/// <summary>
/// Generate the statements for sending a HttpRequestMessage.
/// </summary>
/// <returns><see cref="LocalDeclarationStatementSyntax"/> statement.</returns>
/// <remarks>
/// var response = await httpClient.SendAsync(request);
/// </remarks>
private LocalDeclarationStatementSyntax CreateSendStatement()
{
var invocationExpressionSyntax = RoslynExtensions.CreateInvocationExpression(
HttpClientVariableName,
"SendAsync",
SyntaxFactory.Argument(SyntaxFactory.IdentifierName(RequestVariableName)));
var awaitExpression = SyntaxFactory.AwaitExpression(invocationExpressionSyntax);
var declarationSyntax = RoslynExtensions.CreateVariableInitializationExpression("response", awaitExpression);
return(SyntaxFactory.LocalDeclarationStatement(declarationSyntax));
}
/// <summary>
/// Generate the statements for HttpClient handler configuration.
/// </summary>
/// <param name="curlOptions">The curl options.</param>
/// <param name="result">The result.</param>
/// <returns>Collection of <see cref="MemberDeclarationSyntax" />.</returns>
/// <remarks>
/// var handler = new HttpClientHandler();
/// handler.UseCookies = false;
/// </remarks>
private IEnumerable <MemberDeclarationSyntax> ConfigureHandlerStatements(
CurlOptions curlOptions,
ConvertResult <string> result)
{
var statementSyntaxs = new LinkedList <MemberDeclarationSyntax>();
var handlerInitialization = RoslynExtensions.CreateVariableInitializationExpression(
HandlerVariableName,
RoslynExtensions.CreateObjectCreationExpression(nameof(HttpClientHandler)));
statementSyntaxs.AddLast(
SyntaxFactory.GlobalStatement(SyntaxFactory.LocalDeclarationStatement(handlerInitialization)));
if (curlOptions.HasCookies)
{
var memberAssignmentExpression = RoslynExtensions.CreateMemberAssignmentExpression(
HandlerVariableName,
"UseCookies",
SyntaxFactory.LiteralExpression(SyntaxKind.FalseLiteralExpression));
statementSyntaxs.AddLast(
SyntaxFactory.GlobalStatement(SyntaxFactory.ExpressionStatement(memberAssignmentExpression)));
}
if (curlOptions.HasProxy)
{
if (IsSupportedProxy(curlOptions.ProxyUri))
{
var memberAssignmentExpression = RoslynExtensions.CreateMemberAssignmentExpression(
HandlerVariableName,
"Proxy",
RoslynExtensions.CreateObjectCreationExpression("WebProxy", RoslynExtensions.CreateStringLiteralArgument(curlOptions.ProxyUri.ToString())));
statementSyntaxs.AddLast(
SyntaxFactory.GlobalStatement(SyntaxFactory.ExpressionStatement(memberAssignmentExpression)));
}
else
{
result.Warnings.Add($"Proxy scheme \"{curlOptions.ProxyUri.Scheme}\" is not supported");
}
}
statementSyntaxs.TryAppendWhiteSpaceAtEnd();
return(statementSyntaxs);
}
/// <summary>
/// Generates the basic authorization encoding statement.
/// </summary>
/// <param name="options">The options.</param>
/// <returns><see cref="LocalDeclarationStatementSyntax"/> statement.</returns>
/// <remarks>
/// var base64authorization = Convert.ToBase64String(Encoding.ASCII.GetBytes("username:password"));
/// </remarks>
private LocalDeclarationStatementSyntax CreateBasicAuthorizationEncodingStatement(CurlOptions options)
{
var asciiGetBytesInvocation = RoslynExtensions.CreateInvocationExpression(
"Encoding",
"ASCII",
"GetBytes",
RoslynExtensions.CreateStringLiteralArgument(options.UserPasswordPair));
var convertToBase64Invocation = RoslynExtensions.CreateInvocationExpression(
"Convert",
"ToBase64String",
SyntaxFactory.Argument(asciiGetBytesInvocation));
var declarationSyntax = RoslynExtensions.CreateVariableInitializationExpression(
Base64AuthorizationVariableName,
convertToBase64Invocation);
return(SyntaxFactory.LocalDeclarationStatement(declarationSyntax));
}
private IEnumerable <MemberDeclarationSyntax> ConfigureHandlerStatements(CurlOptions curlOptions)
{
var statementSyntaxs = new LinkedList <MemberDeclarationSyntax>();
var handlerInitialization = RoslynExtensions.CreateVariableInitializationExpression(
HandlerVariableName,
RoslynExtensions.CreateObjectCreationExpression(nameof(HttpClientHandler)));
statementSyntaxs.AddLast(
SyntaxFactory.GlobalStatement(SyntaxFactory.LocalDeclarationStatement(handlerInitialization)));
if (curlOptions.HasCookies)
{
var memberAssignmentExpression = RoslynExtensions.CreateMemberAssignmentExpression(
HandlerVariableName,
"UseCookies",
SyntaxFactory.LiteralExpression(SyntaxKind.FalseLiteralExpression));
statementSyntaxs.AddLast(
SyntaxFactory.GlobalStatement(SyntaxFactory.ExpressionStatement(memberAssignmentExpression))
.AppendWhiteSpace());
}
return(statementSyntaxs);
}
/// <summary>
/// Generates the multipart content statements.
