comparison: src/string.c
src/string.c
- changeset 579
- bbc46dcd5255
- parent 576
- ba0c4ff6698e
- child 580
- aac47db8da0b
equal
deleted
inserted
replaced
| 578:0b2c0cb280a9 | 579:bbc46dcd5255 |
|---|---|
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 26 * POSSIBILITY OF SUCH DAMAGE. | 26 * POSSIBILITY OF SUCH DAMAGE. |
| 27 */ | 27 */ |
| 28 | 28 |
| 29 #include "cx/string.h" | 29 #include "cx/string.h" |
| 30 #include "cx/utils.h" | |
| 31 | |
| 32 #include <string.h> | |
| 33 #include <stdarg.h> | |
| 34 #include <stdint.h> | |
| 35 | |
| 36 cxmutstr cx_mutstr(char *cstring) { | |
| 37 return (cxmutstr) {cstring, strlen(cstring)}; | |
| 38 } | |
| 39 | |
| 40 cxmutstr cx_mutstrn( | |
| 41 char *cstring, | |
| 42 size_t length | |
| 43 ) { | |
| 44 return (cxmutstr) {cstring, length}; | |
| 45 } | |
| 46 | |
| 47 cxstring cx_str(const char *cstring) { | |
| 48 return (cxstring) {cstring, strlen(cstring)}; | |
| 49 } | |
| 50 | |
| 51 cxstring cx_strn( | |
| 52 const char *cstring, | |
| 53 size_t length | |
| 54 ) { | |
| 55 return (cxstring) {cstring, length}; | |
| 56 } | |
| 57 | |
| 58 cxstring cx_strcast(cxmutstr str) { | |
| 59 return (cxstring) {str.ptr, str.length}; | |
| 60 } | |
| 61 | |
| 62 void cx_strfree(cxmutstr *str) { | |
| 63 free(str->ptr); | |
| 64 str->ptr = NULL; | |
| 65 str->length = 0; | |
| 66 } | |
| 67 | |
| 68 size_t cx_strlen( | |
| 69 size_t count, | |
| 70 ... | |
| 71 ) { | |
| 72 if (count == 0) return 0; | |
| 73 | |
| 74 va_list ap; | |
| 75 va_start(ap, count); | |
| 76 size_t size = 0; | |
| 77 cx_for_n(i, count) { | |
| 78 cxstring str = va_arg(ap, cxstring); | |
| 79 size += str.length; | |
| 80 } | |
| 81 va_end(ap); | |
| 82 | |
| 83 return size; | |
| 84 } | |
| 85 | |
| 86 cxmutstr cx_strcat_a( | |
| 87 CxAllocator *alloc, | |
| 88 size_t count, | |
| 89 ... | |
| 90 ) { | |
| 91 cxstring *strings = calloc(count, sizeof(cxstring)); | |
| 92 if (!strings) abort(); | |
| 93 | |
| 94 va_list ap; | |
| 95 va_start(ap, count); | |
| 96 | |
| 97 // get all args and overall length | |
| 98 size_t slen = 0; | |
| 99 cx_for_n(i, count) { | |
| 100 cxstring s = va_arg (ap, cxstring); | |
| 101 strings[i] = s; | |
| 102 slen += s.length; | |
| 103 } | |
| 104 | |
| 105 // create new string | |
| 106 cxmutstr result; | |
| 107 result.ptr = cxMalloc(alloc, slen + 1); | |
| 108 result.length = slen; | |
| 109 if (result.ptr == NULL) abort(); | |
| 110 | |
| 111 // concatenate strings | |
| 112 size_t pos = 0; | |
| 113 cx_for_n(i, count) { | |
| 114 cxstring s = strings[i]; | |
| 115 memcpy(result.ptr + pos, s.ptr, s.length); | |
| 116 pos += s.length; | |
| 117 } | |
| 118 | |
| 119 // terminate string | |
| 120 result.ptr[result.length] = '\0'; | |
| 121 | |
| 122 // free temporary array | |
| 123 free(strings); | |
| 124 | |
| 125 return result; | |
| 126 } | |
| 127 | |
| 128 | |
| 129 |
