52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
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*
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* Copyright 2023 Oleg Borodin <borodin@unix7.org>
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <cstring.h>
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#define INIT_CAPA 128
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/* String container */
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void* cstring_init(cstring_t* str) {
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size_t memsize = (INIT_CAPA + 1)*sizeof(char);
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str->data = malloc(memsize);
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if (str->data == NULL) return NULL;
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//memset(str->data, '\0', memsize);
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str->capa = INIT_CAPA;
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str->size = 0;
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str->data[str->size] = '\0';
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return str->data;
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}
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void* cstring_append(cstring_t* str, char* add) {
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size_t addsize = strlen(add);
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size_t newsize = str->size + addsize;
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if (newsize > str->capa) {
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size_t newcapa = (str->capa*24)/18 + addsize*3;
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char* newstr = realloc(str->data, (newcapa + 1)*sizeof(char));
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if (newstr == NULL) return NULL;
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str->data = newstr;
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str->capa = newcapa;
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}
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memcpy(&(str->data[str->size]), add, addsize);
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str->data[newsize] = '\0';
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str->size = newsize;
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return str->data;
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}
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char* cstring_getref(cstring_t* str) {
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return str->data;
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}
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void cstring_destroy(cstring_t* str) {
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if (str == NULL) return;
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free(str->data);
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}
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