| 1 | /* $Id: kHlpInt2Ascii.c 113 2018-07-12 11:34:27Z bird $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * kHlpString - kHlpInt2Ascii.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
|
|---|
| 8 | *
|
|---|
| 9 | * Permission is hereby granted, free of charge, to any person
|
|---|
| 10 | * obtaining a copy of this software and associated documentation
|
|---|
| 11 | * files (the "Software"), to deal in the Software without
|
|---|
| 12 | * restriction, including without limitation the rights to use,
|
|---|
| 13 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|---|
| 14 | * copies of the Software, and to permit persons to whom the
|
|---|
| 15 | * Software is furnished to do so, subject to the following
|
|---|
| 16 | * conditions:
|
|---|
| 17 | *
|
|---|
| 18 | * The above copyright notice and this permission notice shall be
|
|---|
| 19 | * included in all copies or substantial portions of the Software.
|
|---|
| 20 | *
|
|---|
| 21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|---|
| 22 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
|---|
| 23 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|---|
| 24 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
|---|
| 25 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|---|
| 26 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|---|
| 27 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|---|
| 28 | * OTHER DEALINGS IN THE SOFTWARE.
|
|---|
| 29 | */
|
|---|
| 30 |
|
|---|
| 31 | /*******************************************************************************
|
|---|
| 32 | * Header Files *
|
|---|
| 33 | *******************************************************************************/
|
|---|
| 34 | #include <k/kHlpString.h>
|
|---|
| 35 |
|
|---|
| 36 |
|
|---|
| 37 | /**
|
|---|
| 38 | * Converts an signed integer to an ascii string.
|
|---|
| 39 | *
|
|---|
| 40 | * @returns psz.
|
|---|
| 41 | * @param psz Pointer to the output buffer.
|
|---|
| 42 | * @param cch The size of the output buffer.
|
|---|
| 43 | * @param lVal The value.
|
|---|
| 44 | * @param iBase The base to format it. (2,8,10 or 16)
|
|---|
| 45 | */
|
|---|
| 46 | KHLP_DECL(char *) kHlpInt2Ascii(char *psz, KSIZE cch, long lVal, unsigned iBase)
|
|---|
| 47 | {
|
|---|
| 48 | static const char s_szDigits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
|
|---|
| 49 | char *pszRet = psz;
|
|---|
| 50 |
|
|---|
| 51 | if (psz != NULL)
|
|---|
| 52 | {
|
|---|
| 53 | if (cch >= (lVal < 0 ? 3U : 2U))
|
|---|
| 54 | {
|
|---|
| 55 | /* prefix */
|
|---|
| 56 | if (lVal < 0)
|
|---|
| 57 | {
|
|---|
| 58 | *psz++ = '-';
|
|---|
| 59 | cch--;
|
|---|
| 60 | lVal = -lVal;
|
|---|
| 61 | }
|
|---|
| 62 |
|
|---|
| 63 | /* the digits */
|
|---|
| 64 | do
|
|---|
| 65 | {
|
|---|
| 66 | *psz++ = s_szDigits[lVal % iBase];
|
|---|
| 67 | cch--;
|
|---|
| 68 | lVal /= iBase;
|
|---|
| 69 | } while (lVal && cch > 1);
|
|---|
| 70 |
|
|---|
| 71 | /* overflow indicator */
|
|---|
| 72 | if (lVal)
|
|---|
| 73 | psz[-1] = '+';
|
|---|
| 74 | }
|
|---|
| 75 | else if (cch > 1)
|
|---|
| 76 | *psz++ = '+';
|
|---|
| 77 | else if (cch < 1)
|
|---|
| 78 | return pszRet;
|
|---|
| 79 | *psz = '\0';
|
|---|
| 80 | }
|
|---|
| 81 | return pszRet;
|
|---|
| 82 | }
|
|---|
| 83 |
|
|---|
