1 | #
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2 | # = pathname.rb
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3 | #
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4 | # Object-Oriented Pathname Class
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5 | #
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6 | # Author:: Tanaka Akira <[email protected]>
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7 | # Documentation:: Author and Gavin Sinclair
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8 | #
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9 | # For documentation, see class Pathname.
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10 | #
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11 | # <tt>pathname.rb</tt> is distributed with Ruby since 1.8.0.
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12 | #
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13 |
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14 | #
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15 | # == Pathname
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16 | #
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17 | # Pathname represents a pathname which locates a file in a filesystem.
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18 | # The pathname depends on OS: Unix, Windows, etc.
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19 | # Pathname library works with pathnames of local OS.
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20 | # However non-Unix pathnames are supported experimentally.
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21 | #
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22 | # It does not represent the file itself.
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23 | # A Pathname can be relative or absolute. It's not until you try to
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24 | # reference the file that it even matters whether the file exists or not.
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25 | #
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26 | # Pathname is immutable. It has no method for destructive update.
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27 | #
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28 | # The value of this class is to manipulate file path information in a neater
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29 | # way than standard Ruby provides. The examples below demonstrate the
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30 | # difference. *All* functionality from File, FileTest, and some from Dir and
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31 | # FileUtils is included, in an unsurprising way. It is essentially a facade for
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32 | # all of these, and more.
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33 | #
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34 | # == Examples
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35 | #
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36 | # === Example 1: Using Pathname
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37 | #
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38 | # require 'pathname'
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39 | # p = Pathname.new("/usr/bin/ruby")
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40 | # size = p.size # 27662
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41 | # isdir = p.directory? # false
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42 | # dir = p.dirname # Pathname:/usr/bin
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43 | # base = p.basename # Pathname:ruby
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44 | # dir, base = p.split # [Pathname:/usr/bin, Pathname:ruby]
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45 | # data = p.read
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46 | # p.open { |f| _ }
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47 | # p.each_line { |line| _ }
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48 | #
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49 | # === Example 2: Using standard Ruby
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50 | #
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51 | # p = "/usr/bin/ruby"
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52 | # size = File.size(p) # 27662
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53 | # isdir = File.directory?(p) # false
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54 | # dir = File.dirname(p) # "/usr/bin"
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55 | # base = File.basename(p) # "ruby"
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56 | # dir, base = File.split(p) # ["/usr/bin", "ruby"]
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57 | # data = File.read(p)
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58 | # File.open(p) { |f| _ }
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59 | # File.foreach(p) { |line| _ }
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60 | #
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61 | # === Example 3: Special features
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62 | #
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63 | # p1 = Pathname.new("/usr/lib") # Pathname:/usr/lib
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64 | # p2 = p1 + "ruby/1.8" # Pathname:/usr/lib/ruby/1.8
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65 | # p3 = p1.parent # Pathname:/usr
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66 | # p4 = p2.relative_path_from(p3) # Pathname:lib/ruby/1.8
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67 | # pwd = Pathname.pwd # Pathname:/home/gavin
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68 | # pwd.absolute? # true
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69 | # p5 = Pathname.new "." # Pathname:.
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70 | # p5 = p5 + "music/../articles" # Pathname:music/../articles
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71 | # p5.cleanpath # Pathname:articles
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72 | # p5.realpath # Pathname:/home/gavin/articles
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73 | # p5.children # [Pathname:/home/gavin/articles/linux, ...]
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74 | #
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75 | # == Breakdown of functionality
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76 | #
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77 | # === Core methods
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78 | #
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79 | # These methods are effectively manipulating a String, because that's all a path
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80 | # is. Except for #mountpoint?, #children, and #realpath, they don't access the
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81 | # filesystem.
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82 | #
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83 | # - +
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84 | # - #join
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85 | # - #parent
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86 | # - #root?
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87 | # - #absolute?
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88 | # - #relative?
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89 | # - #relative_path_from
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90 | # - #each_filename
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91 | # - #cleanpath
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92 | # - #realpath
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93 | # - #children
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94 | # - #mountpoint?
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95 | #
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96 | # === File status predicate methods
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97 | #
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98 | # These methods are a facade for FileTest:
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99 | # - #blockdev?
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100 | # - #chardev?
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101 | # - #directory?
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102 | # - #executable?
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103 | # - #executable_real?
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104 | # - #exist?
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105 | # - #file?
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106 | # - #grpowned?
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107 | # - #owned?
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108 | # - #pipe?
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109 | # - #readable?
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110 | # - #world_readable?
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111 | # - #readable_real?
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112 | # - #setgid?
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113 | # - #setuid?
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114 | # - #size
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115 | # - #size?
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116 | # - #socket?
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117 | # - #sticky?
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118 | # - #symlink?
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119 | # - #writable?
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120 | # - #world_writable?
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121 | # - #writable_real?
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122 | # - #zero?
