Rename project from 'Debug Module' to 'Hugin'

1 files changed, 332 insertions, 0 deletions

diff --git a/hugin.c b/hugin.c
new file mode 100644
index 0000000..70a4df1
--- /dev/null
+++ b/hugin.c
@@ -0,0 +1,332 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            debug.c
+ *
+ *  Thu Nov  1 13:38:47 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.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <time.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#ifdef WITH_DBG_MUTEX
+#include <pthread.h>
+#endif
+
+#ifdef WITH_DBG_FILTER
+#include "debug_filter.h"
+#endif
+
+#ifdef WITH_DBG_SYSLOG
+#include "debug_syslog.h"
+#endif
+
+struct dbg_config_t {
+  unsigned int flags;
+  int fd;
+  int file_fd;
+  int stdout_no_date;
+#ifdef WITH_DBG_MUTEX
+  pthread_mutex_t mutex;
+#endif
+#ifdef WITH_DBG_SYSLOG
+  const char* syslog_host;
+  int syslog_port;
+#endif
+} dbg_config = {
+  DBG_FLAG_DEFAULT, // flags
+  -1, // fd
+  -1, // file_fd
+  0, //stdout_no_date
+#ifdef WITH_DBG_MUTEX
+  {}, // mutex;
+#endif
+#ifdef WITH_DBG_SYSLOG
+  "", // syslog_host;
+  -1, // syslog_port;
+#endif
+  /* // This doesn't work in C++
+  .flags = DBG_FLAG_DEFAULT,
+  .fd = -1,
+  .file_fd = -1,
+  .stdout_no_date = 0
+  */
+}; 
+
+#ifdef WITH_DBG_MUTEX
+  pthread_mutex_t localtime_mutex;
+#endif
+
+struct tm *dbg_localtime(const time_t *timep, struct tm *result)
+{
+  struct tm *res = NULL;
+#ifdef WITH_DBG_MUTEX
+  pthread_mutex_lock(&localtime_mutex);
+#endif
+
+	if(timep && result) {
+    memcpy(result,localtime(timep),sizeof(*result)); 
+    res = result;
+  }
+
+#ifdef WITH_DBG_MUTEX
+  pthread_mutex_unlock(&localtime_mutex);
+#endif
+
+  return res;
+}
+
+
+static void dbg_mutex_init()
+{
+#ifdef WITH_DBG_MUTEX
+  if(dbg_config.flags & DBG_FLAG_USE_MUTEX) {
+    pthread_mutex_init(&dbg_config.mutex, NULL);
+  }
+
+  pthread_mutex_init(&localtime_mutex, NULL);
+#endif
+}
+
+static void dbg_mutex_lock()
+{
+#ifdef WITH_DBG_MUTEX
+  if(dbg_config.flags & DBG_FLAG_USE_MUTEX) {
+    pthread_mutex_lock(&dbg_config.mutex);
+  }
+#endif
+}
+
+static void dbg_mutex_unlock()
+{
+#ifdef WITH_DBG_MUTEX
+  if(dbg_config.flags & DBG_FLAG_USE_MUTEX) {
+    pthread_mutex_unlock(&dbg_config.mutex);
+  }
+#endif
+}
+
+static void dbg_mutex_close()
+{
+#ifdef WITH_DBG_MUTEX
+  if(dbg_config.flags & DBG_FLAG_USE_MUTEX) {
+    // Make sure we don't destroy the mutex while another thread is using it.
+    dbg_mutex_lock();
+    dbg_mutex_unlock();
+    pthread_mutex_destroy(&dbg_config.mutex);
+  }
+  
+  pthread_mutex_destroy(&localtime_mutex);
+#endif
+}
+
+dbg_status_t dbg_init(unsigned int flags, ...)