/// </summary>
/// <param name="curlOptions">The curl options.</param>
/// <returns>Collection of <see cref="StatementSyntax"/>.</returns>
/// <remarks>
/// var multipartContent = new MultipartFormDataContent();
/// multipartContent.Add(new StringContent("John"), "name");
/// multipartContent.Add(new ByteArrayContent(File.ReadAllBytes("D:\\text.txt")), "shoesize", Path.GetFileName("D:\\text.txt"));
/// request.Content = multipartContent;
/// </remarks>
private IEnumerable <StatementSyntax> CreateMultipartContentStatements(CurlOptions curlOptions)
{
var statements = new LinkedList <StatementSyntax>();
const string MultipartVariableName = "multipartContent";
const string MultipartAddMethodName = "Add";
statements.AddLast(
SyntaxFactory.LocalDeclarationStatement(
RoslynExtensions.CreateVariableFromNewObjectExpression(
MultipartVariableName,
nameof(MultipartFormDataContent))));
int fileCounter = 1;
foreach (var data in curlOptions.FormData)
{
StatementSyntax addStatement;
if (data.Type == UploadDataType.Inline)
{
var contentExpression = RoslynExtensions.CreateObjectCreationExpression(
nameof(StringContent),
RoslynExtensions.CreateStringLiteralArgument(data.Content));
addStatement = SyntaxFactory.ExpressionStatement(
RoslynExtensions.CreateInvocationExpression(
MultipartVariableName,
MultipartAddMethodName,
SyntaxFactory.Argument(contentExpression),
RoslynExtensions.CreateStringLiteralArgument(data.Name)));
}
else if (data.Type == UploadDataType.BinaryFile)
{
var getFileNameArgument = string.IsNullOrEmpty(data.FileName)
? SyntaxFactory.Argument(
RoslynExtensions.CreateInvocationExpression(
nameof(Path),
nameof(Path.GetFileName),
RoslynExtensions.CreateStringLiteralArgument(data.Content)))
: RoslynExtensions.CreateStringLiteralArgument(data.FileName);
// If the file has content type, we should add it to ByteArrayContent headers
var contentExpression = CreateNewByteArrayContentExpression(data.Content);
ExpressionSyntax contentArgumentExpression;
if (string.IsNullOrEmpty(data.ContentType))
{
contentArgumentExpression = contentExpression;
}
else
{
var byteArrayVariableName = "file" + fileCounter;
var byteArrayContentInitialization = RoslynExtensions.CreateVariableInitializationExpression(byteArrayVariableName, contentExpression);
statements.AddLast(SyntaxFactory.LocalDeclarationStatement(byteArrayContentInitialization));
statements.AddLast(
SyntaxFactory.ExpressionStatement(
RoslynExtensions.CreateInvocationExpression(
byteArrayVariableName,
"Headers",
"Add",
RoslynExtensions.CreateStringLiteralArgument("Content-Type"),
RoslynExtensions.CreateStringLiteralArgument(data.ContentType))));
contentArgumentExpression = SyntaxFactory.IdentifierName(byteArrayVariableName);
}
addStatement = SyntaxFactory.ExpressionStatement(
RoslynExtensions.CreateInvocationExpression(
MultipartVariableName,
MultipartAddMethodName,
SyntaxFactory.Argument(contentArgumentExpression),
RoslynExtensions.CreateStringLiteralArgument(data.Name),
getFileNameArgument));
}
else
{
var contentExpression = RoslynExtensions.CreateObjectCreationExpression(
nameof(StringContent),
SyntaxFactory.Argument(CreateFileReadAllTextExpression(data.Content)));
addStatement = SyntaxFactory.ExpressionStatement(
RoslynExtensions.CreateInvocationExpression(
MultipartVariableName,
MultipartAddMethodName,
SyntaxFactory.Argument(contentExpression),
RoslynExtensions.CreateStringLiteralArgument(data.Name)));
}
statements.AddLast(addStatement);
}
statements.AddLast(SyntaxFactory.ExpressionStatement(
RoslynExtensions.CreateMemberAssignmentExpression(
RequestVariableName,
RequestContentPropertyName,
SyntaxFactory.IdentifierName(MultipartVariableName))));
statements.TryAppendWhiteSpaceAtEnd();
return(statements);
}