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fs.c
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fs.c
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#include "fs.h"
static void duv_push_timespec_table(duk_context *ctx, const uv_timespec_t* t) {
duk_push_object(ctx);
duk_push_uint(ctx, t->tv_sec);
duk_put_prop_string(ctx, -2, "sec");
duk_push_uint(ctx, t->tv_nsec);
duk_put_prop_string(ctx, -2, "nsec");
}
static void duv_push_stats_table(duk_context *ctx, const uv_stat_t* s) {
const char* type = NULL;
duk_push_object(ctx);
duk_push_uint(ctx, s->st_mode);
duk_put_prop_string(ctx, -2, "mode");
duk_push_uint(ctx, s->st_uid);
duk_put_prop_string(ctx, -2, "uid");
duk_push_uint(ctx, s->st_gid);
duk_put_prop_string(ctx, -2, "gid");
duk_push_uint(ctx, s->st_size);
duk_put_prop_string(ctx, -2, "size");
duv_push_timespec_table(ctx, &s->st_atim);
duk_put_prop_string(ctx, -2, "atime");
duv_push_timespec_table(ctx, &s->st_mtim);
duk_put_prop_string(ctx, -2, "mtime");
duv_push_timespec_table(ctx, &s->st_ctim);
duk_put_prop_string(ctx, -2, "ctime");
if (S_ISREG(s->st_mode)) {
type = "file";
}
else if (S_ISDIR(s->st_mode)) {
type = "directory";
}
else if (S_ISLNK(s->st_mode)) {
type = "link";
}
else if (S_ISFIFO(s->st_mode)) {
type = "fifo";
}
#ifdef S_ISSOCK
else if (S_ISSOCK(s->st_mode)) {
type = "socket";
}
#endif
else if (S_ISCHR(s->st_mode)) {
type = "char";
}
else if (S_ISBLK(s->st_mode)) {
type = "block";
}
if (type) {
duk_push_string(ctx, type);
duk_put_prop_string(ctx, -2, "type");
}
}
static int duv_string_to_flags(duk_context *ctx, const char* string) {
bool read = false;
bool write = false;
int flags = 0;
while (string && string[0]) {
switch (string[0]) {
case 'r': read = true; break;
case 'w': write = true; flags |= O_TRUNC | O_CREAT; break;
case 'a': write = true; flags |= O_APPEND | O_CREAT; break;
case '+': read = true; write = true; break;
case 'x': flags |= O_EXCL; break;
#ifndef _WIN32
case 's': flags |= O_SYNC; break;
#endif
default:
duk_error(ctx, DUK_ERR_TYPE_ERROR, "Unknown file open flag '%s'", string);
return 0;
}
string++;
}
flags |= read ? (write ? O_RDWR : O_RDONLY) :
(write ? O_WRONLY : 0);
return flags;
}
static void duv_push_error_result(duk_context *ctx, uv_fs_t* req) {
if (req->path) {
duk_push_error_object(ctx, DUK_ERR_ERROR, "%s: %s: %s", uv_err_name(req->result), uv_strerror(req->result), req->path);
}
else {
duk_push_error_object(ctx, DUK_ERR_ERROR, "%s: %s", uv_err_name(req->result), uv_strerror(req->result));
}
}
/* Processes a result and pushes the data onto the stack
returns the number of items pushed */
static void duv_push_fs_result(duk_context *ctx, uv_fs_t* req) {
duv_req_t* data = req->data;
char* chunk;
switch (req->fs_type) {
case UV_FS_CLOSE:
case UV_FS_RENAME:
case UV_FS_UNLINK:
case UV_FS_RMDIR:
case UV_FS_MKDIR:
case UV_FS_FTRUNCATE:
case UV_FS_FSYNC:
case UV_FS_FDATASYNC:
case UV_FS_LINK:
case UV_FS_SYMLINK:
case UV_FS_CHMOD:
case UV_FS_FCHMOD:
case UV_FS_CHOWN:
case UV_FS_FCHOWN:
case UV_FS_UTIME:
case UV_FS_FUTIME:
duk_push_boolean(ctx, 1);
break;
case UV_FS_OPEN:
case UV_FS_SENDFILE:
case UV_FS_WRITE:
duk_push_uint(ctx, req->result);
break;
case UV_FS_STAT:
case UV_FS_LSTAT:
case UV_FS_FSTAT:
duv_push_stats_table(ctx, &req->statbuf);
break;
case UV_FS_READLINK:
duk_push_string(ctx, (char*)req->ptr);
break;
case UV_FS_MKDTEMP:
duk_push_string(ctx, req->path);
break;
case UV_FS_READ:
chunk = duk_push_fixed_buffer(ctx, req->result);
memcpy(chunk, data->data, req->result);
break;
case UV_FS_SCANDIR:
// Expose the userdata for the request.
