GADL/OGR C# 读取Dxf数据时,Feature的Layer属性中文乱码问题的解决
最近,用GDAL/OGR,在.net环境中用C#读取Dxf数据时,在读取Feature的Layer属性时,总是出现乱码问题。设置了全局属性 OSGeo.GDAL.Gdal.SetConfigOption(“DXF_ENCODING”, “UTF-8”);问题依然存在。查看了C#下Ogr类的源码,转换函数如下:
internal static string Utf8BytesToString(IntPtr pNativeData)
{
if (pNativeData == IntPtr.Zero)
return null;
int length = Marshal.PtrToStringAnsi(pNativeData).Length;
byte[] strbuf = new byte[length];
Marshal.Copy(pNativeData, strbuf, 0, length);
return System.Text.Encoding.UTF8.GetString(strbuf);
}
发现在读取中文时length的长度总是取错,因为UTF-8存储字节是不定长的,把函数修改为:
internal static string Utf8BytesToString(IntPtr pNativeData)
{
if (pNativeData == IntPtr.Zero)
return null;
int size = 0;
byte[] buffer = {};
do
{
++size;
Array.Resize(ref buffer, size);
Marshal.Copy(pNativeData, buffer, 0, size);
} while (buffer[size – 1] != 0); // till 0 termination found
if (1 == size)
{
return “”; // empty string
}
Array.Resize(ref buffer, size – 1); // remove terminating 0
return System.Text.Encoding.UTF8.GetString(buffer);
}
重新编译后运行,中文乱码问题解决。
转载自:https://blog.csdn.net/gdsxsc/article/details/39452171