private static EscapingOptions GetCsvEscapingOptions(CsvParams csvParams)
{
var ret = new EscapingOptions();
string quoteCharRegex = Regex.Escape(new string(csvParams.QuoteChar, 1));
var escapeFmt =
"CSV_UNESCAPE({0}, '"
+ (csvParams.QuoteChar == '\'' ? @"\'" : ("" + csvParams.QuoteChar))
+ "')";
if (csvParams.Quoting == CsvParams.QuotingMode.Always)
{
ret.QuoteRegex = string.Format("{1}{0} # quoting always", quoteCharRegex, Environment.NewLine);
ret.EscapingFormat = escapeFmt;
}
else if (csvParams.Quoting == CsvParams.QuotingMode.Auto)
{
ret.QuoteRegex = string.Format("{1}{0}? # possible quoting", quoteCharRegex, Environment.NewLine);
ret.EscapingFormat = escapeFmt;
}
else
{
ret.QuoteRegex = "";
ret.EscapingFormat = "{0}";
}
return(ret);
}
private static string GetThreadCode(List <CapturedNodeRegex> threadRegexps, ImportLog log, EscapingOptions escaping)
{
Func <bool, CapturedNodeRegex[]> findThreads = (isConditional) =>
threadRegexps.Where(re => ((re.Regex.Flags & SyntaxAnalysis.NodeRegexFlags.IsConditional) != 0) == isConditional).ToArray();
Func <CapturedNodeRegex, string> getCode = re =>
string.Format("if ({2}.Length > 0) return {1};{0}", Environment.NewLine, string.Format(escaping.EscapingFormat, re.CaptureName), re.CaptureName);
var concreteThreads = findThreads(false);
var conditionalThreads = findThreads(true);
StringBuilder threadCode = new StringBuilder();
if (concreteThreads.Length > 0)
{
threadCode.AppendFormat("{0}return StringSlice.Empty;", getCode(concreteThreads[0]));
ReportRendererUsage(concreteThreads[0], "thread", log);
}
else
{
foreach (var re in conditionalThreads)
{
ReportRendererUsage(re, "thread", log);
threadCode.Append(getCode(re));
}
threadCode.Append("return StringSlice.Empty;");
}
return(threadCode.ToString());
}
private static string GetBodyCode(List <CapturedNodeRegex> otherRegexps, ImportLog log, EscapingOptions escaping)
{
StringBuilder bodyCode = new StringBuilder();
bodyCode.AppendFormat(escaping.EscapingFormat, "body");
foreach (var otherRe in otherRegexps.SkipWhile(IsSkipableBodyRe).Reverse <CapturedNodeRegex>())
{
bodyCode.Insert(0, "CONCAT(" + string.Format(escaping.EscapingFormat, otherRe.CaptureName) + ", ");
bodyCode.Append(")");
}
return(bodyCode.ToString());
}
public ConfigBuilder(ImportLog log, EscapingOptions escaping)
{
this.log = log;
this.escaping = escaping;
}