move flex program sources into src/ directory

The *.[chly] sources are now in the src directory. This implies a
bunch of changes in Makefile.am and friends to account for the new
location. The .gitignore files are now more local to places where various object files and generated source files occur.

1 files changed, 211 insertions, 0 deletions

diff --git a/src/yylex.c b/src/yylex.c
new file mode 100644
index 0000000..f06e5e6
--- /dev/null
+++ b/src/yylex.c
@@ -0,0 +1,211 @@
+/* yylex - scanner front-end for flex */
+
+/*  Copyright (c) 1990 The Regents of the University of California. */
+/*  All rights reserved. */
+
+/*  This code is derived from software contributed to Berkeley by */
+/*  Vern Paxson. */
+
+/*  The United States Government has rights in this work pursuant */
+/*  to contract no. DE-AC03-76SF00098 between the United States */
+/*  Department of Energy and the University of California. */
+
+/*  This file is part of flex. */
+
+/*  Redistribution and use in source and binary forms, with or without */
+/*  modification, are permitted provided that the following conditions */
+/*  are met: */
+
+/*  1. Redistributions of source code must retain the above copyright */
+/*     notice, this list of conditions and the following disclaimer. */
+/*  2. Redistributions in binary form must reproduce the above copyright */
+/*     notice, this list of conditions and the following disclaimer in the */
+/*     documentation and/or other materials provided with the distribution. */
+
+/*  Neither the name of the University nor the names of its contributors */
+/*  may be used to endorse or promote products derived from this software */
+/*  without specific prior written permission. */
+
+/*  THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR */
+/*  IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED */
+/*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
+/*  PURPOSE. */
+
+#include <ctype.h>
+#include "flexdef.h"
+#include "parse.h"
+
+
+/* yylex - scan for a regular expression token */
+
+int     yylex ()
+{
+	int     toktype;
+	static int beglin = false;
+	extern char *yytext;
+
+	if (eofseen)
+		toktype = EOF;
+	else
+		toktype = flexscan ();
+
+	if (toktype == EOF || toktype == 0) {
+		eofseen = 1;
+
+		if (sectnum == 1) {
+			synerr (_("premature EOF"));
+			sectnum = 2;
+			toktype = SECTEND;
+		}
+
+		else
+			toktype = 0;
+	}
+
+	if (trace) {
+		if (beglin) {
+			fprintf (stderr, "%d\t", num_rules + 1);
+			beglin = 0;
+		}
+
+		switch (toktype) {
+		case '<':
+		case '>':
+		case '^':
+		case '$':
+		case '"':
+		case '[':
+		case ']':
+		case '{':
+		case '}':
+		case '|':
+		case '(':
+		case ')':
+		case '-':
+		case '/':
+		case '\\':
+		case '?':
+		case '.':
+		case '*':
+		case '+':
+		case ',':
+			(void) putc (toktype, stderr);
+			break;
+
+		case '\n':
+			(void) putc ('\n', stderr);
+
+			if (sectnum == 2)
+				beglin = 1;
+
+			break;
+
+		case SCDECL:
+			fputs ("%s", stderr);
+			break;
+
+		case XSCDECL:
+			fputs ("%x", stderr);
+			break;
+
+		case SECTEND:
+			fputs ("%%\n", stderr);
+
+			/* We set beglin to be true so we'll start
+			 * writing out numbers as we echo rules.
+			 * flexscan() has already assigned sectnum.
+			 */
+			if (sectnum == 2)
+				beglin = 1;
+
+			break;
+
+		case NAME:
+			fprintf (stderr, "'%s'", nmstr);
+			break;
+
+		case CHAR:
+			switch (yylval) {
+			case '<':
+			case '>':
+			case '^':
+			case '$':
+			case '"':
+			case '[':
+			case ']':
+			case '{':
+			case '}':
+			case '|':
+			case '(':
+			case ')':
+			case '-':
+			case '/':
+			case '\\':
+			case '?':
+			case '.':
+			case '*':
+			case '+':
+			case ',':
+				fprintf (stderr, "\\%c", yylval);
+				break;
+
+			default:
+				if (!isascii (yylval) || !isprint (yylval))
+					fprintf (stderr,
+						 "\\%.3o",
+						 (unsigned int) yylval);
+				else
+					(void) putc (yylval, stderr);
+				break;
+			}
+
+			break;
+
+		case NUMBER:
+			fprintf (stderr, "%d", yylval);
+			break;
+
+		case PREVCCL:
+			fprintf (stderr, "[%d]", yylval);
+			break;
+
+		case EOF_OP:
+			fprintf (stderr, "<<EOF>>");
+			break;
+
+		case OPTION_OP:
+			fprintf (stderr, "%s ", yytext);
+			break;
+
+		case OPT_OUTFILE:
+		case OPT_PREFIX:
+		case CCE_ALNUM:
+		case CCE_ALPHA:
+		case CCE_BLANK:
+		case CCE_CNTRL:
+		case CCE_DIGIT:
+		case CCE_GRAPH:
+		case CCE_LOWER:
+		case CCE_PRINT:
+		case CCE_PUNCT:
+		case CCE_SPACE:
+		case CCE_UPPER:
+		case CCE_XDIGIT:
+			fprintf (stderr, "%s", yytext);
+			break;
+
+		case 0:
+			fprintf (stderr, _("End Marker\n"));
+			break;
+
+		default:
+			fprintf (stderr,
+				 _
+				 ("*Something Weird* - tok: %d val: %d\n"),
+				 toktype, yylval);
+			break;
+		}
+	}
+
+	return toktype;
+}