nuclear@3: #include <stdio.h>
nuclear@2: #include <stdlib.h>
nuclear@2: #include <string.h>
nuclear@3: #include <errno.h>
nuclear@2: #include "scene.h"
nuclear@2: #include "dynarr.h"
nuclear@2: 
nuclear@2: struct scenefile {
nuclear@2: 	struct mesh **mesh;
nuclear@2: };
nuclear@2: 
nuclear@3: struct scnfile_io {
nuclear@3: 	void *uptr;	/* user-data */
nuclear@3: 
nuclear@3: 	size_t (*read)(void *buf, size_t bytes, void *uptr);
nuclear@3: 	size_t (*write)(void *buf, size_t bytes, void *uptr);
nuclear@3: 	long (*seek)(long offs, int whence, void *uptr);
nuclear@3: };
nuclear@3: 
nuclear@3: static size_t def_read(void *buf, size_t bytes, void *uptr);
nuclear@3: static size_t def_write(void *buf, size_t bytes, void *uptr);
nuclear@3: static long def_seek(long offset, int whence, void *uptr);
nuclear@3: 
nuclear@3: 
nuclear@2: int scnfile_init(struct scenefile *scn)
nuclear@2: {
nuclear@2: 	if(!(scn->mesh = dynarr_alloc(0, sizeof *scn->mesh))) {
nuclear@2: 		return -1;
nuclear@2: 	}
nuclear@2: 	return 0;
nuclear@2: }
nuclear@2: 
nuclear@2: void scnfile_destroy(struct scenefile *scn)
nuclear@2: {
nuclear@2: 	int i, num_meshes = scnfile_count(scn);
nuclear@2: 
nuclear@2: 	for(i=0; i<num_meshes; i++) {
nuclear@2: 		mesh_destroy(scn->mesh[i]);
nuclear@2: 		free(scn->mesh[i]);
nuclear@2: 	}
nuclear@2: 	dynarr_free(scn->mesh);
nuclear@2: }
nuclear@2: 
nuclear@2: struct scenefile *scnfile_create(void)
nuclear@2: {
nuclear@2: 	struct scenefile *scn;
nuclear@2: 
nuclear@2: 	if(!(scn = malloc(sizeof *scn))) {
nuclear@2: 		return 0;
nuclear@2: 	}
nuclear@2: 	if(scnfile_init(scn) == -1) {
nuclear@2: 		free(scn);
nuclear@2: 		return 0;
nuclear@2: 	}
nuclear@2: 	return scn;
nuclear@2: }
nuclear@2: 
nuclear@2: void scnfile_free(struct scenefile *scn)
nuclear@2: {
nuclear@2: 	scnfile_destroy(scn);
nuclear@2: 	free(scn);
nuclear@2: }
nuclear@2: 
nuclear@2: 
nuclear@2: int scnfile_add_mesh(struct scenefile *scn, struct mesh *m)
nuclear@2: {
nuclear@2: 	void *tmp;
nuclear@2: 	if(!(tmp = dynarr_push(scn->mesh, m))) {
nuclear@2: 		return -1;
nuclear@2: 	}
nuclear@2: 	scn->mesh = tmp;
nuclear@2: 	return 0;
nuclear@2: }
nuclear@2: 
nuclear@2: int scnfile_load(struct scenefile *scn, const char *fname)
nuclear@2: {
nuclear@3: 	FILE *fp;
nuclear@3: 	int res;
nuclear@3: 
nuclear@3: 	if(!(fp = fopen(fname, "rb"))) {
nuclear@3: 		fprintf(stderr, "scenefile: failed to load: %s: %s\n", fname, strerror(errno));
nuclear@3: 		return -1;
nuclear@3: 	}
nuclear@3: 	res = scnfile_read_file(scn, fp);
nuclear@3: 	fclose(fp);
nuclear@3: 	return res;
nuclear@3: }
nuclear@3: 
nuclear@3: int scnfile_read_file(struct scenefile *scn, FILE *fp)
nuclear@3: {
nuclear@3: 	struct scnfile_io io = {0, def_read, def_write, def_seek};
nuclear@3: 	io.uptr = fp;
nuclear@3: 	return scnfile_read(scn, &io);
nuclear@3: }
nuclear@3: 
nuclear@3: int scnfile_read(struct scenefile *scn, struct scnfile_io *io)
nuclear@3: {
nuclear@2: 	return -1;	/* TODO */
nuclear@2: }
nuclear@2: 
nuclear@2: int scnfile_find_mesh(struct scenefile *scn, const char *fname)
nuclear@2: {
nuclear@2: 	int i, num = scnfile_count(scn);
nuclear@2: 
nuclear@2: 	for(i=0; i<num; i++) {
nuclear@2: 		if(strcmp(mesh_get_name(scn->mesh[i]), fname) == 0) {
nuclear@2: 			return i;
nuclear@2: 		}
nuclear@2: 	}
nuclear@2: 	return -1;
nuclear@2: }
nuclear@2: 
nuclear@2: struct mesh *scnfile_mesh(struct scenefile *scn, int idx)
nuclear@2: {
nuclear@2: 	if(idx < 0 || idx >= scnfile_count(scn)) {
nuclear@2: 		return 0;
nuclear@2: 	}
nuclear@2: 	return scn->mesh[idx];
nuclear@2: }
nuclear@2: 
nuclear@2: int scnfile_count(struct scenefile *scn)
nuclear@2: {
nuclear@2: 	return dynarr_size(scn->mesh);
nuclear@2: }
nuclear@3: 
nuclear@3: 
nuclear@3: void scnfile_io_user_data(struct scnfile_io *io, void *uptr)
nuclear@3: {
nuclear@3: 	io->uptr = uptr;
nuclear@3: }
nuclear@3: 
nuclear@3: void scnfile_io_read_func(struct scnfile_io *io, size_t (*read)(void*, size_t, void*))
nuclear@3: {
nuclear@3: 	io->read = read;
nuclear@3: }
nuclear@3: 
nuclear@3: void scnfile_io_write_func(struct scnfile_io *io, size_t (*write)(void*, size_t, void*))
nuclear@3: {
nuclear@3: 	io->write = write;
nuclear@3: }
nuclear@3: 
nuclear@3: void scnfile_io_seek_func(struct scnfile_io *io, long (*seek)(long, int, void*))
nuclear@3: {
nuclear@3: 	io->seek = seek;
nuclear@3: }
nuclear@3: 
nuclear@3: 
nuclear@3: static size_t def_read(void *buf, size_t bytes, void *uptr)
nuclear@3: {
nuclear@3: 	return uptr ? fread(buf, 1, bytes, uptr) : 0;
nuclear@3: }
nuclear@3: 
nuclear@3: static size_t def_write(void *buf, size_t bytes, void *uptr)
nuclear@3: {
nuclear@3: 	return uptr ? fwrite(buf, 1, bytes, uptr) : 0;
nuclear@3: }
nuclear@3: 
nuclear@3: static long def_seek(long offset, int whence, void *uptr)
nuclear@3: {
nuclear@3: 	if(!uptr || fseek(uptr, offset, whence) == -1) {
nuclear@3: 		return -1;
nuclear@3: 	}
nuclear@3: 	return ftell(uptr);
nuclear@3: }
nuclear@3: