Mercurial > hg
annotate mercurial/fileset.py @ 25804:f0a77cb6316a
parser: extract function that tests if next token may start new term
Future patches will separate primary expression and prefix operator actions.
This function will be used to resolve ambiguity of them.
This is a step to remove the old-style revexpr parser. We need both ":" and
":y" operators for backward compatibility.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Sun, 05 Jul 2015 11:54:14 +0900 |
parents | 272ff3680bf3 |
children | e71e5629e006 |
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1 # fileset.py - file set queries for mercurial |
11275 | 2 # |
3 # Copyright 2010 Matt Mackall <mpm@selenic.com> | |
4 # | |
5 # This software may be used and distributed according to the terms of the | |
6 # GNU General Public License version 2 or any later version. | |
7 | |
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8 import re |
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9 import parser, error, util, merge |
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10 from i18n import _ |
11275 | 11 |
12 elements = { | |
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13 # token-type: binding-strength, prefix, infix, suffix |
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14 "(": (20, ("group", 1, ")"), ("func", 1, ")"), None), |
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15 "-": (5, ("negate", 19), ("minus", 5), None), |
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16 "not": (10, ("not", 10), None, None), |
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17 "!": (10, ("not", 10), None, None), |
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18 "and": (5, None, ("and", 5), None), |
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19 "&": (5, None, ("and", 5), None), |
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20 "or": (4, None, ("or", 4), None), |
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21 "|": (4, None, ("or", 4), None), |
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22 "+": (4, None, ("or", 4), None), |
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23 ",": (2, None, ("list", 2), None), |
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24 ")": (0, None, None, None), |
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25 "symbol": (0, ("symbol",), None, None), |
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26 "string": (0, ("string",), None, None), |
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27 "end": (0, None, None, None), |
11275 | 28 } |
29 | |
30 keywords = set(['and', 'or', 'not']) | |
31 | |
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32 globchars = ".*{}[]?/\\_" |
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33 |
11275 | 34 def tokenize(program): |
35 pos, l = 0, len(program) | |
36 while pos < l: | |
37 c = program[pos] | |
38 if c.isspace(): # skip inter-token whitespace | |
39 pass | |
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40 elif c in "(),-|&+!": # handle simple operators |
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41 yield (c, None, pos) |
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42 elif (c in '"\'' or c == 'r' and |
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43 program[pos:pos + 2] in ("r'", 'r"')): # handle quoted strings |
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44 if c == 'r': |
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45 pos += 1 |
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46 c = program[pos] |
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47 decode = lambda x: x |
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48 else: |
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49 decode = lambda x: x.decode('string-escape') |
11275 | 50 pos += 1 |
51 s = pos | |
52 while pos < l: # find closing quote | |
53 d = program[pos] | |
54 if d == '\\': # skip over escaped characters | |
55 pos += 2 | |
56 continue | |
57 if d == c: | |
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58 yield ('string', decode(program[s:pos]), s) |
11275 | 59 break |
60 pos += 1 | |
61 else: | |
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62 raise error.ParseError(_("unterminated string"), s) |
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63 elif c.isalnum() or c in globchars or ord(c) > 127: |
14513 | 64 # gather up a symbol/keyword |
11275 | 65 s = pos |
66 pos += 1 | |
67 while pos < l: # find end of symbol | |
68 d = program[pos] | |
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69 if not (d.isalnum() or d in globchars or ord(d) > 127): |
11275 | 70 break |
71 pos += 1 | |
72 sym = program[s:pos] | |
73 if sym in keywords: # operator keywords | |
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74 yield (sym, None, s) |
11275 | 75 else: |
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76 yield ('symbol', sym, s) |
11275 | 77 pos -= 1 |
78 else: | |
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79 raise error.ParseError(_("syntax error"), pos) |
11275 | 80 pos += 1 |
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81 yield ('end', None, pos) |
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83 def parse(expr): |
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84 p = parser.parser(elements) |
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85 tree, pos = p.parse(tokenize(expr)) |
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86 if pos != len(expr): |
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87 raise error.ParseError(_("invalid token"), pos) |
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88 return tree |
11275 | 89 |
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90 def getstring(x, err): |
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91 if x and (x[0] == 'string' or x[0] == 'symbol'): |
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92 return x[1] |
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93 raise error.ParseError(err) |
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94 |
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95 def getset(mctx, x): |
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96 if not x: |
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97 raise error.ParseError(_("missing argument")) |
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98 return methods[x[0]](mctx, *x[1:]) |
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99 |
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100 def stringset(mctx, x): |
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101 m = mctx.matcher([x]) |
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102 return [f for f in mctx.subset if m(f)] |
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103 |
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104 def andset(mctx, x, y): |
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105 return getset(mctx.narrow(getset(mctx, x)), y) |
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106 |
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107 def orset(mctx, x, y): |
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108 # needs optimizing |
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109 xl = getset(mctx, x) |
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110 yl = getset(mctx, y) |
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111 return xl + [f for f in yl if f not in xl] |
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112 |
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113 def notset(mctx, x): |
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114 s = set(getset(mctx, x)) |
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115 return [r for r in mctx.subset if r not in s] |
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116 |
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117 def minusset(mctx, x, y): |
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118 xl = getset(mctx, x) |
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119 yl = set(getset(mctx, y)) |
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120 return [f for f in xl if f not in yl] |
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121 |
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122 def listset(mctx, a, b): |
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123 raise error.ParseError(_("can't use a list in this context")) |
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124 |
