| 1 | : # -*- perl -*- |
| 2 | eval 'exec $PERL_CMD -S $0 ${1+"$@"}' |
| 3 | if 0; |
| 4 | |
| 5 | use FindBin; |
| 6 | use File::Spec; |
| 7 | |
| 8 | # |
| 9 | # PAL: Perl Augmented Language. |
| 10 | # |
| 11 | |
| 12 | $VERSION= '1.13'; |
| 13 | $COMBINE_CONTINUATION= 0; #lines ended with \ printed as it is |
| 14 | |
| 15 | $prog= &basename($0); |
| 16 | ($PROG= $prog)=~ tr/a-z/A-Z/; |
| 17 | |
| 18 | $PERL = $ENV{PERL_CMD}; |
| 19 | if(not defined $PERL) { |
| 20 | $PERL= "/usr/perl5/bin/perl"; #path for perl5; site dependent |
| 21 | # warn "WARNING: BW_PERL not defined, using $PERL.\n"; |
| 22 | } |
| 23 | $BASE= "$FindBin::Bin/.."; #released path |
| 24 | $RUNTIME= "${PROG}_runtime.pl"; |
| 25 | if ($^O eq 'solaris') { |
| 26 | $INCLUDE_CMD= "$FindBin::Bin/include"; |
| 27 | } |
| 28 | if ($^O eq 'linux') { |
| 29 | $INCLUDE_CMD= "$FindBin::Bin/include.linux"; |
| 30 | } |
| 31 | $OUTPUT_DIR= "."; # default output directory |
| 32 | |
| 33 | $,= ' '; |
| 34 | $USER= $ENV{'USER'} || getlogin() || (getpwuid($<))[0] ; |
| 35 | |
| 36 | |
| 37 | @ARGV_save= @ARGV; |
| 38 | & initialize(); #may change BASE |
| 39 | |
| 40 | if(! $QUIET) { |
| 41 | # $cmd= "echo \"`date +%m/%d/%y:%H`: $prog @ARGV\" >> $BASE/Log/$USER"; |
| 42 | # $cmd.= "; chmod 660 $BASE/Log/$USER" ; |
| 43 | # system( $cmd ); |
| 44 | } |
| 45 | |
| 46 | #Run cpp on the input file to expand #includes and __LINE__. |
| 47 | #The reason we can't use the perl option that runs cpp before running perl |
| 48 | #is because after running cpp, we have to do some massaging on output file. |
| 49 | |
| 50 | ### process only '#inc' as include directive : |
| 51 | |
| 52 | if(1) { #direct pipe. |
| 53 | $cmd= "$INCLUDE_CMD -i '#inc' -pal $include_string $infile "; |
| 54 | open(PP_FILE, " $cmd |") or die "Can't open pipe from '$cmd' $!\n"; #preprocessed file as input |
| 55 | }else{ #write to a file first. |
| 56 | $cmd= "$INCLUDE_CMD -i '#inc' -pal $include_string $infile > $infile_pp"; |
| 57 | & EXIT2(1, $cmd) if( system("$cmd") ) ; |
| 58 | open(PP_FILE, "< $infile_pp") or die "Can't open '$infile_pp' $!\n"; #preprocessed file as input |
| 59 | } |
| 60 | |
| 61 | open(PL_FILE, "> $infile_pl") or die "Can't write '$infile_pl' $!\n"; #translated (perl) output |
| 62 | |
| 63 | print PL_FILE "#! $PERL \n"; #make perl code executable |
| 64 | print PL_FILE "# Translated Perl code from '$0 @ARGV_save'\n\n"; |
| 65 | |
| 66 | for($i= 0; $i< @INCLUDE; $i++) { |
| 67 | print PL_FILE "unshift(\@INC, '$INCLUDE[$i]');\n"; |
| 68 | } |
| 69 | print PL_FILE "srand($SEED);\n" if($SEED); |
| 70 | print PL_FILE "\$BASE= '$BASE';\n"; |
| 71 | print PL_FILE "use lib '$FindBin::Bin/../lib';\n"; |
| 72 | print PL_FILE "require \'$RUNTIME';\n"; |
| 73 | |
| 74 | & LINES_TO_PERL (); |
| 75 | |
| 76 | close(PP_FILE); |
| 77 | close(PL_FILE); |
| 78 | chmod(0750, $infile_pl); |
| 79 | |
| 80 | if($keep_tmpFile != 2) { |
| 81 | if ( $outputFile ) { |
| 82 | $attach= " > $outputFile" if($outputFile); |
| 83 | # Make sure current dir is writable, since we'll be generating temp files. |
| 84 | & EXIT2(1, "Output directory '$OUTPUT_DIR' must be writable") |
