Update scripts

This is to make it easier to build dwmblocks without xlib so you can
use it on wayland or other x wms.

Makefile

@@ -1,8 +1,9 @@
 PREFIX ?= /usr/local
 CC ?= cc
+LDFLAGS = -lX11
 
 output: dwmblocks.c blocks.def.h blocks.h
-	${CC} `pkg-config --cflags x11 --libs x11` dwmblocks.c -o dwmblocks
+	${CC}  dwmblocks.c $(LDFLAGS) -o dwmblocks
 blocks.h:
 	cp blocks.def.h $@
 

blocks.def.h

@@ -1,9 +1,10 @@
 //Modify this file to change what commands output to your statusbar, and recompile using the make command.
 static const Block blocks[] = {
 	/*Icon*/	/*Command*/		/*Update Interval*/	/*Update Signal*/
-	{"Mem:", "free -h | awk '/^Mem/ { print $3\"/\"$2 }' | sed s/i//g",	30,		0},
-
-	{"", "date '+%b %d (%a) %I:%M%p'",					5,		0},
+	{"", "/home/vtimofei/scripts/volinfo",	                            0,		12},
+	{" ", "free -h | awk '/^Mem/ { print $3\"/\"$2 }' | sed s/i//g",	  30,		0},
+	{" ", "/home/vtimofei/scripts/get-layout",	                        0,		11},
+	{" ", "date '+%b %d (%a) %I:%M%p' ",					                      5,		0},
 };
 
 //sets delimeter between status commands. NULL character ('\0') means no delimeter.

dwmblocks.c

@@ -3,7 +3,9 @@
 #include<string.h>
 #include<unistd.h>
 #include<signal.h>
+#ifndef NO_X
 #include<X11/Xlib.h>
+#endif
 #ifdef __OpenBSD__
 #define SIGPLUS			SIGUSR1+1
 #define SIGMINUS		SIGUSR1-1
@@ -31,20 +33,27 @@ void getsigcmds(unsigned int signal);
 void setupsignals();
 void sighandler(int signum);
 int getstatus(char *str, char *last);
-void setroot();
 void statusloop();
 void termhandler();
+void pstdout();
+#ifndef NO_X
+void setroot();
+static void (*writestatus) () = setroot;
+static int setupX();
+static Display *dpy;
+static int screen;
+static Window root;
+#else
+static void (*writestatus) () = pstdout;
+#endif
 
 
 #include "blocks.h"
 
-static Display *dpy;
-static int screen;
-static Window root;
 static char statusbar[LENGTH(blocks)][CMDLENGTH] = {0};
 static char statusstr[2][STATUSLENGTH];
 static int statusContinue = 1;
-static void (*writestatus) () = setroot;
+static int returnStatus = 0;
 
 //opens process *cmd and stores output in *output
 void getcmd(const Block *block, char *output)
@@ -56,6 +65,8 @@ void getcmd(const Block *block, char *output)
 	int i = strlen(block->icon);
 	fgets(output+i, CMDLENGTH-i-delimLen, cmdf);
 	i = strlen(output);
+	if (i == 0)//return if block and command output are both empty
+		return;
 	if (delim[0] != '\0') {
 		//only chop off newline if one is present at the end
 		i = output[i-1] == '\n' ? i-1 : i;
@@ -69,8 +80,7 @@ void getcmd(const Block *block, char *output)
 void getcmds(int time)
 {
 	const Block* current;
-	for (unsigned int i = 0; i < LENGTH(blocks); i++)
-	{
+	for (unsigned int i = 0; i < LENGTH(blocks); i++) {
 		current = blocks + i;
 		if ((current->interval != 0 && time % current->interval == 0) || time == -1)
 			getcmd(current,statusbar[i]);
@@ -80,8 +90,7 @@ void getcmds(int time)
 void getsigcmds(unsigned int signal)
 {
 	const Block *current;
-	for (unsigned int i = 0; i < LENGTH(blocks); i++)
-	{
+	for (unsigned int i = 0; i < LENGTH(blocks); i++) {
 		current = blocks + i;
 		if (current->signal == signal)
 			getcmd(current,statusbar[i]);
@@ -96,8 +105,7 @@ void setupsignals()
         signal(i, dummysighandler);
 #endif
 
-	for (unsigned int i = 0; i < LENGTH(blocks); i++)
-	{
+	for (unsigned int i = 0; i < LENGTH(blocks); i++) {
 		if (blocks[i].signal > 0)
 			signal(SIGMINUS+blocks[i].signal, sighandler);
 	}
@@ -114,19 +122,27 @@ int getstatus(char *str, char *last)
 	return strcmp(str, last);//0 if they are the same
 }
 
+#ifndef NO_X
 void setroot()
 {
 	if (!getstatus(statusstr[0], statusstr[1]))//Only set root if text has changed.
 		return;
-	Display *d = XOpenDisplay(NULL);
-	if (d) {
-		dpy = d;
+	XStoreName(dpy, root, statusstr[0]);
+	XFlush(dpy);
+}
+
+int setupX()
+{
+	dpy = XOpenDisplay(NULL);
+	if (!dpy) {
+		fprintf(stderr, "dwmblocks: Failed to open display\n");
+		return 0;
 	}
 	screen = DefaultScreen(dpy);
 	root = RootWindow(dpy, screen);
-	XStoreName(dpy, root, statusstr[0]);
-	XCloseDisplay(dpy);
+	return 1;
 }
+#endif
 
 void pstdout()
 {
@@ -142,10 +158,11 @@ void statusloop()
 	setupsignals();
 	int i = 0;
 	getcmds(-1);
-	while (statusContinue)
-	{
+	while (1) {
 		getcmds(i++);
 		writestatus();
+		if (!statusContinue)
+			break;
 		sleep(1.0);
 	}
 }
@@ -171,16 +188,23 @@ void termhandler()
 
 int main(int argc, char** argv)
 {
-	for (int i = 0; i < argc; i++) //Handle command line arguments
-	{
+	for (int i = 0; i < argc; i++) {//Handle command line arguments
 		if (!strcmp("-d",argv[i]))
 			strncpy(delim, argv[++i], delimLen);
 		else if (!strcmp("-p",argv[i]))
 			writestatus = pstdout;
 	}
+#ifndef NO_X
+	if (!setupX())
+		return 1;
+#endif
 	delimLen = MIN(delimLen, strlen(delim));
 	delim[delimLen++] = '\0';
 	signal(SIGTERM, termhandler);
 	signal(SIGINT, termhandler);
 	statusloop();
+#ifndef NO_X
+	XCloseDisplay(dpy);
+#endif
+	return 0;
 }