Class: Resedit::Env

Inherits:
OpenStruct
  • Object
show all
Defined in:
lib/resedit/classes/env.rb

Instance Method Summary collapse

Constructor Details

#initialize(owner = nil) ⇒ Env

Returns a new instance of Env.



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# File 'lib/resedit/classes/env.rb', line 7

def initialize(owner=nil)
    super()
    @owner = owner
    @mode = @owner ? @owner.class::MODE : 16
end

Instance Method Details

#addr2raw16(ss) ⇒ Object 



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# File 'lib/resedit/classes/env.rb', line 23

def addr2raw16(ss)
    ss[0] = '0x'+ss[0] if ss[0][0,2]!='0x'
    ss[1] = '0x'+ss[1] if ss[1][0,2]!='0x'
    fix = 0
    if ss.length == 3
        raise "Dont known how to #{ss[2]} address" if ss[2]!="fix"
        fix = relocFix
    end
    return ((s2i(ss[0])+fix) << 4) + s2i(ss[1])
end

#addr2raw32(ss) ⇒ Object 



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# File 'lib/resedit/classes/env.rb', line 34

def addr2raw32(ss)
    ss[1] = '0x'+ss[1] if ss[1][0,2]!='0x'
    if ss[0]==''
        return @owner.body.addr2raw(s2i(ss[1]))
    end
    ss[0] = 'seg'+ss[0] if ss[0][0,3]!='seg'
    return eval(ss[0]+"+"+ss[1])
end

#s2i(str) ⇒ Object 



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# File 'lib/resedit/classes/env.rb', line 43

def s2i(str)
    ss=str.split(':')
    if ss.length == 2 || ss.length == 3
        return @mode==32 ? addr2raw32(ss) : addr2raw16(ss)
    end
    return eval(str, binding())
end

#s2i_nt(str) ⇒ Object 



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# File 'lib/resedit/classes/env.rb', line 17

def s2i_nt(str)
    return [s2i(str), true]
rescue Exception
    return [0, false]
end

#set(name, value) ⇒ Object 



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# File 'lib/resedit/classes/env.rb', line 13

def set(name, value)
    self[name] = s2i(value)
end

#value2bytes(str, type) ⇒ Object 



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# File 'lib/resedit/classes/env.rb', line 78

def value2bytes(str, type)
    tp = [nil, nil]
    if type && type.length > 0
        tp[0] = type[0]
        t = type[1..-1]
        t = t[1..-1] while t.length > 0 && (t[0]<'0' || t[0]>'9')
        tp[1] = t.to_i
    end
    return str if tp[0] == "s"
    return str+"\x00" if tp[0] == "z"
    if tp[0]=='f' || (File.exists?(str) && !tp[0])
        return File.read(str)
    end
    res = valueBytes(str) if !tp[0] || tp[0] == "b"
    res = valueHex(str, tp) if !res && (!tp[0] || tp[0] == "h")
    res = eval(str, binding()) if !res
    return res if res.is_a?(String)
    res = valueHex(res.to_s(16), tp)
    raise str if res==nil
    return res
    #rescue Exception => e
    #    raise "Bad value: "+e.to_s
end

#valueBytes(str) ⇒ Object 



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# File 'lib/resedit/classes/env.rb', line 69

def valueBytes(str)
    return nil if str[0,2] == '0x' || str[0,2]=='0X'
    return nil if str.length % 2 == 1
    return nil if str[/\H/]
    return [str].pack('H*')
rescue
    return nil
end

#valueHex(s, type) ⇒ Object 



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# File 'lib/resedit/classes/env.rb', line 52

def valueHex(s, type)
    s = s[0..-2] if s[-1] == 'h'
    s = s[2..-1] if s[0,2] == '0x'
    return nil if s.length == 0
    sz = type[1]
    sz = s.length / 2 + s.length % 2 if !sz || sz==0
    hx = eval('0x'+s, binding())
    s=""
    for _ in 0..sz-1
        s += sprintf("%02X", hx & 0xFF)
        hx >>= 8
    end
    return valueBytes(s)
rescue SyntaxError
    return nil
end