1 files changed, 103 insertions, 0 deletions
diff --git a/src/log_level_re.re b/src/log_level_re.re
new file mode 100644
index 0000000..87c9e18
--- /dev/null
+++ b/src/log_level_re.re
@@ -0,0 +1,103 @@
+/**
+ * Copyright (c) 2018, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of Timothy Stack 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 REGENTS 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 REGENTS 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.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include "log_level.hh"
+
+log_level_t string2level(const char *levelstr, ssize_t len, bool exact)
+{
+    log_level_t retval = LEVEL_UNKNOWN;
+
+    if (len == (ssize_t)-1) {
+        len = strlen(levelstr);
+    }
+
+    if (((len == 1) || ((len > 1) && (levelstr[1] == ' '))) &&
+        (retval = abbrev2level(levelstr, 1)) != LEVEL_UNKNOWN) {
+        return retval;
+    }
+
+#   define YYCTYPE unsigned char
+#   define RET(tok) { \
+        return tok; \
+    }
+
+    const YYCTYPE *YYCURSOR = (const unsigned char *) levelstr;
+    const YYCTYPE *YYLIMIT = (const unsigned char *) levelstr + len;
+    const YYCTYPE *YYMARKER = YYCURSOR;
+    const YYCTYPE *debug_level = nullptr;
+
+#   define YYPEEK()    (YYCURSOR < YYLIMIT ? *YYCURSOR : 0)
+#   define YYSKIP()    ++YYCURSOR
+#   define YYBACKUP()  YYMARKER = YYCURSOR
+#   define YYRESTORE() YYCURSOR = YYMARKER
+#   define YYSTAGP(x)  x = YYCURSOR - 1
+
+    /*!stags:re2c format = 'const unsigned char *@@;'; */
+    loop:
+    /*!re2c
+     re2c:yyfill:enable = 0;
+     re2c:flags:input = custom;
+
+     EOF = "\x00";
+
+     EOF { RET(LEVEL_UNKNOWN); }
+     'trace' { RET(LEVEL_TRACE); }
+     'debug' [2-5]? @debug_level {
+         if (debug_level == nullptr) {
+             RET(LEVEL_DEBUG);
+         }
+         switch (*debug_level) {
+         case '2':
+             RET(LEVEL_DEBUG2);
+         case '3':
+             RET(LEVEL_DEBUG3);
+         case '4':
+             RET(LEVEL_DEBUG4);
+         case '5':
+             RET(LEVEL_DEBUG5);
+         default:
+             RET(LEVEL_DEBUG);
+         }
+     }
+     'info' { RET(LEVEL_INFO); }
+     'notice' { RET(LEVEL_NOTICE); }
+     'stats' { RET(LEVEL_STATS); }
+     'warn'|'warning' { RET(LEVEL_WARNING); }
+     'err'|'error' { RET(LEVEL_ERROR); }
+     'critical' { RET(LEVEL_CRITICAL); }
+     'severe' { RET(LEVEL_CRITICAL); }
+     'fatal' { RET(LEVEL_FATAL); }
+     * { goto loop; }
+
+     */
+}