vtgl

Commit: 8dfed6621fa3f75adc05275031b3f3c40d7fcab3
Parent: 62abcc3db668320844d3128d653fb5a7bf9c10a2
Author: Randy Palamar
Date:   Sun, 11 Aug 2024 11:20:48 -0600

add some debug functions for dumping raw lines/fb

Diffstat:
A
debug.c
 | 
99
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
M
util.h
 | 
4
++++
M
vtgl.c
 | 
11
+++++++++++

3 files changed, 114 insertions(+), 0 deletions(-)
diff --git a/debug.c b/debug.c
@@ -0,0 +1,99 @@
+#include "util.h"
+
+static Cursor
+simulate_line(Term *t, Line *line)
+{
+	Cursor saved_cursor = t->cursor;
+	s8 l = line_to_s8(line);
+
+	t->cursor.state = line->cursor_state;
+
+	while (l.len) {
+		u32 cp;
+		if (line->has_unicode) cp = get_utf8(&l);
+		else                   cp = get_ascii(&l);
+
+		u32 advance = g_tabstop - (t->cursor.col % g_tabstop);
+
+		switch (cp) {
+		case 0x1B: check_if_escape_moves_cursor(t, &l);                       break;
+		case '\r': t->cursor.col = 0;                                         break;
+		case '\n': cursor_move_to(t, t->cursor.row + 1, t->cursor.col);       break;
+		case '\t': cursor_move_to(t, t->cursor.row, t->cursor.col + advance); break;
+		case '\b': cursor_move_to(t, t->cursor.row, t->cursor.col - 1);       break;
+		default:   cursor_move_to(t, t->cursor.row, t->cursor.col + 1);       break;
+		}
+	}
+
+	Cursor result = t->cursor;
+	t->cursor = saved_cursor;
+
+	return result;
+}
+
+static void
+fput_cursor_info(FILE *f, CellStyle c)
+{
+	fprintf(f, "\tFG:   0x%08x\n", c.fg.rgba);
+	fprintf(f, "\tBG:   0x%08x\n", c.bg.rgba);
+	fprintf(f, "\tAttr: 0x%08x\n", c.attr);
+}
+
+static void
+fput_line_info(FILE *f, Term *t, Line *l)
+{
+	fprintf(f, "Line Info:\n");
+	fprintf(f, "\tLength: %ld\n", line_length(l));
+	fprintf(f, "\tHas Unicode: %d\n", l->has_unicode);
+	fput_cursor_info(f, l->cursor_state);
+	Cursor end = simulate_line(t, l);
+	fprintf(f, "After Line Cursor State:\n");
+	fput_cursor_info(f, end.state);
+}
+
+static void
+dump_last_line_to_file(Term *t)
+{
+	char *fname = "last_line.bin";
+	FILE *f = fopen(fname, "w");
+	if (!f) return;
+
+	printf("dumping line to %s\n", fname);
+
+	fputs("Line Idx -1:\n", f);
+	Line *line = t->log_lines.buf + get_line_idx(&t->log_lines, -1);
+	s8 l = line_to_s8(line);
+	fput_line_info(f, t, line);
+	fwrite(l.data, 1, l.len, f);
+
+	fputs("\nLine Idx 0:\n", f);
+	line = t->log_lines.buf + get_line_idx(&t->log_lines, 0);
+	l    = line_to_s8(line);
+	fput_line_info(f, t, line);
+	fwrite(l.data, 1, l.len, f);
+
+	fclose(f);
+}
+
+static void
+fput_cell(FILE *f, Cell *c)
+{
+	s8 s = utf8_encode(c->cp);
+	fwrite(s.data, 1, s.len, f);
+}
+
+static void
+dump_fb_to_file(Term *t)
+{
+	char *fname = "fb.bin";
+	FILE *f = fopen(fname, "w");
+	if (!f) return;
+	printf("dumping fb to %s\n", fname);
+	for (u32 r = 0; r < t->size.h; r++) {
+		for (u32 c = 0; c < t->size.w; c++)
+			fput_cell(f, &t->fb.rows[r][c]);
+		fputc('\n', f);
+	}
+	fclose(f);
+}
+
diff --git a/util.h b/util.h
@@ -277,4 +277,8 @@ typedef struct {
 #include "font.c"
 #include "terminal.c"
 
+#ifdef _DEBUG
+#include "debug.c"
+#endif
+
 #endif /* _UTIL_H_ */
diff --git a/vtgl.c b/vtgl.c
@@ -299,6 +299,17 @@ key_callback(GLFWwindow *win, i32 key, i32 sc, i32 act, i32 mods)
 {
 	Term *t = glfwGetWindowUserPointer(win);
 
+	#ifdef _DEBUG
+	if (key == GLFW_KEY_F1 && act == GLFW_PRESS) {
+		dump_last_line_to_file(t);
+		return;
+	}
+	if (key == GLFW_KEY_F2 && act == GLFW_PRESS) {
+		dump_fb_to_file(t);
+		return;
+	}
+	#endif
+
 	if (mods & GLFW_MOD_CONTROL && key < 0x80) {
 		if (act == GLFW_RELEASE)
 			return;