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+%{
+/*
+ * Copyright (c) 1998 - 2001 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * 3. Neither the name of the Institute 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 BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#undef ECHO
+
+#include "make_cmds.h"
+#include "parse.h"
+
+RCSID("$Id: lex.l,v 1.6 2001/09/16 23:10:10 assar Exp $");
+
+static unsigned lineno = 1;
+static int getstring(void);
+
+#define YY_NO_UNPUT
+
+#undef ECHO
+
+%}
+
+
+%%
+command_table { return TABLE; }
+request { return REQUEST; }
+unknown { return UNKNOWN; }
+unimplemented { return UNIMPLEMENTED; }
+end { return END; }
+#[^\n]* ;
+[ \t] ;
+\n { lineno++; }
+\" { return getstring(); }
+[a-zA-Z0-9_]+ { yylval.string = strdup(yytext); return STRING; }
+. { return *yytext; }
+%%
+
+#ifndef yywrap /* XXX */
+int
+yywrap ()
+{
+ return 1;
+}
+#endif
+
+static int
+getstring(void)
+{
+ char x[128];
+ int i = 0;
+ int c;
+ int backslash = 0;
+ while((c = input()) != EOF){
+ if(backslash) {
+ if(c == 'n')
+ c = '\n';
+ else if(c == 't')
+ c = '\t';
+ x[i++] = c;
+ backslash = 0;
+ continue;
+ }
+ if(c == '\n'){
+ error_message("unterminated string");
+ lineno++;
+ break;
+ }
+ if(c == '\\'){
+ backslash++;
+ continue;
+ }
+ if(c == '\"')
+ break;
+ x[i++] = c;
+ }
+ x[i] = '\0';
+ yylval.string = strdup(x);
+ return STRING;
+}
+
+void
+error_message (const char *format, ...)
+{
+ va_list args;
+
+ va_start (args, format);
+ fprintf (stderr, "%s:%d: ", filename, lineno);
+ vfprintf (stderr, format, args);
+ va_end (args);
+ numerror++;
+}
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