Rewrite everything

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 0 insertions, 352 deletions

diff --git a/src/state.c b/src/state.c
deleted file mode 100644
index e5c2a42..0000000
--- a/src/state.c
+++ /dev/null
@@ -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;
-}
-