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+#!/bin/sh
+#
+# MKlib_gen.sh -- generate sources from curses.h macro definitions
+#
+# ($Id: MKlib_gen.sh,v 1.30 2008/01/05 23:21:10 tom Exp $)
+#
+##############################################################################
+# Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. #
+# #
+# Permission is hereby granted, free of charge, to any person obtaining a #
+# copy of this software and associated documentation files (the "Software"), #
+# to deal in the Software without restriction, including without limitation #
+# the rights to use, copy, modify, merge, publish, distribute, distribute #
+# with modifications, sublicense, and/or sell copies of the Software, and to #
+# permit persons to whom the Software is furnished to do so, subject to the #
+# following conditions: #
+# #
+# The above copyright notice and this permission notice shall be included in #
+# all copies or substantial portions of the Software. #
+# #
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR #
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, #
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL #
+# THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER #
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING #
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER #
+# DEALINGS IN THE SOFTWARE. #
+# #
+# Except as contained in this notice, the name(s) of the above copyright #
+# holders shall not be used in advertising or otherwise to promote the sale, #
+# use or other dealings in this Software without prior written #
+# authorization. #
+##############################################################################
+#
+# The XSI Curses standard requires all curses entry points to exist as
+# functions, even though many definitions would normally be shadowed
+# by macros. Rather than hand-hack all that code, we actually
+# generate functions from the macros.
+#
+# This script accepts a file of prototypes on standard input. It discards
+# any that don't have a `generated' comment attached. It then parses each
+# prototype (relying on the fact that none of the macros take function
+# pointer or array arguments) and generates C source from it.
+#
+# Here is what the pipeline stages are doing:
+#
+# 1. sed: extract prototypes of generated functions
+# 2. sed: decorate prototypes with generated arguments a1. a2,...z
+# 3. awk: generate the calls with args matching the formals
+# 4. sed: prefix function names in prototypes so the preprocessor won't expand
+# them.
+# 5. cpp: macro-expand the file so the macro calls turn into C calls
+# 6. awk: strip the expansion junk off the front and add the new header
+# 7. sed: squeeze spaces, strip off gen_ prefix, create needed #undef
+#
+
+# keep the editing independent of locale:
+if test "${LANGUAGE+set}" = set; then LANGUAGE=C; export LANGUAGE; fi
+if test "${LANG+set}" = set; then LANG=C; export LANG; fi
+if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
+if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
+if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi
