ruby-changes:25834
From: tenderlove <ko1@a...>
Date: Tue, 27 Nov 2012 14:59:48 +0900 (JST)
Subject: [ruby-changes:25834] tenderlove:r37891 (trunk): reverting r37881
tenderlove 2012-11-27 14:59:34 +0900 (Tue, 27 Nov 2012) New Revision: 37891 http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=37891 Log: reverting r37881 Removed files: trunk/ext/fiddle/handle.c trunk/ext/fiddle/pointer.c trunk/test/fiddle/test_func.rb trunk/test/fiddle/test_handle.rb trunk/test/fiddle/test_pointer.rb Modified files: trunk/ChangeLog trunk/ext/dl/lib/dl/struct.rb trunk/ext/fiddle/extconf.rb trunk/ext/fiddle/fiddle.c trunk/ext/fiddle/fiddle.h trunk/ext/fiddle/function.c trunk/ext/fiddle/lib/fiddle/function.rb trunk/ext/fiddle/lib/fiddle.rb trunk/test/dl/test_callback.rb trunk/test/fiddle/helper.rb trunk/test/fiddle/test_closure.rb trunk/test/fiddle/test_fiddle.rb Index: ChangeLog =================================================================== --- ChangeLog (revision 37890) +++ ChangeLog (revision 37891) @@ -46,30 +46,6 @@ test for the above. * NEWS: news for the above. -Tue Nov 27 10:37:44 2012 Aaron Patterson <aaron@t...> - - * ext/fiddle/handle.c: Make Fiddle independent of DL, copy DL::Handle - to Fiddle::Handle. - * ext/fiddle/pointer.c: Make Fiddle independent of DL, copy - DL::Pointer to Fiddle::Pointer. - * test/fiddle/test_func.rb: relevent tests - * test/fiddle/test_handle.rb: ditto - * test/fiddle/test_pointer.rb: ditto - * ext/dl/lib/dl/struct.rb: use Fiddle::Pointer if available - * ext/fiddle/extconf.rb: check for dlfcn.h - * ext/fiddle/fiddle.c: add constants for sizeof() things - * ext/fiddle/fiddle.h: include dlfcn.h - * ext/fiddle/function.c: expose a C function for creating new - Fiddle::Function objects. - * ext/fiddle/lib/fiddle.rb: include constants for dl backwards compat - * ext/fiddle/lib/fiddle/function.rb: read the pointer from the - function for dl backwards compat. - * test/dl/test_callback.rb: check the addresses of the pointers rather - than their types. - * test/fiddle/helper.rb: remove dependency on dl - * test/fiddle/test_closure.rb: ditto - * test/fiddle/test_fiddle.rb: ditto - Tue Nov 27 09:59:16 2012 Nobuyoshi Nakada <nobu@r...> * ext/extmk.rb (extmake): close mkmf.log for each libraries so that Index: ext/dl/lib/dl/struct.rb =================================================================== --- ext/dl/lib/dl/struct.rb (revision 37890) +++ ext/dl/lib/dl/struct.rb (revision 37891) @@ -76,7 +76,7 @@ end # A C struct wrapper - class CStructEntity < (DL.fiddle? ? Fiddle::Pointer : CPtr) + class CStructEntity < CPtr include PackInfo include ValueUtil Index: ext/fiddle/pointer.c =================================================================== --- ext/fiddle/pointer.c (revision 37890) +++ ext/fiddle/pointer.c (revision 37891) @@ -1,691 +0,0 @@ -/* -*- C -*- - * $Id$ - */ - -#include <ruby/ruby.h> -#include <ruby/io.h> -#include <ctype.h> -#include <fiddle.h> - -VALUE rb_cPointer; - -typedef void (*freefunc_t)(void*); - -struct ptr_data { - void *ptr; - long size; - freefunc_t free; - VALUE wrap[2]; -}; - -#define RPTR_DATA(obj) ((struct ptr_data *)(DATA_PTR(obj))) - -static inline freefunc_t -get_freefunc(VALUE func, volatile VALUE *wrap) -{ - VALUE addrnum; - if (NIL_P(func)) { - *wrap = 0; - return NULL; - } - addrnum = rb_Integer(func); - *wrap = (addrnum != func) ? func : 0; - return (freefunc_t)(VALUE)NUM2PTR(addrnum); -} - -static ID id_to_ptr; - -static void -dlptr_mark(void *ptr) -{ - struct ptr_data *data = ptr; - if (data->wrap[0]) { - rb_gc_mark(data->wrap[0]); - } - if (data->wrap[1]) { - rb_gc_mark(data->wrap[1]); - } -} - -static void -dlptr_free(void *ptr) -{ - struct ptr_data *data = ptr; - if (data->ptr) { - if (data->free) { - (*(data->free))(data->ptr); - } - } -} - -static size_t -dlptr_memsize(const void *ptr) -{ - const struct ptr_data *data = ptr; - return data ? sizeof(*data) + data->size : 0; -} - -static const rb_data_type_t dlptr_data_type = { - "fiddle/pointer", - {dlptr_mark, dlptr_free, dlptr_memsize,}, -}; - -VALUE -rb_dlptr_new2(VALUE klass, void *ptr, long size, freefunc_t func) -{ - struct ptr_data *data; - VALUE val; - - rb_secure(4); - val = TypedData_Make_Struct(klass, struct ptr_data, &dlptr_data_type, data); - data->ptr = ptr; - data->free = func; - data->size = size; - OBJ_TAINT(val); - - return val; -} - -VALUE -rb_dlptr_new(void *ptr, long size, freefunc_t func) -{ - return rb_dlptr_new2(rb_cPointer, ptr, size, func); -} - -VALUE -rb_dlptr_malloc(long size, freefunc_t func) -{ - void *ptr; - - rb_secure(4); - ptr = ruby_xmalloc((size_t)size); - memset(ptr,0,(size_t)size); - return rb_dlptr_new(ptr, size, func); -} - -void * -rb_dlptr2cptr(VALUE val) -{ - struct ptr_data *data; - void *ptr; - - if (rb_obj_is_kind_of(val, rb_cPointer)) { - TypedData_Get_Struct(val, struct ptr_data, &dlptr_data_type, data); - ptr = data->ptr; - } - else if (val == Qnil) { - ptr = NULL; - } - else{ - rb_raise(rb_eTypeError, "DL::PtrData was expected"); - } - - return ptr; -} - -static VALUE -rb_dlptr_s_allocate(VALUE klass) -{ - VALUE obj; - struct ptr_data *data; - - rb_secure(4); - obj = TypedData_Make_Struct(klass, struct ptr_data, &dlptr_data_type, data); - data->ptr = 0; - data->size = 0; - data->free = 0; - - return obj; -} - -/* - * call-seq: - * DL::CPtr.new(address) => dl_cptr - * DL::CPtr.new(address, size) => dl_cptr - * DL::CPtr.new(address, size, freefunc) => dl_cptr - * - * Create a new pointer to +address+ with an optional +size+ and +freefunc+. - * +freefunc+ will be called when the instance is garbage collected. - */ -static VALUE -rb_dlptr_initialize(int argc, VALUE argv[], VALUE self) -{ - VALUE ptr, sym, size, wrap = 0, funcwrap = 0; - struct ptr_data *data; - void *p = NULL; - freefunc_t f = NULL; - long s = 0; - - if (rb_scan_args(argc, argv, "12", &ptr, &size, &sym) >= 1) { - VALUE addrnum = rb_Integer(ptr); - if (addrnum != ptr) wrap = ptr; - p = NUM2PTR(addrnum); - } - if (argc >= 2) { - s = NUM2LONG(size); - } - if (argc >= 3) { - f = get_freefunc(sym, &funcwrap); - } - - if (p) { - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - if (data->ptr && data->free) { - /* Free previous memory. Use of inappropriate initialize may cause SEGV. */ - (*(data->free))(data->ptr); - } - data->wrap[0] = wrap; - data->wrap[1] = funcwrap; - data->ptr = p; - data->size = s; - data->free = f; - } - - return Qnil; -} - -/* - * call-seq: - * - * Fiddle::Pointer.malloc(size, freefunc = nil) => fiddle