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annotate contrib/testparseutil.py @ 41702:a22321f2b1ee
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author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
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date | Wed, 13 Feb 2019 16:58:24 -0500 |
parents | 99b4c6d73a72 |
children | 5364ba1f796f |
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1 # testparseutil.py - utilities to parse test script for check tools |
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2 # |
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3 # Copyright 2018 FUJIWARA Katsunori <foozy@lares.dti.ne.jp> and others |
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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, print_function |
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9 |
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10 import abc |
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11 import re |
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12 import sys |
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13 |
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14 #################### |
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15 # for Python3 compatibility (almost comes from mercurial/pycompat.py) |
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16 |
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17 ispy3 = (sys.version_info[0] >= 3) |
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18 |
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19 def identity(a): |
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20 return a |
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21 |
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22 def _rapply(f, xs): |
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23 if xs is None: |
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24 # assume None means non-value of optional data |
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25 return xs |
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26 if isinstance(xs, (list, set, tuple)): |
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27 return type(xs)(_rapply(f, x) for x in xs) |
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28 if isinstance(xs, dict): |
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29 return type(xs)((_rapply(f, k), _rapply(f, v)) for k, v in xs.items()) |
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30 return f(xs) |
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31 |
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32 def rapply(f, xs): |
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33 if f is identity: |
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34 # fast path mainly for py2 |
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35 return xs |
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36 return _rapply(f, xs) |
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37 |
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38 if ispy3: |
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39 import builtins |
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40 |
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41 # TODO: .buffer might not exist if std streams were replaced; we'll need |
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42 # a silly wrapper to make a bytes stream backed by a unicode one. |
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43 stdin = sys.stdin.buffer |
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44 stdout = sys.stdout.buffer |
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45 stderr = sys.stderr.buffer |
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46 |
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47 def bytestr(s): |
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48 # tiny version of pycompat.bytestr |
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49 return s.encode('latin1') |
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50 |
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51 def sysstr(s): |
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52 if isinstance(s, builtins.str): |
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53 return s |
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54 return s.decode(u'latin-1') |
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55 |
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56 def opentext(f): |
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57 return open(f, 'rb') |
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58 else: |
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59 stdin = sys.stdin |
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60 stdout = sys.stdout |
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61 stderr = sys.stderr |
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62 |
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63 bytestr = str |
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64 sysstr = identity |
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65 |
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66 opentext = open |
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67 |
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68 def b2s(x): |
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69 # convert BYTES elements in "x" to SYSSTR recursively |
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70 return rapply(sysstr, x) |
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71 |
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72 def writeout(data): |
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73 # write "data" in BYTES into stdout |
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74 stdout.write(data) |
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75 |
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76 def writeerr(data): |
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77 # write "data" in BYTES into stderr |
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78 stderr.write(data) |
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79 |
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80 #################### |
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81 |
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82 class embeddedmatcher(object): |
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83 """Base class to detect embedded code fragments in *.t test script |
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84 """ |
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85 __metaclass__ = abc.ABCMeta |
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86 |
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87 def __init__(self, desc): |
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88 self.desc = desc |
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89 |
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90 @abc.abstractmethod |
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91 def startsat(self, line): |
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92 """Examine whether embedded code starts at line |
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93 |
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94 This can return arbitrary object, and it is used as 'ctx' for |
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95 subsequent method invocations. |
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96 """ |
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97 |
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98 @abc.abstractmethod |
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99 def endsat(self, ctx, line): |
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100 """Examine whether embedded code ends at line""" |
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101 |
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102 @abc.abstractmethod |
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103 def isinside(self, ctx, line): |
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104 """Examine whether line is inside embedded code, if not yet endsat |
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105 """ |
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106 |
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107 @abc.abstractmethod |
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108 def ignores(self, ctx): |
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109 """Examine whether detected embedded code should be ignored""" |
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110 |
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111 @abc.abstractmethod |
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112 def filename(self, ctx): |
