+
+
+
+// ===========================================================================
+// wxJoin and wxSplit
+// ===========================================================================
+
+#include "wx/tokenzr.h"
+
+wxString wxJoin(const wxArrayString& arr, const wxChar sep, const wxChar escape)
+{
+ size_t count = arr.size();
+ if ( count == 0 )
+ return wxEmptyString;
+
+ wxString str;
+
+ // pre-allocate memory using the estimation of the average length of the
+ // strings in the given array: this is very imprecise, of course, but
+ // better than nothing
+ str.reserve(count*(arr[0].length() + arr[count-1].length()) / 2);
+
+ if ( escape == wxT('\0') )
+ {
+ // escaping is disabled:
+ for ( size_t i = 0; i < count; i++ )
+ {
+ if ( i )
+ str += sep;
+ str += arr[i];
+ }
+ }
+ else // use escape character
+ {
+ for ( size_t n = 0; n < count; n++ )
+ {
+ if ( n )
+ str += sep;
+
+ for ( wxString::const_iterator i = arr[n].begin(),
+ end = arr[n].end();
+ i != end;
+ ++i )
+ {
+ const wxChar ch = *i;
+ if ( ch == sep )
+ str += escape; // escape this separator
+ str += ch;
+ }
+ }
+ }
+
+ str.Shrink(); // release extra memory if we allocated too much
+ return str;
+}
+
+wxArrayString wxSplit(const wxString& str, const wxChar sep, const wxChar escape)
+{
+ if ( escape == wxT('\0') )
+ {
+ // simple case: we don't need to honour the escape character
+ return wxStringTokenize(str, sep, wxTOKEN_RET_EMPTY_ALL);
+ }
+
+ wxArrayString ret;
+ wxString curr;
+ wxChar prev = wxT('\0');
+
+ for ( wxString::const_iterator i = str.begin(),
+ end = str.end();
+ i != end;
+ ++i )
+ {
+ const wxChar ch = *i;
+
+ if ( ch == sep )
+ {
+ if ( prev == escape )
+ {
+ // remove the escape character and don't consider this
+ // occurrence of 'sep' as a real separator
+ *curr.rbegin() = sep;
+ }
+ else // real separator
+ {
+ ret.push_back(curr);
+ curr.clear();
+ }
+ }
+ else // normal character
+ {
+ curr += ch;
+ }
+
+ prev = ch;
+ }
+
+ // add the last token
+ if ( !curr.empty() || prev == sep )
+ ret.Add(curr);
+
+ return ret;
+}
projects / wxWidgets.git / blobdiff