source: UsbWattMeter/trunk/curl-7.47.1/lib/rawstr.c@ 164

Last change on this file since 164 was 164, checked in by coas-nagasima, 6 years ago

TOPPERS/ECNLサンプルアプリ「USB充電器電力計」を追加

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
  • Property svn:mime-type set to text/x-csrc
File size: 3.7 KB
Line 
1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2015, 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 "rawstr.h"
26
27/* Portable, consistent toupper (remember EBCDIC). Do not use toupper() because
28 its behavior is altered by the current locale. */
29char Curl_raw_toupper(char in)
30{
31#if !defined(CURL_DOES_CONVERSIONS)
32 if(in >= 'a' && in <= 'z')
33 return (char)('A' + in - 'a');
34#else
35 switch (in) {
36 case 'a':
37 return 'A';
38 case 'b':
39 return 'B';
40 case 'c':
41 return 'C';
42 case 'd':
43 return 'D';
44 case 'e':
45 return 'E';
46 case 'f':
47 return 'F';
48 case 'g':
49 return 'G';
50 case 'h':
51 return 'H';
52 case 'i':
53 return 'I';
54 case 'j':
55 return 'J';
56 case 'k':
57 return 'K';
58 case 'l':
59 return 'L';
60 case 'm':
61 return 'M';
62 case 'n':
63 return 'N';
64 case 'o':
65 return 'O';
66 case 'p':
67 return 'P';
68 case 'q':
69 return 'Q';
70 case 'r':
71 return 'R';
72 case 's':
73 return 'S';
74 case 't':
75 return 'T';
76 case 'u':
77 return 'U';
78 case 'v':
79 return 'V';
80 case 'w':
81 return 'W';
82 case 'x':
83 return 'X';
84 case 'y':
85 return 'Y';
86 case 'z':
87 return 'Z';
88 }
89#endif
90
91 return in;
92}
93
94/*
95 * Curl_raw_equal() is for doing "raw" case insensitive strings. This is meant
96 * to be locale independent and only compare strings we know are safe for
97 * this. See https://daniel.haxx.se/blog/2008/10/15/strcasecmp-in-turkish/ for
98 * some further explanation to why this function is necessary.
99 *
100 * The function is capable of comparing a-z case insensitively even for
101 * non-ascii.
102 */
103
104int Curl_raw_equal(const char *first, const char *second)
105{
106 while(*first && *second) {
107 if(Curl_raw_toupper(*first) != Curl_raw_toupper(*second))
108 /* get out of the loop as soon as they don't match */
109 break;
110 first++;
111 second++;
112 }
113 /* we do the comparison here (possibly again), just to make sure that if the
114 loop above is skipped because one of the strings reached zero, we must not
115 return this as a successful match */
116 return (Curl_raw_toupper(*first) == Curl_raw_toupper(*second));
117}
118
119int Curl_raw_nequal(const char *first, const char *second, size_t max)
120{
121 while(*first && *second && max) {
122 if(Curl_raw_toupper(*first) != Curl_raw_toupper(*second)) {
123 break;
124 }
125 max--;
126 first++;
127 second++;
128 }
129 if(0 == max)
130 return 1; /* they are equal this far */
131
132 return Curl_raw_toupper(*first) == Curl_raw_toupper(*second);
133}
134
135/* Copy an upper case version of the string from src to dest. The
136 * strings may overlap. No more than n characters of the string are copied
137 * (including any NUL) and the destination string will NOT be
138 * NUL-terminated if that limit is reached.
139 */
140void Curl_strntoupper(char *dest, const char *src, size_t n)
141{
142 if(n < 1)
143 return;
144
145 do {
146 *dest++ = Curl_raw_toupper(*src);
147 } while(*src++ && --n);
148}
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