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#include "buf.h"
bbuf* bbuf_new(int size)
{
bbuf *ret = NULL;
ret = malloc(sizeof(bbuf));
if (!ret)
{
return NULL;
}
ret->buf = malloc(size);
if (!ret->buf)
{
free(ret);
return NULL;
}
ret->buf_size = size;
ret->size = 0;
return ret;
}
//set buffer value
int bbuf_set(bbuf *a, char *val, int size)
{
if (!a)
return -1;
if (!a->buf)
return -1;
if (size<0)
return -1;
if (size > a->buf_size)
{
a->size = a->buf_size;
} else
{
a->size = size;
}
memcpy(a->buf, val, a->size);
return a->size;
}
//get copy of buffer
bbuf *bbuf_copy(bbuf *buf)
{
bbuf *ret = NULL;
if (!buf)
{
return NULL;
}
ret = malloc(sizeof(bbuf));
memcpy(ret, buf, sizeof(bbuf));
ret->buf = malloc(buf->buf_size);
if (!ret->buf)
{
free(ret);
return NULL;
}
memcpy(ret->buf, buf->buf, buf->buf_size);
ret->size = buf->size;
ret->buf_size = buf->buf_size;
return ret;
}
//get buffer from buffer, mapped pointer, plz dont modify
int bbuf_get(bbuf *buf, char **val, int *size)
{
if (!buf)
{
return -1;
}
if (!val)
{
return -1;
}
*size = buf->size;
*val = buf->buf;
return 0;
}
//resize buffer
int bbuf_realloc(bbuf *buf, int size)
{
int ret = -1;
char *ptr=NULL;
if (!buf)
return -1;
if (size < 0)
return -1;
if (buf->buf_size == size)
return size;
ret = buf->buf_size;
ptr = realloc(buf->buf, size);
if (ptr != NULL)
{
buf->buf = ptr;
ret = size;
}
return ret;
}
int bbuf_reduce(bbuf *buf)
{
printf("Not implemented\n");
return -1;
}
//increase buffer for size
int bbuf_inc(bbuf *a, char *b, int size)
{
printf("Not implemented\n");
return -1;
}
//decrease buffer for size
int bbuf_dec(bbuf *a, char *b, int size)
{
printf("Not implemented\n");
return -1;
}
int bbuf_concat(bbuf *a, bbuf *b)
{
printf("Not implemented\n");
return -1;
}
int bbuf_size(bbuf *a)
{
if (a == NULL)
{
return -1;
}
//return used size
return a->buf_size;
}
int bbuf_print(bbuf *a)
{
int i;
if (NULL == a)
{
return -1;
}
for (i=0;i<a->buf_size;i++)
{
char ch = a->buf[i];
if (isalpha(ch))
{
printf("%c",ch);
} else
{
printf(".");
}
}
return 0;
}
//free buffer
void bbuf_free(bbuf *buf)
{
if (buf == NULL)
{
return;
}
if (buf->buf != NULL)
{
memset(buf->buf, 0, buf->buf_size);
free(buf->buf);
buf->buf = NULL;
memset(buf, 0, sizeof(bbuf));
free(buf);
buf = NULL;
}
}
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