implemented automatic EOL translation support

 * activated via bit 4 of the ED flag (enabled by default)
 * automatic EOL guessing on file loading and translation to LFs.
   * works with files that have inconsistent EOL sequences.
 * automatic translation to original EOL sequences on file saving
   * works with inconsistent EOL sequences in the buffer.
     This should usually not happen if the file was read in with
     automatic EOL translation enabled.
 * also works with the EC and EG commands
 * performance is OK, depending on the file being translated.
   When reading files with UNIX EOLs, the overhead is minimal
   typically-sized files. For DOS EOLs the overhead is larger
   but still acceptable.
 * Return (line feed) is now an immediate editing command.
   This centralizes EOL sequence insertion.
   Later, other features like auto-indent could be added to
   the editing command.
 * get_eol() has been moved to main.cpp (now called
   get_eol_seq()
 * Warn if file ownership could not be preserved when
   saving files.
 * IOView has been almost completely rewritten based
   on GIOChannels. The EOL translation code is also in IOView.

1 files changed, 39 insertions, 0 deletions

diff --git a/src/qregisters.cpp b/src/qregisters.cpp
index acb12cf..e792fc0 100644
--- a/src/qregisters.cpp
+++ b/src/qregisters.cpp
@@ -252,6 +252,40 @@ QRegister::execute(bool locals)
 }
 
 void
+QRegister::undo_set_eol_mode(void)
+{
+	if (!must_undo)
+		return;
+
+	/*
+	 * Necessary, so that upon rubout the
+	 * string's parameters are restored.
+	 */
+	string.update(QRegisters::view);
+
+	if (QRegisters::current && QRegisters::current->must_undo)
+		QRegisters::current->string.undo_edit(QRegisters::view);
+
+	QRegisters::view.undo_ssm(SCI_SETEOLMODE,
+	                          QRegisters::view.ssm(SCI_GETEOLMODE));
+
+	string.undo_edit(QRegisters::view);
+}
+
+void
+QRegister::set_eol_mode(gint mode)
+{
+	if (QRegisters::current)
+		QRegisters::current->string.update(QRegisters::view);
+
+	string.edit(QRegisters::view);
+	QRegisters::view.ssm(SCI_SETEOLMODE, mode);
+
+	if (QRegisters::current)
+		QRegisters::current->string.edit(QRegisters::view);
+}
+
+void
 QRegister::load(const gchar *filename)
 {
 	undo_set_string();
@@ -263,6 +297,11 @@ QRegister::load(const gchar *filename)
 	string.reset();
 
 	/*
+	 * IOView::load() might change the EOL style.
+	 */
+	undo_set_eol_mode();
+
+	/*
 	 * undo_set_string() pushes undo tokens that restore
 	 * the previous document in the view.
 	 * So if loading fails, QRegisters::current will be