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-rw-r--r--toys/pending/vi.c141
1 files changed, 86 insertions, 55 deletions
diff --git a/toys/pending/vi.c b/toys/pending/vi.c
index 50b8f0ab..9334e033 100644
--- a/toys/pending/vi.c
+++ b/toys/pending/vi.c
@@ -22,6 +22,9 @@ config VI
GLOBALS(
int cur_col;
int cur_row;
+ int scr_row;
+ int drawn_row;
+ int drawn_col;
unsigned screen_height;
unsigned screen_width;
int vi_mode;
@@ -91,6 +94,8 @@ struct yank_buf yank; //single yank
// 0x1 = Command needs argument (f,F,r...)
// 0x2 = Move 1 right on yank/delete/insert (e, $...)
// 0x4 = yank/delete last line fully
+// 0x10000000 = redraw after cursor needed
+// 0x20000000 = full redraw needed
// 0x40000000 = count0 not given
// 0x80000000 = move was reverse
@@ -211,7 +216,6 @@ int vi_dd(char reg, int count0, int count1)
vi_delete(reg, pos, 0, 0);
check_cursor_bounds();
- adjust_screen_buffer();
return 1;
}
@@ -287,7 +291,6 @@ next_line:
return vi_movw(count, 1, 0);
check_cursor_bounds();
- adjust_screen_buffer();
return 1;
}
@@ -319,7 +322,6 @@ exit_function:
return vi_movb(count, 1, 0);
TT.vi_mov_flag |= 0x80000000;
check_cursor_bounds();
- adjust_screen_buffer();
return 1;
}
@@ -338,7 +340,6 @@ static int vi_move(int count0, int count1, char *unused)
TT.vi_mov_flag |= 2;
check_cursor_bounds();
- adjust_screen_buffer();
return 1;
}
@@ -388,7 +389,6 @@ void i_split()
c_r->line = l;
TT.cur_col = 0;
check_cursor_bounds();
- adjust_screen_buffer();
}
@@ -415,10 +415,12 @@ static int vi_eol(int count0, int count1, char *unused)
//TODO check register where to push from
static int vi_push(char reg, int count0, int count1)
{
- char *start = yank.data;
- char *end = yank.data+strlen(yank.data);
+ char *start = yank.data, *end = yank.data+strlen(yank.data);
+ struct linelist *cursor = c_r;
+ int col = TT.cur_col;
//insert into new lines
if (*(end-1) == '\n') for (;start != end;) {
+ TT.vi_mov_flag |= 0x10000000;
char *next = strchr(start, '\n');
vi_eol(1, 1, 0);
i_split();
@@ -432,6 +434,7 @@ static int vi_push(char reg, int count0, int count1)
else for (;start != end;) {
char *next = strchr(start, '\n');
if (next) {
+ TT.vi_mov_flag |= 0x10000000;
i_insert(start, next-start);
i_split();
start = next+1;
@@ -440,6 +443,10 @@ static int vi_push(char reg, int count0, int count1)
start = end;
}
}
+ //if row changes during push original cursor position is kept
+ //vi inconsistancy
+ if (c_r != cursor) c_r = cursor, TT.cur_col = col;
+
return 1;
}
@@ -475,7 +482,6 @@ static int vi_go(int count0, int count1, char *symbol)
TT.cur_col = 0;
check_cursor_bounds(); //adjusts cursor column
- adjust_screen_buffer(); //adjusts screen buffer
if (prev_row>TT.cur_row) TT.vi_mov_flag |= 0x80000000;
return 1;
@@ -505,6 +511,7 @@ static int vi_delete(char reg, struct linelist *row, int col, int flags)
start = start->down;
full_line_delete:
+ TT.vi_mov_flag |= 0x10000000;
for (;start != end;) {
struct linelist* lst = start;
//struct linelist *lst = dlist_pop(&start);
@@ -518,6 +525,7 @@ full_line_delete:
free(lst);
}
last_line_delete:
+ TT.vi_mov_flag |= 0x10000000;
if (TT.vi_mov_flag&2) col_e = start->line->str_len;
if (TT.vi_mov_flag&4) {
if (!end->down && !end->up)
@@ -813,7 +821,6 @@ static int search_str(char *s)
c_r = lst;
TT.cur_col = c-c_r->line->str_data;
check_cursor_bounds();
- adjust_screen_buffer();
return 0;
}
@@ -882,6 +889,7 @@ void vi_main(void)
tty_esc("?1049h");
tty_esc("H");
xflush(1);
+ TT.vi_mov_flag = 0x20000000;
draw_page();
while(1) {
int key = scan_key(keybuf, -1);
@@ -1080,7 +1088,7 @@ int crunch_nstr(char **str, int width, int n, FILE *out, char *escmore,
static void draw_page()
{
- struct linelist *scr_buf = scr_r;
+ struct linelist *scr_buf = 0;
unsigned y = 0;
int x = 0;
@@ -1093,26 +1101,26 @@ static void draw_page()
//variables used only for cursor handling
int aw = 0, iw = 0, clip = 0, margin = 8;
- //clear screen
- tty_esc("2J");
- tty_esc("H");
+ int scroll = 0, redraw = 0;
- //draw lines until cursor row
+ adjust_screen_buffer();
+ scr_buf = scr_r;
+ redraw = (TT.vi_mov_flag & 0x30000000)>>28;
+
+ scroll = TT.drawn_row-TT.scr_row;
+ if (TT.drawn_row<0 || TT.cur_row<0 || TT.scr_row<0) redraw = 3;
+ else if (abs(scroll)>TT.screen_height/2) redraw = 3;
+
+ tty_jump(0, 0);
+ if (redraw&2) tty_esc("2J"), tty_esc("H"); //clear screen
+ else if (scroll>0) printf("\033[%dL", scroll); //scroll up
+ else if (scroll<0) printf("\033[%dM", -scroll); //scroll down
+
+ //jump until cursor
for (; y < TT.screen_height; y++ ) {
- tty_jump(0, y);
- if (scr_buf == c_r)
- break;
- if (scr_buf) {
- if (scr_buf->line->str_data && scr_buf->line->str_len) {
- line = scr_buf->line->str_data;
- bytes = scr_buf->line->str_len;
- scr_buf = scr_buf->down;
- crunch_str(&line, TT.screen_width-1, stdout, "\t", vi_crunch);
- if ( *line ) printf("@");
- } else scr_buf = scr_buf->down;
- }
+ if (scr_buf == c_r) break;
+ scr_buf = scr_buf->down;
}
-
//draw cursor row
/////////////////////////////////////////////////////////////
//for long lines line starts to scroll when cursor hits margin
@@ -1120,10 +1128,12 @@ static void draw_page()
bytes = TT.cur_col;
end = line;
+
+ tty_jump(0, y);
+ tty_esc("2K");
//find cursor position
aw = crunch_nstr(&end, 1024, bytes, 0, "\t", vi_crunch);
-
//if we need to render text that is not inserted to buffer yet
if (TT.vi_mode == 2 && il->str_len) {
char* iend = il->str_data; //input end
@@ -1167,26 +1177,52 @@ static void draw_page()
x += crunch_str(&end, TT.screen_width-x, stdout, "\t", vi_crunch);
}
- tty_jump(0, ++y);
if (scr_buf) scr_buf = scr_buf->down;
// drawing cursor row ends
///////////////////////////////////////////////////////////////////
-//draw until end
+ //start drawing all other rows that needs update
+ ///////////////////////////////////////////////////////////////////
+ y = 0, scr_buf = scr_r;
+
+ //if we moved around in long line might need to redraw everything
+ if (clip != TT.drawn_col) redraw = 3;
