Use simple make file, remove info manual, and other crap, change style, use arg.h instead of getopt, and change license3

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

1 files changed, 0 insertions, 491 deletions

diff --git a/src/unstickpixels.c b/src/unstickpixels.c
deleted file mode 100644
index 9a59aa3..0000000
--- a/src/unstickpixels.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/**
- * unstickpixels – screen loop to try to unstick stuck pixels
- * 
- * Copyright © 2013, 2015  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/>.
- */
-#define _XOPEN_SOURCE 700
-#define _DEFAULT_SOURCE
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-#include <errno.h>
-#include <ctype.h>
-#include <signal.h>
-#include <sys/wait.h>
-
-#include <libgamma.h>
-
-
-
-#define t(...)  do { if (__VA_ARGS__) goto fail; } while (0)
-
-
-#define WELCOME_MESSAGE								\
-  "\033[H\033[01;31mWARNING: Do not use this if you have epilepsia.\033[00m\n"	\
-  "\n"										\
-  "It is recommended to massage the defective dots, whilst\n"			\
-  "running this program.\n"							\
-  "\n"										\
-  "Press C-c to quit, and Enter to start (C-c will quit).\n"			\
-  "\n"										\
-  "\n"										\
-  "You should not have to run this program. If the manufacture or\n"		\
-  "reseller of your monitor refuse to replace or repair the monitor\n"  	\
-  "that was broken, because of manufacturing error, when it was\n"		\
-  "chiped to you, please consider yelling at the support, threaten\n"		\
-  "to report the personally because of involvement in organised\n"		\
-  "crime (not replacing hardware that was chipped broken when you\n"		\
-  "selled it is a crime, and they do this in an organised fashion\n"		\
-  "to make money), call their executive director persistently at\n"		\
-  "inconvenient times, report them applicable board for consumer\n"		\
-  "disputes/complaints or equivalent agency. If this program does\n"		\
-  "not help, and the manufacture is Packard Bell, or its\n"			\
-  "supersidiary Acer, tell them that you have tried a program\n"		\
-  "that was prompted by the complete suckness and incapability\n"		\
-  "to repair defects that they have agreed to repair. They suck!\n"		\
-  "\n"										\
-  "\n"										\
-  "\n"										\
-  "Copyright © 2013, 2015  Mattias Andrée (maandree@member.fsf.org)\n"  	\
-  "\n"										\
-  "This program is free software: you can redistribute it and/or modify\n"	\
-  "it under the terms of the GNU General Public License as published by\n"	\
-  "the Free Software Foundation, either version 3 of the License, or\n"		\
-  "(at your option) any later version.\n"					\
-  "\n"										\
-  "This program is distributed in the hope that it will be useful,\n"		\
-  "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"		\
-  "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"		\
-  "GNU General Public License for more details.\n"				\
-  "\n"										\
-  "You should have received a copy of the GNU General Public License\n"		\
-  "along with this program.  If not, see <http://www.gnu.org/licenses/>."
-
-
-/**
- * The name of the process.
- */
-const char* argv0;
-
-/**
- * Should we exit?
- */
-static volatile sig_atomic_t please_exit = 0;
-
-/**
- * The name of the site.
- */
-static char* sitename = NULL;
-
-/**
- * The site.
- */
-static libgamma_site_state_t site;
-
-/**
- * The partitions.
- */
-static libgamma_partition_state_t* restrict* restrict parts = NULL;
-
-/**
- * The CRTC:s.
- */
-static libgamma_crtc_state_t* restrict* restrict crtcs = NULL;
-
-/**
- * The ramps to use when displaying red.
- */
-static libgamma_gamma_ramps16_t* restrict* restrict ramps_red   = NULL;
-
-/**
- * The ramps to use when displaying green.
- */
-static libgamma_gamma_ramps16_t* restrict* restrict ramps_green = NULL;
-
-/**
- * The ramps to use when displaying blue.
- */
-static libgamma_gamma_ramps16_t* restrict* restrict ramps_blue  = NULL;
-
-/**
- * The original ramps.
- */
-static libgamma_gamma_ramps16_t* restrict* restrict ramps_saved = NULL;
-
-/**
- * 2: `site` initialised and all ramps saved.
- * 1: `site` initialised.
- * 0: nothing done.
- */
-static int clut_state = 0;
-
-
-
-/**
- * Parse interval argument.
