From: Unknown <> Date: Wed, 30 Aug 2006 23:36:29 +0000 (+0000) Subject: add files for 2006-08-30T23:36:29Z X-Git-Tag: imap-2007a1~414 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a9a6ac1b684b6956be62f3411a8dd3d5f659ada2;p=uw-imap add files for 2006-08-30T23:36:29Z --- diff --git a/src/ansilib/strtoul.c b/src/ansilib/strtoul.c new file mode 100644 index 0000000..0646b63 --- /dev/null +++ b/src/ansilib/strtoul.c @@ -0,0 +1,73 @@ +/* ======================================================================== + * Copyright 1988-2006 University of Washington + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * + * ======================================================================== + */ + +/* + * Program: String to unsigned long + * + * Author: Mark Crispin + * Networks and Distributed Computing + * Computing & Communications + * University of Washington + * Administration Building, AG-44 + * Seattle, WA 98195 + * + * Date: 14 February 1995 + * Last Edited: 30 August 2006 + */ + +/* + * Turn a string unsigned long into the real thing + * Accepts: source string + * pointer to place to return end pointer + * base + * Returns: parsed unsigned long integer, end pointer is updated + */ + +unsigned long strtoul (char *t,char **endp,int base) +{ + unsigned long value = 0; /* the accumulated value */ + int negative = 0; /* this a negative number? */ + unsigned char c,*s = t; + if (base && (base < 2 || base > 36)) { + errno = EINVAL; /* insist upon valid base */ + return value; + } + while (isspace (*s)) s++; /* skip leading whitespace */ + switch (*s) { /* check for leading sign char */ + case '-': + negative = 1; /* yes, negative #. fall into '+' */ + case '+': + s++; /* skip the sign character */ + } + if (!base) { /* base not specified? */ + if (*s != '0') base = 10; /* must be decimal if doesn't start with 0 */ + /* starts with 0x? */ + else if (tolower (*++s) == 'x') { + base = 16; /* yes, is hex */ + s++; /* skip the x */ + } + else base = 8; /* ...or octal */ + } + do { /* convert to numeric form if digit */ + if (isdigit (*s)) c = *s - '0'; + /* alphabetic conversion */ + else if (isalpha (*s)) c = *s - (isupper (*s) ? 'A' : 'a') + 10; + else break; /* else no way it's valid */ + if (c >= base) break; /* digit out of range for base? */ + value = value * base + c; /* accumulate the digit */ + } while (*++s); /* loop until non-numeric character */ + if (tolower (*s) == 'l') s++; /* ignore 'l' or 'L' marker */ + if (endp) *endp = s; /* save users endp to after number */ + /* negate number if needed */ + return negative ? -value : value; +}