pointer instance - * - * Allocate +size+ bytes of memory and associate it with an optional - * +freefunc+ that will be called when the pointer is garbage collected. - * +freefunc+ must be an address pointing to a function or an instance of - * Fiddle::Function - */ -static VALUE -rb_dlptr_s_malloc(int argc, VALUE argv[], VALUE klass) -{ - VALUE size, sym, obj, wrap = 0; - long s; - freefunc_t f; - - switch (rb_scan_args(argc, argv, "11", &size, &sym)) { - case 1: - s = NUM2LONG(size); - f = NULL; - break; - case 2: - s = NUM2LONG(size); - f = get_freefunc(sym, &wrap); - break; - default: - rb_bug("rb_dlptr_s_malloc"); - } - - obj = rb_dlptr_malloc(s,f); - if (wrap) RPTR_DATA(obj)->wrap[1] = wrap; - - return obj; -} - -/* - * call-seq: to_i - * - * Returns the integer memory location of this DL::CPtr. - */ -static VALUE -rb_dlptr_to_i(VALUE self) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return PTR2NUM(data->ptr); -} - -/* - * call-seq: to_value - * - * Cast this CPtr to a ruby object. - */ -static VALUE -rb_dlptr_to_value(VALUE self) -{ - struct ptr_data *data; - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return (VALUE)(data->ptr); -} - -/* - * call-seq: ptr - * - * Returns a DL::CPtr that is a dereferenced pointer for this DL::CPtr. - * Analogous to the star operator in C. - */ -VALUE -rb_dlptr_ptr(VALUE self) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return rb_dlptr_new(*((void**)(data->ptr)),0,0); -} - -/* - * call-seq: ref - * - * Returns a DL::CPtr that is a reference pointer for this DL::CPtr. - * Analogous to the ampersand operator in C. - */ -VALUE -rb_dlptr_ref(VALUE self) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return rb_dlptr_new(&(data->ptr),0,0); -} - -/* - * call-seq: null? - * - * Returns true if this is a null pointer. - */ -VALUE -rb_dlptr_null_p(VALUE self) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - return data->ptr ? Qfalse : Qtrue; -} - -/* - * call-seq: free=(function) - * - * Set the free function for this pointer to the DL::CFunc in +function+. - */ -static VALUE -rb_dlptr_free_set(VALUE self, VALUE val) -{ - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - data->free = get_freefunc(val, &data->wrap[1]); - - return Qnil; -} - -/* - * call-seq: free - * - * Get the free function for this pointer. Returns Fiddle::Function. - */ -static VALUE -rb_dlptr_free_get(VALUE self) -{ - struct ptr_data *pdata; - VALUE address; - VALUE arg_types; - VALUE ret_type; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, pdata); - - if (!pdata->free) - return Qnil; - - address = PTR2NUM(pdata->free); - ret_type = INT2NUM(TYPE_VOID); - arg_types = rb_ary_new(); - rb_ary_push(arg_types, INT2NUM(TYPE_VOIDP)); - - return rb_fiddle_new_function(address, arg_types, ret_type); -} - -/* - * call-seq: - * - * ptr.to_s => string - * ptr.to_s(len) => string - * - * Returns the pointer contents as a string. When called with no arguments, - * this method will return the contents until the first NULL byte. When - * called with +len+, a string of +len+ bytes will be returned. - */ -static VALUE -rb_dlptr_to_s(int argc, VALUE argv[], VALUE self) -{ - struct ptr_data *data; - VALUE arg1, val; - int len; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - switch (rb_scan_args(argc, argv, "01", &arg1)) { - case 0: - val = rb_tainted_str_new2((char*)(data->ptr)); - break; - case 1: - len = NUM2INT(arg1); - val = rb_tainted_str_new((char*)(data->ptr), len); - break; - default: - rb_bug("rb_dlptr_to_s"); - } - - return val; -} - -/* - * call-seq: - * - * ptr.to_str => string - * ptr.to_str(len) => string - * - * Returns the pointer contents as a string. When called with no arguments, - * this method will return the contents with the length of this pointer's - * +size+. When called with +len+, a string of +len+ bytes will be returned. - */ -static VALUE -rb_dlptr_to_str(int argc, VALUE argv[], VALUE self) -{ - struct ptr_data *data; - VALUE arg1, val; - int len; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - switch (rb_scan_args(argc, argv, "01", &arg1)) { - case 0: - val = rb_tainted_str_new((char*)(data->ptr),data->size); - break; - case 1: - len = NUM2INT(arg1); - val = rb_tainted_str_new((char*)(data->ptr), len); - break; - default: - rb_bug("rb_dlptr_to_str"); - } - - return val; -} - -/* - * call-seq: inspect - * - * Returns a string formatted with an easily readable representation of the - * internal state of the DL::CPtr - */ -static VALUE -rb_dlptr_inspect(VALUE self) -{ - struct ptr_data *data; - char str[1024]; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - snprintf(str, 1023, "#<%s:%p ptr=%p size=%ld free=%p>", - rb_class2name(CLASS_OF(self)), data, data->ptr, data->size, data->free); - return rb_str_new2(str); -} - -/* - * call-seq: - * ptr == other => true or false - * ptr.eql?(other) => true or false - * - * Returns true if +other+ wraps the same pointer, otherwise returns - * false. - */ -VALUE -rb_dlptr_eql(VALUE self, VALUE other) -{ - void *ptr1, *ptr2; - - if(!rb_obj_is_kind_of(other, rb_cPointer)) return Qfalse; - - ptr1 = rb_dlptr2cptr(self); - ptr2 = rb_dlptr2cptr(other); - - return ptr1 == ptr2 ? Qtrue : Qfalse; -} - -/* - * call-seq: - * ptr <=> other => -1, 0, 1, or nil - * - * Returns -1 if less than, 0 if equal to, 1 if greater than +other+. Returns - * nil if +ptr+ cannot be compared to +other+. - */ -static VALUE -rb_dlptr_cmp(VALUE self, VALUE other) -{ - void *ptr1, *ptr2; - SIGNED_VALUE diff; - - if(!rb_obj_is_kind_of(other, rb_cPointer)) return Qnil; - - ptr1 = rb_dlptr2cptr(self); - ptr2 = rb_dlptr2cptr(other); - diff = (SIGNED_VALUE)ptr1 - (SIGNED_VALUE)ptr2; - if (!diff) return INT2FIX(0); - return diff > 0 ? INT2NUM(1) : INT2NUM(-1); -} - -/* - * call-seq: - * ptr + n => new cptr - * - * Returns a new DL::CPtr that has been advanced +n+ bytes. - */ -static VALUE -rb_dlptr_plus(VALUE self, VALUE other) -{ - void *ptr; - long num, size; - - ptr = rb_dlptr2cptr(self); - size = RPTR_DATA(self)->size; - num = NUM2LONG(other); - return rb_dlptr_new((char *)ptr + num, size - num, 0); -} - -/* - * call-seq: - * ptr - n => new cptr - * - * Returns a new DL::CPtr that has been moved back +n+ bytes. - */ -static VALUE -rb_dlptr_minus(VALUE self, VALUE other) -{ - void *ptr; - long num, size; - - ptr = rb_dlptr2cptr(self); - size = RPTR_DATA(self)->size; - num = NUM2LONG(other); - return rb_dlptr_new((char *)ptr - num, size + num, 0); -} - -/* - * call-seq: - * ptr[index] -> an_integer - * ptr[start, length] -> a_string - * - * Returns integer stored at _index_. If _start_ and _length_ are given, - * a string containing the bytes from _start_ of length _length_ will be - * returned. - */ -VALUE -rb_dlptr_aref(int argc, VALUE argv[], VALUE self) -{ - VALUE arg0, arg1; - VALUE retval = Qnil; - size_t offset, len; - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - if (!data->ptr) rb_raise(rb_eFiddleError, "NULL pointer dereference"); - switch( rb_scan_args(argc, argv, "11", &arg0, &arg1) ){ - case 1: - offset = NUM2ULONG(arg0); - retval = INT2NUM(*((char *)data->ptr + offset)); - break; - case 2: - offset = NUM2ULONG(arg0); - len = NUM2ULONG(arg1); - retval = rb_tainted_str_new((char *)data->ptr + offset, len); - break; - default: - rb_bug("rb_dlptr_aref()"); - } - return retval; -} - -/* - * call-seq: - * ptr[index] = int -> int - * ptr[start, length] = string or cptr or addr -> string or dl_cptr or addr - * - * Set the value at +index+ to +int+. Or, set the memory at +start+ until - * +length+ with the contents of +string+, the memory from +dl_cptr+, or the - * memory pointed at by the memory address +addr+. - */ -VALUE -rb_dlptr_aset(int argc, VALUE argv[], VALUE self) -{ - VALUE arg0, arg1, arg2; - VALUE retval = Qnil; - size_t offset, len; - void *mem; - struct ptr_data *data; - - TypedData_Get_Struct(self, struct ptr_data, &dlptr_data_type, data); - if (!data->ptr) rb_raise(rb_eFiddleError, "NULL pointer dereference"); - switch( rb_scan_args(argc, argv, "21", &arg0, &arg1, &arg2) ){ - case 2: - offset = NUM2ULONG(arg0); - ((char*)data->ptr)[offset] = NUM2UINT(arg1); - retval = arg1; - break; - case 3: - offset = NUM2ULONG(arg0); - len = NUM2ULONG(arg1); - if (RB_TYPE_P(arg2, T_STRING)) { - mem = StringValuePtr(arg2); - } - else if( rb_obj_is_kind_of(arg2, rb_cPointer) ){ - mem = rb_dlptr2cptr(arg2); - } - else{ - mem = NUM2PTR(arg2); - } - memcpy((char *)data->ptr + offset, mem, len); - retval = arg2; - break; - default: - rb_bug("rb_dlptr_aset()"); - } - return retval; -} - -/* - * call-seq: size=(size) - * - * Set the size of this pointer to +size+ - */ -static VALUE -rb_dlptr_size_set(VALUE self, VALUE size) -{ - RPTR_DATA(self)->size = NUM2LONG(size); - return size; -} - -/* - * call-seq: size - * - * Get the size of this pointer. - */ -static VALUE -rb_dlptr_size_get(VALUE self) -{ - return LONG2NUM(RPTR_DATA(self)->size); -} - -/* - * call-seq: - * Fiddle::Pointer.to_ptr(val) => cptr - * Fiddle::Pointer[val] => cptr - * - * Get the underlying pointer for ruby object +val+ and return it as a - * Fiddle::Pointer object. - */ -static VALUE -rb_dlptr_s_to_ptr(VALUE self, VALUE val) -{ - VALUE ptr, wrap = val, vptr; - - if (RTEST(rb_obj_is_kind_of(val, rb_cIO))){ - rb_io_t *fptr; - FILE *fp; - GetOpenFile(val, fptr); - fp = rb_io_stdio_file(fptr); - ptr = rb_dlptr_new(fp, 0, NULL); - } - else if (RTEST(rb_obj_is_kind_of(val, rb_cString))){ - char *str = StringValuePtr(val); - ptr = rb_dlptr_new(str, RSTRING_LEN(val), NULL); - } - else if ((vptr = rb_check_funcall(val, id_to_ptr, 0, 0)) != Qundef){ - if (rb_obj_is_kind_of(vptr, rb_cPointer)){ - ptr = vptr; - wrap = 0; - } - else{ - rb_raise(rb_eFiddleError, "to_ptr should return a Fiddle::Pointer