MrmLib

MrmLib is a WinRT Component library for working with PRI (Package Resource Index) files, it can be used to read and modify resources in PRI files.

MrmLib was originally developed to be used in conjunction with DynamicXAML, the name "Mrm" comes from the system component used for processing PRI files which is called "MRM" (Modern Resource Manager), it's also sometimes referred to as MRT (Modern Resource Technology).

Installation

Usage

Loading a PRI file

using MrmLib;

...

StorageFile priStorageFile = ...;
var priFile = await PriFile.LoadAsync(priStorageFile);

string priPath = ...;
var priFile = await PriFile.LoadAsync(priPath);

byte[] priData = ...;
var priFile = await PriFile.LoadAsync(priData);

Reading resources

using MrmLib;

...

var priFile = await PriFile.LoadAsync(...);
foreach (var candidate in priFile.ResourceCandidates)
{
    Console.Write($"Resource Name: {candidate.ResourceName}, Resource Type: {candidate.ValueType}");
    
    if (candidate.ValueType == ResourceValueType.EmbeddedData)
    {
        byte[] data = candidate.DataValue
        Console.Write($", Data Value Length: {data.Length} bytes");
    }
    else
    {
        string data = candidate.StringData;
        Console.Write($", String Value: {data}");
    }

    Console.Write($", Qualifiers Count: {candidate.Qualifiers.Count}");
    Console.WriteLine($", Value as System.Object: {candidate.Value}");
}

Modifying resources

using MrmLib;

...

var priFile = await PriFile.LoadAsync(...);
var candidate = priFile.ResourceCandidates[0];


candidate.SetValue("New String Value");


candidate.SetValue(candidate, "Assets\\NewFilePath.png");


candidate.SetValue(candidate, ResourceValueType.Path, "Assets\\NewFilePath.png");


byte[] newData = ...;
candidate.SetValue(candidate, newData);


candidate.StringValue = "Another Way To Set a New String Value";
candidate.ValueType = ResourceValueType.String;


StorageFolder assetsFolder = ...;
var result = await priFile.ReplacePathCandidatesWithEmbeddedDataAsync(assetsFolder);


string assetsFolderPath = ...;
var result = await priFile.ReplacePathCandidatesWithEmbeddedDataAsync(assetsFolderPath);

Adding new resources

using MrmLib;

...

var priFile = await PriFile.LoadAsync(...);

var customResourceName = "Files/CustomImageResource.png";
using var client = new System.Net.Http.HttpClient();
client.DefaultRequestHeaders.UserAgent.ParseAdd("Mozilla/5.0 (Windows NT 10.0; Win64; x64)");
var bytes = await client.GetByteArrayAsync("https://upload.wikimedia.org/wikipedia/en/0/02/Homer_Simpson_2006.png");
var customCandidate = ResourceCandidate.Create(customResourceName, bytes);
priFile.ResourceCandidates.Add(customCandidate);

var localizedResourceName = "Resources/CustomLocalizedResource";
var qualiferEn = Qualifier.Create(QualifierAttribute.Language, "en-US");
var qualiferFr = Qualifier.Create(QualifierAttribute.Language, "fr-FR");
var candidateEn = ResourceCandidate.Create(localizedResourceName, ResourceValueType.String, "Hello!", new[] { qualiferEn });
var candidateFr = ResourceCandidate.Create(localizedResourceName, ResourceValueType.String, "Bonjour!", new[] { qualiferFr });
priFile.ResourceCandidates.Add(candidateEn);
priFile.ResourceCandidates.Add(candidateFr);

Saving the modified PRI file

using MrmLib;

...

var priFile = await PriFile.LoadAsync(...);

StorageFile file = ...;
await priFile.WriteAsync(file);

string filePath = ...;
await priFile.WriteAsync(filePath);

IOutputStream outputStream = ...;
await priFile.WriteAsync(outputStream);

byte[] priData = priFile.Write();