release/src/router/libncurses/ncurses/base/MKlib_gen.sh

   1 #!/bin/sh
   2 #
   3 # MKlib_gen.sh -- generate sources from curses.h macro definitions
   4 #
   5 # ($Id: MKlib_gen.sh,v 1.50 2015/08/07 00:48:24 tom Exp $)
   6 #
   7 ##############################################################################
   8 # Copyright (c) 1998-2014,2015 Free Software Foundation, Inc.                #
   9 #                                                                            #
  10 # Permission is hereby granted, free of charge, to any person obtaining a    #
  11 # copy of this software and associated documentation files (the "Software"), #
  12 # to deal in the Software without restriction, including without limitation  #
  13 # the rights to use, copy, modify, merge, publish, distribute, distribute    #
  14 # with modifications, sublicense, and/or sell copies of the Software, and to #
  15 # permit persons to whom the Software is furnished to do so, subject to the  #
  16 # following conditions:                                                      #
  17 #                                                                            #
  18 # The above copyright notice and this permission notice shall be included in #
  19 # all copies or substantial portions of the Software.                        #
  20 #                                                                            #
  21 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR #
  22 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   #
  23 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    #
  24 # THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER      #
  25 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING    #
  26 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER        #
  27 # DEALINGS IN THE SOFTWARE.                                                  #
  28 #                                                                            #
  29 # Except as contained in this notice, the name(s) of the above copyright     #
  30 # holders shall not be used in advertising or otherwise to promote the sale, #
  31 # use or other dealings in this Software without prior written               #
  32 # authorization.                                                             #
  33 ##############################################################################
  34 #
  35 # The XSI Curses standard requires all curses entry points to exist as
  36 # functions, even though many definitions would normally be shadowed
  37 # by macros.  Rather than hand-hack all that code, we actually
  38 # generate functions from the macros.
  39 #
  40 # This script accepts a file of prototypes on standard input.  It discards
  41 # any that don't have a `generated' comment attached. It then parses each
  42 # prototype (relying on the fact that none of the macros take function
  43 # pointer or array arguments) and generates C source from it.
  44 #
  45 # Here is what the pipeline stages are doing:
  46 #
  47 # 1. sed: extract prototypes of generated functions
  48 # 2. sed: decorate prototypes with generated arguments a1. a2,...z
  49 # 3. awk: generate the calls with args matching the formals
  50 # 4. sed: prefix function names in prototypes so the preprocessor won't expand
  51 #         them.
  52 # 5. cpp: macro-expand the file so the macro calls turn into C calls
  53 # 6. awk: strip the expansion junk off the front and add the new header
  54 # 7. sed: squeeze spaces, strip off gen_ prefix.
  55 #
  56
  57 # keep the editing independent of locale:
  58 if test "${LANGUAGE+set}"    = set; then LANGUAGE=C;    export LANGUAGE;    fi
  59 if test "${LANG+set}"        = set; then LANG=C;        export LANG;        fi
  60 if test "${LC_ALL+set}"      = set; then LC_ALL=C;      export LC_ALL;      fi
  61 if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
  62 if test "${LC_CTYPE+set}"    = set; then LC_CTYPE=C;    export LC_CTYPE;    fi
  63 if test "${LC_COLLATE+set}"  = set; then LC_COLLATE=C;  export LC_COLLATE;  fi
  64
  65 preprocessor="$1 -DNCURSES_INTERNALS -I../include"
  66 AWK="$2"
  67 USE="$3"
  68
  69 # A patch discussed here:
  70 #       https://gcc.gnu.org/ml/gcc-patches/2014-06/msg02185.html
  71 # introduces spurious #line markers into the preprocessor output.  The result
  72 # appears in gcc 5.0 and (with modification) in 5.1, making it necessary to
  73 # determine if we are using gcc, and if so, what version because the proposed
  74 # solution uses a nonstandard option.
