Add filter functionality.

7 files changed, 201 insertions, 162 deletions

diff --git a/Makefile b/Makefile
index fc5b439..ef8849c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 include Makefile.files
 
 all:
-	gcc ${DEBUG_SOURCES} main.c -o debug
+	gcc ${DEBUG_SOURCES} main.c -o debug -DWITH_DBG_FILTER
 # -DWITH_DBG_MUTEX
\ No newline at end of file
diff --git a/Makefile.files b/Makefile.files
index e707d13..4781f2c 100644
--- a/Makefile.files
+++ b/Makefile.files
@@ -4,7 +4,9 @@
 #
 
 DEBUG_SOURCES = \
-	debug.c
+	debug.c \
+	debug_filter.c
 
 DEBUG_EXTRA_DIST = \
-	debug.h
\ No newline at end of file
+	debug.h \
+	debug_filter.h
\ No newline at end of file
diff --git a/debug.c b/debug.c
index 22c0000..a69e673 100644
--- a/debug.c
+++ b/debug.c
@@ -41,6 +41,10 @@
 #include <pthread.h>
 #endif
 
+#ifdef WITH_DBG_FILTER
+#include "debug_filter.h"
+#endif
+
 struct {
   unsigned int flags;
 #ifdef WITH_DBG_MUTEX
@@ -114,6 +118,11 @@ dbg_status_t dbg_init(unsigned int flags, ...)
         dbg_config.file_fd = open(filename, O_CREAT | O_RDWR, 0777);
       }
       break;
+#ifdef WITH_DBG_FILTER
+    case DBG_OPTION_FILTER:
+      dbg_filter_parse((const char*)va_arg(vl, char*));
+      break;
+#endif
     default:
       status = DBG_STATUS_UNKNOWN_OPTION;
       printf("option: %x\n", option);
@@ -138,9 +147,16 @@ void dbg_close()
   dbg_mutex_close();
 }
 
-static const char * const debug_class_str[] =
+const char * const debug_class_str[] =
   { "fixme", "err", "warn", "info", "debug" };
 
+/*
+static unsigned int gettid()
+{
+  return (unsigned int)pthread_self();
+}
+*/
+
 static int dbg_create_header(char *hdr, size_t size)
 {
   time_t rawtime = time(NULL);
@@ -178,6 +194,10 @@ int __debug(const char *func, const int line,
 
   dbg_mutex_lock();
 
+#ifdef WITH_DBG_FILTER
+  if(!dbg_filter_enabled(cl, ch)) goto done;
+#endif
+
   //
   // Generate message
   //
@@ -218,157 +238,3 @@ int __debug(const char *func, const int line,
   return result;
 }
 