| 85 | if(! -w $OUTPUT_DIR); |
| 86 | } |
| 87 | # print STDERR "execute: $infile_pl @ARGV $attach \n"; |
| 88 | if( system("$PERL $infile_pl @ARGV $attach") ) { |
| 89 | &EXIT2(1, "Can't execute $infile_pl @ARGV $attach"); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | &cleanup(); |
| 94 | |
| 95 | |
| 96 | |
| 97 | ################################################################################ |
| 98 | # initialize & process cmd-line arguments |
| 99 | ################################################################################ |
| 100 | sub process_cmdline { |
| 101 | my($PERLOPTIONS) = ''; |
| 102 | my $ofile; |
| 103 | |
| 104 | while(substr($ARGV[0],0,1) eq '-' || $ARGV[0]=~ /^([A-Za-z_]\w*=)(.*)/) { |
| 105 | my($arg)= shift(@ARGV); |
| 106 | |
| 107 | # [Viranjit 11/21/03] |
| 108 | if ( $arg =~ /^(-\S+)=(.+)/ ) { # handle -<opt>=<val> |
| 109 | $arg = $1; # convert to -<opt> <val> |
| 110 | unshift @ARGV, $2; |
| 111 | } |
| 112 | |
| 113 | if( substr($arg,0,1) ne '-') { #set var from cmd-line |
| 114 | $EVAL_STR .= "\$$1$2;\n"; # process "foo= bar" |
| 115 | }elsif($arg eq '-base') { #change base to non-default place |
| 116 | $BASE= shift(@ARGV); # for experimenting new version. |
| 117 | }elsif($arg eq '-h' || $arg eq '-help') { |
| 118 | & EXIT(0); |
| 119 | }elsif($arg eq '-H' || $arg eq '-HELP') { |
| 120 | & EXIT(0); |
| 121 | # & INFO(); exit(0); |
| 122 | }elsif($arg eq '-I') { |
| 123 | @INCLUDE= (@INCLUDE, shift(@ARGV)); |
| 124 | }elsif($arg eq '-k' || $arg eq '-keep') { |
| 125 | $keep_tmpFile= 1; |
| 126 | }elsif($arg eq '-ko' || $arg eq '-keeponly') { |
| 127 | $keep_tmpFile= 2; |
| 128 | }elsif($arg eq '-o') { |
| 129 | $outputFile= shift(@ARGV); #user-given output file |
| 130 | (undef, $OUTPUT_DIR, $ofile) = |
| 131 | File::Spec->splitpath( $outputFile ); |
| 132 | $OUTPUT_DIR = "." if $OUTPUT_DIR eq ""; |
| 133 | }elsif($arg eq '-q' || $arg eq '-quiet') { |
| 134 | $QUIET= 1; |
| 135 | }elsif($arg eq '-R' || $arg eq '-REVERSE') { |
| 136 | $REVERSE= shift(@ARGV); #user-def reverse char |
| 137 | }elsif($arg eq '-r' || $arg eq '-reverse') { |
| 138 | $REVERSE= "\\\."; #default reverse char: '.' |
| 139 | }elsif($arg eq '-s' || $arg eq '-seed') { |
| 140 | $SEED= shift(@ARGV); #set random seed |
| 141 | }elsif($arg eq '-w') { |
| 142 | $PERLOPTIONS .= ' -w'; |
| 143 | }elsif($arg eq '-perl') { |
| 144 | my($newperl)= shift(@ARGV); |
| 145 | if (-x $newperl) { |
| 146 | $PERL = $newperl; |
| 147 | } |
| 148 | } |
| 149 | } |
| 150 | $PERL .= $PERLOPTIONS if ($PERLOPTIONS ne ''); |
| 151 | } |
| 152 | |
| 153 | sub EXIT2 { & EXIT(@_, 'NoUsage'); } |
| 154 | |
| 155 | sub EXIT { |
| 156 | my($errCode, $errStr, $NoUsage)= @_; |
| 157 | print STDERR "$PROG ERR (line $.): $errStr\n" if($errStr); |
| 158 | & usage() if(! $NoUsage); |
| 159 | & cleanup(); |
| 160 | exit($errCode); |
| 161 | } |
| 162 | |
| 163 | sub initialize { |
| 164 | #reset all control variables : |
| 165 | @INCLUDE= (); |
| 166 | $REVERSE= ''; #default: no reverse mode |
| 167 | |
| 168 | & EXIT(1) if($#ARGV == -1); |
| 169 | |
| 170 | & process_cmdline(); #process argv before input file |
| 171 | |
