mirror of
https://github.com/Aigor44/ncursesw-morphos.git
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417 lines
10 KiB
Bash
Executable File
417 lines
10 KiB
Bash
Executable File
#!/bin/sh
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#
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# MKlib_gen.sh -- generate sources from curses.h macro definitions
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#
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# ($Id: MKlib_gen.sh,v 1.24 2005/06/11 19:26:05 tom Exp $)
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#
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##############################################################################
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# Copyright (c) 1998-2004,2005 Free Software Foundation, Inc. #
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# #
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# Permission is hereby granted, free of charge, to any person obtaining a #
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# copy of this software and associated documentation files (the "Software"), #
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# to deal in the Software without restriction, including without limitation #
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# the rights to use, copy, modify, merge, publish, distribute, distribute #
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# with modifications, sublicense, and/or sell copies of the Software, and to #
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# permit persons to whom the Software is furnished to do so, subject to the #
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# following conditions: #
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# #
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# The above copyright notice and this permission notice shall be included in #
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# all copies or substantial portions of the Software. #
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# #
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR #
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, #
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL #
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# THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER #
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING #
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER #
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# DEALINGS IN THE SOFTWARE. #
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# #
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# Except as contained in this notice, the name(s) of the above copyright #
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# holders shall not be used in advertising or otherwise to promote the sale, #
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# use or other dealings in this Software without prior written #
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# authorization. #
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##############################################################################
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#
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# The XSI Curses standard requires all curses entry points to exist as
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# functions, even though many definitions would normally be shadowed
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# by macros. Rather than hand-hack all that code, we actually
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# generate functions from the macros.
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#
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# This script accepts a file of prototypes on standard input. It discards
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# any that don't have a `generated' comment attached. It then parses each
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# prototype (relying on the fact that none of the macros take function
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# pointer or array arguments) and generates C source from it.
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#
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# Here is what the pipeline stages are doing:
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#
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# 1. sed: extract prototypes of generated functions
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# 2. sed: decorate prototypes with generated arguments a1. a2,...z
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# 3. awk: generate the calls with args matching the formals
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# 4. sed: prefix function names in prototypes so the preprocessor won't expand
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# them.
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# 5. cpp: macro-expand the file so the macro calls turn into C calls
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# 6. awk: strip the expansion junk off the front and add the new header
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# 7. sed: squeeze spaces, strip off gen_ prefix, create needed #undef
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#
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# keep the editing independent of locale:
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if test "${LANGUAGE+set}" = set; then LANGUAGE=C; export LANGUAGE; fi
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if test "${LANG+set}" = set; then LANG=C; export LANG; fi
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if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
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if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
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if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi
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if test "${LC_COLLATE+set}" = set; then LC_COLLATE=C; export LC_COLLATE; fi
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preprocessor="$1 -I../include"
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AWK="$2"
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USE="$3"
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PID=$$
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ED1=sed1_${PID}.sed
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ED2=sed2_${PID}.sed
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ED3=sed3_${PID}.sed
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ED4=sed4_${PID}.sed
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AW1=awk1_${PID}.awk
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AW2=awk2_${PID}.awk
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TMP=gen__${PID}.c
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trap "rm -f $ED1 $ED2 $ED3 $ED4 $AW1 $AW2 $TMP" 0 1 2 5 15
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ALL=$USE
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if test "$USE" = implemented ; then
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CALL="call_"
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cat >$ED1 <<EOF1
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/^extern.*implemented/{
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h
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s/^.*implemented:\([^ *]*\).*/P_POUNDCif_USE_\1_SUPPORT/p
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g
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s/^extern \([^;]*\);.*/\1/p
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g
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s/^.*implemented:\([^ *]*\).*/P_POUNDCendif/p
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}
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/^extern.*generated/{
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h
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s/^.*generated:\([^ *]*\).*/P_POUNDCif_USE_\1_SUPPORT/p
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g
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s/^extern \([^;]*\);.*/\1/p
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g
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s/^.*generated:\([^ *]*\).*/P_POUNDCendif/p
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}
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EOF1
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else
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CALL=""
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cat >$ED1 <<EOF1
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/^extern.*${ALL}/{
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h
