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lightning-sunbird  0.9+nobinonly
strlen.c
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00015  * The Original Code is the Netscape Portable Runtime (NSPR).
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00037 
00038 #include "plstr.h"
00039 #include "prtypes.h"
00040 #include "prlog.h"
00041 #include <string.h>
00042 
00043 PR_IMPLEMENT(PRUint32)
00044 PL_strlen(const char *str)
00045 {
00046     size_t l;
00047 
00048     if( (const char *)0 == str ) return 0;
00049 
00050     l = strlen(str);
00051 
00052     /* error checking in case we have a 64-bit platform -- make sure
00053      * we don't have ultra long strings that overflow an int32
00054      */ 
00055     if( sizeof(PRUint32) < sizeof(size_t) )
00056         PR_ASSERT(l < 2147483647);
00057 
00058     return (PRUint32)l;
00059 }
00060 
00061 PR_IMPLEMENT(PRUint32)
00062 PL_strnlen(const char *str, PRUint32 max)
00063 {
00064     register const char *s;
00065 
00066     if( (const char *)0 == str ) return 0;
00067     for( s = str; max && *s; s++, max-- )
00068         ;
00069 
00070     return (PRUint32)(s - str);
00071 }