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125 def modified(mctx, x): |
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126 """``modified()`` |
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127 File that is modified according to status. |
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128 """ |
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129 # i18n: "modified" is a keyword |
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130 getargs(x, 0, 0, _("modified takes no arguments")) |
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131 s = mctx.status().modified |
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132 return [f for f in mctx.subset if f in s] |
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133 |
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134 def added(mctx, x): |
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135 """``added()`` |
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136 File that is added according to status. |
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137 """ |
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138 # i18n: "added" is a keyword |
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139 getargs(x, 0, 0, _("added takes no arguments")) |
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140 s = mctx.status().added |
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141 return [f for f in mctx.subset if f in s] |
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142 |
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143 def removed(mctx, x): |
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144 """``removed()`` |
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145 File that is removed according to status. |
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146 """ |
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147 # i18n: "removed" is a keyword |
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148 getargs(x, 0, 0, _("removed takes no arguments")) |
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149 s = mctx.status().removed |
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150 return [f for f in mctx.subset if f in s] |
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151 |
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152 def deleted(mctx, x): |
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153 """``deleted()`` |
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154 File that is deleted according to status. |
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155 """ |
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156 # i18n: "deleted" is a keyword |
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157 getargs(x, 0, 0, _("deleted takes no arguments")) |
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158 s = mctx.status().deleted |
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159 return [f for f in mctx.subset if f in s] |
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160 |
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161 def unknown(mctx, x): |
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162 """``unknown()`` |
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163 File that is unknown according to status. These files will only be |
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164 considered if this predicate is used. |
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165 """ |
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166 # i18n: "unknown" is a keyword |
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167 getargs(x, 0, 0, _("unknown takes no arguments")) |
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168 s = mctx.status().unknown |
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169 return [f for f in mctx.subset if f in s] |
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170 |
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171 def ignored(mctx, x): |
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172 """``ignored()`` |
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173 File that is ignored according to status. These files will only be |
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174 considered if this predicate is used. |
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175 """ |
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176 # i18n: "ignored" is a keyword |
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177 getargs(x, 0, 0, _("ignored takes no arguments")) |
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178 s = mctx.status().ignored |
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179 return [f for f in mctx.subset if f in s] |
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180 |
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181 def clean(mctx, x): |
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182 """``clean()`` |
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183 File that is clean according to status. |
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184 """ |
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185 # i18n: "clean" is a keyword |
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186 getargs(x, 0, 0, _("clean takes no arguments")) |
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187 s = mctx.status().clean |
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188 return [f for f in mctx.subset if f in s] |
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189 |
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190 def func(mctx, a, b): |
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191 if a[0] == 'symbol' and a[1] in symbols: |
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192 return symbols[a[1]](mctx, b) |
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193 |
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194 keep = lambda fn: getattr(fn, '__doc__', None) is not None |
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195 |
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196 syms = [s for (s, fn) in symbols.items() if keep(fn)] |
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197 raise error.UnknownIdentifier(a[1], syms) |
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198 |
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199 def getlist(x): |
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200 if not x: |
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201 return [] |
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202 if x[0] == 'list': |
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203 return getlist(x[1]) + [x[2]] |
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204 return [x] |
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205 |
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206 def getargs(x, min, max, err): |
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207 l = getlist(x) |
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208 if len(l) < min or len(l) > max: |
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209 raise error.ParseError(err) |
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210 return l |
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211 |
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212 def binary(mctx, x): |
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213 """``binary()`` |
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214 File that appears to be binary (contains NUL bytes). |
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215 """ |
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216 # i18n: "binary" is a keyword |
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217 getargs(x, 0, 0, _("binary takes no arguments")) |
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218 return [f for f in mctx.existing() if util.binary(mctx.ctx[f].data())] |
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219 |
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220 def exec_(mctx, x): |
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221 """``exec()`` |
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222 File that is marked as executable. |
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223 """ |
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224 # i18n: "exec" is a keyword |
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225 getargs(x, 0, 0, _("exec takes no arguments")) |
