cstring.c

   1 #include <string.h> // strlen
   2 #include <stdlib.h> // malloc, realloc
   3
   4 #include "include/cstring.h"
   5
   6 cstring_t *cstring_init() {
   7     cstring_t *x = malloc(sizeof(cstring_t));
   8     x->text = (void*)0;
   9     x->size = x->alloc = 0;
  10     x->expand = cstring_expand;
  11     x->expand_arr = cstring_expand_arr;
  12     x->reset = cstring_reset;
  13     x->delete = cstring_delete;
  14     return x;
  15 }
  16
  17 void cstring_expand(cstring_t *self, char x) {
  18     if(self->size + sizeof(x) + sizeof(char) > self->alloc) {
  19         self->alloc += (REALLOC_ADD * sizeof(char));
  20         self->text = realloc(self->text, self->alloc);
  21     }
  22     self->text[self->size] = x;
  23     self->text[self->size+1] = '\0';
  24     self->size = strlen(self->text);
  25 }
  26
  27 void cstring_expand_arr(cstring_t *self, char *x) {
  28     if(self->size + strlen(x) + sizeof(char) > self->alloc) {
  29         self->alloc += (REALLOC_ADD * sizeof(char));
  30         self->text = realloc(self->text, self->alloc);
  31     }
  32     self->text = strcat(self->text, x);
  33     self->size = strlen(self->text);
  34 }
  35
  36 void cstring_reset(cstring_t *self) {
  37     free(self->text);
  38     self->text = (void*)0;
  39     self->size = self->alloc = 0;
  40 }
  41
  42 void cstring_delete(cstring_t *self) {
  43     free(self->text);
  44     free(self);
  45 }
  46