+ return num_bytes;
+}
+
+int getFileVersion(File *file)
+{
+ int version_super = getByteFromFile(file);
+ int version_major = getByteFromFile(file);
+ int version_minor = getByteFromFile(file);
+ int version_patch = getByteFromFile(file);
+
+ return VERSION_IDENT(version_super, version_major, version_minor,
+ version_patch);
+}
+
+int putFileVersion(FILE *file, int version)
+{
+ if (file != NULL)
+ {
+ int version_super = VERSION_SUPER(version);
+ int version_major = VERSION_MAJOR(version);
+ int version_minor = VERSION_MINOR(version);
+ int version_patch = VERSION_PATCH(version);
+
+ fputc(version_super, file);
+ fputc(version_major, file);
+ fputc(version_minor, file);
+ fputc(version_patch, file);
+ }
+
+ return 4;
+}
+
+void ReadBytesFromFile(File *file, byte *buffer, unsigned int bytes)
+{
+ int i;
+
+ for (i = 0; i < bytes && !checkEndOfFile(file); i++)
+ buffer[i] = getByteFromFile(file);
+}
+
+void WriteBytesToFile(FILE *file, byte *buffer, unsigned int bytes)
+{
+ int i;
+
+ for (i = 0; i < bytes; i++)
+ fputc(buffer[i], file);
+}
+
+void ReadUnusedBytesFromFile(File *file, unsigned int bytes)
+{
+ while (bytes-- && !checkEndOfFile(file))
+ getByteFromFile(file);
+}
+
+void WriteUnusedBytesToFile(FILE *file, unsigned int bytes)
+{
+ while (bytes--)
+ fputc(0, file);
+}
+
+
+// ----------------------------------------------------------------------------
+// functions to convert between ISO-8859-1 and UTF-8
+// ----------------------------------------------------------------------------
+
+char *getUTF8FromLatin1(char *latin1)
+{
+ int max_utf8_size = 2 * strlen(latin1) + 1;
+ char *utf8 = checked_calloc(max_utf8_size);
+ unsigned char *src = (unsigned char *)latin1;
+ unsigned char *dst = (unsigned char *)utf8;
+
+ while (*src)
+ {
+ if (*src < 128) // pure 7-bit ASCII
+ {
+ *dst++ = *src;
+ }
+ else if (*src >= 160) // non-ASCII characters
+ {
+ *dst++ = 194 + (*src >= 192);
+ *dst++ = 128 + (*src & 63);
+ }
+ else // undefined in ISO-8859-1
+ {
+ *dst++ = '?';
+ }
+
+ src++;
+ }
+
+ // only use the smallest possible string buffer size
+ utf8 = checked_realloc(utf8, strlen(utf8) + 1);
+
+ return utf8;
+}
+
+char *getLatin1FromUTF8(char *utf8)
+{
+ int max_latin1_size = strlen(utf8) + 1;
+ char *latin1 = checked_calloc(max_latin1_size);
+ unsigned char *src = (unsigned char *)utf8;
+ unsigned char *dst = (unsigned char *)latin1;
+
+ while (*src)
+ {
+ if (*src < 128) // pure 7-bit ASCII
+ {
+ *dst++ = *src++;
+ }
+ else if (src[0] == 194 &&
+ src[1] >= 128 && src[1] < 192) // non-ASCII characters
+ {
+ *dst++ = src[1];
+ src += 2;
+ }
+ else if (src[0] == 195 &&
+ src[1] >= 128 && src[1] < 192) // non-ASCII characters
+ {
+ *dst++ = src[1] + 64;
+ src += 2;
+ }
+
+ // all other UTF-8 characters are undefined in ISO-8859-1
+
+ else if (src[0] >= 192 && src[0] < 224 &&
+ src[1] >= 128 && src[1] < 192)
+ {
+ *dst++ = '?';
+ src += 2;
+ }
+ else if (src[0] >= 224 && src[0] < 240 &&
+ src[1] >= 128 && src[1] < 192 &&
+ src[2] >= 128 && src[2] < 192)
+ {
+ *dst++ = '?';
+ src += 3;
+ }
+ else if (src[0] >= 240 && src[0] < 248 &&
+ src[1] >= 128 && src[1] < 192 &&
+ src[2] >= 128 && src[2] < 192 &&
+ src[3] >= 128 && src[3] < 192)
+ {
+ *dst++ = '?';
+ src += 4;
+ }
+ else if (src[0] >= 248 && src[0] < 252 &&
+ src[1] >= 128 && src[1] < 192 &&
+ src[2] >= 128 && src[2] < 192 &&
+ src[3] >= 128 && src[3] < 192 &&
+ src[4] >= 128 && src[4] < 192)
+ {
+ *dst++ = '?';
+ src += 5;
+ }
+ else if (src[0] >= 252 && src[0] < 254 &&
+ src[1] >= 128 && src[1] < 192 &&
+ src[2] >= 128 && src[2] < 192 &&
+ src[3] >= 128 && src[3] < 192 &&
+ src[4] >= 128 && src[4] < 192 &&
+ src[5] >= 128 && src[5] < 192)
+ {
+ *dst++ = '?';
+ src += 6;
+ }
+ else
+ {
+ *dst++ = '?';
+ src++;
+ }
+ }
+
+ // only use the smallest possible string buffer size
+ latin1 = checked_realloc(latin1, strlen(latin1) + 1);