79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/*
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* xrdb.c - X Resources DataBase communication functions
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*
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* Copyright © 2015 Yauhen Kirylau <yawghen@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include "xrdb.h"
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#include "globalconf.h"
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#include <X11/Xresource.h>
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#include <string.h>
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/* \brief open X display and X Resources DB
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*/
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static void xrdb_init(void) {
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XrmInitialize(); // @TODO: it works without it but in docs it's said what it's
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// needed
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if (!(globalconf.xrmdb = XrmGetDatabase(globalconf.display))) {
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/* taken from xpbiff: */
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/* >> what a hack; need to initialize dpy->db */
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(void)XGetDefault(globalconf.display, "", "");
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/**/
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if (!(globalconf.xrmdb = XrmGetDatabase(globalconf.display)))
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warn("Cannot open xrdb.");
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}
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}
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/* \brief get value from X Resources DataBase
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* \param L The Lua VM state.
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* \return The number of elements pushed on stack.
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* \luastack
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* \lparam string xrdb class, ie "URxvt" or ""
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* \lparam string xrdb name, ie "background" or "color0"
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* \lreturn string xrdb value or nil if not exists. \
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*/
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int luaA_xrdb_get_value(lua_State *L) {
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if (!globalconf.xrmdb)
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xrdb_init();
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char *resource_type;
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int resource_code;
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XrmValue resource_value;
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const char *resource_class = luaL_checkstring(L, 1);
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const char *resource_name = luaL_checkstring(L, 2);
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resource_code = XrmGetResource(globalconf.xrmdb, resource_name, resource_class,
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&resource_type, &resource_value);
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if (resource_code && (strcmp(resource_type, "String") == 0)) {
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lua_pushstring(L, (char *)resource_value.addr);
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} else {
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if (strlen(resource_class))
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luaA_warn(L, "Failed to get xrdb value '%s' (class '%s').", resource_name, resource_class);
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else
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luaA_warn(L, "Failed to get xrdb value '%s'.", resource_name);
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lua_pushnil(L);
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}
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return 1;
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}
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// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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