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#include "fbuffer.h"
inline FBuffer *fbuffer_alloc()
{
FBuffer *fb = ALLOC(FBuffer);
memset((void *) fb, 0, sizeof(FBuffer));
fb->initial_length = FBUFFER_INITIAL_LENGTH;
return fb;
}
inline FBuffer *fbuffer_alloc_with_length(unsigned int initial_length)
{
assert(initial_length > 0);
FBuffer *fb = ALLOC(FBuffer);
memset((void *) fb, 0, sizeof(FBuffer));
fb->initial_length = initial_length;
return fb;
}
inline void fbuffer_free(FBuffer *fb)
{
if (fb->ptr) ruby_xfree(fb->ptr);
ruby_xfree(fb);
}
inline void fbuffer_clear(FBuffer *fb)
{
fb->len = 0;
}
static inline void fbuffer_inc_capa(FBuffer *fb, unsigned int requested)
{
unsigned int required;
if (!fb->ptr) {
fb->ptr = ALLOC_N(char, fb->initial_length);
fb->capa = fb->initial_length;
}
for (required = fb->capa; requested > required - fb->len; required <<= 1);
if (required > fb->capa) {
fb->ptr = (char *) REALLOC_N((long*) fb->ptr, char, required);
fb->capa = required;
}
}
inline void fbuffer_append(FBuffer *fb, const char *newstr, unsigned int len)
{
if (len > 0) {
fbuffer_inc_capa(fb, len);
memcpy(fb->ptr + fb->len, newstr, len);
fb->len += len;
}
}
inline void fbuffer_append_char(FBuffer *fb, char newchr)
{
fbuffer_inc_capa(fb, 1);
*(fb->ptr + fb->len) = newchr;
fb->len++;
}
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