ud[2].replace('-1,0', '-0,0')

53

53

    elif not newlines:

 

54

        ud = list(ud)

54

55

        ud[2] = ud[2].replace('+1,0', '+0,0')

55

 

    # work around for difflib emitting random spaces after the label

56

 

    ud[0] = ud[0][:-2] + '\n'

57

 

    ud[1] = ud[1][:-2] + '\n'

58

56

 

59

57

    for line in ud:

60

58

        to_file.write(line)

63

61

    print >>to_file

64

62

 

65

63

 

66

 

def external_diff(old_filename, oldlines, new_filename, newlines, to_file,

 

64

 

 

65

 

 

66

def external_diff(old_label, oldlines, new_label, newlines, to_file,

67

67

                  diff_opts):

68

68

    """Display a diff by calling out to the external diff program."""

69

69

    import sys

98

98

        if not diff_opts:

99

99

            diff_opts = []

100

100

        diffcmd = ['diff',

101

 

                   '--label', old_filename+'\t',

 

101

                   '--label', old_label,

102

102

                   oldtmpf.name,

103

 

                   '--label', new_filename+'\t',

 

103

                   '--label', new_label,

104

104

                   newtmpf.name]

105

105

 

106

106

        # diff only allows one style to be specified; they don't override.

140

140

    finally:

141

141

        oldtmpf.close()                 # and delete

142

142

        newtmpf.close()

143

 

 

144

 

def show_diff(b, from_spec, specific_files, external_diff_options=None,

145

 

              revision2=None, output=None, b2=None):

 

143

    

 

144

 

 

145

 

 

146

def show_diff(b, revision, specific_files, external_diff_options=None,

 

147

              revision2=None):

146

148

    """Shortcut for showing the diff to the working tree.

147

149

 

148

150

    b

149

151

        Branch.

150

152

 

151

153

    revision

152

 

        None for 'basis tree', or otherwise the old revision to compare against.

 

154

        None for each, or otherwise the old revision to compare against.

153

155

    

154

156

    The more general form is show_diff_trees(), where the caller

155

157

    supplies any two trees.

156

158

    """

157

 

    if output is None:

158

 

        import sys

159

 

        output = sys.stdout

160

 

 

161

 

    if from_spec is None:

162

 

        if b2 is None:

163

 

            old_tree = b.basis_tree()

164

 

        else:

165

 

            old_tree = b.working_tree()

166

 

    else:

167

 

        old_tree = b.repository.revision_tree(from_spec.in_history(b).rev_id)

168

 

 

169

 

    if revision2 is None:

170

 

        if b2 is None:

171

 

            new_tree = b.working_tree()

172

 

        else:

173

 

            new_tree = b2.working_tree()

174

 

    else:

175

 

        new_tree = b.repository.revision_tree(revision2.in_history(b).rev_id)

176

 

 

177

 

    return show_diff_trees(old_tree, new_tree, output, specific_files,

178

 

                           external_diff_options)

 

159

    import sys

 

160

 

 

161

    if revision == None:

 

162

        old_tree = b.basis_tree()

 

163

    else:

 

164

        old_tree = b.revision_tree(b.lookup_revision(revision))

 

165

 

 

166

    if revision2 == None:

 

167

        new_tree = b.working_tree()

 

168

    else:

 

169

        new_tree = b.revision_tree(b.lookup_revision(revision2))

 

170

 

 

171

    show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,

 

172

                    external_diff_options)

179

173

 

180

174

 

181

175

 

214

208

    delta = compare_trees(old_tree, new_tree, want_unchanged=False,

215

209

                          specific_files=specific_files)

216

210

 

217

 

    has_changes = 0

218

211

    for path, file_id, kind in delta.removed:

219

 

        has_changes = 1

220

 

        print >>to_file, '=== removed %s %r' % (kind, path)

221

 

        old_tree.inventory[file_id].diff(diff_file, old_label + path, old_tree,

222

 