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113 """Return filename of embedded code |
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114 |
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115 If filename isn't specified for embedded code explicitly, this |
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116 returns None. |
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117 """ |
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118 |
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119 @abc.abstractmethod |
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120 def codeatstart(self, ctx, line): |
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121 """Return actual code at the start line of embedded code |
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122 |
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123 This might return None, if the start line doesn't contain |
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124 actual code. |
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125 """ |
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126 |
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127 @abc.abstractmethod |
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128 def codeatend(self, ctx, line): |
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129 """Return actual code at the end line of embedded code |
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130 |
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131 This might return None, if the end line doesn't contain actual |
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132 code. |
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133 """ |
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134 |
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135 @abc.abstractmethod |
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136 def codeinside(self, ctx, line): |
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137 """Return actual code at line inside embedded code""" |
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138 |
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139 def embedded(basefile, lines, errors, matchers): |
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140 """pick embedded code fragments up from given lines |
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141 |
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142 This is common parsing logic, which examines specified matchers on |
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143 given lines. |
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144 |
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145 :basefile: a name of a file, from which lines to be parsed come. |
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146 :lines: to be parsed (might be a value returned by "open(basefile)") |
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147 :errors: an array, into which messages for detected error are stored |
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148 :matchers: an array of embeddedmatcher objects |
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149 |
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150 This function yields '(filename, starts, ends, code)' tuple. |
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151 |
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152 :filename: a name of embedded code, if it is explicitly specified |
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153 (e.g. "foobar" of "cat >> foobar <<EOF"). |
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154 Otherwise, this is None |
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155 :starts: line number (1-origin), at which embedded code starts (inclusive) |
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156 :ends: line number (1-origin), at which embedded code ends (exclusive) |
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157 :code: extracted embedded code, which is single-stringified |
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158 |
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159 >>> class ambigmatcher(object): |
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160 ... # mock matcher class to examine implementation of |
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161 ... # "ambiguous matching" corner case |
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162 ... def __init__(self, desc, matchfunc): |
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163 ... self.desc = desc |
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164 ... self.matchfunc = matchfunc |
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165 ... def startsat(self, line): |
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166 ... return self.matchfunc(line) |
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167 >>> ambig1 = ambigmatcher(b'ambiguous #1', |
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168 ... lambda l: l.startswith(b' $ cat ')) |
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169 >>> ambig2 = ambigmatcher(b'ambiguous #2', |
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170 ... lambda l: l.endswith(b'<< EOF\\n')) |
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171 >>> lines = [b' $ cat > foo.py << EOF\\n'] |
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172 >>> errors = [] |
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173 >>> matchers = [ambig1, ambig2] |
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174 >>> list(t for t in embedded(b'<dummy>', lines, errors, matchers)) |
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175 [] |
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176 >>> b2s(errors) |
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177 ['<dummy>:1: ambiguous line for "ambiguous #1", "ambiguous #2"'] |
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178 |
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179 """ |
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180 matcher = None |
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181 ctx = filename = code = startline = None # for pyflakes |
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182 |
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183 for lineno, line in enumerate(lines, 1): |
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184 if not line.endswith(b'\n'): |
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185 line += b'\n' # to normalize EOF line |
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186 if matcher: # now, inside embedded code |
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187 if matcher.endsat(ctx, line): |
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188 codeatend = matcher.codeatend(ctx, line) |
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189 if codeatend is not None: |
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190 code.append(codeatend) |
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191 if not matcher.ignores(ctx): |
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192 yield (filename, startline, lineno, b''.join(code)) |
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193 matcher = None |
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194 # DO NOT "continue", because line might start next fragment |
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195 elif not matcher.isinside(ctx, line): |
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196 # this is an error of basefile |
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197 # (if matchers are implemented correctly) |
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198 errors.append(b'%s:%d: unexpected line for "%s"' |
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199 % (basefile, lineno, matcher.desc)) |
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200 # stop extracting embedded code by current 'matcher', |
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201 # because appearance of unexpected line might mean |
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202 # that expected end-of-embedded-code line might never |
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203 # appear |
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204 matcher = None |
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205 # DO NOT "continue", because line might start next fragment |
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206 else: |
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207 code.append(matcher.codeinside(ctx, line)) |
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208 continue |
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209 |
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210 # examine whether current line starts embedded code or not |
