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Fix issue #1924 by making prev_cell persistent across line_as_ansi calls

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This commit is contained in:
s1341 2019-08-25 16:25:36 +03:00
parent a0ceba407e
commit 297963f6ab
4 changed files with 20 additions and 13 deletions
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6
kitty/history.c
View File

@ -179,6 +179,7 @@ pagerhist_push(HistoryBuf *self) {
PagerHistoryBuf *ph = self->pagerhist;
if (!ph) return;
bool truncated;
GPUCell *prev_cell = NULL;
Line l = {.xnum=self->xnum};
init_line(self, self->start_of_data, &l);
#define EXPAND_IF_FULL(sz) { \
@ -193,7 +194,7 @@ pagerhist_push(HistoryBuf *self) {
ph->buffer[ph->end++] = '\n';
}
while(sz < ph->maxsz - 2) {
size_t num = line_as_ansi(&l, ph->buffer + ph->end, ph->bufsize - ph->end - 2, &truncated);
size_t num = line_as_ansi(&l, ph->buffer + ph->end, ph->bufsize - ph->end - 2, &truncated, &prev_cell);
if (!truncated) {
ph->end += num;
ph->buffer[ph->end++] = '\r';
@ -270,12 +271,13 @@ as_ansi(HistoryBuf *self, PyObject *callback) {
static Py_UCS4 t[5120];
Line l = {.xnum=self->xnum};
bool truncated;
GPUCell *prev_cell = NULL;
for(unsigned int i = 0; i < self->count; i++) {
init_line(self, i, &l);
if (i < self->count - 1) {
l.continued = *attrptr(self, index_of(self, i + 1)) & CONTINUED_MASK;
} else l.continued = false;
index_type num = line_as_ansi(&l, t, 5120, &truncated);
index_type num = line_as_ansi(&l, t, 5120, &truncated, &prev_cell);
if (!(l.continued) && num < 5119) t[num++] = 10; // 10 = \n
PyObject *ans = PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND, t, num);
if (ans == NULL) return PyErr_NoMemory();

5
kitty/line-buf.c
View File

@ -398,16 +398,17 @@ as_ansi(LineBuf *self, PyObject *callback) {
// remove trailing empty lines
index_type ylimit = self->ynum - 1;
bool truncated;
GPUCell *prev_cell = NULL;
do {
init_line(self, (&l), self->line_map[ylimit]);
if (line_as_ansi(&l, t, 5120, &truncated) != 0) break;
if (line_as_ansi(&l, t, 5120, &truncated, &prev_cell) != 0) break;
ylimit--;
} while(ylimit > 0);
for(index_type i = 0; i <= ylimit; i++) {
l.continued = ((i < self->ynum - 1) ? self->line_attrs[i+1] : self->line_attrs[i]) & CONTINUED_MASK;
init_line(self, (&l), self->line_map[i]);
index_type num = line_as_ansi(&l, t, 5120, &truncated);
index_type num = line_as_ansi(&l, t, 5120, &truncated, &prev_cell);
if (!(l.continued) && num < 5119) t[num++] = 10; // 10 = \n
PyObject *ans = PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND, t, num);
if (ans == NULL) return PyErr_NoMemory();