- * 
- * @param   argv      The interval argument.
- * @param   interval  Output parameter for the interval.
- * @param   nonzero   With be set to zero if the interval is zero,
- *                    otherwise it is set to a non-zero value (1).
- * @return            0 on success, -1 on error.
- */
-static int get_interval(const char* restrict arg, struct timespec* restrict interval, int* restrict nonzero)
-{
-  char* end;
-  *nonzero = 1;
-  errno = EINVAL;
-  t (!isdigit(*arg));
-  interval->tv_sec = (time_t)(errno = 0, strtol)(arg, &end, 10);
-  t (errno || (errno = EINVAL, *end));
-  interval->tv_nsec = interval->tv_sec % 1000;
-  interval->tv_sec /= 1000;
-  interval->tv_nsec *= 1000000L;
-  if (interval->tv_sec == 0)
-    if (interval->tv_nsec == 0)
-      *nonzero = 0;
-  return 0;
- fail:
-  return -1;
-}
-
-
-/**
- * Wrapper for fork(3) that clocks all signals in the parent.
- * 
- * @return  See fork(3).
- */
-static pid_t xfork(void)
-{
-  sigset_t set;
-  pid_t pid;
-  sigfillset(&set);
-  sigprocmask(SIG_BLOCK, &set, 0);
-  pid = fork();
-  if (pid != -1)
-    sigprocmask(SIG_UNBLOCK, &set, 0);
-  return pid;
-}
-
-
-/**
- * Print usage information and exit.
- */
-static void usage(void)
-{
-  exit(fprintf(stderr, "Usage: %s [-v] [--] [SLEEP_INTERVAL_MS]\n",
-	       strrchr(argv0, '/') ? (strrchr(argv0, '/') + 1) : argv0
-	       ) < 0 ? 1 : 2);
-}
-
-
-/**
- * Uninitialise the CLUT backend.
- * 
- * @return  0 on success, -1 on error.
- */
-static void term_clut()
-{
-  size_t i, j;
-  if (clut_state == 2)
-    for (j = 0; j < 2; j++, usleep(1000000L / 10L))
-      for (i = 0; crtcs && crtcs[i]; i++, usleep(1000000L / 100L))
-	libgamma_crtc_set_gamma_ramps16(crtcs[i], *(ramps_saved[i]));
-  for (i = 0; crtcs && crtcs[i]; i++)
-    {
-      libgamma_crtc_free(crtcs[i]);
-      libgamma_gamma_ramps16_free(ramps_red[i]);
-      libgamma_gamma_ramps16_free(ramps_green[i]);
-      libgamma_gamma_ramps16_free(ramps_blue[i]);
-      libgamma_gamma_ramps16_free(ramps_saved[i]);
-    }
-  free((void*)crtcs);
-  free((void*)ramps_red);
-  free((void*)ramps_green);
-  free((void*)ramps_blue);
-  free((void*)ramps_saved);
-  for (i = 0; parts && parts[i]; i++)
-    libgamma_partition_free(parts[i]);
-  free((void*)parts);
-  free((void*)sitename);
-  if (clut_state)
-    libgamma_site_destroy(&site);
-  sitename = NULL;
-  parts = NULL;
-  crtcs = NULL;
-  ramps_red = ramps_green = ramps_blue = ramps_saved = NULL;
-  clut_state = 0;
-}
-
-
-/**
- * Initialise the CLUT backend.
- * 
- * @return  0 on success, -1 on error.