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123 | #
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124 | # === File property and manipulation methods
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125 | #
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126 | # These methods are a facade for File:
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127 | # - #atime
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128 | # - #ctime
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129 | # - #mtime
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130 | # - #chmod(mode)
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131 | # - #lchmod(mode)
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132 | # - #chown(owner, group)
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133 | # - #lchown(owner, group)
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134 | # - #fnmatch(pattern, *args)
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135 | # - #fnmatch?(pattern, *args)
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136 | # - #ftype
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137 | # - #make_link(old)
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138 | # - #open(*args, &block)
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139 | # - #readlink
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140 | # - #rename(to)
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141 | # - #stat
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142 | # - #lstat
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143 | # - #make_symlink(old)
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144 | # - #truncate(length)
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145 | # - #utime(atime, mtime)
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146 | # - #basename(*args)
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147 | # - #dirname
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148 | # - #extname
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149 | # - #expand_path(*args)
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150 | # - #split
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151 | #
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152 | # === Directory methods
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153 | #
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154 | # These methods are a facade for Dir:
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155 | # - Pathname.glob(*args)
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156 | # - Pathname.getwd / Pathname.pwd
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157 | # - #rmdir
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158 | # - #entries
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159 | # - #each_entry(&block)
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160 | # - #mkdir(*args)
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161 | # - #opendir(*args)
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162 | #
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163 | # === IO
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164 | #
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165 | # These methods are a facade for IO:
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166 | # - #each_line(*args, &block)
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167 | # - #read(*args)
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168 | # - #readlines(*args)
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169 | # - #sysopen(*args)
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170 | #
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171 | # === Utilities
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172 | #
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173 | # These methods are a mixture of Find, FileUtils, and others:
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174 | # - #find(&block)
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175 | # - #mkpath
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176 | # - #rmtree
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177 | # - #unlink / #delete
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178 | #
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179 | #
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180 | # == Method documentation
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181 | #
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182 | # As the above section shows, most of the methods in Pathname are facades. The
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183 | # documentation for these methods generally just says, for instance, "See
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184 | # FileTest.writable?", as you should be familiar with the original method
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185 | # anyway, and its documentation (e.g. through +ri+) will contain more
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186 | # information. In some cases, a brief description will follow.
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187 | #
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188 | class Pathname
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189 |
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190 | # :stopdoc:
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191 | if RUBY_VERSION < "1.9"
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192 | TO_PATH = :to_str
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193 | else
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194 | # to_path is implemented so Pathname objects are usable with File.open, etc.
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195 | TO_PATH = :to_path
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196 | end
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197 | # :startdoc:
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198 |
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199 | #
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200 | # Create a Pathname object from the given String (or String-like object).
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201 | # If +path+ contains a NUL character (<tt>\0</tt>), an ArgumentError is raised.
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202 | #
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203 | def initialize(path)
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204 | path = path.__send__(TO_PATH) if path.respond_to? TO_PATH
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205 | @path = path.dup
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206 |
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207 | if /\0/ =~ @path
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208 | raise ArgumentError, "pathname contains \\0: #{@path.inspect}"
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209 | end
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210 |
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211 | self.taint if @path.tainted?
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212 | end
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213 |
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214 | def freeze() super; @path.freeze; self end
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215 | def taint() super; @path.taint; self end
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216 | def untaint() super; @path.untaint; self end
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217 |
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218 | #
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219 | # Compare this pathname with +other+. The comparison is string-based.
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220 | # Be aware that two different paths (<tt>foo.txt</tt> and <tt>./foo.txt</tt>)
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221 | # can refer to the same file.
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222 | #
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223 | def ==(other)
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224 | return false unless Pathname === other
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225 | other.to_s == @path
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226 | end
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227 | alias === ==
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228 | alias eql? ==
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229 |
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230 | # Provides for comparing pathnames, case-sensitively.
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231 | def <=>(other)
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232 | return nil unless Pathname === other
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233 | @path.tr('/', "\0") <=> other.to_s.tr('/', "\0")
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234 | end
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235 |
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236 | def hash # :nodoc:
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237 | @path.hash
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238 | end
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239 |
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240 | # Return the path as a String.
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241 | def to_s
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242 | @path.dup
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243 | end
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244 |
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245 | # to_path is implemented so Pathname objects are usable with File.open, etc.
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246 | alias_method TO_PATH, :to_s
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247 |
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248 | def inspect # :nodoc:
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249 | "#<#{self.class}:#{@path}>"
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250 | end
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251 |
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252 | # Return a pathname which is substituted by String#sub.
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253 | def sub(pattern, *rest, &block)
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254 | self.class.new(@path.sub(pattern, *rest, &block))
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255 | end
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256 |
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257 | if File::ALT_SEPARATOR
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258 | SEPARATOR_PAT = /[#{Regexp.quote File::ALT_SEPARATOR}#{Regexp.quote File::SEPARATOR}]/
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259 | else
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260 | SEPARATOR_PAT = /#{Regexp.quote File::SEPARATOR}/
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261 | end
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262 |
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263 | # chop_basename(path) -> [pre-basename, basename] or nil
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264 | def chop_basename(path)
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265 | base = File.basename(path)
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266 | if /\A#{SEPARATOR_PAT}?\z/ =~ base
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267 | return nil
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268 | else
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269 | return path[0, path.rindex(base)], base
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270 | end
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271 | end
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272 | private :chop_basename
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273 |
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274 | # split_names(path) -> prefix, [name, ...]
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275 | def split_names(path)
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276 | names = []
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277 | while r = chop_basename(path)
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278 | path, basename = r
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279 | names.unshift basename
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280 | end
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281 | return path, names
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282 | end
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283 | private :split_names
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284 |
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285 | def prepend_prefix(prefix, relpath)
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286 | if relpath.empty?
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287 | File.dirname(prefix)
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288 | elsif /#{SEPARATOR_PAT}/ =~ prefix
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289 | prefix = File.dirname(prefix)
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290 | prefix = File.join(prefix, "") if File.basename(prefix + 'a') != 'a'
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291 | prefix + relpath
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292 | else
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293 | prefix + relpath
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294 | end
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295 | end
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296 | private :prepend_prefix
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297 |
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298 | # Returns clean pathname of +self+ with consecutive slashes and useless dots
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299 | # removed. The filesystem is not accessed.
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300 | #
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301 | # If +consider_symlink+ is +true+, then a more conservative algorithm is used
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302 | # to avoid breaking symbolic linkages. This may retain more <tt>..</tt>
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303 | # entries than absolutely necessary, but without accessing the filesystem,
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304 | # this can't be avoided. See #realpath.
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305 | #
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306 | def cleanpath(consider_symlink=false)
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307 | if consider_symlink
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308 | cleanpath_conservative
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309 | else
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310 | cleanpath_aggressive
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311 | end
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312 | end
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313 |
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314 | #
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315 | # Clean the path simply by resolving and removing excess "." and ".." entries.
