comparison: misc.c
misc.c
- changeset 0
- 86b7f6f9c5c0
- child 1
- 6e704fc09528
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| -1:000000000000 | 0:86b7f6f9c5c0 |
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| 1 /* | |
| 2 * libtu/misc.c | |
| 3 * | |
| 4 * Copyright (c) Tuomo Valkonen 1999-2000. | |
| 5 * | |
| 6 * This file is distributed under the terms of the "Artistic License". | |
| 7 * See the included file LICENSE for details. | |
| 8 */ | |
| 9 | |
| 10 #include <stdlib.h> | |
| 11 #include <stdio.h> | |
| 12 #include <string.h> | |
| 13 #include <malloc.h> | |
| 14 | |
| 15 #include "include/misc.h" | |
| 16 | |
| 17 | |
| 18 void *malloczero(int size) | |
| 19 { | |
| 20 void *p=malloc(size); | |
| 21 | |
| 22 if(p!=NULL) | |
| 23 memset(p, 0, size); | |
| 24 | |
| 25 return p; | |
| 26 } | |
| 27 | |
| 28 | |
| 29 void *remalloczero(void *ptr, int oldsize, int newsize) | |
| 30 { | |
| 31 void *p=NULL; | |
| 32 | |
| 33 if(newsize!=0){ | |
| 34 p=malloc(newsize); | |
| 35 | |
| 36 if(p==NULL) | |
| 37 return NULL; | |
| 38 | |
| 39 memset(p, 0, newsize); | |
| 40 | |
| 41 if(ptr!=NULL && oldsize<newsize) | |
| 42 memcpy(p, ptr, oldsize); | |
| 43 } | |
| 44 | |
| 45 if(ptr!=NULL) | |
| 46 free(ptr); | |
| 47 | |
| 48 return p; | |
| 49 } | |
| 50 | |
| 51 | |
| 52 char *scopy(const char *p) | |
| 53 { | |
| 54 char*pn; | |
| 55 size_t l=strlen(p); | |
| 56 | |
| 57 pn=(char*)malloc(l+1); | |
| 58 | |
| 59 if(pn==NULL) | |
| 60 return NULL; | |
| 61 | |
| 62 memcpy(pn, p, l+1); | |
| 63 | |
| 64 return pn; | |
| 65 } | |
| 66 | |
| 67 | |
| 68 char *scat(const char *p1, const char *p2) | |
| 69 { | |
| 70 size_t l1, l2; | |
| 71 char*pn; | |
| 72 | |
| 73 l1=strlen(p1); | |
| 74 l2=strlen(p2); | |
| 75 | |
| 76 pn=(char*)malloc(l1+l2+1); | |
| 77 | |
| 78 if(pn==NULL) | |
| 79 return NULL; | |
| 80 | |
| 81 memcpy(pn, p1, l1); | |
| 82 memcpy(pn+l1, p2, l2+1); | |
| 83 | |
| 84 return pn; | |
| 85 } | |
| 86 | |
| 87 | |
| 88 char *scat3(const char *p1, const char *p2, const char *p3) | |
| 89 { | |
| 90 size_t l1, l2, l3; | |
| 91 char *pn; | |
| 92 | |
| 93 l1=strlen(p1); | |
| 94 l2=strlen(p2); | |
| 95 l3=strlen(p3); | |
| 96 | |
| 97 pn=(char*)malloc(l1+l2+l3+1); | |
| 98 | |
| 99 if(pn==NULL) | |
| 100 return NULL; | |
| 101 | |
| 102 memcpy(pn, p1, l1); | |
| 103 memcpy(pn+l1, p2, l2); | |
| 104 memcpy(pn+l1+l2, p3, l3+1); | |
| 105 | |
| 106 return pn; | |
| 107 } | |
| 108 | |
| 109 | |
| 110 /* */ | |
| 111 | |
| 112 | |
| 113 const char *simple_basename(const char *name) | |
| 114 { | |
| 115 const char *p; | |
| 116 | |
| 117 p=name+strlen(name)-1; | |
| 118 | |
| 119 /* Skip any trailing slashes */ | |
| 120 while(*p=='/'){ | |
| 121 /* root? */ | |
| 122 if(p==name) | |
| 123 return name; | |
| 124 p--; | |
| 125 } | |
| 126 | |
| 127 while(p!=name){ | |
| 128 if(*p=='/') | |
| 129 return p+1; | |
| 130 p--; | |
| 131 } | |
| 132 | |
| 133 return name; | |
| 134 } | |
| 135 | |
| 136 | |
| 137 /* */ | |
| 138 | |
| 139 | |
| 140 bool readf(FILE *f, void *buf, size_t n) | |
| 141 { | |
| 142 return fread(buf, 1, n, f)!=1; | |
| 143 } | |
| 144 | |
| 145 | |
| 146 bool writef(FILE *f, const void *buf, size_t n) | |
| 147 { | |
| 148 return fwrite(buf, 1, n, f)!=1; | |
| 149 } |
