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