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%{
/* Rely on vasprintf (GNU extension) instead of vsnprintf if
possible... */
#ifdef HAVE_VASPRINTF
#define _GNU_SOURCE
#include <stdio.h>
#endif
#include <xcb/xcb.h>
#include <stdlib.h>
#include <stdarg.h>
#include "xcb_atom.h"
%}
%readonly-tables
%pic
%null-strings
%enum
%includes
%compare-strncmp
%struct-type
struct atom_map { int name; xcb_atom_t value; };
%%
define(`COUNT', 0)dnl
define(`DO', `$1,define(`COUNT', incr(COUNT))COUNT')dnl
include(atomlist.m4)`'dnl
%%
static const char atom_names[] =
define(`DO', ` "$1\0"')dnl
include(atomlist.m4);
static const uint16_t atom_name_offsets[] = {
define(`OFFSET', 0)dnl
define(`DO', ` OFFSET,define(`OFFSET', eval(OFFSET+1+len($1)))')dnl
include(atomlist.m4)`'dnl
};
xcb_atom_t xcb_atom_get_predefined(uint16_t name_len, const char *name)
{
const struct atom_map *value = in_word_set(name, name_len);
xcb_atom_t ret = XCB_NONE;
if(value)
ret = value->value;
return ret;
}
const char *xcb_atom_get_name_predefined(xcb_atom_t atom)
{
if(atom <= 0 || atom > (sizeof(atom_name_offsets) / sizeof(*atom_name_offsets)))
return 0;
return atom_names + atom_name_offsets[atom - 1];
}
static char *makename(const char *fmt, ...)
{
char *ret;
int n;
va_list ap;
#ifndef HAVE_VASPRINTF
char *np;
int size = 64;
/* First allocate 'size' bytes, should be enough usually */
if((ret = malloc(size)) == NULL)
return NULL;
while(1)
{
va_start(ap, fmt);
n = vsnprintf(ret, size, fmt, ap);
va_end(ap);
if(n < 0)
return NULL;
if(n < size)
return ret;
size = n + 1;
if((np = realloc(ret, size)) == NULL)
{
free(ret);
return NULL;
}
ret = np;
}
#else
va_start(ap, fmt);
n = vasprintf(&ret, fmt, ap);
va_end(ap);
if(n < 0)
return NULL;
return ret;
#endif
}
char *xcb_atom_name_by_screen(const char *base, uint8_t screen)
{
return makename("%s_S%u", base, screen);
}
char *xcb_atom_name_by_resource(const char *base, uint32_t resource)
{
return makename("%s_R%08X", base, resource);
}
char *xcb_atom_name_unique(const char *base, uint32_t id)
{
if(base)
return makename("%s_U%lu", base, id);
else
return makename("U%lu", id);
}
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