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Get rid of utoi()

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Kovid Goyal
2023-11-17 12:54:06 +05:30
parent 45e10394a0
commit 293ad34535
3 changed files with 36 additions and 54 deletions
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72
kitty/vt-parser.c
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@@ -127,31 +127,25 @@ _report_draw(PyObject *dump_callback, id_type window_id, const uint32_t *chars,
// }}}
// Utils {{{
static const uint64_t pow_10_array[] = {
1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 10000000000
static const int64_t digit_multipliers[] = {
10000000000000000l,
1000000000000000l,
100000000000000l,
10000000000000l,
1000000000000l,
100000000000l,
10000000000l,
1000000000l,
100000000l,
10000000l,
1000000l,
100000l,
10000l,
1000l,
100l,
1l
};
static int64_t
utoi(const uint8_t *buf, const unsigned int sz) {
int64_t ans = 0;
int mult = 1;
if (LIKELY(sz > 0)) {
ByteLoader b;
byte_loader_init(&b, buf, sz);
uint8_t digit = byte_loader_peek(&b);
if (digit == '-') { mult = -1; byte_loader_next(&b); }
while (b.num_left) { // ignore leading zeros
digit = byte_loader_peek(&b);
if (digit != '0') break;
byte_loader_next(&b);
}
while (b.num_left) {
digit = byte_loader_next(&b);
ans += (digit - '0') * *(pow_10_array + b.num_left);
}
}
return ans * mult;
}
// }}}
// Data structures {{{
@@ -493,13 +487,16 @@ dispatch_osc(PS *self, uint8_t *buf, size_t limit, bool is_extended_osc) {
#define END_DISPATCH_WITHOUT_BREAK }; PyErr_Clear(); }
#define END_DISPATCH }; PyErr_Clear(); break; }
int64_t accumulator = 0;
int code=0;
unsigned int i;
for (i = 0; i < MIN(limit, 5u); i++) {
if (buf[i] < '0' || buf[i] > '9') break;
int64_t num = buf[i] - '0';
if (num < 0 || num > 9) break;
accumulator += num * digit_multipliers[i];
}
if (i > 0) {
code = utoi(buf, i);
code = accumulator / digit_multipliers[i - 1];
if (i < limit && buf[i] == ';') i++;
}
@@ -748,25 +745,6 @@ csi_letter(unsigned code) {
return buf;
}
static const int64_t csi_multipliers[] = {
10000000000000000l,
1000000000000000l,
100000000000000l,
10000000000000l,
1000000000000l,
100000000000l,
10000000000l,
1000000000l,
100000000l,
10000000l,
1000000l,
100000l,
10000l,
1000l,
100l,
1l
};
static bool
commit_csi_param(PS *self UNUSED, ParsedCSI *csi) {
if (!csi->num_digits) return true;
@@ -774,15 +752,15 @@ commit_csi_param(PS *self UNUSED, ParsedCSI *csi) {
REPORT_ERROR("CSI escape code has too many parameters, ignoring it");
return false;
}
csi->params[csi->num_params++] = csi->mult * (csi->accumulator / csi_multipliers[csi->num_digits - 1]);
csi->params[csi->num_params++] = csi->mult * (csi->accumulator / digit_multipliers[csi->num_digits - 1]);
csi->num_digits = 0; csi->mult = 1; csi->accumulator = 0;
return true;
}
static void
csi_add_digit(ParsedCSI *csi, uint8_t ch) {
if (UNLIKELY(csi->num_digits >= arraysz(csi_multipliers))) return;
csi->accumulator += (ch - '0') * csi_multipliers[csi->num_digits++];
if (UNLIKELY(csi->num_digits >= arraysz(digit_multipliers))) return;
csi->accumulator += (ch - '0') * digit_multipliers[csi->num_digits++];
}
static bool