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110 lines
2.6 KiB
JavaScript
110 lines
2.6 KiB
JavaScript
const RNFS = require('react-native-fs');
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class FsDriverRN {
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appendFileSync(path, string) {
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throw new Error('Not implemented');
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}
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appendFile(path, string, encoding = 'base64') {
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return RNFS.appendFile(path, string, encoding);
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}
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writeFile(path, string, encoding = 'base64') {
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return RNFS.writeFile(path, string, encoding);
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}
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writeBinaryFile(path, content) {
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throw new Error('Not implemented');
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}
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async move(source, dest) {
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return RNFS.moveFile(source, dest);
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}
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async exists(path) {
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return RNFS.exists(path);
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}
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async mkdir(path) {
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return fs.mkdir(path);
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}
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async stat(path) {
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const r = await RNFS.stat(path);
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// Returns a format compatible with Node.js format
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return {
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birthtime: r.ctime, // Confusingly, "ctime" normally means "change time" but here it's used as "creation time"
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mtime: r.mtime,
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isDirectory: () => r.isDirectory(),
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path: path,
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};
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}
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async setTimestamp(path, timestampDate) {
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return RNFS.touch(path, timestampDate);
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}
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async open(path, mode) {
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// Note: RNFS.read() doesn't provide any way to know if the end of file has been reached.
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// So instead we stat the file here and use stat.size to manually check for end of file.
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// Bug: https://github.com/itinance/react-native-fs/issues/342
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const stat = await this.stat(path);
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return {
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path: path,
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offset: 0,
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mode: mode,
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stat: stat,
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}
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}
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close(handle) {
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return null;
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}
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readFile(path, encoding = 'utf8') {
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if (encoding === 'Buffer') throw new Error('Raw buffer output not supported for FsDriverRN.readFile');
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return RNFS.readFile(path, encoding);
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}
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// Always overwrite destination
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async copy(source, dest) {
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let retry = false;
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try {
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await RNFS.copyFile(source, dest);
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} catch (error) {
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// On iOS it will throw an error if the file already exist
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retry = true;
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await this.unlink(dest);
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}
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if (retry) await RNFS.copyFile(source, dest);
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}
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async unlink(path) {
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try {
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await RNFS.unlink(path);
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} catch (error) {
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if (error && error.message && error.message.indexOf('exist') >= 0) {
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// Probably { [Error: File does not exist] framesToPop: 1, code: 'EUNSPECIFIED' }
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// which unfortunately does not have a proper error code. Can be ignored.
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} else {
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throw error;
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}
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}
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}
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async readFileChunk(handle, length, encoding = 'base64') {
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if (handle.offset + length > handle.stat.size) {
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length = handle.stat.size - handle.offset;
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}
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if (!length) return null;
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let output = await RNFS.read(handle.path, length, handle.offset, encoding);
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handle.offset += length;
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return output ? output : null;
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}
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}
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module.exports.FsDriverRN = FsDriverRN; |