- */
-static int init_clut()
-{
-  int method, error = 0;
-  size_t i, j, k, n = 0;
-  libgamma_crtc_information_t info;
-  
-  if (libgamma_list_methods(&method, 1, 0) < 1)
-    {
-      fprintf(stderr, "%s: could not get adjustment method, try '%s -v'.\n", argv0, argv0);
-      return -1;
-    }
-  
-  sitename = libgamma_method_default_site(method);
-  if (sitename)
-    {
-      sitename = strdup(sitename);
-      t (sitename == NULL);
-    }
-  t ((error = libgamma_site_initialise(&site, method, sitename)));
-  sitename = NULL;
-  
-  clut_state++;
-  
-  if (site.partitions_available == 0)
-    {
-      fprintf(stderr, "%s: could find any graphics card/screen, try '%s -v'.\n", argv0, argv0);
-      errno = 0;
-      goto fail;
-    }
-  
-  t (!(parts = calloc(site.partitions_available + 1, sizeof(*parts))));
-  for (i = 0; i < site.partitions_available; i++)
-    {
-      t (!(parts[i] = calloc(1, sizeof(**parts))));
-      t ((errno = libgamma_partition_initialise(parts[i], &site, i)));
-      n += parts[i]->crtcs_available;
-    }
-  
-  if (n == 0)
-    {
-      fprintf(stderr, "%s: could find any CRTC, try '%s -v'.\n", argv0, argv0);
-      errno = 0;
-      goto fail;
-    }
-  
-  t (!(crtcs       = calloc(n + 1, sizeof(*crtcs))));
-  t (!(ramps_red   = calloc(n + 1, sizeof(*ramps_red))));
-  t (!(ramps_green = calloc(n + 1, sizeof(*ramps_green))));
-  t (!(ramps_blue  = calloc(n + 1, sizeof(*ramps_blue))));
-  t (!(ramps_saved = calloc(n + 1, sizeof(*ramps_saved))));
-  for (i = k = 0; i < site.partitions_available; i++)
-    for (j = 0; j < parts[i]->crtcs_available; j++, k++)
-      {
-	t (!(crtcs[k]       = calloc(1, sizeof(**crtcs))));
-	t (!(ramps_red[k]   = calloc(1, sizeof(**ramps_red))));
-	t (!(ramps_green[k] = calloc(1, sizeof(**ramps_green))));
-	t (!(ramps_blue[k]  = calloc(1, sizeof(**ramps_blue))));
-	t (!(ramps_saved[k] = calloc(1, sizeof(**ramps_saved))));
-	t ((error = libgamma_crtc_initialise(crtcs[k], parts[i], j)));
-	if (libgamma_get_crtc_information(&info, crtcs[k], LIBGAMMA_CRTC_INFO_GAMMA_SIZE))
-	  t ((error = info.gamma_size_error));
-	ramps_red[k]->red_size   = info.red_gamma_size;
-	ramps_red[k]->green_size = info.green_gamma_size;
-	ramps_red[k]->blue_size  = info.blue_gamma_size;
-	*(ramps_saved[k]) = *(ramps_blue[k]) = *(ramps_green[k]) = *(ramps_red[k]);
-	t (libgamma_gamma_ramps16_initialise(ramps_red[k]));
-	t (libgamma_gamma_ramps16_initialise(ramps_green[k]));
-	t (libgamma_gamma_ramps16_initialise(ramps_blue[k]));
-	t (libgamma_gamma_ramps16_initialise(ramps_saved[k]));
-	memset(ramps_red[k]->red,     ~0, ramps_red[k]->red_size     * sizeof(*(ramps_red[k]->red)));
-	memset(ramps_red[k]->green,    0, ramps_red[k]->green_size   * sizeof(*(ramps_red[k]->green)));
-	memset(ramps_red[k]->blue,     0, ramps_red[k]->blue_size    * sizeof(*(ramps_red[k]->blue)));
-	memset(ramps_green[k]->red,    0, ramps_green[k]->red_size   * sizeof(*(ramps_green[k]->red)));
-	memset(ramps_green[k]->green, ~0, ramps_green[k]->green_size * sizeof(*(ramps_green[k]->green)));
-	memset(ramps_green[k]->blue,   0, ramps_green[k]->blue_size  * sizeof(*(ramps_green[k]->blue)));
-	memset(ramps_blue[k]->red,     0, ramps_blue[k]->red_size    * sizeof(*(ramps_blue[k]->red)));
-	memset(ramps_blue[k]->green,   0, ramps_blue[k]->green_size  * sizeof(*(ramps_blue[k]->green)));
-	memset(ramps_blue[k]->blue,   ~0, ramps_blue[k]->blue_size   * sizeof(*(ramps_blue[k]->blue)));
-	t ((error = libgamma_crtc_get_gamma_ramps16(crtcs[k], ramps_saved[k])));
-      }
-  
-  clut_state++;
-  
-  return 0;
- fail:
-  if (error)
-    libgamma_perror(argv0, error);
-  else if (errno)
-    perror(argv0);
-  term_clut();
-  errno = 0;
-  return -1;
-}
-
-
-/**
- * The loop, using the graphic cards' colour lookup tables.
- * 
- * @param  interval  The sleep interval, `NULL` for no sleep.
