Prepare the switch to Go

1 files changed, 0 insertions, 318 deletions

diff --git a/mstatus.c b/mstatus.c
deleted file mode 100644
index 9e68eb3..0000000
--- a/mstatus.c
+++ /dev/null
@@ -1,318 +0,0 @@
-#define _GNU_SOURCE
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <ctype.h>
-#include <errno.h>
-#include <linux/limits.h>
-#include <paths.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdnoreturn.h>
-#include <signal.h>
-#include <string.h>
-#include <syslog.h>
-#include <unistd.h>
-
-#ifdef HAS_DWM
-	#include <X11/Xlib.h>
-#endif
-
-#define CTOI(x) ((x) ^ 48)
-
-struct Block {
-	int pos;
-	char *text;
-	bool remove;
-};
-
-bool rflag;
-const char *argv0;
-struct {
-	char *str;
-	size_t len;
-} seperator = {.str = " | ", .len = 3};
-
-static noreturn void usage(void);
-static noreturn void die(const char *);
-static void *xrealloc(void *, size_t);
-static void xfree(char **);
-static void write_status(struct Block);
-static bool process(char *, struct Block *);
-static void create_fifo(char *);
-
-#ifdef HAS_DWM
-static void daemonize(void);
-static void xfork(void);
-#endif
-
-void
-usage(void)
-{
-	fprintf(stderr, "Usage: %s [-r] [-s seperator]\n", argv0);
-	exit(EXIT_FAILURE);
-}
-
-void
-die(const char *s)
-{
-	char *err = strerror(errno);
-	syslog(LOG_ERR, "%s: %s", s, err);
-	fprintf(stderr, "%s: %s: %s\n", argv0, s, err);
-	exit(EXIT_FAILURE);
-}
-
-#ifdef HAS_DWM
-void
-xfork(void)
-{
-	pid_t pid = fork();
-	if (pid == -1)
-		die("fork");
-	if (pid != 0)
-		exit(EXIT_SUCCESS);
-}
-#endif
-
-void *
-xrealloc(void *ptr, size_t size)
-{
-	void *ret;
-	if (!(ret = realloc(ptr, size)))
-		die("realloc");
-	return ret;
-}
-
-void
-xfree(char **ptr)
-{
-	free(*ptr);
-	*ptr = NULL;
-}
-
-void
-write_status(struct Block b)
-{
-	static struct {
-		char **blocks;
-		int count;
-		size_t length;
-	} sb;
-
-	if (b.remove) {
-		if (b.pos > sb.count)
-			return;
-
-		/* b.remove && !b.pos is a special case to remove everything from the bar */
-		if (!b.pos) {
-			for (int i = 0; i < sb.count; i++)
-				free(sb.blocks[i]);
-			sb.count = 0;
-			sb.blocks = xrealloc(sb.blocks, sizeof(char *));
-			goto update_bar;
-		}
-
-		/* If the block is not NULL we free it */
-		if (sb.blocks[--b.pos]) {
-			sb.length -= strlen(sb.blocks[b.pos]);
-			xfree(&sb.blocks[b.pos]);
-		}
-
-		/* If the block is the last one, we resize the bar to remove trailing NULL blocks */
-		if (b.pos + 1 == sb.count) {
-			for (; !sb.blocks[b.pos] && b.pos; b.pos--)
-				sb.count--;
-			sb.blocks = xrealloc(sb.blocks, sizeof(char *) * ++b.pos);
-		}
-		goto update_bar;
-	}
-
-	/* If the position exceeds the space allocated, allocate more blocks */
-	if (b.pos > sb.count) {
-		sb.blocks = xrealloc(sb.blocks, sizeof(char *) * b.pos);
-		/* Make sure to set all the newly allocated blocks to NULL */
-		for (int i = sb.count; i < b.pos; i++)
-			sb.blocks[i] = NULL;
-		sb.count = b.pos;
-	}
-
-	/* If the block is NULL we dont need to bother with strlen and free */
-	if (sb.blocks[--b.pos]) {
-		sb.length -= strlen(sb.blocks[b.pos]);
-		xfree(&sb.blocks[b.pos]);
-	}
-	if (!(sb.blocks[b.pos] = strdup(b.text)))
-		die("strdup");
-	sb.length += strlen(b.text);
-
-	/* The buffer to store the text that will be displayed in. It needs space for the text, the
-	 * seperators between the different blocks, the NUL byte at the end, and the right padding
-	 * space.