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316 | # Nothing more, nothing less.
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317 | #
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318 | def cleanpath_aggressive
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319 | path = @path
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320 | names = []
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321 | pre = path
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322 | while r = chop_basename(pre)
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323 | pre, base = r
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324 | case base
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325 | when '.'
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326 | when '..'
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327 | names.unshift base
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328 | else
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329 | if names[0] == '..'
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330 | names.shift
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331 | else
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332 | names.unshift base
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333 | end
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334 | end
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335 | end
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336 | if /#{SEPARATOR_PAT}/o =~ File.basename(pre)
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337 | names.shift while names[0] == '..'
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338 | end
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339 | self.class.new(prepend_prefix(pre, File.join(*names)))
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340 | end
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341 | private :cleanpath_aggressive
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342 |
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343 | # has_trailing_separator?(path) -> bool
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344 | def has_trailing_separator?(path)
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345 | if r = chop_basename(path)
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346 | pre, basename = r
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347 | pre.length + basename.length < path.length
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348 | else
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349 | false
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350 | end
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351 | end
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352 | private :has_trailing_separator?
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353 |
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354 | # add_trailing_separator(path) -> path
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355 | def add_trailing_separator(path)
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356 | if File.basename(path + 'a') == 'a'
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357 | path
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358 | else
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359 | File.join(path, "") # xxx: Is File.join is appropriate to add separator?
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360 | end
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361 | end
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362 | private :add_trailing_separator
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363 |
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364 | def del_trailing_separator(path)
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365 | if r = chop_basename(path)
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366 | pre, basename = r
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367 | pre + basename
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368 | elsif /#{SEPARATOR_PAT}+\z/o =~ path
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369 | $` + File.dirname(path)[/#{SEPARATOR_PAT}*\z/o]
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370 | else
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371 | path
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372 | end
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373 | end
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374 | private :del_trailing_separator
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375 |
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376 | def cleanpath_conservative
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377 | path = @path
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378 | names = []
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379 | pre = path
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380 | while r = chop_basename(pre)
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381 | pre, base = r
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382 | names.unshift base if base != '.'
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383 | end
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384 | if /#{SEPARATOR_PAT}/o =~ File.basename(pre)
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385 | names.shift while names[0] == '..'
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386 | end
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387 | if names.empty?
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388 | self.class.new(File.dirname(pre))
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389 | else
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390 | if names.last != '..' && File.basename(path) == '.'
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391 | names << '.'
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392 | end
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393 | result = prepend_prefix(pre, File.join(*names))
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394 | if /\A(?:\.|\.\.)\z/ !~ names.last && has_trailing_separator?(path)
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395 | self.class.new(add_trailing_separator(result))
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396 | else
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397 | self.class.new(result)
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398 | end
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399 | end
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400 | end
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401 | private :cleanpath_conservative
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402 |
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403 | def realpath_rec(prefix, unresolved, h)
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404 | resolved = []
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405 | until unresolved.empty?
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406 | n = unresolved.shift
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407 | if n == '.'
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408 | next
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409 | elsif n == '..'
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410 | resolved.pop
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411 | else
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412 | path = prepend_prefix(prefix, File.join(*(resolved + [n])))
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413 | if h.include? path
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414 | if h[path] == :resolving
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415 | raise Errno::ELOOP.new(path)
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416 | else
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417 | prefix, *resolved = h[path]
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418 | end
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419 | else
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420 | s = File.lstat(path)
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421 | if s.symlink?
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422 | h[path] = :resolving
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423 | link_prefix, link_names = split_names(File.readlink(path))
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424 | if link_prefix == ''
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425 | prefix, *resolved = h[path] = realpath_rec(prefix, resolved + link_names, h)
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426 | else
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427 | prefix, *resolved = h[path] = realpath_rec(link_prefix, link_names, h)
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428 | end
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429 | else
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430 | resolved << n
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431 | h[path] = [prefix, *resolved]
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432 | end
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433 | end
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434 | end
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435 | end
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436 | return prefix, *resolved
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437 | end
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438 | private :realpath_rec
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439 |
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440 | #
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441 | # Returns a real (absolute) pathname of +self+ in the actual filesystem.
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442 | # The real pathname doesn't contain symlinks or useless dots.
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443 | #
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444 | # No arguments should be given; the old behaviour is *obsoleted*.
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445 | #
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446 | def realpath
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447 | path = @path
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448 | prefix, names = split_names(path)
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449 | if prefix == ''
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450 | prefix, names2 = split_names(Dir.pwd)
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451 | names = names2 + names
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452 | end
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453 | prefix, *names = realpath_rec(prefix, names, {})
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454 | self.class.new(prepend_prefix(prefix, File.join(*names)))
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455 | end
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456 |
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457 | # #parent returns the parent directory.
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458 | #
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459 | # This is same as <tt>self + '..'</tt>.
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460 | def parent
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461 | self + '..'
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462 | end
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463 |
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464 | # #mountpoint? returns +true+ if <tt>self</tt> points to a mountpoint.
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465 | def mountpoint?
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466 | begin
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467 | stat1 = self.lstat
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468 | stat2 = self.parent.lstat
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469 | stat1.dev == stat2.dev && stat1.ino == stat2.ino ||
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470 | stat1.dev != stat2.dev
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471 | rescue Errno::ENOENT
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472 | false
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473 | end
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474 | end
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475 |
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476 | #
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477 | # #root? is a predicate for root directories. I.e. it returns +true+ if the
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478 | # pathname consists of consecutive slashes.
|
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479 | #
|
---|
480 | # It doesn't access actual filesystem. So it may return +false+ for some
|
---|
481 | # pathnames which points to roots such as <tt>/usr/..</tt>.
|
---|
482 | #
|
---|
483 | def root?
|
---|
484 | !!(chop_basename(@path) == nil && /#{SEPARATOR_PAT}/o =~ @path)
|
---|
485 | end
|
---|
486 |
|
---|
487 | # Predicate method for testing whether a path is absolute.
