X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=blobdiff_plain;f=src%2Flibgame%2Fmisc.c;h=8a1a011e267a89bf40e6b3c24a2d06bcb24238ba;hp=31adce34c6a1eec5f5ace6f68870628128e45b20;hb=5e13b105ad48e61a5cd46941c61a16ad00445248;hpb=14d7691c65ca4a466ce9b9448153e8fbe8351a81

diff --git a/src/libgame/misc.c b/src/libgame/misc.c
index 31adce34..8a1a011e 100644
--- a/src/libgame/misc.c
+++ b/src/libgame/misc.c
@@ -38,93 +38,150 @@
 /* ========================================================================= */
 
 /* ------------------------------------------------------------------------- */
-/* platform independent wrappers for printf() et al. (newline aware)         */
+/* logging functions                                                         */
 /* ------------------------------------------------------------------------- */
 
+#define DUPLICATE_LOG_OUT_TO_STDOUT		TRUE
+#define DUPLICATE_LOG_ERR_TO_STDERR		TRUE
+
+
 #if defined(PLATFORM_ANDROID)
 static int android_log_prio = ANDROID_LOG_INFO;
-#endif
+static char *android_log_buffer = NULL;
 
-#if 0
-static void vfPrintLog(FILE *stream, char *format, va_list ap)
+static void append_to_android_log_buffer(char *format, va_list ap)
 {
-}
+  char text_new[MAX_OUTPUT_LINESIZE];
 
-static void vfPrintLog(FILE *stream, char *format, va_list ap)
-{
+  // print text to temporary string
+  vsnprintf(text_new, MAX_OUTPUT_LINESIZE, format, ap);
+
+  if (android_log_buffer == NULL)
+  {
+    android_log_buffer = getStringCopy(text_new);
+  }
+  else
+  {
+    char *android_log_buffer_old = android_log_buffer;
+
+    // append new text to existing text
+    android_log_buffer = getStringCat2(android_log_buffer, text_new);
+
+    checked_free(android_log_buffer_old);
+  }
 }
 
-static void fPrintLog(FILE *stream, char *format, va_list ap)
+static void vprintf_log_nonewline(char *format, va_list ap)
 {
+  // add log output to buffer until text with newline is printed
+  append_to_android_log_buffer(format, ap);
 }
 
-static void fPrintLog(FILE *stream, char *format, va_list ap)
+static void vprintf_log(char *format, va_list ap)
 {
+  // add log output to buffer
+  append_to_android_log_buffer(format, ap);
+
+  // __android_log_vprint(android_log_prio, program.program_title, format, ap);
+  __android_log_write(android_log_prio, program.program_title,
+		      android_log_buffer);
+
+  checked_free(android_log_buffer);
+  android_log_buffer = NULL;
 }
-#endif
 
-static void vfprintf_nonewline(FILE *stream, char *format, va_list ap)
-{
-#if defined(PLATFORM_ANDROID)
-  // (prefix text of logging output is currently skipped on Android)
-  //__android_log_vprint(android_log_prio, program.program_title, format, ap);
 #else
-  va_list ap2;
-  va_copy(ap2, ap);
 
-  vfprintf(stream, format, ap);
-  vfprintf(stderr, format, ap2);
+static void vprintf_log_nonewline(char *format, va_list ap)
+{
+  FILE *file = program.log_file[LOG_ERR_ID];
+
+#if DUPLICATE_LOG_ERR_TO_STDERR
+  if (file != program.log_file_default[LOG_ERR_ID])
+  {
+    va_list ap2;
+    va_copy(ap2, ap);
 
-  va_end(ap2);
+    vfprintf(program.log_file_default[LOG_ERR_ID], format, ap2);
+
+    va_end(ap2);
+  }
 #endif
+
+  vfprintf(file, format, ap);
 }
 
-static void vfprintf_newline(FILE *stream, char *format, va_list ap)
+static void vprintf_log(char *format, va_list ap)
 {
-#if defined(PLATFORM_ANDROID)
-  __android_log_vprint(android_log_prio, program.program_title, format, ap);
-#else
+  FILE *file = program.log_file[LOG_ERR_ID];
   char *newline = STRING_NEWLINE;
 
-  va_list ap2;
-  va_copy(ap2, ap);
-
-  vfprintf(stream, format, ap);
-  fprintf(stream, "%s", newline);
+#if DUPLICATE_LOG_ERR_TO_STDERR
+  if (file != program.log_file_default[LOG_ERR_ID])
+  {
+    va_list ap2;
+    va_copy(ap2, ap);
 
