comparison: src/server/sstring.c
src/server/sstring.c
- changeset 14
- b8bf95b39952
- parent 13
- 1fdbf4170ef4
- child 15
- cff9c4101dd7
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| 13:1fdbf4170ef4 | 14:b8bf95b39952 |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2011 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include <stdlib.h> | |
| 30 #include <string.h> | |
| 31 #include <stdarg.h> | |
| 32 | |
| 33 #include "sstring.h" | |
| 34 | |
| 35 sstr_t sstr (char *s) { | |
| 36 sstr_t string; | |
| 37 string.ptr = s; | |
| 38 string.length = strlen(s); | |
| 39 return string; | |
| 40 } | |
| 41 | |
| 42 sstr_t sstrn (char *s, size_t n) { | |
| 43 sstr_t string; | |
| 44 string.ptr = s; | |
| 45 string.length = n; | |
| 46 return string; | |
| 47 } | |
| 48 | |
| 49 size_t sstrnlen (size_t n, sstr_t s, ...) { | |
| 50 va_list ap; | |
| 51 size_t size = s.length; | |
| 52 va_start(ap, s); | |
| 53 | |
| 54 for (int i=0;i<n-1;i++) { | |
| 55 sstr_t str = va_arg(ap, sstr_t); | |
| 56 size += str.length; | |
| 57 } | |
| 58 | |
| 59 return size; | |
| 60 } | |
| 61 | |
| 62 sstr_t sstrcat (sstr_t s, ...) { | |
| 63 va_list ap; | |
| 64 va_start(ap, s); | |
| 65 s.ptr[0] = 0; | |
| 66 | |
| 67 sstr_t str = va_arg (ap, sstr_t); | |
| 68 while (str.ptr != NULL) { | |
| 69 s.ptr = strncat (s.ptr, str.ptr, s.length); | |
| 70 str = va_arg (ap, sstr_t); | |
| 71 } | |
| 72 | |
| 73 return s; | |
| 74 } | |
| 75 | |
| 76 sstr_t sstrncat (size_t n, sstr_t s, sstr_t c1, ...) { | |
| 77 va_list ap; | |
| 78 va_start(ap, c1); | |
| 79 s.ptr[0] = 0; | |
| 80 | |
| 81 s.ptr = strncat (s.ptr, c1.ptr, s.length); | |
| 82 for (int i=0;i<n-1;i++) { | |
| 83 sstr_t str = va_arg (ap, sstr_t); | |
| 84 s.ptr = strncat (s.ptr, str.ptr, s.length); | |
| 85 } | |
| 86 | |
| 87 return s; | |
| 88 } | |
| 89 | |
| 90 sstr_t sstrsubs (sstr_t s, size_t start) { | |
| 91 return sstrsubsl (s, start, s.length-start); | |
| 92 } | |
| 93 | |
| 94 sstr_t sstrsubsl (sstr_t s, size_t start, size_t length) { | |
| 95 sstr_t new_sstr; | |
| 96 if (start < 0 || start >= s.length || length < 0) { | |
| 97 return s; | |
| 98 } | |
| 99 if (length > s.length-start) { | |
| 100 length = s.length-start; | |
| 101 } | |
| 102 new_sstr.ptr = &s.ptr[start]; | |
| 103 new_sstr.length = length; | |
| 104 return new_sstr; | |
| 105 } | |
| 106 | |
| 107 int sstrcmp(sstr_t s1, sstr_t s2) { | |
| 108 return strncmp(s1.ptr, s2.ptr, s1.length>s2.length ? s2.length: s1.length); | |
| 109 } | |
| 110 | |
| 111 sstr_t sstrdub(sstr_t s) { | |
| 112 sstr_t newstring; | |
| 113 newstring.ptr = malloc(s.length + 1); | |
| 114 newstring.length = s.length; | |
| 115 newstring.ptr[newstring.length] = 0; | |
| 116 | |
| 117 memcpy(newstring.ptr, s.ptr, s.length); | |
| 118 | |
| 119 return newstring; | |
| 120 } |
