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Cleanups from Hallvard

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This commit is contained in:
Howard Chu 2007-12-01 19:18:43 +00:00
parent 89b03a7db7
commit 3e05442795
1 changed files with 11 additions and 24 deletions
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35
libraries/liblutil/utils.c
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@ -663,6 +663,8 @@ scale( int new, lutil_int_decnum *prev, unsigned char *tmp )
* Output buffer must be provided, bv_len must indicate buffer size
* Hex input can be "0x1234" or "'1234'H"
*
* Temporarily modifies the input string.
*
* Note: High bit of binary form is always the sign bit. If the number
* is supposed to be positive but has the high bit set, a zero byte
* is prepended. It is assumed that this has already been handled on
@ -736,15 +738,15 @@ lutil_str2bin( struct berval *in, struct berval *out )
num.beg = num.bufsiz-1;
num.len = 0;
if ( pin[0] == '-' ) {
neg = 1;
neg = 0xff;
len--;
pin++;
}
#define DECMAX 8 /* 8 digits at a time */
if ( len > sizeof(tmpbuf)) {
tmp = ber_memalloc( len );
if ( len >= sizeof(tmpbuf)) {
tmp = ber_memalloc( len+1 );
} else {
tmp = tmpbuf;
}
@ -778,29 +780,14 @@ lutil_str2bin( struct berval *in, struct berval *out )
for ( i=0; i<num.len; i++ )
ptr[i] ^= 0xff;
/* Add 1, with carry */
i--;
j = 1;
for ( ; i>=0; i-- ) {
j += ptr[i];
ptr[i] = j & 0xff;
j >>= 8;
if (!j)
break;
}
/* If we overflowed and there's still room,
* set an explicit sign byte
*/
if ( !( ptr[0] & 0x80 ) && num.beg ) {
num.beg--;
num.len++;
num.buf[num.beg] = 0x80;
}
} else if (( num.buf[num.beg] & 0x80 ) && num.beg ) {
/* positive int with high bit set, prepend 0 */
/* add 1, with carry - overflow handled below */
while ( i-- && ! (ptr[i] = (ptr[i] + 1) & 0xff )) ;
}
/* Prepend sign byte if wrong sign bit */
if (( num.buf[num.beg] ^ neg ) & 0x80 ) {
num.beg--;
num.len++;
num.buf[num.beg] = 0;
num.buf[num.beg] = neg;
}
if ( num.beg )
AC_MEMCPY( num.buf, num.buf+num.beg, num.len );