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annotate roundup/support.py @ 3644:f35ece8f8ff7

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added StringHTMLProperty wrapped() method to wrap long lines in issue display also fixed a circular import in roundup.support
author Richard Jones <richard@users.sourceforge.net>
date Mon, 31 Jul 2006 01:30:05 +0000
parents fa7becc62534
children 193f316dbbe9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 """Implements various support classes and functions used in a number of
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2 places in Roundup code.
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3 """
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4
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5 __docformat__ = 'restructuredtext'
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6
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7 import os, time, sys, re
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8
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9 from sets import Set
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10
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11 class TruthDict:
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12 '''Returns True for valid keys, False for others.
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13 '''
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14 def __init__(self, keys):
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15 if keys:
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16 self.keys = {}
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17 for col in keys:
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18 self.keys[col] = 1
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19 else:
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20 self.__getitem__ = lambda name: 1
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21
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22 def __getitem__(self, name):
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23 return self.keys.has_key(name)
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24
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25 def ensureParentsExist(dest):
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26 if not os.path.exists(os.path.dirname(dest)):
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27 os.makedirs(os.path.dirname(dest))
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28
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29 class PrioList:
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30 '''Manages a sorted list.
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31
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32 Currently only implements method 'append' and iteration from a
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33 full list interface.
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34 Implementation: We manage a "sorted" status and sort on demand.
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35 Appending to the list will require re-sorting before use.
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36 >>> p = PrioList()
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37 >>> for i in 5,7,1,-1:
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38 ... p.append(i)
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39 ...
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40 >>> for k in p:
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41 ... print k
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42 ...
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43 -1
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44 1
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45 5
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46 7
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47
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48 '''
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49 def __init__(self):
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50 self.list = []
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51 self.sorted = True
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52
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53 def append(self, item):
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54 self.list.append(item)
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55 self.sorted = False
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56
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57 def __iter__(self):
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58 if not self.sorted:
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59 self.list.sort()
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60 self.sorted = True
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61 return iter(self.list)
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62
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63 class Progress:
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64 '''Progress display for console applications.
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65
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66 See __main__ block at end of file for sample usage.
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67 '''
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68 def __init__(self, info, sequence):
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69 self.info = info
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70 self.sequence = iter(sequence)
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71 self.total = len(sequence)
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72 self.start = self.now = time.time()
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73 self.num = 0
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74 self.stepsize = self.total / 100 or 1
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75 self.steptimes = []
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76 self.display()
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77
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78 def __iter__(self): return self
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79
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80 def next(self):
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81 self.num += 1
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82
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83 if self.num > self.total:
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84 print self.info, 'done', ' '*(75-len(self.info)-6)
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85 sys.stdout.flush()
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86 return self.sequence.next()
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87
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88 if self.num % self.stepsize:
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89 return self.sequence.next()
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90
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91 self.display()
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92 return self.sequence.next()
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93
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94 def display(self):
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95 # figure how long we've spent - guess how long to go
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96 now = time.time()
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97 steptime = now - self.now
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98 self.steptimes.insert(0, steptime)
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99 if len(self.steptimes) > 5:
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100 self.steptimes.pop()
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101 steptime = sum(self.steptimes) / len(self.steptimes)
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102 self.now = now
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103 eta = steptime * ((self.total - self.num)/self.stepsize)
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104
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105 # tell it like it is (or might be)
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106 if now - self.start > 3:
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107 M = eta / 60
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108 H = M / 60
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109 M = M % 60
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110 S = eta % 60
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111 if self.total:
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112 s = '%s %2d%% (ETA %02d:%02d:%02d)'%(self.info,
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113 self.num * 100. / self.total, H, M, S)
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114 else:
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115 s = '%s 0%% (ETA %02d:%02d:%02d)'%(self.info, H, M, S)
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116 elif self.total:
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117 s = '%s %2d%%'%(self.info, self.num * 100. / self.total)
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118 else:
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119 s = '%s %d done'%(self.info, self.num)
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120 sys.stdout.write(s + ' '*(75-len(s)) + '\r')
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121 sys.stdout.flush()
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122
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123 class Proptree(object):
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124 ''' Simple tree data structure for optimizing searching of properties
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125 '''
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126
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127 def __init__(self, db, cls, name, props, parent = None):
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128 self.db = db
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129 self.name = name
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130 self.props = props
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131 self.parent = parent
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132 self._val = None
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133 self.has_values = False
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134 self.cls = cls
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135 self.classname = None
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136 self.uniqname = None
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137 self.children = []
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138 self.propnames = {}
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139 if parent:
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140 self.root = parent.root
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141 self.prcls = self.parent.props [name]
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142 else:
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143 self.root = self
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144 self.seqno = 1
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145 self.id = self.root.seqno
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diff changeset
146 self.root.seqno += 1
3635
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diff changeset
147 if self.cls:
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diff changeset
148 self.classname = self.cls.classname
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53987aa153d2 Transitive-property support.
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diff changeset
149 self.uniqname = '%s%s' % (self.cls.classname, self.id)
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diff changeset
150 if not self.parent:
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diff changeset
151 self.uniqname = self.cls.classname
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diff changeset
152
3635
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diff changeset
153 def append(self, name):
53987aa153d2 Transitive-property support.
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154 """Append a property to self.children. Will create a new
53987aa153d2 Transitive-property support.
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diff changeset
155 propclass for the child.
53987aa153d2 Transitive-property support.
