foot/misc.c
Daniel Eklöf 97ec375c67
toplevel-icon: implement OSC-1, CSI 20/21/22/23 t
* The toplevel icon is now set to the app-id, unless "overridden" by
  OSC-1 or OSC-0.
* Implemented OSC-1
* OSC-0 extended to also set the icon
* Implemented CSI 20 t - report window icon
* Implemented CSI 21 t - report window title
* Implemented CSI 22 ; 1 t - push window icon
* Implemented CS 23 ; 1 t - pop window icon
* Extended CSI 22/23 ; 0 t to also push/pop the icon
* Verify app-id set by OSC-176 is valid UTF-8
* Verify icon set by OSC-0/1 is valid UTF-8
2024-09-13 09:04:17 +02:00

51 lines
1.1 KiB
C

#include "misc.h"
#include "char32.h"
bool
isword(char32_t wc, bool spaces_only, const char32_t *delimiters)
{
if (spaces_only)
return isc32graph(wc);
if (c32chr(delimiters, wc) != NULL)
return false;
return isc32graph(wc);
}
void
timespec_add(const struct timespec *a, const struct timespec *b,
struct timespec *res)
{
const long one_sec_in_ns = 1000000000;
res->tv_sec = a->tv_sec + b->tv_sec;
res->tv_nsec = a->tv_nsec + b->tv_nsec;
/* tv_nsec may be negative */
if (res->tv_nsec >= one_sec_in_ns) {
res->tv_sec++;
res->tv_nsec -= one_sec_in_ns;
}
}
void
timespec_sub(const struct timespec *a, const struct timespec *b,
struct timespec *res)
{
const long one_sec_in_ns = 1000000000;
res->tv_sec = a->tv_sec - b->tv_sec;
res->tv_nsec = a->tv_nsec - b->tv_nsec;
/* tv_nsec may be negative */
if (res->tv_nsec < 0) {
res->tv_sec--;
res->tv_nsec += one_sec_in_ns;
}
}
bool
is_valid_utf8(const char *value)
{
return value != NULL &&
mbsntoc32(NULL, value, strlen(value), 0) != (size_t)-1;
}