- */
-static void loop_clut(const struct timespec* restrict interval)
-{
-  size_t i;
-  int error;
-  
-  while (!please_exit)
-    {
-      for (i = 0; crtcs[i]; i++)
-	t ((error = libgamma_crtc_set_gamma_ramps16(crtcs[i], *(ramps_red[i]))));
-      if (interval)
-	t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-      
-      for (i = 0; crtcs[i]; i++)
-	t ((error = libgamma_crtc_set_gamma_ramps16(crtcs[i], *(ramps_green[i]))));
-      if (interval)
-	t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-      
-      for (i = 0; crtcs[i]; i++)
-	t ((error = libgamma_crtc_set_gamma_ramps16(crtcs[i], *(ramps_blue[i]))));
-      if (interval)
-	t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-    }
-  return;
- fail:
-  if (error)
-    libgamma_perror(argv0, error), errno = 0;
-}
-
-
-/**
- * The loop, using Linux VT.
- * 
- * @param  interval  The sleep interval, `NULL` for no sleep.
- */
-static void loop_vt(const struct timespec* restrict interval)
-{
-  while (!please_exit)
-    {
-      t (printf("\033]P0FF0000\033[2J") == -1);
-      t (fflush(stdout));
-      if (interval)
-	t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-      
-      t (printf("\033]P000FF00\033[2J") == -1);
-      t (fflush(stdout));
-      if (interval)
-	t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-      
-      t (printf("\033]P00000FF\033[2J") == -1);
-      t (fflush(stdout));
-      if (interval)
-	t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-    }
-  return;
- fail:
-  return;
-}
-
-
-/**
- * Signal handler for signals that exit the program.
- * 
- * @param  signo  The caught signal.
- */
-static void sigexit(int signo)
-{
-  signal(signo, sigexit);
-  please_exit = 1;
-}
-
-
-int main(int argc, char* argv[])
-{
-  int started = 0;
-  int with_sleep = 0;
-  struct timespec interval;
-  int status, vt = 0, c = 0;
-  pid_t pid = -1;
-  int saved_errno;
-  
-  for (argv0 = (argc ? "unstickpixels" : *argv); c != -1;)
-    switch ((c = getopt(argc, argv, "v")))
-      {
-      case 'v':  vt = 1;
-      case -1:   break;
-      case '?':  usage();
-      default:   assert(0), abort();
-      }
-  if (optind < argc)
-    t (get_interval(argv[optind++], &interval, &with_sleep));
-  if (optind < argc)
-    usage();
-  
-  printf("\033[?25l\033[H\033[2J");
-  printf(WELCOME_MESSAGE);
-  fflush(stdout);
-  
-  siginterrupt(SIGHUP, 1);
-  siginterrupt(SIGTERM, 1);
-  siginterrupt(SIGINT, 1);
-  siginterrupt(SIGQUIT, 1);
-  signal(SIGHUP, sigexit);
-  signal(SIGTERM, sigexit);
-  signal(SIGINT, sigexit);
-  signal(SIGQUIT, sigexit);
-  
-  if (read(STDIN_FILENO, &started, 1) < 0)
-    goto done;
-  started = 1;
-  
-  if (vt)
-    t (printf("\033[H") == -1);
-  else
-    t (printf("\033[H\033[2JIf you can read this, try '%s -v'.\n", argv0) == -1);
-  t (fflush(stdout));
-  
-  t (vt ? 0 : init_clut());
-  
-  t (pid = xfork(), pid == -1);
-  if (pid)
-    goto parent;
-  
-  (vt ? loop_vt : loop_clut)(with_sleep ? &interval : NULL);
-  
- fail:
-  saved_errno = errno;
-  printf("%s\033[?25h\033[H\033[2J", (started && vt) ? "\033]P0000000" : "");
-  fflush(stdout);
-  if (!vt)
-    term_clut();
-  errno = saved_errno;
-  if (pid == -1)
-    {
-      if (errno == EINVAL)
-	usage();
-      return (errno && (errno != EINTR)) ? (perror(argv0), 1) : 1;
-    }
-  return 0;
-  
- parent:
-  waitpid(pid, &status, 0);
- done:
-  if (!vt)
-    term_clut();
-  printf("%s\033[?25h\033[H\033[2J", (started && vt) ? "\033]P0000000" : "");
-  fflush(stdout);
-  return WIFEXITED(status) ? WEXITSTATUS(status) : 0;
-}
-