| 172 | & EXIT(0, "Missing input file") if($#ARGV < 0); |
| 173 | |
| 174 | $infile= shift(@ARGV); |
| 175 | my($name)= &basename($infile); |
| 176 | $infile_pp= "/usr/tmp/$name.$$.pp"; #after preprocess |
| 177 | $infile_pl= "/usr/tmp/$name.$$.pl"; #after xlating to perl |
| 178 | |
| 179 | ## & process_cmdline() if($#ARGV >= 0); #after input file |
| 180 | # & EXIT(1, "Cmd-Line error") if($#ARGV >= 0) ; |
| 181 | |
| 182 | # Check suffix of input file and make sure it exists. |
| 183 | if($infile !~ /\.[^\.]*(pal|pm|tg)$/i && #no .pal|.pm|.tg suffix, and |
| 184 | ! $REVERSE) { # not start w/ reverse mode |
| 185 | & EXIT2(1, "$infile must be ended with '.*(pal|pm|tg)'"); |
| 186 | } |
| 187 | & EXIT2(1, "$infile does not exist") if(! -r $infile); |
| 188 | |
| 189 | # Make sure include directories exist. |
| 190 | for($i= 0; $i < @INCLUDE; $i++) { |
| 191 | if(! -d $INCLUDE[$i]) { |
| 192 | & EXIT2(1, "Directory $INCLUDE[$i] does not exist"); |
| 193 | }else{ |
| 194 | $include_string = $include_string . " -I $INCLUDE[$i]"; |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | } |
| 199 | |
| 200 | |
| 201 | sub LINES_TO_PERL { #translate all lines to perl |
| 202 | my($REVERSE_save); |
| 203 | |
| 204 | $curr_linenum= 0; |
| 205 | $REVERSE_save= $REVERSE; |
| 206 | |
| 207 | $INIT= 1; |
| 208 | $line= ''; |
| 209 | $currLineType= ''; |
| 210 | while(<PP_FILE>) { #read input file, and do some filtering |
| 211 | if(/^# line (\d+) (.*)/) { |
| 212 | $curr_linenum= $1 - 1; # -1 because the line itself is following |
| 213 | $curr_file= $2; |
| 214 | print PL_FILE $_; |
| 215 | next; |
| 216 | }else{ |
| 217 | ++ $curr_linenum; |
| 218 | } |
| 219 | if(/^$REVERSE#+\s*(END_INIT|ENDINIT)/ && $INIT) { # put "foo=bar" after #END_INIT |
| 220 | s/^$REVERSE//; |
| 221 | print PL_FILE "$_"; |
| 222 | print PL_FILE $EVAL_STR; |
| 223 | $INIT= 0; |
| 224 | next; |
| 225 | } |
| 226 | if($line ne '') { #this is a continued line: strip its prefix |
| 227 | if( $currLineType ne &lineType($_) ) { |
| 228 | &EXIT2(1, "prefix of continued line doesn't match previous line"); |
| 229 | } |
| 230 | s/^://; |
| 231 | s/^$REVERSE// if($REVERSE ne ''); |
| 232 | } |
| 233 | if($COMBINE_CONTINUATION==1 && s/\\\s*$// ) { |
| 234 | #line ended w/ \, cat to previous line |
| 235 | $currLineType= &lineType($_) if(! $currLineType); |
| 236 | $line.= $_; |
| 237 | next; |
| 238 | }elsif($COMBINE_CONTINUATION==2 && |
| 239 | ((! /#define/) && s/\\\s*$/\n/) ) { |
| 240 | #ended w/ \, and not #define |
| 241 | $currLineType= &lineType($_) if(! $currLineType); |
| 242 | $line.= $_; |
| 243 | next; |
| 244 | } |
| 245 | |
| 246 | |
| 247 | $line.= $_; #concate w/ potential previous lines |
| 248 | $line_save= $line; |
| 249 | & line_to_perl(*line); #change :-lines to perl print stmt |
| 250 | if($line_save ne $line) { |
| 251 | $line=~ s/\n(.)/\n# line $curr_linenum $curr_file\n$1/g; |
| 252 | # print PL_FILE "# line $curr_linenum $curr_file\n" if($line =~ /\n./); |
| 253 | } |
| 254 | print PL_FILE "$line"; |
| 255 | $line= ''; #reset only after a 'line' is complete |
| 256 | $currLineType= ''; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | |
| 261 | sub lineType { |
| 262 | my($line)= @_; |
| 263 | my($prefix)= substr($line,0,1); |
| 264 | my($typ)= |
| 265 | ($prefix eq ':') && ($MODE eq 'PLAIN' || $REVERSE eq '') ? ':' : |
| 266 | ($prefix eq $REVERSE) && ($REVERSE ne '') ? $REVERSE : |
| 267 | 'x' ; |
| 268 | $typ; |
| 269 | } |
| 270 | |
| 271 | |
| 272 | # |
| 273 | # Massage the cpp output file to |
| 274 | # replace lines beginning with ":" with print statements |
| 275 | # replace single quote with backslash quote |
| 276 | # replace '\n' with '\\n' |
| 277 | # massage some of the spacing. |
| 278 | |
| 279 | sub line_to_perl { #translate 1 line to perl stmt |
| 280 | local(*line) = @_; |
| 281 | my($print_linenum)= 1; |
| 282 | my($i); |
| 283 | |
| 284 | if($MODE eq 'PLAIN') { #===> complete_as_is (plain) TEXT mode: |
| 285 | # if($line =~ s/^[ \t]*://) { #text stuff |
| 286 | if($line =~ s/^://) { #text stuff |
| 287 | $line= & PASS_AS_IS( $line ); |
| 288 | }elsif($REVERSE ne '' && $line =~ s/^$REVERSE//) { #perl stmt |
| 289 | & check_mode_switch(*line); |
| 290 | # }elsif($line =~ /^#/) { #cpp-generated stuff: pass |
| 291 | # ; # unchanged as perl comment |
| 292 | }elsif($line =~ s/^\\#/#/) { #text escaped comment: put back |
| 293 | $line= & pass_as_is( $line ) ; #plain text |
| 294 | }else{ $line= & pass_as_is( $line ) ; } #plain text |
| 295 | |
| 296 | }elsif($REVESE ne ';' && $line =~ s/^;//) { #===> complete_as_is TEXT mode: |
| 297 | ## ';' in first column: NOT even perl variable will be evaluated |
| 298 | ## Note that: perl variables still evaluated in ordinary TEXT mode |
| 299 | $line= & pass_as_is( $line ) ; |
| 300 | |
| 301 | }elsif($REVERSE eq '') { #==> PERL mode: text needs prefix w/ ':' |
| 302 | if($line =~ s/^://) { #rm text-prefix up to ':' |
| 303 | $line= & PASS_AS_IS( $line ); #text |
| 304 | }else{ |
| 305 | & check_mode_switch(*line); #perl stmt |
| 306 | } |
| 307 | }else { #==> TEXT mode: perl code prefixed w/ $REVERSE |
| 308 | if($line =~ s/^$REVERSE//) { #perl stmt: remove prefix |
| 309 | & check_mode_switch(*line); |
| 310 | |
| 311 | # }elsif($line =~ /^\s*#/) { #cpp-generated stuff: pass |
| 312 | # ; # unchanged as perl comment |
| 313 | }elsif($line =~ s/^\\#/#/) { #text escaped comment: put back |
| 314 | $line= & PASS_AS_IS( $line ) ; #AS_IS line |
| 315 | }else{ $line= & PASS_AS_IS( $line ) ; #AS_IS line |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | sub check_mode_switch { #mode-switch command: start_perl, and |
| 321 | local(*line)= @_; # start_text[(reverse_string)] |
| 322 | |
| 323 | if($line=~ /^\s*#/) { #comment at the begin: |
| 324 | ; |
| 325 | }elsif($line=~ /^\s*start_plain/) { #switch to pure text mode |
| 326 | $MODE= 'PLAIN'; |
| 327 | $line= ''; #nullify the line |
| 328 | }elsif($line=~ /^\s*start_perl/) { #switch to perl mode |
| 329 | $REVERSE_save= $REVERSE; #save prev REVERSE char |
| 330 | $REVERSE= ''; #clear REVERSE |
| 331 | $MODE= ''; |
| 332 | $line= ''; #nullify the line |
| 333 | }elsif($line=~ s/^\s*start_text//) { |
| 334 | if($line=~ s/\s*\((.*)\)//) { #switch to text mode |
| 335 | $REVERSE= "$1"; #use specified $REVERSE |
