tildefriends/src/file.js.c

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#include "file.js.h"
#include "mem.h"
#include "task.h"
#include "util.js.h"
#include <stdbool.h>
#include <string.h>
#include <uv.h>
#ifdef _WIN32
#include <windows.h>
#else
#include <dirent.h>
#include <unistd.h>
#endif
static JSValue _file_make_directory(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _file_remove_directory(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _file_read_file(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _file_rename_file(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _file_stat(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _file_unlink_file(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static JSValue _file_write_file(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
static double _time_spec_to_double(const uv_timespec_t* time_spec);
static void _file_on_stat_complete(uv_fs_t* request);
typedef struct file_stat_t {
void* _task;
JSContext* _context;
promiseid_t _promise;
uv_fs_t _request;
} file_stat_t;
typedef struct fs_req_t {
uv_fs_t fs;
uv_file file;
size_t size;
char buffer[];
} fs_req_t;
void tf_file_register(JSContext* context)
{
JSValue global = JS_GetGlobalObject(context);
JSValue file = JS_NewObject(context);
JS_SetPropertyStr(context, global, "File", file);
JS_SetPropertyStr(context, file, "readFile", JS_NewCFunction(context, _file_read_file, "readFile", 1));
JS_SetPropertyStr(context, file, "writeFile", JS_NewCFunction(context, _file_write_file, "writeFile", 2));
JS_SetPropertyStr(context, file, "makeDirectory", JS_NewCFunction(context, _file_make_directory, "makeDirectory", 1));
JS_SetPropertyStr(context, file, "removeDirectory", JS_NewCFunction(context, _file_remove_directory, "removeDirectory", 1));
JS_SetPropertyStr(context, file, "unlinkFile", JS_NewCFunction(context, _file_unlink_file, "unlinkFile", 1));
JS_SetPropertyStr(context, file, "renameFile", JS_NewCFunction(context, _file_rename_file, "renameFile", 2));
JS_SetPropertyStr(context, file, "stat", JS_NewCFunction(context, _file_stat, "stat", 1));
JS_FreeValue(context, global);
}
static const int k_file_read_max = 8 * 1024 * 1024;
static void _file_async_close_callback(uv_fs_t* req)
{
uv_fs_req_cleanup(req);
tf_free(req);
}
static void _file_read_read_callback(uv_fs_t* req)
{
uv_fs_req_cleanup(req);
fs_req_t* fsreq = (fs_req_t*)req;
tf_task_t* task = req->loop->data;
JSContext* context = tf_task_get_context(task);
promiseid_t promise = (promiseid_t)(intptr_t)req->data;
if (req->result >= 0)
{
JSValue array = tf_util_new_uint8_array(context, (const uint8_t*)fsreq->buffer, req->result);
tf_task_resolve_promise(task, promise, array);
JS_FreeValue(context, array);
}
else
{
tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(req->result)));
}
int result = uv_fs_close(req->loop, req, fsreq->file, _file_async_close_callback);
if (result < 0)
{
uv_fs_req_cleanup(req);
tf_free(fsreq);
}
}
static void _file_read_open_callback(uv_fs_t* req)
{
uv_fs_req_cleanup(req);
fs_req_t* fsreq = (fs_req_t*)req;
tf_task_t* task = req->loop->data;
JSContext* context = tf_task_get_context(task);
promiseid_t promise = (promiseid_t)(intptr_t)req->data;
if (req->result >= 0)
{
uv_buf_t buf = { .base = fsreq->buffer, .len = fsreq->size };
fsreq->file = req->result;
int result = uv_fs_read(req->loop, req, fsreq->file, &buf, 1, 0, _file_read_read_callback);
if (result < 0)
{
tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(result)));
result = uv_fs_close(req->loop, req, fsreq->file, _file_async_close_callback);
if (result < 0)
{
uv_fs_req_cleanup(req);
tf_free(fsreq);
}
}
}
else
{
tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(req->result)));
uv_fs_req_cleanup(req);
tf_free(req);
}
}
static JSValue _file_read_file(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
{
void* task = JS_GetContextOpaque(context);
