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Added string handling to all Convert methods

pull/60/head
David Hall 2019-03-25 17:39:29 -07:00
parent dc83d5d0b4
commit 178701d505
1 changed files with 18 additions and 5 deletions
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23
Core/InteropServices/IntPtrConverter.cs
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@ -10,27 +10,37 @@ namespace Vanara.InteropServices
/// <summary>Functions to safely convert a memory pointer to a type.</summary>
public static class IntPtrConverter
{
/// <summary>Converts the specified pointer to <typeparamref name="T"/>.</summary>
/// <summary>Converts the specified pointer to <typeparamref name="T" />.</summary>
/// <typeparam name="T">The destination type.</typeparam>
/// <param name="ptr">The pointer to a block of memory.</param>
/// <param name="sz">The size of the allocated memory block.</param>
/// <param name="charSet">The character set.</param>
/// <returns>A value of the type specified.</returns>
public static T Convert<T>(this IntPtr ptr, uint sz) => (T)Convert(ptr, sz, typeof(T));
public static T Convert<T>(this IntPtr ptr, uint sz, CharSet charSet = CharSet.Auto) => (T)Convert(ptr, sz, typeof(T), charSet);
/// <summary>Converts the specified pointer to type specified in <paramref name="destType"/>.</summary>
/// <summary>Converts the specified pointer to type specified in <paramref name="destType" />.</summary>
/// <param name="ptr">The pointer to a block of memory.</param>
/// <param name="sz">The size of the allocated memory block.</param>
/// <param name="destType">The destination type.</param>
/// <param name="charSet">The character set.</param>
/// <returns>A value of the type specified.</returns>
/// <exception cref="ArgumentException">
/// Cannot convert a null pointer. - ptr
/// or
/// Cannot convert a pointer with no Size. - sz
/// </exception>
/// <exception cref="NotSupportedException">Thrown if type cannot be converted from memory.</exception>
public static object Convert(this IntPtr ptr, uint sz, Type destType)
/// <exception cref="OutOfMemoryException"></exception>
public static object Convert(this IntPtr ptr, uint sz, Type destType, CharSet charSet = CharSet.Auto)
{
if (ptr == IntPtr.Zero) throw new ArgumentException("Cannot convert a null pointer.", nameof(ptr));
if (sz == 0) throw new ArgumentException("Cannot convert a pointer with no Size.", nameof(sz));
// Handle byte array as special case
// Handle byte array and pointer as special cases
if (destType.IsArray && destType.GetElementType() == typeof(byte))
return ptr.ToArray<byte>((int)sz);
if (destType == typeof(IntPtr))
return Marshal.ReadIntPtr(ptr);
var typeCode = Type.GetTypeCode(destType);
switch (typeCode)
@ -86,6 +96,9 @@ namespace Vanara.InteropServices
case TypeCode.DateTime:
return DateTime.FromBinary((long)GetBlittable(typeof(long)));
case TypeCode.String:
return StringHelper.GetString(ptr, charSet, sz);
default:
throw new NotSupportedException("Unsupported type parameter.");
}