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226 return [f for f in mctx.existing() if mctx.ctx.flags(f) == 'x'] |
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227 |
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228 def symlink(mctx, x): |
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229 """``symlink()`` |
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230 File that is marked as a symlink. |
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231 """ |
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232 # i18n: "symlink" is a keyword |
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233 getargs(x, 0, 0, _("symlink takes no arguments")) |
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234 return [f for f in mctx.existing() if mctx.ctx.flags(f) == 'l'] |
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235 |
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236 def resolved(mctx, x): |
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237 """``resolved()`` |
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238 File that is marked resolved according to the resolve state. |
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239 """ |
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240 # i18n: "resolved" is a keyword |
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241 getargs(x, 0, 0, _("resolved takes no arguments")) |
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242 if mctx.ctx.rev() is not None: |
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243 return [] |
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244 ms = merge.mergestate(mctx.ctx.repo()) |
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245 return [f for f in mctx.subset if f in ms and ms[f] == 'r'] |
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246 |
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247 def unresolved(mctx, x): |
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248 """``unresolved()`` |
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249 File that is marked unresolved according to the resolve state. |
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250 """ |
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251 # i18n: "unresolved" is a keyword |
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252 getargs(x, 0, 0, _("unresolved takes no arguments")) |
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253 if mctx.ctx.rev() is not None: |
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254 return [] |
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255 ms = merge.mergestate(mctx.ctx.repo()) |
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256 return [f for f in mctx.subset if f in ms and ms[f] == 'u'] |
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257 |
14680 | 258 def hgignore(mctx, x): |
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259 """``hgignore()`` |
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260 File that matches the active .hgignore pattern. |
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261 """ |
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262 # i18n: "hgignore" is a keyword |
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264 ignore = mctx.ctx.repo().dirstate._ignore |
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266 | |
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267 def portable(mctx, x): |
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268 """``portable()`` |
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269 File that has a portable name. (This doesn't include filenames with case |
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270 collisions.) |
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271 """ |
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272 # i18n: "portable" is a keyword |
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273 getargs(x, 0, 0, _("portable takes no arguments")) |
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274 checkwinfilename = util.checkwinfilename |
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275 return [f for f in mctx.subset if checkwinfilename(f) is None] |
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276 |
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277 def grep(mctx, x): |
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278 """``grep(regex)`` |
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279 File contains the given regular expression. |
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280 """ |
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281 try: |
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282 # i18n: "grep" is a keyword |
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283 r = re.compile(getstring(x, _("grep requires a pattern"))) |
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284 except re.error as e: |
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285 raise error.ParseError(_('invalid match pattern: %s') % e) |
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286 return [f for f in mctx.existing() if r.search(mctx.ctx[f].data())] |
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287 |
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288 def _sizetomax(s): |
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289 try: |
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290 s = s.strip() |
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291 for k, v in util._sizeunits: |
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292 if s.endswith(k): |
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293 # max(4k) = 5k - 1, max(4.5k) = 4.6k - 1 |
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294 n = s[:-len(k)] |
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295 inc = 1.0 |
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296 if "." in n: |
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297 inc /= 10 ** len(n.split(".")[1]) |
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298 return int((float(n) + inc) * v) - 1 |
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299 # no extension, this is a precise value |
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300 return int(s) |
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301 except ValueError: |
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302 raise error.ParseError(_("couldn't parse size: %s") % s) |
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303 |
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304 def size(mctx, x): |
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305 """``size(expression)`` |
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306 File size matches the given expression. Examples: |
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307 |
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308 - 1k (files from 1024 to 2047 bytes) |
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309 - < 20k (files less than 20480 bytes) |
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310 - >= .5MB (files at least 524288 bytes) |
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311 - 4k - 1MB (files from 4096 bytes to 1048576 bytes) |
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312 """ |
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313 |
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314 # i18n: "size" is a keyword |
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315 expr = getstring(x, _("size requires an expression")).strip() |
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316 if '-' in expr: # do we have a range? |
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317 a, b = expr.split('-', 1) |
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318 a = util.sizetoint(a) |
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319 b = util.sizetoint(b) |
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320 m = lambda x: x >= a and x <= b |
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321 elif expr.startswith("<="): |
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322 a = util.sizetoint(expr[2:]) |
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323 m = lambda x: x <= a |
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324 elif expr.startswith("<"): |
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325 a = util.sizetoint(expr[1:]) |
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326 m = lambda x: x < a |
