1# Copyright (C) 2003,2004 Free Software Foundation, Inc. 2# Contributed by Kelley Cook, June 2004. 3# Original code from Neil Booth, May 2003. 4# 5# This program is free software; you can redistribute it and/or modify it 6# under the terms of the GNU General Public License as published by the 7# Free Software Foundation; either version 2, or (at your option) any 8# later version. 9# 10# This program is distributed in the hope that it will be useful, 11# but WITHOUT ANY WARRANTY; without even the implied warranty of 12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13# GNU General Public License for more details. 14# 15# You should have received a copy of the GNU General Public License 16# along with this program; if not, write to the Free Software 17# Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 18 19# This Awk script reads in the option records generated from 20# opt-gather.awk, combines the flags of duplicat options and generates a 21# C file. 22# 23# This program uses functions from opt-functions.awk 24# 25# Usage: awk -f opt-functions.awk -f optc-gen.awk \ 26# [-v header_name=header.h] < inputfile > options.c 27 28BEGIN { 29 n_opts = 0 30 n_langs = 0 31 quote = "\042" 32 comma = "," 33 FS=SUBSEP 34 # Default the name of header created from opth-gen.awk to options.h 35 if (header_name == "") header_name="options.h" 36} 37 38# Collect the text and flags of each option into an array 39 { 40 if ($1 == "Language") { 41 langs[n_langs] = $2 42 n_langs++; 43 } 44 else { 45 name = opt_args("Mask", $1) 46 if (name == "") { 47 opts[n_opts] = $1 48 flags[n_opts] = $2 49 help[n_opts] = $3 50 n_opts++; 51 } 52 } 53 } 54 55# Dump that array of options into a C file. 56END { 57print "/* This file is auto-generated by opts.sh. */" 58print "" 59n_headers = split(header_name, headers, " ") 60for (i = 1; i <= n_headers; i++) 61 print "#include " quote headers[i] quote 62print "#include " quote "opts.h" quote 63print "#include " quote "intl.h" quote 64print "" 65 66for (i = 0; i < n_opts; i++) { 67 name = var_name(flags[i]); 68 if (name == "") 69 continue; 70 71 if (flag_set_p("VarExists", flags[i])) 72 continue; 73 74 init = opt_args("Init", flags[i]) 75 if (init != "") 76 init = " = " init; 77 else if (name in var_seen) 78 continue; 79 80 print "/* Set by -" opts[i] "." 81 print " " help[i] " */" 82 print var_type(flags[i]) name init ";" 83 print "" 84 85 var_seen[name] = 1; 86} 87 88print "" 89print "/* Local state variables. */" 90for (i = 0; i < n_opts; i++) { 91 name = static_var(opts[i], flags[i]); 92 if (name != "") 93 print "static " var_type(flags[i]) name ";" 94} 95print "" 96 97print "const char * const lang_names[] =\n{" 98for (i = 0; i < n_langs; i++) { 99 macros[i] = "CL_" langs[i] 100 gsub( "[^A-Za-z0-9_]", "X", macros[i] ) 101 s = substr(" ", length (macros[i])) 102 print " " quote langs[i] quote "," 103 } 104 105print " 0\n};\n" 106print "const unsigned int cl_options_count = N_OPTS;\n" 107 108print "const struct cl_option cl_options[] =\n{" 109 110for (i = 0; i < n_opts; i++) 111 back_chain[i] = "N_OPTS"; 112 113for (i = 0; i < n_opts; i++) { 114 # Combine the flags of identical switches. Switches 115 # appear many times if they are handled by many front 116 # ends, for example. 117 while( i + 1 != n_opts && opts[i] == opts[i + 1] ) { 118 flags[i + 1] = flags[i] " " flags[i + 1]; 119 i++; 120 } 121 122 len = length (opts[i]); 123 enum = "OPT_" opts[i] 124 if (opts[i] == "finline-limit=") 125 enum = enum "eq" 126 gsub ("[^A-Za-z0-9]", "_", enum) 127 128 # If this switch takes joined arguments, back-chain all 129 # subsequent switches to it for which it is a prefix. If 130 # a later switch S is a longer prefix of a switch T, T 131 # will be back-chained to S in a later iteration of this 132 # for() loop, which is what we want. 133 if (flag_set_p("Joined.*", flags[i])) { 134 for (j = i + 1; j < n_opts; j++) { 135 if (substr (opts[j], 1, len) != opts[i]) 136 break; 137 back_chain[j] = enum; 138 } 139 } 140 141 s = substr(" ", length (opts[i])) 142 if (i + 1 == n_opts) 143 comma = "" 144 145 if (help[i] == "") 146 hlp = "0" 147 else 148 hlp = quote help[i] quote; 149 150 printf(" { %c-%s%c,\n %s,\n %s, %u,\n", 151 quote, opts[i], quote, hlp, back_chain[i], len) 152 condition = opt_args("Condition", flags[i]) 153 cl_flags = switch_flags(flags[i]) 154 if (condition != "") 155 printf("#if %s\n" \ 156 " %s,\n" \ 157 "#else\n" \ 158 " CL_DISABLED,\n" \ 159 "#endif\n", 160 condition, cl_flags, cl_flags) 161 else 162 printf(" %s,\n", cl_flags) 163 printf(" %s, %s }%s\n", var_ref(opts[i], flags[i]), 164 var_set(flags[i]), comma) 165} 166 167print "};" 168} 169