1cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project/* Find the length of STRING, but scan at most MAXLEN characters. 205436638acc7c010349a69c3395f1a57c642dc62Ying Wang Copyright (C) 2005-2007, 2009-2012 Free Software Foundation, Inc. 3cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project Written by Simon Josefsson. 4cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project 5cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project This program is free software; you can redistribute it and/or modify 6cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project it under the terms of the GNU General Public License as published by 705436638acc7c010349a69c3395f1a57c642dc62Ying Wang the Free Software Foundation; either version 3, or (at your option) 8cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project any later version. 9cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project 10cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project This program is distributed in the hope that it will be useful, 11cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project but WITHOUT ANY WARRANTY; without even the implied warranty of 12cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project GNU General Public License for more details. 14cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project 15cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project You should have received a copy of the GNU General Public License 1605436638acc7c010349a69c3395f1a57c642dc62Ying Wang along with this program; if not, see <http://www.gnu.org/licenses/>. */ 17cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project 1805436638acc7c010349a69c3395f1a57c642dc62Ying Wang#include <config.h> 19cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project 2005436638acc7c010349a69c3395f1a57c642dc62Ying Wang#include <string.h> 21cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project 22cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project/* Find the length of STRING, but scan at most MAXLEN characters. 23cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project If no '\0' terminator is found in that many characters, return MAXLEN. */ 24cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project 25cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Projectsize_t 26cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Projectstrnlen (const char *string, size_t maxlen) 27cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project{ 28cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project const char *end = memchr (string, '\0', maxlen); 29cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project return end ? (size_t) (end - string) : maxlen; 30cea198a11f15a2eb071d98491ca9a8bc8cebfbc4The Android Open Source Project} 31