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327 elif expr.startswith(">="): |
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328 a = util.sizetoint(expr[2:]) |
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329 m = lambda x: x >= a |
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330 elif expr.startswith(">"): |
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331 a = util.sizetoint(expr[1:]) |
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332 m = lambda x: x > a |
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333 elif expr[0].isdigit or expr[0] == '.': |
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334 a = util.sizetoint(expr) |
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335 b = _sizetomax(expr) |
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336 m = lambda x: x >= a and x <= b |
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337 else: |
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338 raise error.ParseError(_("couldn't parse size: %s") % expr) |
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339 |
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340 return [f for f in mctx.existing() if m(mctx.ctx[f].size())] |
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341 |
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342 def encoding(mctx, x): |
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343 """``encoding(name)`` |
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344 File can be successfully decoded with the given character |
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345 encoding. May not be useful for encodings other than ASCII and |
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346 UTF-8. |
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347 """ |
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348 |
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349 # i18n: "encoding" is a keyword |
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350 enc = getstring(x, _("encoding requires an encoding name")) |
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351 |
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352 s = [] |
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353 for f in mctx.existing(): |
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354 d = mctx.ctx[f].data() |
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355 try: |
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356 d.decode(enc) |
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357 except LookupError: |
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358 raise util.Abort(_("unknown encoding '%s'") % enc) |
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359 except UnicodeDecodeError: |
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360 continue |
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361 s.append(f) |
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362 |
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363 return s |
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364 |
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365 def eol(mctx, x): |
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366 """``eol(style)`` |
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367 File contains newlines of the given style (dos, unix, mac). Binary |
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368 files are excluded, files with mixed line endings match multiple |
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369 styles. |
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370 """ |
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371 |
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372 # i18n: "encoding" is a keyword |
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373 enc = getstring(x, _("encoding requires an encoding name")) |
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374 |
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375 s = [] |
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376 for f in mctx.existing(): |
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377 d = mctx.ctx[f].data() |
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378 if util.binary(d): |
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379 continue |
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380 if (enc == 'dos' or enc == 'win') and '\r\n' in d: |
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381 s.append(f) |
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382 elif enc == 'unix' and re.search('(?<!\r)\n', d): |
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383 s.append(f) |
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384 elif enc == 'mac' and re.search('\r(?!\n)', d): |
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385 s.append(f) |
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386 return s |
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387 |
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388 def copied(mctx, x): |
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389 """``copied()`` |
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390 File that is recorded as being copied. |
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391 """ |
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392 # i18n: "copied" is a keyword |
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393 getargs(x, 0, 0, _("copied takes no arguments")) |
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394 s = [] |
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395 for f in mctx.subset: |
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396 p = mctx.ctx[f].parents() |
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397 if p and p[0].path() != f: |
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398 s.append(f) |
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399 return s |
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400 |
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401 def subrepo(mctx, x): |
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402 """``subrepo([pattern])`` |
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403 Subrepositories whose paths match the given pattern. |
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404 """ |
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405 # i18n: "subrepo" is a keyword |
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406 getargs(x, 0, 1, _("subrepo takes at most one argument")) |
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407 ctx = mctx.ctx |
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408 sstate = sorted(ctx.substate) |
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409 if x: |
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410 # i18n: "subrepo" is a keyword |
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411 pat = getstring(x, _("subrepo requires a pattern or no arguments")) |
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412 |
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413 import match as matchmod # avoid circular import issues |
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414 fast = not matchmod.patkind(pat) |
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415 if fast: |
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416 def m(s): |
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417 return (s == pat) |
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418 else: |
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419 m = matchmod.match(ctx.repo().root, '', [pat], ctx=ctx) |
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420 return [sub for sub in sstate if m(sub)] |
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421 else: |
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422 return [sub for sub in sstate] |
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423 |
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424 symbols = { |
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425 'added': added, |
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426 'binary': binary, |
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427 'clean': clean, |
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428 'copied': copied, |
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429 'deleted': deleted, |
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430 'encoding': encoding, |
18842
