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176 lines
5.1 KiB
Bash
176 lines
5.1 KiB
Bash
#!/bin/sh
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#
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# Copyright (C) 2003 Free Software Foundation, Inc.
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# Contributed by Neil Booth, May 2003.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2, or (at your option) any
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# later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# Usage: opts.sh moveifchange srcdir outfile.c outfile.h file1.opt [ ...]
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# Always operate in the C locale.
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LANG=C
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LANGUAGE=C
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LC_ALL=C
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export LANG LANGUAGE LC_ALL
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# Set AWK if environment has not already set it.
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AWK=${AWK-awk}
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SORT=sort # Could be /bin/sort or /usr/bin/sort
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MOVEIFCHANGE=$1; shift
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C_FILE=$1; shift
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H_FILE=$1; shift
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TMP_C_FILE=tmp-${C_FILE}
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TMP_H_FILE=tmp-${H_FILE}
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${AWK} '
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# Ignore comments and blank lines
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/^[ \t]*(;|$)/ { next }
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# Note that RS="" falls foul of gawk 3.1.2 bugs
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/^[^ \t]/ { record = $0
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do { getline tmp;
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if (!(tmp ~ "^[ \t]*(;|$)"))
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record = record "\034" tmp
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} while (tmp != "")
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print record
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}
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' "$@" | ${SORT} | ${AWK} '
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function switch_flags (flags, result)
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{
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flags = " " flags " "
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result = "0"
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for (j = 0; j < n_langs; j++) {
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regex = " " langs[j] " "
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gsub ( "\\+", "\\+", regex )
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if (flags ~ regex)
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result = result " | " macros[j]
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}
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if (flags ~ " Common ") result = result " | CL_COMMON"
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if (flags ~ " Joined ") result = result " | CL_JOINED"
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if (flags ~ " JoinedOrMissing ") \
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result = result " | CL_JOINED | CL_MISSING_OK"
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if (flags ~ " Separate ") result = result " | CL_SEPARATE"
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if (flags ~ " RejectNegative ") result = result " | CL_REJECT_NEGATIVE"
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if (flags ~ " UInteger ") result = result " | CL_UINTEGER"
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if (flags ~ " Undocumented ") result = result " | CL_UNDOCUMENTED"
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sub( "^0 \\| ", "", result )
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return result
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}
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BEGIN {
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FS = "\034"
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n_opts = 0
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n_langs = 0
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}
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# Collect the text and flags of each option into an array
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{
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if ($1 == "Language") {
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langs[n_langs] = $2
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n_langs++;
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} else {
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opts[n_opts] = $1
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flags[n_opts] = $2
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help[n_opts] = $3
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n_opts++;
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}
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}
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# Dump out an enumeration into a .h file, and an array of options into a
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# C file. Combine the flags of duplicate options.
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END {
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c_file = "'${TMP_C_FILE}'"
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h_file = "'${TMP_H_FILE}'"
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realh_file = "'${H_FILE}'"
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comma = ","
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print "/* This file is auto-generated by opts.sh. */\n" > c_file
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print "#include <intl.h>" >> c_file
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print "#include \"" realh_file "\"" >> c_file
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print "#include \"opts.h\"\n" >> c_file
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print "const char * const lang_names[] =\n{" >> c_file
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print "/* This file is auto-generated by opts.sh. */\n" > h_file
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for (i = 0; i < n_langs; i++) {
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macros[i] = "CL_" langs[i]
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gsub( "[^A-Za-z0-9_]", "X", macros[i] )
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s = substr(" ", length (macros[i]))
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print "#define " macros[i] s " (1 << " i ")" >> h_file
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print " \"" langs[i] "\"," >> c_file
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}
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print " 0\n};\n" >> c_file
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print "const unsigned int cl_options_count = N_OPTS;\n" >> c_file
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print "const struct cl_option cl_options[] =\n{" >> c_file
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print "\nenum opt_code\n{" >> h_file
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for (i = 0; i < n_opts; i++)
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back_chain[i] = "N_OPTS";
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for (i = 0; i < n_opts; i++) {
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# Combine the flags of identical switches. Switches
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# appear many times if they are handled by many front
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# ends, for example.
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while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
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flags[i + 1] = flags[i] " " flags[i + 1];
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i++;
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}
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len = length (opts[i]);
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enum = "OPT_" opts[i]
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if (opts[i] == "finline-limit=")
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enum = enum "eq"
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gsub ("[^A-Za-z0-9]", "_", enum)
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# If this switch takes joined arguments, back-chain all
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# subsequent switches to it for which it is a prefix. If
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# a later switch S is a longer prefix of a switch T, T
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# will be back-chained to S in a later iteration of this
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# for() loop, which is what we want.
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if (flags[i] ~ "Joined") {
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for (j = i + 1; j < n_opts; j++) {
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if (substr (opts[j], 1, len) != opts[i])
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break;
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back_chain[j] = enum;
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}
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}
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s = substr(" ", length (opts[i]))
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if (i + 1 == n_opts)
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comma = ""
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if (help[i] == "")
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hlp = "0"
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else
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hlp = "N_(\"" help[i] "\")";
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printf(" %s,%s/* -%s */\n", enum, s, opts[i]) >> h_file
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printf(" { \"-%s\",\n %s,\n %s, %u, %s }%s\n",
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opts[i], hlp, back_chain[i], len,
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switch_flags(flags[i]), comma) >> c_file
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}
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print " N_OPTS\n};" >> h_file
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print "};" >> c_file
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}
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'
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# Copy the newly generated files back to the correct names only if different.
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# This is to prevent a cascade of file rebuilds when not necessary.
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${MOVEIFCHANGE} ${TMP_H_FILE} ${H_FILE}
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${MOVEIFCHANGE} ${TMP_C_FILE} ${C_FILE}
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