Class: Zip::ZipExtraField
- Inherits:
-
Hash
- Object
- Hash
- Zip::ZipExtraField
show all
- Defined in:
- lib/zip/zip.rb
Defined Under Namespace
Classes: Generic, IUnix, UniversalTime
Constant Summary
collapse
- ID_MAP =
{}
Instance Method Summary
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Constructor Details
#initialize(binstr = nil) ⇒ ZipExtraField
start main of ZipExtraField < Hash
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# File 'lib/zip/zip.rb', line 1457
def initialize(binstr = nil)
binstr and merge(binstr)
end
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Instance Method Details
#c_dir_length ⇒ Object
Also known as:
c_dir_size
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# File 'lib/zip/zip.rb', line 1525
def c_dir_length
to_c_dir_bin.length
end
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#create(name) ⇒ Object
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# File 'lib/zip/zip.rb', line 1494
def create(name)
field_class = nil
ID_MAP.each { |id, klass|
if klass.name == name
field_class = klass
break
end
}
if ! field_class
raise ZipError, "Unknown extra field '#{name}'"
end
self[name] = field_class.new()
end
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#local_length ⇒ Object
Also known as:
local_size, length, size
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# File 'lib/zip/zip.rb', line 1528
def local_length
to_local_bin.length
end
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#merge(binstr) ⇒ Object
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# File 'lib/zip/zip.rb', line 1461
def merge(binstr)
binstr == "" and return
i = 0
while i < binstr.length
id = binstr[i,2]
len = binstr[i+2,2].to_s.unpack("v")[0]
if id && ID_MAP.member?(id)
field_name = ID_MAP[id].name
if self.member?(field_name)
self[field_name].mergea(binstr[i, len+4])
else
field_obj = ID_MAP[id].new(binstr[i, len+4])
self[field_name] = field_obj
end
elsif id
unless self["Unknown"]
s = ""
class << s
alias_method :to_c_dir_bin, :to_s
alias_method :to_local_bin, :to_s
end
self["Unknown"] = s
end
if ! len || len+4 > binstr[i..-1].length
self["Unknown"] << binstr[i..-1]
break;
end
self["Unknown"] << binstr[i, len+4]
end
i += len+4
end
end
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#to_c_dir_bin ⇒ Object
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# File 'lib/zip/zip.rb', line 1517
def to_c_dir_bin
s = ""
each { |k, v|
s << v.to_c_dir_bin
}
s
end
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#to_local_bin ⇒ Object
Also known as:
to_s
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# File 'lib/zip/zip.rb', line 1508
def to_local_bin
s = ""
each { |k, v|
s << v.to_local_bin
}
s
end
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