67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
//////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// string.c
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//
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// This file contains most commonly used string operation. ALl the setup project should link here
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// or add the common utility here to avoid duplicating code everywhere or using CRT runtime.
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//
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// Created 4\15\997 inateeg
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//
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///////////////////////////////////////////////////////////////////////////////////////////////////
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#include <windows.h>
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#include "sdsutils.h"
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//=================================================================================================
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//
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// copied from msdev\crt\src\atox.c
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//
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// long AtoL(char *nptr) - Convert string to long
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//
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// Purpose:
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// Converts ASCII string pointed to by nptr to binary.
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// Overflow is not detected.
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//
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// Entry:
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// nptr = ptr to string to convert
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//
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// Exit:
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// return long int value of the string
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//
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// Exceptions:
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// None - overflow is not detected.
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//
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//=================================================================================================
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long AtoL(const char *nptr)
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{
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int c; /* current char */
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long total; /* current total */
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int sign; /* if '-', then negative, otherwise positive */
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// NOTE: no need to worry about DBCS chars here because IsSpace(c), IsDigit(c),
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// '+' and '-' are "pure" ASCII chars, i.e., they are neither DBCS Leading nor
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// DBCS Trailing bytes -- pritvi
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/* skip whitespace */
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while ( IsSpace((int)(unsigned char)*nptr) )
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++nptr;
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c = (int)(unsigned char)*nptr++;
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sign = c; /* save sign indication */
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if (c == '-' || c == '+')
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c = (int)(unsigned char)*nptr++; /* skip sign */
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total = 0;
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while (IsDigit(c)) {
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total = 10 * total + (c - '0'); /* accumulate digit */
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c = (int)(unsigned char)*nptr++; /* get next char */
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}
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if (sign == '-')
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return -total;
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else
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return total; /* return result, negated if necessary */
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}
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