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- /*
- * $Id: makedef.cmd,v 1.4 1998/11/22 03:14:08 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
-
-