2 # Copyright (C) 2006 Daniel M. Eischen. All rights reserved.
4 # Redistribution and use in source and binary forms, with or without
5 # modification, are permitted provided that the following conditions
7 # 1. Redistributions of source code must retain the above copyright
8 # notice, this list of conditions and the following disclaimer.
9 # 2. Redistributions in binary form must reproduce the above copyright
10 # notice, this list of conditions and the following disclaimer in the
11 # documentation and/or other materials provided with the distribution.
13 # THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 # ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 # Make a list of all the library versions listed in the master file.
31 # versions[] - array indexed by version name, contains number
32 # of symbols (+ 1) found for each version.
33 # successors[] - array index by version name, contains successor
35 # symbols[][] - array index by [version name, symbol index], contains
36 # names of symbols defined for each version.
37 # names[] - array index is symbol name and value is its first version seen,
38 # used to check for duplicate symbols and warn about them.
45 stderr = "/dev/stderr";
46 while (getline < vfile) {
50 # Strip leading and trailing whitespace.
51 sub("^[ \t]+", "", $0);
52 sub("[ \t]+$", "", $0);
54 if (/^[a-zA-Z0-9._]+[ \t]*{$/) {
60 successors[symver] = "";
61 generated[symver] = 0;
64 else if (/^}[ \t]*[a-zA-Z0-9._]+[ \t]*;$/) {
65 v = $1 != "}" ? $1 : $2;
71 printf("File %s: Unmatched bracket.\n",
75 else if (versions[v] != 1) {
76 printf("File %s: `%s' has unknown " \
78 vfile, symver, v) > stderr;
82 successors[symver] = v;
85 else if (/^}[ \t]*;$/) {
87 printf("File %s: Unmatched bracket.\n",
95 printf("File %s: Missing final semicolon.\n",
100 ; # Ignore blank lines.
102 printf("File %s: Unknown directive: `%s'.\n",
111 # Set meaningful filename for diagnostics.
112 filename = FILENAME != "" ? FILENAME : "<stdin>";
114 # Delete comments, preceding and trailing whitespace, then
115 # consume blank lines.
117 sub("^[ \t]+", "", $0);
118 sub("[ \t]+$", "", $0);
123 /^[a-zA-Z0-9._]+[ \t]*{$/ {
124 # Strip bracket from version name.
126 if (current_version != "") {
127 printf("File %s, line %d: Illegal nesting detected.\n",
128 filename, FNR) > stderr;
131 else if (versions[$1] == 0) {
132 printf("File %s, line %d: Undefined " \
133 "library version `%s'.\n", filename, FNR, $1) > stderr;
135 # Remove this entry from the versions.
139 current_version = $1;
144 /^[a-zA-Z0-9._]+[ \t]*;$/ {
147 if (current_version != "") {
148 count = versions[current_version];
149 versions[current_version]++;
150 symbols[current_version, count] = $1;
151 if ($1 in names && names[$1] != current_version) {
153 # A graver case when a dup symbol appears under
154 # different versions in the map. That can result
155 # in subtle problems with the library later.
157 printf("File %s, line %d: Duplicated symbol `%s' " \
158 "in version `%s', first seen in `%s'. " \
159 "Did you forget to move it to ObsoleteVersions?\n",
161 current_version, names[$1]) > stderr;
164 else if (names[$1] == current_version) {
166 # A harmless case: a dup symbol with the same version.
168 printf("File %s, line %d: warning: " \
169 "Duplicated symbol `%s' in version `%s'.\n",
170 filename, FNR, $1, current_version) > stderr;
174 names[$1] = current_version;
177 printf("File %s, line %d: Symbol `%s' outside version scope.\n",
178 filename, FNR, $1) > stderr;
187 printf("File %s, line %d: Unmatched bracket.\n",
188 filename, FNR, $1) > stderr;
190 brackets = 0; # Reset
192 current_version = "";
198 printf("File %s, line %d: Unknown directive: `%s'.\n",
199 filename, FNR, $0) > stderr;
203 function print_version(v)
205 # This function is recursive, so return if this version
206 # has already been printed. Otherwise, if there is an
207 # ancestral version, recursively print its symbols before
208 # printing the symbols for this version.
210 if (generated[v] == 1)
212 if (successors[v] != "")
213 print_version(successors[v]);
217 # The version count is always one more that actual,
218 # so the loop ranges from 1 to n-1.
220 for (i = 1; i < versions[v]; i++) {
223 printf("\t%s;\n", symbols[v, i]);
227 if (version_count == 0) {
231 if (successors[v] == "")
234 printf("} %s;\n", successors[v]);
242 printf("%d error(s) total.\n", errors) > stderr;
246 for (v in versions) {