17
kitty/line.c
View File

@ -258,7 +258,7 @@ write_sgr(const char *val, Py_UCS4 *buf, index_type buflen, index_type *i) {
}
index_type
line_as_ansi(Line *self, Py_UCS4 *buf, index_type buflen, bool *truncated) {
line_as_ansi(Line *self, Py_UCS4 *buf, index_type buflen, bool *truncated, GPUCell** prev_cell) {
#define WRITE_SGR(val) { if (!write_sgr(val, buf, buflen, &i)) { *truncated = true; return i; } }
#define WRITE_CH(val) if (i > buflen - 1) { *truncated = true; return i; } buf[i++] = val;
@ -268,7 +268,10 @@ line_as_ansi(Line *self, Py_UCS4 *buf, index_type buflen, bool *truncated) {
char_type previous_width = 0;
GPUCell blank_cell = { 0 };
GPUCell *cell, *prev_cell = &blank_cell;
GPUCell *cell;
if (prev_cell == NULL || *prev_cell == NULL) {
*prev_cell = &blank_cell;
}
for (index_type pos=0; pos < limit; pos++) {
char_type ch = self->cpu_cells[pos].ch;
@ -279,13 +282,13 @@ line_as_ansi(Line *self, Py_UCS4 *buf, index_type buflen, bool *truncated) {
cell = &self->gpu_cells[pos];
#define CMP_ATTRS (cell->attrs & ATTRS_MASK_WITHOUT_WIDTH) != (prev_cell->attrs & ATTRS_MASK_WITHOUT_WIDTH)
#define CMP(x) cell->x != prev_cell->x
#define CMP_ATTRS (cell->attrs & ATTRS_MASK_WITHOUT_WIDTH) != ((*prev_cell)->attrs & ATTRS_MASK_WITHOUT_WIDTH)
#define CMP(x) cell->x != (*prev_cell)->x
if (CMP_ATTRS || CMP(fg) || CMP(bg) || CMP(decoration_fg)) {
const char *sgr = cell_as_sgr(cell, prev_cell);
const char *sgr = cell_as_sgr(cell, *prev_cell);
if (*sgr) WRITE_SGR(sgr);
}
prev_cell = cell;
*prev_cell = cell;
WRITE_CH(ch);
for(unsigned c = 0; c < arraysz(self->cpu_cells[pos].cc_idx) && self->cpu_cells[pos].cc_idx[c]; c++) {
WRITE_CH(codepoint_for_mark(self->cpu_cells[pos].cc_idx[c]));
@ -304,7 +307,7 @@ as_ansi(Line* self, PyObject *a UNUSED) {
#define as_ansi_doc "Return the line's contents with ANSI (SGR) escape codes for formatting"
static Py_UCS4 t[5120] = {0};
bool truncated;
index_type num = line_as_ansi(self, t, 5120, &truncated);
index_type num = line_as_ansi(self, t, 5120, &truncated, NULL);
PyObject *ans = PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND, t, num);
return ans;
}

5
kitty/lineops.h
View File

@ -61,7 +61,7 @@ void line_right_shift(Line *, unsigned int , unsigned int );
void line_add_combining_char(Line *, uint32_t , unsigned int );
index_type line_url_start_at(Line *self, index_type x);
index_type line_url_end_at(Line *self, index_type x, bool, char_type);
index_type line_as_ansi(Line *self, Py_UCS4 *buf, index_type buflen, bool*);
index_type line_as_ansi(Line *self, Py_UCS4 *buf, index_type buflen, bool*, GPUCell**);
unsigned int line_length(Line *self);
size_t cell_as_unicode(CPUCell *cell, bool include_cc, Py_UCS4 *buf, char_type);
size_t cell_as_unicode_for_fallback(CPUCell *cell, Py_UCS4 *buf);
@ -100,6 +100,7 @@ void historybuf_clear(HistoryBuf *self);
Py_UCS4 *buf = NULL; \
PyObject *nl = PyUnicode_FromString("\n"); \
PyObject *cr = PyUnicode_FromString("\r"); \
GPUCell *prev_cell = NULL; \
if (nl == NULL || cr == NULL) goto end; \
if (as_ansi) { \
buf = malloc(sizeof(Py_UCS4) * columns * 100); \
@ -114,7 +115,7 @@ void historybuf_clear(HistoryBuf *self);
} \
if (as_ansi) { \
bool truncated; \
index_type num = line_as_ansi(line, buf, columns * 100 - 2, &truncated); \
index_type num = line_as_ansi(line, buf, columns * 100 - 2, &truncated, &prev_cell); \
t = PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND, buf, num); \
} else { \
t = line_as_unicode(line); \