Subversion Repositories de1_olpcl2294_system

//

//

//

//-----------------------------------------------------------------------------

// String functions. Some of these are duplicates of the same functions in

// the I18N package.

// Validate a hex character

__inline__ static bool

_is_hex(char c)

{

    return (((c >= '0') && (c <= '9')) ||

            ((c >= 'A') && (c <= 'F')) ||

            ((c >= 'a') && (c <= 'f')));

}

// Convert a single hex nibble

__inline__ static int

_from_hex(char c)

{

    int ret = 0;

    if ((c >= '0') && (c <= '9')) {

        ret = (c - '0');

    } else if ((c >= 'a') && (c <= 'f')) {

        ret = (c - 'a' + 0x0a);

    } else if ((c >= 'A') && (c <= 'F')) {

        ret = (c - 'A' + 0x0A);

    }

    return ret;

}

// Convert a character to lower case

__inline__ static char

_tolower(char c)

{

    if ((c >= 'A') && (c <= 'Z')) {

        c = (c - 'A') + 'a';

    }

    return c;

}

// Validate alpha

__inline__ static bool

isalpha(int c)

{

    return (((c >= 'a') && (c <= 'z')) ||

            ((c >= 'A') && (c <= 'Z')));

}

// Validate digit

__inline__ static bool

isdigit(int c)

{

    return ((c >= '0') && (c <= '9'));

}

// Validate alphanum

__inline__ static bool

isalnum(int c)

{

    return (isalpha(c) || isdigit(c));

}