1 files changed, 71 insertions, 0 deletions
diff --git a/libglusterfs/src/graph.l b/libglusterfs/src/graph.l
new file mode 100644
index 00000000000..b9d4b2b6828
--- /dev/null
+++ b/libglusterfs/src/graph.l
@@ -0,0 +1,71 @@
+/*
+   Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
+   This file is part of GlusterFS.
+
+   This file is licensed to you under your choice of the GNU Lesser
+   General Public License, version 3 or any later version (LGPLv3 or
+   later), or the GNU General Public License, version 2 (GPLv2), in all
+   cases as published by the Free Software Foundation.
+*/
+
+%x STRING
+%option yylineno
+%option noinput
+%{
+
+#define YYSTYPE char *
+#include "glusterfs/xlator.h"
+#include "y.tab.h"
+#include <string.h>
+
+static char *text;
+static int text_size;
+
+void append_string(const char *str, int size)
+{
+    int new_size = text_size + size + 1;
+    if (!text) {
+        text = GF_CALLOC (1, new_size, gf_common_mt_char);
+    } else {
+        text = GF_REALLOC (text, new_size);
+    }
+    if (!text) {
+        return;
+    }
+    memcpy(text + text_size, str, size);
+    text_size += size;
+    text[text_size] = 0;
+}
+
+%}
+
+VOLUME [v][o][l][u][m][e]
+END    [e][n][d]
+SUB    [s][u][b]
+OPTION [o][p][t][i][o][n]
+TYPE   [t][y][p][e]
+%%
+\#.*                   ;
+{VOLUME}               return VOLUME_BEGIN;
+{TYPE}                 return TYPE;
+{END}[-]{VOLUME}       return VOLUME_END;
+{SUB}{VOLUME}[Ss]      return SUBVOLUME;
+{OPTION}               return OPTION;
+\"                     BEGIN(STRING);
+<STRING>{
+       [^\n\"\\]* {    append_string (yytext, yyleng); }
+       \\.        {    append_string (yytext + 1, yyleng - 1); }
+       \"         {
+                       if (0) {
+                           yyunput (0, NULL);
+                       }
+                       BEGIN (INITIAL);
+                       graphyylval = text;
+                       text = NULL;
+                       text_size = 0;
+                       return STRING_TOK;
+                  }
+}
+[^ \t\r\n\"\\]+ {    graphyylval = gf_strdup (yytext) ; return ID; }
+[ \t\r\n]+             ;
+%%