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691 lines
16 KiB
691 lines
16 KiB
/*
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* Copyright © 2010 Intel Corporation
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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
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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#include <expat.h>
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#include "wayland-util.h"
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static const char copyright[] =
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"/*\n"
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" * Copyright © 2010 Kristian Høgsberg\n"
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" *\n"
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" * Permission to use, copy, modify, distribute, and sell this software and its\n"
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" * documentation for any purpose is hereby granted without fee, provided that\n"
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" * the above copyright notice appear in all copies and that both that copyright\n"
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" * notice and this permission notice appear in supporting documentation, and\n"
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" * that the name of the copyright holders not be used in advertising or\n"
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" * publicity pertaining to distribution of the software without specific,\n"
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" * written prior permission. The copyright holders make no representations\n"
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" * about the suitability of this software for any purpose. It is provided \"as\n"
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" * is\" without express or implied warranty.\n"
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" *\n"
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" * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,\n"
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" * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO\n"
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" * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR\n"
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" * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,\n"
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" * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER\n"
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" * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE\n"
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" * OF THIS SOFTWARE.\n"
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" */\n";
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static int
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usage(int ret)
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{
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fprintf(stderr, "usage: ./scanner [header|code]\n");
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exit(ret);
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}
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#define XML_BUFFER_SIZE 4096
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struct protocol {
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char *name;
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char *uppercase_name;
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struct wl_list interface_list;
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};
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struct interface {
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char *name;
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char *uppercase_name;
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int version;
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struct wl_list request_list;
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struct wl_list event_list;
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struct wl_list link;
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};
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struct message {
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char *name;
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char *uppercase_name;
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struct wl_list arg_list;
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struct wl_list link;
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int destructor;
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};
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enum arg_type {
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NEW_ID,
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INT,
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UNSIGNED,
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STRING,
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OBJECT,
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ARRAY,
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FD
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};
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struct arg {
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char *name;
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enum arg_type type;
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char *interface_name;
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struct wl_list link;
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};
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struct parse_context {
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struct protocol *protocol;
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struct interface *interface;
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struct message *message;
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};
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static char *
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uppercase_dup(const char *src)
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{
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char *u;
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int i;
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u = strdup(src);
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for (i = 0; u[i]; i++)
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u[i] = toupper(u[i]);
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u[i] = '\0';
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return u;
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}
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static void
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start_element(void *data, const char *element_name, const char **atts)
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{
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struct parse_context *ctx = data;
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struct interface *interface;
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struct message *message;
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struct arg *arg;
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const char *name, *type, *interface_name;
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int i, version;
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name = NULL;
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type = NULL;
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version = 0;
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interface_name = NULL;
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for (i = 0; atts[i]; i += 2) {
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if (strcmp(atts[i], "name") == 0)
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name = atts[i + 1];
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if (strcmp(atts[i], "version") == 0)
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version = atoi(atts[i + 1]);
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if (strcmp(atts[i], "type") == 0)
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type = atts[i + 1];
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if (strcmp(atts[i], "interface") == 0)
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interface_name = atts[i + 1];
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}
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if (strcmp(element_name, "protocol") == 0) {
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if (name == NULL) {
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fprintf(stderr, "no protocol name given\n");
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exit(EXIT_FAILURE);
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}
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ctx->protocol->name = strdup(name);
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ctx->protocol->uppercase_name = uppercase_dup(name);
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} else if (strcmp(element_name, "interface") == 0) {
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if (name == NULL) {
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fprintf(stderr, "no interface name given\n");
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exit(EXIT_FAILURE);
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}
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if (version == 0) {
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fprintf(stderr, "no interface version given\n");
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exit(EXIT_FAILURE);
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}
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interface = malloc(sizeof *interface);
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interface->name = strdup(name);
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interface->uppercase_name = uppercase_dup(name);
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interface->version = version;
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wl_list_init(&interface->request_list);
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wl_list_init(&interface->event_list);
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wl_list_insert(ctx->protocol->interface_list.prev,
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&interface->link);
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ctx->interface = interface;
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} else if (strcmp(element_name, "request") == 0 ||
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strcmp(element_name, "event") == 0) {
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if (name == NULL) {
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fprintf(stderr, "no request name given\n");
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exit(EXIT_FAILURE);
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}
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message = malloc(sizeof *message);
