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, 15 insertions, 1 deletions

diff --git a/src/main.cpp b/src/main.cpp
index 79cb78b..7ad4d80 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -71,7 +71,7 @@ QRegisterTable QRegisters::globals;
 Ring ring;
 
 namespace Flags {
-	tecoInt ed = 0;
+	tecoInt ed = ED_AUTOEOL;
 }
 
 static gchar *eval_macro = NULL;
@@ -88,6 +88,20 @@ static gpointer g_realloc_exception(gpointer mem, gsize n_bytes);
 static void sigint_handler(int signal);
 }
 
+const gchar *
+get_eol_seq(gint eol_mode)
+{
+	switch (eol_mode) {
+	case SC_EOL_CRLF:
+		return "\r\n";
+	case SC_EOL_CR:
+		return "\r";
+	case SC_EOL_LF:
+	default:
+		return "\n";
+	}
+}
+
 #ifdef G_OS_WIN32
 
 /*