internal static ProtoFileSummary Load(string file)
{
var lines = File.ReadAllLines(file);
var package = lines.FirstOrDefault(line => line.StartsWith("package "));
if (package is object)
{
package = package.Substring("package ".Length).TrimEnd(';');
}
var importDirectories = lines
.Where(line => line.StartsWith("import "))
.Select(line => line.Substring("import ".Length).Trim(ImportAndOptionValueTrimChars))
.Select(file => Path.GetDirectoryName(file).Replace('\\', '/'))
.Distinct()
.OrderBy(import => import)
.ToList();
var options = lines
.Where(line => line.StartsWith("option "))
.Select(line => line.Substring("option ".Length).Split('=', 2))
.Select(bits => (key: bits[0].Trim(), value: bits[1].Trim(ImportAndOptionValueTrimChars)))
.Where(pair => LibraryOptions.Contains(pair.key))
.ToDictionary(pair => pair.key, pair => pair.value);
return(new ProtoFileSummary(package, importDirectories, options));
}