| 336 | }elsif($REVERSE_save ne '') { |
| 337 | $REVERSE= $REVERSE_save; #use prev $REVERSE |
| 338 | }else{ |
| 339 | $REVERSE= "\\\."; #use default $REVERSE |
| 340 | } |
| 341 | $line= ''; #nullify the line |
| 342 | $MODE= ''; |
| 343 | }else{ my($prefix_stmt)= & proc_SELECTION(*line); |
| 344 | $line= $prefix_stmt . $line; |
| 345 | } |
| 346 | $line; |
| 347 | } |
| 348 | |
| 349 | |
| 350 | sub pass_as_is { #COMPLETELY as is: nothing will be evaluated |
| 351 | my($line)= @_ ; |
| 352 | |
| 353 | $line =~ s/\n$//; # get rid of \n, if any. |
| 354 | $line =~ s/\\/\\\\/g; # change \ to \\; to print as \ |
| 355 | $line =~ s/'/\\'/g; # replace quote w/ 'backslash quote' |
| 356 | #$line = "print \"\\n\", \'$line\';\n"; #enclose $line w/ ': no escaped needed |
| 357 | $line = "print \'$line\', \"\\n\";\n"; #enclose $line w/ ', so no escaped needed |
| 358 | } |
| 359 | |
| 360 | |
| 361 | sub PASS_AS_IS { #everything EXCEPT PERL $ variables appear as is |
| 362 | local($line)= @_; #perl variable is evaluated to its value; |
| 363 | #so only $ need be escaped by programmer. |
| 364 | |
| 365 | $line=~ s/\n$//; # get rid of \n |
| 366 | |
| 367 | my($prefix_stmt)= & proc_SELECTION(*line, 1); |
| 368 | |
| 369 | ### only '\' and " need be escaped !! |
| 370 | $line =~ s/\\/\\\\/g; # change \ to \\ for printing as \ |
| 371 | $line =~ s/"/\\"/g; # change " to \" for printing as " |
| 372 | |
| 373 | ### preseve $ as $; so when printed, it is perl variable. |
| 374 | ### preseve \$ as \$; so when printed, it is '$' . {...}. |
| 375 | ### preseve $$ as $$; so when printed, it is process id. |
| 376 | $line =~ s/\\\\([\[\$\@\]])/\\$1/g; # put \\$ back to \$; to print as $ |
| 377 | |
| 378 | #$line = $prefix_stmt . "print \"\\n$line\";\n"; |
| 379 | $line = $prefix_stmt . "print \"$line\\n\";\n"; |
| 380 | |
| 381 | } |
| 382 | |
| 383 | #------------------- [[....]] is selection list which randomly choose element |
| 384 | #------------------- [e[...]] is enumeration list which choose elements in order |
| 385 | #------------------- [l[...]] return the number of elements in the list |
| 386 | |
| 387 | sub proc_SELECTION { #process selection list [e?[...]] |
| 388 | local(*string, $func_sub)= @_; #string is either text or perl stmt. |
| 389 | my($list, $cmd); #list is stuff within [e?[ and ]] |
| 390 | my($sel_stmt, $fun_stmt); |
| 391 | my($acc); |
| 392 | |
| 393 | $acc= ''; |
| 394 | ########## selection list replacement: |
| 395 | while( 1 ) { ###--replace next [..[..]] to a $variable |
| 396 | last if($string !~ /\[([\w ,:]*)\[([^\]]*)\]\]/) ; |
| 397 | ########### [ cmd [ .list. ] ] |
| 398 | ++ $list_idx; #GLOBAL: increment after done with it |
| 399 | $acc .= $` . "\$\{_PARAM$list_idx\}"; #become a variable |
| 400 | $string = $'; #process rest later |
| 401 | |
| 402 | $cmd= $1; |
| 403 | $list= "$2"; |
| 404 | $list=~ s/([^\\])"/$1\\"/g; # escape non-escaped " |
| 405 | $list=~ s/^"/\\"/; |
| 406 | $list=~ s/\n//g; # remove all new-line char |
| 407 | |
| 408 | my($ln)= $curr_linenum - 1; |
| 409 | ##--- $_PARAMn is delay-evaluated until the last run, where all |
