Mercurial > hg
annotate mercurial/graphmod.py @ 20555:4add43865a9b
ancestors: remove unnecessary handling of 'left'
If one of the initial nodes also is an ancestor then that most be the only
ancestor. There is no need for additional bookkeeping.
author | Mads Kiilerich <madski@unity3d.com> |
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date | Mon, 24 Feb 2014 22:42:13 +0100 |
parents | e441657b372b |
children | e87bd3485a07 |
rev | line source |
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6691 | 1 # Revision graph generator for Mercurial |
2 # | |
3 # Copyright 2008 Dirkjan Ochtman <dirkjan@ochtman.nl> | |
4 # Copyright 2007 Joel Rosdahl <joel@rosdahl.net> | |
5 # | |
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6 # This software may be used and distributed according to the terms of the |
10263 | 7 # GNU General Public License version 2 or any later version. |
6691 | 8 |
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9 """supports walking the history as DAGs suitable for graphical output |
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10 |
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11 The most basic format we use is that of:: |
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12 |
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13 (id, type, data, [parentids]) |
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14 |
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15 The node and parent ids are arbitrary integers which identify a node in the |
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16 context of the graph returned. Type is a constant specifying the node type. |
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17 Data depends on type. |
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18 """ |
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19 |
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20 from mercurial.node import nullrev |
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21 import util |
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22 |
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23 CHANGESET = 'C' |
6691 | 24 |
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25 def dagwalker(repo, revs): |
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26 """cset DAG generator yielding (id, CHANGESET, ctx, [parentids]) tuples |
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27 |
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28 This generator function walks through revisions (which should be ordered |
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29 from bigger to lower). It returns a tuple for each node. The node and parent |
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30 ids are arbitrary integers which identify a node in the context of the graph |
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31 returned. |
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32 """ |
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33 if not revs: |
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34 return |
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35 |
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36 cl = repo.changelog |
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37 lowestrev = min(revs) |
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38 gpcache = {} |
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39 |
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40 knownrevs = set(revs) |
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41 for rev in revs: |
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42 ctx = repo[rev] |
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43 parents = sorted(set([p.rev() for p in ctx.parents() |
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44 if p.rev() in knownrevs])) |
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45 mpars = [p.rev() for p in ctx.parents() if |
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46 p.rev() != nullrev and p.rev() not in parents] |
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47 |
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48 for mpar in mpars: |
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49 gp = gpcache.get(mpar) |
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50 if gp is None: |
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51 gp = gpcache[mpar] = grandparent(cl, lowestrev, revs, mpar) |
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52 if not gp: |
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53 parents.append(mpar) |
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54 else: |
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55 parents.extend(g for g in gp if g not in parents) |
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56 |
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57 yield (ctx.rev(), CHANGESET, ctx, parents) |
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58 |
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59 def nodes(repo, nodes): |
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60 """cset DAG generator yielding (id, CHANGESET, ctx, [parentids]) tuples |
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61 |
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62 This generator function walks the given nodes. It only returns parents |
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63 that are in nodes, too. |
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64 """ |
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65 include = set(nodes) |
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66 for node in nodes: |
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67 ctx = repo[node] |
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68 parents = set([p.rev() for p in ctx.parents() if p.node() in include]) |
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69 yield (ctx.rev(), CHANGESET, ctx, sorted(parents)) |
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70 |
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71 def colored(dag, repo): |
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72 """annotates a DAG with colored edge information |
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73 |
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74 For each DAG node this function emits tuples:: |
6691 | 75 |
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76 (id, type, data, (col, color), [(col, nextcol, color)]) |
6691 | 77 |
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78 with the following new elements: |
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79 |
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80 - Tuple (col, color) with column and color index for the current node |
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81 - A list of tuples indicating the edges between the current node and its |
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82 parents. |
6691 | 83 """ |
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84 seen = [] |
6691 | 85 colors = {} |
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86 newcolor = 1 |
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87 config = {} |
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88 |
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89 for key, val in repo.ui.configitems('graph'): |
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90 if '.' in key: |
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91 branch, setting = key.rsplit('.', 1) |
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92 # Validation |
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93 if setting == "width" and val.isdigit(): |
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94 config.setdefault(branch, {})[setting] = int(val) |
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95 elif setting == "color" and val.isalnum(): |
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96 config.setdefault(branch, {})[setting] = val |
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97 |
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98 if config: |
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99 getconf = util.lrucachefunc( |
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100 lambda rev: config.get(repo[rev].branch(), {})) |
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101 else: |
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102 getconf = lambda rev: {} |
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103 |
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104 for (cur, type, data, parents) in dag: |
6691 | 105 |
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106 # Compute seen and next |
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107 if cur not in seen: |
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108 seen.append(cur) # new head |
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109 colors[cur] = newcolor |
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110 newcolor += 1 |
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112 col = seen.index(cur) |
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113 color = colors.pop(cur) |
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114 next = seen[:] |
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116 # Add parents to next |
6691 | 117 addparents = [p for p in parents if p not in next] |
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118 next[col:col + 1] = addparents |
6691 | 119 |
120 # Set colors for the parents | |
121 for i, p in enumerate(addparents): | |
122 if not i: | |
123 colors[p] = color | |
124 else: | |
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125 colors[p] = newcolor |
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126 newcolor += 1 |
6691 | 127 |
128 # Add edges to the graph | |
129 edges = [] | |
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130 for ecol, eid in enumerate(seen): |