-  vfprintf(stderr, format, ap2);
-  fprintf(stderr, "%s", newline);
+    vfprintf(program.log_file_default[LOG_ERR_ID], format, ap2);
+    fprintf(program.log_file_default[LOG_ERR_ID], "%s", newline);
 
-  va_end(ap2);
+    va_end(ap2);
+  }
 #endif
+
+  vfprintf(file, format, ap);
+  fprintf(file, "%s", newline);
 }
+#endif
 
-static void fprintf_nonewline(FILE *stream, char *format, ...)
+static void printf_log_nonewline(char *format, ...)
 {
   va_list ap;
 
   va_start(ap, format);
-  vfprintf_nonewline(stream, format, ap);
+  vprintf_log_nonewline(format, ap);
   va_end(ap);
 }
 
-static void fprintf_newline(FILE *stream, char *format, ...)
+static void printf_log(char *format, ...)
 {
   va_list ap;
 
   va_start(ap, format);
-  vfprintf_newline(stream, format, ap);
+  vprintf_log(format, ap);
   va_end(ap);
 }
 
-void fprintf_line(FILE *stream, char *line_chars, int line_length)
+static void printf_log_line(char *line_chars, int line_length)
+{
+  int i;
+
+  for (i = 0; i < line_length; i++)
+    printf_log_nonewline("%s", line_chars);
+
+  printf_log("");
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* platform independent wrappers for printf() et al.                         */
+/* ------------------------------------------------------------------------- */
+
+void fprintf_line(FILE *file, char *line_chars, int line_length)
 {
   int i;
 
   for (i = 0; i < line_length; i++)
-    fprintf_nonewline(stream, "%s", line_chars);
+    fprintf(file, "%s", line_chars);
 
-  fprintf_newline(stream, "");
+  fprintf(file, "\n");
+}
+
+void fprintf_line_with_prefix(FILE *file, char *prefix, char *line_chars,
+			      int line_length)
+{
+  fprintf(file, "%s", prefix);
+  fprintf_line(file, line_chars, line_length);
 }
 
 void printf_line(char *line_chars, int line_length)
@@ -134,8 +191,51 @@ void printf_line(char *line_chars, int line_length)
 
 void printf_line_with_prefix(char *prefix, char *line_chars, int line_length)
 {
-  fprintf(stdout, "%s", prefix);
-  fprintf_line(stdout, line_chars, line_length);
+  fprintf_line_with_prefix(stdout, prefix, line_chars, line_length);
+}
+
+static void vPrint(char *format, va_list ap)
+{
+  FILE *file = program.log_file[LOG_OUT_ID];
+
+#if DUPLICATE_LOG_OUT_TO_STDOUT
+  if (file != program.log_file_default[LOG_OUT_ID])
+  {
+    va_list ap2;
+    va_copy(ap2, ap);
+
+    vfprintf(program.log_file_default[LOG_OUT_ID], format, ap2);
+
+    va_end(ap2);
+  }
+#endif
+
+  vfprintf(file, format, ap);
+}
+
+void Print(char *format, ...)
+{
+  va_list ap;
+
+  va_start(ap, format);
+  vPrint(format, ap);
+  va_end(ap);
+}
+
+void PrintLine(char *line_chars, int line_length)
+{
+  int i;
+
+  for (i = 0; i < line_length; i++)
+    Print(line_chars);
+
+  Print("\n");
+}
+
+void PrintLineWithPrefix(char *prefix, char *line_chars, int line_length)
+{
+  Print(prefix);
+  PrintLine(line_chars, line_length);
 }
 
 
@@ -262,7 +362,7 @@ static void sleep_milliseconds(unsigned int milliseconds_delay)
   if (do_busy_waiting)
   {
     /* we want to wait only a few ms -- if we assume that we have a
-       kernel timer resolution of 10 ms, we would wait far to long;
+       kernel timer resolution of 10 ms, we would wait far too long;
        therefore it's better to do a short interval of busy waiting
        to get our sleeping time more accurate */
 
@@ -311,9 +411,10 @@ boolean DelayReached(unsigned int *counter_var,
   return TRUE;
 }
 