|
---|
488 | # It returns +true+ if the pathname begins with a slash.
|
---|
489 | def absolute?
|
---|
490 | !relative?
|
---|
491 | end
|
---|
492 |
|
---|
493 | # The opposite of #absolute?
|
---|
494 | def relative?
|
---|
495 | path = @path
|
---|
496 | while r = chop_basename(path)
|
---|
497 | path, basename = r
|
---|
498 | end
|
---|
499 | path == ''
|
---|
500 | end
|
---|
501 |
|
---|
502 | #
|
---|
503 | # Iterates over each component of the path.
|
---|
504 | #
|
---|
505 | # Pathname.new("/usr/bin/ruby").each_filename {|filename| ... }
|
---|
506 | # # yields "usr", "bin", and "ruby".
|
---|
507 | #
|
---|
508 | def each_filename # :yield: filename
|
---|
509 | prefix, names = split_names(@path)
|
---|
510 | names.each {|filename| yield filename }
|
---|
511 | nil
|
---|
512 | end
|
---|
513 |
|
---|
514 | # Iterates over and yields a new Pathname object
|
---|
515 | # for each element in the given path in descending order.
|
---|
516 | #
|
---|
517 | # Pathname.new('/path/to/some/file.rb').descend {|v| p v}
|
---|
518 | # #<Pathname:/>
|
---|
519 | # #<Pathname:/path>
|
---|
520 | # #<Pathname:/path/to>
|
---|
521 | # #<Pathname:/path/to/some>
|
---|
522 | # #<Pathname:/path/to/some/file.rb>
|
---|
523 | #
|
---|
524 | # Pathname.new('path/to/some/file.rb').descend {|v| p v}
|
---|
525 | # #<Pathname:path>
|
---|
526 | # #<Pathname:path/to>
|
---|
527 | # #<Pathname:path/to/some>
|
---|
528 | # #<Pathname:path/to/some/file.rb>
|
---|
529 | #
|
---|
530 | # It doesn't access actual filesystem.
|
---|
531 | #
|
---|
532 | # This method is available since 1.8.5.
|
---|
533 | #
|
---|
534 | def descend
|
---|
535 | vs = []
|
---|
536 | ascend {|v| vs << v }
|
---|
537 | vs.reverse_each {|v| yield v }
|
---|
538 | nil
|
---|
539 | end
|
---|
540 |
|
---|
541 | # Iterates over and yields a new Pathname object
|
---|
542 | # for each element in the given path in ascending order.
|
---|
543 | #
|
---|
544 | # Pathname.new('/path/to/some/file.rb').ascend {|v| p v}
|
---|
545 | # #<Pathname:/path/to/some/file.rb>
|
---|
546 | # #<Pathname:/path/to/some>
|
---|
547 | # #<Pathname:/path/to>
|
---|
548 | # #<Pathname:/path>
|
---|
549 | # #<Pathname:/>
|
---|
550 | #
|
---|
551 | # Pathname.new('path/to/some/file.rb').ascend {|v| p v}
|
---|
552 | # #<Pathname:path/to/some/file.rb>
|
---|
553 | # #<Pathname:path/to/some>
|
---|
554 | # #<Pathname:path/to>
|
---|
555 | # #<Pathname:path>
|
---|
556 | #
|
---|
557 | # It doesn't access actual filesystem.
|
---|
558 | #
|
---|
559 | # This method is available since 1.8.5.
|
---|
560 | #
|
---|
561 | def ascend
|
---|
562 | path = @path
|
---|
563 | yield self
|
---|
564 | while r = chop_basename(path)
|
---|
565 | path, name = r
|
---|
566 | break if path.empty?
|
---|
567 | yield self.class.new(del_trailing_separator(path))
|
---|
568 | end
|
---|
569 | end
|
---|
570 |
|
---|
571 | #
|
---|
572 | # Pathname#+ appends a pathname fragment to this one to produce a new Pathname
|
---|
573 | # object.
|
---|
574 | #
|
---|
575 | # p1 = Pathname.new("/usr") # Pathname:/usr
|
---|
576 | # p2 = p1 + "bin/ruby" # Pathname:/usr/bin/ruby
|
---|
577 | # p3 = p1 + "/etc/passwd" # Pathname:/etc/passwd
|
---|
578 | #
|
---|
579 | # This method doesn't access the file system; it is pure string manipulation.
|
---|
580 | #
|
---|
581 | def +(other)
|
---|
582 | other = Pathname.new(other) unless Pathname === other
|
---|
583 | Pathname.new(plus(@path, other.to_s))
|
---|
584 | end
|
---|
585 |
|
---|
586 | def plus(path1, path2) # -> path
|
---|
587 | prefix2 = path2
|
---|
588 | index_list2 = []
|
---|
589 | basename_list2 = []
|
---|
590 | while r2 = chop_basename(prefix2)
|
---|
591 | prefix2, basename2 = r2
|
---|
592 | index_list2.unshift prefix2.length
|
---|
593 | basename_list2.unshift basename2
|
---|
594 | end
|
---|
595 | return path2 if prefix2 != ''
|
---|
596 | prefix1 = path1
|
---|
597 | while true
|
---|
598 | while !basename_list2.empty? && basename_list2.first == '.'
|
---|
599 | index_list2.shift
|
---|
600 | basename_list2.shift
|
---|
601 | end
|
---|
602 | break unless r1 = chop_basename(prefix1)
|
---|
603 | prefix1, basename1 = r1
|
---|
604 | next if basename1 == '.'
|
---|
605 | if basename1 == '..' || basename_list2.empty? || basename_list2.first != '..'
|
---|
606 | prefix1 = prefix1 + basename1
|
---|
607 | break
|
---|
608 | end
|
---|
609 | index_list2.shift
|
---|
610 | basename_list2.shift
|
---|
611 | end
|
---|
612 | r1 = chop_basename(prefix1)
|
---|
613 | if !r1 && /#{SEPARATOR_PAT}/o =~ File.basename(prefix1)
|
---|
614 | while !basename_list2.empty? && basename_list2.first == '..'