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131 if eid in next: |
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132 bconf = getconf(eid) |
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133 edges.append(( |
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134 ecol, next.index(eid), colors[eid], |
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135 bconf.get('width', -1), |
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136 bconf.get('color', ''))) |
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137 elif eid == cur: |
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139 bconf = getconf(p) |
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140 edges.append(( |
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141 ecol, next.index(p), color, |
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142 bconf.get('width', -1), |
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143 bconf.get('color', ''))) |
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145 # Yield and move on | |
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146 yield (cur, type, data, (col, color), edges) |
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147 seen = next |
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148 |
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149 def grandparent(cl, lowestrev, roots, head): |
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150 """Return all ancestors of head in roots which revision is |
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151 greater or equal to lowestrev. |
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152 """ |
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153 pending = set([head]) |
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154 seen = set() |
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155 kept = set() |
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156 llowestrev = max(nullrev, lowestrev) |
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157 while pending: |
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158 r = pending.pop() |
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159 if r >= llowestrev and r not in seen: |
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160 if r in roots: |
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161 kept.add(r) |
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162 else: |
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163 pending.update([p for p in cl.parentrevs(r)]) |
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164 seen.add(r) |
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165 return sorted(kept) |
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166 |
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167 def asciiedges(type, char, lines, seen, rev, parents): |
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168 """adds edge info to changelog DAG walk suitable for ascii()""" |
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169 if rev not in seen: |
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170 seen.append(rev) |
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171 nodeidx = seen.index(rev) |
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172 |
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173 knownparents = [] |
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174 newparents = [] |
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175 for parent in parents: |
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176 if parent in seen: |
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177 knownparents.append(parent) |
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178 else: |
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179 newparents.append(parent) |
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180 |
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181 ncols = len(seen) |
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182 nextseen = seen[:] |
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183 nextseen[nodeidx:nodeidx + 1] = newparents |
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184 edges = [(nodeidx, nextseen.index(p)) for p in knownparents if p != nullrev] |
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185 |
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186 while len(newparents) > 2: |
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187 # ascii() only knows how to add or remove a single column between two |
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188 # calls. Nodes with more than two parents break this constraint so we |
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189 # introduce intermediate expansion lines to grow the active node list |
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190 # slowly. |
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191 edges.append((nodeidx, nodeidx)) |
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192 edges.append((nodeidx, nodeidx + 1)) |
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193 nmorecols = 1 |
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194 yield (type, char, lines, (nodeidx, edges, ncols, nmorecols)) |
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195 char = '\\' |
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196 lines = [] |
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197 nodeidx += 1 |
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198 ncols += 1 |
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199 edges = [] |
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200 del newparents[0] |
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201 |
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202 if len(newparents) > 0: |
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203 edges.append((nodeidx, nodeidx)) |
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204 if len(newparents) > 1: |
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205 edges.append((nodeidx, nodeidx + 1)) |
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206 nmorecols = len(nextseen) - ncols |
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207 seen[:] = nextseen |
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208 yield (type, char, lines, (nodeidx, edges, ncols, nmorecols)) |
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209 |
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210 def _fixlongrightedges(edges): |
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211 for (i, (start, end)) in enumerate(edges): |
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212 if end > start: |
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213 edges[i] = (start, end + 1) |
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214 |
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215 def _getnodelineedgestail( |
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216 node_index, p_node_index, n_columns, n_columns_diff, p_diff, fix_tail): |
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217 if fix_tail and n_columns_diff == p_diff and n_columns_diff != 0: |
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218 # Still going in the same non-vertical direction. |
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219 if n_columns_diff == -1: |
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220 start = max(node_index + 1, p_node_index) |
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221 tail = ["|", " "] * (start - node_index - 1) |
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222 tail.extend(["/", " "] * (n_columns - start)) |
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223 return tail |
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224 else: |
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225 return ["\\", " "] * (n_columns - node_index - 1) |
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226 else: |
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227 return ["|", " "] * (n_columns - node_index - 1) |
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228 |
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229 def _drawedges(edges, nodeline, interline): |
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230 for (start, end) in edges: |
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231 if start == end + 1: |
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232 interline[2 * end + 1] = "/" |
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233 elif start == end - 1: |
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234 interline[2 * start + 1] = "\\" |
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235 elif start == end: |
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236 interline[2 * start] = "|" |
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237 else: |
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238 if 2 * end >= len(nodeline): |
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239 continue |
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240 nodeline[2 * end] = "+" |
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241 if start > end: |
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242 (start, end) = (end, start) |
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243 for i in range(2 * start + 1, 2 * end): |
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244 if nodeline[i] != "+": |
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245 nodeline[i] = "-" |
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246 |
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247 def _getpaddingline(ni, n_columns, edges): |
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248 line = [] |
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249 line.extend(["|", " "] * ni) |
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250 if (ni, ni - 1) in edges or (ni, ni) in edges: |