const char* file_name = JS_ToCString(context, argv[0]);
promiseid_t promise = -1;
JSValue promise_value = tf_task_allocate_promise(task, &promise);
fs_req_t* req = tf_malloc(sizeof(fs_req_t) + k_file_read_max);
*req = (fs_req_t)
{
.fs =
{
.data = (void*)(intptr_t)promise,
},
.size = k_file_read_max,
};
int result = uv_fs_open(tf_task_get_loop(task), &req->fs, file_name, UV_FS_O_RDONLY, 0, _file_read_open_callback);
if (result < 0)
{
tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(result)));
uv_fs_req_cleanup(&req->fs);
tf_free(req);
}
JS_FreeCString(context, file_name);
return promise_value;
}
static void _file_write_write_callback(uv_fs_t* req)
{
uv_fs_req_cleanup(req);
fs_req_t* fsreq = (fs_req_t*)req;
tf_task_t* task = req->loop->data;
JSContext* context = tf_task_get_context(task);
promiseid_t promise = (promiseid_t)(intptr_t)req->data;
if (req->result >= 0)
{
tf_task_resolve_promise(task, promise, JS_NewInt64(context, req->result));
}
else
{
tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(req->result)));
}
int result = uv_fs_close(req->loop, req, fsreq->file, _file_async_close_callback);
if (result < 0)
{
uv_fs_req_cleanup(req);
tf_free(fsreq);
}
}
static void _file_write_open_callback(uv_fs_t* req)
{
fs_req_t* fsreq = (fs_req_t*)req;
uv_fs_req_cleanup(req);
tf_task_t* task = req->loop->data;
JSContext* context = tf_task_get_context(task);
promiseid_t promise = (promiseid_t)(intptr_t)req->data;
if (req->result >= 0)
{
uv_buf_t buf = { .base = fsreq->buffer, .len = fsreq->size };
fsreq->file = req->result;
int result = uv_fs_write(req->loop, req, fsreq->file, &buf, 1, 0, _file_write_write_callback);
if (result < 0)
{
tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(result)));
result = uv_fs_close(req->loop, req, fsreq->file, _file_async_close_callback);
if (result < 0)
{
uv_fs_req_cleanup(req);
tf_free(fsreq);
}
}
}
else
{
tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(req->result)));
uv_fs_req_cleanup(req);
tf_free(req);
}
}
static JSValue _file_write_file(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
{
void* task = JS_GetContextOpaque(context);
const char* file_name = JS_ToCString(context, argv[0]);
size_t size;
uint8_t* buffer = tf_util_try_get_array_buffer(context, &size, argv[1]);
bool is_array_buffer = false;
if (buffer)
{
is_array_buffer = true;
}
else
{
buffer = (uint8_t*)JS_ToCStringLen(context, &size, argv[1]);
}
promiseid_t promise = -1;
JSValue promise_value = tf_task_allocate_promise(task, &promise);
fs_req_t* req = tf_malloc(sizeof(fs_req_t) + size);
*req = (fs_req_t)
{
.fs =
{
.data = (void*)(intptr_t)promise,
},
.size = size,
};
memcpy(req->buffer, buffer, size);
if (!is_array_buffer)
{
JS_FreeCString(context, (const char*)buffer);
}
int result = uv_fs_open(tf_task_get_loop(task), &req->fs, file_name, UV_FS_O_CREAT | UV_FS_O_WRONLY, 0644, _file_write_open_callback);
if (result < 0)
{
tf_task_reject_promise(task, promise, JS_ThrowInternalError(context, "%s", uv_strerror(result)));
}
JS_FreeCString(context, file_name);
return promise_value;
}
static void _file_async_callback(uv_fs_t* req)
{
uv_fs_req_cleanup(req);
tf_task_t* task = req->loop->data;
JSContext* context = tf_task_get_context(task);
promiseid_t promise = (promiseid_t)(intptr_t)req->data;
if (req->result == 0)
{
tf_task_resolve_promise(task, promise, JS_NewInt32(context, req->result));
}
else
{
tf_task_reject_promise(task, promise, JS_NewInt32(context, req->result));
}
tf_free(req);
}
static JSValue _file_rename_file(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
{
void* task = JS_GetContextOpaque(context);
const char* old_name = JS_ToCString(context, argv[0]);
const char* new_name = JS_ToCString(context, argv[1]);
promiseid_t promise = -1;
JSValue promise_value = tf_task_allocate_promise(task, &promise);
uv_fs_t* req = tf_malloc(sizeof(uv_fs_t));
*req = (uv_fs_t)
{
