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Allow logging code to log arbitrary length messages

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Kovid Goyal
2023-11-09 09:32:22 +05:30
parent 75872a1097
commit 91c3492455
1 changed files with 12 additions and 9 deletions
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21
kitty/logging.c
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@@ -20,21 +20,24 @@ static bool use_os_log = false;
void
log_error(const char *fmt, ...) {
#define bufprint(fmt, ...) { \
if ((size_t)(p - logbuf) < sizeof(logbuf) - 2) { \
p += vsnprintf(p, sizeof(logbuf) - (p - logbuf), fmt, __VA_ARGS__); \
} }
char logbuf[16 * 1024];
char *p = logbuf;
int n = 0;
va_list ar;
va_start(ar, fmt);
bufprint(fmt, ar);
n = vsnprintf(NULL, 0, fmt, ar);
va_end(ar);
RAII_ALLOC(char, sanbuf, calloc(1, 3*(p - logbuf) + 1));
if (n < 0) return;
size_t size = 5 * (size_t)n + 8;
RAII_ALLOC(char, arena, calloc(size, sizeof(char)));
if (!arena) return;
va_start(ar, fmt);
n = vsnprintf(arena, size, fmt, ar);
va_end(ar);
char *sanbuf = arena + n + 1;
char utf8buf[4];
START_ALLOW_CASE_RANGE
size_t j = 0;
for (char *x = logbuf; x < p; x++) {
for (char *x = arena; x < arena + n; x++) {
switch(*x) {
case C0_EXCEPT_NL_SPACE_TAB: {
const uint32_t ch = 0x2400 + *x;