|
---|
615 | index_list2.shift
|
---|
616 | basename_list2.shift
|
---|
617 | end
|
---|
618 | end
|
---|
619 | if !basename_list2.empty?
|
---|
620 | suffix2 = path2[index_list2.first..-1]
|
---|
621 | r1 ? File.join(prefix1, suffix2) : prefix1 + suffix2
|
---|
622 | else
|
---|
623 | r1 ? prefix1 : File.dirname(prefix1)
|
---|
624 | end
|
---|
625 | end
|
---|
626 | private :plus
|
---|
627 |
|
---|
628 | #
|
---|
629 | # Pathname#join joins pathnames.
|
---|
630 | #
|
---|
631 | # <tt>path0.join(path1, ..., pathN)</tt> is the same as
|
---|
632 | # <tt>path0 + path1 + ... + pathN</tt>.
|
---|
633 | #
|
---|
634 | def join(*args)
|
---|
635 | args.unshift self
|
---|
636 | result = args.pop
|
---|
637 | result = Pathname.new(result) unless Pathname === result
|
---|
638 | return result if result.absolute?
|
---|
639 | args.reverse_each {|arg|
|
---|
640 | arg = Pathname.new(arg) unless Pathname === arg
|
---|
641 | result = arg + result
|
---|
642 | return result if result.absolute?
|
---|
643 | }
|
---|
644 | result
|
---|
645 | end
|
---|
646 |
|
---|
647 | #
|
---|
648 | # Returns the children of the directory (files and subdirectories, not
|
---|
649 | # recursive) as an array of Pathname objects. By default, the returned
|
---|
650 | # pathnames will have enough information to access the files. If you set
|
---|
651 | # +with_directory+ to +false+, then the returned pathnames will contain the
|
---|
652 | # filename only.
|
---|
653 | #
|
---|
654 | # For example:
|
---|
655 | # p = Pathname("/usr/lib/ruby/1.8")
|
---|
656 | # p.children
|
---|
657 | # # -> [ Pathname:/usr/lib/ruby/1.8/English.rb,
|
---|
658 | # Pathname:/usr/lib/ruby/1.8/Env.rb,
|
---|
659 | # Pathname:/usr/lib/ruby/1.8/abbrev.rb, ... ]
|
---|
660 | # p.children(false)
|
---|
661 | # # -> [ Pathname:English.rb, Pathname:Env.rb, Pathname:abbrev.rb, ... ]
|
---|
662 | #
|
---|
663 | # Note that the result never contain the entries <tt>.</tt> and <tt>..</tt> in
|
---|
664 | # the directory because they are not children.
|
---|
665 | #
|
---|
666 | # This method has existed since 1.8.1.
|
---|
667 | #
|
---|
668 | def children(with_directory=true)
|
---|
669 | with_directory = false if @path == '.'
|
---|
670 | result = []
|
---|
671 | Dir.foreach(@path) {|e|
|
---|
672 | next if e == '.' || e == '..'
|
---|
673 | if with_directory
|
---|
674 | result << self.class.new(File.join(@path, e))
|
---|
675 | else
|
---|
676 | result << self.class.new(e)
|
---|
677 | end
|
---|
678 | }
|
---|
679 | result
|
---|
680 | end
|
---|
681 |
|
---|
682 | #
|
---|
683 | # #relative_path_from returns a relative path from the argument to the
|
---|
684 | # receiver. If +self+ is absolute, the argument must be absolute too. If
|
---|
685 | # +self+ is relative, the argument must be relative too.
|
---|
686 | #
|
---|
687 | # #relative_path_from doesn't access the filesystem. It assumes no symlinks.
|
---|
688 | #
|
---|
689 | # ArgumentError is raised when it cannot find a relative path.
|
---|
690 | #
|
---|
691 | # This method has existed since 1.8.1.
|
---|
692 | #
|
---|
693 | def relative_path_from(base_directory)
|
---|
694 | dest_directory = self.cleanpath.to_s
|
---|
695 | base_directory = base_directory.cleanpath.to_s
|
---|
696 | dest_prefix = dest_directory
|
---|
697 | dest_names = []
|
---|
698 | while r = chop_basename(dest_prefix)
|
---|
699 | dest_prefix, basename = r
|
---|
700 | dest_names.unshift basename if basename != '.'
|
---|
701 | end
|
---|
702 | base_prefix = base_directory
|
---|
703 | base_names = []
|
---|
704 | while r = chop_basename(base_prefix)
|
---|
705 | base_prefix, basename = r
|
---|
706 | base_names.unshift basename if basename != '.'
|
---|
707 | end
|
---|
708 | if dest_prefix != base_prefix
|
---|
709 | raise ArgumentError, "different prefix: #{dest_prefix.inspect} and #{base_directory.inspect}"
|
---|
710 | end
|
---|
711 | while !dest_names.empty? &&
|
---|
712 | !base_names.empty? &&
|
---|
713 | dest_names.first == base_names.first
|
---|
714 | dest_names.shift
|
---|
715 | base_names.shift
|
---|
716 | end
|
---|
717 | if base_names.include? '..'
|
---|
718 | raise ArgumentError, "base_directory has ..: #{base_directory.inspect}"
|
---|
719 | end
|
---|
720 | base_names.fill('..')
|
---|
721 | relpath_names = base_names + dest_names
|
---|
722 | if relpath_names.empty?
|
---|
723 | Pathname.new('.')
|
---|
724 | else
|
---|
725 | Pathname.new(File.join(*relpath_names))
|
---|
726 | end
|
---|
727 | end
|
---|
728 | end
|
---|
729 |
|
---|
730 | class Pathname # * IO *
|
---|
731 | #
|
---|
732 | # #each_line iterates over the line in the file. It yields a String object
|
---|
733 | # for each line.