                                         DEVNULL, None, None, to_file)

 

212

        print >>to_file, '*** removed %s %r' % (kind, path)

 

213

        if kind == 'file':

 

214

            diff_file(old_label + path,

 

215

                      old_tree.get_file(file_id).readlines(),

 

216

                      DEVNULL, 

 

217

                      [],

 

218

                      to_file)

 

219

 

223

220

    for path, file_id, kind in delta.added:

224

 

        has_changes = 1

225

 

        print >>to_file, '=== added %s %r' % (kind, path)

226

 

        new_tree.inventory[file_id].diff(diff_file, new_label + path, new_tree,

227

 

                                         DEVNULL, None, None, to_file, 

228

 

                                         reverse=True)

229

 

    for (old_path, new_path, file_id, kind,

230

 

         text_modified, meta_modified) in delta.renamed:

231

 

        has_changes = 1

232

 

        prop_str = get_prop_change(meta_modified)

233

 

        print >>to_file, '=== renamed %s %r => %r%s' % (

234

 

                          kind, old_path, new_path, prop_str)

235

 

        _maybe_diff_file_or_symlink(old_label, old_path, old_tree, file_id,

236

 

                                    new_label, new_path, new_tree,

237

 

                                    text_modified, kind, to_file, diff_file)

238

 

    for path, file_id, kind, text_modified, meta_modified in delta.modified:

239

 

        has_changes = 1

240

 

        prop_str = get_prop_change(meta_modified)

241

 

        print >>to_file, '=== modified %s %r%s' % (kind, path, prop_str)

 

221

        print >>to_file, '*** added %s %r' % (kind, path)

 

222

        if kind == 'file':

 

223

            diff_file(DEVNULL,

 

224

                      [],

 

225

                      new_label + path,

 

226

                      new_tree.get_file(file_id).readlines(),

 

227

                      to_file)

 

228

 

 

229

    for old_path, new_path, file_id, kind, text_modified in delta.renamed:

 

230

        print >>to_file, '*** renamed %s %r => %r' % (kind, old_path, new_path)

242

231

        if text_modified:

243

 

            _maybe_diff_file_or_symlink(old_label, path, old_tree, file_id,

244

 

                                        new_label, path, new_tree,

245

 

                                        True, kind, to_file, diff_file)

246

 

    return has_changes

247

 

    

248

 

 

249

 

def get_prop_change(meta_modified):

250

 

    if meta_modified:

251

 

        return " (properties changed)"

252

 

    else:

253

 

        return  ""

254

 

 

255

 

 

256

 

def _maybe_diff_file_or_symlink(old_label, old_path, old_tree, file_id,

257

 

                                new_label, new_path, new_tree, text_modified,

258

 

                                kind, to_file, diff_file):

259

 

    if text_modified:

260

 

        new_entry = new_tree.inventory[file_id]

261

 

        old_tree.inventory[file_id].diff(diff_file,

262

 

                                         old_label + old_path, old_tree,

263

 

                                         new_label + new_path, new_entry, 

264

 

                                         new_tree, to_file)

 

232

            diff_file(old_label + old_path,

 

233

                      old_tree.get_file(file_id).readlines(),

 

234

                      new_label + new_path,

 

235

                      new_tree.get_file(file_id).readlines(),

 

236

                      to_file)

 

237

 

 

238

    for path, file_id, kind in delta.modified:

 

239

        print >>to_file, '*** modified %s %r' % (kind, path)

 

240

        if kind == 'file':

 

241

            diff_file(old_label + path,

 

242

                      old_tree.get_file(file_id).readlines(),

 

243

                      new_label + path,

 

244

                      new_tree.get_file(file_id).readlines(),

 

245

                      to_file)

 

246

 

 

247

 

 

248

 

 

249

 

 

250

 

• Older »

Loggerhead is a web-based interface for Breezy
Version: 2.0.1