error.c

/* Copyright (c) 1994-1996 David Hogan, see README for licence details */
#include <stdio.h>
#include <stdlib.h>
#include <xcb/xcb.h>
#include <xcb/xcb_icccm.h>
#include <xcb/xcb_event.h>
#include "dat.h"
#include "fns.h"

int ignore_badwindow;

void fatal(char *s)
{
    fprintf(stderr, "9wm: ");
    perror(s);
    fprintf(stderr, "\n");
    exit(1);
}

void handler(xcb_generic_error_t *e)
{
    char msg[80], req[80], number[80];

    if (initting && (e->major_code == XCB_CHANGE_WINDOW_ATTRIBUTES)
                && (e->error_code == XCB_ACCESS)) {
        fprintf(stderr, "9wm: it looks like there's already a window manager running;  9wm not started\n");
        exit(1);
    }

    if (ignore_badwindow && (e->error_code == XCB_WINDOW || e->error_code == XCB_COLORMAP))
        return;

    fprintf(stderr, "9wm: request=%s (major %d, minor %d),",
            xcb_event_get_request_label(e->major_code),
            e->major_code, e->minor_code);
    fprintf(stderr, " error=%s (%d), resource_id=%d\n",
        xcb_event_get_error_label(e->error_code),
        e->error_code, e->resource_id);

    if (initting) {
        fprintf(stderr, "9wm: failure during initialisation; aborting\n");
        exit(1);
    }
}

void flush_errors(void)
{
    xcb_generic_event_t *ev;

    while ((ev = checkmaskevent(dpy, 0)) != NULL)
        handler((xcb_generic_error_t *)ev);
}

void graberror(char *f, int err)
{
    char *s;

    switch (err) {
        case XCB_GRAB_STATUS_NOT_VIEWABLE:
            s = "not viewable";
            break;
        case XCB_GRAB_STATUS_ALREADY_GRABBED:
            s = "already grabbed";
            break;
        case XCB_GRAB_STATUS_FROZEN:
            s = "grab frozen";
            break;
        case XCB_GRAB_STATUS_INVALID_TIME:
            s = "invalid time";
            break;
        case XCB_GRAB_STATUS_SUCCESS:
            return;
        default:
            fprintf(stderr, "9wm: %s: grab error: %d\n", f, err);
            return;
    }
    fprintf(stderr, "9wm: %s: grab error: %s\n", f, s);
}

#ifdef  DEBUG

void dotrace(char *s, Client *c, xcb_generic_event_t *e)
{
    fprintf(stderr, "9wm: %s: c=0x%x", s, c);
    if (c)
        fprintf(stderr, " x %d y %d dx %d dy %d w 0x%x parent 0x%x",
            c->x, c->y, c->dx, c->dy, c->window, c->parent);
#ifdef  DEBUG_EV
    if (e) {
        fprintf(stderr, "\n\t");
        showevent(e);
    }
#endif
    fprintf(stderr, "\n");
}
#endif