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-rw-r--r--src/state.c352
1 files changed, 0 insertions, 352 deletions
diff --git a/src/state.c b/src/state.c
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--- a/src/state.c
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@@ -1,352 +0,0 @@
-/**
- * Copyright © 2016 Mattias Andrée <maandree@member.fsf.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-#include "state.h"
-#include "macros.h"
-#include <errno.h>
-#include <limits.h>
-#include <stdarg.h>
-
-#include <libred.h>
-#include <libgamma.h>
-
-
-
-/**
- * The name of the process.
- */
-extern char *argv0;
-
-
-
-/**
- * All sites.
- */
-static libgamma_site_state_t *sites = NULL;
-
-/**
- * The number of sites stored in `sites`.
- */
-static size_t sites_n = 0;
-
-/**
- * All partitions.
- */
-static libgamma_partition_state_t *parts = NULL;
-
-/**
- * The number of partitions stored in `parts`.
- */
-static size_t parts_n = 0;
-
-
-
-/**
- * Is it daytime, night, perhaps some kind of twilight?
- *
- * @param elevation The Sun's apparent elevation.
- * @return The time of the day.
- */
-enum darkness
-get_darkness(double elevation)
-{
- if (elevation > LIBRED_SOLAR_ELEVATION_SUNSET_SUNRISE) return DAYTIME;
- if (elevation > LIBRED_SOLAR_ELEVATION_CIVIL_DUSK_DAWN) return CIVIL_TWILIGHT;
- if (elevation > LIBRED_SOLAR_ELEVATION_NAUTICAL_DUSK_DAWN) return NAUTICAL_TWILIGHT;
- if (elevation > LIBRED_SOLAR_ELEVATION_ASTRONOMICAL_DUSK_DAWN) return ASTRONOMICAL_TWILIGHT;
- return NIGHT;
-}
-
-
-/**
- * Remove the screen number for a display server instance identifier.
- *
- * @param s Display server instance identifier.
- * @return Set the value to which this pointer points to '.'. Do nothing if it is `NULL`.
- */
-static char *
-strip_screen(char *s)
-{
-#define S(V, CD) ((V = ((CD)[1] == 'r' ? strrchr : strchr)(V, (CD)[0])))
- char *p = strchr(s, '=');
- if ((p++) && (*p != '/') && S(p, ":r") && S(p, ".l")) *p = '\0'; else p = NULL;
- return p;
-#undef S
-}
-
-
-/**
- * `stpmulcpy(o, a, b, c, NULL)` is equivalent to
- * `stpcpy(stpcpy(stpcpy(o, a), b), c)`
- */
-#ifdef __GNUC__
-__attribute__((__sentinel__))
-#endif
-static char *
-stpmulcpy(char *out, ... /*, NULL */)
-{
- va_list args;
- char *p = out;
- const char *s;
- va_start(args, out);
- while ((s = va_arg(args, const char *))) p = stpcpy(p, s);
- va_end(args);
- return p;
-}
-
-
-/**
- * Compare two display server environment strings.
- *
- * @param a_ One of the string.
- * @param b_ The other string.
- * @return -1, 0, or +1.
- */
-static int
-displayenvcmp(const void *a_, const void *b_)
-{
-#ifdef __GNUC__
-# pragma GCC diagnostic push
-# pragma GCC diagnostic ignored "-Wdiscarded-qualifiers"
-#endif
- char *a = a_;
- char *b = b_;
-#ifdef __GNUC__
-# pragma GCC diagnostic pop
-#endif
- char *p = strip_screen(a);
- char *q = strip_screen(b);
- int rc;
-
- rc = strcmp(a, b);
- if (p) *p = '.';
- if (q) *q = '.';
- return rc;
-}
-
-
-/**
- * Make an display string safe for a pathname.
- *
- * @param str The string.
- * @return A safe version of the string, `NULL` on error.
- */
-static char *
-escape_display(const char* str)
-{
- char *r, *w, *rc = NULL;
- int s = 0;
- xmalloc(&rc, 2 * strlen(str) + 1); strcpy(rc, str);
- for (r = w = strchr(rc, '=') + 1; *r; r++) {
- if (!s || (*r != '/')) {
- if (strchr("@=/", *r)) *w++ = '@';
- *w++ = ((s = (*r == '/')) ? 's' : *r);
- }
- }
- w[s ? -2 : 0] = '\0';
-fail:
- return rc;
-}
-
-
-/**
- * The string of display servers.
- *
- * @param settings The settings.
- * @return The string, `NULL` on error.
