cleaning up code
This commit is contained in:
Adrien Schildknecht
parent
7d4aecffc2
commit
355873d2da
2
Makefile
2
Makefile
@ -1,6 +1,6 @@
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CFILES=xcwd.c
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CC=gcc
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CFLAGS=-Wall -Werror -std=gnu89 #-DDEBUG -g
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CFLAGS=-Wall -Werror -std=gnu99
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LDFLAGS=-lX11
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EXE="xcwd"
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O=${CFILES:.c=.o}
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102
xcwd.c
102
xcwd.c
@ -12,10 +12,15 @@
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#include <sys/stat.h>
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#include <X11/Xlib.h>
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#define DEBUG 1
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#define XA_STRING (XInternAtom(dpy, "STRING", 0))
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#define XA_CARDINAL (XInternAtom(dpy, "CARDINAL", 0))
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#define XA_WM_STATE (XInternAtom(dpy, "WM_STATE", 0))
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#define LOG(fmt, ...) \
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do { if (DEBUG) fprintf(stderr, fmt, __VA_ARGS__); } while (0)
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Display *dpy;
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typedef struct processes_s *processes_t;
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@ -41,13 +46,11 @@ int ppidCmp(const void *p1, const void *p2)
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static Window focusedWindow()
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{
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Window focuswin, root;
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int focusrevert;
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int format, status;
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Atom type;
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Window focuswin, root, *children;
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int format, status, focusrevert;
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unsigned long nitems, after;
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unsigned char *data;
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Atom type;
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Window* children;
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unsigned int nchildren;
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dpy = XOpenDisplay (NULL);
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@ -57,19 +60,17 @@ static Window focusedWindow()
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root = XDefaultRootWindow(dpy);
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do {
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status = XGetWindowProperty(dpy, focuswin, XA_WM_STATE, 0, 65536, 0,
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status = XGetWindowProperty(dpy, focuswin, XA_WM_STATE, 0, 1024, 0,
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XA_WM_STATE, &type, &format, &nitems, &after, &data);
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if(status == Success && data) {
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if (status == Success && data) {
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XFree(data);
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#ifdef DEBUG
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fprintf(stderr, "Window ID = %lu\n", focuswin);
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#endif
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LOG("Window ID = %lu\n", focuswin);
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return focuswin;
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}
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else
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return 0;
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XQueryTree(dpy, focuswin, &root, &focuswin, &children, &nchildren);
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#ifdef DEBUG
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fprintf(stderr, "Current window do not have WM_STATE, getting parent\n");
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#endif
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LOG("%s", "Current window does not have WM_STATE, getting parent\n");
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} while(focuswin != root);
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return 0;
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@ -84,20 +85,15 @@ static long windowPid(Window focuswin)
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unsigned long nitems, after;
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unsigned char *data;
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status = XGetWindowProperty(dpy, focuswin, nameAtom, 0, 65536, 0,
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status = XGetWindowProperty(dpy, focuswin, nameAtom, 0, 1024, 0,
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XA_CARDINAL, &type, &format, &nitems, &after, &data);
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if(status == Success) {
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if (data) {
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if (status == Success && data) {
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pid = *((long*)data);
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XFree(data);
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LOG("_NET_WM_PID = %lu\n", pid);
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}
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}
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#ifdef DEBUG
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if(pid == -1)
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fprintf(stderr, "_NET_WM_PID not found\n");
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else
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fprintf(stderr, "_NET_WM_PID = %lu\n", pid);
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#endif
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LOG("%s", "_NET_WM_PID not found\n");
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return pid;
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}
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@ -114,27 +110,20 @@ static char* windowStrings(Window focuswin, size_t *size, char* hint)
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if (XGetWindowProperty(dpy, focuswin, nameAtom, 0, 1024, 0, AnyPropertyType,
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&type, &format, size, &after, &data) == Success) {
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if (data) {
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if(type == XA_STRING) {
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if (type == XA_STRING) {
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ret = malloc(sizeof(char) * *size);
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#ifdef DEBUG
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fprintf(stderr, "%s = ", hint);
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#endif
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for(i = 0; i < *size; ++i) {
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#ifdef DEBUG
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fprintf(stderr, "%c", data[i] == 0 ? ' ' : data[i]);
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#endif
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LOG("%s = ", hint);
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for (i = 0; i < *size; ++i) {
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LOG("%c", data[i] == 0 ? ' ' : data[i]);
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ret[i] = data[i];
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}
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#ifdef DEBUG
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fprintf(stderr, "\n");
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#endif
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LOG("%s", "\n");
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}
