/// <summary>
/// Reads and reflects the given VB Classic text file into a usable form.
/// </summary>
/// <param name="partitionedFile">An instance of <see cref="VbPartitionedFile"/> representing the VB Classic module to reflect.</param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"><paramref name="partitionedFile"/> was null.</exception>
/// <exception cref="InvalidOperationException">There was no analyzer considered fitting for the underlying file.</exception>
public static IVbModule GetReflectedModule(VbPartitionedFile partitionedFile)
{
if (partitionedFile == null)
{
throw new ArgumentNullException("partitionedFile");
}
if (Tokenizer == null)
{
throw new InvalidOperationException("No tokenizer defined for analyzing the file!");
}
IReadOnlyList<IToken> tokens = Tokenizer.GetTokens(partitionedFile.GetMergedContent());
TokenStreamReader reader = new TokenStreamReader(tokens);
IAnalyzer analyzer = null;
if (!AnalyzerFactory.TryGetAnalyzerForFile(reader, out analyzer))
{
// TODO: Dedicated exception for this.
throw new InvalidOperationException("Could not analyze the given file!");
}
reader.Rewind();
return analyzer.Analyze(reader);
}
/// <summary>
/// Reads the provided content, which is assumed to be a VB6 module file, and splits it into a "header" and a "code" part.
/// </summary>
/// <param name="content">The source code contents of a VB6 module file.</param>
/// <returns>An instance of <see cref="VbPartitionedFile"/> that contains the provided content.</returns>
/// <exception cref="ArgumentNullException"><paramref name="content"/> is null.</exception>
public static VbPartitionedFile GetPartitionedFile(string content)
{
if (content == null)
{
throw new ArgumentNullException("content");
}
VbPartitionedFile file = new VbPartitionedFile();
/* VB6-files are slightly odd. They don't really have a common file format (only a somewhat consistent layout).
*/
StringBuilder sb = new StringBuilder();
// Keep the stream open for users to close.
string lineBefore = null;
string line = null;
using (StringReader reader = new StringReader(content))
{
while ((line = reader.ReadLine()) != null)
{
/* If the last line was an Attribute and the current line represents user code, flush the current contents into the Preamble.
* This is really basic here and should be refined if some files are different.
*/
if (lineBefore != null && lineBefore.StartsWith("Attribute", StringComparison.OrdinalIgnoreCase))
{
if ((string.IsNullOrWhiteSpace(line) || !line.StartsWith("Attribute", StringComparison.OrdinalIgnoreCase)) &&
file.Preamble == null)
{
file.Preamble = sb.ToString();
sb.Clear();
}
}
sb.AppendLine(line);
lineBefore = line;
}
}
file.Source = sb.ToString();
return(file);
}
/// <summary>
/// Reads the provided content, which is assumed to be a VB6 module file, and splits it into a "header" and a "code" part.
/// </summary>
/// <param name="content">The source code contents of a VB6 module file.</param>
/// <returns>An instance of <see cref="VbPartitionedFile"/> that contains the provided content.</returns>
/// <exception cref="ArgumentNullException"><paramref name="content"/> is null.</exception>
public static VbPartitionedFile GetPartitionedFile(string content)
{
if (content == null)
{
throw new ArgumentNullException("content");
}
VbPartitionedFile file = new VbPartitionedFile();
/* VB6-files are slightly odd. They don't really have a common file format (only a somewhat consistent layout).
*/
StringBuilder sb = new StringBuilder();
// Keep the stream open for users to close.
string lineBefore = null;
string line = null;
using (StringReader reader = new StringReader(content))
{
while ((line = reader.ReadLine()) != null)
{
/* If the last line was an Attribute and the current line represents user code, flush the current contents into the Preamble.
* This is really basic here and should be refined if some files are different.
*/
if (lineBefore != null && lineBefore.StartsWith("Attribute", StringComparison.OrdinalIgnoreCase))
{
if ((string.IsNullOrWhiteSpace(line) || !line.StartsWith("Attribute", StringComparison.OrdinalIgnoreCase))
&& file.Preamble == null)
{
file.Preamble = sb.ToString();
sb.Clear();
}
}
sb.AppendLine(line);
lineBefore = line;
}
}
file.Source = sb.ToString();
return file;
}
private IVbModule ParseModule(VbPartitionedFile partFile)
{
return ModuleReflector.GetReflectedModule(partFile);
}