private void Reemplazar(NoteBuffer b, string s, string r)
{
/*
* Changes every occurrences of string s for r in buffer b.
* Why three passess? Because TextIter left invalidated every time I modify
* content of a note. I use marks to postprocessing deletions and insertions.
* Despite that, still invalidation warnings happens.
*/
bool found;
Gtk.TextIter w; // Where to insert "r".
List<Gtk.TextMark> inserciones = new List<Gtk.TextMark>();
// Marks to insert.
Gtk.TextIter ss; // Start of slice containing the occurrence
Gtk.TextIter es; // End of slice
List<Gtk.TextMark> comienzos = new List<Gtk.TextMark>();
List<Gtk.TextMark> finales = new List<Gtk.TextMark>();
int i = 0;
int j;
Gtk.TextIter pos;
// First pass. Finding...
pos = b.StartIter;
do{
found = pos.ForwardSearch(s, Gtk.TextSearchFlags.TextOnly,
out ss, out es, b.EndIter);
if (found){
inserciones.Add(b.CreateMark("check" + i.ToString(), ss, false));
comienzos.Add(b.CreateMark("comienzo" + i.ToString(), ss, false));
finales.Add(b.CreateMark("final" + i.ToString(), es, false));
i++;
pos = es; // Search is started after «s» in next iteration
}
}while (found);
// Second pass. Removing...
for (j = 0; j < i; j++){
ss = b.GetIterAtMark(comienzos[j]);
es = b.GetIterAtMark(finales[j]);
b.Delete(ref ss, ref es);
}
// Third pass. Inserting...
for (j = 0; j < i; j++){
w = b.GetIterAtMark(inserciones[j]);
// Special case. If "Something()" in r, is a method, not a string.
string methodName = esMetodo(r);
if (methodName != null)
runMethod(methodName, w);
else
b.Insert(ref w, r);
}
}
List<Match> FindMatchesInBuffer (NoteBuffer buffer, string [] words)
{
List<Match> matches = new List<Match> ();
string note_text = buffer.GetSlice (buffer.StartIter,
buffer.EndIter,
false /* hidden_chars */);
note_text = note_text.ToLower ();
foreach (string word in words) {
int idx = 0;
bool this_word_found = false;
if (word == String.Empty)
continue;
while (true) {
idx = note_text.IndexOf (word, idx);
if (idx == -1) {
if (this_word_found)
break;
else
return null;
}
this_word_found = true;
Gtk.TextIter start = buffer.GetIterAtOffset (idx);
Gtk.TextIter end = start;
end.ForwardChars (word.Length);
Match match = new Match ();
match.Buffer = buffer;
match.StartMark = buffer.CreateMark (null, start, false);
match.EndMark = buffer.CreateMark (null, end, true);
match.Highlighting = false;
matches.Add (match);
idx += word.Length;
}
}
if (matches.Count == 0)
return null;
else
return matches;
}