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+/****************************************************************************
+ * Copyright (c) 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 1.5 2006/04/22 23:14:50 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
+