File: case.c

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#include "dbmi.h"

/*!
 \fn void db_char_to_lowercase (char *s)
 \brief 
 \return 
 \param 
*/
void
db_char_to_lowercase (char *s)
{
    if (*s >= 'A' && *s <= 'Z')
	*s -= 'A' - 'a' ;
}

/*!
 \fn void db_char_to_uppercase (char *s)
 \brief 
 \return 
 \param 
*/
void
db_char_to_uppercase (char *s)
{
    if (*s >= 'a' && *s <= 'z')
	*s += 'A' - 'a' ;
}

/*!
 \fn void db_Cstring_to_lowercase (char *s)
 \brief 
 \return 
 \param 
*/
void
db_Cstring_to_lowercase (char *s)
{
    while (*s)
	db_char_to_lowercase (s++);
}

/*!
 \fn void db_Cstring_to_uppercase (char *s)
 \brief 
 \return 
 \param 
*/
void
db_Cstring_to_uppercase (char *s)
{
    while (*s)
	db_char_to_uppercase (s++);
}

/*!
 \fn int db_nocase_compare (char *a, char *b)
 \brief 
 \return 
 \param 
*/
int
db_nocase_compare (char *a, char *b)
{
    char s, t;

    while (*a && *b)
    {
	s = *a++;
	t = *b++;
	db_char_to_uppercase (&s);
	db_char_to_uppercase (&t);
	if (s != t)
	    return 0;
    }
    return (*a == 0 && *b == 0);
}