.data = (void*)(intptr_t)promise,
};
int result = uv_fs_rename(tf_task_get_loop(task), req, old_name, new_name,_file_async_callback);
JS_FreeCString(context, old_name);
JS_FreeCString(context, new_name);
if (result < 0)
{
tf_task_reject_promise(task, promise, JS_NewInt32(context, result));
}
return promise_value;
}
static JSValue _file_unlink_file(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
{
void* task = JS_GetContextOpaque(context);
const char* file_name = JS_ToCString(context, argv[0]);
promiseid_t promise = -1;
JSValue promise_value = tf_task_allocate_promise(task, &promise);
uv_fs_t* req = tf_malloc(sizeof(uv_fs_t));
*req = (uv_fs_t)
{
.data = (void*)(intptr_t)promise,
};
int result = uv_fs_unlink(tf_task_get_loop(task), req, file_name, _file_async_callback);
JS_FreeCString(context, file_name);
if (result < 0)
{
tf_task_reject_promise(task, promise, JS_NewInt32(context, result));
}
return promise_value;
}
JSValue _file_make_directory(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
{
void* task = JS_GetContextOpaque(context);
const char* directory = JS_ToCString(context, argv[0]);
promiseid_t promise = -1;
JSValue promise_value = tf_task_allocate_promise(task, &promise);
uv_fs_t* req = tf_malloc(sizeof(uv_fs_t));
*req = (uv_fs_t)
{
.data = (void*)(intptr_t)promise,
};
int result = uv_fs_mkdir(tf_task_get_loop(task), req, directory, 0755, _file_async_callback);
JS_FreeCString(context, directory);
if (result < 0)
{
tf_task_reject_promise(task, promise, JS_NewInt32(context, result));
}
return promise_value;
}
JSValue _file_remove_directory(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
{
void* task = JS_GetContextOpaque(context);
const char* directory = JS_ToCString(context, argv[0]);
promiseid_t promise = -1;
JSValue promise_value = tf_task_allocate_promise(task, &promise);
uv_fs_t* req = tf_malloc(sizeof(uv_fs_t));
*req = (uv_fs_t)
{
.data = (void*)(intptr_t)promise,
};
int result = uv_fs_rmdir(tf_task_get_loop(task), req, directory, _file_async_callback);
JS_FreeCString(context, directory);
if (result < 0)
{
tf_task_reject_promise(task, promise, JS_NewInt32(context, result));
}
return promise_value;
}
JSValue _file_stat(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
{
void* task = JS_GetContextOpaque(context);
const char* path = JS_ToCString(context, argv[0]);
promiseid_t promise = -1;
JSValue promise_value = tf_task_allocate_promise(task, &promise);
file_stat_t* data = tf_malloc(sizeof(file_stat_t));
data->_task = task;
data->_promise = promise;
data->_request.data = data;
data->_context = context;
int result = uv_fs_stat(tf_task_get_loop(task), &data->_request, path, _file_on_stat_complete);
if (result)
{
tf_task_reject_promise(task, promise, JS_NewInt32(context, result));
uv_fs_req_cleanup(&data->_request);
tf_free(data);
}
JS_FreeCString(context, path);
return promise_value;
}
static double _time_spec_to_double(const uv_timespec_t* time_spec)
{
return time_spec->tv_sec + (double)(time_spec->tv_nsec) / 1e9;
}
static void _file_on_stat_complete(uv_fs_t* request)
{
file_stat_t* data = (file_stat_t*)(request->data);
JSContext* context = data->_context;
if (request->result)
{
tf_task_reject_promise(data->_task, data->_promise, JS_NewInt32(context, request->result));
}
else
{
JSValue result = JS_NewObject(context);
JS_SetPropertyStr(context, result, "mtime", JS_NewFloat64(context, _time_spec_to_double(&request->statbuf.st_mtim)));
JS_SetPropertyStr(context, result, "ctime", JS_NewFloat64(context, _time_spec_to_double(&request->statbuf.st_ctim)));
JS_SetPropertyStr(context, result, "atime", JS_NewFloat64(context, _time_spec_to_double(&request->statbuf.st_atim)));
JS_SetPropertyStr(context, result, "size", JS_NewFloat64(context, request->statbuf.st_size));
tf_task_resolve_promise(data->_task, data->_promise, result);
JS_FreeValue(context, result);
}
uv_fs_req_cleanup(request);
tf_free(data);
}