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211 assert not matcher |
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212 |
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213 matched = [] |
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214 for m in matchers: |
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215 ctx = m.startsat(line) |
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216 if ctx: |
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217 matched.append((m, ctx)) |
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218 if matched: |
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219 if len(matched) > 1: |
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220 # this is an error of matchers, maybe |
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221 errors.append(b'%s:%d: ambiguous line for %s' % |
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222 (basefile, lineno, |
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223 b', '.join([b'"%s"' % m.desc |
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224 for m, c in matched]))) |
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225 # omit extracting embedded code, because choosing |
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226 # arbitrary matcher from matched ones might fail to |
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227 # detect the end of embedded code as expected. |
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228 continue |
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229 matcher, ctx = matched[0] |
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230 filename = matcher.filename(ctx) |
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231 code = [] |
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232 codeatstart = matcher.codeatstart(ctx, line) |
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233 if codeatstart is not None: |
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234 code.append(codeatstart) |
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235 startline = lineno |
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236 else: |
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237 startline = lineno + 1 |
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238 |
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239 if matcher: |
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240 # examine whether EOF ends embedded code, because embedded |
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241 # code isn't yet ended explicitly |
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242 if matcher.endsat(ctx, b'\n'): |
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243 codeatend = matcher.codeatend(ctx, b'\n') |
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244 if codeatend is not None: |
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245 code.append(codeatend) |
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246 if not matcher.ignores(ctx): |
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247 yield (filename, startline, lineno + 1, b''.join(code)) |
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248 else: |
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249 # this is an error of basefile |
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250 # (if matchers are implemented correctly) |
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251 errors.append(b'%s:%d: unexpected end of file for "%s"' |
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252 % (basefile, lineno, matcher.desc)) |
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253 |
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254 # heredoc limit mark to ignore embedded code at check-code.py or so |
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255 heredocignorelimit = b'NO_CHECK_EOF' |
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256 |
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257 # the pattern to match against cases below, and to return a limit mark |
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258 # string as 'lname' group |
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259 # |
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260 # - << LIMITMARK |
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261 # - << "LIMITMARK" |
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262 # - << 'LIMITMARK' |
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263 heredoclimitpat = br'\s*<<\s*(?P<lquote>["\']?)(?P<limit>\w+)(?P=lquote)' |
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264 |
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265 class fileheredocmatcher(embeddedmatcher): |
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266 """Detect "cat > FILE << LIMIT" style embedded code |
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267 |
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268 >>> matcher = fileheredocmatcher(b'heredoc .py file', br'[^<]+\\.py') |
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269 >>> b2s(matcher.startsat(b' $ cat > file.py << EOF\\n')) |
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270 ('file.py', ' > EOF\\n') |
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271 >>> b2s(matcher.startsat(b' $ cat >>file.py <<EOF\\n')) |
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272 ('file.py', ' > EOF\\n') |
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273 >>> b2s(matcher.startsat(b' $ cat> \\x27any file.py\\x27<< "EOF"\\n')) |
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274 ('any file.py', ' > EOF\\n') |
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275 >>> b2s(matcher.startsat(b" $ cat > file.py << 'ANYLIMIT'\\n")) |
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276 ('file.py', ' > ANYLIMIT\\n') |
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277 >>> b2s(matcher.startsat(b' $ cat<<ANYLIMIT>"file.py"\\n')) |
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278 ('file.py', ' > ANYLIMIT\\n') |
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279 >>> start = b' $ cat > file.py << EOF\\n' |
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280 >>> ctx = matcher.startsat(start) |
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281 >>> matcher.codeatstart(ctx, start) |
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282 >>> b2s(matcher.filename(ctx)) |
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283 'file.py' |
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284 >>> matcher.ignores(ctx) |
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285 False |
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286 >>> inside = b' > foo = 1\\n' |
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287 >>> matcher.endsat(ctx, inside) |
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288 False |
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289 >>> matcher.isinside(ctx, inside) |
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290 True |
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291 >>> b2s(matcher.codeinside(ctx, inside)) |
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292 'foo = 1\\n' |
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293 >>> end = b' > EOF\\n' |
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294 >>> matcher.endsat(ctx, end) |
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295 True |
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296 >>> matcher.codeatend(ctx, end) |
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297 >>> matcher.endsat(ctx, b' > EOFEOF\\n') |
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298 False |
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299 >>> ctx = matcher.startsat(b' $ cat > file.py << NO_CHECK_EOF\\n') |
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300 >>> matcher.ignores(ctx) |
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301 True |
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302 """ |
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303 _prefix = b' > ' |
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304 |
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305 def __init__(self, desc, namepat): |
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306 super(fileheredocmatcher, self).__init__(desc) |
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307 |
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308 # build the pattern to match against cases below (and ">>" |
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309 # variants), and to return a target filename string as 'name' |
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310 # group |
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311 # |
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312 # - > NAMEPAT |
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313 # - > "NAMEPAT" |
