From 575c9f45ec0f338e1d22032b98773d3ff3386bc9 Mon Sep 17 00:00:00 2001
From: Robin Haberkorn <robin.haberkorn@googlemail.com>
Date: Tue, 4 Dec 2012 04:06:45 +0100
Subject: search-replace command with default replacement string (FR)

 * based on FS command
 * default replacement string is stored in global register "-"
---
 main.cpp   |  2 ++
 parser.cpp |  1 +
 search.cpp | 38 ++++++++++++++++++++++++++++++++++----
 search.h   | 23 ++++++++++++++++++-----
 4 files changed, 55 insertions(+), 9 deletions(-)

diff --git a/main.cpp b/main.cpp
index 11358ea..e23eca8 100644
--- a/main.cpp
+++ b/main.cpp
@@ -169,6 +169,8 @@ main(int argc, char **argv)
 	QRegisters::globals.initialize();
 	/* search string and status register */
 	QRegisters::globals.initialize("_");
+	/* replacement string register */
+	QRegisters::globals.initialize("-");
 	/* current buffer name and number ("*") */
 	QRegisters::globals.insert(new QRegisterBufferInfo());
 
diff --git a/parser.cpp b/parser.cpp
index b862973..3f59e16 100644
--- a/parser.cpp
+++ b/parser.cpp
@@ -1016,6 +1016,7 @@ StateFCommand::StateFCommand() : State()
 {
 	transitions['\0'] = this;
 	transitions['S'] = &States::replace;
+	transitions['R'] = &States::replacedefault;
 }
 
 State *
diff --git a/search.cpp b/search.cpp
index 6b76825..ceb8e54 100644
--- a/search.cpp
+++ b/search.cpp
@@ -1,3 +1,5 @@
+#include <string.h>
+
 #include <glib.h>
 #include <glib/gprintf.h>
 
@@ -9,10 +11,12 @@
 #include "search.h"
 
 namespace States {
-	StateSearch		search;
-	StateSearchAll		searchall;
-	StateReplace		replace;
-	StateReplace_insert	replace_insert;
+	StateSearch			search;
+	StateSearchAll			searchall;
+	StateReplace			replace;
+	StateReplace_insert		replace_insert;
+	StateReplaceDefault		replacedefault;
+	StateReplaceDefault_insert	replacedefault_insert;
 }
 
 /*
@@ -505,3 +509,29 @@ StateReplace::done(const gchar *str) throw (Error)
 
 	return &States::replace_insert;
 }
+
+State *
+StateReplaceDefault::done(const gchar *str) throw (Error)
+{
+	StateReplace::done(str);
+	return &States::replacedefault_insert;
+}
+
+State *
+StateReplaceDefault_insert::done(const gchar *str) throw (Error)
+{
+	BEGIN_EXEC(&States::start);
+
+	QRegister *replace_reg = QRegisters::globals["-"];
+
+	if (*str) {
+		replace_reg->undo_set_string();
+		replace_reg->set_string(str);
+	} else {
+		gchar *replace_str = replace_reg->get_string();
+		StateInsert::process(replace_str, strlen(replace_str));
+		g_free(replace_str);
+	}
+
+	return &States::start;
+}
diff --git a/search.h b/search.h
index 46e37e2..beb20d4 100644
--- a/search.h
+++ b/search.h
@@ -52,7 +52,7 @@ class StateReplace : public StateSearch {
 public:
 	StateReplace() : StateSearch(false) {}
 
-private:
+protected:
 	State *done(const gchar *str) throw (Error);
 };
 
@@ -61,11 +61,24 @@ private:
 	void initial(void) throw (Error) {}
 };
 
+class StateReplaceDefault : public StateReplace {
+private:
+	State *done(const gchar *str) throw (Error);
+};
+
+class StateReplaceDefault_insert : public StateInsert {
+private:
+	void initial(void) throw (Error) {}
+	State *done(const gchar *str) throw (Error);
+};
+
 namespace States {
-	extern StateSearch		search;
-	extern StateSearchAll		searchall;
-	extern StateReplace		replace;
-	extern StateReplace_insert	replace_insert;
+	extern StateSearch			search;
+	extern StateSearchAll			searchall;
+	extern StateReplace			replace;
+	extern StateReplace_insert		replace_insert;
+	extern StateReplaceDefault		replacedefault;
+	extern StateReplaceDefault_insert	replacedefault_insert;
 }
 
 #endif
-- 
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