duv_push_ref(ctx, data->req_ref);
break;
default:
duk_push_error_object(ctx, DUK_ERR_TYPE_ERROR, "UNKNOWN FS TYPE %d\n", req->fs_type);
break;
}
}
static void duv_fs_cb(uv_fs_t* req) {
duk_context *ctx = req->loop->data;
int nargs;
if (req->result < 0) {
duk_push_null(ctx);
duv_push_error_result(ctx, req);
nargs = 2;
}
else {
duv_push_fs_result(ctx, req);
nargs = 1;
}
duv_fulfill_req(ctx, (uv_req_t*)req, nargs);
if (req->fs_type != UV_FS_SCANDIR) {
req->data = duv_cleanup_req(ctx, req->data);
uv_fs_req_cleanup(req);
}
}
#define FS_CALL(func, req, ...) { \
int ret, sync; \
duv_req_t* data = req->data; \
sync = data->callback_ref == 0; \
ret = uv_fs_##func(duv_loop(ctx), req, __VA_ARGS__, \
sync ? NULL : duv_fs_cb); \
if (sync || ret < 0) { \
if (req->result < 0) { \
duv_push_error_result(ctx, req); \
} \
else { \
duv_push_fs_result(ctx, req); \
} \
if (req->fs_type != UV_FS_SCANDIR) { \
duv_cleanup_req(ctx, req->data); \
req->data = NULL; \
uv_fs_req_cleanup(req); \
} \
if (req->result < 0) { \
duk_throw(ctx); \
} \
return 1; \
} \
duv_push_ref(ctx, data->req_ref); \
return 1; \
}
duk_ret_t duv_fs_close(duk_context *ctx) {
uv_file file = duk_require_int(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(close, req, file);
}
duk_ret_t duv_fs_open(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
int flags = duv_string_to_flags(ctx, duk_require_string(ctx, 1));
int mode = duk_require_uint(ctx, 2);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 3);
FS_CALL(open, req, path, flags, mode);
}
duk_ret_t duv_fs_read(duk_context *ctx) {
uv_file file = duk_require_uint(ctx, 0);
int64_t len = duk_require_uint(ctx, 1);
int64_t offset = duk_require_uint(ctx, 2);
uv_buf_t buf;
uv_fs_t* req;
buf = uv_buf_init(duk_alloc(ctx, len), len);
req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 3);
// TODO: find out why we can't just use req->ptr for the base
((duv_req_t*)req->data)->data = buf.base;
FS_CALL(read, req, file, &buf, 1, offset);
}
duk_ret_t duv_fs_unlink(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(unlink, req, path);
}
duk_ret_t duv_fs_write(duk_context *ctx) {
uv_file file;
uv_buf_t buf;
int64_t offset;
duv_req_t *data;
uv_fs_t* req;
dschema_check(ctx, (const duv_schema_entry[]){
{"fd", duv_is_fd},
{"data", dschema_is_data},
{"offset", duk_is_number},
{"next", dschema_is_continuation},
{NULL}
});
file = duk_get_uint(ctx, 0);
duv_get_data(ctx, 1, &buf);
offset = duk_get_number(ctx, 2);
req = duk_push_fixed_buffer(ctx, sizeof(*req));
data = duv_setup_req(ctx, 3);
duk_dup(ctx, 1);
data->data_ref = duv_ref(ctx);
req->data = data;
req->ptr = buf.base;
FS_CALL(write, req, file, &buf, 1, offset);
}
duk_ret_t duv_fs_mkdir(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
int mode = duk_require_uint(ctx, 1);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 2);
FS_CALL(mkdir, req, path, mode);
}
duk_ret_t duv_fs_mkdtemp(duk_context *ctx) {
const char* tpl = duk_require_string(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(mkdtemp, req, tpl);
}
duk_ret_t duv_fs_rmdir(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(rmdir, req, path);
}
duk_ret_t duv_fs_scandir(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
int flags = 0; // TODO: find out what these flags are.