| 410 | ##----- $perl variables in [[..]] list are evaluated else where. |
| 411 | $sel_stmt .= "\$_PARAM$list_idx= &proc_SEL($list_idx, \"[$list]\", \"$cmd\", \"$curr_file:$ln\");\n"; |
| 412 | } |
| 413 | |
| 414 | $string= $acc . $string; |
| 415 | $acc= ''; |
| 416 | ########## function call replacement in 'text string': |
| 417 | if( $func_sub ) { |
| 418 | while(1) { |
| 419 | last if($string !~ /(.)?\&\s*([a-zA-Z_]\w*\s*\([^\)]*\))/ ); |
| 420 | ### & ---funcName-- ( ..... ) |
| 421 | $match= $&; |
| 422 | if($1 eq '\\') { |
| 423 | $string= $'; #set before another substitute. |
| 424 | $acc .= $`; |
| 425 | $match =~ s/^.//; #un-escape \& to &. |
| 426 | $acc .= $match; |
| 427 | next; |
| 428 | } |
| 429 | ++ $func_idx; |
| 430 | $acc .= $` . "$1\$\{_RETURN$func_idx\}"; |
| 431 | $string = $'; #remaining part |
| 432 | $fun_stmt .= "\$_RETURN$func_idx= & $2;\n"; |
| 433 | } |
| 434 | } |
| 435 | # $fun_stmt=~ s/\\"/"/g; #un-escape \" |
| 436 | # $fun_stmt=~ s/\\\\/\\/g; #un-escape \\ |
| 437 | |
| 438 | $string= "$acc" . "$string"; # substitute orignal stmt |
| 439 | |
| 440 | $sel_stmt . $fun_stmt; #### return prefix stmt: proc_SEL() + func-call |
| 441 | } |
| 442 | |
| 443 | |
| 444 | ################################################################################ |
| 445 | # cleanup |
| 446 | ################################################################################ |
| 447 | sub cleanup { # remove .pp and .pl files when no -k option |
| 448 | if($keep_tmpFile) { |
| 449 | my($targ)= &basename($infile_pl); |
| 450 | $targ=~ s/$$\.//; |
| 451 | $targ= File::Spec->catfile( $OUTPUT_DIR, $targ) if $OUTPUT_DIR ne "."; |
| 452 | system("mv $infile_pl $targ"); |
| 453 | }else{ |
| 454 | unlink($infile_pp) if(-f $infile_pp); |
| 455 | unlink($infile_pl) if(-f $infile_pl); |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | |
| 460 | ################################################################################ |
| 461 | # usage and INFO |
| 462 | ################################################################################ |
| 463 | sub usage { |
| 464 | my(@version)= split(' ', $VERSION); |
| 465 | print <<EOF; |
| 466 | Usage: $prog [options] {file.$prog} [{\@ARGV for file.$prog}] |
| 467 | options: |
| 468 | {var}={expr} will set ${var} to {expr} after "^#END_INIT", before |
| 469 | which is the place to give default values. |
| 470 | -h(elp) print usage information. |
| 471 | -I <include_dir> add <include_dir> to search path for #includes. |
| 472 | -k(eep) keep temporary files after run. |
| 473 | -ko|-keeponly generate temporary files and exit. |
| 474 | -o <outfile> output assembly language to <outfile>. |
| 475 | -perl <file> Change the default perl version use to <file>. |
| 476 | -r(everse) reverse to TEXT mode by treating lines prefixed w/ '.' |
| 477 | as perl stmt, the rest are output unchanged. |
| 478 | -R '{prefix}' same as -r except perl-prefix set to {prefix}; |
| 479 | char special to regular expression need be escaped. |
| 480 | -s(eed) {number} set random number seed by calling 'srand({number})'. |
| 481 | '$PROG', Perl extended Language, is a macro language based on Perl. |