-#if 0
-
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-//#include <pthread.h>
-#include <string>
-#include <time.h>
-
-//#include "mutex.h"
-
-//static Mutex mutex;
-
-static unsigned int gettid()
-{
-  return 0;//(unsigned int)pthread_self();
-}
-
-static FILE *logfp = stderr;
-
-#define NELEM(x)	(sizeof(x)/sizeof((x)[0]))
-struct __debug_channel
-{
-	char name[32];
-	unsigned flags;
-};
-
-static const char * const debug_class_str[] =
-  { "fixme", "err", "warn", "info", "debug" };
-
-#define __DEBUG_CHANNEL_MAX 256
-
-static struct __debug_channel debug_channel[__DEBUG_CHANNEL_MAX];
-static unsigned n_debug_channel = 0;
-static unsigned debug_flags = (1 << __class_err) | (1 << __class_fixme);
-
-static int __debug_enabled(const enum __debug_class cl, const char *ch)
-{
-	unsigned i;
-	for(i = 0; i < n_debug_channel; i++) {
-		if(!strcmp(ch, debug_channel[i].name)) {
-			return (debug_channel[i].flags & (1 << cl)) != 0;
-		}
-	}
-	return debug_flags & (1 << cl);
-}
-
-int __debug(const char *func, const int line,
-            const enum __debug_class cl,
-            const char *ch, const char *fmt, ...)
-{
-  time_t rawtime = time(NULL);
-  struct tm *t = localtime(&rawtime);
-
-  //  MutexAutolock m(mutex);
-	int ret = 0;
-	if(__debug_enabled(cl, ch)) {
-		if((unsigned)cl < NELEM(debug_class_str))
-			ret += fprintf(logfp, "%d-%02d-%02d %02d:%02d:%02d %u %s:%s:%s:%d ",
-                     t->tm_year + 1900,
-                     t->tm_mon + 1,
-                     t->tm_mday,
-                     t->tm_hour,
-                     t->tm_min,
-                     t->tm_sec,
-                     gettid(),
-                     debug_class_str[(unsigned)cl], ch, func, line);
-		if(fmt) {
-			va_list va;
-			va_start(va, fmt);
-			ret += vfprintf(logfp, fmt, va);
-			va_end(va);
-		}
-	}
-	if(ret){
-		fflush(logfp);
-  }
-	return ret;
-}
-
-void debug_init(FILE *fp)
-{
-  //  mutex.name = "debug";
-  //  MutexAutolock m(mutex);
-  logfp = fp;
-}
-
-/*
- * fmt := [set[,set]*]*
- * set := [+-]channel
- *     |  class[+-]channel
- *     |  [+-]all
- */
-void debug_parse(const char *fmt)
-{
-  //  MutexAutolock m(mutex);
-	char *s;
-	char *next;
-	char *opt;
-
-	if(!(s = strdup(fmt))) return;
-
-	for(opt = s; opt; opt = next) {
-		int set = 0;
-		int clr = 0;
-		unsigned i;
-		if((next = strchr(opt, ','))) *next++ = '\0';
-		char *p = opt + strcspn(opt, "+-");
-		if(!*p) p = opt;	// All chars -> a channel name
-		if(p > opt) {
-			// we have a class
-			for(i = 0; i < NELEM(debug_class_str); i++) {
-				int n = strlen(debug_class_str[i]);
-				if(n != (p - opt)) continue;
-				if(!memcmp(opt, debug_class_str[i], n)) {
-					// Found the class
-					if(*p == '+')
-						set = 1 << i;
-					else
-						clr = 1 << i;
-					break;
-				}
-			}
-			if(i == NELEM(debug_class_str)) continue;
-		} else {
-			if(*p == '-')
-				clr = ~0;
-			else
-				set = ~0;
-		}
-		if(*p == '+' || *p == '-') p++;
-		if(!*p) continue;
-		if(!strcmp("all", p)) {
-			debug_flags = (debug_flags & ~clr) | set;
-		} else {
-			if(strlen(p) >= sizeof(debug_channel[0].name)) continue;
-			for(i = 0; i < n_debug_channel; i++) {
-				if(!strcmp(p, debug_channel[i].name)) {
-					debug_channel[i].flags = (debug_channel[i].flags & ~clr) | set;
-					break;
-				}
-			}
-			if(i == n_debug_channel && n_debug_channel < __DEBUG_CHANNEL_MAX) {
-				strcpy(debug_channel[i].name, p);
-				debug_channel[i].flags = (debug_flags & ~clr) | set;
-				n_debug_channel++;
-			}
-		}
-	}
-	free(s);
-}
-
-
-#endif
diff --git a/debug.h b/debug.h
index 1241f67..5044156 100644
--- a/debug.h
+++ b/debug.h
@@ -89,8 +89,15 @@ enum DBG_OPTION {
 #endif
 
   /**
-   * 
+   * Filter option. Argument is a const char *.
+   * fmt := [set[,set]*]*
+   * set := [+-]channel
+   *     |  class[+-]channel
+   *     |  [+-]all   
    */
+#ifdef WITH_DBG_FILTER
+  DBG_OPTION_FILTER,
+#endif
 };
 
