[337] | 1 | /***************************************************************************
|
---|
| 2 | * _ _ ____ _
|
---|
| 3 | * Project ___| | | | _ \| |
|
---|
| 4 | * / __| | | | |_) | |
|
---|
| 5 | * | (__| |_| | _ <| |___
|
---|
| 6 | * \___|\___/|_| \_\_____|
|
---|
| 7 | *
|
---|
| 8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
|
---|
| 9 | *
|
---|
| 10 | * This software is licensed as described in the file COPYING, which
|
---|
| 11 | * you should have received as part of this distribution. The terms
|
---|
| 12 | * are also available at https://curl.haxx.se/docs/copyright.html.
|
---|
| 13 | *
|
---|
| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
---|
| 15 | * copies of the Software, and permit persons to whom the Software is
|
---|
| 16 | * furnished to do so, under the terms of the COPYING file.
|
---|
| 17 | *
|
---|
| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
---|
| 19 | * KIND, either express or implied.
|
---|
| 20 | *
|
---|
| 21 | ***************************************************************************/
|
---|
| 22 |
|
---|
| 23 | #include "curl_setup.h"
|
---|
| 24 |
|
---|
| 25 | #include <curl/curl.h>
|
---|
| 26 |
|
---|
| 27 | #include "strcase.h"
|
---|
| 28 |
|
---|
| 29 | /* Portable, consistent toupper (remember EBCDIC). Do not use toupper() because
|
---|
| 30 | its behavior is altered by the current locale. */
|
---|
| 31 | char Curl_raw_toupper(char in)
|
---|
| 32 | {
|
---|
| 33 | #if !defined(CURL_DOES_CONVERSIONS)
|
---|
| 34 | if(in >= 'a' && in <= 'z')
|
---|
| 35 | return (char)('A' + in - 'a');
|
---|
| 36 | #else
|
---|
| 37 | switch(in) {
|
---|
| 38 | case 'a':
|
---|
| 39 | return 'A';
|
---|
| 40 | case 'b':
|
---|
| 41 | return 'B';
|
---|
| 42 | case 'c':
|
---|
| 43 | return 'C';
|
---|
| 44 | case 'd':
|
---|
| 45 | return 'D';
|
---|
| 46 | case 'e':
|
---|
| 47 | return 'E';
|
---|
| 48 | case 'f':
|
---|
| 49 | return 'F';
|
---|
| 50 | case 'g':
|
---|
| 51 | return 'G';
|
---|
| 52 | case 'h':
|
---|
| 53 | return 'H';
|
---|
| 54 | case 'i':
|
---|
| 55 | return 'I';
|
---|
| 56 | case 'j':
|
---|
| 57 | return 'J';
|
---|
| 58 | case 'k':
|
---|
| 59 | return 'K';
|
---|
| 60 | case 'l':
|
---|
| 61 | return 'L';
|
---|
| 62 | case 'm':
|
---|
| 63 | return 'M';
|
---|
| 64 | case 'n':
|
---|
| 65 | return 'N';
|
---|
| 66 | case 'o':
|
---|
| 67 | return 'O';
|
---|
| 68 | case 'p':
|
---|
| 69 | return 'P';
|
---|
| 70 | case 'q':
|
---|
| 71 | return 'Q';
|
---|
| 72 | case 'r':
|
---|
| 73 | return 'R';
|
---|
| 74 | case 's':
|
---|
| 75 | return 'S';
|
---|
| 76 | case 't':
|
---|
| 77 | return 'T';
|
---|
| 78 | case 'u':
|
---|
| 79 | return 'U';
|
---|
| 80 | case 'v':
|
---|
| 81 | return 'V';
|
---|
| 82 | case 'w':
|
---|
| 83 | return 'W';
|
---|
| 84 | case 'x':
|
---|
| 85 | return 'X';
|
---|
| 86 | case 'y':
|
---|
| 87 | return 'Y';
|
---|
| 88 | case 'z':
|
---|
| 89 | return 'Z';
|
---|
| 90 | }
|
---|
| 91 | #endif
|
---|
| 92 |
|
---|
| 93 | return in;
|
---|
| 94 | }
|
---|
| 95 |
|
---|
| 96 | /*
|
---|
| 97 | * Curl_strcasecompare() is for doing "raw" case insensitive strings. This is
|
---|
| 98 | * meant to be locale independent and only compare strings we know are safe
|
---|
| 99 | * for this. See
|
---|
| 100 | * https://daniel.haxx.se/blog/2008/10/15/strcasecmp-in-turkish/ for some
|
---|
| 101 | * further explanation to why this function is necessary.
