Changeset 16:1d329bbc0303 in xplra for src/client

Timestamp:

01/28/13 19:25:31 (11 years ago)

Author:

István Váradi <ivaradi@…>

Branch:

default

hg-Phase:

(<MercurialRepository 3 'hg:/home/ivaradi/xplane/hg/xplra' '/'>, 'public')

Message:

Added the functions to handle the array queries

Location:

src/client/c/hu/varadiistvan/xplra

Files:

• XPlane.cc (modified) (2 diffs)
• XPlane.h (modified) (2 diffs)

src/client/c/hu/varadiistvan/xplra/XPlane.cc

@@ -49 +49 @@
 
 using std::auto_ptr;
+using std::string;
 
 //------------------------------------------------------------------------------
@@ -181 +182 @@
 //------------------------------------------------------------------------------
 
+size_t XPlane::getArray(const char* name, uint8_t type,
+                        ssize_t length, size_t offset) throw(Exception)
+{
+    checkStream();
+
+    stream->writeU8(Protocol::COMMAND_GET_SINGLE);
+    stream->writeString(name, strlen(name));
+    stream->writeU8(type);
+    stream->writeS32(static_cast<int32_t>(length));
+    stream->writeS32(static_cast<int32_t>(offset));
+    if (!stream->flush()) checkStream();
+
+    uint8_t result = stream->readU8();
+    length = stream->readS32();
+    checkStream();
+    checkResult(result);
+
+    return length;
+}
+
+//------------------------------------------------------------------------------
+
+size_t XPlane::getFloatArray(const char* name, float* dest,
+                             size_t length, size_t offset) throw(Exception)
+{
+    length = getArray(name, Protocol::TYPE_FLOAT_ARRAY, length, offset);
+
+    if (!stream->read(dest, length*sizeof(float))) checkStream();
+
+    return length;
+}
+
+//------------------------------------------------------------------------------
+
+float* XPlane::getFloatArray(const char* name, size_t& length,
+                             size_t offset) throw(Exception)
+{
+    length = getArray(name, Protocol::TYPE_FLOAT_ARRAY, -1, offset);
+
+    auto_ptr<float> data(new float[length]);
+    if (!stream->read(data.get(), length*sizeof(float))) checkStream();
+    return data.release();
+}
+
+//------------------------------------------------------------------------------
+
+size_t XPlane::getIntArray(const char* name, int32_t* dest,
+                           size_t length, size_t offset) throw(Exception)
+{
+    length = getArray(name, Protocol::TYPE_INT_ARRAY, length, offset);
+
+    if (!stream->read(dest, length*sizeof(int32_t))) checkStream();
+
+    return length;
+}
+
+//------------------------------------------------------------------------------
+
+int32_t* XPlane::getIntArray(const char* name, size_t& length,
+                             size_t offset) throw(Exception)
+{
+    length = getArray(name, Protocol::TYPE_INT_ARRAY, -1, offset);
+
+    auto_ptr<int32_t> data(new int32_t[length]);
+    if (!stream->read(data.get(), length*sizeof(int32_t))) checkStream();
+    return data.release();
+}
+
+//------------------------------------------------------------------------------
+
+size_t XPlane::getByteArray(const char* name, uint8_t* dest,
+                            size_t length, size_t offset) throw(Exception)
+{
+    length = getArray(name, Protocol::TYPE_BYTE_ARRAY, length, offset);
+
+    if (!stream->read(dest, length*sizeof(uint8_t))) checkStream();
+
+    return length;
+}
+
+//------------------------------------------------------------------------------
+
+uint8_t* XPlane::getByteArray(const char* name, size_t& length,
+                              size_t offset) throw(Exception)
+{
+    length = getArray(name, Protocol::TYPE_BYTE_ARRAY, -1, offset);
+
+    auto_ptr<uint8_t> data(new uint8_t[length]);
+    if (!stream->read(data.get(), length*sizeof(uint8_t))) checkStream();
+    return data.release();
+}
+
+//------------------------------------------------------------------------------
+
+string XPlane::getString(const char* name, size_t offset) throw(Exception)
+{
+    size_t length = 0;
+    auto_ptr<uint8_t> data(getByteArray(name, length, offset));
+    return string(reinterpret_cast<char*>(data.get()));
+}
+
+//------------------------------------------------------------------------------
+
 // Local Variables:
 // mode: C++

src/client/c/hu/varadiistvan/xplra/XPlane.h

@@ -118 +118 @@
     double getDouble(const char* name) throw(Exception);
 
+    /**
+     * Get a possibly partial array of floats.
+     *
+     * @param length the length of the destination buffer
+     * @param offset the offset from which to get the array
+     *
+     * @return the number of values acquired actually
+     */
+    size_t getFloatArray(const char* name, float* dest,
+                         size_t length, size_t offset = 0) throw(Exception);
+
+    /**
+     * Get a possibly partial array of floats. The result array will
+     * be created with a length needed to hold the returned value.
+     *
+     * @param offset the offset from which to get the array
+     */
+    float* getFloatArray(const char* name, size_t& length,
+                         size_t offset = 0) throw(Exception);
+
+    /**
+     * Get a possibly partial array of integers.
+     *
+     * @param length the length of the destination buffer
+     * @param offset the offset from which to get the array
+     *
+     * @return the number of values acquired actually
+     */
+    size_t getIntArray(const char* name, int32_t* dest,
+                       size_t length, size_t offset = 0) throw(Exception);
+
+    /**
+     * Get a possibly partial array of integers. The result array will
+     * be created with a length needed to hold the returned value.
+     *
+     * @param offset the offset from which to get the array
+     */
+    int32_t* getIntArray(const char* name, size_t& length,
+                         size_t offset = 0) throw(Exception);
+
+    /**
+     * Get a possibly partial array of bytes.
+     *
+     * @param length the length of the destination buffer
+     * @param offset the offset from which to get the array
+     *
+     * @return the number of values acquired actually
+     */
+    size_t getByteArray(const char* name, uint8_t* dest,
+                        size_t length, size_t offset = 0) throw(Exception);
+
+    /**
+     * Get a possibly partial array of bytes. The result array will
+     * be created with a length needed to hold the returned value.
+     *
+     * @param offset the offset from which to get the array
+     */
+    uint8_t* getByteArray(const char* name, size_t& lengyh,
+                          size_t offset = 0) throw(Exception);
+
+    /**
+     * Get a string. A string is a byte array.
+     */
+    std::string getString(const char* name, size_t offset = 0) throw(Exception);
+
 private:
     /**
@@ -135 +200 @@
      */
     void getScalar(const char* name, uint8_t type) throw(Exception);
+
+    /**
+     * Issue the command to get an array of values of the given
+     * type. It checks the result and retrieves the number of value
+     * items available.
+     *
+     * @return the number of value items available
+     */
+    size_t getArray(const char* name, uint8_t type,
+                    ssize_t length, size_t offset) throw(Exception);
+
 };