-void WaitUntilDelayReached(unsigned int *counter_var, unsigned int delay)
+int WaitUntilDelayReached(unsigned int *counter_var, unsigned int delay)
 {
   unsigned int actual_counter;
+  int skip_frames = 0;
 
   while (1)
   {
@@ -326,7 +427,55 @@ void WaitUntilDelayReached(unsigned int *counter_var, unsigned int delay)
       break;
   }
 
+  if (*counter_var != 0 &&
+      delay != 0 &&
+      actual_counter >= *counter_var + delay)
+  {
+    int lag = actual_counter - (*counter_var + delay);
+    int delay2 = (delay + 1) / 2;
+
+    if (lag >= delay2)
+      skip_frames = (lag + delay2) / delay;
+  }
+
   *counter_var = actual_counter;
+
+  return skip_frames;
+}
+
+void SkipUntilDelayReached(unsigned int *counter_var, unsigned int delay,
+			   int *loop_var, int last_loop_value)
+{
+  int skip_frames = WaitUntilDelayReached(counter_var, delay);
+
+#if 0
+#if DEBUG
+  printf("::: %d: %d ms", *loop_var, delay);
+  if (skip_frames)
+    printf(" -> SKIP %d FRAME(S) [%d ms]", skip_frames, skip_frames * delay);
+  printf("\n");
+#endif
+#endif
+
+  if (skip_frames == 0)
+    return;
+
+  // when skipping frames, make sure to never skip the last frame, as
+  // this may be needed for animations to reach a defined end state;
+  // furthermore, we assume that this function is called at the end
+  // of a "for" loop, which continues by incrementing the loop variable
+  // by one before checking the loop condition again; therefore we have
+  // to check against the last loop value minus one here
+
+  last_loop_value--;
+
+  if (*loop_var < last_loop_value)	// never skip the last frame
+  {
+    *loop_var += skip_frames;
+
+    if (*loop_var > last_loop_value)	// never skip the last frame
+      *loop_var = last_loop_value;
+  }
 }
 
 
@@ -505,6 +654,23 @@ char *getBaseName(char *filename)
   return getStringCopy(getBaseNamePtr(filename));
 }
 
+char *getBaseNameNoSuffix(char *filename)
+{
+  char *basename = getStringCopy(getBaseNamePtr(filename));
+
+  // remove trailing suffix (separated by dot or hyphen)
+  if (basename[0] != '.' && basename[0] != '-')
+  {
+    if (strchr(basename, '.') != NULL)
+      *strchr(basename, '.') = '\0';
+
+    if (strchr(basename, '-') != NULL)
+      *strchr(basename, '-') = '\0';
+  }
+
+  return basename;
+}
+
 char *getBasePath(char *filename)
 {
   char *basepath = getStringCopy(filename);
@@ -555,6 +721,9 @@ static char *getProgramMainDataPath()
 
 char *getStringCat2WithSeparator(char *s1, char *s2, char *sep)
 {
+  if (s1 == NULL || s2 == NULL || sep == NULL)
+    return NULL;
+
   char *complete_string = checked_malloc(strlen(s1) + strlen(sep) +
 					 strlen(s2) + 1);
 
@@ -565,6 +734,9 @@ char *getStringCat2WithSeparator(char *s1, char *s2, char *sep)
 
 char *getStringCat3WithSeparator(char *s1, char *s2, char *s3, char *sep)
 {
+  if (s1 == NULL || s2 == NULL || s3 == NULL || sep == NULL)
+    return NULL;
+
   char *complete_string = checked_malloc(strlen(s1) + strlen(sep) +
 					 strlen(s2) + strlen(sep) +
 					 strlen(s3) + 1);
@@ -587,9 +759,11 @@ char *getStringCat3(char *s1, char *s2, char *s3)
 char *getPath2(char *path1, char *path2)
 {
 #if defined(PLATFORM_ANDROID)
-  // workaround for reading from APK assets directory -- skip leading "./"
+  // workaround for reading from assets directory -- skip "." subdirs in path
   if (strEqual(path1, "."))
     return getStringCopy(path2);
+  else if (strEqual(path2, "."))
+    return getStringCopy(path1);
 #endif
 
   return getStringCat2WithSeparator(path1, path2, STRING_PATH_SEPARATOR);
@@ -598,14 +772,60 @@ char *getPath2(char *path1, char *path2)
 char *getPath3(char *path1, char *path2, char *path3)
 {
 #if defined(PLATFORM_ANDROID)
-  // workaround for reading from APK assets directory -- skip leading "./"
+  // workaround for reading from assets directory -- skip "." subdirs in path
   if (strEqual(path1, "."))
     return getStringCat2WithSeparator(path2, path3, STRING_PATH_SEPARATOR);
+  else if (strEqual(path2, "."))
+    return getStringCat2WithSeparator(path1, path3, STRING_PATH_SEPARATOR);
+  else if (strEqual(path3, "."))
+    return getStringCat2WithSeparator(path1, path2, STRING_PATH_SEPARATOR);
 #endif
 
   return getStringCat3WithSeparator(path1, path2, path3, STRING_PATH_SEPARATOR);
 }
 
