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+ * $Id: chkdef.cmd,v 1.2 1998/08/29 21:45:58 tom Exp $
+ * Author: Juan Jose Garcia Ripoll <firstname.lastname@example.org>.
+ * Webpage: http://www.arrakis.es/~worm/
+ * chkdef.cmd - checks that a .def file has no conflicts and is properly
+ * formatted.
+ * returns nonzero if two symbols have the same code or a line has a wrong
+ * format.
+ * returns 0 otherwise
+ * the standard output shows conflicts.
+parse arg def_file
+def_file = translate(def_file,'\','/')
+ * `cmp' is zero when the file is valid
+ * `codes' associates a name to a code
+ * `names' associates a code to a name
+cmp = 0
+codes. = 0
+names. = ''
+ * This sed expression cleans empty lines, comments and special .DEF
+ * commands, such as LIBRARY..., EXPORTS..., etc
+tidy_up = '"s/[ ][ ]*/ /g;s/;.*//g;/^[ ]*$/d;/^[a-zA-Z]/d;"'
+ * First we find all public symbols from the original DLL. All this
+ * information is pushed into a REXX private list with the RXQUEUE
+ * utility program.
+'type' def_file '| sed' tidy_up '| sort | rxqueue'
+do while queued() > 0
+ * We retrieve the symbol name (NEW_NAME) and its code (NEW_CODE)
+ parse pull '"' new_name '"' '@'new_code rest
+ when (new_code = '') | (new_name = '') then
+ /* The input was not properly formatted */
+ say 'Error: symbol "'new_name'" has no export code or is empty'
+ cmp = 1
+ when codes.new_name \= 0 then
+ /* This symbol was already defined */
+ if codes.new_name \= new_code then
+ cmp = 2
+ say 'Symbol "'new_name'" multiply defined'
+ when names.new_code \= '' then
+ /* This code was already assigned to a symbol */
+ if names.new_code \= new_name then
+ cmp = 3
+ say 'Conflict with "'names.new_code'" & "'new_name'" being @'new_code
+ codes.new_name = new_code
+ names.new_code = new_name
+ end /* select */
+ do while queued() > 0
+ parse pull foo