object"); - } - } - else{ - VALUE num = rb_Integer(val); - if (num == val) wrap = 0; - ptr = rb_dlptr_new(NUM2PTR(num), 0, NULL); - } - OBJ_INFECT(ptr, val); - if (wrap) RPTR_DATA(ptr)->wrap[0] = wrap; - return ptr; -} - -void -Init_fiddle_pointer(void) -{ - id_to_ptr = rb_intern("to_ptr"); - - /* Document-class: Fiddle::Pointer - * - * Fiddle::Pointer is a class to handle C pointers - * - */ - rb_cPointer = rb_define_class_under(mFiddle, "Pointer", rb_cObject); - rb_define_alloc_func(rb_cPointer, rb_dlptr_s_allocate); - rb_define_singleton_method(rb_cPointer, "malloc", rb_dlptr_s_malloc, -1); - rb_define_singleton_method(rb_cPointer, "to_ptr", rb_dlptr_s_to_ptr, 1); - rb_define_singleton_method(rb_cPointer, "[]", rb_dlptr_s_to_ptr, 1); - rb_define_method(rb_cPointer, "initialize", rb_dlptr_initialize, -1); - rb_define_method(rb_cPointer, "free=", rb_dlptr_free_set, 1); - rb_define_method(rb_cPointer, "free", rb_dlptr_free_get, 0); - rb_define_method(rb_cPointer, "to_i", rb_dlptr_to_i, 0); - rb_define_method(rb_cPointer, "to_int", rb_dlptr_to_i, 0); - rb_define_method(rb_cPointer, "to_value", rb_dlptr_to_value, 0); - rb_define_method(rb_cPointer, "ptr", rb_dlptr_ptr, 0); - rb_define_method(rb_cPointer, "+@", rb_dlptr_ptr, 0); - rb_define_method(rb_cPointer, "ref", rb_dlptr_ref, 0); - rb_define_method(rb_cPointer, "-@", rb_dlptr_ref, 0); - rb_define_method(rb_cPointer, "null?", rb_dlptr_null_p, 0); - rb_define_method(rb_cPointer, "to_s", rb_dlptr_to_s, -1); - rb_define_method(rb_cPointer, "to_str", rb_dlptr_to_str, -1); - rb_define_method(rb_cPointer, "inspect", rb_dlptr_inspect, 0); - rb_define_method(rb_cPointer, "<=>", rb_dlptr_cmp, 1); - rb_define_method(rb_cPointer, "==", rb_dlptr_eql, 1); - rb_define_method(rb_cPointer, "eql?", rb_dlptr_eql, 1); - rb_define_method(rb_cPointer, "+", rb_dlptr_plus, 1); - rb_define_method(rb_cPointer, "-", rb_dlptr_minus, 1); - rb_define_method(rb_cPointer, "[]", rb_dlptr_aref, -1); - rb_define_method(rb_cPointer, "[]=", rb_dlptr_aset, -1); - rb_define_method(rb_cPointer, "size", rb_dlptr_size_get, 0); - rb_define_method(rb_cPointer, "size=", rb_dlptr_size_set, 1); - - /* Document-const: NULL - * - * A NULL pointer - */ - rb_define_const(mFiddle, "NULL", rb_dlptr_new(0, 0, 0)); -} Index: ext/fiddle/handle.c =================================================================== --- ext/fiddle/handle.c (revision 37890) +++ ext/fiddle/handle.c (revision 37891) @@ -1,465 +0,0 @@ -#include <ruby.h> -#include <fiddle.h> - -VALUE rb_cHandle; - -struct dl_handle { - void *ptr; - int open; - int enable_close; -}; - -#ifdef _WIN32 -# ifndef _WIN32_WCE -static void * -w32_coredll(void) -{ - MEMORY_BASIC_INFORMATION m; - memset(&m, 0, sizeof(m)); - if( !VirtualQuery(_errno, &m, sizeof(m)) ) return NULL; - return m.AllocationBase; -} -# endif - -static int -w32_dlclose(void *ptr) -{ -# ifndef _WIN32_WCE - if( ptr == w32_coredll() ) return 0; -# endif - if( FreeLibrary((HMODULE)ptr) ) return 0; - return errno = rb_w32_map_errno(GetLastError()); -} -#define dlclose(ptr) w32_dlclose(ptr) -#endif - -static void -dlhandle_free(void *ptr) -{ - struct dl_handle *dlhandle = ptr; - i (... truncated) -- ML: ruby-changes@q... Info: http://www.atdot.net/~ko1/quickml/