+char *getImg2(char *path1, char *path2)
+{
+  char *filename = getPath2(path1, path2);
+
+  if (!fileExists(filename) && strSuffix(path2, ".png"))
+  {
+    // backward compatibility: if PNG file not found, check for PCX file
+    char *path2pcx = getStringCopy(path2);
+
+    strcpy(&path2pcx[strlen(path2pcx) - 3], "pcx");
+
+    free(filename);
+
+    filename = getPath2(path1, path2pcx);
+
+    free(path2pcx);
+  }
+
+  return filename;
+}
+
+char *getImg3(char *path1, char *path2, char *path3)
+{
+  char *filename = getPath3(path1, path2, path3);
+
+  if (!fileExists(filename) && strSuffix(path3, ".png"))
+  {
+    // backward compatibility: if PNG file not found, check for PCX file
+    char *path3pcx = getStringCopy(path3);
+
+    strcpy(&path3pcx[strlen(path3pcx) - 3], "pcx");
+
+    free(filename);
+
+    filename = getPath3(path1, path2, path3pcx);
+
+    free(path3pcx);
+  }
+
+  return filename;
+}
+
 char *getStringCopy(const char *s)
 {
   char *s_copy;
@@ -722,13 +942,18 @@ boolean strSuffixLower(char *s, char *suffix)
 /* command line option handling functions                                    */
 /* ------------------------------------------------------------------------- */
 
-void GetOptions(char *argv[],
+void GetOptions(int argc, char *argv[],
 		void (*print_usage_function)(void),
 		void (*print_version_function)(void))
 {
   char *ro_base_path = RO_BASE_PATH;
   char *rw_base_path = RW_BASE_PATH;
-  char **options_left = &argv[1];
+  char **argvplus = checked_calloc((argc + 1) * sizeof(char **));
+  char **options_left = &argvplus[1];
+
+  /* replace original "argv" with null-terminated array of string pointers */
+  while (argc--)
+    argvplus[argc] = argv[argc];
 
   /* if the program is configured to start from current directory (default),
      determine program package directory from program binary (some versions
@@ -914,6 +1139,12 @@ void GetOptions(char *argv[],
       /* when doing batch processing, always enable verbose mode (warnings) */
       options.verbose = TRUE;
     }
+#if defined(PLATFORM_MACOSX)
+    else if (strPrefix(option, "-psn"))
+    {
+      /* ignore process serial number when launched via GUI on Mac OS X */
+    }
+#endif
     else if (*option == '-')
     {
       Error(ERR_EXIT_HELP, "unrecognized option '%s'", option_str);
@@ -964,6 +1195,9 @@ void Error(int mode, char *format, ...)
   static boolean last_line_was_separator = FALSE;
   char *process_name = "";
 
+  if (program.log_file[LOG_ERR_ID] == NULL)
+    return;
+
 #if defined(PLATFORM_ANDROID)
   android_log_prio = (mode & ERR_DEBUG ? ANDROID_LOG_DEBUG :
 		      mode & ERR_INFO ? ANDROID_LOG_INFO :
@@ -979,7 +1213,7 @@ void Error(int mode, char *format, ...)
   if (mode == ERR_INFO_LINE)
   {
     if (!last_line_was_separator)
-      fprintf_line(program.error_file, format, 79);
+      printf_log_line(format, 79);
 
     last_line_was_separator = TRUE;
 
@@ -997,16 +1231,20 @@ void Error(int mode, char *format, ...)
 
