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diff --git a/native/cpp/CommonCpp/NativeModules/CommUtilsModule.cpp b/native/cpp/CommonCpp/NativeModules/CommUtilsModule.cpp
--- a/native/cpp/CommonCpp/NativeModules/CommUtilsModule.cpp
+++ b/native/cpp/CommonCpp/NativeModules/CommUtilsModule.cpp
@@ -1,4 +1,5 @@
#include "CommUtilsModule.h"
+#include "../Tools/Base64.h"
#include <ReactCommon/TurboModuleUtils.h>
#include <fstream>
@@ -100,7 +101,13 @@
jsi::String
CommUtilsModule::base64EncodeBuffer(jsi::Runtime &rt, jsi::Object data) {
- return jsi::String::createFromAscii(rt, "unimplemented");
+ auto arrayBuffer = data.getArrayBuffer(rt);
+ auto dataPtr = arrayBuffer.data(rt);
+ auto size = arrayBuffer.size(rt);
+
+ auto bytes = std::vector<uint8_t>{dataPtr, dataPtr + size};
+ auto base64 = Base64::encode(bytes);
+ return jsi::String::createFromUtf8(rt, base64);
}
} // namespace comm
diff --git a/native/cpp/CommonCpp/Tools/Base64.h b/native/cpp/CommonCpp/Tools/Base64.h
new file mode 100644
--- /dev/null
+++ b/native/cpp/CommonCpp/Tools/Base64.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+namespace comm {
+
+class Base64 {
+public:
+ static std::string encode(const std::vector<uint8_t> &data);
+};
+
+} // namespace comm
diff --git a/native/cpp/CommonCpp/Tools/Base64.cpp b/native/cpp/CommonCpp/Tools/Base64.cpp
new file mode 100644
--- /dev/null
+++ b/native/cpp/CommonCpp/Tools/Base64.cpp
@@ -0,0 +1,53 @@
+#include "Base64.h"
+
+#include <math.h>
+#include <array>
+
+namespace comm {
+
+static constexpr std::array<char, 64> encode_table{
+ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+ 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
+ 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'};
+
+static std::array<char, 4> encode_triplet(uint8_t a, uint8_t b, uint8_t c) {
+ constexpr uint32_t SIX_BIT_MASK = 0b111111;
+ const uint32_t concat_bits = (a << 16) | (b << 8) | c;
+ const auto x = encode_table[(concat_bits >> 18) & SIX_BIT_MASK];
+ const auto y = encode_table[(concat_bits >> 12) & SIX_BIT_MASK];
+ const auto z = encode_table[(concat_bits >> 6) & SIX_BIT_MASK];
+ const auto w = encode_table[concat_bits & SIX_BIT_MASK];
+ return {x, y, z, w};
+}
+
+std::string Base64::encode(const std::vector<uint8_t> &data) {
+ const auto size = data.size();
+ const auto remainder = size % 3;
+ const auto baseLength = size - remainder;
+
+ // three bytes are encoded by 4 base64 chars
+ std::string encoded;
+ encoded.reserve(4 * ceil(size / 3));
+
+ for (std::size_t i = 0; i < baseLength; i += 3) {
+ const auto b64_chars = encode_triplet(data[i], data[i + 1], data[i + 2]);
+ std::copy(begin(b64_chars), end(b64_chars), back_inserter(encoded));
+ }
+
+ if (remainder == 1) {
+ const auto b64_chars = encode_triplet(data.back(), 0x00, 0x00);
+ encoded.push_back(b64_chars[0]);
+ encoded.push_back(b64_chars[1]);
+ encoded.append("==");
+ } else if (remainder == 2) {
+ auto it = data.end() - 2;
+ const auto b64_chars = encode_triplet(*it, *(it + 1), 0x00);
+ std::copy_n(begin(b64_chars), 3, back_inserter(encoded));
+ encoded.push_back('=');
+ }
+ return encoded;
+}
+
+} // namespace comm
diff --git a/native/cpp/CommonCpp/Tools/CMakeLists.txt b/native/cpp/CommonCpp/Tools/CMakeLists.txt
--- a/native/cpp/CommonCpp/Tools/CMakeLists.txt
+++ b/native/cpp/CommonCpp/Tools/CMakeLists.txt
@@ -4,10 +4,12 @@
include(GNUInstallDirs)
