int encode_index_from_char(char c) {
int result = NEUTRAL_CHAR_INDEX;
if (IS_UPPER_CASE(c)) {
result = c - UPPER_CASE_ASCII + UPPER_CASE_SUBSTR_OFFSET;
} else if (IS_LOWER_CASE(c)) {
result = c - LOWER_CASE_ASCII + LOWER_CASE_SUBSTR_OFFSET;
}
return result;
}
int getEncodedCharIndex(char c) {
int result = -1;
if (IS_UPPER_CASE(c)) {
result = c - UPPER_OFFSET;
} else if (IS_LOWER_CASE(c)) {
result = c - LOWER_OFFSET;
}
return result;
}
static int
is_valid_char_in_short_name (unsigned char ch)
{
if (ch > 0x7F)
return 0;
if (IS_UPPER_CASE(ch) || IS_LOWER_CASE(ch) || IS_DIGITS(ch))
{
return 1;
}
switch (ch)
{
case '$': case '%': case '\'': case '-':
case '_': case '@': case '~': case '`':
case '!': case '(': case ')': case '{':
case '}': case '^': case '#': case '&':
return 1;
default:
return 0;
}
}