  75 PRG=`echo "$1" | $AWK '{ sub(/^[[:space:]]*/,""); sub(/[[:space:]].*$/, ""); print; }' || exit 0`
  76 FSF=`"$PRG" --version 2>/dev/null || exit 0 | fgrep "Free Software Foundation" | head -n 1`
  77 ALL=`"$PRG" -dumpversion 2>/dev/null || exit 0`
  78 ONE=`echo "$ALL" | sed -e 's/\..*$//'`
  79 if test -n "$FSF" && test -n "$ALL" && test -n "$ONE" ; then
  80         if test $ONE -ge 5 ; then
  81                 echo ".. adding -P option to work around $PRG $ALL" >&2
  82                 preprocessor="$preprocessor -P"
  83         fi
  84 fi
  85
  86 PID=$$
  87 ED1=sed1_${PID}.sed
  88 ED2=sed2_${PID}.sed
  89 ED3=sed3_${PID}.sed
  90 ED4=sed4_${PID}.sed
  91 AW1=awk1_${PID}.awk
  92 AW2=awk2_${PID}.awk
  93 TMP=gen__${PID}.c
  94 trap "rm -f $ED1 $ED2 $ED3 $ED4 $AW1 $AW2 $TMP" 0 1 2 5 15
  95
  96 ALL=$USE
  97 if test "$USE" = implemented ; then
  98         CALL="call_"
  99         cat >$ED1 <<EOF1
 100 /^extern.*implemented/{
 101         h
 102         s/NCURSES_SP_NAME(\([^)]*\))/NCURSES_SP_NAME___\1/
 103         h
 104         s/^.*implemented:\([^   *]*\).*/P_POUNDCif_USE_\1_SUPPORT/p
 105         g
 106         s/^extern \([^;]*\);.*/\1/p
 107         g
 108         s/^.*implemented:\([^   *]*\).*/P_POUNDCendif/p
 109 }
 110 /^extern.*generated/{
 111         h
 112         s/^.*generated:\([^     *]*\).*/P_POUNDCif_USE_\1_SUPPORT/p
 113         g
 114         s/^extern \([^;]*\);.*/\1/p
 115         g
 116         s/^.*generated:\([^     *]*\).*/P_POUNDCendif/p
 117 }
 118 EOF1
 119 else
 120         CALL=""
 121         cat >$ED1 <<EOF1
 122 /^extern.*${ALL}/{
 123         h
 124         s/^.*${ALL}:\([^        *]*\).*/P_POUNDCif_USE_\1_SUPPORT/p
 125         g
 126         s/^extern \([^;]*\);.*/\1/p
 127         g
 128         s/^.*${ALL}:\([^        *]*\).*/P_POUNDCendif/p
 129 }
 130 EOF1
 131 fi
 132
 133 cat >$ED2 <<EOF2
 134 /^P_/b nc
 135 /(void)/b nc
 136         s/,/ a1% /
 137         s/,/ a2% /
 138         s/,/ a3% /
 139         s/,/ a4% /
 140         s/,/ a5% /
 141         s/,/ a6% /
 142         s/,/ a7% /
 143         s/,/ a8% /
 144         s/,/ a9% /
 145         s/,/ a10% /
 146         s/,/ a11% /
 147         s/,/ a12% /
 148         s/,/ a13% /
 149         s/,/ a14% /
 150         s/,/ a15% /
 151         s/*/ * /g
 152         s/%/ , /g
 153         s/)/ z)/
 154         s/\.\.\. z)/...)/
 155 :nc
 156         s/(/ ( /
 157         s/)/ )/
 158 EOF2
 159
 160 cat >$ED3 <<EOF3
 161 /^P_/{
 162         s/^P_POUNDCif_/#if /
 163         s/^P_POUNDCendif/#endif/
 164         s/^P_//
 165         b done
 166 }
 167         s/              */ /g
 168         s/  */ /g
 169         s/ ,/,/g
 170         s/( /(/g
 171         s/ )/)/g
 172         s/ gen_/ /
 173         s/^[    ]*@[    ]*@[    ]*/     /
 174 :done
 175 EOF3
 176
 177 if test "$USE" = generated ; then
 178 cat >$ED4 <<EOF
 179         s/^\(.*\) \(.*\) (\(.*\))\$/NCURSES_EXPORT(\1) (\2) (\3)/
 180 EOF
 181 else
 182 cat >$ED4 <<EOF
 183 /^\(.*\) \(.*\) (\(.*\))\$/ {
 184         h
 185         s/^\(.*\) \(.*\) (\(.*\))\$/extern \1 call_\2 (\3);/
 186         p
 187         g
 188         s/^\(.*\) \(.*\) (\(.*\))\$/\1 call_\2 (\3)/
 189         }
 190 s/\([^_]\)NCURSES_SP_NAME___\([a-zA-Z][a-zA-Z_]*\)/\1NCURSES_SP_NAME(\2)/g
 191 EOF
 192 fi
 193
 194 cat >$AW1 <<\EOF1
 195 BEGIN   {
 196                 skip=0;
 197         }
 198 /^P_POUNDCif/ {
 199                 print "\n"
 200                 print $0
 201                 skip=0;
 202 }
 203 /^P_POUNDCendif/ {
 204                 print $0
 205                 skip=1;
 206 }
 207 $0 !~ /^P_/ {
 208         if (skip)
 209                 print "\n"
 210         skip=1;
 211
 212         first=$1
 213         for (i = 1; i <= NF; i++) {
 214                 if ( $i != "NCURSES_CONST" ) {
 215                         first = i;
 216                         break;
 217                 }
 218         }
 219         second = first + 1;
 220         returnCast = "";
 221         if ( $first == "chtype" ) {
 222                 returnType = "Chtype";
 223         } else if ( $first == "SCREEN" ) {