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156 """
3644
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157 import hyperdb
3635
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diff changeset
158 if name in self.propnames:
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diff changeset
159 return self.propnames [name]
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diff changeset
160 propclass = self.props [name]
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161 cls = None
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diff changeset
162 props = None
3635
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diff changeset
163 if isinstance(propclass, (hyperdb.Link, hyperdb.Multilink)):
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diff changeset
164 cls = self.db.getclass(propclass.classname)
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diff changeset
165 props = cls.getprops()
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diff changeset
166 child = self.__class__(self.db, cls, name, props, parent = self)
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diff changeset
167 self.children.append(child)
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168 self.propnames [name] = child
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diff changeset
169 return child
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170
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diff changeset
171 def _set_val(self, val):
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172 """Check if self._val is already defined. If yes, we compute the
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diff changeset
173 intersection of the old and the new value(s)
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174 """
3636
fa7becc62534 Of course for Links there is the same bug as I fixed before for multilinks.
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diff changeset
175 if self.has_values:
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diff changeset
176 v = self._val
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diff changeset
177 if not isinstance(self._val, type([])):
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diff changeset
178 v = [self._val]
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diff changeset
179 vals = Set(v)
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diff changeset
180 vals.intersection_update(val)
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diff changeset
181 self._val = [v for v in vals]
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diff changeset
182 else:
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diff changeset
183 self._val = val
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fa7becc62534 Of course for Links there is the same bug as I fixed before for multilinks.
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diff changeset
184 self.has_values = True
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185
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diff changeset
186 val = property(lambda self: self._val, _set_val)
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187
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diff changeset
188 def __iter__(self):
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189 """ Yield nodes in depth-first order -- visited nodes first """
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diff changeset
190 for p in self.children:
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191 yield p
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diff changeset
192 for c in p:
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193 yield c
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194
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195 LEFT = 'left'
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196 LEFTN = 'left no strip'
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197 RIGHT = 'right'
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198 CENTER = 'center'
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199
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200 def align(line, width=70, alignment=LEFTN):
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201 ''' Code from http://www.faqts.com/knowledge_base/view.phtml/aid/4476 '''
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202 if alignment == CENTER:
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diff changeset
203 line = line.strip()
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204 space = width - len(line)
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205 return ' '*(space/2) + line + ' '*(space/2 + space%2)
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diff changeset
206 elif alignment == RIGHT:
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diff changeset
207 line = line.rstrip()
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208 space = width - len(line)
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diff changeset
209 return ' '*space + line
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diff changeset
210 else:
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diff changeset
211 if alignment == LEFT:
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diff changeset
212 line = line.lstrip()
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diff changeset
213 space = width - len(line)
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diff changeset
214 return line + ' '*space
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diff changeset
215
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
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diff changeset
216
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
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diff changeset
217 def format_line(columns, positions, contents, spacer=' | ',
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diff changeset
218 collapse_whitespace=True, wsre=re.compile(r'\s+')):
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219 ''' Fill up a single row with data from the contents '''
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220 l = []
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221 data = 0
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diff changeset
222 for i in range(len(columns)):
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diff changeset
223 width, alignment = columns[i]
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diff changeset
224 content = contents[i]
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diff changeset
225 col = ''
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diff changeset
226 while positions[i] < len(content):
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
227 word = content[positions[i]]
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diff changeset
228 # if we hit a newline, honor it
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diff changeset
229 if '\n' in word:
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diff changeset
230 # chomp
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diff changeset
231 positions[i] += 1
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
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diff changeset
232 break
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
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diff changeset
233
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
234 # make sure this word fits
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
235 if col and len(word) + len(col) > width:
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
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parents: 3636
diff changeset
236 break
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
237
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
238 # no whitespace at start-of-line
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
239 if collapse_whitespace and wsre.match(word) and not col:
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
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diff changeset
240 # chomp
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
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diff changeset
241 positions[i] += 1
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
242 continue
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
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diff changeset
243
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
244 col += word
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
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diff changeset
245 # chomp
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
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diff changeset
246 positions[i] += 1
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
247 if col:
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
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diff changeset
248 data = 1
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
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diff changeset
249 col = align(col, width, alignment)
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
250 l.append(col)
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
251
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
252 if not data:
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
253 return ''
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
254 return spacer.join(l).rstrip()
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
255
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
256
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
257 def format_columns(columns, contents, spacer=' | ', collapse_whitespace=True,
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
258 splitre=re.compile(r'(\n|\r\n|\r|[ \t]+|\S+)')):
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
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diff changeset
259 ''' Format the contents into columns, with 'spacing' between the
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
260 columns
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
261 '''
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
262 assert len(columns) == len(contents), \
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
263 'columns and contents must be same length'
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
264
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
265 # split the text into words, spaces/tabs and newlines
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
266 for i in range(len(contents)):
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
267 contents[i] = splitre.findall(contents[i])
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
268
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
269 # now process line by line
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
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diff changeset
270 l = []
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
271 positions = [0]*len(contents)
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
272 while 1:
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
273 l.append(format_line(columns, positions, contents, spacer,
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
274 collapse_whitespace))
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
275
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
276 # are we done?
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
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parents: 3636
diff changeset
277 for i in range(len(contents)):
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
278 if positions[i] < len(contents[i]):
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
279 break
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
280 else:
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
281 break
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
282 return '\n'.join(l)
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
283
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
284 def wrap(text, width=75, alignment=LEFTN):
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
285 return format_columns(((width, alignment),), [text],
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
286 collapse_whitespace=False)
f35ece8f8ff7 added StringHTMLProperty wrapped() method to wrap long lines in issue display
Richard Jones <richard@users.sourceforge.net>
parents: 3636
diff changeset
287
2984
887d631ea2ba general use
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
288 # vim: set et sts=4 sw=4 :
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