/**
- * oconfig - src/scanner.l
- * Copyright (C) 2007 Florian octo Forster <octo at verplant.org>
+ * collectd - src/liboconfig/scanner.l
+ * Copyright (C) 2007 Florian Forster
+ * Copyright (C) 2008 Sebastian Harl
*
- * This program 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; only version 2 of the License is applicable.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
*
- * This program 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Florian Forster <octo at collectd.org>
+ * Sebastian Harl <sh at tokkee.org>
*/
%{
#include "oconfig.h"
#include "aux_types.h"
#include "parser.h"
+
+/* multiline string buffer */
+static char *ml_buffer = NULL;
+static int ml_pos = 0;
+static int ml_len = 0;
+
+#define ml_free (ml_len - ml_pos)
+
+static void ml_append (char *);
+
+#ifdef yyterminate
+# undef yyterminate
+#endif
+#define yyterminate() \
+ do { free (ml_buffer); ml_buffer = NULL; ml_pos = 0; ml_len = 0; \
+ return YY_NULL; } while (0)
%}
%option yylineno
+%option noyywrap
+%x ML
WHITE_SPACE [\ \t\b]
-QUOTED_STRING \"([^\\"]+|\\.)*\"
+NON_WHITE_SPACE [^\ \t\b]
+EOL (\r\n|\n)
+QUOTED_STRING ([^\\"]+|\\.)*
UNQUOTED_STRING [0-9A-Za-z_]+
HEX_NUMBER 0[xX][0-9a-fA-F]+
OCT_NUMBER 0[0-7]+
BOOL_FALSE (false|no|off)
COMMENT #.*
PORT (6(5(5(3[0-5]|[0-2][0-9])|[0-4][0-9][0-9])|[0-4][0-9][0-9][0-9])|[1-5][0-9][0-9][0-9][0-9]|[1-9][0-9]?[0-9]?[0-9]?)
+
IP_BYTE (2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])
IPV4_ADDR {IP_BYTE}\.{IP_BYTE}\.{IP_BYTE}\.{IP_BYTE}(:{PORT})?
+/* IPv6 address according to http://www.ietf.org/rfc/rfc2373.txt
+ * This supports embedded IPv4 addresses as well but does not strictly check
+ * for the right prefix (::0:<v4> or ::FFFF:<v4>) because there are too many
+ * ways to correctly represent the zero bytes. It's up to the user to check
+ * for valid addresses. */
+HEX16 ([0-9A-Fa-f]{1,4})
+V6_PART ({HEX16}:{HEX16}|{IPV4_ADDR})
+IPV6_BASE ({HEX16}:){6}{V6_PART}|::({HEX16}:){5}{V6_PART}|({HEX16})?::({HEX16}:){4}{V6_PART}|(({HEX16}:){0,1}{HEX16})?::({HEX16}:){3}{V6_PART}|(({HEX16}:){0,2}{HEX16})?::({HEX16}:){2}{V6_PART}|(({HEX16}:){0,3}{HEX16})?::{HEX16}:{V6_PART}|(({HEX16}:){0,4}{HEX16})?::{V6_PART}|(({HEX16}:){0,5}{HEX16})?::{HEX16}|(({HEX16}:){0,6}{HEX16})?::
+IPV6_ADDR ({IPV6_BASE})|(\[{IPV6_BASE}\](:{PORT})?)
+
%%
{WHITE_SPACE} |
{COMMENT} {/* ignore */}
-\n {return (EOL);}
+\\{EOL} {/* continue line */}
+
+{EOL} {return (EOL);}
"/" {return (SLASH);}
"<" {return (OPENBRAC);}
">" {return (CLOSEBRAC);}
-{BOOL_TRUE} {yylval.boolean = 1; return (TRUE);}
-{BOOL_FALSE} {yylval.boolean = 0; return (FALSE);}
+{BOOL_TRUE} {yylval.boolean = 1; return (BTRUE);}
+{BOOL_FALSE} {yylval.boolean = 0; return (BFALSE);}
{IPV4_ADDR} {yylval.string = yytext; return (UNQUOTED_STRING);}
+{IPV6_ADDR} {yylval.string = yytext; return (UNQUOTED_STRING);}
{NUMBER} {yylval.number = strtod (yytext, NULL); return (NUMBER);}
-{QUOTED_STRING} {yylval.string = yytext; return (QUOTED_STRING);}
+\"{QUOTED_STRING}\" {yylval.string = yytext; return (QUOTED_STRING);}
{UNQUOTED_STRING} {yylval.string = yytext; return (UNQUOTED_STRING);}
+
+\"{QUOTED_STRING}\\{EOL} {
+ int len = strlen (yytext);
+
+ ml_pos = 0;
+
+ /* remove "\\<EOL>" */
+ if ('\r' == yytext[len - 2])
+ len -= 3;
+ else
+ len -= 2;
+ yytext[len] = '\0';
+
+ ml_append (yytext);
+ BEGIN (ML);
+}
+<ML>^{WHITE_SPACE}+ {/* remove leading white-space */}
+<ML>{NON_WHITE_SPACE}{QUOTED_STRING}\\{EOL} {
+ int len = strlen (yytext);
+
+ /* remove "\\<EOL>" */
+ if ('\r' == yytext[len - 2])
+ len -= 3;
+ else
+ len -= 2;
+ yytext[len] = '\0';
+
+ ml_append(yytext);
+}
+<ML>{NON_WHITE_SPACE}{QUOTED_STRING}\" {
+ ml_append(yytext);
+ yylval.string = ml_buffer;
+
+ BEGIN (INITIAL);
+ return (QUOTED_STRING);
+}
%%
+static void ml_append (char *string)
+{
+ int len = strlen (string);
+ int s;
+
+ if (ml_free <= len) {
+ ml_len += len - ml_free + 1;
+ ml_buffer = (char *)realloc (ml_buffer, ml_len);
+ if (NULL == ml_buffer)
+ YY_FATAL_ERROR ("out of dynamic memory in ml_append");
+ }
+
+ s = snprintf (ml_buffer + ml_pos, ml_free, "%s", string);
+ if ((0 > s) || (ml_free <= s))
+ YY_FATAL_ERROR ("failed to write to multiline buffer");
+
+ ml_pos += s;
+ return;
+} /* ml_append */
+
projects / collectd.git / blobdiff