|
---|
734 | #
|
---|
735 | # This method has existed since 1.8.1.
|
---|
736 | #
|
---|
737 | def each_line(*args, &block) # :yield: line
|
---|
738 | IO.foreach(@path, *args, &block)
|
---|
739 | end
|
---|
740 |
|
---|
741 | # Pathname#foreachline is *obsoleted* at 1.8.1. Use #each_line.
|
---|
742 | def foreachline(*args, &block)
|
---|
743 | warn "Pathname#foreachline is obsoleted. Use Pathname#each_line."
|
---|
744 | each_line(*args, &block)
|
---|
745 | end
|
---|
746 |
|
---|
747 | # See <tt>IO.read</tt>. Returns all the bytes from the file, or the first +N+
|
---|
748 | # if specified.
|
---|
749 | def read(*args) IO.read(@path, *args) end
|
---|
750 |
|
---|
751 | # See <tt>IO.readlines</tt>. Returns all the lines from the file.
|
---|
752 | def readlines(*args) IO.readlines(@path, *args) end
|
---|
753 |
|
---|
754 | # See <tt>IO.sysopen</tt>.
|
---|
755 | def sysopen(*args) IO.sysopen(@path, *args) end
|
---|
756 | end
|
---|
757 |
|
---|
758 |
|
---|
759 | class Pathname # * File *
|
---|
760 |
|
---|
761 | # See <tt>File.atime</tt>. Returns last access time.
|
---|
762 | def atime() File.atime(@path) end
|
---|
763 |
|
---|
764 | # See <tt>File.ctime</tt>. Returns last (directory entry, not file) change time.
|
---|
765 | def ctime() File.ctime(@path) end
|
---|
766 |
|
---|
767 | # See <tt>File.mtime</tt>. Returns last modification time.
|
---|
768 | def mtime() File.mtime(@path) end
|
---|
769 |
|
---|
770 | # See <tt>File.chmod</tt>. Changes permissions.
|
---|
771 | def chmod(mode) File.chmod(mode, @path) end
|
---|
772 |
|
---|
773 | # See <tt>File.lchmod</tt>.
|
---|
774 | def lchmod(mode) File.lchmod(mode, @path) end
|
---|
775 |
|
---|
776 | # See <tt>File.chown</tt>. Change owner and group of file.
|
---|
777 | def chown(owner, group) File.chown(owner, group, @path) end
|
---|
778 |
|
---|
779 | # See <tt>File.lchown</tt>.
|
---|
780 | def lchown(owner, group) File.lchown(owner, group, @path) end
|
---|
781 |
|
---|
782 | # See <tt>File.fnmatch</tt>. Return +true+ if the receiver matches the given
|
---|
783 | # pattern.
|
---|
784 | def fnmatch(pattern, *args) File.fnmatch(pattern, @path, *args) end
|
---|
785 |
|
---|
786 | # See <tt>File.fnmatch?</tt> (same as #fnmatch).
|
---|
787 | def fnmatch?(pattern, *args) File.fnmatch?(pattern, @path, *args) end
|
---|
788 |
|
---|
789 | # See <tt>File.ftype</tt>. Returns "type" of file ("file", "directory",
|
---|
790 | # etc).
|
---|
791 | def ftype() File.ftype(@path) end
|
---|
792 |
|
---|
793 | # See <tt>File.link</tt>. Creates a hard link.
|
---|
794 | def make_link(old) File.link(old, @path) end
|
---|
795 |
|
---|
796 | # See <tt>File.open</tt>. Opens the file for reading or writing.
|
---|
797 | def open(*args, &block) # :yield: file
|
---|
798 | File.open(@path, *args, &block)
|
---|
799 | end
|
---|
800 |
|
---|
801 | # See <tt>File.readlink</tt>. Read symbolic link.
|
---|
802 | def readlink() self.class.new(File.readlink(@path)) end
|
---|
803 |
|
---|
804 | # See <tt>File.rename</tt>. Rename the file.
|
---|
805 | def rename(to) File.rename(@path, to) end
|
---|
806 |
|
---|
807 | # See <tt>File.stat</tt>. Returns a <tt>File::Stat</tt> object.
|
---|
808 | def stat() File.stat(@path) end
|
---|
809 |
|
---|
810 | # See <tt>File.lstat</tt>.
|
---|
811 | def lstat() File.lstat(@path) end
|
---|
812 |
|
---|
813 | # See <tt>File.symlink</tt>. Creates a symbolic link.
|
---|
814 | def make_symlink(old) File.symlink(old, @path) end
|
---|
815 |
|
---|
816 | # See <tt>File.truncate</tt>. Truncate the file to +length+ bytes.
|
---|
817 | def truncate(length) File.truncate(@path, length) end
|
---|
818 |
|
---|
819 | # See <tt>File.utime</tt>. Update the access and modification times.
|
---|
820 | def utime(atime, mtime) File.utime(atime, mtime, @path) end
|
---|
821 |
|
---|
822 | # See <tt>File.basename</tt>. Returns the last component of the path.
|
---|
823 | def basename(*args) self.class.new(File.basename(@path, *args)) end
|
---|
824 |
|
---|
825 | # See <tt>File.dirname</tt>. Returns all but the last component of the path.
|
---|
826 | def dirname() self.class.new(File.dirname(@path)) end
|
---|
827 |
|
---|
828 | # See <tt>File.extname</tt>. Returns the file's extension.
|
---|
829 | def extname() File.extname(@path) end
|
---|
830 |
|
---|
831 | # See <tt>File.expand_path</tt>.
|
---|
832 | def expand_path(*args) self.class.new(File.expand_path(@path, *args)) end
|
---|
833 |
|
---|
834 | # See <tt>File.split</tt>. Returns the #dirname and the #basename in an
|
---|
835 | # Array.
