Revert "Implemenet fs.hash() -- wkh237#439 "Feature: Calculate file hash" (wkh237#476)"

This reverts commit 1488919.

Author: Rick Terrill

README.md

@@ -594,7 +594,6 @@ File Access APIs
 - [readFile (0.6.0)](https://github.com/wkh237/react-native-fetch-blob/wiki/File-System-Access-API#readfilepath-encodingpromise)
 - [readStream](https://github.com/wkh237/react-native-fetch-blob/wiki/File-System-Access-API#readstreampath-encoding-buffersizepromise)
 - [writeStream](https://github.com/wkh237/react-native-fetch-blob/wiki/File-System-Access-API#writestreampathstring-encodingstring-appendbooleanpromise)
-- [hash](https://github.com/wkh237/react-native-fetch-blob/wiki/File-System-Access-API#hashpath-algorithmpromise)
 - [unlink](https://github.com/wkh237/react-native-fetch-blob/wiki/File-System-Access-API#unlinkpathstringpromise)
 - [mkdir](https://github.com/wkh237/react-native-fetch-blob/wiki/File-System-Access-API#mkdirpathstringpromise)
 - [ls](https://github.com/wkh237/react-native-fetch-blob/wiki/File-System-Access-API#lspathstringpromise)

android/src/main/java/com/RNFetchBlob/RNFetchBlob.java

@@ -284,21 +284,11 @@ public void run() {
     }
 
     @ReactMethod
-    public void hash(final String path, final String algorithm, final Promise promise) {
-        threadPool.execute(new Runnable() {
-            @Override
-            public void run() {
-                RNFetchBlobFS.hash(path, algorithm, promise);
-            }
-        });
-    }
-
     /**
      * @param path Stream file path
      * @param encoding Stream encoding, should be one of `base64`, `ascii`, and `utf8`
      * @param bufferSize Stream buffer size, default to 4096 or 4095(base64).
      */
-    @ReactMethod
     public void readStream(final String path, final String encoding, final int bufferSize, final int tick,
             final String streamId) {
         final ReactApplicationContext ctx = this.getReactApplicationContext();

android/src/main/java/com/RNFetchBlob/RNFetchBlobFS.java

@@ -31,7 +31,6 @@
 import java.nio.ByteBuffer;
 import java.nio.charset.Charset;
 import java.nio.charset.CharsetEncoder;
-import java.security.MessageDigest;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.UUID;
@@ -695,52 +694,6 @@ public void onScanCompleted(String s, Uri uri) {
         }
     }
 
-    static void hash(String path, String algorithm, Promise promise) {
-        try {
-            Map<String, String> algorithms = new HashMap<>();
-
-            algorithms.put("md5", "MD5");
-            algorithms.put("sha1", "SHA-1");
-            algorithms.put("sha224", "SHA-224");
-            algorithms.put("sha256", "SHA-256");
-            algorithms.put("sha384", "SHA-384");
-            algorithms.put("sha512", "SHA-512");
-
-            if (!algorithms.containsKey(algorithm)) throw new Exception("Invalid hash algorithm");
-
-            File file = new File(path);
-
-            if (file.isDirectory()) {
-                promise.reject("hash error", "EISDIR: illegal operation on a directory, read");
-                return;
-            }
-
-            if (!file.exists()) {
-                promise.reject("hash error", "ENOENT: no such file or directory, open '" + path + "'");
-                return;
-            }
-
-            MessageDigest md = MessageDigest.getInstance(algorithms.get(algorithm));
-
-            FileInputStream inputStream = new FileInputStream(path);
-            byte[] buffer = new byte[(int)file.length()];
-
-            int read;
-            while ((read = inputStream.read(buffer)) != -1) {
-                md.update(buffer, 0, read);
-            }
-
-            StringBuilder hexString = new StringBuilder();
-            for (byte digestByte : md.digest())
-                hexString.append(String.format("%02x", digestByte));
-
-            promise.resolve(hexString.toString());
-        } catch (Exception ex) {
-            ex.printStackTrace();
-            promise.reject("hash error", ex.getLocalizedMessage());
-        }
-    }
-
     /**
      * Create new file at path
      * @param path The destination path of the new file.