   if (format)
   {
-    va_list ap;
-
-    fprintf_nonewline(program.error_file, "%s%s: ", program.command_basename,
-		      process_name);
+#if !defined(PLATFORM_ANDROID)
+    printf_log_nonewline("%s%s: ", program.command_basename, process_name);
+#endif
 
     if (mode & ERR_WARN)
-      fprintf_nonewline(program.error_file, "warning: ");
+      printf_log_nonewline("warning: ");
+
+    if (mode & ERR_EXIT)
+      printf_log_nonewline("fatal error: ");
+
+    va_list ap;
 
     va_start(ap, format);
-    vfprintf_newline(program.error_file, format, ap);
+    vprintf_log(format, ap);
     va_end(ap);
 
     if ((mode & ERR_EXIT) && !(mode & ERR_FROM_SERVER))
@@ -1018,13 +1256,11 @@ void Error(int mode, char *format, ...)
   }
   
   if (mode & ERR_HELP)
-    fprintf_newline(program.error_file,
-		    "%s: Try option '--help' for more information.",
-		    program.command_basename);
+    printf_log("%s: Try option '--help' for more information.",
+	       program.command_basename);
 
   if (mode & ERR_EXIT)
-    fprintf_newline(program.error_file, "%s%s: aborting",
-		    program.command_basename, process_name);
+    printf_log("%s%s: aborting", program.command_basename, process_name);
 
   if (mode & ERR_EXIT)
   {
@@ -1098,7 +1334,7 @@ void clear_mem(void *ptr, unsigned int size)
 /* various helper functions                                                  */
 /* ------------------------------------------------------------------------- */
 
-inline void swap_numbers(int *i1, int *i2)
+void swap_numbers(int *i1, int *i2)
 {
   int help = *i1;
 
@@ -1106,7 +1342,7 @@ inline void swap_numbers(int *i1, int *i2)
   *i2 = help;
 }
 
-inline void swap_number_pairs(int *x1, int *y1, int *x2, int *y2)
+void swap_number_pairs(int *x1, int *y1, int *x2, int *y2)
 {
   int help_x = *x1;
   int help_y = *y1;
@@ -1854,6 +2090,10 @@ void addNodeToList(ListNode **node_first, char *key, void *content)
   node_new->key = getStringCopy(key);
   node_new->content = content;
   node_new->next = *node_first;
+
+  if (*node_first)
+    (*node_first)->prev = node_new;
+
   *node_first = node_new;
 }
 
@@ -1866,8 +2106,15 @@ void deleteNodeFromList(ListNode **node_first, char *key,
   if (strEqual((*node_first)->key, key))
   {
     checked_free((*node_first)->key);
+
     if (destructor_function)
       destructor_function((*node_first)->content);
+
+    if ((*node_first)->next)
+      (*node_first)->next->prev = (*node_first)->prev;
+
+    checked_free(*node_first);
+
     *node_first = (*node_first)->next;
   }
   else
@@ -2181,7 +2428,7 @@ DirectoryEntry *readDirectory(Directory *dir)
 
   dir->dir_entry->is_directory =
     (stat(dir->dir_entry->filename, &file_status) == 0 &&
-     (file_status.st_mode & S_IFMT) == S_IFDIR);
+     S_ISDIR(file_status.st_mode));
 
   return dir->dir_entry;
 }
@@ -2206,7 +2453,9 @@ boolean directoryExists(char *dir_name)
   if (dir_name == NULL)
     return FALSE;
 
-  boolean success = (access(dir_name, F_OK) == 0);
+  struct stat file_status;
+  boolean success = (stat(dir_name, &file_status) == 0 &&
+		     S_ISDIR(file_status.st_mode));
 
 #if defined(PLATFORM_ANDROID)
   if (!success)
@@ -2294,40 +2543,37 @@ boolean fileHasSuffix(char *basename, char *suffix)
   return FALSE;
 }
 
-static boolean FileCouldBeArtwork(char *basename)
+static boolean FileCouldBeArtwork(char *filename)
 {
+  char *basename = getBaseNamePtr(filename);
+
   return (!strEqual(basename, ".") &&
 	  !strEqual(basename, "..") &&
 	  !fileHasSuffix(basename, "txt") &&
-	  !fileHasSuffix(basename, "conf"));
+	  !fileHasSuffix(basename, "conf") &&
+	  !directoryExists(filename));
 }
 
 boolean FileIsGraphic(char *filename)
 {
-  char *basename = getBaseNamePtr(filename);
-
-  return FileCouldBeArtwork(basename);
+  return FileCouldBeArtwork(filename);
 }
 
 boolean FileIsSound(char *filename)
 {
-  char *basename = getBaseNamePtr(filename);
-
-  return FileCouldBeArtwork(basename);
+  return FileCouldBeArtwork(filename);
 }
 
 boolean FileIsMusic(char *filename)
 {
-  char *basename = getBaseNamePtr(filename);
-
-  return FileCouldBeArtwork(basename);
+  return FileCouldBeArtwork(filename);
 }
 
