Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/formatter.py @ 29886:307b20e5e505

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formatter: add context manager interface for convenience And port "hg files" to test it. As you can see, extra indent is necessary to port to this API. I don't think we should switch every fm.formatter() call to "with" statement.
author Yuya Nishihara <yuya@tcha.org>
date Mon, 29 Aug 2016 00:00:05 +0900
parents 5b886289a1ca
children e7cacb45c4be
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1 # formatter.py - generic output formatting for mercurial
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2 #
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3 # Copyright 2012 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import absolute_import
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9
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10 import os
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11
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12 from .i18n import _
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13 from .node import (
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14 hex,
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15 short,
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16 )
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17
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18 from . import (
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19 encoding,
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20 error,
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21 templatekw,
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22 templater,
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23 util,
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24 )
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25
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26 pickle = util.pickle
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27
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28 class _nullconverter(object):
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29 '''convert non-primitive data types to be processed by formatter'''
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30 @staticmethod
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31 def formatdate(date, fmt):
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32 '''convert date tuple to appropriate format'''
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33 return date
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34 @staticmethod
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35 def formatdict(data, key, value, fmt, sep):
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36 '''convert dict or key-value pairs to appropriate dict format'''
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37 # use plain dict instead of util.sortdict so that data can be
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38 # serialized as a builtin dict in pickle output
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39 return dict(data)
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40 @staticmethod
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41 def formatlist(data, name, fmt, sep):
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42 '''convert iterable to appropriate list format'''
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43 return list(data)
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44
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45 class baseformatter(object):
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46 def __init__(self, ui, topic, opts, converter):
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47 self._ui = ui
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48 self._topic = topic
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49 self._style = opts.get("style")
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50 self._template = opts.get("template")
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51 self._converter = converter
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52 self._item = None
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53 # function to convert node to string suitable for this output
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54 self.hexfunc = hex
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55 def __enter__(self):
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56 return self
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57 def __exit__(self, exctype, excvalue, traceback):
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58 if exctype is None:
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59 self.end()
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60 def __nonzero__(self):
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61 '''return False if we're not doing real templating so we can
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62 skip extra work'''
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63 return True
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64 def _showitem(self):
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65 '''show a formatted item once all data is collected'''
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66 pass
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67 def startitem(self):
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68 '''begin an item in the format list'''
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69 if self._item is not None:
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70 self._showitem()
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71 self._item = {}
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72 def formatdate(self, date, fmt='%a %b %d %H:%M:%S %Y %1%2'):
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73 '''convert date tuple to appropriate format'''
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74 return self._converter.formatdate(date, fmt)
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75 def formatdict(self, data, key='key', value='value', fmt='%s=%s', sep=' '):
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76 '''convert dict or key-value pairs to appropriate dict format'''
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77 return self._converter.formatdict(data, key, value, fmt, sep)
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78 def formatlist(self, data, name, fmt='%s', sep=' '):
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79 '''convert iterable to appropriate list format'''
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80 # name is mandatory argument for now, but it could be optional if
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81 # we have default template keyword, e.g. {item}
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82 return self._converter.formatlist(data, name, fmt, sep)
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83 def data(self, **data):
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84 '''insert data into item that's not shown in default output'''
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85 self._item.update(data)
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86 def write(self, fields, deftext, *fielddata, **opts):
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87 '''do default text output while assigning data to item'''
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88 fieldkeys = fields.split()
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89 assert len(fieldkeys) == len(fielddata)
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90 self._item.update(zip(fieldkeys, fielddata))
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91 def condwrite(self, cond, fields, deftext, *fielddata, **opts):
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92 '''do conditional write (primarily for plain formatter)'''
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93 fieldkeys = fields.split()
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94 assert len(fieldkeys) == len(fielddata)
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95 self._item.update(zip(fieldkeys, fielddata))
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96 def plain(self, text, **opts):
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97 '''show raw text for non-templated mode'''
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98 pass
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99 def nested(self, field):
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100 '''sub formatter to store nested data in the specified field'''
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101 self._item[field] = data = []
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102 return _nestedformatter(self._ui, self._converter, data)
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103 def end(self):
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104 '''end output for the formatter'''
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105 if self._item is not None:
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106 self._showitem()
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107
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108 class _nestedformatter(baseformatter):
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109 '''build sub items and store them in the parent formatter'''