|
---|
836 | def split() File.split(@path).map {|f| self.class.new(f) } end
|
---|
837 |
|
---|
838 | # Pathname#link is confusing and *obsoleted* because the receiver/argument
|
---|
839 | # order is inverted to corresponding system call.
|
---|
840 | def link(old)
|
---|
841 | warn 'Pathname#link is obsoleted. Use Pathname#make_link.'
|
---|
842 | File.link(old, @path)
|
---|
843 | end
|
---|
844 |
|
---|
845 | # Pathname#symlink is confusing and *obsoleted* because the receiver/argument
|
---|
846 | # order is inverted to corresponding system call.
|
---|
847 | def symlink(old)
|
---|
848 | warn 'Pathname#symlink is obsoleted. Use Pathname#make_symlink.'
|
---|
849 | File.symlink(old, @path)
|
---|
850 | end
|
---|
851 | end
|
---|
852 |
|
---|
853 |
|
---|
854 | class Pathname # * FileTest *
|
---|
855 |
|
---|
856 | # See <tt>FileTest.blockdev?</tt>.
|
---|
857 | def blockdev?() FileTest.blockdev?(@path) end
|
---|
858 |
|
---|
859 | # See <tt>FileTest.chardev?</tt>.
|
---|
860 | def chardev?() FileTest.chardev?(@path) end
|
---|
861 |
|
---|
862 | # See <tt>FileTest.executable?</tt>.
|
---|
863 | def executable?() FileTest.executable?(@path) end
|
---|
864 |
|
---|
865 | # See <tt>FileTest.executable_real?</tt>.
|
---|
866 | def executable_real?() FileTest.executable_real?(@path) end
|
---|
867 |
|
---|
868 | # See <tt>FileTest.exist?</tt>.
|
---|
869 | def exist?() FileTest.exist?(@path) end
|
---|
870 |
|
---|
871 | # See <tt>FileTest.grpowned?</tt>.
|
---|
872 | def grpowned?() FileTest.grpowned?(@path) end
|
---|
873 |
|
---|
874 | # See <tt>FileTest.directory?</tt>.
|
---|
875 | def directory?() FileTest.directory?(@path) end
|
---|
876 |
|
---|
877 | # See <tt>FileTest.file?</tt>.
|
---|
878 | def file?() FileTest.file?(@path) end
|
---|
879 |
|
---|
880 | # See <tt>FileTest.pipe?</tt>.
|
---|
881 | def pipe?() FileTest.pipe?(@path) end
|
---|
882 |
|
---|
883 | # See <tt>FileTest.socket?</tt>.
|
---|
884 | def socket?() FileTest.socket?(@path) end
|
---|
885 |
|
---|
886 | # See <tt>FileTest.owned?</tt>.
|
---|
887 | def owned?() FileTest.owned?(@path) end
|
---|
888 |
|
---|
889 | # See <tt>FileTest.readable?</tt>.
|
---|
890 | def readable?() FileTest.readable?(@path) end
|
---|
891 |
|
---|
892 | # See <tt>FileTest.world_readable?</tt>.
|
---|
893 | def world_readable?() FileTest.world_readable?(@path) end
|
---|
894 |
|
---|
895 | # See <tt>FileTest.readable_real?</tt>.
|
---|
896 | def readable_real?() FileTest.readable_real?(@path) end
|
---|
897 |
|
---|
898 | # See <tt>FileTest.setuid?</tt>.
|
---|
899 | def setuid?() FileTest.setuid?(@path) end
|
---|
900 |
|
---|
901 | # See <tt>FileTest.setgid?</tt>.
|
---|
902 | def setgid?() FileTest.setgid?(@path) end
|
---|
903 |
|
---|
904 | # See <tt>FileTest.size</tt>.
|
---|
905 | def size() FileTest.size(@path) end
|
---|
906 |
|
---|
907 | # See <tt>FileTest.size?</tt>.
|
---|
908 | def size?() FileTest.size?(@path) end
|
---|
909 |
|
---|
910 | # See <tt>FileTest.sticky?</tt>.
|
---|
911 | def sticky?() FileTest.sticky?(@path) end
|
---|
912 |
|
---|
913 | # See <tt>FileTest.symlink?</tt>.
|
---|
914 | def symlink?() FileTest.symlink?(@path) end
|
---|
915 |
|
---|
916 | # See <tt>FileTest.writable?</tt>.
|
---|
917 | def writable?() FileTest.writable?(@path) end
|
---|
918 |
|
---|
919 | # See <tt>FileTest.world_writable?</tt>.
|
---|
920 | def world_writable?() FileTest.world_writable?(@path) end
|
---|
921 |
|
---|
922 | # See <tt>FileTest.writable_real?</tt>.
|
---|
923 | def writable_real?() FileTest.writable_real?(@path) end
|
---|
924 |
|
---|
925 | # See <tt>FileTest.zero?</tt>.
|
---|
926 | def zero?() FileTest.zero?(@path) end
|
---|
927 | end
|
---|
928 |
|
---|
929 |
|
---|
930 | class Pathname # * Dir *
|
---|
931 | # See <tt>Dir.glob</tt>. Returns or yields Pathname objects.
|
---|
932 | def Pathname.glob(*args) # :yield: p
|
---|
933 | if block_given?
|
---|
934 | Dir.glob(*args) {|f| yield self.new(f) }
|
---|
935 | else
|
---|
936 | Dir.glob(*args).map {|f| self.new(f) }
|
---|
937 | end
|
---|
938 | end
|
---|
939 |
|
---|
940 | # See <tt>Dir.getwd</tt>. Returns the current working directory as a Pathname.
|
---|
941 | def Pathname.getwd() self.new(Dir.getwd) end
|
---|
942 | class << self; alias pwd getwd end
|
---|
943 |
|
---|
944 | # Pathname#chdir is *obsoleted* at 1.8.1.
|
---|
945 | def chdir(&block)
|
---|
946 | warn "Pathname#chdir is obsoleted. Use Dir.chdir."