 224                 returnType = "SP";
 225         } else if ( $first == "WINDOW" ) {
 226                 returnType = "Win";
 227         } else if ( $first == "attr_t" || $second == "attrset" || $second == "standout" || $second == "standend" || $second == "wattrset" || $second == "wstandout" || $second == "wstandend" ) {
 228                 returnType = "IntAttr";
 229                 returnCast = "(attr_t)";
 230         } else if ( $first == "bool" || $first == "NCURSES_BOOL" ) {
 231                 returnType = "Bool";
 232         } else if ( $second == "*" ) {
 233                 returnType = "Ptr";
 234         } else {
 235                 returnType = "Code";
 236         }
 237         myfunc = second;
 238         for (i = second; i <= NF; i++) {
 239                 if ($i != "*") {
 240                         myfunc = i;
 241                         break;
 242                 }
 243         }
 244         print $0;
 245         print "{";
 246         argcount = 1;
 247         check = NF - 1;
 248         if ($check == "void")
 249                 argcount = 0;
 250         if (argcount != 0) {
 251                 for (i = 1; i <= NF; i++)
 252                         if ($i == ",")
 253                                 argcount++;
 254         }
 255
 256         # suppress trace-code for functions that we cannot do properly here,
 257         # since they return data.
 258         dotrace = 1;
 259         if ($myfunc ~ /innstr/)
 260                 dotrace = 0;
 261         if ($myfunc ~ /innwstr/)
 262                 dotrace = 0;
 263
 264         # workaround functions that we do not parse properly
 265         if ($myfunc ~ /ripoffline/) {
 266                 dotrace = 0;
 267                 argcount = 2;
 268                 if ($myfunc ~ /NCURSES_SP_NAME/) {
 269                         argcount = 3;
 270                 }
 271         }
 272         if ($myfunc ~ /wunctrl/) {
 273                 dotrace = 0;
 274         }
 275
 276         call = "@@T((T_CALLED(\""
 277         args = ""
 278         comma = ""
 279         num = 0;
 280         pointer = 0;
 281         va_list = 0;
 282         varargs = 0;
 283         argtype = ""
 284         for (i = myfunc; i <= NF; i++) {
 285                 ch = $i;
 286                 if ( ch == "*" ) {
 287                         pointer = 1;
 288                 } else if ( ch == "va_list" ) {
 289                         va_list = 1;
 290                 } else if ( ch == "..." ) {
 291                         varargs = 1;
 292                 } else if ( ch == "char" ) {
 293                         argtype = "char";
 294                 } else if ( ch == "int" ) {
 295                         argtype = "int";
 296                 } else if ( ch == "short" ) {
 297                         argtype = "short";
 298                 } else if ( ch == "chtype" ) {
 299                         argtype = "chtype";
 300                 } else if ( ch == "attr_t" || ch == "NCURSES_ATTR_T" ) {
 301                         argtype = "attr";
 302                 }
 303
 304                 if ( ch == "," || ch == ")" ) {
 305                         argcast = "";
 306                         if (va_list) {
 307                                 call = call "%s"
 308                         } else if (varargs) {
 309                                 call = call "%s"
 310                         } else if (pointer) {
 311                                 if ( argtype == "char" ) {
 312                                         call = call "%s"
 313                                         comma = comma "_nc_visbuf2(" num ","
 314                                         pointer = 0;
 315                                 } else {
 316                                         call = call "%p"
 317                                         comma = comma "(const void *)"
 318                                 }
 319                         } else if (argcount != 0) {
 320                                 if ( argtype == "int" || argtype == "short" ) {
 321                                         call = call "%d"
