rnd-19990925-1-src

[rocksndiamonds.git] / src / misc.c

diff --git a/src/misc.c b/src/misc.c
index c3e5b205eaa0e83837b2ed5b13d5bf4db5000d71..3da335978e5a2a539899ad89edc9c3e5bb77cabc 100644 (file)
--- a/src/misc.c
+++ b/src/misc.c
@@ -167,9 +167,20 @@ void WaitUntilDelayReached(unsigned long *counter_var, unsigned long delay)
   *counter_var = actual_counter;
 }
 
+/* int2str() returns a number converted to a string;
+   the used memory is static, but will be overwritten by later calls,
+   so if you want to save the result, copy it to a private string buffer;
+   there can be 10 local calls of int2str() without buffering the result --
+   the 11th call will then destroy the result from the first call and so on.
+*/
+
 char *int2str(int number, int size)
 {
-  static char s[40];
+  static char shift_array[10][40];
+  static int shift_counter = 0;
+  char *s = shift_array[shift_counter];
+
+  shift_counter = (shift_counter + 1) % 10;
 
   if (size > 20)
     size = 20;
@@ -235,12 +246,49 @@ char *getLoginName()
 {
   struct passwd *pwd;
 
-  if (!(pwd = getpwuid(getuid())))
-    return "ANONYMOUS";
+  if ((pwd = getpwuid(getuid())) == NULL)
+    return ANONYMOUS_NAME;
   else
     return pwd->pw_name;
 }
 
+char *getRealName()
+{
+#ifndef MSDOS
+  struct passwd *pwd;
+
+  if ((pwd = getpwuid(getuid())) == NULL || strlen(pwd->pw_gecos) == 0)
+    return ANONYMOUS_NAME;
+  else
+  {
+    static char real_name[1024];
+    char *from_ptr = pwd->pw_gecos, *to_ptr = real_name;
+
+    if (strchr(pwd->pw_gecos, 'ß') == NULL)
+      return pwd->pw_gecos;
+
+    /* the user's real name contains a 'ß' character (german sharp s),
+       which has no equivalent in upper case letters (which our fonts use) */
+    while (*from_ptr != '\0' && (long)(to_ptr - real_name) < 1024 - 2)
+    {
+      if (*from_ptr != 'ß')
+       *to_ptr++ = *from_ptr++;
+      else
+      {
+       from_ptr++;
+       *to_ptr++ = 's';
+       *to_ptr++ = 's';
+      }
+    }
+    *to_ptr = '\0';
+
+    return real_name;
+  }
+#else
+  return ANONYMOUS_NAME;
+#endif
+}
+
 char *getHomeDir()
 {
 #ifndef MSDOS
@@ -299,6 +347,7 @@ char *getStringToLower(char *s)
 
   while (*s)
     *s_ptr++ = tolower(*s++);
+  *s_ptr = '\0';
 
   return s_copy;
 }
@@ -342,8 +391,9 @@ void GetOptions(char *argv[])
   options.display_name = NULL;
   options.server_host = NULL;
   options.server_port = 0;
-  options.base_directory = BASE_PATH;
-  options.level_directory = BASE_PATH "/" LEVELS_DIRECTORY;
+  options.ro_base_directory = RO_BASE_PATH;
+  options.rw_base_directory = RW_BASE_PATH;
+  options.level_directory = RO_BASE_PATH "/" LEVELS_DIRECTORY;
   options.serveronly = FALSE;
   options.network = FALSE;
   options.verbose = FALSE;
@@ -409,13 +459,15 @@ void GetOptions(char *argv[])
       if (option_arg == NULL)
        Error(ERR_EXIT_HELP, "option '%s' requires an argument", option_str);
 
-      options.base_directory = option_arg;
+      /* this should be extended to separate options for ro and rw data */
+      options.ro_base_directory = option_arg;
+      options.rw_base_directory = option_arg;
       if (option_arg == next_option)
        options_left++;
 
       /* adjust path for level directory accordingly */
       options.level_directory =
-       getPath2(options.base_directory, LEVELS_DIRECTORY);
+       getPath2(options.ro_base_directory, LEVELS_DIRECTORY);
     }
     else if (strncmp(option, "-levels", option_len) == 0)
     {
@@ -542,6 +594,84 @@ void *checked_calloc(unsigned long size)
   return ptr;
 }
 
+short getFile16BitInteger(FILE *file, int byte_order)
+{
+  if (byte_order == BYTE_ORDER_BIG_ENDIAN)
+    return ((fgetc(file) <<  8) |
+           (fgetc(file) <<  0));
+  else          /* BYTE_ORDER_LITTLE_ENDIAN */
+    return ((fgetc(file) <<  0) |
+           (fgetc(file) <<  8));
+}
+
+void putFile16BitInteger(FILE *file, short value, int byte_order)
+{
+  if (byte_order == BYTE_ORDER_BIG_ENDIAN)
+  {
+    fputc((value >>  8) & 0xff, file);
+    fputc((value >>  0) & 0xff, file);
+  }
+  else          /* BYTE_ORDER_LITTLE_ENDIAN */
+  {
+    fputc((value >>  0) & 0xff, file);
+    fputc((value >>  8) & 0xff, file);
+  }
+}
+
+int getFile32BitInteger(FILE *file, int byte_order)
+{
+  if (byte_order == BYTE_ORDER_BIG_ENDIAN)
+    return ((fgetc(file) << 24) |
+           (fgetc(file) << 16) |
+           (fgetc(file) <<  8) |
+           (fgetc(file) <<  0));
+  else          /* BYTE_ORDER_LITTLE_ENDIAN */
+    return ((fgetc(file) <<  0) |
+           (fgetc(file) <<  8) |
+           (fgetc(file) << 16) |
+           (fgetc(file) << 24));
+}
+
+void putFile32BitInteger(FILE *file, int value, int byte_order)
+{
+  if (byte_order == BYTE_ORDER_BIG_ENDIAN)
+  {
+    fputc((value >> 24) & 0xff, file);
+    fputc((value >> 16) & 0xff, file);
+    fputc((value >>  8) & 0xff, file);
+    fputc((value >>  0) & 0xff, file);
+  }
+  else          /* BYTE_ORDER_LITTLE_ENDIAN */
+  {
+    fputc((value >>  0) & 0xff, file);
+    fputc((value >>  8) & 0xff, file);
+    fputc((value >> 16) & 0xff, file);
+    fputc((value >> 24) & 0xff, file);
+  }
+}
+
+void getFileChunk(FILE *file, char *chunk_buffer, int *chunk_length,
+                 int byte_order)
+{
+  const int chunk_identifier_length = 4;
+
+  /* read chunk identifier */
+  fgets(chunk_buffer, chunk_identifier_length + 1, file);
+
+  /* read chunk length */
+  *chunk_length = getFile32BitInteger(file, byte_order);
+}
+
+void putFileChunk(FILE *file, char *chunk_name, int chunk_length,
+                 int byte_order)
+{
+  /* write chunk identifier */
+  fputs(chunk_name, file);
+
+  /* write chunk length */
+  putFile32BitInteger(file, chunk_length, byte_order);
+}
+
 #define TRANSLATE_KEYSYM_TO_KEYNAME    0
 #define TRANSLATE_KEYSYM_TO_X11KEYNAME 1
 #define TRANSLATE_X11KEYNAME_TO_KEYSYM 2