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s/^.*${ALL}:\([^ *]*\).*/P_POUNDCif_USE_\1_SUPPORT/p
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g
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s/^extern \([^;]*\);.*/\1/p
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g
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s/^.*${ALL}:\([^ *]*\).*/P_POUNDCendif/p
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}
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EOF1
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fi
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cat >$ED2 <<EOF2
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/^P_/b nc
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/(void)/b nc
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s/,/ a1% /
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s/,/ a2% /
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s/,/ a3% /
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s/,/ a4% /
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s/,/ a5% /
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s/,/ a6% /
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s/,/ a7% /
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s/,/ a8% /
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s/,/ a9% /
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s/,/ a10% /
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s/,/ a11% /
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s/,/ a12% /
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s/,/ a13% /
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s/,/ a14% /
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s/,/ a15% /
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s/*/ * /g
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s/%/ , /g
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s/)/ z)/
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s/\.\.\. z)/...)/
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:nc
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s/(/ ( /
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s/)/ )/
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EOF2
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cat >$ED3 <<EOF3
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/^P_/{
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s/^P_POUNDCif_/#if /
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s/^P_POUNDCendif/#endif/
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s/^P_//
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b done
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}
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s/ */ /g
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s/ */ /g
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s/ ,/,/g
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s/( /(/g
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s/ )/)/g
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s/ gen_/ /
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s/^M_/#undef /
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s/^[ ]*%[ ]*%[ ]*/ /
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:done
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EOF3
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if test "$USE" = generated ; then
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cat >$ED4 <<EOF
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s/^\(.*\) \(.*\) (\(.*\))\$/NCURSES_EXPORT(\1) \2 (\3)/
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EOF
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else
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cat >$ED4 <<EOF
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/^\(.*\) \(.*\) (\(.*\))\$/ {
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h
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s/^\(.*\) \(.*\) (\(.*\))\$/extern \1 call_\2 (\3);/
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p
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g
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s/^\(.*\) \(.*\) (\(.*\))\$/\1 call_\2 (\3)/
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}
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EOF
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fi
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cat >$AW1 <<\EOF1
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BEGIN {
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skip=0;
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}
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/^P_POUNDCif/ {
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print "\n"
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print $0
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skip=0;
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}
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/^P_POUNDCendif/ {
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print $0
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skip=1;
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}
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$0 !~ /^P_/ {
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if (skip)
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print "\n"
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skip=1;
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first=$1
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for (i = 1; i <= NF; i++) {
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if ( $i != "NCURSES_CONST" ) {
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first = i;
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break;
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}
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}
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second = first + 1;
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if ( $first == "chtype" ) {
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returnType = "Char";
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} else if ( $first == "SCREEN" ) {
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returnType = "SP";
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} else if ( $first == "WINDOW" ) {
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returnType = "Win";
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} else if ( $first == "attr_t" || $second == "attrset" || $second == "standout" || $second == "standend" || $second == "wattrset" || $second == "wstandout" || $second == "wstandend" ) {
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returnType = "Attr";
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} else if ( $first == "bool" || $first == "NCURSES_BOOL" ) {
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returnType = "Bool";
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} else if ( $second == "*" ) {
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returnType = "Ptr";
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} else {
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returnType = "Code";
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}
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myfunc = second;
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for (i = second; i <= NF; i++) {
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if ($i != "*") {
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myfunc = i;
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break;
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}
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}
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if (using == "generated") {
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print "M_" $myfunc
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}
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print $0;
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print "{";
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argcount = 1;
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check = NF - 1;
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if ($check == "void")
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argcount = 0;
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if (argcount != 0) {
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for (i = 1; i <= NF; i++)
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if ($i == ",")
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argcount++;
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}
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# suppress trace-code for functions that we cannot do properly here,
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# since they return data.
