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91fb7b9b19
(evil, needs a error) or in the same version (harmless, deserves a mere warning). Noticed by: grehan@, tinderbox
250 lines
6.3 KiB
Awk
250 lines
6.3 KiB
Awk
#
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# Copyright (C) 2006 Daniel M. Eischen. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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#
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# Make a list of all the library versions listed in the master file.
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#
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# versions[] - array indexed by version name, contains number
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# of symbols (+ 1) found for each version.
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# successors[] - array index by version name, contains successor
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# version name.
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# symbols[][] - array index by [version name, symbol index], contains
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# names of symbols defined for each version.
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# names[] - array index is symbol name and value is its first version seen,
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# used to check for duplicate symbols and warn about them.
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#
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BEGIN {
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brackets = 0;
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errors = warns = 0;
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version_count = 0;
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current_version = "";
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stderr = "/dev/stderr";
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while (getline < vfile) {
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# Strip comments.
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sub("#.*$", "", $0);
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# Strip leading and trailing whitespace.
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sub("^[ \t]+", "", $0);
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sub("[ \t]+$", "", $0);
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if (/^[a-zA-Z0-9._]+[ \t]*{$/) {
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# Strip brace.
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sub("{", "", $1);
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brackets++;
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symver = $1;
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versions[symver] = 1;
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successors[symver] = "";
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generated[symver] = 0;
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version_count++;
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}
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else if (/^}[ \t]*[a-zA-Z0-9._]+[ \t]*;$/) {
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v = $1 != "}" ? $1 : $2;
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# Strip brace.
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sub("}", "", v);
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# Strip semicolon.
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sub(";", "", v);
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if (symver == "") {
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printf("File %s: Unmatched bracket.\n",
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vfile) > stderr;
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errors++;
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}
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else if (versions[v] != 1) {
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printf("File %s: `%s' has unknown " \
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"successor `%s'.\n",
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vfile, symver, v) > stderr;
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errors++;
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}
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else
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successors[symver] = v;
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brackets--;
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}
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else if (/^}[ \t]*;$/) {
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if (symver == "") {
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printf("File %s: Unmatched bracket.\n",
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vfile) > stderr;
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errors++;
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}
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# No successor
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brackets--;
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}
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else if (/^}$/) {
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printf("File %s: Missing final semicolon.\n",
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vfile) > stderr;
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errors++;
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}
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else if (/^$/)
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; # Ignore blank lines.
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else {
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printf("File %s: Unknown directive: `%s'.\n",
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vfile, $0) > stderr;
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errors++;
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}
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}
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brackets = 0;
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}
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{
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# Set meaningful filename for diagnostics.
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filename = FILENAME != "" ? FILENAME : "<stdin>";
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# Delete comments, preceding and trailing whitespace, then
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# consume blank lines.
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sub("#.*$", "", $0);
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sub("^[ \t]+", "", $0);
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sub("[ \t]+$", "", $0);
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if ($0 == "")
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next;
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}
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/^[a-zA-Z0-9._]+[ \t]*{$/ {
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# Strip bracket from version name.
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sub("{", "", $1);
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if (current_version != "") {
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printf("File %s, line %d: Illegal nesting detected.\n",
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filename, FNR) > stderr;
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errors++;
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}
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else if (versions[$1] == 0) {
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printf("File %s, line %d: Undefined " \
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"library version `%s'.\n", filename, FNR, $1) > stderr;
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errors++;
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# Remove this entry from the versions.
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delete versions[$1];
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}
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else
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current_version = $1;
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brackets++;
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next;
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}
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/^[a-zA-Z0-9._]+[ \t]*;$/ {
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# Strip semicolon.
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sub(";", "", $1);
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if (current_version != "") {
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count = versions[current_version];
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versions[current_version]++;
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symbols[current_version, count] = $1;
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if ($1 in names && names[$1] != current_version) {
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#
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# A graver case when a dup symbol appears under
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# different versions in the map. That can result
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# in subtle problems with the library later.
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#
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printf("File %s, line %d: Duplicated symbol `%s' " \
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"in version `%s', first seen in `%s'. " \
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"Did you forget to move it to ObsoleteVersions?\n",
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filename, FNR, $1,
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current_version, names[$1]) > stderr;
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errors++;
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}
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else if (names[$1] == current_version) {
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#
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# A harmless case: a dup symbol with the same version.
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#
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printf("File %s, line %d: warning: " \
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"Duplicated symbol `%s' in version `%s'.\n",
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filename, FNR, $1, current_version) > stderr;
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warns++;
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}
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else
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names[$1] = current_version;
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}
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else {
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printf("File %s, line %d: Symbol `%s' outside version scope.\n",
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filename, FNR, $1) > stderr;
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errors++;
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}
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next;
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}
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/^}[ \t]*;$/ {
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brackets--;
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if (brackets < 0) {
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printf("File %s, line %d: Unmatched bracket.\n",
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filename, FNR, $1) > stderr;
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errors++;
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brackets = 0; # Reset
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}
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current_version = "";
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next;
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}
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{
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printf("File %s, line %d: Unknown directive: `%s'.\n",
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filename, FNR, $0) > stderr;
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errors++;
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}
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function print_version(v)
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{
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# This function is recursive, so return if this version
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# has already been printed. Otherwise, if there is an
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# ancestral version, recursively print its symbols before
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# printing the symbols for this version.
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#
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if (generated[v] == 1)
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return;
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if (successors[v] != "")
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print_version(successors[v]);
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printf("%s {\n", v);
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# The version count is always one more that actual,
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# so the loop ranges from 1 to n-1.
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#
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for (i = 1; i < versions[v]; i++) {
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if (i == 1)
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printf("global:\n");
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printf("\t%s;\n", symbols[v, i]);
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}
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version_count--;
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if (version_count == 0) {
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printf("local:\n");
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printf("\t*;\n");
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}
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if (successors[v] == "")
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printf("};\n");
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else
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printf("} %s;\n", successors[v]);
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printf("\n");
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generated[v] = 1;
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}
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END {
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if (errors) {
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printf("%d error(s) total.\n", errors) > stderr;
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exit(1);
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}
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# OK, no errors.
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for (v in versions) {
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print_version(v);
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}
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}
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