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/****************************************************************************
* Copyright 2020 Thomas E. Dickey *
* Copyright 1998,2006 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/*
* $Id: makedef.cmd,v 1.6 2020/02/02 23:34:34 tom Exp $
*
* Author: Juan Jose Garcia Ripoll <worm@arrakis.es>.
* Webpage: http://www.arrakis.es/~worm/
*
* makedef.cmd - update a DLL export list using a newly created library file
* in a.out format, plus an old .DEF file.
*
* standard output gets a sorted list with all entrypoints with entrycodes.
* This list, plus a few .def sentences (LIBRARY, DESCRIPTION and EXPORT)
* is used to build a new .def file.
*
* `_nc_*' symbols are ignored.
*
* returns 1 when the old def_file is corrupted -- that is, export items are
* not properly formatted.
*
* returns 0 if everything went OK.
*/
parse arg lib_file def_file
lib_file = translate(lib_file,'\','/')
def_file = translate(def_file,'\','/')
call CleanQueue
/*
* `codes' is the stem that links a code to every symbol
* `names' is the stem where symbols are stored sequentially
* `last' is the index of the last symbol defined
*/
last = 0
used. = 0
codes. = 0
names. = ''
tmp_name = 'foo.tmp'
/*
* This sed expression cleans empty lines, comments and special .DEF
* commands, such as LIBRARY..., EXPORTS..., etc
*/
tidy_up = '"/^[A-Z]/d;s/[ ][ ]*/ /g;s/;.*$//g;s/^[ ]*//g;/^[ ]*$/d"'
/*
* First we find all public symbols (functions and variables). Next we
* concatenate this list with the old one, sorting it and wiping out
* all unused data (comments, DLL directives, blanks, etc). All this
* information is pushed into a REXX private list with the RXQUEUE
* utility program.
*/
'@echo off'
'emxexp -u' lib_file '>' tmp_name
'cat' tmp_name def_file '| sed' tidy_up '| sort > foo2.tmp'
'type foo2.tmp | rxqueue'
'del' tmp_name '1>NUL'
/*
* This loop runs over the queue items
*/
do while queued() > 0
/*
* We retrieve the symbol name (NEW_NAME) and its number (NEW_NUMBER)
* When the line comes from `emximp's output, there's no number, so
* we assign it the special value 0.
*/
parse pull new_symbol '@'new_code rest
if Left(new_symbol,1) = '"' then
parse var new_symbol '"' new_name '"' rest
else
do
echo 'Symbol 'new_symbol' was not quoted'
new_name = new_symbol
end
if new_code = '' then
new_code = 0
/*
* Here, one would place all smart checks that would kill unused symbols.
* However, export tables are not that big, so why bothering?
if Left(new_name,4) = '_nc_' then
iterate
*/
/*
* The algorithm:
* IF (this is the 2nd time the symbol appears) THEN
* (this symbol comes from a .DEF file)
* it has a valid code that we store
* we mark that code as used
* ELIF (it has no number) THEN
* (it's a new symbol)
* we increase the counter of defined symbols
* we assign it the special number 0
* (later on it'll be assigned an unused export code)
* ELSE
* this symbol was in the old DLL and it's no longer
* here, so we skip it.
*/
select
when new_name = '' then
'echo Warning: empty symbol found 1>&2'
when names.last = new_name then
do
codes.last = new_code
used.new_code = 1
end
when new_code = 0 then
do
last = last + 1
names.last = new_name
codes.last = 0
end
otherwise
'echo Warning: symbol "'new_name'" has disappeared 1>&2'
end /* select */
end /* do while queued() */
/*
* Finally we scan the stem, writing out all symbols with export codes.
* Those that did not have a valid one (just 0) are assigned a new one.
*/
new_code = 1
inx = 1
do while inx <= last
if codes.inx = 0 then
do
do while used.new_code \= 0
new_code = new_code + 1
end
codes.inx = new_code
used.new_code = 1
end
say ' "'names.inx'" @'codes.inx' NONAME'
inx = inx + 1
end
'del foo2.tmp 1>NUL'
exit 0
/*
* Cleans the REXX queue by pulling and forgetting every line.
* This is needed, at least, when `makedef.cmd' starts, because an aborted
* REXX program might have left some rubbish in.
*/
CleanQueue: procedure
do while queued() > 0
parse pull foo
end
return
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