1 files changed, 111 insertions, 0 deletions
diff --git a/src/log_level.cc b/src/log_level.cc
new file mode 100644
index 0000000..e28d213
--- /dev/null
+++ b/src/log_level.cc
@@ -0,0 +1,111 @@
+/**
+ * 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 "log_level.hh"
+
+#include <ctype.h>
+
+#include "config.h"
+
+const char* level_names[LEVEL__MAX + 1] = {
+    "unknown",
+    "trace",
+    "debug5",
+    "debug4",
+    "debug3",
+    "debug2",
+    "debug",
+    "info",
+    "stats",
+    "notice",
+    "warning",
+    "error",
+    "critical",
+    "fatal",
+    "invalid",
+
+    nullptr,
+};
+
+log_level_t
+abbrev2level(const char* levelstr, ssize_t len)
+{
+    if (len == 0 || levelstr[0] == '\0') {
+        return LEVEL_UNKNOWN;
+    }
+
+    switch (toupper(levelstr[0])) {
+        case 'T':
+            return LEVEL_TRACE;
+        case 'D':
+        case 'V':
+            if (len > 1) {
+                switch (levelstr[len - 1]) {
+                    case '2':
+                        return LEVEL_DEBUG2;
+                    case '3':
+                        return LEVEL_DEBUG3;
+                    case '4':
+                        return LEVEL_DEBUG4;
+                    case '5':
+                        return LEVEL_DEBUG5;
+                }
+            }
+            return LEVEL_DEBUG;
+        case 'I':
+            if (len == 7 && toupper(levelstr[1]) == 'N'
+                && toupper(levelstr[2]) == 'V' && toupper(levelstr[3]) == 'A'
+                && toupper(levelstr[4]) == 'L' && toupper(levelstr[5]) == 'I'
+                && toupper(levelstr[6]) == 'D')
+            {
+                return LEVEL_INVALID;
+            }
+            return LEVEL_INFO;
+        case 'S':
+            return LEVEL_STATS;
+        case 'N':
+            return LEVEL_NOTICE;
+        case 'W':
+            return LEVEL_WARNING;
+        case 'E':
+            return LEVEL_ERROR;
+        case 'C':
+            return LEVEL_CRITICAL;
+        case 'F':
+            return LEVEL_FATAL;
+        default:
+            return LEVEL_UNKNOWN;
+    }
+}
+
+int
+levelcmp(const char* l1, ssize_t l1_len, const char* l2, ssize_t l2_len)
+{
+    return abbrev2level(l1, l1_len) - abbrev2level(l2, l2_len);
+}