diff --git a/dwmblocks/Makefile b/dwmblocks/Makefile new file mode 100644 index 0000000..75109ac --- /dev/null +++ b/dwmblocks/Makefile @@ -0,0 +1,36 @@ +PREFIX := /usr/local +CC := cc +CFLAGS := -pedantic -Wall -Wno-deprecated-declarations -Os +LDFLAGS := -lX11 + +# FreeBSD (uncomment) +#LDFLAGS += -L/usr/local/lib -I/usr/local/include +# # OpenBSD (uncomment) +#LDFLAGS += -L/usr/X11R6/lib -I/usr/X11R6/include + +all: options dwmblocks + +options: + @echo dwmblocks build options: + @echo "CFLAGS = ${CFLAGS}" + @echo "LDFLAGS = ${LDFLAGS}" + @echo "CC = ${CC}" + +dwmblocks: dwmblocks.c blocks.def.h blocks.h + ${CC} -o dwmblocks dwmblocks.c ${CFLAGS} ${LDFLAGS} + +blocks.h: + cp blocks.def.h $@ + +clean: + rm -f *.o *.gch dwmblocks + +install: dwmblocks + mkdir -p ${DESTDIR}${PREFIX}/bin + cp -f dwmblocks ${DESTDIR}${PREFIX}/bin + chmod 755 ${DESTDIR}${PREFIX}/bin/dwmblocks + +uninstall: + rm -f ${DESTDIR}${PREFIX}/bin/dwmblocks + +.PHONY: all options clean install uninstall diff --git a/dwmblocks/blocks.h b/dwmblocks/blocks.h new file mode 100644 index 0000000..6642b4a --- /dev/null +++ b/dwmblocks/blocks.h @@ -0,0 +1,12 @@ +//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*/ + + {"^d^ ^b#ffffff^^c#000000^  ^d^ ", " free -h | grep Mem | awk '{print $3}'", 10, 0}, + {"^d^ ^b#ffffff^^c#000000^  ^d^ ", " battery", 60, 0}, + {"^d^ ^b#ffffff^^c#000000^  ^d^ ", " date +%H:%M", 60, 0}, +}; + +//sets delimeter between status commands. NULL character ('\0') means no delimeter. +static char delim[] = ""; +static unsigned int delimLen = 0; diff --git a/dwmblocks/dwmblocks b/dwmblocks/dwmblocks new file mode 100755 index 0000000..60b9175 Binary files /dev/null and b/dwmblocks/dwmblocks differ diff --git a/dwmblocks/dwmblocks.c b/dwmblocks/dwmblocks.c new file mode 100644 index 0000000..befd252 --- /dev/null +++ b/dwmblocks/dwmblocks.c @@ -0,0 +1,213 @@ +#include +#include +#include +#include +#include +#ifndef NO_X +#include +#endif +#ifdef __OpenBSD__ +#define SIGPLUS SIGUSR1+1 +#define SIGMINUS SIGUSR1-1 +#else +#define SIGPLUS SIGRTMIN +#define SIGMINUS SIGRTMIN +#endif +#define LENGTH(X) (sizeof(X) / sizeof (X[0])) +#define CMDLENGTH 50 +#define MIN( a, b ) ( ( a < b) ? a : b ) +#define STATUSLENGTH (LENGTH(blocks) * CMDLENGTH + 1) + +typedef struct { + char* icon; + char* command; + unsigned int interval; + unsigned int signal; +} Block; +#ifndef __OpenBSD__ +void dummysighandler(int num); +#endif +void sighandler(int num); +void getcmds(int time); +void getsigcmds(unsigned int signal); +void setupsignals(); +void sighandler(int signum); +int getstatus(char *str, char *last); +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 char statusbar[LENGTH(blocks)][CMDLENGTH] = {0}; +static char statusstr[2][STATUSLENGTH]; +static int statusContinue = 1; +static int returnStatus = 0; + +//opens process *cmd and stores output in *output +void getcmd(const Block *block, char *output) +{ + strcpy(output, block->icon); + FILE *cmdf = popen(block->command, "r"); + if (!cmdf) + return; + 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 + pclose(cmdf); + return; + } + //only chop off newline if one is present at the end + i = output[i-1] == '\n' ? i-1 : i; + if (delim[0] != '\0') { + strncpy(output+i, delim, delimLen); + } + else + output[i++] = '\0'; + pclose(cmdf); +} + +void getcmds(int time) +{ + const Block* current; + 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]); + } +} + +void getsigcmds(unsigned int signal) +{ + const Block *current; + for (unsigned int i = 0; i < LENGTH(blocks); i++) { + current = blocks + i; + if (current->signal == signal) + getcmd(current,statusbar[i]); + } +} + +void setupsignals() +{ +#ifndef __OpenBSD__ + /* initialize all real time signals with dummy handler */ + for (int i = SIGRTMIN; i <= SIGRTMAX; i++) + signal(i, dummysighandler); +#endif + + for (unsigned int i = 0; i < LENGTH(blocks); i++) { + if (blocks[i].signal > 0) + signal(SIGMINUS+blocks[i].signal, sighandler); + } + +} + +int getstatus(char *str, char *last) +{ + strcpy(last, str); + str[0] = '\0'; + for (unsigned int i = 0; i < LENGTH(blocks); i++) + strcat(str, statusbar[i]); + str[strlen(str)-strlen(delim)] = '\0'; + 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; + 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); + return 1; +} +#endif + +void pstdout() +{ + if (!getstatus(statusstr[0], statusstr[1]))//Only write out if text has changed. + return; + printf("%s\n",statusstr[0]); + fflush(stdout); +} + + +void statusloop() +{ + setupsignals(); + int i = 0; + getcmds(-1); + while (1) { + getcmds(i++); + writestatus(); + if (!statusContinue) + break; + sleep(1.0); + } +} + +#ifndef __OpenBSD__ +/* this signal handler should do nothing */ +void dummysighandler(int signum) +{ + return; +} +#endif + +void sighandler(int signum) +{ + getsigcmds(signum-SIGPLUS); + writestatus(); +} + +void termhandler() +{ + statusContinue = 0; +} + +int main(int argc, char** argv) +{ + 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; +}