Merge "Add support for decoding UTF16 to UTF8" am: ac4728f8ba am: 7b0c8479ae (040424fd) · Commits · e / os / android_frameworks_native

include/binder/Parcel.h

+15 −0

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@
		#ifndef ANDROID_PARCEL_H
		#define ANDROID_PARCEL_H

		#include <string>
		#include <vector>

		#include <cutils/native_handle.h>
		@@ -119,6 +120,10 @@ public:
		status_t writeChar(char16_t val);
		status_t writeByte(int8_t val);

		// Take a UTF8 encoded string, convert to UTF16, write it to the parcel.
		status_t writeUtf8AsUtf16(const std::string& str);
		status_t writeUtf8AsUtf16(const std::unique_ptr<std::string>& str);

		status_t writeByteVector(const std::unique_ptr<std::vector<int8_t>>& val);
		status_t writeByteVector(const std::vector<int8_t>& val);
		status_t writeInt32Vector(const std::unique_ptr<std::vector<int32_t>>& val);
		@@ -136,6 +141,9 @@ public:
		status_t writeString16Vector(
		const std::unique_ptr<std::vector<std::unique_ptr<String16>>>& val);
		status_t writeString16Vector(const std::vector<String16>& val);
		status_t writeUtf8VectorAsUtf16Vector(
		const std::unique_ptr<std::vector<std::unique_ptr<std::string>>>& val);
		status_t writeUtf8VectorAsUtf16Vector(const std::vector<std::string>& val);

		status_t writeStrongBinderVector(const std::unique_ptr<std::vector<sp<IBinder>>>& val);
		status_t writeStrongBinderVector(const std::vector<sp<IBinder>>& val);
		@@ -230,6 +238,10 @@ public:
		int8_t readByte() const;
		status_t readByte(int8_t *pArg) const;

		// Read a UTF16 encoded string, convert to UTF8
		status_t readUtf8FromUtf16(std::string* str) const;
		status_t readUtf8FromUtf16(std::unique_ptr<std::string>* str) const;

		const char* readCString() const;
		String8 readString8() const;
		String16 readString16() const;
		@@ -274,6 +286,9 @@ public:
		status_t readString16Vector(
		std::unique_ptr<std::vector<std::unique_ptr<String16>>>* val) const;
		status_t readString16Vector(std::vector<String16>* val) const;
		status_t readUtf8VectorFromUtf16Vector(
		std::unique_ptr<std::vector<std::unique_ptr<std::string>>>* val) const;
		status_t readUtf8VectorFromUtf16Vector(std::vector<std::string>* val) const;

		template<typename T>
		status_t read(Flattenable<T>& val) const;

libs/binder/Parcel.cpp

+88 −0

Original line number	Diff line number	Diff line
		@@ -749,6 +749,37 @@ restart_write:
		return NULL;
		}

		status_t Parcel::writeUtf8AsUtf16(const std::string& str) {
		const uint8_t* strData = (uint8_t*)str.data();
		const size_t strLen= str.length();
		const ssize_t utf16Len = utf8_to_utf16_length(strData, strLen);
		if (utf16Len < 0 \|\| utf16Len> std::numeric_limits<int32_t>::max()) {
		return BAD_VALUE;
		}

		status_t err = writeInt32(utf16Len);
		if (err) {
		return err;
		}

		// Allocate enough bytes to hold our converted string and its terminating NULL.
		void* dst = writeInplace((utf16Len + 1) * sizeof(char16_t));
		if (!dst) {
		return NO_MEMORY;
		}

		utf8_to_utf16(strData, strLen, (char16_t*)dst);

		return NO_ERROR;
		}

		status_t Parcel::writeUtf8AsUtf16(const std::unique_ptr<std::string>& str) {
		if (!str) {
		return writeInt32(-1);
		}
		return writeUtf8AsUtf16(*str);
		}

		status_t Parcel::writeByteVector(const std::unique_ptr<std::vector<int8_t>>& val)
		{
		if (!val) {
		@@ -852,6 +883,15 @@ status_t Parcel::writeString16Vector(
		return writeNullableTypedVector(val, &Parcel::writeString16);
		}

		status_t Parcel::writeUtf8VectorAsUtf16Vector(
		const std::unique_ptr<std::vector<std::unique_ptr<std::string>>>& val) {
		return writeNullableTypedVector(val, &Parcel::writeUtf8AsUtf16);
		}

		status_t Parcel::writeUtf8VectorAsUtf16Vector(const std::vector<std::string>& val) {
		return writeTypedVector(val, &Parcel::writeUtf8AsUtf16);
		}

		status_t Parcel::writeInt32(int32_t val)
		{
		return writeAligned(val);
		@@ -1491,6 +1531,14 @@ status_t Parcel::readString16Vector(std::vector<String16>* val) const {
		return readTypedVector(val, &Parcel::readString16);
		}

		status_t Parcel::readUtf8VectorFromUtf16Vector(
		std::unique_ptr<std::vector<std::unique_ptr<std::string>>>* val) const {
		return readNullableTypedVector(val, &Parcel::readUtf8FromUtf16);
		}

		status_t Parcel::readUtf8VectorFromUtf16Vector(std::vector<std::string>* val) const {
		return readTypedVector(val, &Parcel::readUtf8FromUtf16);
		}

		status_t Parcel::readInt32(int32_t *pArg) const
		{
		@@ -1649,6 +1697,46 @@ int8_t Parcel::readByte() const
		return int8_t(readInt32());
		}

		status_t Parcel::readUtf8FromUtf16(std::string* str) const {
		size_t utf16Size = 0;
		const char16_t* src = readString16Inplace(&utf16Size);
		if (!src) {
		return UNEXPECTED_NULL;
		}

		// Save ourselves the trouble, we're done.
		if (utf16Size == 0u) {
		str->clear();
		return NO_ERROR;
		}

		ssize_t utf8Size = utf16_to_utf8_length(src, utf16Size);
		if (utf8Size < 0) {
		return BAD_VALUE;
		}
		// Note that while it is probably safe to assume string::resize keeps a
		// spare byte around for the trailing null, we're going to be explicit.
		str->resize(utf8Size + 1);
		utf16_to_utf8(src, utf16Size, &((*str)[0]));
		str->resize(utf8Size);
		return NO_ERROR;
		}

		status_t Parcel::readUtf8FromUtf16(std::unique_ptr<std::string>* str) const {
		const int32_t start = dataPosition();
		int32_t size;
		status_t status = readInt32(&size);
		str->reset();

		if (status != OK \|\| size < 0) {
		return status;
		}

		setDataPosition(start);
		str->reset(new std::string());
		return readUtf8FromUtf16(str->get());
		}

		const char* Parcel::readCString() const
		{
		const size_t avail = mDataSize-mDataPos;