swayfx/common/util.c

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#define _POSIX_C_SOURCE 200809L
#include <ctype.h>
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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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bool parse_color(const char *color, uint32_t *result) {
if (color[0] == '#') {
++color;
}
int len = strlen(color);
if ((len != 6 && len != 8) || !isxdigit(color[0]) || !isxdigit(color[1])) {
return false;
}
char *ptr;
uint32_t parsed = strtoul(color, &ptr, 16);
if (*ptr != '\0') {
return false;
}
*result = len == 6 ? ((parsed << 8) | 0xFF) : parsed;
return true;
}
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void color_to_rgba(float dest[static 4], uint32_t color) {
dest[0] = ((color >> 24) & 0xff) / 255.0;
dest[1] = ((color >> 16) & 0xff) / 255.0;
dest[2] = ((color >> 8) & 0xff) / 255.0;
dest[3] = (color & 0xff) / 255.0;
}
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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 sway_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;
}