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431 'eol': eol, |
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432 'exec': exec_, |
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433 'grep': grep, |
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434 'ignored': ignored, |
14680 | 435 'hgignore': hgignore, |
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436 'modified': modified, |
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437 'portable': portable, |
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438 'removed': removed, |
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439 'resolved': resolved, |
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440 'size': size, |
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441 'symlink': symlink, |
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442 'unknown': unknown, |
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443 'unresolved': unresolved, |
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444 'subrepo': subrepo, |
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445 } |
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446 |
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447 methods = { |
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448 'string': stringset, |
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449 'symbol': stringset, |
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450 'and': andset, |
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451 'or': orset, |
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452 'minus': minusset, |
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453 'list': listset, |
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454 'group': getset, |
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455 'not': notset, |
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456 'func': func, |
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457 } |
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458 |
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459 class matchctx(object): |
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460 def __init__(self, ctx, subset=None, status=None): |
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461 self.ctx = ctx |
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462 self.subset = subset |
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463 self._status = status |
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464 def status(self): |
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465 return self._status |
14673 | 466 def matcher(self, patterns): |
467 return self.ctx.match(patterns) | |
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468 def filter(self, files): |
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469 return [f for f in files if f in self.subset] |
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470 def existing(self): |
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471 if self._status is not None: |
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472 removed = set(self._status[3]) |
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473 unknown = set(self._status[4] + self._status[5]) |
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474 else: |
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475 removed = set() |
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476 unknown = set() |
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477 return (f for f in self.subset |
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478 if (f in self.ctx and f not in removed) or f in unknown) |
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479 def narrow(self, files): |
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480 return matchctx(self.ctx, self.filter(files), self._status) |
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481 |
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482 def _intree(funcs, tree): |
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483 if isinstance(tree, tuple): |
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484 if tree[0] == 'func' and tree[1][0] == 'symbol': |
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485 if tree[1][1] in funcs: |
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486 return True |
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487 for s in tree[1:]: |
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488 if _intree(funcs, s): |
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489 return True |
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490 return False |
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491 |
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492 # filesets using matchctx.existing() |
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493 _existingcallers = [ |
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494 'binary', |
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495 'exec', |
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496 'grep', |
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497 'size', |
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498 'symlink', |
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|
499 ] |
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|
500 |
14673 | 501 def getfileset(ctx, expr): |
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|
502 tree = parse(expr) |
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503 |
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504 # do we need status info? |
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505 if (_intree(['modified', 'added', 'removed', 'deleted', |
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506 'unknown', 'ignored', 'clean'], tree) or |
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507 # Using matchctx.existing() on a workingctx requires us to check |
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508 # for deleted files. |
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509 (ctx.rev() is None and _intree(_existingcallers, tree))): |
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510 unknown = _intree(['unknown'], tree) |
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511 ignored = _intree(['ignored'], tree) |
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512 |
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513 r = ctx.repo() |
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514 status = r.status(ctx.p1(), ctx, |
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515 unknown=unknown, ignored=ignored, clean=True) |
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516 subset = [] |
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517 for c in status: |
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518 subset.extend(c) |
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519 else: |
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|
520 status = None |
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521 subset = list(ctx.walk(ctx.match([]))) |
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522 |
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523 return getset(matchctx(ctx, subset, status), tree) |
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Matt Mackall <mpm@selenic.com>
parents:
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524 |
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fileset: pretty print syntax tree in debug output
Yuya Nishihara <yuya@tcha.org>
parents:
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525 def prettyformat(tree): |
ad1d2c952889
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Yuya Nishihara <yuya@tcha.org>
parents:
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526 return parser.prettyformat(tree, ('string', 'symbol')) |
ad1d2c952889
fileset: pretty print syntax tree in debug output
Yuya Nishihara <yuya@tcha.org>
parents:
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527 |
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0744db5eb51c
fileset: add some function help text
Matt Mackall <mpm@selenic.com>
parents:
14680
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528 # tell hggettext to extract docstrings from these functions: |
0744db5eb51c
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Matt Mackall <mpm@selenic.com>
parents:
14680
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529 i18nfunctions = symbols.values() |