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#include "str.h"
#include "../lua.h"
#include "../util.h"
#define alloc_buffer 64
str* str_initl(const char* init, size_t len){
str* s = malloc(sizeof * s);
s->_bytes = len + 1 + alloc_buffer;
s->c = malloc(s->_bytes);
if(s->c == NULL) p_fatal("failed to allocate string\n");
s->len = len ;
memcpy(s->c, init, (len + 1) * sizeof * init);
return s;
}
str* str_init(const char* init){
return str_initl(init, strlen(init));
}
void str_free(str* s){
free(s->c);
return free(s);
}
void str_push(str* s, const char* insert){
s->len += strlen(insert);
if(s->len + 1 >= s->_bytes)
s->c = realloc(s->c, s->_bytes = s->len + 1 + alloc_buffer);
strcat(s->c, insert);
}
void str_pushl(str* s, const char* insert, size_t l){
if(s->len + l >= s->_bytes)
s->c = realloc(s->c, s->_bytes = s->len + l + alloc_buffer);
//strcat(s->c, insert);
for(int i = 0; i != l; i++){
s->c[i + s->len] = insert[i];
}
s->len += l;
s->c[s->len] = '\0';
}
void str_clear(str* s){
memset(s->c, 0, s->len);
s->len = 0;
}
void str_popf(str* s, int len){
memmove(s->c, s->c + len, s->len -= len);
s->c[s->len] = 0;
}
void str_popb(str* s, int len){
s->len -= len;
s->len = s->len > 0 ? s->len : 0;
s->c[s->len] = 0;
}
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