 322                                         argtype = ""
 323                                 } else if ( argtype != "" ) {
 324                                         call = call "%s"
 325                                         comma = comma "_trace" argtype "2(" num ","
 326                                         if (argtype == "attr") {
 327                                                 argcast = "(chtype)";
 328                                         }
 329                                 } else {
 330                                         call = call "%#lx"
 331                                         comma = comma "(long)"
 332                                 }
 333                         }
 334                         if (ch == ",") {
 335                                 args = args comma "a" ++num;
 336                         } else if ( argcount != 0 ) {
 337                                 if ( va_list ) {
 338                                         args = args comma "\"va_list\""
 339                                 } else if ( varargs ) {
 340                                         args = args comma "\"...\""
 341                                 } else {
 342                                         args = args comma argcast "z"
 343                                 }
 344                         }
 345                         call = call ch
 346                         if (pointer == 0 && argcount != 0 && argtype != "" )
 347                                 args = args ")"
 348                         if (args != "")
 349                                 comma = ", "
 350                         pointer = 0;
 351                         argtype = ""
 352                 }
 353                 if ( i == myfunc || ch == "(" )
 354                         call = call ch
 355         }
 356         call = call "\")"
 357         if (args != "")
 358                 call = call ", " args
 359         call = call ")); "
 360
 361         if (dotrace)
 362                 printf "%s", call
 363
 364         if (match($0, "^void")) {
 365                 call = ""
 366         } else if (dotrace) {
 367                 call = sprintf("return%s( ", returnType);
 368                 if (returnCast != "") {
 369                         call = call returnCast;
 370                 }
 371         } else {
 372                 call = "@@return ";
 373         }
 374
 375         call = call $myfunc "(";
 376         for (i = 1; i < argcount; i++) {
 377                 if (i != 1)
 378                         call = call ", ";
 379                 call = call "a" i;
 380         }
 381         if ( argcount != 0 && $check != "..." ) {
 382                 if (argcount != 1)
 383                         call = call ", ";
 384                 call = call "z";
 385         }
 386         if (!match($0, "^void"))
 387                 call = call ") ";
 388         if (dotrace) {
 389                 call = call ")";
 390         }
 391         print call ";"
 392
 393         if (match($0, "^void"))
 394                 print "@@returnVoid;"
 395         print "}";
 396 }
 397 EOF1
 398
 399 cat >$AW2 <<EOF1
 400 BEGIN           {
 401                 print "/*"
 402                 print " * DO NOT EDIT THIS FILE BY HAND!"
 403                 printf " * It is generated by $0 %s.\n", "$USE"
 404                 if ( "$USE" == "generated" ) {
 405                         print " *"
 406                         print " * This is a file of trivial functions generated from macro"
 407                         print " * definitions in curses.h to satisfy the XSI Curses requirement"
 408                         print " * that every macro also exist as a callable function."
 409                         print " *"
 410                         print " * It will never be linked unless you call one of the entry"
 411                         print " * points with its normal macro definition disabled.  In that"
 412                         print " * case, if you have no shared libraries, it will indirectly"
 413                         print " * pull most of the rest of the library into your link image."