| 482 | Version: 1.00. |
| 483 | EOF |
| 484 | |
| 485 | # -H(ELP) more info about $PROG extension: reverse mode, |
| 486 | # string/number selection/enumeration, etc. |
| 487 | #end of print <<EOF; |
| 488 | } |
| 489 | |
| 490 | sub INFO { |
| 491 | print <<EOF; |
| 492 | List substitution: same as what CHAOS accepted |
| 493 | 1. [[....]]: selection; replace the whole thing with a randomly |
| 494 | selected element from the ... list. |
| 495 | 2. [e[...]]: enumeration; replace the while thing with the NEXT |
| 496 | element from the ... list. |
| 497 | 3. [l[...]]: length; replace the whole thing with the number of |
| 498 | elements of the ... list. |
| 499 | 4. Type of list: |
| 500 | a. number list: [[0, 2, 4-9, 11-13]] |
| 501 | b. string list: [[bc1f, bc1t, bc1fl, bc1tl]] |
| 502 | About MODE: perl, text, and plain-text"; |
| 503 | The original testgen is always in perl mode where all lines are perl |
| 504 | stmt by default. Only those prefixed with ':' are output as is with |
| 505 | perl variables evaluated. $PROG can switch mode bewteen perl and |
| 506 | text. In perl mode, text needs be prefixed with ':' just like in |
| 507 | testgen. In text mode, all lines are text by default. Perl stmt |
| 508 | need be started with perl-prefix, whose default is '.'. It can |
| 509 | be set to something else by using -R option. To make life more |
| 510 | versatile (or complicated :-), $PROG can switch modes on the fly. |
| 511 | Two pseudo perl functions are added for the purpose: |
| 512 | start_perl and start_text[({new_perl_prefix})] |
| 513 | Start_perl switches to perl mode and to comply with testgen, the |
| 514 | text-prefix is always ':'. Start_text switches to text mode with |
| 515 | perl-prefix set to either previous perl-prefix or {new_perl_prefix} |
| 516 | if specified. NOTE: perl-prefix is to process as regular expression. |
| 517 | Appropriate escape is needed. Here are Examples to set . and [] |
| 518 | as perl-prefix: |
| 519 | $prog -R '\\.' and $prog -R '\\[\\]' on the command line, and |
| 520 | start_text(\\.) and start_text(\\[\\]) on your .tg file. |
| 521 | In text mode, perl variables are still evaluated. To prevent that, |
| 522 | a pure text mode is added which must always be prefixed with ';' |
| 523 | if it is not used as perl_prefix. |
| 524 | Other differences in TEXT lines: |
| 525 | '\$': In testgen, '\$' if not for perl variables is escaped with \$\$; |
| 526 | in $PROG, it is escaped with more conventional \\\$. |
| 527 | '#': .tg file is first fed to cpp for macro processing. |
| 528 | So, '#' can't appear in the 1st column even in text |
| 529 | mode unless it is escaped with \\. |
| 530 | leading spaces: In testgen, spaces following ':' are replaced with |
| 531 | 1 blank; in $PROG, they survive to maintain original indent. |
| 532 | EOF |
| 533 | # end of prnt <<EOF; |
| 534 | } |
| 535 | |
| 536 | |
| 537 | sub basename { |
| 538 | my($name) = @_; |
| 539 | my( $basename ) = ""; |
| 540 | split(/\//, $name); |
| 541 | $basename = pop @_; |
| 542 | ## $basename =~ s/,.*$//; |
| 543 | return($basename); |
| 544 | } |
| 545 | |
| 546 | 1; |
| 547 | |