1/* Copyright (c) 2013-2015 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#include "util/vfs.h"
  7
  8#include <sys/iosupport.h>
  9
 10static bool _vdlClose(struct VDir* vd);
 11static void _vdlRewind(struct VDir* vd);
 12static struct VDirEntry* _vdlListNext(struct VDir* vd);
 13static struct VFile* _vdlOpenFile(struct VDir* vd, const char* path, int mode);
 14static struct VDir* _vdlOpenDir(struct VDir* vd, const char* path);
 15static bool _vdlDeleteFile(struct VDir* vd, const char* path);
 16
 17static const char* _vdleName(struct VDirEntry* vde);
 18static enum VFSType _vdleType(struct VDirEntry* vde);
 19
 20struct VDirEntryDevList {
 21	struct VDirEntry d;
 22	size_t index;
 23	char* name;
 24};
 25
 26struct VDirDevList {
 27	struct VDir d;
 28	struct VDirEntryDevList vde;
 29};
 30
 31struct VDir* VDeviceList() {
 32	struct VDirDevList* vd = malloc(sizeof(struct VDirDevList));
 33	if (!vd) {
 34		return 0;
 35	}
 36
 37	vd->d.close = _vdlClose;
 38	vd->d.rewind = _vdlRewind;
 39	vd->d.listNext = _vdlListNext;
 40	vd->d.openFile = _vdlOpenFile;
 41	vd->d.openDir = _vdlOpenDir;
 42	vd->d.deleteFile = _vdlDeleteFile;
 43
 44	vd->vde.d.name = _vdleName;
 45	vd->vde.d.type = _vdleType;
 46	vd->vde.index = 0;
 47	vd->vde.name = 0;
 48
 49	return &vd->d;
 50}
 51
 52static bool _vdlClose(struct VDir* vd) {
 53	struct VDirDevList* vdl = (struct VDirDevList*) vd;
 54	free(vdl->vde.name);
 55	free(vdl);
 56	return true;
 57}
 58
 59static void _vdlRewind(struct VDir* vd) {
 60	struct VDirDevList* vdl = (struct VDirDevList*) vd;
 61	free(vdl->vde.name);
 62	vdl->vde.name = 0;
 63	vdl->vde.index = 3;
 64}
 65
 66static struct VDirEntry* _vdlListNext(struct VDir* vd) {
 67	struct VDirDevList* vdl = (struct VDirDevList*) vd;
 68	if (vdl->vde.name) {
 69		++vdl->vde.index;
 70		free(vdl->vde.name);
 71		vdl->vde.name = 0;
 72	}
 73	while (vdl->vde.index < STD_MAX) {
 74		const devoptab_t *devops = devoptab_list[vdl->vde.index];
 75		if (devops->dirStateSize > 0) {
 76			vdl->vde.name = malloc(strlen(devops->name) + 3);
 77			sprintf(vdl->vde.name, "%s:", devops->name);
 78			return &vdl->vde.d;
 79		}
 80
 81		++vdl->vde.index;
 82	}
 83	return 0;
 84}
 85
 86static struct VFile* _vdlOpenFile(struct VDir* vd, const char* path, int mode) {
 87	UNUSED(vd);
 88	UNUSED(path);
 89	UNUSED(mode);
 90	return 0;
 91}
 92
 93static struct VDir* _vdlOpenDir(struct VDir* vd, const char* path) {
 94	UNUSED(vd);
 95	return VDirOpen(path);
 96}
 97
 98static bool _vdlDeleteFile(struct VDir* vd, const char* path) {
 99	UNUSED(vd);
100	UNUSED(path);
101	return false;
102}
103
104static const char* _vdleName(struct VDirEntry* vde) {
105	struct VDirEntryDevList* vdle = (struct VDirEntryDevList*) vde;
106	return vdle->name;
107}
108
109static enum VFSType _vdleType(struct VDirEntry* vde) {
110	UNUSED(vde);
111	return VFS_DIRECTORY;
112}