+
for (; y < TT.screen_height; y++ ) {
+ int draw_line = 0;
+ if (scr_buf == c_r) {
+ scr_buf = scr_buf->down;
+ continue;
+ } else if (redraw) draw_line++;
+ else if (scroll<0 && TT.screen_height-y-1<-scroll)
+ scroll++, draw_line++;
+ else if (scroll>0) scroll--, draw_line++;
+
tty_jump(0, y);
- if (scr_buf) {
- if (scr_buf->line->str_data && scr_buf->line->str_len) {
- line = scr_buf->line->str_data;
- bytes = scr_buf->line->str_len;
- scr_buf = scr_buf->down;
- crunch_str(&line, TT.screen_width-1, stdout, "\t", vi_crunch);
- if ( *line ) printf("@");
- } else scr_buf = scr_buf->down;
- } else printf("~");
+ if (draw_line) {
+
+ tty_esc("2K");
+ if (scr_buf) {
+ if (draw_line && scr_buf->line->str_data && scr_buf->line->str_len) {
+ line = scr_buf->line->str_data;
+ bytes = scr_buf->line->str_len;
+
+ aw = crunch_nstr(&line, clip, bytes, 0, "\t", vi_crunch);
+ crunch_str(&line, TT.screen_width-1, stdout, "\t", vi_crunch);
+ if ( *line ) printf("@");
+
+ }
+ } else if (draw_line) printf("~");
+ }
+ if (scr_buf) scr_buf = scr_buf->down;
}
+ TT.drawn_row = TT.scr_row, TT.drawn_col = clip;
+
+ //finished updating visual area
+
tty_jump(0, TT.screen_height);
+ tty_esc("2K");
switch (TT.vi_mode) {
case 0:
tty_esc("30;44m");
@@ -1214,10 +1250,12 @@ static void draw_page()
tty_jump(TT.screen_width-12, TT.screen_height);
printf("| %d, %d\n", TT.cur_row, TT.cur_col);
+
tty_esc("m");
+ tty_jump(0, TT.screen_height+1);
+ tty_esc("2K");
if (!TT.vi_mode) {
tty_esc("1m");
- tty_jump(0, TT.screen_height+1);
printf("%s", il->str_data);
tty_esc("m");
} else tty_jump(cx_scr, cy_scr);
@@ -1243,28 +1281,23 @@ static void adjust_screen_buffer()
struct linelist *t = text;
int c = -1, s = -1, i = 0;
//searching cursor and screen line numbers
- for (;;) {
- i++;
+ for (;((c == -1) || (s == -1)) && t != 0; i++, t = t->down) {
if (t == c_r) c = i;
if (t == scr_r) s = i;
-
- t = t->down;
- if ( ((c != -1) && (s != -1)) || t == 0)
- break;
}
//adjust screen buffer so cursor is on drawing area
- if (c <= s) scr_r = c_r; //scroll up
- else if (c > s) {
+ if (c <= s) scr_r = c_r, s = c; //scroll up
+ else {
//drawing does not have wrapping so no need to check width
- int distance = c - s + 1;
+ int distance = c-s+1;
- if (distance >= (int)TT.screen_height) {
- int adj = distance - TT.screen_height;
- while (adj--) scr_r = scr_r->down; //scroll down
+ if (distance > (int)TT.screen_height) {
+ int adj = distance-TT.screen_height;
+ for (;adj; adj--) scr_r = scr_r->down, s++; //scroll down
}
}
- TT.cur_row = c;
+ TT.cur_row = c, TT.scr_row = s;
}
@@ -1410,7 +1443,6 @@ static int cur_up(int count0, int count1, char* unused)
TT.vi_mov_flag |= 0x80000000;
check_cursor_bounds();
- adjust_screen_buffer();
return 1;
}
@@ -1421,7 +1453,6 @@ static int cur_down(int count0, int count1, char* unused)
c_r = c_r->down;
check_cursor_bounds();
- adjust_screen_buffer();
return 1;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-03 15:34:30 +0000