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314 # - > 'NAMEPAT' |
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315 namepat = (br'\s*>>?\s*(?P<nquote>["\']?)(?P<name>%s)(?P=nquote)' |
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316 % namepat) |
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317 self._fileres = [ |
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318 # "cat > NAME << LIMIT" case |
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319 re.compile(br' \$ \s*cat' + namepat + heredoclimitpat), |
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320 # "cat << LIMIT > NAME" case |
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321 re.compile(br' \$ \s*cat' + heredoclimitpat + namepat), |
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322 ] |
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323 |
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324 def startsat(self, line): |
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325 # ctx is (filename, END-LINE-OF-EMBEDDED-CODE) tuple |
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326 for filere in self._fileres: |
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327 matched = filere.match(line) |
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328 if matched: |
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329 return (matched.group('name'), |
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330 b' > %s\n' % matched.group('limit')) |
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331 |
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332 def endsat(self, ctx, line): |
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333 return ctx[1] == line |
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334 |
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335 def isinside(self, ctx, line): |
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336 return line.startswith(self._prefix) |
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337 |
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338 def ignores(self, ctx): |
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339 return b' > %s\n' % heredocignorelimit == ctx[1] |
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340 |
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341 def filename(self, ctx): |
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342 return ctx[0] |
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343 |
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344 def codeatstart(self, ctx, line): |
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345 return None # no embedded code at start line |
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346 |
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347 def codeatend(self, ctx, line): |
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348 return None # no embedded code at end line |
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349 |
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350 def codeinside(self, ctx, line): |
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351 return line[len(self._prefix):] # strip prefix |
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352 |
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353 #### |
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354 # for embedded python script |
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355 |
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356 class pydoctestmatcher(embeddedmatcher): |
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357 """Detect ">>> code" style embedded python code |
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358 |
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359 >>> matcher = pydoctestmatcher() |
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360 >>> startline = b' >>> foo = 1\\n' |
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361 >>> matcher.startsat(startline) |
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362 True |
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363 >>> matcher.startsat(b' ... foo = 1\\n') |
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364 False |
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365 >>> ctx = matcher.startsat(startline) |
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366 >>> matcher.filename(ctx) |
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367 >>> matcher.ignores(ctx) |
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368 False |
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369 >>> b2s(matcher.codeatstart(ctx, startline)) |
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370 'foo = 1\\n' |
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371 >>> inside = b' >>> foo = 1\\n' |
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372 >>> matcher.endsat(ctx, inside) |
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373 False |
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374 >>> matcher.isinside(ctx, inside) |
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375 True |
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376 >>> b2s(matcher.codeinside(ctx, inside)) |
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377 'foo = 1\\n' |
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378 >>> inside = b' ... foo = 1\\n' |
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379 >>> matcher.endsat(ctx, inside) |
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380 False |
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381 >>> matcher.isinside(ctx, inside) |
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382 True |
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383 >>> b2s(matcher.codeinside(ctx, inside)) |
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384 'foo = 1\\n' |
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385 >>> inside = b' expected output\\n' |
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386 >>> matcher.endsat(ctx, inside) |
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387 False |
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388 >>> matcher.isinside(ctx, inside) |
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389 True |
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390 >>> b2s(matcher.codeinside(ctx, inside)) |
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391 '\\n' |
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392 >>> inside = b' \\n' |
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393 >>> matcher.endsat(ctx, inside) |
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394 False |
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395 >>> matcher.isinside(ctx, inside) |
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396 True |
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397 >>> b2s(matcher.codeinside(ctx, inside)) |
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398 '\\n' |
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399 >>> end = b' $ foo bar\\n' |
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400 >>> matcher.endsat(ctx, end) |
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401 True |
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402 >>> matcher.codeatend(ctx, end) |
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403 >>> end = b'\\n' |
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404 >>> matcher.endsat(ctx, end) |
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405 True |
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406 >>> matcher.codeatend(ctx, end) |
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407 """ |
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408 _prefix = b' >>> ' |
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409 _prefixre = re.compile(br' (>>>|\.\.\.) ') |
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410 |
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411 # If a line matches against not _prefixre but _outputre, that line |
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412 # is "an expected output line" (= not a part of code fragment). |
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413 # |
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414 # Strictly speaking, a line matching against "(#if|#else|#endif)" |
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415 # is also treated similarly in "inline python code" semantics by |
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416 # run-tests.py. But "directive line inside inline python code" |
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417 # should be rejected by Mercurial reviewers. Therefore, this |
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418 # regexp does not matche against such directive lines. |
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419 _outputre = re.compile(br' $| [^$]') |