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XFree(data);
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}
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#ifdef DEBUG
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else
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fprintf(stderr, "%s not found\n", hint);
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#endif
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LOG("%s not found\n", hint);
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}
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return ret;
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}
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@ -155,9 +144,7 @@ static processes_t getProcesses(void)
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p = malloc(sizeof(struct processes_s));
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p->ps = malloc(globbuf.gl_pathc * sizeof(struct proc_s));
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#ifdef DEBUG
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fprintf(stderr, "Found %ld processes\n", globbuf.gl_pathc);
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#endif
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LOG("Found %ld processes\n", globbuf.gl_pathc);
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for (i = j = 0; i < globbuf.gl_pathc; i++) {
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char name[32];
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FILE *tn;
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@ -170,10 +157,8 @@ static processes_t getProcesses(void)
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continue;
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fscanf(tn, "%ld (%32[^)] %*3c %ld", &p->ps[j].pid, p->ps[j].name,
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&p->ps[j].ppid);
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#ifdef DEBUG
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fprintf(stderr, "\t%-20s\tpid=%6ld\tppid=%6ld\n", p->ps[j].name,
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p->ps[j].pid, p->ps[j].ppid);
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#endif
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LOG("\t%-20s\tpid=%6ld\tppid=%6ld\n", p->ps[j].name, p->ps[j].pid,
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p->ps[j].ppid);
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fclose(tn);
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j++;
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}
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@ -191,7 +176,7 @@ static long lastChild(processes_t p, long pid)
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res = (struct proc_s *)bsearch(&key, p->ps, p->n,
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sizeof(struct proc_s), ppidCmp);
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pid = res ? res->pid : -1;
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}while(pid != -1);
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} while(pid != -1);
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return key.ppid;
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}
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@ -199,11 +184,12 @@ static void readPath(long pid)
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{
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char buf[255];
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char path[64];
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ssize_t len;
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snprintf(path, sizeof(path), "/proc/%ld/cwd", pid);
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#ifdef DEBUG
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fprintf(stderr, "Read %s\n", path);
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#endif
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readlink(path, buf, 255);
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LOG("Read %s\n", path);
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if ((len = readlink(path, buf, 255)) != -1)
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buf[len] = '\0';
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fprintf(stdout, "%s\n", buf);
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}
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@ -212,14 +198,14 @@ int main(int argc, const char *argv[])
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processes_t p;
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long pid;
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Window w = focusedWindow();
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if(w == 0) {
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if (w == 0) {
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fprintf(stdout, "%s\n", getenv("HOME"));
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return EXIT_FAILURE;
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}
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pid = windowPid(w);
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p = getProcesses();
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if(pid != -1) { // WM_NET_PID
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if (pid != -1) {
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qsort(p->ps, p->n, sizeof(struct proc_s), ppidCmp);
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}
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else {
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@ -230,32 +216,26 @@ int main(int argc, const char *argv[])
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qsort(p->ps, p->n, sizeof(struct proc_s), nameCmp);
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strings = windowStrings(w, &size, "WM_CLASS");
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for(i = 0; i < size; i += strlen(strings + i) + 1) {
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#ifdef DEBUG
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fprintf(stderr, "pidof %s\n", strings + i);
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#endif
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LOG("pidof %s\n", strings + i);
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strcpy(key.name, strings + i);
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res = (struct proc_s *)bsearch(&key, p->ps, p->n,
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sizeof(struct proc_s), nameCmp);
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if(res)
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break;
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}
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if(res) {
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if (res) {
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pid = res->pid;
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#ifdef DEBUG
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fprintf(stderr, "Found %s (%ld)\n", res->name, res->pid);
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#endif
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LOG("Found %s (%ld)\n", res->name, res->pid);
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}
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if(size != 0)
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if (size != 0)
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free(strings);
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}
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if(pid != -1) {
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if (pid != -1) {
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pid = lastChild(p, pid);
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readPath(pid);
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}
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else {
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#ifdef DEBUG
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fprintf(stderr, "getenv $HOME...\n");
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#endif
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LOG("%s", "getenv $HOME...\n");
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fprintf(stdout, "%s\n", getenv("HOME"));
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}
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freeProcesses(p);
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