+if test "${LC_COLLATE+set}" = set; then LC_COLLATE=C; export LC_COLLATE; fi
+
+preprocessor="$1 -DNCURSES_INTERNALS -I../include"
+AWK="$2"
+USE="$3"
+
+PID=$$
+ED1=sed1_${PID}.sed
+ED2=sed2_${PID}.sed
+ED3=sed3_${PID}.sed
+ED4=sed4_${PID}.sed
+AW1=awk1_${PID}.awk
+AW2=awk2_${PID}.awk
+TMP=gen__${PID}.c
+trap "rm -f $ED1 $ED2 $ED3 $ED4 $AW1 $AW2 $TMP" 0 1 2 5 15
+
+ALL=$USE
+if test "$USE" = implemented ; then
+ CALL="call_"
+ cat >$ED1 <<EOF1
+/^extern.*implemented/{
+ h
+ s/^.*implemented:\([^ *]*\).*/P_POUNDCif_USE_\1_SUPPORT/p
+ g
+ s/^extern \([^;]*\);.*/\1/p
+ g
+ s/^.*implemented:\([^ *]*\).*/P_POUNDCendif/p
+}
+/^extern.*generated/{
+ h
+ s/^.*generated:\([^ *]*\).*/P_POUNDCif_USE_\1_SUPPORT/p
+ g
+ s/^extern \([^;]*\);.*/\1/p
+ g
+ s/^.*generated:\([^ *]*\).*/P_POUNDCendif/p
+}
+EOF1
+else
+ CALL=""
+ cat >$ED1 <<EOF1
+/^extern.*${ALL}/{
+ h
+ s/^.*${ALL}:\([^ *]*\).*/P_POUNDCif_USE_\1_SUPPORT/p
+ g
+ s/^extern \([^;]*\);.*/\1/p
+ g
+ s/^.*${ALL}:\([^ *]*\).*/P_POUNDCendif/p
+}
+EOF1
+fi
+
+cat >$ED2 <<EOF2
+/^P_/b nc
+/(void)/b nc
+ s/,/ a1% /
+ s/,/ a2% /
+ s/,/ a3% /
+ s/,/ a4% /
+ s/,/ a5% /
+ s/,/ a6% /
+ s/,/ a7% /
+ s/,/ a8% /
+ s/,/ a9% /
+ s/,/ a10% /
+ s/,/ a11% /
+ s/,/ a12% /
+ s/,/ a13% /
+ s/,/ a14% /
+ s/,/ a15% /
+ s/*/ * /g
+ s/%/ , /g
+ s/)/ z)/
+ s/\.\.\. z)/...)/
+:nc
+ s/(/ ( /
+ s/)/ )/
+EOF2
+
+cat >$ED3 <<EOF3
+/^P_/{
+ s/^P_POUNDCif_/#if /
+ s/^P_POUNDCendif/#endif/
+ s/^P_//
+ b done
+}
+ s/ */ /g
+ s/ */ /g
+ s/ ,/,/g
+ s/( /(/g
+ s/ )/)/g
+ s/ gen_/ /
+ s/^M_/#undef /
+ s/^[ ]*%[ ]*%[ ]*/ /
+:done
+EOF3
+
+if test "$USE" = generated ; then
+cat >$ED4 <<EOF
+ s/^\(.*\) \(.*\) (\(.*\))\$/NCURSES_EXPORT(\1) \2 (\3)/
+EOF
+else
+cat >$ED4 <<EOF
+/^\(.*\) \(.*\) (\(.*\))\$/ {
+ h
+ s/^\(.*\) \(.*\) (\(.*\))\$/extern \1 call_\2 (\3);/
+ p
+ g
+ s/^\(.*\) \(.*\) (\(.*\))\$/\1 call_\2 (\3)/
+ }
+EOF
+fi
+
+cat >$AW1 <<\EOF1
+BEGIN {
+ skip=0;
+ }
+/^P_POUNDCif/ {
+ print "\n"
+ print $0
+ skip=0;
+}
+/^P_POUNDCendif/ {
+ print $0
+ skip=1;
+}
+$0 !~ /^P_/ {
+ if (skip)
+ print "\n"
+ skip=1;
+
+ first=$1
+ for (i = 1; i <= NF; i++) {
+ if ( $i != "NCURSES_CONST" ) {
+ first = i;
+ break;
+ }
+ }
+ second = first + 1;
+ if ( $first == "chtype" ) {
+ returnType = "Char";
+ } else if ( $first == "SCREEN" ) {
+ returnType = "SP";
+ } else if ( $first == "WINDOW" ) {
+ returnType = "Win";
+ } else if ( $first == "attr_t" || $second == "attrset" || $second == "standout" || $second == "standend" || $second == "wattrset" || $second == "wstandout" || $second == "wstandend" ) {
+ returnType = "Attr";
+ } else if ( $first == "bool" || $first == "NCURSES_BOOL" ) {
+ returnType = "Bool";
+ } else if ( $second == "*" ) {
+ returnType = "Ptr";
+ } else {
+ returnType = "Code";
+ }
+ myfunc = second;
+ for (i = second; i <= NF; i++) {
+ if ($i != "*") {
+ myfunc = i;
+ break;
+ }
+ }
+ if (using == "generated") {
+ print "M_" $myfunc
+ }
+ print $0;
+ print "{";
+ argcount = 1;
+ check = NF - 1;
+ if ($check == "void")
+ argcount = 0;
+ if (argcount != 0) {
+ for (i = 1; i <= NF; i++)
+ if ($i == ",")
+ argcount++;
+ }
+
+ # suppress trace-code for functions that we cannot do properly here,
+ # since they return data.
