adapt line editor

2 files changed, 70 insertions, 1 deletions

diff --git a/include/eval.h b/include/eval.h
index 5ccecf4..6268403 100644
--- a/include/eval.h
+++ b/include/eval.h
@@ -22,7 +22,7 @@ inline T_pipe T_pipe_not_pipe;
 int eval_exe(const std::string &s, bool is_async);
 int eval_exe(const std::string &s, bool is_async, const T_lexer *lexer_instance, size_t i, const T_pipe &pi = T_pipe_not_pipe);
 int eval_tree_cd(size_t i, const T_lexer &lexer_instance, bool inside_subshell, T_pipe pi = T_pipe_not_pipe);
-void eval(char *cmdline);
+void eval(const std::string &s);
 void eval_err(int err);
 
 }
diff --git a/include/line/line_editor.h b/include/line/line_editor.h
new file mode 100644
index 0000000..a97b09c
--- /dev/null
+++ b/include/line/line_editor.h
@@ -0,0 +1,69 @@
+#pragma once
+
+#include <termios.h>
+#include <string>
+
+#include "line/type.h"
+
+namespace ov4
+{
+
+// mode
+inline termios attr;
+inline bool raw_enabled = false;
+
+void disable_raw();
+void enable_raw();
+void editor_exit(int code);
+
+class T_line_editor
+{
+public:
+    // cursor
+
+    // 1-based
+    int cursor_row = 1;
+    int cursor_col = 1;
+    int prompt_pos = 1;
+    int window_size_row = 24;
+    int window_size_col = 80;
+
+    // 0-based index
+    int buffer_index_cursor = 0;
+    // index [begin, end] is displayed
+    // NB: CLOSE interval
+    int _buffer_index_display_begin = 0;
+    //int buffer_index_display_end;
+
+    std::string line_buffer;
+
+    void print_override(const std::string &s);
+    void move_cursor(char c);
+    void cursor_input_char(char c);
+    void update_window_size();
+    void move_cursor(T_cursor_movement_direction d);
+    void switch_history(T_cursor_movement_direction d);
+    void reset_editor();
+    void cursor_skip_prompt();
+    void check_window_update();
+
+
+    // getter
+    bool windows_size_changed = false;
+
+    int get_terminal_pos_cursor();
+    int get_buffer_index_display_begin();
+    int get_buffer_index_display_end();
+    int get_terminal_pos_line_end();
+
+    //void update_line_end_pos();
+
+    T_position get_cursor_position();
+
+
+    // input
+    void clear_below();
+    std::string readline();
+};
+
+}
\ No newline at end of file