fs.js

@@ -238,15 +238,6 @@ function scanFile(pairs:any):Promise {
   })
 }
 
-function hash(path: string, algorithm: string): Promise<string> {
-  if(typeof path !== 'string')
-    return Promise.reject(new Error('Invalid argument "path" '))
-  if(typeof algorithm !== 'string')
-    return Promise.reject(new Error('Invalid argument "algorithm" '))
-
-  return RNFetchBlob.hash(path, algorithm)
-}
-
 function cp(path:string, dest:string):Promise<boolean> {
   return new Promise((resolve, reject) => {
     RNFetchBlob.cp(path, dest, (err, res) => {
@@ -388,7 +379,6 @@ export default {
   appendFile,
   pathForAppGroup,
   readFile,
-  hash,
   exists,
   createFile,
   isDir,

ios/RNFetchBlob/RNFetchBlob.m

@@ -461,15 +461,6 @@ - (NSDictionary *)constantsToExport
     }];
 }
 
-#pragma mark - fs.hash
-RCT_EXPORT_METHOD(hash:(NSString *)path
-                  algorithm:(NSString *)algorithm
-                  resolver:(RCTPromiseResolveBlock)resolve
-                  rejecter:(RCTPromiseRejectBlock)reject)
-{
-    [RNFetchBlobFS hash:path algorithm:[NSString stringWithString:algorithm] resolver:resolve rejecter:reject];
-}
-
 #pragma mark - fs.readStream
 RCT_EXPORT_METHOD(readStream:(NSString *)path withEncoding:(NSString *)encoding bufferSize:(int)bufferSize tick:(int)tick streamId:(NSString *)streamId)
 {

ios/RNFetchBlobFS.m

@@ -489,76 +489,6 @@ + (void) readFile:(NSString *)path
     }];
 }
 
-# pragma mark - hash
-
-RCT_EXPORT_METHOD(hash:(NSString *)filepath
-                  algorithm:(NSString *)algorithm
-                  resolver:(RCTPromiseResolveBlock)resolve
-                  rejecter:(RCTPromiseRejectBlock)reject)
-{
-  BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filepath];
-
-  if (!fileExists) {
-    return reject(@"ENOENT", [NSString stringWithFormat:@"ENOENT: no such file or directory, open '%@'", filepath], nil);
-  }
-
-  NSError *error = nil;
-
-  NSDictionary *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:filepath error:&error];
-
-  if (error) {
-    return [self reject:reject withError:error];
-  }
-
-  if ([attributes objectForKey:NSFileType] == NSFileTypeDirectory) {
-    return reject(@"EISDIR", @"EISDIR: illegal operation on a directory, read", nil);
-  }
-
-  NSData *content = [[NSFileManager defaultManager] contentsAtPath:filepath];
-
-  NSArray *keys = [NSArray arrayWithObjects:@"md5", @"sha1", @"sha224", @"sha256", @"sha384", @"sha512", nil];
-
-  NSArray *digestLengths = [NSArray arrayWithObjects:
-    @CC_MD5_DIGEST_LENGTH,
-    @CC_SHA1_DIGEST_LENGTH,
-    @CC_SHA224_DIGEST_LENGTH,
-    @CC_SHA256_DIGEST_LENGTH,
-    @CC_SHA384_DIGEST_LENGTH,
-    @CC_SHA512_DIGEST_LENGTH,
-    nil];
-
-  NSDictionary *keysToDigestLengths = [NSDictionary dictionaryWithObjects:digestLengths forKeys:keys];
-
-  int digestLength = [[keysToDigestLengths objectForKey:algorithm] intValue];
-
-  if (!digestLength) {
-    return reject(@"Error", [NSString stringWithFormat:@"Invalid hash algorithm '%@'", algorithm], nil);
-  }
-
-  unsigned char buffer[digestLength];
-
-  if ([algorithm isEqualToString:@"md5"]) {
-    CC_MD5(content.bytes, (CC_LONG)content.length, buffer);
-  } else if ([algorithm isEqualToString:@"sha1"]) {
-    CC_SHA1(content.bytes, (CC_LONG)content.length, buffer);
-  } else if ([algorithm isEqualToString:@"sha224"]) {
-    CC_SHA224(content.bytes, (CC_LONG)content.length, buffer);
-  } else if ([algorithm isEqualToString:@"sha256"]) {
-    CC_SHA256(content.bytes, (CC_LONG)content.length, buffer);
-  } else if ([algorithm isEqualToString:@"sha384"]) {
-    CC_SHA384(content.bytes, (CC_LONG)content.length, buffer);
-  } else if ([algorithm isEqualToString:@"sha512"]) {
-    CC_SHA512(content.bytes, (CC_LONG)content.length, buffer);
-  } else {
-    return reject(@"Error", [NSString stringWithFormat:@"Invalid hash algorithm '%@'", algorithm], nil);
-  }
-
-  NSMutableString *output = [NSMutableString stringWithCapacity:digestLength * 2];
-  for(int i = 0; i < digestLength; i++)
-    [output appendFormat:@"%02x",buffer[i]];
-
-  resolve(output);
-}
 
 # pragma mark - mkdir