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/*
* $Id$
*
* Author: Juan Jose Garcia Ripoll <worm@arrakis.es>.
* Webpage: http://www.arrakis.es/~worm/
*
* cmpdef.cmd - compares two .def files, checking whether they have
* the same entries with the same export codes.
*
* returns 0 if there are no conflicts between the files -- that is,
* the newer one can replace the older one.
*
* returns 1 when either of the files is not properly formatted and
* when there are conflicts: two symbols having the same export code.
*
* the standard output shows a list with newly added symbols, plus
* replaced symbols and conflicts.
*/
parse arg def_file1 def_file2
def_file1 = translate(def_file1,'\','/')
def_file2 = translate(def_file2,'\','/')
call CleanQueue
/*
* `cmp' is zero when the last file is valid and upward compatible
* `numbers' is the stem where symbols are stored
*/
cmp = 0
names. = ''
numbers. = 0
/*
* 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.
*/
'@echo off'
'type' def_file1 '| sed' tidy_up '| sort | rxqueue'
do while queued() > 0
/*
* We retrieve the symbol name (NAME) and its number (NUMBER)
*/
parse pull '"' name '"' '@'number rest
if number = '' || name = '' then
do
say 'Corrupted file' def_file1
say 'Symbol' name 'has no number'
exit 1
end
else
do
numbers.name = number
names.number = name
end
end
/*
* Now we find all public symbols from the new DLL, and compare.
*/
'type' def_file2 '| sed' tidy_up '| sort | rxqueue'
do while queued() > 0
parse pull '"' name '"' '@'number rest
if name = '' | number = '' then
do
say 'Corrupted file' def_file2
say 'Symbol' name 'has no number'
exit 1
end
if numbers.name = 0 then
do
cmp = 1
if names.number = '' then
say 'New symbol' name 'with code @'number
else
say 'Conflict old =' names.number ', new =' name 'at @'number
end
else if numbers.name \= number then
do
cmp = 1
say name 'Symbol' name 'changed from @'numbers.name 'to @'number
end
end /* do */
exit cmp
/*
* Cleans the REXX queue by pulling and forgetting every line.
* This is needed, at least, when `cmpdef.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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