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420 |
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421 def __init__(self): |
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422 super(pydoctestmatcher, self).__init__(b"doctest style python code") |
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423 |
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424 def startsat(self, line): |
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425 # ctx is "True" |
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426 return line.startswith(self._prefix) |
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427 |
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428 def endsat(self, ctx, line): |
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429 return not (self._prefixre.match(line) or self._outputre.match(line)) |
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430 |
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431 def isinside(self, ctx, line): |
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432 return True # always true, if not yet ended |
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433 |
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434 def ignores(self, ctx): |
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435 return False # should be checked always |
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436 |
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437 def filename(self, ctx): |
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438 return None # no filename |
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439 |
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440 def codeatstart(self, ctx, line): |
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441 return line[len(self._prefix):] # strip prefix ' >>> '/' ... ' |
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442 |
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443 def codeatend(self, ctx, line): |
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444 return None # no embedded code at end line |
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445 |
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446 def codeinside(self, ctx, line): |
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447 if self._prefixre.match(line): |
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448 return line[len(self._prefix):] # strip prefix ' >>> '/' ... ' |
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449 return b'\n' # an expected output line is treated as an empty line |
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450 |
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451 class pyheredocmatcher(embeddedmatcher): |
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452 """Detect "python << LIMIT" style embedded python code |
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453 |
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454 >>> matcher = pyheredocmatcher() |
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455 >>> b2s(matcher.startsat(b' $ python << EOF\\n')) |
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456 ' > EOF\\n' |
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457 >>> b2s(matcher.startsat(b' $ $PYTHON <<EOF\\n')) |
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458 ' > EOF\\n' |
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459 >>> b2s(matcher.startsat(b' $ "$PYTHON"<< "EOF"\\n')) |
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460 ' > EOF\\n' |
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461 >>> b2s(matcher.startsat(b" $ $PYTHON << 'ANYLIMIT'\\n")) |
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462 ' > ANYLIMIT\\n' |
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463 >>> matcher.startsat(b' $ "$PYTHON" < EOF\\n') |
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464 >>> start = b' $ python << EOF\\n' |
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465 >>> ctx = matcher.startsat(start) |
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466 >>> matcher.codeatstart(ctx, start) |
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467 >>> matcher.filename(ctx) |
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468 >>> matcher.ignores(ctx) |
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469 False |
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470 >>> inside = b' > foo = 1\\n' |
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471 >>> matcher.endsat(ctx, inside) |
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472 False |
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473 >>> matcher.isinside(ctx, inside) |
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474 True |
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475 >>> b2s(matcher.codeinside(ctx, inside)) |
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476 'foo = 1\\n' |
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477 >>> end = b' > EOF\\n' |
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478 >>> matcher.endsat(ctx, end) |
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479 True |
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480 >>> matcher.codeatend(ctx, end) |
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481 >>> matcher.endsat(ctx, b' > EOFEOF\\n') |
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482 False |
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483 >>> ctx = matcher.startsat(b' $ python << NO_CHECK_EOF\\n') |
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484 >>> matcher.ignores(ctx) |
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485 True |
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486 """ |
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487 _prefix = b' > ' |
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488 |
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489 _startre = re.compile(br' \$ (\$PYTHON|"\$PYTHON"|python).*' + |
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490 heredoclimitpat) |
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491 |
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492 def __init__(self): |
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493 super(pyheredocmatcher, self).__init__(b"heredoc python invocation") |
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494 |
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495 def startsat(self, line): |
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496 # ctx is END-LINE-OF-EMBEDDED-CODE |
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497 matched = self._startre.match(line) |
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498 if matched: |
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499 return b' > %s\n' % matched.group('limit') |
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500 |
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501 def endsat(self, ctx, line): |
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502 return ctx == line |
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503 |
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504 def isinside(self, ctx, line): |
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505 return line.startswith(self._prefix) |
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506 |
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507 def ignores(self, ctx): |
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508 return b' > %s\n' % heredocignorelimit == ctx |
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509 |
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510 def filename(self, ctx): |
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511 return None # no filename |
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512 |
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513 def codeatstart(self, ctx, line): |
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514 return None # no embedded code at start line |
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515 |
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516 def codeatend(self, ctx, line): |
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517 return None # no embedded code at end line |
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518 |
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519 def codeinside(self, ctx, line): |
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520 return line[len(self._prefix):] # strip prefix |
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521 |
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522 _pymatchers = [ |
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523 pydoctestmatcher(), |
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524 pyheredocmatcher(), |