+ dotrace = 1;
+ if ($myfunc ~ /innstr/)
+ dotrace = 0;
+ if ($myfunc ~ /innwstr/)
+ dotrace = 0;
+
+ # workaround functions that we do not parse properly
+ if ($myfunc ~ /ripoffline/) {
+ dotrace = 0;
+ argcount = 2;
+ }
+ if ($myfunc ~ /wunctrl/) {
+ dotrace = 0;
+ }
+
+ call = "%%T((T_CALLED(\""
+ args = ""
+ comma = ""
+ num = 0;
+ pointer = 0;
+ va_list = 0;
+ varargs = 0;
+ argtype = ""
+ for (i = myfunc; i <= NF; i++) {
+ ch = $i;
+ if ( ch == "*" )
+ pointer = 1;
+ else if ( ch == "va_list" )
+ va_list = 1;
+ else if ( ch == "..." )
+ varargs = 1;
+ else if ( ch == "char" )
+ argtype = "char";
+ else if ( ch == "int" )
+ argtype = "int";
+ else if ( ch == "short" )
+ argtype = "short";
+ else if ( ch == "chtype" )
+ argtype = "chtype";
+ else if ( ch == "attr_t" || ch == "NCURSES_ATTR_T" )
+ argtype = "attr";
+
+ if ( ch == "," || ch == ")" ) {
+ if (va_list) {
+ call = call "%s"
+ } else if (varargs) {
+ call = call "%s"
+ } else if (pointer) {
+ if ( argtype == "char" ) {
+ call = call "%s"
+ comma = comma "_nc_visbuf2(" num ","
+ pointer = 0;
+ } else
+ call = call "%p"
+ } else if (argcount != 0) {
+ if ( argtype == "int" || argtype == "short" ) {
+ call = call "%d"
+ argtype = ""
+ } else if ( argtype != "" ) {
+ call = call "%s"
+ comma = comma "_trace" argtype "2(" num ","
+ } else {
+ call = call "%#lx"
+ comma = comma "(long)"
+ }
+ }
+ if (ch == ",") {
+ args = args comma "a" ++num;
+ } else if ( argcount != 0 ) {
+ if ( va_list ) {
+ args = args comma "\"va_list\""
+ } else if ( varargs ) {
+ args = args comma "\"...\""
+ } else {
+ args = args comma "z"
+ }
+ }
+ call = call ch
+ if (pointer == 0 && argcount != 0 && argtype != "" )
+ args = args ")"
+ if (args != "")
+ comma = ", "
+ pointer = 0;
+ argtype = ""
+ }
+ if ( i == 2 || ch == "(" )
+ call = call ch
+ }
+ call = call "\")"
+ if (args != "")
+ call = call ", " args
+ call = call ")); "
+
+ if (dotrace)
+ printf "%s", call
+
+ if (match($0, "^void"))
+ call = ""
+ else if (dotrace)
+ call = sprintf("return%s( ", returnType);
+ else
+ call = "%%return ";
+
+ call = call $myfunc "(";
+ for (i = 1; i < argcount; i++) {
+ if (i != 1)
+ call = call ", ";
+ call = call "a" i;
+ }
+ if ( argcount != 0 && $check != "..." ) {
+ if (argcount != 1)
+ call = call ", ";
+ call = call "z";
+ }
+ if (!match($0, "^void"))
+ call = call ") ";
+ if (dotrace)
+ call = call ")";
+ print call ";"
+
+ if (match($0, "^void"))
+ print "%%returnVoid;"
+ print "}";
+}
+EOF1
+
+cat >$AW2 <<EOF1
+BEGIN {
+ print "/*"
+ print " * DO NOT EDIT THIS FILE BY HAND!"
+ printf " * It is generated by $0 %s.\n", "$USE"
+ if ( "$USE" == "generated" ) {
+ print " *"
+ print " * This is a file of trivial functions generated from macro"
+ print " * definitions in curses.h to satisfy the XSI Curses requirement"
+ print " * that every macro also exist as a callable function."
+ print " *"
+ print " * It will never be linked unless you call one of the entry"
+ print " * points with its normal macro definition disabled. In that"
+ print " * case, if you have no shared libraries, it will indirectly"
+ print " * pull most of the rest of the library into your link image."
+ }
+ print " */"
+ print "#define NCURSES_ATTR_T int"
+ print "#include <curses.priv.h>"
+ print ""
+ }
+/^DECLARATIONS/ {start = 1; next;}
+ {if (start) print \$0;}
+END {
+ if ( "$USE" != "generated" ) {
+ print "int main(void) { return 0; }"
+ }
+ }
+EOF1
+
+cat >$TMP <<EOF
+#include <ncurses_cfg.h>
+#undef NCURSES_NOMACROS
+#include <curses.h>
+
+DECLARATIONS
+
+EOF
+
+sed -n -f $ED1 \
+| sed -e 's/NCURSES_EXPORT(\(.*\)) \(.*\) (\(.*\))/\1 \2(\3)/' \
+| sed -f $ED2 \
+| $AWK -f $AW1 using=$USE \
+| sed \
+ -e 's/ [ ]*$//g' \
+ -e 's/^\([a-zA-Z_][a-zA-Z_]*[ *]*\)/\1 gen_/' \
+ -e 's/gen_$//' \
+ -e 's/ / /g' >>$TMP
+
+$preprocessor $TMP 2>/dev/null \
+| sed \
+ -e 's/ / /g' \
+ -e 's/^ //' \
+ -e 's/^_Bool/bool/' \
+| $AWK -f $AW2 \
+| sed -f $ED3 \
+| sed \
+ -e 's/^.*T_CALLED.*returnCode( \([a-z].*) \));/ return \1;/' \
+ -e 's/^.*T_CALLED.*returnCode( \((wmove.*) \));/ return \1;/' \
+ -e 's/gen_//' \
+| sed -f $ED4