Changeset ebb1489 in mainline for uspace/lib/termui/src/history.h

Timestamp:

2024-10-13T08:23:40Z (8 weeks ago)

Author:

GitHub <noreply@…>

Children:

0472cf17

Parents:

2a0c827c (diff), b3b79981 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

git-author:

boba-buba <120932204+boba-buba@…> (2024-10-13 08:23:40)

git-committer:

GitHub <noreply@…> (2024-10-13 08:23:40)

Message:

Merge branch 'HelenOS:master' into topic/packet-capture

File:

• uspace/lib/termui/src/history.h (moved) (moved from uspace/srv/hid/output/proto/vt100.h ) (2 diffs)

uspace/lib/termui/src/history.h

@@ -1 +1 @@
 /*
- * Copyright (c) 2011 Martin Decky
+ * Copyright (c) 2024 Jiří Zárevúcky
  * All rights reserved.
  *
@@ -27 +27 @@
  */
 
-/** @addtogroup output
- * @{
- */
+#include <termui.h>
+#include <stdbool.h>
 
-#ifndef OUTPUT_PROTO_VT100_H_
-#define OUTPUT_PROTO_VT100_H_
+#define INTERNAL __attribute__((visibility("internal")))
 
-#include <io/charfield.h>
+static bool _cell_is_empty(const termui_cell_t cell)
+{
+        return cell.glyph_idx == 0 && cell.bgcolor == 0 && cell.fgcolor == 0 &&
+            cell.padding == 0;
+}
 
-typedef void (*vt100_putuchar_t)(char32_t ch);
-typedef void (*vt100_control_puts_t)(const char *str);
-typedef void (*vt100_flush_t)(void);
+struct cell_buffer {
+        termui_cell_t *buf;
 
-typedef struct {
-        sysarg_t cols;
-        sysarg_t rows;
+        size_t head_offset;
+        size_t head_top;
 
-        sysarg_t cur_col;
-        sysarg_t cur_row;
-        char_attrs_t cur_attrs;
+        /* Tail offset is implicitly zero. */
+        size_t tail_top;
 
-        vt100_putuchar_t putuchar;
-        vt100_control_puts_t control_puts;
-        vt100_flush_t flush;
-} vt100_state_t;
+        size_t buf_len;
+        size_t max_len;
+};
 
-extern vt100_state_t *vt100_state_create(sysarg_t, sysarg_t, vt100_putuchar_t,
-    vt100_control_puts_t, vt100_flush_t);
-extern void vt100_state_destroy(vt100_state_t *);
+struct history_line {
+        size_t idx;
+        size_t len;
+};
 
-extern errno_t vt100_yield(vt100_state_t *);
-extern errno_t vt100_claim(vt100_state_t *);
-extern void vt100_get_dimensions(vt100_state_t *, sysarg_t *, sysarg_t *);
+struct line_buffer {
+        struct history_line *buf;
 
-extern void vt100_goto(vt100_state_t *, sysarg_t, sysarg_t);
-extern void vt100_set_attr(vt100_state_t *, char_attrs_t);
-extern void vt100_cursor_visibility(vt100_state_t *, bool);
-extern void vt100_putuchar(vt100_state_t *, char32_t);
-extern void vt100_flush(vt100_state_t *);
+        size_t head;
+        size_t tail;
 
-#endif
+        size_t buf_len;
+        size_t max_len;
+};
 
-/** @}
- */
+struct history {
+        size_t viewport_top;
+        size_t row_delta;
+
+        size_t cols;
+
+        struct cell_buffer cells;
+        struct line_buffer lines;
+
+        bool append;
+};
+
+INTERNAL bool _scrollback_active(const struct history *history);
+INTERNAL void _history_append_row(struct history *history, const termui_cell_t *b, bool last);
+INTERNAL int _history_viewport_rows(const struct history *history, size_t max);
+INTERNAL int _history_iter_rows(const struct history *history, int row, int count, termui_update_cb_t cb, void *udata);
+INTERNAL int _history_scroll(struct history *history, int delta);
+INTERNAL const termui_cell_t *_history_reflow(struct history *history, size_t new_cols, size_t *recouped);