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dotrace = 1;
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if ($myfunc ~ /innstr/)
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dotrace = 0;
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if ($myfunc ~ /innwstr/)
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dotrace = 0;
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# workaround functions that we do not parse properly
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if ($myfunc ~ /ripoffline/) {
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dotrace = 0;
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argcount = 2;
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}
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if ($myfunc ~ /wunctrl/) {
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dotrace = 0;
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}
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call = "%%T((T_CALLED(\""
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args = ""
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comma = ""
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num = 0;
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pointer = 0;
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va_list = 0;
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varargs = 0;
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argtype = ""
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for (i = myfunc; i <= NF; i++) {
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ch = $i;
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if ( ch == "*" )
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pointer = 1;
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else if ( ch == "va_list" )
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va_list = 1;
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else if ( ch == "..." )
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varargs = 1;
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else if ( ch == "char" )
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argtype = "char";
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else if ( ch == "int" )
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argtype = "int";
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else if ( ch == "short" )
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argtype = "short";
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else if ( ch == "chtype" )
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argtype = "chtype";
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else if ( ch == "attr_t" || ch == "NCURSES_ATTR_T" )
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argtype = "attr";
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if ( ch == "," || ch == ")" ) {
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if (va_list) {
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call = call "%s"
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} else if (varargs) {
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call = call "%s"
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} else if (pointer) {
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if ( argtype == "char" ) {
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call = call "%s"
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comma = comma "_nc_visbuf2(" num ","
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pointer = 0;
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} else
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call = call "%p"
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} else if (argcount != 0) {
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if ( argtype == "int" || argtype == "short" ) {
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call = call "%d"
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argtype = ""
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} else if ( argtype != "" ) {
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call = call "%s"
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comma = comma "_trace" argtype "2(" num ","
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} else {
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call = call "%#lx"
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comma = comma "(long)"
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}
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}
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if (ch == ",") {
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args = args comma "a" ++num;
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} else if ( argcount != 0 ) {
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if ( va_list ) {
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args = args comma "\"va_list\""
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} else if ( varargs ) {
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args = args comma "\"...\""
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} else {
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args = args comma "z"
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}
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}
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call = call ch
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if (pointer == 0 && argcount != 0 && argtype != "" )
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args = args ")"
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if (args != "")
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comma = ", "
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pointer = 0;
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argtype = ""
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}
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if ( i == 2 || ch == "(" )
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call = call ch
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}
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call = call "\")"
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if (args != "")
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call = call ", " args
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call = call ")); "
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if (dotrace)
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printf "%s", call
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if (match($0, "^void"))
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call = ""
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else if (dotrace)
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call = sprintf("return%s( ", returnType);
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else
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call = "%%return ";
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call = call $myfunc "(";
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for (i = 1; i < argcount; i++) {
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if (i != 1)
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call = call ", ";
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call = call "a" i;
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}
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if ( argcount != 0 && $check != "..." ) {
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if (argcount != 1)
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call = call ", ";
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call = call "z";
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}
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if (!match($0, "^void"))
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call = call ") ";
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if (dotrace)
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call = call ")";
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print call ";"
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if (match($0, "^void"))
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print "%%returnVoid;"
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print "}";
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}
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EOF1
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cat >$AW2 <<EOF1
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BEGIN {
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print "/*"
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print " * DO NOT EDIT THIS FILE BY HAND!"
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printf " * It is generated by $0 %s.\n", "$USE"
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if ( "$USE" == "generated" ) {
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print " *"
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print " * This is a file of trivial functions generated from macro"
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print " * definitions in curses.h to satisfy the XSI Curses requirement"
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print " * that every macro also exist as a callable function."
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print " *"
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print " * It will never be linked unless you call one of the entry"
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print " * points with its normal macro definition disabled. In that"
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print " * case, if you have no shared libraries, it will indirectly"
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print " * pull most of the rest of the library into your link image."
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}
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print " */"
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print "#include <curses.priv.h>"
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print ""
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}
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/^DECLARATIONS/ {start = 1; next;}
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{if (start) print \$0;}
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END {
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if ( "$USE" != "generated" ) {
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print "int main(void) { return 0; }"
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}
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}
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EOF1
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cat >$TMP <<EOF
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#include <ncurses_cfg.h>
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#include <curses.h>
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DECLARATIONS
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EOF
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sed -n -f $ED1 \
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| sed -e 's/NCURSES_EXPORT(\(.*\)) \(.*\) (\(.*\))/\1 \2(\3)/' \
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| sed -f $ED2 \
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| $AWK -f $AW1 using=$USE \
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| sed -e 's/^\([a-z_][a-z_]*[ *]*\)/\1 gen_/' -e 's/ / /g' >>$TMP
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$preprocessor $TMP 2>/dev/null \
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| sed -e 's/ / /g' -e 's/^ //' \
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| $AWK -f $AW2 \
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| sed -f $ED3 \
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| sed \
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-e 's/^.*T_CALLED.*returnCode( \([a-z].*) \));/ return \1;/' \
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-e 's/^.*T_CALLED.*returnCode( \((wmove.*) \));/ return \1;/' \
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| sed -f $ED4
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