ArrayList SplitMetadata(string text)
{
ArrayList phase1 = new ArrayList();
Match m;
m = MetadataRegex.Match(text);
while (m.Success)
{
string name = null, meta = null;
MetadataReference mr;
if (m.Groups [MetadataRegex.GroupNumberFromName("name")].Success)
{
name = m.Groups [MetadataRegex.GroupNumberFromName("name")].Value;
}
meta = m.Groups [MetadataRegex.GroupNumberFromName("meta")].Value;
mr = new MetadataReference(text.Substring(m.Groups [0].Index, m.Groups [0].Length),
name, meta, m.Groups [0].Index, m.Groups [0].Length);
phase1.Add(mr);
m = m.NextMatch();
}
ArrayList phase2 = new ArrayList();
int last_end = -1;
int end = text.Length - 1;
foreach (MetadataReference mr in phase1)
{
int a, b;
a = last_end;
b = mr.Start;
if (b - a - 1 > 0)
{
phase2.Add(text.Substring(a + 1, b - a - 1));
}
last_end = mr.End;
phase2.Add(mr);
}
if (last_end < end)
{
phase2.Add(text.Substring(last_end + 1, end - last_end));
}
return(phase2);
}
// Split: Split on ';'
// Eg. Property values don't need to be split
//
// AllowItems: if false, item refs should not be treated as item refs!
// it converts them to strings in the final expressionCollection
//
// AllowMetadata: same as AllowItems, for metadata
public void Parse(string expression, ParseOptions options)
{
bool split = (options & ParseOptions.Split) == ParseOptions.Split;
bool allowItems = (options & ParseOptions.AllowItems) == ParseOptions.AllowItems;
bool allowMd = (options & ParseOptions.AllowMetadata) == ParseOptions.AllowMetadata;
expression = expression.Replace('\\', Path.DirectorySeparatorChar);
string [] parts;
if (split)
{
parts = expression.Split(new char [] { ';' }, StringSplitOptions.RemoveEmptyEntries);
}
else
{
parts = new string [] { expression }
};
List <ArrayList> p1 = new List <ArrayList> (parts.Length);
List <ArrayList> p2 = new List <ArrayList> (parts.Length);
List <ArrayList> p3 = new List <ArrayList> (parts.Length);
Prepare(p1, parts.Length);
Prepare(p2, parts.Length);
Prepare(p3, parts.Length);
for (int i = 0; i < parts.Length; i++)
{
p1 [i] = SplitItems(parts [i], allowItems);
}
for (int i = 0; i < parts.Length; i++)
{
p2 [i] = new ArrayList();
foreach (object o in p1[i])
{
if (o is string)
{
p2 [i].AddRange(SplitProperties((string)o));
}
else
{
p2 [i].Add(o);
}
}
}
for (int i = 0; i < parts.Length; i++)
{
p3 [i] = new ArrayList();
foreach (object o in p2[i])
{
if (o is string)
{
p3 [i].AddRange(SplitMetadata((string)o));
}
else
{
p3 [i].Add(o);
}
}
}
CopyToExpressionCollection(p3, allowItems, allowMd);
}
void Prepare(List <ArrayList> l, int length)
{
for (int i = 0; i < length; i++)
{
l.Add(null);
}
}
void CopyToExpressionCollection(List <ArrayList> lists, bool allowItems, bool allowMd)
{
for (int i = 0; i < lists.Count; i++)
{
foreach (object o in lists[i])
{
if (o is string)
{
expressionCollection.Add(Utilities.Unescape((string)o));
}
else if (!allowItems && o is ItemReference)
{
expressionCollection.Add(((ItemReference)o).OriginalString);
}
else if (!allowMd && o is MetadataReference)
{
expressionCollection.Add(((MetadataReference)o).OriginalString);
}
else if (o is IReference)
{
expressionCollection.Add((IReference)o);
}
}
if (i < lists.Count - 1)
{
expressionCollection.Add(";");
}
}
}
ArrayList SplitItems(string text, bool allowItems)
{
ArrayList phase1 = new ArrayList();
Match m;
m = ItemRegex.Match(text);
while (m.Success)
{
string name = null, transform = null, separator = null;
ItemReference ir;
name = m.Groups [ItemRegex.GroupNumberFromName("itemname")].Value;
if (m.Groups [ItemRegex.GroupNumberFromName("has_transform")].Success)
{
transform = m.Groups [ItemRegex.GroupNumberFromName("transform")].Value;
}
if (m.Groups [ItemRegex.GroupNumberFromName("has_separator")].Success)
{
separator = m.Groups [ItemRegex.GroupNumberFromName("separator")].Value;
}
ir = new ItemReference(text.Substring(m.Groups [0].Index, m.Groups [0].Length),
name, transform, separator, m.Groups [0].Index, m.Groups [0].Length);
phase1.Add(ir);
m = m.NextMatch();
}
ArrayList phase2 = new ArrayList();
int last_end = -1;
int end = text.Length - 1;
foreach (ItemReference ir in phase1)
{
int a, b;
a = last_end;
b = ir.Start;
if (b - a - 1 > 0)
{
phase2.Add(text.Substring(a + 1, b - a - 1));
}
last_end = ir.End;
phase2.Add(ir);
}
if (last_end < end)
{
phase2.Add(text.Substring(last_end + 1, end - last_end));
}
return(phase2);
}
ArrayList SplitProperties(string text)
{
ArrayList phase1 = new ArrayList();
Match m;
m = PropertyRegex.Match(text);
while (m.Success)
{
string name = null;
PropertyReference pr;
name = m.Groups [PropertyRegex.GroupNumberFromName("name")].Value;
pr = new PropertyReference(name, m.Groups [0].Index, m.Groups [0].Length);
phase1.Add(pr);
m = m.NextMatch();
}
ArrayList phase2 = new ArrayList();
int last_end = -1;
int end = text.Length - 1;
foreach (PropertyReference pr in phase1)
{
int a, b;
a = last_end;
b = pr.Start;
if (b - a - 1 > 0)
{
phase2.Add(text.Substring(a + 1, b - a - 1));
}
last_end = pr.End;
phase2.Add(pr);
}
if (last_end < end)
{
phase2.Add(text.Substring(last_end + 1, end - last_end));
}
return(phase2);
}
ArrayList SplitMetadata(string text)
{
ArrayList phase1 = new ArrayList();
Match m;
m = MetadataRegex.Match(text);
while (m.Success)
{
string name = null, meta = null;
MetadataReference mr;
if (m.Groups [MetadataRegex.GroupNumberFromName("name")].Success)
{
name = m.Groups [MetadataRegex.GroupNumberFromName("name")].Value;
}
meta = m.Groups [MetadataRegex.GroupNumberFromName("meta")].Value;
mr = new MetadataReference(text.Substring(m.Groups [0].Index, m.Groups [0].Length),
name, meta, m.Groups [0].Index, m.Groups [0].Length);
phase1.Add(mr);
m = m.NextMatch();
}
ArrayList phase2 = new ArrayList();
int last_end = -1;
int end = text.Length - 1;
foreach (MetadataReference mr in phase1)
{
int a, b;
a = last_end;
b = mr.Start;
if (b - a - 1 > 0)
{
phase2.Add(text.Substring(a + 1, b - a - 1));
}
last_end = mr.End;
phase2.Add(mr);
}
if (last_end < end)
{
phase2.Add(text.Substring(last_end + 1, end - last_end));
}
return(phase2);
}