-	 */
-update_bar:;
-	char buf[sb.length + (sb.count - 1) * seperator.len + 2];
-	memset(buf, '\0', sizeof(buf));
-
-	/* Double loops so that the seperator isnt printed to the left of the first block */
-	int i;
-	char *bufptr = buf;
-	for (i = 0; i < sb.count; i++) {
-		if (sb.blocks[i]) {
-			bufptr = stpcpy(buf, sb.blocks[i]);
-			break;
-		}
-	}
-	while (++i < sb.count) {
-		if (sb.blocks[i])
-			bufptr = stpcpy(stpcpy(bufptr, seperator.str), sb.blocks[i]);
-	}
-	if (rflag)
-		strcat(buf, " ");
-
-#ifdef HAS_DWM
-	/* Xlib magic to set the DWM status */
-	Display *dpy = XOpenDisplay(NULL);
-	int screen = DefaultScreen(dpy);
-	Window root = RootWindow(dpy, screen);
-	(void) XStoreName(dpy, root, buf);
-	(void) XCloseDisplay(dpy);
-#else
-	puts(buf);
-#endif
-}
-
-bool
-process(char *line, struct Block *b)
-{
-	if (*line == '-') {
-		b->remove = true;
-		line++;
-	} else
-		b->remove = false;
-
-	if (!isdigit(*line))
-		b->pos = 1; /* Default position */
-	else {
-		b->pos = 0;
-		while (isdigit(*line))
-			b->pos = b->pos * 10 + CTOI(*line++);
-		if (!b->pos && !b->remove)
-			return false;
-	}
-
-	b->text = line;
-	return true;
-}
-
-void
-create_fifo(char *fifo_path)
-{
-	char *runtime_dir = getenv("XDG_RUNTIME_DIR");
-	if (runtime_dir) {
-		size_t end = strlen(runtime_dir) - 1;
-		if (runtime_dir[end] == '/')
-			runtime_dir[end] = '\0';
-		sprintf(fifo_path, "%s/%s.pipe", runtime_dir, argv0);
-	} else
-		sprintf(fifo_path, _PATH_VARRUN "user/%d/%s.pipe", getuid(), argv0);
-
-	umask(0);
-
-create_fifo:
-	if (mkfifo(fifo_path, DEFFILEMODE) == -1) {
-		if (errno == EEXIST) {
-			if (unlink(fifo_path) == -1)
-				die("unlink");
-			goto create_fifo;
-		} else
-			die("mkfifo");
-	}
-
-	syslog(LOG_INFO, "Created input FIFO '%s'", fifo_path);
-}
-
-#ifdef HAS_DWM
-void
-daemonize(void)
-{
-	xfork();
-	if (setsid() == -1)
-		die("setsid");
-
-	(void) signal(SIGCHLD, SIG_IGN);
-	xfork();
-
-	(void) chdir("/");
-	(void) close(STDIN_FILENO);
-	(void) close(STDOUT_FILENO);
-	(void) close(STDERR_FILENO);
-
-	stdin = fopen(_PATH_DEVNULL, "r");
-	stdout = fopen(_PATH_DEVNULL, "w+");
-	stderr = fopen(_PATH_DEVNULL, "w+");
-
-	syslog(LOG_INFO, "Daemonized '%s'", argv0);
-}
-#endif
-
-int
-main(int argc, char **argv)
-{
-	argv0 = argv[0];
-
-	int opt;
-	while ((opt = getopt(argc, argv, ":rs:")) != -1) {
-		switch (opt) {
-		case 'r':
-			rflag = true;
-			break;
-		case 's':
-			seperator.str = optarg;
-			seperator.len = strlen(optarg);
-			break;
-		default:
-			usage();
-		}
-	}
-
-	openlog(argv0, LOG_PID | LOG_CONS,
-#ifdef HAS_DWM
-		LOG_DAEMON
-#else
-		LOG_USER
-#endif
-	);
-	char fifo_path[PATH_MAX];
-	create_fifo(fifo_path);
-#ifdef HAS_DWM
-	daemonize();
-#endif
-
-	char *line = NULL;
-	size_t len = 0;
-	while (true) {
-		FILE *fp;
-		if (!(fp = fopen(fifo_path, "r")))
-			die("fopen");
-
-		ssize_t nr;
-		while ((nr = getline(&line, &len, fp)) != -1) {
-			/* For some reason output with newlines can cause performance issues */
-			if (line[--nr] == '\n')
-				line[nr] = '\0';
-
-			syslog(LOG_DEBUG, "Recieved command '%s'", line);
-
-			struct Block b;
-			if (!process(line, &b))
-				continue;
-			write_status(b);
-		}
-		if (ferror(fp))
-			die("getline");
-
-		(void) fclose(fp);
-	}
-	/* NOTREACHED */
-}