X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fliboconfig%2Fscanner.l;h=b6d757eb39721fabf2c99752f8fba721fa16000a;hb=061c3c091d725d58dfe1e7525a8d72a1ea389a8a;hp=aa111a2933b7fef756ec40dd96707e9d62d7471c;hpb=cb7fed8bf0af2646dfcb32844933398c28e39be5;p=collectd.git

diff --git a/src/liboconfig/scanner.l b/src/liboconfig/scanner.l
index aa111a29..b6d757eb 100644
--- a/src/liboconfig/scanner.l
+++ b/src/liboconfig/scanner.l
@@ -1,19 +1,29 @@
 /**
- * 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>
  */
 
 %{
@@ -21,9 +31,30 @@
 #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]+
@@ -41,17 +72,75 @@ IPV4_ADDR {IP_BYTE}\.{IP_BYTE}\.{IP_BYTE}\.{IP_BYTE}(:{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);}
 
 {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 */
+