|
---|
| 102 | *
|
---|
| 103 | * The function is capable of comparing a-z case insensitively even for
|
---|
| 104 | * non-ascii.
|
---|
| 105 | *
|
---|
| 106 | * @unittest: 1301
|
---|
| 107 | */
|
---|
| 108 |
|
---|
| 109 | int Curl_strcasecompare(const char *first, const char *second)
|
---|
| 110 | {
|
---|
| 111 | while(*first && *second) {
|
---|
| 112 | if(Curl_raw_toupper(*first) != Curl_raw_toupper(*second))
|
---|
| 113 | /* get out of the loop as soon as they don't match */
|
---|
| 114 | break;
|
---|
| 115 | first++;
|
---|
| 116 | second++;
|
---|
| 117 | }
|
---|
| 118 | /* we do the comparison here (possibly again), just to make sure that if the
|
---|
| 119 | loop above is skipped because one of the strings reached zero, we must not
|
---|
| 120 | return this as a successful match */
|
---|
| 121 | return (Curl_raw_toupper(*first) == Curl_raw_toupper(*second));
|
---|
| 122 | }
|
---|
| 123 |
|
---|
| 124 | int Curl_safe_strcasecompare(const char *first, const char *second)
|
---|
| 125 | {
|
---|
| 126 | if(first && second)
|
---|
| 127 | /* both pointers point to something then compare them */
|
---|
| 128 | return Curl_strcasecompare(first, second);
|
---|
| 129 |
|
---|
| 130 | /* if both pointers are NULL then treat them as equal */
|
---|
| 131 | return (NULL == first && NULL == second);
|
---|
| 132 | }
|
---|
| 133 |
|
---|
| 134 | /*
|
---|
| 135 | * @unittest: 1301
|
---|
| 136 | */
|
---|
| 137 | int Curl_strncasecompare(const char *first, const char *second, size_t max)
|
---|
| 138 | {
|
---|
| 139 | while(*first && *second && max) {
|
---|
| 140 | if(Curl_raw_toupper(*first) != Curl_raw_toupper(*second)) {
|
---|
| 141 | break;
|
---|
| 142 | }
|
---|
| 143 | max--;
|
---|
| 144 | first++;
|
---|
| 145 | second++;
|
---|
| 146 | }
|
---|
| 147 | if(0 == max)
|
---|
| 148 | return 1; /* they are equal this far */
|
---|
| 149 |
|
---|
| 150 | return Curl_raw_toupper(*first) == Curl_raw_toupper(*second);
|
---|
| 151 | }
|
---|
| 152 |
|
---|
| 153 | /* Copy an upper case version of the string from src to dest. The
|
---|
| 154 | * strings may overlap. No more than n characters of the string are copied
|
---|
| 155 | * (including any NUL) and the destination string will NOT be
|
---|
| 156 | * NUL-terminated if that limit is reached.
|
---|
| 157 | */
|
---|
| 158 | void Curl_strntoupper(char *dest, const char *src, size_t n)
|
---|
| 159 | {
|
---|
| 160 | if(n < 1)
|
---|
| 161 | return;
|
---|
| 162 |
|
---|
| 163 | do {
|
---|
| 164 | *dest++ = Curl_raw_toupper(*src);
|
---|
| 165 | } while(*src++ && --n);
|
---|
| 166 | }
|
---|
| 167 |
|
---|
| 168 | /* --- public functions --- */
|
---|
| 169 |
|
---|
| 170 | int curl_strequal(const char *first, const char *second)
|
---|
| 171 | {
|
---|
| 172 | return Curl_strcasecompare(first, second);
|
---|
| 173 | }
|
---|
| 174 | int curl_strnequal(const char *first, const char *second, size_t max)
|
---|
| 175 | {
|
---|
| 176 | return Curl_strncasecompare(first, second, max);
|
---|
| 177 | }
|
---|