Class: Deplate::Variables

Inherits:
Hash
  • Object
show all
Defined in:
lib/deplate/variables.rb

Overview

variables.rb @Author: Thomas Link (micathom AT gmail com) @License: GPL (see www.gnu.org/licenses/gpl.txt) @Created: 31-Dez-2005. @Revision: 0.75

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(deplate = nil) ⇒ Variables

Returns a new instance of Variables.



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# File 'lib/deplate/variables.rb', line 11

def initialize(deplate=nil)
    super()
    @deplate  = deplate
    @priority = false
end

Instance Attribute Details

#deplate ⇒ Object

Returns the value of attribute deplate.



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# File 'lib/deplate/variables.rb', line 9

def deplate
  @deplate
end

Instance Method Details

#[](name) ⇒ Object 



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# File 'lib/deplate/variables.rb', line 75

def [](name)
    begin
        if !name.kind_of?(String) or keys.include?(name)
            return super
        # elsif name =~ /^no(\S+)$/ and (keys.include?($1) or keys.include?(name))
        #     return !super($1)
        elsif name =~ /^\S+\(.*?\)$/
            m = /^(\S+)\((.*?)?\)$/.match(name)
            if m
                method = m[1]
                args   = m[2]
                args, text = @deplate.input.parse_args(args, nil, false)
                rv = @deplate.formatter.invoke_service(method, args, text)
                return rv
            else
                Deplate::Core.log(['Malformed variable name', name], :error)
            end
        elsif name =~ /^:(\S+)$/
            n = $1
            if @deplate.is_allowed?(':', :logger => self)
                return @deplate.options.send(n)
            end
        elsif (m = /^(\S+)\[(\S+)\]$/.match(name))
            key   = m[1]
            field = m[2]
            val   = self[key]
            return extract(val, key, field)
        elsif (m = /^(\S+)\.(\S+)$/.match(name))
            if @deplate.is_allowed?('.', :logger => self)
                key  = m[1]
                meth = m[2]
                val  = self[key]
                begin
                    return val.send(meth)
                rescue Exception => e
                    log(['Invoking method failed', meth, val.class], :error)
                end
            else
                log(['No permission', name], :anyway)
            end
        end
    rescue Exception => e
        Deplate::Core.log(['Retrieving doc variable failed', name, e], :error)
    end
    return nil
end

#[]=(name, value) ⇒ Object 



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# File 'lib/deplate/variables.rb', line 36

def []=(name, value)
    if name =~ /^[[:upper:]]+?([@\[]|$)/ and !@priority
        Deplate::Core.log(['No permisson', name, value], :error)
        return
    end
    if name.kind_of?(String) and (m = /^(\S+)\[(\S+)?\]$/.match(name))
        key   = m[1]
        field = m[2]
        var   = self[key]
        if !var
            if !field
                self[key] = [value]
            elsif field =~ /^[0-9]$/
                self[key] = []
                self[key][field.to_i] = value
            else
                self[key] = {field => value}
            end
        elsif var.kind_of?(Struct) || var.kind_of?(OpenStruct)
            var.send("#{field}=", value)
        elsif var.kind_of?(Hash)
            var[field] = value
        elsif var.kind_of?(Array)
            if !field
                var << value
            elsif field =~ /^[0-9]+$/
                field = field.to_i
                var[field] = value
            else
                Deplate::Core.log(['Wrong index', field, name, var.class], :error)
            end
        elsif var
            Deplate::Core.log(['Doc variable has wrong type', key, var.class], :error)
        end
    else
        super(name, value)
    end
end

#extract(val, key, field) ⇒ Object 



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# File 'lib/deplate/variables.rb', line 122

def extract(val, key, field)
    if val.nil?
        Deplate::Core.log(['Unknown variable', key], :error)
    elsif val.kind_of?(Struct) || val.kind_of?(OpenStruct)
        return val.send(field)
    elsif val.kind_of?(Hash)
        return val[field]
    elsif val.kind_of?(Array)
        if field =~ /^[0-9]+$/
            field = field.to_i
            return val[field]
        else
            Deplate::Core.log(['Wrong index', field, name, val.class], :error)
        end
    elsif val.respond_to?('[]')
        return val[field]
    else
        Deplate::Core.log(['Variable has wrong type', key, val.class], :warning)
    end
end

#log(*args) ⇒ Object 



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# File 'lib/deplate/variables.rb', line 17

def log(*args)
    Deplate::Core.log(*args)
end

#set_value(name, value) ⇒ Object 



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# File 'lib/deplate/variables.rb', line 27

def set_value(name, value)
    begin
        @priority = true
        self[name] = value
    ensure
        @priority = false
    end
end

#update(hash) ⇒ Object 



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# File 'lib/deplate/variables.rb', line 21

def update(hash)
    for key, val in hash
        self[key] = val
    end
end