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-rw-r--r--libglusterfs/src/graph.l87
1 files changed, 87 insertions, 0 deletions
diff --git a/libglusterfs/src/graph.l b/libglusterfs/src/graph.l
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index 00000000000..8d9d2dc3611
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+++ b/libglusterfs/src/graph.l
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+/*
+ Copyright (c) 2006-2009 Gluster, Inc. <http://www.gluster.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+
+%x STRING
+%option yylineno
+%option noinput
+%{
+
+#define YYSTYPE char *
+#include "xlator.h"
+#include "y.tab.h"
+#include <string.h>
+#define START_STRSIZE 32
+
+static char *text;
+static int text_asize;
+static int text_size;
+
+void append_string(const char *str, int size)
+{
+ int new_size = text_size + size + 1;
+ if (new_size > text_asize) {
+ new_size += START_STRSIZE - 1;
+ new_size &= -START_STRSIZE;
+ if (!text) {
+ text = GF_CALLOC (1, new_size,
+ gf_common_mt_char);
+ } else {
+ text = GF_REALLOC (text, new_size);
+ }
+ if (!text)
+ gf_log ("parser", GF_LOG_ERROR,
+ "out of memory");
+ text_asize = new_size;
+ }
+ 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);
+ yylval = text;
+ return STRING_TOK;
+ }
+}
+[^ \t\r\n\"\\]+ { yylval = gf_strdup (yytext) ; return ID; }
+[ \t\r\n]+ ;
+%%