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Add -C and -J to capture pane to escape control sequences and to join

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wrapped line, based on a diff from George Nachman.
This commit is contained in:
Nicholas Marriott
2013-03-22 15:56:11 +00:00
parent c519f9a84c
commit 295d86911e
3 changed files with 250 additions and 20 deletions
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228
grid.c
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@ -74,6 +74,10 @@ void grid_reflow_join(struct grid *, u_int *, struct grid_line *, u_int);
void grid_reflow_split(struct grid *, u_int *, struct grid_line *, u_int,
u_int);
void grid_reflow_move(struct grid *, u_int *, struct grid_line *);
size_t grid_string_cells_fg(const struct grid_cell *, int *);
size_t grid_string_cells_bg(const struct grid_cell *, int *);
void grid_string_cells_code(const struct grid_cell *,
const struct grid_cell *, char *, size_t, int);
/* Create a new grid. */
struct grid *
@ -230,6 +234,15 @@ grid_expand_line(struct grid *gd, u_int py, u_int sx)
gl->cellsize = sx;
}
/* Peek at grid line. */
const struct grid_line *
grid_peek_line(struct grid *gd, u_int py)
{
if (grid_check_y(gd, py) != 0)
return (NULL);
return (&gd->linedata[py]);
}
/* Get cell for reading. */
const struct grid_cell *
grid_peek_cell(struct grid *gd, u_int px, u_int py)
@ -392,18 +405,201 @@ grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx)
}
}
/* Get ANSI foreground sequence. */
size_t
grid_string_cells_fg(const struct grid_cell *gc, int *values)
{
size_t n;
n = 0;
if (gc->flags & GRID_FLAG_FG256) {
values[n++] = 38;
values[n++] = 5;
values[n++] = gc->fg;
} else {
switch (gc->fg) {
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
values[n++] = gc->fg + 30;
break;
case 8:
values[n++] = 39;
break;
case 90:
case 91:
case 92:
case 93:
case 94:
case 95:
case 96:
case 97:
values[n++] = gc->fg;
break;
}
}
return (n);
}
/* Get ANSI background sequence. */
size_t
grid_string_cells_bg(const struct grid_cell *gc, int *values)
{
size_t n;
n = 0;
if (gc->flags & GRID_FLAG_BG256) {
values[n++] = 48;
values[n++] = 5;
values[n++] = gc->bg;
} else {
switch (gc->bg) {
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
values[n++] = gc->bg + 40;
break;
case 8:
values[n++] = 49;
break;
case 100:
case 101:
case 102:
case 103:
case 104:
case 105:
case 106:
case 107:
values[n++] = gc->bg - 10;
break;
}
}
return (n);
}
/*
* Returns ANSI code to set particular attributes (colour, bold and so on)
* given a current state. The output buffer must be able to hold at least 57
* bytes.
*/
void
grid_string_cells_code(const struct grid_cell *lastgc,
const struct grid_cell *gc, char *buf, size_t len, int escape_c0)
{
int oldc[16], newc[16], s[32];
size_t noldc, nnewc, n, i;
u_int attr = gc->attr;
u_int lastattr = lastgc->attr;
char tmp[64];
struct {
u_int mask;
u_int code;
} attrs[] = {
{ GRID_ATTR_BRIGHT, 1 },
{ GRID_ATTR_DIM, 2 },
{ GRID_ATTR_ITALICS, 3 },
{ GRID_ATTR_UNDERSCORE, 4 },
{ GRID_ATTR_BLINK, 5 },
{ GRID_ATTR_REVERSE, 7 },
{ GRID_ATTR_HIDDEN, 8 }
};
n = 0;
/* If any attribute is removed, begin with 0. */
for (i = 0; i < nitems(attrs); i++) {
if (!(attr & attrs[i].mask) && (lastattr & attrs[i].mask)) {
s[n++] = 0;
lastattr &= GRID_ATTR_CHARSET;
break;
}
}
/* For each attribute that is newly set, add its code. */
for (i = 0; i < nitems(attrs); i++) {
if ((attr & attrs[i].mask) && !(lastattr & attrs[i].mask))
s[n++] = attrs[i].code;
}
/* If the foreground c changed, append its parameters. */
nnewc = grid_string_cells_fg(gc, newc);
noldc = grid_string_cells_fg(lastgc, oldc);
if (nnewc != noldc ||
memcmp(newc,oldc, nnewc * sizeof newc[0]) != 0) {
for (i = 0; i < nnewc; i++)
s[n++] = newc[i];
}
/* If the background c changed, append its parameters. */
nnewc = grid_string_cells_bg(gc, newc);
noldc = grid_string_cells_bg(lastgc, oldc);
if (nnewc != noldc ||
memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0) {
for (i = 0; i < nnewc; i++)
s[n++] = newc[i];
}
/* If there are any parameters, append an SGR code. */
*buf = '\0';
if (n > 0) {
if (escape_c0)
strlcat(buf, "\\033[", len);
else
strlcat(buf, "\033[", len);
for (i = 0; i < n; i++) {
if (i + 1 < n)
xsnprintf(tmp, sizeof tmp, "%d;", s[i]);
else
xsnprintf(tmp, sizeof tmp, "%d", s[i]);
strlcat(buf, tmp, len);
}
strlcat(buf, "m", len);
}
/* Append shift in/shift out if needed. */
if ((attr & GRID_ATTR_CHARSET) && !(lastattr & GRID_ATTR_CHARSET)) {
if (escape_c0)
strlcat(buf, "\\016", len); /* SO */
else
strlcat(buf, "\016", len); /* SO */
}
if (!(attr & GRID_ATTR_CHARSET) && (lastattr & GRID_ATTR_CHARSET)) {
if (escape_c0)
strlcat(buf, "\\017", len); /* SI */
else
strlcat(buf, "\017", len); /* SI */
}
}
/* Convert cells into a string. */
char *
grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx,
struct grid_cell **lastgc, int with_codes, int escape_c0)
{
const struct grid_cell *gc;
static struct grid_cell lastgc1;
struct utf8_data ud;
char *buf;
size_t len, off;
const char* data;
char *buf, code[128];
size_t len, off, size, codelen;
u_int xx;
GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
if (*lastgc == NULL) {
memcpy(&lastgc1, &grid_default_cell, sizeof lastgc1);
*lastgc = &lastgc1;
}
len = 128;
buf = xmalloc(len);
off = 0;
@ -414,18 +610,38 @@ grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
continue;
grid_cell_get(gc, &ud);
while (len < off + ud.size + 1) {
if (with_codes) {
grid_string_cells_code(*lastgc, gc, code, sizeof code,
escape_c0);
codelen = strlen(code);
memcpy(*lastgc, gc, sizeof *gc);
} else
codelen = 0;
data = ud.data;
size = ud.size;
if (escape_c0 && size == 1 && *data == '\\') {
data = "\\";
size = 2;
}
while (len < off + size + codelen + 1) {
buf = xrealloc(buf, 2, len);
len *= 2;
}
memcpy(buf + off, ud.data, ud.size);
off += ud.size;
if (codelen != 0) {
memcpy(buf + off, code, codelen);
off += codelen;
}
memcpy(buf + off, data, size);
off += size;
}
while (off > 0 && buf[off - 1] == ' ')
off--;
buf[off] = '\0';
return (buf);
}