private static string LoadFile(string basicFilePath, DslScript dslScript, int begin)
{
var filePaths = new List <string> {
basicFilePath
};
string basicFileExtension = Path.GetExtension(basicFilePath);
if (basicFileExtension.Equals(".sql", StringComparison.OrdinalIgnoreCase))
{
var directory = Path.GetDirectoryName(basicFilePath);
var fileName = Path.GetFileNameWithoutExtension(basicFilePath);
if (string.IsNullOrWhiteSpace(fileName))
{
throw new DslSyntaxException("Referenced empty file name (" + basicFilePath + ") in DSL script. " + dslScript.ReportPosition(begin));
}
// Look for SQL dialect-specific files before the generic SQL file:
filePaths.Insert(0, Path.Combine(directory, fileName + "." + SqlUtility.DatabaseLanguage + basicFileExtension));
filePaths.Insert(1, Path.Combine(directory, fileName + " (" + SqlUtility.DatabaseLanguage + ")" + basicFileExtension));
}
foreach (var filePath in filePaths)
{
if (File.Exists(filePath))
{
return(File.ReadAllText(filePath, Encoding.Default));
}
}
throw new DslSyntaxException("Cannot find the extension file referenced in DSL script. " + dslScript.ReportPosition(begin) + "\r\nLooking for files:\r\n" + string.Join("\r\n", filePaths));
}
private static string ReadExternalText(DslScript dslScript, ref int end)
{
string script = dslScript.Script;
int begin = end;
end++;
while (end < script.Length && script[end] != '>' && !invalidPathChars.Contains(script[end]))
{
end++;
}
if (end >= script.Length)
{
throw new DslSyntaxException("Unexpected end of script within external text reference. Missing closing character: '>'." + dslScript.ReportPosition(end));
}
if (script[end] != '>')
{
throw new DslSyntaxException("Invalid filename character within external text reference. " + dslScript.ReportPosition(end));
}
end++; // Skip closing character.
string basicFilePath = script.Substring(begin + 1, end - begin - 2);
string dslScriptFolder = Path.GetDirectoryName(dslScript.Path);
return(LoadFile(Path.Combine(dslScriptFolder, basicFilePath), dslScript, begin));
}
private static string ReadQuotedString(DslScript dslScript, ref int end)
{
string script = dslScript.Script;
char quote = script[end];
int begin = end;
end++;
while (true)
{
while (end < script.Length && script[end] != quote)
{
end++;
}
if (end >= script.Length)
{
throw new DslSyntaxException("Unexpected end of script within quoted string. Missing closing character: " + quote + ". " + dslScript.ReportPosition(begin));
}
if (end + 1 < script.Length && script[end + 1] == quote)
{
// Two quote characters make escape sequence for a quote within the string:
end += 2;
continue;
}
else
{
// Single quote ends string:
end++;
break;
}
}
return(script.Substring(begin + 1, end - begin - 2).Replace(new string(quote, 2), new string(quote, 1)));
}
private static string ReadQuotedString(DslScript dslScript, ref int end)
{
string script = dslScript.Script;
char quote = script[end];
int begin = end;
end++;
while (true)
{
while (end < script.Length && script[end] != quote)
end++;
if (end >= script.Length)
throw new DslSyntaxException("Unexpected end of script within quoted string. Missing closing character: " + quote + ". " + dslScript.ReportPosition(begin));
if (end + 1 < script.Length && script[end + 1] == quote)
{
// Two quote characters make escape sequence for a quote within the string:
end += 2;
continue;
}
else
{
// Single quote ends string:
end++;
break;
}
}
return script.Substring(begin + 1, end - begin - 2).Replace(new string(quote, 2), new string(quote, 1));
}
private static string ReadExternalText(DslScript dslScript, ref int end)
{
string script = dslScript.Script;
int begin = end;
end++;
while (end < script.Length && script[end] != '>' && !invalidPathChars.Contains(script[end]))
end++;
if (end >= script.Length)
throw new DslSyntaxException("Unexpected end of script within external text reference. Missing closing character: '>'." + dslScript.ReportPosition(end));
if (script[end] != '>')
throw new DslSyntaxException("Invalid filename character within external text reference. " + dslScript.ReportPosition(end));
end++; // Skip closing character.
string basicFilePath = script.Substring(begin + 1, end - begin - 2);
string dslScriptFolder = Path.GetDirectoryName(dslScript.Path);
return LoadFile(Path.Combine(dslScriptFolder, basicFilePath), dslScript, begin);
}
private static string LoadFile(string basicFilePath, DslScript dslScript, int begin)
{
var filePaths = new List<string> { basicFilePath };
string basicFileExtension = Path.GetExtension(basicFilePath);
if (basicFileExtension.Equals(".sql", StringComparison.OrdinalIgnoreCase))
{
var directory = Path.GetDirectoryName(basicFilePath);
var fileName = Path.GetFileNameWithoutExtension(basicFilePath);
if (string.IsNullOrWhiteSpace(fileName))
throw new DslSyntaxException("Referenced empty file name (" + basicFilePath + ") in DSL script. " + dslScript.ReportPosition(begin));
// Look for SQL dialect-specific files before the generic SQL file:
filePaths.Insert(0, Path.Combine(directory, fileName + "." + SqlUtility.DatabaseLanguage + basicFileExtension));
filePaths.Insert(1, Path.Combine(directory, fileName + " (" + SqlUtility.DatabaseLanguage + ")" + basicFileExtension));
}
foreach (var filePath in filePaths)
if (File.Exists(filePath))
return File.ReadAllText(filePath, Encoding.Default);
throw new DslSyntaxException("Cannot find the extension file referenced in DSL script. " + dslScript.ReportPosition(begin) + "\r\nLooking for files:\r\n" + string.Join("\r\n", filePaths));
}