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(scandir, req, path, flags);
}
duk_ret_t duv_fs_scandir_next(duk_context *ctx) {
uv_fs_t* req;
uv_dirent_t ent;
int ret;
const char* type;
dschema_check(ctx, (const duv_schema_entry[]) {
{"req", duv_is_fs},
{NULL}
});
req = duk_get_buffer(ctx, 0, NULL);
ret = uv_fs_scandir_next(req, &ent);
if (ret == UV_EOF) {
duv_cleanup_req(ctx, req->data);
req->data = NULL;
uv_fs_req_cleanup(req);
return 0;
}
if (ret < 0) duv_error(ctx, ret);
duk_push_object(ctx);
duk_push_string(ctx, ent.name);
duk_put_prop_string(ctx, -2, "name");
switch (ent.type) {
case UV_DIRENT_UNKNOWN: type = NULL; break;
case UV_DIRENT_FILE: type = "file"; break;
case UV_DIRENT_DIR: type = "directory"; break;
case UV_DIRENT_LINK: type = "link"; break;
case UV_DIRENT_FIFO: type = "fifo"; break;
case UV_DIRENT_SOCKET: type = "socket"; break;
case UV_DIRENT_CHAR: type = "char"; break;
case UV_DIRENT_BLOCK: type = "block"; break;
}
if (type) {
duk_push_string(ctx, type);
duk_put_prop_string(ctx, -2, "type");
}
return 1;
}
duk_ret_t duv_fs_stat(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(stat, req, path);
}
duk_ret_t duv_fs_fstat(duk_context *ctx) {
uv_file file = duk_require_uint(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(fstat, req, file);
}
duk_ret_t duv_fs_lstat(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(lstat, req, path);
}
duk_ret_t duv_fs_rename(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
const char* new_path = duk_require_string(ctx, 1);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 2);
FS_CALL(rename, req, path, new_path);
}
duk_ret_t duv_fs_fsync(duk_context *ctx) {
uv_file file = duk_require_uint(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(fsync, req, file);
}
duk_ret_t duv_fs_fdatasync(duk_context *ctx) {
uv_file file = duk_require_uint(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(fdatasync, req, file);
}
duk_ret_t duv_fs_ftruncate(duk_context *ctx) {
uv_file file = duk_require_uint(ctx, 0);
int64_t offset = duk_require_uint(ctx, 1);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 2);
FS_CALL(ftruncate, req, file, offset);
}
duk_ret_t duv_fs_sendfile(duk_context *ctx) {
uv_file out_fd = duk_require_uint(ctx, 0);
uv_file in_fd = duk_require_uint(ctx, 1);
int64_t in_offset = duk_require_uint(ctx, 2);
size_t length = duk_require_uint(ctx, 3);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 4);
FS_CALL(sendfile, req, out_fd, in_fd, in_offset, length);
}
duk_ret_t duv_fs_access(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
const char* string = duk_require_string(ctx, 1);
int mode = 0;
size_t i, l;
for (i = 0, l = strlen(string); i < l; ++i) {
switch (string[i]) {
case 'r': case 'R': mode |= R_OK; break;
case 'w': case 'W': mode |= W_OK; break;
case 'x': case 'X': mode |= X_OK; break;
default:
duk_error(ctx, DUK_ERR_TYPE_ERROR, "Unknown file access mode '%s'", string);
return 0;
}
}
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 2);
FS_CALL(access, req, path, mode);
}
duk_ret_t duv_fs_chmod(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
int mode = duk_require_uint(ctx, 1);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 2);
FS_CALL(chmod, req, path, mode);
}
duk_ret_t duv_fs_fchmod(duk_context *ctx) {
uv_file file = duk_require_uint(ctx, 0);
int mode = duk_require_uint(ctx, 1);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 2);
FS_CALL(fchmod, req, file, mode);
}
duk_ret_t duv_fs_utime(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
double atime = duk_require_number(ctx, 1);
double mtime = duk_require_number(ctx, 2);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 3);
FS_CALL(utime, req, path, atime, mtime);
}
duk_ret_t duv_fs_futime(duk_context *ctx) {
uv_file file = duk_require_uint(ctx, 0);
double atime = duk_require_number(ctx, 1);
double mtime = duk_require_number(ctx, 2);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 3);
FS_CALL(futime, req, file, atime, mtime);
}
duk_ret_t duv_fs_link(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
const char* new_path = duk_require_string(ctx, 1);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 2);
FS_CALL(link, req, path, new_path);
}
duk_ret_t duv_fs_symlink(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
const char* new_path = duk_require_string(ctx, 1);
int flags = 0;
uv_fs_t* req;
if (duk_is_object(ctx, 2)) {
duk_get_prop_string(ctx, 2, "dir");
if (duk_get_boolean(ctx, -1)) flags |= UV_FS_SYMLINK_DIR;
duk_pop(ctx);
duk_get_prop_string(ctx, 2, "junction");
if (duk_get_boolean(ctx, -1)) flags |= UV_FS_SYMLINK_JUNCTION;
duk_pop(ctx);
}
req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 3);
FS_CALL(symlink, req, path, new_path, flags);
}
duk_ret_t duv_fs_readlink(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 1);
FS_CALL(readlink, req, path);
}
duk_ret_t duv_fs_chown(duk_context *ctx) {
const char* path = duk_require_string(ctx, 0);
uv_uid_t uid = duk_require_uint(ctx, 1);
uv_uid_t gid = duk_require_uint(ctx, 2);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 3);
FS_CALL(chown, req, path, uid, gid);
}
duk_ret_t duv_fs_fchown(duk_context *ctx) {
uv_file file = duk_require_uint(ctx, 0);
uv_uid_t uid = duk_require_uint(ctx, 1);
uv_uid_t gid = duk_require_uint(ctx, 2);
uv_fs_t* req = duk_push_fixed_buffer(ctx, sizeof(*req));
req->data = duv_setup_req(ctx, 3);
FS_CALL(fchown, req, file, uid, gid);
}