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251 # (ni, ni - 1) (ni, ni) |
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252 # | | | | | | | | |
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253 # +---o | | o---+ |
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254 # | | c | | c | | |
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255 # | |/ / | |/ / |
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256 # | | | | | | |
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257 c = "|" |
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258 else: |
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259 c = " " |
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260 line.extend([c, " "]) |
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261 line.extend(["|", " "] * (n_columns - ni - 1)) |
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262 return line |
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263 |
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264 def asciistate(): |
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265 """returns the initial value for the "state" argument to ascii()""" |
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266 return [0, 0] |
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267 |
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268 def ascii(ui, state, type, char, text, coldata): |
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269 """prints an ASCII graph of the DAG |
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270 |
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271 takes the following arguments (one call per node in the graph): |
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272 |
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273 - ui to write to |
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274 - Somewhere to keep the needed state in (init to asciistate()) |
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275 - Column of the current node in the set of ongoing edges. |
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276 - Type indicator of node data, usually 'C' for changesets. |
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277 - Payload: (char, lines): |
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278 - Character to use as node's symbol. |
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279 - List of lines to display as the node's text. |
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280 - Edges; a list of (col, next_col) indicating the edges between |
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281 the current node and its parents. |
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282 - Number of columns (ongoing edges) in the current revision. |
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283 - The difference between the number of columns (ongoing edges) |
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284 in the next revision and the number of columns (ongoing edges) |
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285 in the current revision. That is: -1 means one column removed; |
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286 0 means no columns added or removed; 1 means one column added. |
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287 """ |
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288 |
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289 idx, edges, ncols, coldiff = coldata |
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290 assert -2 < coldiff < 2 |
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291 if coldiff == -1: |
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292 # Transform |
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293 # |
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294 # | | | | | | |
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295 # o | | into o---+ |
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296 # |X / |/ / |
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297 # | | | | |
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298 _fixlongrightedges(edges) |
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299 |
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300 # add_padding_line says whether to rewrite |
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301 # |
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302 # | | | | | | | | |
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303 # | o---+ into | o---+ |
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304 # | / / | | | # <--- padding line |
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305 # o | | | / / |
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306 # o | | |
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307 add_padding_line = (len(text) > 2 and coldiff == -1 and |
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308 [x for (x, y) in edges if x + 1 < y]) |
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309 |
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310 # fix_nodeline_tail says whether to rewrite |
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311 # |
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312 # | | o | | | | o | | |
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313 # | | |/ / | | |/ / |
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314 # | o | | into | o / / # <--- fixed nodeline tail |
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315 # | |/ / | |/ / |
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316 # o | | o | | |
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317 fix_nodeline_tail = len(text) <= 2 and not add_padding_line |
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318 |
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319 # nodeline is the line containing the node character (typically o) |
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320 nodeline = ["|", " "] * idx |
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321 nodeline.extend([char, " "]) |
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322 |
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323 nodeline.extend( |
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324 _getnodelineedgestail(idx, state[1], ncols, coldiff, |
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325 state[0], fix_nodeline_tail)) |
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326 |
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327 # shift_interline is the line containing the non-vertical |
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328 # edges between this entry and the next |
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329 shift_interline = ["|", " "] * idx |
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330 if coldiff == -1: |
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331 n_spaces = 1 |
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332 edge_ch = "/" |
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333 elif coldiff == 0: |
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334 n_spaces = 2 |
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335 edge_ch = "|" |
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336 else: |
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337 n_spaces = 3 |
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338 edge_ch = "\\" |
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339 shift_interline.extend(n_spaces * [" "]) |
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340 shift_interline.extend([edge_ch, " "] * (ncols - idx - 1)) |
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341 |
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342 # draw edges from the current node to its parents |
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343 _drawedges(edges, nodeline, shift_interline) |
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344 |
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345 # lines is the list of all graph lines to print |
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346 lines = [nodeline] |
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347 if add_padding_line: |
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348 lines.append(_getpaddingline(idx, ncols, edges)) |
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349 lines.append(shift_interline) |
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350 |
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351 # make sure that there are as many graph lines as there are |
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352 # log strings |
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353 while len(text) < len(lines): |
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354 text.append("") |
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355 if len(lines) < len(text): |
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356 extra_interline = ["|", " "] * (ncols + coldiff) |
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357 while len(lines) < len(text): |
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358 lines.append(extra_interline) |
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359 |
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360 # print lines |
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361 indentation_level = max(ncols, ncols + coldiff) |
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362 for (line, logstr) in zip(lines, text): |
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363 ln = "%-*s %s" % (2 * indentation_level, "".join(line), logstr) |
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364 ui.write(ln.rstrip() + '\n') |
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365 |
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366 # ... and start over |
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367 state[0] = coldiff |
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368 state[1] = idx |