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annotate utils.c @ 40:291fefe664f2
Oops, fix previous.
| author | David A. Holland |
|---|---|
| date | Sat, 30 Mar 2013 21:48:57 -0400 |
| parents | 337110e7240a |
| children | ef8bedab8a4b |
| rev | line source |
|---|---|
| 3 | 1 /*- |
| 2 * Copyright (c) 2010 The NetBSD Foundation, Inc. | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This code is derived from software contributed to The NetBSD Foundation | |
| 6 * by David A. Holland. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * 1. Redistributions of source code must retain the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer. | |
| 13 * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 * notice, this list of conditions and the following disclaimer in the | |
| 15 * documentation and/or other materials provided with the distribution. | |
| 16 * | |
| 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | |
| 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
| 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | |
| 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 27 * POSSIBILITY OF SUCH DAMAGE. | |
| 28 */ | |
| 29 | |
| 30 #include <stdlib.h> | |
| 31 #include <string.h> | |
| 32 #include <err.h> | |
| 33 | |
| 34 #include "utils.h" | |
| 35 | |
| 16 | 36 const char ws[] = |
| 37 " \t\f\v" | |
| 38 ; | |
| 39 const char alnum[] = | |
| 40 "0123456789" | |
| 41 "abcdefghijklmnopqrstuvwxyz" | |
| 42 "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
| 43 "_" | |
| 44 ; | |
| 45 | |
| 3 | 46 void * |
| 47 domalloc(size_t len) | |
| 48 { | |
| 49 void *ret; | |
| 50 | |
| 51 ret = malloc(len); | |
| 52 if (ret == NULL) { | |
| 53 warnx("Out of memory"); | |
| 54 die(); | |
| 55 } | |
| 56 return ret; | |
| 57 } | |
| 58 | |
| 59 void * | |
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60 dorealloc(void *ptr, size_t oldlen, size_t newlen) |
| 3 | 61 { |
| 62 void *ret; | |
| 63 | |
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64 (void)oldlen; |
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65 ret = realloc(ptr, newlen); |
| 3 | 66 if (ret == NULL) { |
| 67 warnx("Out of memory"); | |
| 68 die(); | |
| 69 } | |
| 70 return ret; | |
| 71 } | |
| 72 | |
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73 void |
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74 dofree(void *ptr, size_t len) |
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75 { |
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76 (void)len; |
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77 free(ptr); |
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78 } |
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79 |
| 3 | 80 char * |
| 81 dostrdup(const char *s) | |
| 82 { | |
| 83 char *ret; | |
| 84 size_t len; | |
| 85 | |
| 86 len = strlen(s); | |
| 87 ret = domalloc(len+1); | |
| 88 strcpy(ret, s); | |
| 89 return ret; | |
| 90 } | |
| 91 | |
| 92 char * | |
| 93 dostrdup2(const char *s, const char *t) | |
| 94 { | |
| 95 char *ret; | |
| 96 size_t len; | |
| 97 | |
| 98 len = strlen(s) + strlen(t); | |
| 99 ret = domalloc(len+1); | |
| 100 strcpy(ret, s); | |
| 101 strcat(ret, t); | |
| 102 return ret; | |
| 103 } | |
| 104 | |
| 105 char * | |
| 106 dostrdup3(const char *s, const char *t, const char *u) | |
| 107 { | |
| 108 char *ret; | |
| 109 size_t len; | |
| 110 | |
| 111 len = strlen(s) + strlen(t) + strlen(u); | |
| 112 ret = domalloc(len+1); | |
| 113 strcpy(ret, s); | |
| 114 strcat(ret, t); | |
| 115 strcat(ret, u); | |
| 116 return ret; | |
| 117 } | |
| 118 | |
| 20 | 119 char * |
| 120 dostrndup(const char *s, size_t len) | |
| 121 { | |
| 122 char *ret; | |
| 123 | |
| 124 ret = domalloc(len+1); | |
| 125 memcpy(ret, s, len); | |
| 126 ret[len] = '\0'; | |
| 127 return ret; | |
| 128 } | |
| 129 | |
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130 void |
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131 dostrfree(char *s) |
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132 { |
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133 dofree(s, strlen(s)+1); |
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134 } |
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135 |
| 18 | 136 size_t |
| 137 notrailingws(char *buf, size_t len) | |
| 138 { | |
| 139 while (len > 0 && strchr(ws, buf[len-1])) { | |
| 140 buf[--len] = '\0'; | |
| 141 } | |
| 142 return len; | |
| 143 } | |
| 144 | |
| 145 bool | |
| 146 is_identifier(const char *str) | |
| 147 { | |
| 148 size_t len; | |
| 149 | |
| 150 len = strlen(str); | |
| 151 if (len != strspn(str, alnum)) { | |
| 152 return false; | |
| 153 } | |
| 154 if (str[0] >= '0' && str[0] <= '9') { | |
| 155 return false; | |
| 156 } | |
| 157 return true; | |
| 158 } |