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|
#!./miniruby -s
$name = $library = $description = nil
module RbConfig
autoload :CONFIG, "rbconfig"
end
class Exports
@subclass = []
def self.inherited(klass)
@subclass << [/#{klass.name.sub(/.*::/, '').downcase}/i, klass]
end
def self.create(*args, &block)
platform = RUBY_PLATFORM
pat, klass = @subclass.find {|p, k| p =~ platform}
unless klass
raise ArgumentError, "unsupported platform: #{platform}"
end
klass.new(*args, &block)
end
def self.extract(objs, *rest)
create(objs).exports(*rest)
end
def self.output(output = $output, &block)
if output
open(output, 'w', &block)
else
yield STDOUT
end
end
def initialize(objs)
syms = {}
winapis = {}
each_export(objs) do |internal, export|
syms[internal] = export
winapis[$1] = internal if /^_?(rb_w32_\w+)(?:@\d+)?$/ =~ internal
end
win32h = File.join(File.dirname(File.dirname(__FILE__)), "include/ruby/win32.h")
IO.foreach(win32h) do |line|
if /^#define (\w+)\((.*?)\)\s+(?:\(void\))?(rb_w32_\w+)\((.*?)\)\s*$/ =~ line and
$2.delete(" ") == $4.delete(" ")
export, internal = $1, $3
if syms[internal] or internal = winapis[internal]
syms[forwarding(internal, export)] = internal
end
end
end
@syms = syms
end
def exports(name = $name, library = $library, description = $description)
exports = []
if name
exports << "Name " + name
elsif library
exports << "Library " + library
end
exports << "Description " + description.dump if description
exports << "EXPORTS" << symbols()
exports
end
private
def forwarding(internal, export)
internal.sub(/^[^@]+/, "\\1#{export}")
end
def each_export(objs)
end
def symbols()
@syms.sort.collect {|k, v| v ? "#{k}=#{v}" : k}
end
end
class Exports::Mswin < Exports
def each_export(objs)
noprefix = ($arch ||= nil and /^(sh|i\d86)/ !~ $arch)
objs = objs.collect {|s| s.tr('/', '\\')}
filetype = nil
IO.popen(%w"dumpbin -symbols -exports" + objs) do |f|
f.each do |l|
if (filetype = l[/^File Type: (.+)/, 1])..(/^\f/ =~ l)
case filetype
when /OBJECT/, /LIBRARY/
next if /^[[:xdigit:]]+ 0+ UNDEF / =~ l
next unless l.sub!(/.*\sExternal\s+\|\s+/, '')
if noprefix or l.sub!(/^_/, '')
next if /@.*@/ =~ l || /@[[:xdigit:]]{16}$/ =~ l
l.sub!(/^/, '_') if /@\d+$/ =~ l
elsif !l.sub!(/^(\S+) \([^@?\`\']*\)$/, '\1')
next
end
when /DLL/
next unless l.sub!(/^\s*\d+\s+[[:xdigit:]]+\s+[[:xdigit:]]+\s+/, '')
else
next
end
yield l.strip
end
end
end
yield "strcasecmp", "msvcrt.stricmp"
yield "strncasecmp", "msvcrt.strnicmp"
end
end
class Exports::Mingw < Exports
def self.nm
@@nm ||= RbConfig::CONFIG["NM"]
end
def each_export(objs)
IO.popen([self.class.nm, "--extern", "--defined", *objs]) do |f|
f.each {|l| yield $1 if / [[:upper:]] _(.*)$/ =~ l}
end
yield "strcasecmp", "_stricmp"
yield "strncasecmp", "_strnicmp"
end
def symbols()
@syms.select {|k, v| v}.sort.collect {|k, v| "#{k}=#{v}"}
end
end
END {
exports = Exports.extract(ARGV)
Exports.output {|f| f.puts(*exports)}
}
|
