private static extern bool asar_patch_ex(ref Rawpatchparams parameters);
/// <summary>
/// Applies a patch.
/// </summary>
/// <param name="patchLocation">The patch location.</param>
/// <param name="romData">The rom data. It must not be headered.</param>
/// <param name="includePaths">lists additional include paths</param>
/// <param name="shouldReset">specifies whether asar should clear out all defines, labels,
/// etc from the last inserted file. Setting it to False will make Asar act like the
// currently patched file was directly appended to the previous one.</param>
/// <param name="additionalDefines">specifies extra defines to give to the patch</param>
/// <param name="stdIncludeFile">path to a file that specifes additional include paths</param>
/// <param name="stdDefineFile">path to a file that specifes additional defines</param>
/// <returns>True if no errors.</returns>
public static bool patch(string patchLocation, ref byte[] romData, string[] includePaths = null, bool shouldReset = true, Dictionary <string, string> additionalDefines = null, string stdIncludeFile = null, string stdDefineFile = null)
{
if (includePaths == null)
{
includePaths = new string[0];
}
if (additionalDefines == null)
{
additionalDefines = new Dictionary <string, string>();
}
var includes = new byte *[includePaths.Length];
var defines = new Rawasardefine[additionalDefines.Count];
try{
for (int i = 0; i < includePaths.Length; i++)
{
includes[i] = (byte *)Marshal.StringToCoTaskMemAnsi(includePaths[i]);
}
var keys = additionalDefines.Keys.ToArray();
for (int i = 0; i < additionalDefines.Count; i++)
{
var name = keys[i];
var value = additionalDefines[name];
defines[i].name = Marshal.StringToCoTaskMemAnsi(name);
defines[i].contents = Marshal.StringToCoTaskMemAnsi(value);
}
int newsize = maxromsize();
int length = romData.Length;
if (length < newsize)
{
Array.Resize(ref romData, newsize);
}
bool success;
fixed(byte *ptr = romData)
fixed(byte **includepaths = includes)
fixed(Rawasardefine * additional_defines = defines)
{
var param = new Rawpatchparams
{
patchloc = patchLocation,
romdata = ptr,
buflen = newsize,
romlen = &length,
should_reset = shouldReset,
includepaths = includepaths,
numincludepaths = includes.Length,
additional_defines = additional_defines,
additional_define_count = defines.Length,
stddefinesfile = stdDefineFile,
stdincludesfile = stdIncludeFile
};
param.structsize = Marshal.SizeOf(param);
success = asar_patch_ex(ref param);
}
if (length < newsize)
{
Array.Resize(ref romData, length);
}
return(success);
}
finally
{
for (int i = 0; i < includes.Length; i++)
{
Marshal.FreeCoTaskMem((IntPtr)includes[i]);
}
foreach (var define in defines)
{
Marshal.FreeCoTaskMem(define.name);
Marshal.FreeCoTaskMem(define.contents);
}
}
}
