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Diffstat (limited to 'ncurses/base/MKlib_gen.sh')
| -rwxr-xr-x | ncurses/base/MKlib_gen.sh | 426 |
1 files changed, 426 insertions, 0 deletions
diff --git a/ncurses/base/MKlib_gen.sh b/ncurses/base/MKlib_gen.sh new file mode 100755 index 0000000..0985783 --- /dev/null +++ b/ncurses/base/MKlib_gen.sh @@ -0,0 +1,426 @@ +#!/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 |
