long options, VMS tweaks

diff --git a/main.c b/main.c
index a0bf61292f50be3753d530618fff840c4bb50f93..444e5356d7e86d9c7be5e5762df5d911a39b282d 100644 (file)
--- a/main.c
+++ b/main.c
@@ -47,6 +47,10 @@ void flexinit PROTO((int, char**));
 void readin PROTO((void));
 void set_up_initial_allocations PROTO((void));
 
+#ifdef NEED_ARGV_FIXUP
+extern void argv_fixup PROTO((int *, char ***));
+#endif
+
 
 /* these globals are all defined and commented in flexdef.h */
 int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt;
@@ -116,6 +120,7 @@ static char *backing_name = "lex.bck";
 extern unsigned _stklen = 16384;
 #endif
 
+static char outfile_path[MAXLINE];
 static int outfile_created = 0;
 static char *skelname = NULL;
 
@@ -127,7 +132,10 @@ char **argv;
        int i;
 
 #ifdef THINK_C
-       argc = ccommand( &argv );
+       argc = ccommand( &argv );
+#endif
+#ifdef NEED_ARGV_FIXUP
+       argv_fixup( &argc, &argv );
 #endif
 
        flexinit( argc, argv );
@@ -247,7 +255,6 @@ void check_options()
 
                if ( ! did_outfilename )
                        {
-                       static char outfile_path[64];
                        char *suffix;
 
                        if ( C_plus_plus )
@@ -574,10 +581,19 @@ char **argv;
        /* read flags */
        for ( --argc, ++argv; argc ; --argc, ++argv )
                {
-               if ( argv[0][0] != '-' || argv[0][1] == '\0' )
+               arg = argv[0];
+
+               if ( arg[0] != '-' || arg[1] == '\0' )
                        break;
 
-               arg = argv[0];
+               if ( arg[1] == '-' )
+                       { /* --option */
+                       if ( ! strcmp( arg, "--help" ) )
+                               arg = "-h";
+
+                       else if ( ! strcmp( arg, "--version" ) )
+                               arg = "-V";
+                       }
 
                for ( i = 1; arg[i] != '\0'; ++i )
                        switch ( arg[i] )
@@ -661,6 +677,7 @@ char **argv;
                                        use_read = fullspd = true;
                                        break;
 
+                               case '?':
                                case 'h':
                                        usage();
                                        exit( 0 );
@@ -897,6 +914,21 @@ void readin()
                        outn( "#define YY_INTERACTIVE" );
                }
 
+       else
+               {
+               if ( do_stdinit )
+                       {
+                       outn( "#ifdef VMS" );
+                       outn( yy_nostdinit );
+                       outn( "#else" );
+                       outn( yy_stdinit );
+                       outn( "#endif" );
+                       }
+
+               else
+                       outn( yy_nostdinit );
+               }
+
        if ( fullspd )
                outn( "typedef const struct yy_trans_info *yy_state_type;" );
        else if ( ! C_plus_plus )
@@ -905,18 +937,6 @@ void readin()
        if ( ddebug )
                outn( "\n#define FLEX_DEBUG" );
 
-       if ( do_stdinit )
-               {
-               outn( "#ifdef VMS" );
-               outn( yy_nostdinit );
-               outn( "#else" );
-               outn( yy_stdinit );
-               outn( "#endif" );
-               }
-
-       else
-               outn( yy_nostdinit );
-
        if ( lex_compat )
                {
                outn( "#define YY_FLEX_LEX_COMPAT" );
@@ -1013,8 +1033,9 @@ void set_up_initial_allocations()
 void usage()
        {
        fprintf( stderr,
-"%s [-bcdfhilnpstvwBFILTV78+ -C[aefFmr] -Pprefix -Sskeleton] [file ...]\n",
+"%s [-bcdfhilnpstvwBFILTV78+? -C[aefFmr] -ooutput -Pprefix -Sskeleton]\n",
                program_name );
+       fprintf( stderr, "\t[--help --version] [file ...]\n" );
 
        fprintf( stderr,
                "\t-b  generate backing-up information to %s\n", backing_name );
@@ -1028,8 +1049,18 @@ void usage()
        fprintf( stderr, "\t-p  generate performance report to stderr\n" );
        fprintf( stderr,
                "\t-s  suppress default rule to ECHO unmatched text\n" );
+
+       if ( ! did_outfilename )
+               {
+               sprintf( outfile_path, outfile_template,
+                       prefix, C_plus_plus ? "cc" : "c" );
+               outfilename = outfile_path;
+               }
+
        fprintf( stderr,
-       "\t-t  write generated scanner on stdout instead of lex.yy.c\n" );
+               "\t-t  write generated scanner on stdout instead of %s\n",
+               outfilename );
+
        fprintf( stderr,
                "\t-v  write summary of scanner statistics to stderr\n" );
        fprintf( stderr, "\t-w  do not generate warnings\n" );
@@ -1044,6 +1075,7 @@ void usage()
        fprintf( stderr, "\t-7  generate 7-bit scanner\n" );
        fprintf( stderr, "\t-8  generate 8-bit scanner\n" );
        fprintf( stderr, "\t-+  generate C++ scanner class\n" );
+       fprintf( stderr, "\t-?  produce this help message\n" );
        fprintf( stderr,
        "\t-C  specify degree of table compression (default is -Cem):\n" );
        fprintf( stderr,
@@ -1059,4 +1091,6 @@ void usage()
        fprintf( stderr, "\t-o  specify output filename\n" );
        fprintf( stderr, "\t-P  specify scanner prefix other than \"yy\"\n" );
        fprintf( stderr, "\t-S  specify skeleton file\n" );
+       fprintf( stderr, "\t--help     produce this help message\n" );
+       fprintf( stderr, "\t--version  report %s version\n", program_name );
        }