1 files changed, 117 insertions, 0 deletions
diff --git a/src/editor/editbuffer.h b/src/editor/editbuffer.h
new file mode 100644
index 0000000..def17ee
--- /dev/null
+++ b/src/editor/editbuffer.h
@@ -0,0 +1,117 @@
+/** \file
+ *  \brief Header: text keep buffer for WEdit
+ */
+
+#ifndef MC__EDIT_BUFFER_H
+#define MC__EDIT_BUFFER_H
+
+/*** typedefs(not structures) and defined constants **********************************************/
+
+/*** enums ***************************************************************************************/
+
+/*** structures declarations (and typedefs of structures)*****************************************/
+
+typedef struct edit_buffer_struct
+{
+    off_t curs1;                /* position of the cursor from the beginning of the file. */
+    off_t curs2;                /* position from the end of the file */
+    GPtrArray *b1;              /* all data up to curs1 */
+    GPtrArray *b2;              /* all data from end of file down to curs2 */
+    off_t size;                 /* file size */
+    long lines;                 /* total lines in the file */
+    long curs_line;             /* line number of the cursor. */
+} edit_buffer_t;
+
+typedef struct edit_buffer_read_file_status_msg_struct
+{
+    simple_status_msg_t status_msg;     /* base class */
+
+    gboolean first;
+    edit_buffer_t *buf;
+    off_t loaded;
+} edit_buffer_read_file_status_msg_t;
+
+/*** global variables defined in .c file *********************************************************/
+
+/*** declarations of public functions ************************************************************/
+
+void edit_buffer_init (edit_buffer_t * buf, off_t size);
+void edit_buffer_clean (edit_buffer_t * buf);
+
+int edit_buffer_get_byte (const edit_buffer_t * buf, off_t byte_index);
+#ifdef HAVE_CHARSET
+int edit_buffer_get_utf (const edit_buffer_t * buf, off_t byte_index, int *char_length);
+int edit_buffer_get_prev_utf (const edit_buffer_t * buf, off_t byte_index, int *char_length);
+#endif
+long edit_buffer_count_lines (const edit_buffer_t * buf, off_t first, off_t last);
+off_t edit_buffer_get_bol (const edit_buffer_t * buf, off_t current);
+off_t edit_buffer_get_eol (const edit_buffer_t * buf, off_t current);
+GString *edit_buffer_get_word_from_pos (const edit_buffer_t * buf, off_t start_pos, off_t * start,
+                                        gsize * cut);
+gboolean edit_buffer_find_word_start (const edit_buffer_t * buf, off_t * word_start,
+                                      gsize * word_len);
+
+void edit_buffer_insert (edit_buffer_t * buf, int c);
+void edit_buffer_insert_ahead (edit_buffer_t * buf, int c);
+int edit_buffer_delete (edit_buffer_t * buf);
+int edit_buffer_backspace (edit_buffer_t * buf);
+
+off_t edit_buffer_get_forward_offset (const edit_buffer_t * buf, off_t current, long lines,
+                                      off_t upto);
+off_t edit_buffer_get_backward_offset (const edit_buffer_t * buf, off_t current, long lines);
+
+off_t edit_buffer_read_file (edit_buffer_t * buf, int fd, off_t size,
+                             edit_buffer_read_file_status_msg_t * sm, gboolean * aborted);
+off_t edit_buffer_write_file (edit_buffer_t * buf, int fd);
+
+int edit_buffer_calc_percent (const edit_buffer_t * buf, off_t offset);
+
+/*** inline functions ****************************************************************************/
+
+static inline int
+edit_buffer_get_current_byte (const edit_buffer_t * buf)
+{
+    return edit_buffer_get_byte (buf, buf->curs1);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static inline int
+edit_buffer_get_previous_byte (const edit_buffer_t * buf)
+{
+    return edit_buffer_get_byte (buf, buf->curs1 - 1);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/**
+ * Get "begin-of-line" offset of current line
+ *
+ * @param buf editor buffer
+ *
+ * @return index of first char of current line
+ */
+
+static inline off_t
+edit_buffer_get_current_bol (const edit_buffer_t * buf)
+{
+    return edit_buffer_get_bol (buf, buf->curs1);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/**
+ * Get "end-of-line" offset of current line
+ *
+ * @param buf editor buffer
+ *
+ * @return index of first char of current line + 1
+ */
+
+static inline off_t
+edit_buffer_get_current_eol (const edit_buffer_t * buf)
+{
+    return edit_buffer_get_eol (buf, buf->curs1);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+#endif /* MC__EDIT_BUFFER_H */