1# 2# Copyright (C) 2006 Daniel M. Eischen. All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions 6# are met: 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. 12# 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 23# SUCH DAMAGE. 24# 25# $FreeBSD$ 26# 27 28# 29# Make a list of all the library versions listed in the master file. 30# 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 34# version name. 35# symbols[][] - array index by [version name, symbol index], contains 36# names of symbols defined for each version. 37# 38BEGIN { 39 brackets = 0; 40 errors = 0; 41 version_count = 0; 42 current_version = ""; 43 stderr = "/dev/stderr"; 44 while (getline < vfile) { 45 # Strip comments. 46 sub("#.*$", "", $0); 47 48 # Strip trailing spaces. 49 sub(" *$", "", $0); 50 51 if (/^[ \t]*[a-zA-Z0-9._]+ *{/) { 52 brackets++; 53 symver = $1; 54 versions[symver] = 1; 55 successors[symver] = ""; 56 generated[symver] = 0; 57 version_count++; 58 } 59 else if (/^[ \t]*} *[a-zA-Z0-9._]+ *;/) { 60 # Strip semicolon. 61 gsub(";", "", $2); 62 if (symver == "") 63 printf("Unmatched bracket.\n"); 64 else if (versions[$2] != 1) 65 printf("File %s: %s has unknown " \ 66 "successor %s\n", vfile, symver, $2); 67 else 68 successors[symver] = $2; 69 brackets--; 70 } 71 else if (/^[ \t]*};/) { 72 if (symver == "") 73 printf("File %s: Unmatched bracket.\n", 74 vfile) > stderr; 75 # No successor 76 brackets--; 77 } 78 else if (/^[ \t]*}/) { 79 printf("File %s: Missing ending semi-colon.\n", 80 vfile) > stderr; 81 } 82 else if (/^$/) 83 ; # Ignore blank lines. 84 else 85 printf("File %s: Unknown directive: %s\n", 86 vfile, $0) > stderr; 87 } 88 brackets = 0; 89} 90 91/.*/ { 92 # Delete comments, preceding and trailing whitespace, then 93 # consume blank lines. 94 sub("#.*$", "", $0); 95 sub("^[ \t]+", "", $0); 96 sub("[ \t]+$", "", $0); 97 if ($0 == "") 98 next; 99} 100 101/^[a-zA-Z0-9._]+ +{$/ { 102 # Strip bracket from version name. 103 sub("{", "", $1); 104 if (current_version != "") 105 printf("File %s, line %d: Illegal nesting detected.\n", 106 FILENAME, FNR) > stderr; 107 else if (versions[$1] == 0) { 108 printf("File %s, line %d: Undefined " \ 109 "library version %s\n", FILENAME, FNR, $1) > stderr; 110 # Remove this entry from the versions. 111 delete versions[$1]; 112 } 113 else 114 current_version = $1; 115 brackets++; 116 next; 117} 118 119/^[a-zA-Z0-9._]+ *;$/ { 120 if (current_version != "") { 121 count = versions[current_version]; 122 versions[current_version]++; 123 symbols[current_version, count] = $1; 124 } 125 next; 126} 127 128/^} *;$/ { 129 brackets--; 130 if (brackets < 0) { 131 printf("File %s, line %d: Unmatched bracket.\n", 132 FILENAME, FNR, $1) > stderr; 133 brackets = 0; # Reset 134 } 135 current_version = ""; 136 next; 137} 138 139 140/.*/ { 141 printf("File %s, line %d: Unknown directive: '%s'\n", 142 FILENAME, FNR, $0) > stderr; 143} 144 145function print_version(v) 146{ 147 # This function is recursive, so return if this version 148 # has already been printed. Otherwise, if there is an 149 # ancestral version, recursively print its symbols before 150 # printing the symbols for this version. 151 # 152 if (generated[v] == 1) 153 return; 154 if (successors[v] != "") 155 print_version(successors[v]); 156 157 printf("%s {\n", v); 158 159 # The version count is always one more that actual, 160 # so the loop ranges from 1 to n-1. 161 # 162 for (i = 1; i < versions[v]; i++) { 163 if (i == 1) 164 printf("global:\n"); 165 printf("\t%s\n", symbols[v, i]); 166 } 167 if (successors[v] == "") { 168 # This version succeeds no other version. 169 printf("local:\n"); 170 printf("\t*;\n"); 171 printf("};\n"); 172 } 173 else 174 printf("} %s;\n", successors[v]); 175 printf("\n"); 176 177 generated[v] = 1; 178 } 179END { 180 for (v in versions) { 181 print_version(v); 182 } 183} 184