+{
+  dbg_status_t status = DBG_STATUS_OK;
+
+  dbg_config.flags = flags;
+
+  int end = 0;
+
+  va_list vl;
+  va_start(vl, flags);
+  while(!end) {
+    int option = va_arg(vl, int);
+    switch(option) {
+    case DBG_OPTION_END:
+      end = 1;
+      break;
+    case DBG_OPTION_FD:
+      dbg_config.fd = va_arg(vl, int);
+      break;
+    case DBG_OPTION_STDOUT_NO_DATE:
+      dbg_config.stdout_no_date = va_arg(vl, int);
+      break;
+    case DBG_OPTION_FILENAME:
+      if(dbg_config.flags & DBG_FLAG_OUTPUT_TO_FILE) {
+        const char *filename = (const char*)va_arg(vl, char*);
+        dbg_config.file_fd = open(filename, O_CREAT | O_RDWR, 0777);
+      }
+      break;
+#ifdef WITH_DBG_SYSLOG
+    case DBG_OPTION_SYSLOG_PORT:
+      dbg_config.syslog_port = va_arg(vl, int);
+      break;
+    case DBG_OPTION_SYSLOG_HOST:
+      dbg_config.syslog_host = (const char*)va_arg(vl, char*);
+      break;
+#endif
+#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);
+      goto err;
+    }
+  }
+
+  dbg_mutex_init();
+
+#ifdef WITH_DBG_SYSLOG
+  if(dbg_config.flags & DBG_FLAG_OUTPUT_TO_SYSLOG) {
+    dbg_syslog_init(dbg_config.syslog_host, dbg_config.syslog_port);
+  }
+#endif
+
+ err:
+  va_end(vl);
+
+  return status;
+}
+
+void dbg_close()
+{
+  if(dbg_config.flags & DBG_FLAG_OUTPUT_TO_FILE) {
+    if(dbg_config.file_fd != -1) close(dbg_config.file_fd);
+  }
+
+#ifdef WITH_DBG_SYSLOG
+  dbg_syslog_close();
+#endif
+
+  dbg_mutex_close();
+}
+
+/*
+static unsigned int gettid()
+{
+  return (unsigned int)pthread_self();
+}
+*/
+
+static int dbg_create_header(char *hdr, size_t size)
+{
+  time_t rawtime = time(NULL);
+  struct tm t;
+  dbg_localtime(&rawtime, &t);
+
+  return snprintf(hdr, size,
+                  "%d-%02d-%02d %02d:%02d:%02d",
+                  t.tm_year + 1900,
+                  t.tm_mon + 1,
+                  t.tm_mday,
+                  t.tm_hour,
+                  t.tm_min,
+                  t.tm_sec);
+}
+
+static int dbg_output_fd(int fd, const char *msg, int withdate)
+{
+  int s;
+
+  if(fd == -1) return 1;
+
+  if(withdate) {
+    char hdr[32];
+    dbg_create_header(hdr, sizeof(hdr));
+    
+    s = write(fd, hdr, strlen(hdr));
+    s = write(fd, " ", 1);
+  }
+
+  s = write(fd, msg, strlen(msg));
+  if(msg[strlen(msg) - 1] != '\n') {
+    s = write(fd, "\n", 1);
+  }
+  return 0;
+}
+
+int __debug(const char *func, const int line,
+            const enum __debug_class cl,
+            const char *ch, const char *fmt, ...)
+{
+  int result = 0;
+  int sz;
+
+  // NOTE: This must be identical to the debug_class_str in debug_filter.c
+  const char * const debug_class_str[] =
+    { "fixme", "err", "warn", "info", "debug" };
+
+  dbg_mutex_lock();
+
+#ifdef WITH_DBG_FILTER
+  if(!dbg_filter_enabled(cl, ch)) goto done;
+#endif
+
+  //
+  // Generate message
+  //
+
+  char buf[1024];
+  sz = snprintf(buf, sizeof(buf),
+                "%s:%s:%s:%d ",
+                debug_class_str[(unsigned)cl], ch, func, line);
+  va_list va;
+  va_start(va, fmt);
+  sz += vsnprintf(buf + sz, sizeof(buf) - sz, fmt, va);
+  va_end(va);
+
+  //
+  // Send message to output
+  //
+
+  if(dbg_config.flags & DBG_FLAG_OUTPUT_TO_STDOUT) {
+    dbg_output_fd(STDOUT_FILENO, buf, dbg_config.stdout_no_date == 0);
+  }
+
+  if(dbg_config.flags & DBG_FLAG_OUTPUT_TO_STDERR) {
+    dbg_output_fd(STDERR_FILENO, buf, 1);
+  }
+
+  if(dbg_config.flags & DBG_FLAG_OUTPUT_TO_FD) {
+    dbg_output_fd(dbg_config.fd, buf, 1);
+  }
+
+  if(dbg_config.flags & DBG_FLAG_OUTPUT_TO_FILE) {
+    dbg_output_fd(dbg_config.file_fd, buf, 1);
+  }
+
+#ifdef WITH_DBG_SYSLOG
+  if(dbg_config.flags & DBG_FLAG_OUTPUT_TO_SYSLOG) {
+    dbg_syslog_output(buf);
+  }
+#endif
+
+#ifdef WITH_DBG_FILTER
+done:
+#endif
+  dbg_mutex_unlock();
+
+  return result;
+}