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xgetres.c
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xgetres.c
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#include <stdio.h>
#include <getopt.h>
#include <X11/Xresource.h>
static int print_xresource(const char *resource)
{
int ret;
XrmInitialize();
Display *display = XOpenDisplay(NULL);
if (NULL == display) {
fprintf(stderr, "Can't open display\n");
ret = -1;
goto cleanup;
}
char *resource_manager = XResourceManagerString(display);
if (NULL == resource_manager) {
fprintf(stderr, "Can't obtain RESOURCE_MANAGER\n");
ret = -1;
goto cleanup;
}
XrmDatabase db = XrmGetStringDatabase(resource_manager);
if (NULL == db) {
fprintf(stderr, "Can't open resource database\n");
ret = -1;
goto cleanup;
}
XrmValue value;
char *type;
if (XrmGetResource(db, resource, resource, &type, &value)) {
printf("%s\n", value.addr);
ret = 0;
} else {
// Resource not found
ret = 1;
}
cleanup:
if (NULL != display) {
XCloseDisplay(display);
}
return ret;
}
#define USAGE "Usage: %s [OPTION] RESOURCE\n"
int main(int argc, char * const argv[])
{
struct option options[] = {
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{0, 0, 0, 0}
};
switch(getopt_long(argc, argv, "hv", options, NULL)) {
case 'h':
printf(USAGE
"Get the value of the X resource named RESOURCE\n"
"\n"
"Options:\n"
" -h, --help Prints this help message\n"
" -v, --version Prints the version\n",
argv[0]);
return 0;
case 'v':
printf("xgetres " VERSION "\n");
return 0;
case -1:
if (2 == argc) {
return print_xresource(argv[1]);
}
default:
fprintf(stderr, USAGE
"Try '%s -h' for more information\n",
argv[0], argv[0]);
return -1;
}
}