sway/common/util.c

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#define _POSIX_C_SOURCE 200809L
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#include <float.h>
#include <fcntl.h>
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#include <math.h>
#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
#include <wayland-server-protocol.h>
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#include "log.h"
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#include "util.h"
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int wrap(int i, int max) {
return ((i % max) + max) % max;
}
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uint32_t parse_color(const char *color) {
if (color[0] == '#') {
++color;
}
int len = strlen(color);
if (len != 6 && len != 8) {
sway_log(SWAY_DEBUG, "Invalid color %s, defaulting to color 0xFFFFFFFF", color);
return 0xFFFFFFFF;
}
uint32_t res = (uint32_t)strtoul(color, NULL, 16);
if (strlen(color) == 6) {
res = (res << 8) | 0xFF;
}
return res;
}
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bool parse_boolean(const char *boolean, bool current) {
if (strcasecmp(boolean, "1") == 0
|| strcasecmp(boolean, "yes") == 0
|| strcasecmp(boolean, "on") == 0
|| strcasecmp(boolean, "true") == 0
|| strcasecmp(boolean, "enable") == 0
|| strcasecmp(boolean, "enabled") == 0
|| strcasecmp(boolean, "active") == 0) {
return true;
} else if (strcasecmp(boolean, "toggle") == 0) {
return !current;
}
// All other values are false to match i3
return false;
}
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float parse_float(const char *value) {
errno = 0;
char *end;
float flt = strtof(value, &end);
if (*end || errno) {
sway_log(SWAY_DEBUG, "Invalid float value '%s', defaulting to NAN", value);
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return NAN;
}
return flt;
}
const char *sway_wl_output_subpixel_to_string(enum wl_output_subpixel subpixel) {
switch (subpixel) {
case WL_OUTPUT_SUBPIXEL_UNKNOWN:
return "unknown";
case WL_OUTPUT_SUBPIXEL_NONE:
return "none";
case WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB:
return "rgb";
case WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR:
return "bgr";
case WL_OUTPUT_SUBPIXEL_VERTICAL_RGB:
return "vrgb";
case WL_OUTPUT_SUBPIXEL_VERTICAL_BGR:
return "vbgr";
}
sway_assert(false, "Unknown value for wl_output_subpixel.");
return NULL;
}
bool set_cloexec(int fd, bool cloexec) {
int flags = fcntl(fd, F_GETFD);
if (flags == -1) {
sway_log_errno(SWAY_ERROR, "fcntl failed");
return false;
}
if (cloexec) {
flags = flags | FD_CLOEXEC;
} else {
flags = flags & ~FD_CLOEXEC;
}
if (fcntl(fd, F_SETFD, flags) == -1) {
sway_log_errno(SWAY_ERROR, "fcntl failed");
return false;
}
return true;
}