|
---|
947 | Dir.chdir(@path, &block)
|
---|
948 | end
|
---|
949 |
|
---|
950 | # Pathname#chroot is *obsoleted* at 1.8.1.
|
---|
951 | def chroot
|
---|
952 | warn "Pathname#chroot is obsoleted. Use Dir.chroot."
|
---|
953 | Dir.chroot(@path)
|
---|
954 | end
|
---|
955 |
|
---|
956 | # Return the entries (files and subdirectories) in the directory, each as a
|
---|
957 | # Pathname object.
|
---|
958 | def entries() Dir.entries(@path).map {|f| self.class.new(f) } end
|
---|
959 |
|
---|
960 | # Iterates over the entries (files and subdirectories) in the directory. It
|
---|
961 | # yields a Pathname object for each entry.
|
---|
962 | #
|
---|
963 | # This method has existed since 1.8.1.
|
---|
964 | def each_entry(&block) # :yield: p
|
---|
965 | Dir.foreach(@path) {|f| yield self.class.new(f) }
|
---|
966 | end
|
---|
967 |
|
---|
968 | # Pathname#dir_foreach is *obsoleted* at 1.8.1.
|
---|
969 | def dir_foreach(*args, &block)
|
---|
970 | warn "Pathname#dir_foreach is obsoleted. Use Pathname#each_entry."
|
---|
971 | each_entry(*args, &block)
|
---|
972 | end
|
---|
973 |
|
---|
974 | # See <tt>Dir.mkdir</tt>. Create the referenced directory.
|
---|
975 | def mkdir(*args) Dir.mkdir(@path, *args) end
|
---|
976 |
|
---|
977 | # See <tt>Dir.rmdir</tt>. Remove the referenced directory.
|
---|
978 | def rmdir() Dir.rmdir(@path) end
|
---|
979 |
|
---|
980 | # See <tt>Dir.open</tt>.
|
---|
981 | def opendir(&block) # :yield: dir
|
---|
982 | Dir.open(@path, &block)
|
---|
983 | end
|
---|
984 | end
|
---|
985 |
|
---|
986 |
|
---|
987 | class Pathname # * Find *
|
---|
988 | #
|
---|
989 | # Pathname#find is an iterator to traverse a directory tree in a depth first
|
---|
990 | # manner. It yields a Pathname for each file under "this" directory.
|
---|
991 | #
|
---|
992 | # Since it is implemented by <tt>find.rb</tt>, <tt>Find.prune</tt> can be used
|
---|
993 | # to control the traverse.
|
---|
994 | #
|
---|
995 | # If +self+ is <tt>.</tt>, yielded pathnames begin with a filename in the
|
---|
996 | # current directory, not <tt>./</tt>.
|
---|
997 | #
|
---|
998 | def find(&block) # :yield: p
|
---|
999 | require 'find'
|
---|
1000 | if @path == '.'
|
---|
1001 | Find.find(@path) {|f| yield self.class.new(f.sub(%r{\A\./}, '')) }
|
---|
1002 | else
|
---|
1003 | Find.find(@path) {|f| yield self.class.new(f) }
|
---|
1004 | end
|
---|
1005 | end
|
---|
1006 | end
|
---|
1007 |
|
---|
1008 |
|
---|
1009 | class Pathname # * FileUtils *
|
---|
1010 | # See <tt>FileUtils.mkpath</tt>. Creates a full path, including any
|
---|
1011 | # intermediate directories that don't yet exist.
|
---|
1012 | def mkpath
|
---|
1013 | require 'fileutils'
|
---|
1014 | FileUtils.mkpath(@path)
|
---|
1015 | nil
|
---|
1016 | end
|
---|
1017 |
|
---|
1018 | # See <tt>FileUtils.rm_r</tt>. Deletes a directory and all beneath it.
|
---|
1019 | def rmtree
|
---|
1020 | # The name "rmtree" is borrowed from File::Path of Perl.
|
---|
1021 | # File::Path provides "mkpath" and "rmtree".
|
---|
1022 | require 'fileutils'
|
---|
1023 | FileUtils.rm_r(@path)
|
---|
1024 | nil
|
---|
1025 | end
|
---|
1026 | end
|
---|
1027 |
|
---|
1028 |
|
---|
1029 | class Pathname # * mixed *
|
---|
1030 | # Removes a file or directory, using <tt>File.unlink</tt> or
|
---|
1031 | # <tt>Dir.unlink</tt> as necessary.
|
---|
1032 | def unlink()
|
---|
1033 | begin
|
---|
1034 | Dir.unlink @path
|
---|
1035 | rescue Errno::ENOTDIR
|
---|
1036 | File.unlink @path
|
---|
1037 | end
|
---|
1038 | end
|
---|
1039 | alias delete unlink
|
---|
1040 |
|
---|
1041 | # This method is *obsoleted* at 1.8.1. Use #each_line or #each_entry.
|
---|
1042 | def foreach(*args, &block)
|
---|
1043 | warn "Pathname#foreach is obsoleted. Use each_line or each_entry."
|
---|
1044 | if FileTest.directory? @path
|
---|
1045 | # For polymorphism between Dir.foreach and IO.foreach,
|
---|
1046 | # Pathname#foreach doesn't yield Pathname object.
|
---|
1047 | Dir.foreach(@path, *args, &block)
|
---|
1048 | else
|
---|
1049 | IO.foreach(@path, *args, &block)
|
---|
1050 | end
|
---|
1051 | end
|
---|
1052 | end
|
---|
1053 |
|
---|
1054 | module Kernel
|
---|
1055 | # create a pathname object.
|
---|
1056 | #
|
---|
1057 | # This method is available since 1.8.5.
|
---|
1058 | def Pathname(path) # :doc:
|
---|
1059 | Pathname.new(path)
|
---|
1060 | end
|
---|
1061 | private :Pathname
|
---|
1062 | end
|
---|