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#include "buffers.h"
#include "buffer.h"
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
struct buffer_entry {
struct buffer buffer;
bool empty;
};
void buffers_init(struct buffers *buffers, uint32_t initial_capacity) {
VEC_INIT(&buffers->buffers, initial_capacity);
VEC_INIT(&buffers->add_hooks, 32);
VEC_INIT(&buffers->remove_hooks, 32);
}
struct buffer *buffers_add(struct buffers *buffers, struct buffer buffer) {
struct buffer_entry *slot = NULL;
VEC_FOR_EACH(&buffers->buffers, struct buffer_entry * e) {
if (e->empty) {
slot = e;
}
}
if (slot == NULL) {
VEC_APPEND(&buffers->buffers, struct buffer_entry * new);
slot = new;
}
slot->buffer = buffer;
slot->empty = false;
VEC_FOR_EACH(&buffers->add_hooks, struct buffers_hook * hook) {
hook->callback(&slot->buffer, hook->userdata);
}
return &slot->buffer;
}
uint32_t buffers_add_add_hook(struct buffers *buffers, buffers_hook_cb callback,
void *userdata) {
VEC_PUSH(&buffers->add_hooks, ((struct buffers_hook){
.callback = callback,
.userdata = userdata,
}));
return VEC_SIZE(&buffers->add_hooks) - 1;
}
uint32_t buffers_add_remove_hook(struct buffers *buffers,
buffers_hook_cb callback, void *userdata) {
VEC_PUSH(&buffers->remove_hooks, ((struct buffers_hook){
.callback = callback,
.userdata = userdata,
}));
return VEC_SIZE(&buffers->remove_hooks) - 1;
}
struct buffer *buffers_find(struct buffers *buffers, const char *name) {
VEC_FOR_EACH(&buffers->buffers, struct buffer_entry * e) {
if (!e->empty && strcmp(name, e->buffer.name) == 0) {
return &e->buffer;
}
}
return NULL;
}
struct buffer *buffers_find_by_filename(struct buffers *buffers,
const char *path) {
VEC_FOR_EACH(&buffers->buffers, struct buffer_entry * e) {
if (!e->empty && e->buffer.filename != NULL &&
strcmp(path, e->buffer.filename) == 0) {
return &e->buffer;
}
}
return NULL;
}
bool buffers_remove(struct buffers *buffers, const char *name) {
struct buffer_entry *buf_entry = NULL;
VEC_FOR_EACH(&buffers->buffers, struct buffer_entry * e) {
if (!e->empty && strcmp(name, e->buffer.name) == 0) {
buf_entry = e;
}
}
if (buf_entry == NULL) {
return false;
}
VEC_FOR_EACH(&buffers->remove_hooks, struct buffers_hook * hook) {
hook->callback(&buf_entry->buffer, hook->userdata);
}
buf_entry->empty = true;
buffer_destroy(&buf_entry->buffer);
return true;
}
void buffers_for_each(struct buffers *buffers, buffers_hook_cb callback,
void *userdata) {
VEC_FOR_EACH(&buffers->buffers, struct buffer_entry * e) {
if (!e->empty) {
callback(&e->buffer, userdata);
}
}
}
uint32_t buffers_num_buffers(struct buffers *buffers) {
return VEC_SIZE(&buffers->buffers);
}
struct buffer *buffers_first(struct buffers *buffers) {
return buffers_num_buffers(buffers) > 0
? &VEC_ENTRIES(&buffers->buffers)[0].buffer
: NULL;
}
void buffers_destroy(struct buffers *buffers) {
VEC_FOR_EACH(&buffers->buffers, struct buffer_entry * e) {
if (!e->empty) {
buffer_destroy(&e->buffer);
e->empty = true;
}
}
VEC_DESTROY(&buffers->buffers);
VEC_DESTROY(&buffers->add_hooks);
VEC_DESTROY(&buffers->remove_hooks);
}
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