-boolean FileIsArtworkType(char *basename, int type)
+boolean FileIsArtworkType(char *filename, int type)
 {
-  if ((type == TREE_TYPE_GRAPHICS_DIR && FileIsGraphic(basename)) ||
-      (type == TREE_TYPE_SOUNDS_DIR && FileIsSound(basename)) ||
-      (type == TREE_TYPE_MUSIC_DIR && FileIsMusic(basename)))
+  if ((type == TREE_TYPE_GRAPHICS_DIR && FileIsGraphic(filename)) ||
+      (type == TREE_TYPE_SOUNDS_DIR && FileIsSound(filename)) ||
+      (type == TREE_TYPE_MUSIC_DIR && FileIsMusic(filename)))
     return TRUE;
 
   return FALSE;
@@ -2466,6 +2712,7 @@ int get_parameter_value(char *value_raw, char *suffix, int type)
 	      string_has_parameter(value, "fade")	? FADE_MODE_FADE :
 	      string_has_parameter(value, "crossfade")	? FADE_MODE_CROSSFADE :
 	      string_has_parameter(value, "melt")	? FADE_MODE_MELT :
+	      string_has_parameter(value, "curtain")	? FADE_MODE_CURTAIN :
 	      FADE_MODE_DEFAULT);
   }
   else if (strPrefix(suffix, ".font"))		/* (may also be ".font_xyz") */
@@ -3361,44 +3608,53 @@ void FreeCustomArtworkLists(struct ArtworkListInfo *artwork_info)
 /* (now also added for Windows, to create files in user data directory)      */
 /* ------------------------------------------------------------------------- */
 
-char *getErrorFilename(char *basename)
+char *getLogFilename(char *basename)
 {
   return getPath2(getUserGameDataDir(), basename);
 }
 
-void openErrorFile()
+void OpenLogFiles()
 {
+  int i;
+
   InitUserDataDirectory();
 
-  if ((program.error_file = fopen(program.error_filename, MODE_WRITE)) == NULL)
+  for (i = 0; i < NUM_LOGS; i++)
   {
-    program.error_file = stderr;
+    if ((program.log_file[i] = fopen(program.log_filename[i], MODE_WRITE))
+	== NULL)
+    {
+      program.log_file[i] = program.log_file_default[i];   // reset to default
 
-    Error(ERR_WARN, "cannot open file '%s' for writing: %s",
-	  program.error_filename, strerror(errno));
-  }
+      Error(ERR_WARN, "cannot open file '%s' for writing: %s",
+	    program.log_filename[i], strerror(errno));
+    }
 
-  /* error output should be unbuffered so it is not truncated in a crash */
-  setbuf(program.error_file, NULL);
+    /* output should be unbuffered so it is not truncated in a crash */
+    setbuf(program.log_file[i], NULL);
+  }
 }
 
-void closeErrorFile()
+void CloseLogFiles()
 {
-  if (program.error_file != stderr)	/* do not close stream 'stderr' */
-    fclose(program.error_file);
+  int i;
+
+  for (i = 0; i < NUM_LOGS; i++)
+    if (program.log_file[i] != program.log_file_default[i])
+      fclose(program.log_file[i]);
 }
 
-void dumpErrorFile()
+void DumpLogFile(int nr)
 {
-  FILE *error_file = fopen(program.error_filename, MODE_READ);
+  FILE *log_file = fopen(program.log_filename[nr], MODE_READ);
 
-  if (error_file != NULL)
-  {
-    while (!feof(error_file))
-      fputc(fgetc(error_file), stderr);
+  if (log_file == NULL)
+    return;
 
-    fclose(error_file);
-  }
+  while (!feof(log_file))
+    fputc(fgetc(log_file), stdout);
+
+  fclose(log_file);
 }
 
 void NotifyUserAboutErrorFile()
@@ -3407,7 +3663,8 @@ void NotifyUserAboutErrorFile()
   char *title_text = getStringCat2(program.program_title, " Error Message");
   char *error_text = getStringCat2("The program was aborted due to an error; "
 				   "for details, see the following error file:"
-				   STRING_NEWLINE, program.error_filename);
+				   STRING_NEWLINE,
+				   program.log_filename[LOG_ERR_ID]);
 
   MessageBox(NULL, error_text, title_text, MB_OK);
 #endif