comparison: ucx/string.c
ucx/string.c
- changeset 20
- db7d9860dbbd
- child 24
- e04822101291
equal
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| 17:2e7050c3a18e | 20:db7d9860dbbd |
|---|---|
| 1 /* | |
| 2 * File: sstring.c | |
| 3 * Author: olaf | |
| 4 * | |
| 5 * Created on 17. Juni 2010, 13:27 | |
| 6 */ | |
| 7 | |
| 8 #include <stdlib.h> | |
| 9 #include <string.h> | |
| 10 #include <stdarg.h> | |
| 11 | |
| 12 #include "string.h" | |
| 13 | |
| 14 sstr_t sstr (char *s) { | |
| 15 sstr_t string; | |
| 16 string.ptr = s; | |
| 17 string.length = strlen(s); | |
| 18 return string; | |
| 19 } | |
| 20 | |
| 21 sstr_t sstrn (char *s, size_t n) { | |
| 22 sstr_t string; | |
| 23 string.ptr = s; | |
| 24 string.length = n; | |
| 25 return string; | |
| 26 } | |
| 27 | |
| 28 size_t sstrnlen (size_t n, sstr_t s, ...) { | |
| 29 va_list ap; | |
| 30 size_t size = s.length; | |
| 31 va_start(ap, s); | |
| 32 | |
| 33 for (int i=0;i<n-1;i++) { | |
| 34 sstr_t str = va_arg(ap, sstr_t); | |
| 35 size += str.length; | |
| 36 } | |
| 37 | |
| 38 return size; | |
| 39 } | |
| 40 | |
| 41 sstr_t sstrcat (sstr_t s, ...) { | |
| 42 va_list ap; | |
| 43 va_start(ap, s); | |
| 44 s.ptr[0] = 0; | |
| 45 | |
| 46 sstr_t str = va_arg (ap, sstr_t); | |
| 47 while (str.ptr != NULL) { | |
| 48 s.ptr = strncat (s.ptr, str.ptr, s.length); | |
| 49 str = va_arg (ap, sstr_t); | |
| 50 } | |
| 51 | |
| 52 return s; | |
| 53 } | |
| 54 | |
| 55 sstr_t sstrncat (size_t n, sstr_t s, sstr_t c1, ...) { | |
| 56 va_list ap; | |
| 57 va_start(ap, c1); | |
| 58 s.ptr[0] = 0; | |
| 59 | |
| 60 s.ptr = strncat (s.ptr, c1.ptr, s.length); | |
| 61 for (int i=0;i<n-1;i++) { | |
| 62 sstr_t str = va_arg (ap, sstr_t); | |
| 63 s.ptr = strncat (s.ptr, str.ptr, s.length); | |
| 64 } | |
| 65 | |
| 66 return s; | |
| 67 } | |
| 68 | |
| 69 sstr_t sstrsubs (sstr_t s, size_t start) { | |
| 70 return sstrsubsl (s, start, s.length-start); | |
| 71 } | |
| 72 | |
| 73 sstr_t sstrsubsl (sstr_t s, size_t start, size_t length) { | |
| 74 sstr_t new_sstr; | |
| 75 if (start < 0 || start >= s.length || length < 0) { | |
| 76 return s; | |
| 77 } | |
| 78 if (length > s.length-start) { | |
| 79 length = s.length-start; | |
| 80 } | |
| 81 new_sstr.ptr = &s.ptr[start]; | |
| 82 new_sstr.length = length; | |
| 83 return new_sstr; | |
| 84 } | |
| 85 | |
| 86 int sstrcmp(sstr_t s1, sstr_t s2) { | |
| 87 return strncmp(s1.ptr, s2.ptr, s1.length>s2.length ? s2.length: s1.length); | |
| 88 } | |
| 89 | |
| 90 sstr_t sstrdub(sstr_t s) { | |
| 91 sstr_t newstring; | |
| 92 newstring.ptr = malloc(s.length + 1); | |
| 93 newstring.length = s.length; | |
| 94 newstring.ptr[newstring.length] = 0; | |
| 95 | |
| 96 memcpy(newstring.ptr, s.ptr, s.length); | |
| 97 | |
| 98 return newstring; | |
| 99 } |