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110 def __init__(self, ui, converter, data):
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111 baseformatter.__init__(self, ui, topic='', opts={}, converter=converter)
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112 self._data = data
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113 def _showitem(self):
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114 self._data.append(self._item)
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115
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116 def _iteritems(data):
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117 '''iterate key-value pairs in stable order'''
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118 if isinstance(data, dict):
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119 return sorted(data.iteritems())
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120 return data
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121
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122 class _plainconverter(object):
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123 '''convert non-primitive data types to text'''
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124 @staticmethod
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125 def formatdate(date, fmt):
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126 '''stringify date tuple in the given format'''
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127 return util.datestr(date, fmt)
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128 @staticmethod
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129 def formatdict(data, key, value, fmt, sep):
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130 '''stringify key-value pairs separated by sep'''
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131 return sep.join(fmt % (k, v) for k, v in _iteritems(data))
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132 @staticmethod
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133 def formatlist(data, name, fmt, sep):
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134 '''stringify iterable separated by sep'''
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135 return sep.join(fmt % e for e in data)
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136
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137 class plainformatter(baseformatter):
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138 '''the default text output scheme'''
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139 def __init__(self, ui, topic, opts):
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140 baseformatter.__init__(self, ui, topic, opts, _plainconverter)
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141 if ui.debugflag:
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142 self.hexfunc = hex
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143 else:
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144 self.hexfunc = short
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145 def __nonzero__(self):
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146 return False
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147 def startitem(self):
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148 pass
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149 def data(self, **data):
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150 pass
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151 def write(self, fields, deftext, *fielddata, **opts):
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152 self._ui.write(deftext % fielddata, **opts)
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153 def condwrite(self, cond, fields, deftext, *fielddata, **opts):
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154 '''do conditional write'''
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155 if cond:
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156 self._ui.write(deftext % fielddata, **opts)
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157 def plain(self, text, **opts):
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158 self._ui.write(text, **opts)
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159 def nested(self, field):
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160 # nested data will be directly written to ui
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161 return self
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162 def end(self):
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163 pass
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164
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165 class debugformatter(baseformatter):
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166 def __init__(self, ui, topic, opts):
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167 baseformatter.__init__(self, ui, topic, opts, _nullconverter)
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168 self._ui.write("%s = [\n" % self._topic)
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169 def _showitem(self):
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170 self._ui.write(" " + repr(self._item) + ",\n")
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171 def end(self):
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172 baseformatter.end(self)
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173 self._ui.write("]\n")
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174
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175 class pickleformatter(baseformatter):
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176 def __init__(self, ui, topic, opts):
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177 baseformatter.__init__(self, ui, topic, opts, _nullconverter)
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178 self._data = []
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179 def _showitem(self):
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180 self._data.append(self._item)
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181 def end(self):
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182 baseformatter.end(self)
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183 self._ui.write(pickle.dumps(self._data))
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184
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185 def _jsonifyobj(v):
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186 if isinstance(v, dict):
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187 xs = ['"%s": %s' % (encoding.jsonescape(k), _jsonifyobj(u))
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188 for k, u in sorted(v.iteritems())]
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189 return '{' + ', '.join(xs) + '}'
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190 elif isinstance(v, (list, tuple)):
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191 return '[' + ', '.join(_jsonifyobj(e) for e in v) + ']'
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192 elif v is None:
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193 return 'null'
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194 elif v is True:
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195 return 'true'
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196 elif v is False:
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197 return 'false'
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198 elif isinstance(v, (int, float)):
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199 return str(v)
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200 else:
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201 return '"%s"' % encoding.jsonescape(v)
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202
22428
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203 class jsonformatter(baseformatter):
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204 def __init__(self, ui, topic, opts):
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205 baseformatter.__init__(self, ui, topic, opts, _nullconverter)
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206 self._ui.write("[")
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207 self._ui._first = True
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208 def _showitem(self):
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209 if self._ui._first:
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210 self._ui._first = False
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211 else:
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212 self._ui.write(",")
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213
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214 self._ui.write("\n {\n")
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215 first = True
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216 for k, v in sorted(self._item.items()):
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217 if first:
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218 first = False
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219 else:
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220 self._ui.write(",\n")
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diff changeset
221 self._ui.write(' "%s": %s' % (k, _jsonifyobj(v)))
22428
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222 self._ui.write("\n }")
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223 def end(self):