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525 # use '[^<]+' instead of '\S+', in order to match against |
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526 # paths including whitespaces |
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527 fileheredocmatcher(b'heredoc .py file', br'[^<]+\.py'), |
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528 ] |
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529 |
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530 def pyembedded(basefile, lines, errors): |
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531 return embedded(basefile, lines, errors, _pymatchers) |
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532 |
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533 #### |
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534 # for embedded shell script |
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535 |
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536 _shmatchers = [ |
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537 # use '[^<]+' instead of '\S+', in order to match against |
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538 # paths including whitespaces |
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539 fileheredocmatcher(b'heredoc .sh file', br'[^<]+\.sh'), |
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540 ] |
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541 |
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542 def shembedded(basefile, lines, errors): |
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543 return embedded(basefile, lines, errors, _shmatchers) |
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544 |
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545 #### |
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546 # for embedded hgrc configuration |
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547 |
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548 _hgrcmatchers = [ |
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549 # use '[^<]+' instead of '\S+', in order to match against |
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550 # paths including whitespaces |
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551 fileheredocmatcher(b'heredoc hgrc file', |
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552 br'(([^/<]+/)+hgrc|\$HGRCPATH|\${HGRCPATH})'), |
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553 ] |
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554 |
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555 def hgrcembedded(basefile, lines, errors): |
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556 return embedded(basefile, lines, errors, _hgrcmatchers) |
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557 |
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558 #### |
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559 |
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560 if __name__ == "__main__": |
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561 import optparse |
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562 import sys |
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563 |
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564 def showembedded(basefile, lines, embeddedfunc, opts): |
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565 errors = [] |
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566 for name, starts, ends, code in embeddedfunc(basefile, lines, errors): |
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567 if not name: |
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568 name = b'<anonymous>' |
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569 writeout(b"%s:%d: %s starts\n" % (basefile, starts, name)) |
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570 if opts.verbose and code: |
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571 writeout(b" |%s\n" % |
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572 b"\n |".join(l for l in code.splitlines())) |
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573 writeout(b"%s:%d: %s ends\n" % (basefile, ends, name)) |
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574 for e in errors: |
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575 writeerr(b"%s\n" % e) |
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576 return len(errors) |
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577 |
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578 def applyembedded(args, embeddedfunc, opts): |
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579 ret = 0 |
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580 if args: |
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581 for f in args: |
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582 with opentext(f) as fp: |
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583 if showembedded(bytestr(f), fp, embeddedfunc, opts): |
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584 ret = 1 |
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585 else: |
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586 lines = [l for l in stdin.readlines()] |
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587 if showembedded(b'<stdin>', lines, embeddedfunc, opts): |
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588 ret = 1 |
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589 return ret |
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590 |
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591 commands = {} |
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592 def command(name, desc): |
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593 def wrap(func): |
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594 commands[name] = (desc, func) |
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595 return wrap |
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596 |
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597 @command("pyembedded", "detect embedded python script") |
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598 def pyembeddedcmd(args, opts): |
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599 return applyembedded(args, pyembedded, opts) |
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600 |
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601 @command("shembedded", "detect embedded shell script") |
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602 def shembeddedcmd(args, opts): |
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603 return applyembedded(args, shembedded, opts) |
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604 |
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605 @command("hgrcembedded", "detect embedded hgrc configuration") |
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606 def hgrcembeddedcmd(args, opts): |
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607 return applyembedded(args, hgrcembedded, opts) |
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608 |
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609 availablecommands = "\n".join([" - %s: %s" % (key, value[0]) |
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610 for key, value in commands.items()]) |
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611 |
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612 parser = optparse.OptionParser("""%prog COMMAND [file ...] |
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613 |
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614 Pick up embedded code fragments from given file(s) or stdin, and list |
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615 up start/end lines of them in standard compiler format |
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616 ("FILENAME:LINENO:"). |
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617 |
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618 Available commands are: |
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619 """ + availablecommands + """ |
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620 """) |
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621 parser.add_option("-v", "--verbose", |
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622 help="enable additional output (e.g. actual code)", |
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623 action="store_true") |
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624 (opts, args) = parser.parse_args() |
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625 |
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626 if not args or args[0] not in commands: |
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627 parser.print_help() |
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628 sys.exit(255) |
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629 |
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630 sys.exit(commands[args[0]][1](args[1:], opts)) |