X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Flog.c;h=bcbce64b6115e010059e1788e16070f3f367e63a;hb=9f87c6fe6552ce8b2236a07307d2f825b0e4c439;hp=55431cc1fb06e2985fcb90d2ceebb544c4d06ab6;hpb=b65c2563a8a425593f91dfcb82ede8cf53fec6cd;p=libucw.git

diff --git a/lib/log.c b/lib/log.c
index 55431cc1..bcbce64b 100644
--- a/lib/log.c
+++ b/lib/log.c
@@ -1,49 +1,87 @@
 /*
  *	Sherlock Library -- Logging
  *
- *	(c) 1997 Martin Mares, <mj@atrey.karlin.mff.cuni.cz>
+ *	(c) 1997--2001 Martin Mares <mj@ucw.cz>
+ *
+ *	This software may be freely distributed and used according to the terms
+ *	of the GNU Lesser General Public License.
  */
 
+#include "lib/lib.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <string.h>
+#include <fcntl.h>
 #include <unistd.h>
-#include <sys/time.h>
+#include <time.h>
 
-#include "lib.h"
+static char *log_progname, log_name_patt[64], log_name[64];
+static pid_t log_pid;
+static int log_params;
 
-static byte *progname = "???";
-static pid_t pid;
+void
+log_fork(void)
+{
+  log_pid = getpid();
+}
 
 static void
-logit(int level, byte *msg, va_list args)
+log_switch(struct tm *tm)
 {
-  time_t tim;
-  struct tm *tm;
+  int fd;
+  char name[64];
+
+  if (!log_name_patt[0] ||
+      log_name[0] && !log_params)
+    return;
+  strftime(name, sizeof(name), log_name_patt, tm);
+  if (!strcmp(name, log_name))
+    return;
+  strcpy(log_name, name);
+  fd = open(name, O_WRONLY | O_CREAT | O_APPEND, 0666);
+  if (fd < 0)
+    die("Unable to open log file %s: %m", name);
+  close(2);
+  dup(fd);
+  close(fd);
+}
+
+static void
+vlog(unsigned int cat, const char *msg, va_list args)
+{
+  time_t tim = time(NULL);
+  struct tm *tm = localtime(&tim);
   char buf[32];
 
-  tim = time(NULL);
-  tm = localtime(&tim);
-  strftime(buf, sizeof(buf), "%d-%m-%y %H:%M:%S", tm);
-  fprintf(stderr, "%s %s [%d] <%d> ", buf, progname, pid, level);
+  log_switch(tm);
+  strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", tm);
+  fprintf(stderr, "%c %s ", cat, buf);
+  if (log_progname)
+    {
+      if (log_pid)
+	fprintf(stderr, "[%s (%d)] ", log_progname, log_pid);
+      else
+	fprintf(stderr, "[%s] ", log_progname);
+    }
+  else
+    {
+      if (log_pid)
+	fprintf(stderr, "[%d] ", log_pid);
+    }
   vfprintf(stderr, msg, args);
   fputc('\n', stderr);
   fflush(stderr);
 }
 
 void
-log(byte *msg, ...)
+log(unsigned int cat, const char *msg, ...)
 {
-  int level = 2;
   va_list args;
 
   va_start(args, msg);
-  if (msg[0] == '<' && msg[1] >= '0' && msg[1] <= '9' && msg[2] == '>')
-	{
-	  level = msg[1] - '0';
-	  msg += 3;
-	}
-  logit(level, msg, args);
+  vlog(cat, msg, args);
   va_end(args);
 }
 
@@ -53,13 +91,28 @@ die(byte *msg, ...)
   va_list args;
 
   va_start(args, msg);
-  logit(9, msg, args);
+  vlog(L_FATAL, msg, args);
   va_end(args);
-  exit(99);
+  exit(1);
 }
 
+#ifdef DEBUG
+void
+assert_failed(char *assertion, char *file, int line)
+{
+  log(L_FATAL, "Assertion `%s' failed at %s:%d", assertion, file, line);
+  abort();
+}
+#else
+void
+assert_failed(void)
+{
+  die("Internal error: Assertion failed.");
+}
+#endif
+
 static byte *
-basename(byte *n)
+log_basename(byte *n)
 {
   byte *p = n;
 
@@ -70,8 +123,22 @@ basename(byte *n)
 }
 
 void
-initlog(byte *argv0)
+log_init(byte *argv0)
+{
+  if (argv0)
+    log_progname = log_basename(argv0);
+}
+
+void
+log_file(byte *name)
 {
-  progname = basename(argv0);
-  pid = getpid();
+  if (name)
+    {
+      time_t tim = time(NULL);
+      struct tm *tm = localtime(&tim);
+      strcpy(log_name_patt, name);
+      log_params = !!strchr(name, '%');
+      log_name[0] = 0;
+      log_switch(tm);
+    }
 }