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224 baseformatter.end(self)
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225 self._ui.write("\n]\n")
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226
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227 class _templateconverter(object):
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228 '''convert non-primitive data types to be processed by templater'''
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229 @staticmethod
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230 def formatdate(date, fmt):
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diff changeset
231 '''return date tuple'''
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232 return date
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233 @staticmethod
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234 def formatdict(data, key, value, fmt, sep):
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235 '''build object that can be evaluated as either plain string or dict'''
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diff changeset
236 data = util.sortdict(_iteritems(data))
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diff changeset
237 def f():
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238 yield _plainconverter.formatdict(data, key, value, fmt, sep)
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diff changeset
239 return templatekw._hybrid(f(), data, lambda k: {key: k, value: data[k]},
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240 lambda d: fmt % (d[key], d[value]))
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diff changeset
241 @staticmethod
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242 def formatlist(data, name, fmt, sep):
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243 '''build object that can be evaluated as either plain string or list'''
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diff changeset
244 data = list(data)
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diff changeset
245 def f():
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246 yield _plainconverter.formatlist(data, name, fmt, sep)
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diff changeset
247 return templatekw._hybrid(f(), data, lambda x: {name: x},
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diff changeset
248 lambda d: fmt % d[name])
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249
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250 class templateformatter(baseformatter):
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251 def __init__(self, ui, topic, opts):
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252 baseformatter.__init__(self, ui, topic, opts, _templateconverter)
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diff changeset
253 self._topic = topic
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diff changeset
254 self._t = gettemplater(ui, topic, opts.get('template', ''))
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diff changeset
255 def _showitem(self):
28384
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Kostia Balytskyi <ikostia@fb.com>
parents: 26587
diff changeset
256 g = self._t(self._topic, ui=self._ui, **self._item)
25513
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diff changeset
257 self._ui.write(templater.stringify(g))
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diff changeset
258
25511
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diff changeset
259 def lookuptemplate(ui, topic, tmpl):
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diff changeset
260 # looks like a literal template?
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diff changeset
261 if '{' in tmpl:
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diff changeset
262 return tmpl, None
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diff changeset
263
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diff changeset
264 # perhaps a stock style?
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diff changeset
265 if not os.path.split(tmpl)[0]:
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diff changeset
266 mapname = (templater.templatepath('map-cmdline.' + tmpl)
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diff changeset
267 or templater.templatepath(tmpl))
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diff changeset
268 if mapname and os.path.isfile(mapname):
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diff changeset
269 return None, mapname
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diff changeset
270
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diff changeset
271 # perhaps it's a reference to [templates]
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diff changeset
272 t = ui.config('templates', tmpl)
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diff changeset
273 if t:
28630
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diff changeset
274 return templater.unquotestring(t), None
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diff changeset
275
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diff changeset
276 if tmpl == 'list':
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277 ui.write(_("available styles: %s\n") % templater.stylelist())
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56b2bcea2529 error: get Abort from 'error' instead of 'util'
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278 raise error.Abort(_("specify a template"))
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279
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280 # perhaps it's a path to a map or a template
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281 if ('/' in tmpl or '\\' in tmpl) and os.path.isfile(tmpl):
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282 # is it a mapfile for a style?
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283 if os.path.basename(tmpl).startswith("map-"):
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284 return None, os.path.realpath(tmpl)
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285 tmpl = open(tmpl).read()
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286 return tmpl, None
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287
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288 # constant string?
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289 return tmpl, None
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290
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291 def gettemplater(ui, topic, spec):
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292 tmpl, mapfile = lookuptemplate(ui, topic, spec)
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Yuya Nishihara <yuya@tcha.org>
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293 assert not (tmpl and mapfile)
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294 if mapfile:
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295 return templater.templater.frommapfile(mapfile)
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296 return maketemplater(ui, topic, tmpl)
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297
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298 def maketemplater(ui, topic, tmpl, filters=None, cache=None):
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299 """Create a templater from a string template 'tmpl'"""
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Yuya Nishihara <yuya@tcha.org>
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300 aliases = ui.configitems('templatealias')
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301 t = templater.templater(filters=filters, cache=cache, aliases=aliases)
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302 if tmpl:
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303 t.cache[topic] = tmpl
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304 return t
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305
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306 def formatter(ui, topic, opts):
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307 template = opts.get("template", "")
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308 if template == "json":
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309 return jsonformatter(ui, topic, opts)
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310 elif template == "pickle":
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311 return pickleformatter(ui, topic, opts)
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312 elif template == "debug":
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313 return debugformatter(ui, topic, opts)
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314 elif template != "":
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315 return templateformatter(ui, topic, opts)
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316 # developer config: ui.formatdebug
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317 elif ui.configbool('ui', 'formatdebug'):
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318 return debugformatter(ui, topic, opts)
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319 # deprecated config: ui.formatjson
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320 elif ui.configbool('ui', 'formatjson'):
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321 return jsonformatter(ui, topic, opts)
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322 return plainformatter(ui, topic, opts)