 414                 }
 415                 print " */"
 416                 print "#define NCURSES_ATTR_T int"
 417                 print "#include <ncurses_cfg.h>"
 418                 print ""
 419                 print "#undef NCURSES_NOMACROS  /* _this_ file uses macros */"
 420                 print ""
 421                 print "#include <curses.priv.h>"
 422                 print ""
 423                 print "#undef vw_scanw"
 424                 print "#undef vwscanw"
 425                 print ""
 426                 print "#undef vw_printw"
 427                 print "#undef vwprintw"
 428                 }
 429 /^DECLARATIONS/ {start = 1; next;}
 430                 {
 431                 if (start) {
 432                         if ( "$USE" == "generated" ) {
 433                                 print \$0;
 434                         } else if ( \$0 ~ /^[{}]?\$/ ) {
 435                                 print \$0;
 436                         } else if ( \$0 ~ /;/ ) {
 437                                 print \$0;
 438                         } else {
 439                                 calls[start] = \$0;
 440                                 print \$0;
 441                                 start++;
 442                         }
 443                 }
 444                 }
 445 END             {
 446                 if ( "$USE" != "generated" ) {
 447                         print "int main(void)"
 448                         print "{"
 449                         for (n = 1; n < start; ++n) {
 450                                 value = calls[n];
 451                                 if ( value !~ /P_POUNDC/ ) {
 452                                         gsub(/[[:blank:]]+/," ",value);
 453                                         sub(/^[[:alnum:]_]+ /,"",value);
 454                                         sub(/^\* /,"",value);
 455                                         gsub(/[[:alnum:]_]+ \* /,"",value);
 456                                         gsub(/ (const) /," ",value);
 457                                         gsub(/ (int|short|attr_t|chtype|wchar_t|NCURSES_BOOL|NCURSES_OUTC|NCURSES_OUTC_sp|va_list) /," ",value);
 458                                         gsub(/ void /,"",value);
 459                                         sub(/^/,"call_",value);
 460                                         gsub(/ (a[[:digit:]]|z) /, " 0 ", value);
 461                                         gsub(/ int[[:blank:]]*[(][^)]+[)][(][^)]+[)]/, "0", value);
 462                                         printf "\t%s;\n", value;
 463                                 } else {
 464                                         print value;
 465                                 }
 466                         }
 467                         print " return 0;"
 468                         print "}"
 469                 }
 470                 }
 471 EOF1
 472
 473 cat >$TMP <<EOF
 474 #include <ncurses_cfg.h>
 475 #undef NCURSES_NOMACROS
 476 #include <curses.h>
 477 #include <term.h>
 478 #include <unctrl.h>
 479
 480 DECLARATIONS
 481
 482 EOF
 483
 484 sed -n -f $ED1 \
 485 | sed -e 's/NCURSES_EXPORT(\(.*\)) \(.*\) (\(.*\))/\1 \2(\3)/' \
 486 | sed -f $ED2 \
 487 | $AWK -f $AW1 using=$USE \
 488 | sed \
 489         -e 's/ [ ]*$//g' \
 490         -e 's/^\([a-zA-Z_][a-zA-Z_]*[ *]*\)/\1 gen_/' \
 491         -e 's/gen_$//' \
 492         -e 's/  / /g' >>$TMP
 493
 494 $preprocessor $TMP 2>/dev/null \
 495 | sed \
 496         -e 's/  / /g' \
 497         -e 's/^ //' \
 498         -e 's/_Bool/NCURSES_BOOL/g' \
 499 | $AWK -f $AW2 \
 500 | sed -f $ED3 \
 501 | sed \
 502         -e 's/^.*T_CALLED.*returnCode( \([a-z].*) \));/ return \1;/' \
 503         -e 's/^.*T_CALLED.*returnCode( \((wmove.*) \));/        return \1;/' \
 504         -e 's/gen_//' \
 505         -e 's/^[        ]*#/#/' \
 506         -e '/#ident/d' \
 507         -e '/#line/d' \
 508 | sed -f $ED4