- */
-static char *
-get_display_string(const struct settings *settings)
-{
-#define DISPLAY(VAR, D) p = strip_screen(D); try (VAR = escape_display(D)); if (p) *p = '.', p = NULL
-
- const char *var, *val;
- char *r, *p = NULL, *d = NULL, *rc = NULL, **displays;
- size_t i, n = 0, len = 0;
- int method;
-
- xmalloc(&displays, settings->monitors_n);
- for (i = 0; i < settings->monitors_n; i++)
- if ((settings->monitors_arg[i] == 'd') && strchr(settings->monitors_id[i], '='))
- len += 1 + strlen(displays[n++] = settings->monitors_id[i]);
- if (n) goto custom;
- free(displays), displays = NULL;
-
- if (!libgamma_list_methods(&method, 1, 0)) {
- fprintf(stderr, "No display was found.\n"
- "DRM support missing.\n"
- "Can you even see?\n");
- return errno = 0, NULL;
- }
-
- var = libgamma_method_default_site_variable(method);
- val = libgamma_method_default_site(method);
- if (!val || !*val) return strdup("");
- xmalloc(&d, 3 + strlen(var) + strlen(val));
- stpmulcpy(d, ".", var, "=", val, NULL);
- DISPLAY(rc, d);
- return free(d), rc;
-
-custom:
- qsort(displays, n, sizeof(*displays), displayenvcmp);
- xmalloc(&rc, 2 * len + 1);
- for (r = rc, i = 0; i < n; i++) {
- DISPLAY(d, displays[i]);
- r = stpmulcpy(r, ".", d, NULL), free(d), d = NULL;
- }
- free(displays);
- return rc;
-
-fail:
- if (p) *p = '.';
- CLEANUP(free(rc), free(d), free(displays));
- return NULL;
-}
-
-
-/**
- * Set $RADHARC_STATE.
- *
- * @param settings The settings.
- * @return 0 on success, -1 on error.
- */
-int
-get_state_pathname(const struct settings *settings)
-{
- const char *dir = getenv("XGD_RUNTIME_DIR");
- char *display = NULL;
- char *env = NULL;
- int rc = -1;
- try (display = get_display_string(settings));
- if (!dir || !*dir) dir = "/run";
- xmalloc(&env, strlen(dir) + sizeof("/radharc/") + strlen(display));
- stpmulcpy(env, dir, "/radharc/", display, NULL);
- rc = setenv("RADHARC_STATE", env, 1);
-fail:
- CLEANUP(free(env), free(display));
- return rc;
-}
-
-
-/**
- * Parse a value for the -d option, or select preferred adjustment method.
- *
- * @param display The argument for the -d option. `NULL` for the preferred adjustment method.
- * @return The adjustment method. -1 if not found.
- */
-static int
-get_clut_method(const char *display)
-{
-#define HAIKU(TEXT) t ((msg = (TEXT)))
-#define TEST(STR, ID) if (!strcasecmp(display, STR)) return ID
-
- const char *env, *msg;
- int method;
-
- /* Default? */
- if (!display) {
- if (!libgamma_list_methods(&method, 1, 0))
- HAIKU("No display was found.\n"
- "DRM support missing.\n"
- "Can you even see?\n");
- return method;
- }
-
- /* Single-sited? */
- TEST("none", INT_MAX);
- TEST("drm", LIBGAMMA_METHOD_LINUX_DRM);
-
- /* Unrecognised single-sited? */
- if (!strchr(display, '='))
- HAIKU("Specified display\n"
- "cannot be recognised.\n"
- "Try something else.\n");
-
- /* Multi-sited? */
- for (method = 0; method < LIBGAMMA_METHOD_COUNT; method++) {
- env = libgamma_method_default_site_variable(method);
- if (env && (strstr(display, env) == display) && (display[strlen(env)] == '='))
- return method;
- }
-
- /* Unrecognised multi-sited. */
- HAIKU("Specified display\n"
- "cannot be recognised.\n"
- "Try to recompile.\n");
-
-fail:
- fprintf(stderr, "%s", msg);
- return errno = 0, -1;
-}
-
-
-/**
- * Initialise the CLUT support.
- *
- * @param settings The settings.
- * @return 0 on success, -1 on error.
- */
-int
-initialise_clut(const struct settings *settings)
-{
-#define NONE_METHOD (method == INT_MAX)
-
- int method = 0, error = 0;
- const char *sitename_;
- char *sitename = NULL;
- size_t i, j, parts_off = 0;
- libgamma_site_state_t site;
-
- xcalloc(&sites, settings->monitors_n + 1);
-
- for (i = 0; i < settings->monitors_n; i++) {
- switch (settings->monitors_arg[i]) {
- case 'd':
- parts_off = parts_n;
- t ((method = get_clut_method(sitename_ = settings->monitors_id[i])) < 0);
- if (NONE_METHOD) break;
- sitename_ = strchr(sitename_, '=');
- xstrdup(&sitename, sitename_ ? sitename_ + 1 : NULL);
- t ((error = libgamma_site_initialise(sites + sites_n, method, sitename)));
- sitename = NULL, site = sites[sites_n++];
- xrealloc(&parts, parts_n + site.partitions_available);
- for (j = 0; j < site.partitions_available; j++) {
- t ((error = libgamma_partition_initialise(parts + parts_n, &site, j)));
- parts_n++;
- }
- break;
-
- case 'm':
- if (NONE_METHOD) break;
- /* TODO -m */
- break;
-
- case 'e':
- if (NONE_METHOD) break;
- /* TODO -e */
- break;
- }
- }
-
- SHRINK(&sites, sites_n + 1);
-
- return 0;
-fail:
- if (error) libgamma_perror(argv0, error), errno = 0;
- CLEANUP(free(sitename));
- return -1;
-}
-
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