michael@0: /*
michael@0: **********************************************************************
michael@0: *   Copyright (C) 2001-2006, International Business Machines
michael@0: *   Corporation and others.  All Rights Reserved.
michael@0: **********************************************************************
michael@0: */
michael@0: 
michael@0: #include "cstring.h"
michael@0: #include "ustrfmt.h"
michael@0: 
michael@0: 
michael@0: /***
michael@0:  * Fills in a UChar* string with the radix-based representation of a
michael@0:  * uint32_t number padded with zeroes to minwidth.  The result
michael@0:  * will be null terminated if there is room.
michael@0:  *
michael@0:  * @param buffer UChar buffer to receive result
michael@0:  * @param capacity capacity of buffer
michael@0:  * @param i the unsigned number to be formatted
michael@0:  * @param radix the radix from 2..36
michael@0:  * @param minwidth the minimum width.  If the result is narrower than
michael@0:  *        this, '0's will be added on the left.  Must be <=
michael@0:  *        capacity.
michael@0:  * @return the length of the result, not including any terminating
michael@0:  *        null
michael@0:  */
michael@0: U_CAPI int32_t U_EXPORT2
michael@0: uprv_itou (UChar * buffer, int32_t capacity,
michael@0:            uint32_t i, uint32_t radix, int32_t minwidth)
michael@0: {
michael@0:     int32_t length = 0;
michael@0:     int digit;
michael@0:     int32_t j;
michael@0:     UChar temp;
michael@0: 
michael@0:     do{
michael@0:         digit = (int)(i % radix);
michael@0:         buffer[length++]=(UChar)(digit<=9?(0x0030+digit):(0x0030+digit+7));
michael@0:         i=i/radix;
michael@0:     } while(i && length<capacity);
michael@0: 
michael@0:     while (length < minwidth){
michael@0:         buffer[length++] = (UChar) 0x0030;/*zero padding */
michael@0:     }
michael@0:     /* null terminate the buffer */
michael@0:     if(length<capacity){
michael@0:         buffer[length] = (UChar) 0x0000;
michael@0:     }
michael@0: 
michael@0:     /* Reverses the string */
michael@0:     for (j = 0; j < (length / 2); j++){
michael@0:         temp = buffer[(length-1) - j];
michael@0:         buffer[(length-1) - j] = buffer[j];
michael@0:         buffer[j] = temp;
michael@0:     }
michael@0:     return length;
michael@0: }