aboutsummaryrefslogtreecommitdiff
path: root/misc/makedef.cmd
blob: 68a35692cd436488d7713fabbcff7d6e3696c671 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
/****************************************************************************
 * 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