set(TOOLS_HDRS
+ "Base64.h"
"WorkerThread.h"
)
set(TOOLS_SRCS
+ "Base64.cpp"
"WorkerThread.cpp"
)
diff --git a/native/ios/Comm.xcodeproj/project.pbxproj b/native/ios/Comm.xcodeproj/project.pbxproj
--- a/native/ios/Comm.xcodeproj/project.pbxproj
+++ b/native/ios/Comm.xcodeproj/project.pbxproj
@@ -39,6 +39,7 @@
7FA2DCDF293E62F500991BA4 /* SWMansionIcons.ttf in Resources */ = {isa = PBXBuildFile; fileRef = 7FA2DCDD293E62F500991BA4 /* SWMansionIcons.ttf */; };
7FBB2A7629E94539002C6493 /* utilsJSI-generated.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 7FBB2A7529E94539002C6493 /* utilsJSI-generated.cpp */; };
7FBB2A7829E945C2002C6493 /* CommUtilsModule.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 7FBB2A7329E944FD002C6493 /* CommUtilsModule.cpp */; };
+ 7FBB2A7B29EEA2A4002C6493 /* Base64.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 7FBB2A7A29EEA2A4002C6493 /* Base64.cpp */; };
7FE4D9F5291DFE9300667BF6 /* commJSI-generated.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 7FE4D9F4291DFE9300667BF6 /* commJSI-generated.cpp */; };
8B38121629CE5742000C52E9 /* RustPromiseManager.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 8B38121529CE5742000C52E9 /* RustPromiseManager.cpp */; };
8B652FA6295EAA5B009F8163 /* RustCallback.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 8B652FA5295EAA5B009F8163 /* RustCallback.cpp */; };
@@ -168,6 +169,8 @@
7FBB2A7429E9450E002C6493 /* CommUtilsModule.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = CommUtilsModule.h; sourceTree = "<group>"; };
7FBB2A7529E94539002C6493 /* utilsJSI-generated.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = "utilsJSI-generated.cpp"; sourceTree = "<group>"; };
7FBB2A7729E94541002C6493 /* utilsJSI.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = utilsJSI.h; sourceTree = "<group>"; };
+ 7FBB2A7929EA752D002C6493 /* Base64.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = Base64.h; sourceTree = "<group>"; };
+ 7FBB2A7A29EEA2A4002C6493 /* Base64.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = Base64.cpp; sourceTree = "<group>"; };
7FCEA2DC2444010B004017B1 /* Comm-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Comm-Bridging-Header.h"; sourceTree = "<group>"; };
7FCFD8BD1E81B8DF00629B0E /* Comm.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; name = Comm.entitlements; path = Comm/Comm.entitlements; sourceTree = "<group>"; };
7FE4D9F3291DFE9300667BF6 /* commJSI.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = commJSI.h; sourceTree = "<group>"; };
@@ -357,6 +360,8 @@
71BE84382636A944002849D2 /* Tools */ = {
isa = PBXGroup;
children = (
+ 7FBB2A7A29EEA2A4002C6493 /* Base64.cpp */,
+ 7FBB2A7929EA752D002C6493 /* Base64.h */,
71B8CCBD26BD4DEB0040C0A2 /* CommSecureStore.h */,
718DE99C2653D41C00365824 /* WorkerThread.cpp */,
718DE99D2653D41C00365824 /* WorkerThread.h */,
@@ -989,6 +994,7 @@
7FE4D9F5291DFE9300667BF6 /* commJSI-generated.cpp in Sources */,
8B652FA6295EAA5B009F8163 /* RustCallback.cpp in Sources */,
71142A7726C2650B0039DCBD /* CommSecureStoreIOSWrapper.mm in Sources */,
+ 7FBB2A7B29EEA2A4002C6493 /* Base64.cpp in Sources */,
CB38F2B1286C6C870010535C /* MessageOperationsUtilities.cpp in Sources */,
71CA4A64262DA8E500835C89 /* Logger.mm in Sources */,
71BF5B7F26BBDD7400EDE27D /* CryptoModule.cpp in Sources */,

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