// © 2016 and later: Unicode, Inc. and others.

// License & terms of use: http://www.unicode.org/copyright.html

/*

**********************************************************************

*   Copyright (C) 2001-2006, International Business Machines

*   Corporation and others.  All Rights Reserved.

**********************************************************************

*/

#include "cstring.h"

#include "ustrfmt.h"

/***

 * Fills in a UChar* string with the radix-based representation of a

 * uint32_t number padded with zeroes to minwidth.  The result

 * will be null terminated if there is room.

 *

 * @param buffer UChar buffer to receive result

 * @param capacity capacity of buffer

 * @param i the unsigned number to be formatted

 * @param radix the radix from 2..36

 * @param minwidth the minimum width.  If the result is narrower than

 *        this, '0's will be added on the left.  Must be <=

 *        capacity.

 * @return the length of the result, not including any terminating

 *        null

 */

U_CAPI int32_t U_EXPORT2

uprv_itou (UChar * buffer, int32_t capacity,

           uint32_t i, uint32_t radix, int32_t minwidth)

{

    int32_t length = 0;

    int digit;

    int32_t j;

    UChar temp;

    do{

        digit = (int)(i % radix);

        buffer[length++]=(UChar)(digit<=9?(0x0030+digit):(0x0030+digit+7));

        i=i/radix;

    } while(i && length<capacity);

    while (length < minwidth){

        buffer[length++] = (UChar) 0x0030;/*zero padding */

    }

    /* null terminate the buffer */

    if(length<capacity){

        buffer[length] = (UChar) 0x0000;

    }

    /* Reverses the string */

    for (j = 0; j < (length / 2); j++){

        temp = buffer[(length-1) - j];

        buffer[(length-1) - j] = buffer[j];

        buffer[j] = temp;

    }

    return length;

}