/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at http://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ***************************************************************************/ /* These functions are borrowed from libcurl's lib/rawstr.c with minor * modifications to style and naming. Curl_raw_equal and Curl_raw_nequal are * further modified to be true cmp style functions, returning negative, zero, * or positive. */ #include <stdlib.h> #include "util.h" /* Portable, consistent toupper (remember EBCDIC). Do not use toupper() because its behavior is altered by the current locale. */ static char raw_toupper(char in) { switch(in) { case 'a': return 'A'; case 'b': return 'B'; case 'c': return 'C'; case 'd': return 'D'; case 'e': return 'E'; case 'f': return 'F'; case 'g': return 'G'; case 'h': return 'H'; case 'i': return 'I'; case 'j': return 'J'; case 'k': return 'K'; case 'l': return 'L'; case 'm': return 'M'; case 'n': return 'N'; case 'o': return 'O'; case 'p': return 'P'; case 'q': return 'Q'; case 'r': return 'R'; case 's': return 'S'; case 't': return 'T'; case 'u': return 'U'; case 'v': return 'V'; case 'w': return 'W'; case 'x': return 'X'; case 'y': return 'Y'; case 'z': return 'Z'; } return in; } /* * _alpm_raw_cmp() is for doing "raw" case insensitive strings. This is meant * to be locale independent and only compare strings we know are safe for * this. See http://daniel.haxx.se/blog/2008/10/15/strcasecmp-in-turkish/ for * some further explanation to why this function is necessary. * * The function is capable of comparing a-z case insensitively even for * non-ascii. */ int _alpm_raw_cmp(const char *first, const char *second) { while(*first && *second) { if(raw_toupper(*first) != raw_toupper(*second)) { /* get out of the loop as soon as they don't match */ break; } first++; second++; } /* we do the comparison here (possibly again), just to make sure that if the loop above is skipped because one of the strings reached zero, we must not return this as a successful match */ return (raw_toupper(*first) - raw_toupper(*second)); } int _alpm_raw_ncmp(const char *first, const char *second, size_t max) { while(*first && *second && max) { if(raw_toupper(*first) != raw_toupper(*second)) { break; } max--; first++; second++; } if(0 == max) { /* they are equal this far */ return 0; } return (raw_toupper(*first) - raw_toupper(*second)); }