 typedef enum {
diff --git a/debug_filter.c b/debug_filter.c
new file mode 100644
index 0000000..f93b4c9
--- /dev/null
+++ b/debug_filter.c
@@ -0,0 +1,123 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            debug_filter.c
+ *
+ *  Fri Dec  7 14:24:27 CET 2012
+ *  Copyright 2012 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of Debug Module.
+ *
+ *  Debug Module 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 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Debug Module 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 Debug Module; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "debug_filter.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+#define NELEM(x)	(sizeof(x)/sizeof((x)[0]))
+struct __debug_channel
+{
+	char name[32];
+	unsigned flags;
+};
+
+#define __DEBUG_CHANNEL_MAX 256
+
+static struct __debug_channel debug_channel[__DEBUG_CHANNEL_MAX];
+static unsigned n_debug_channel = 0;
+static unsigned debug_flags = (1 << __class_err) | (1 << __class_fixme);
+
+int dbg_filter_enabled(const enum __debug_class cl, const char *ch)
+{
+	unsigned i;
+	for(i = 0; i < n_debug_channel; i++) {
+		if(!strcmp(ch, debug_channel[i].name)) {
+			return (debug_channel[i].flags & (1 << cl)) != 0;
+		}
+	}
+	return debug_flags & (1 << cl);
+}
+
+extern const char * const *debug_class_str;
+
+/*
+ * fmt := [set[,set]*]*
+ * set := [+-]channel
+ *     |  class[+-]channel
+ *     |  [+-]all
+ */
+int dbg_filter_parse(const char *filter)
+{
+	char *s;
+	char *next;
+	char *opt;
+
+	if(!(s = strdup(filter))) return 1;
+
+	for(opt = s; opt; opt = next) {
+		int set = 0;
+		int clr = 0;
+		unsigned i;
+		if((next = strchr(opt, ','))) *next++ = '\0';
+		char *p = opt + strcspn(opt, "+-");
+		if(!*p) p = opt;	// All chars -> a channel name
+		if(p > opt) {
+			// we have a class
+			for(i = 0; i < NELEM(debug_class_str); i++) {
+				int n = strlen(debug_class_str[i]);
+				if(n != (p - opt)) continue;
+				if(!memcmp(opt, debug_class_str[i], n)) {
+					// Found the class
+					if(*p == '+')
+						set = 1 << i;
+					else
+						clr = 1 << i;
+					break;
+				}
+			}
+			if(i == NELEM(debug_class_str)) continue;
+		} else {
+			if(*p == '-')
+				clr = ~0;
+			else
+				set = ~0;
+		}
+		if(*p == '+' || *p == '-') p++;
+		if(!*p) continue;
+		if(!strcmp("all", p)) {
+			debug_flags = (debug_flags & ~clr) | set;
+		} else {
+			if(strlen(p) >= sizeof(debug_channel[0].name)) continue;
+			for(i = 0; i < n_debug_channel; i++) {
+				if(!strcmp(p, debug_channel[i].name)) {
+					debug_channel[i].flags = (debug_channel[i].flags & ~clr) | set;
+					break;
+				}
+			}
+			if(i == n_debug_channel && n_debug_channel < __DEBUG_CHANNEL_MAX) {
+				strcpy(debug_channel[i].name, p);
+				debug_channel[i].flags = (debug_flags & ~clr) | set;
+				n_debug_channel++;
+			}
+		}
+	}
+	free(s);
+
+  return 0;
+}
diff --git a/debug_filter.h b/debug_filter.h
new file mode 100644
index 0000000..d312d56
--- /dev/null
+++ b/debug_filter.h
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            debug_filter.h
+ *
+ *  Fri Dec  7 14:24:27 CET 2012
+ *  Copyright 2012 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of Debug Module.
+ *
+ *  Debug Module 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 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Debug Module 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 Debug Module; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DEBUG_MODULE_DEBUG_FILTER_H__
+#define __DEBUG_MODULE_DEBUG_FILTER_H__
+
+#include "debug.h"
+
+int dbg_filter_enabled(const enum __debug_class cl, const char *ch);
+int dbg_filter_parse(const char *filter);
+
+#endif/*__DEBUG_MODULE_DEBUG_FILTER_H__*/
diff --git a/main.c b/main.c
index 8e0efca..97f6d15 100644
--- a/main.c
+++ b/main.c
@@ -42,13 +42,16 @@ int main(int argc, char *argv[])
   }
   */
   dbg_status_t status = dbg_init(//DBG_FLAG_USE_MUTEX |
-                                 DBG_FLAG_OUTPUT_TO_FILE |
+                                 //DBG_FLAG_OUTPUT_TO_FILE |
                                  //DBG_FLAG_OUTPUT_TO_FD |
-                                 //DBG_FLAG_OUTPUT_TO_STDOUT |
+                                 DBG_FLAG_OUTPUT_TO_STDOUT |
                                  //DBG_FLAG_OUTPUT_TO_STDERR |
+                                 DBG_FLAG_USE_FILTER |
                                  0,
                                  //DBG_OPTION_FD, fd,
-                                 DBG_OPTION_FILENAME, "/tmp/my2.log",
+                                 //DBG_OPTION_FILENAME, "/tmp/my2.log",
+                                 DBG_OPTION_FILTER, "-all,+foo",
+                                 
                                  DBG_OPTION_END);
 
   if(status != DBG_STATUS_OK) {
@@ -59,6 +62,8 @@ int main(int argc, char *argv[])
   INFO(example, "We are up and running");
 
   DEBUG(example, "Or are we %d?", 42);
+
+  DEBUG(foo, "Or are we %d?", 42);
   
   dbg_close();