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message->name = strdup(name);
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message->uppercase_name = uppercase_dup(name);
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wl_list_init(&message->arg_list);
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if (strcmp(element_name, "request") == 0)
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wl_list_insert(ctx->interface->request_list.prev,
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&message->link);
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else
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wl_list_insert(ctx->interface->event_list.prev,
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&message->link);
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if (type != NULL && strcmp(type, "destructor") == 0)
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message->destructor = 1;
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else
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message->destructor = 0;
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ctx->message = message;
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} else if (strcmp(element_name, "arg") == 0) {
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arg = malloc(sizeof *arg);
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arg->name = strdup(name);
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if (strcmp(type, "int") == 0)
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arg->type = INT;
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else if (strcmp(type, "uint") == 0)
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arg->type = UNSIGNED;
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else if (strcmp(type, "string") == 0)
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arg->type = STRING;
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else if (strcmp(type, "array") == 0)
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arg->type = ARRAY;
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else if (strcmp(type, "fd") == 0)
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arg->type = FD;
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else if (strcmp(type, "new_id") == 0) {
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if (interface_name == NULL) {
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fprintf(stderr, "no interface name given\n");
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exit(EXIT_FAILURE);
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}
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arg->type = NEW_ID;
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arg->interface_name = strdup(interface_name);
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} else if (strcmp(type, "object") == 0) {
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if (interface_name == NULL) {
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fprintf(stderr, "no interface name given\n");
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exit(EXIT_FAILURE);
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}
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arg->type = OBJECT;
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arg->interface_name = strdup(interface_name);
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} else {
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fprintf(stderr, "unknown type: %s\n", type);
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exit(EXIT_FAILURE);
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}
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wl_list_insert(ctx->message->arg_list.prev,
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&arg->link);
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}
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}
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static void
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emit_opcodes(struct wl_list *message_list, struct interface *interface)
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{
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struct message *m;
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int opcode;
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if (wl_list_empty(message_list))
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return;
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opcode = 0;
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wl_list_for_each(m, message_list, link)
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printf("#define WL_%s_%s\t%d\n",
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interface->uppercase_name, m->uppercase_name, opcode++);
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printf("\n");
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}
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static void
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emit_type(struct arg *a)
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{
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switch (a->type) {
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default:
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case INT:
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case FD:
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printf("int ");
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break;
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case NEW_ID:
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case UNSIGNED:
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printf("uint32_t ");
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break;
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case STRING:
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printf("const char *");
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break;
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case OBJECT:
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printf("struct wl_%s *", a->interface_name);
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break;
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case ARRAY:
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printf("struct wl_array *");
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break;
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}
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}
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static void
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emit_stubs(struct wl_list *message_list, struct interface *interface)
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{
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struct message *m;
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struct arg *a, *ret;
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int has_destructor, has_destroy;
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/* We provide a hand written constructor for the display object */
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if (strcmp(interface->name, "display") != 0)
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printf("static inline struct wl_%s *\n"
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"wl_%s_create(struct wl_display *display, uint32_t id)\n"
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"{\n"
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"\treturn (struct wl_%s *)\n"
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"\t\twl_proxy_create_for_id(display, &wl_%s_interface, id);\n"
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"}\n\n",
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interface->name,
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interface->name,
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interface->name,
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interface->name);
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printf("static inline void\n"
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"wl_%s_set_user_data(struct wl_%s *%s, void *user_data)\n"
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"{\n"
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"\twl_proxy_set_user_data((struct wl_proxy *) %s, user_data);\n"
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"}\n\n",
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interface->name, interface->name, interface->name,
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interface->name);
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printf("static inline void *\n"
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"wl_%s_get_user_data(struct wl_%s *%s)\n"
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"{\n"
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"\treturn wl_proxy_get_user_data((struct wl_proxy *) %s);\n"
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"}\n\n",
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interface->name, interface->name, interface->name,
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interface->name);
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has_destructor = 0;
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has_destroy = 0;
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wl_list_for_each(m, message_list, link) {
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if (m->destructor)
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has_destructor = 1;
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if (strcmp(m->name, "destroy)") == 0)
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has_destroy = 1;
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}
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if (!has_destructor && has_destroy) {
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fprintf(stderr,
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"interface %s has method named destroy but"
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"no destructor", interface->name);
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exit(EXIT_FAILURE);
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}
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/* And we have a hand-written display destructor */
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if (!has_destructor && strcmp(interface->name, "display") != 0)
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printf("static inline void\n"
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"wl_%s_destroy(struct wl_%s *%s)\n"
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"{\n"
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"\twl_proxy_destroy("
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"(struct wl_proxy *) %s);\n"
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"}\n\n",
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interface->name, interface->name, interface->name,
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interface->name);
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if (wl_list_empty(message_list))
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return;
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wl_list_for_each(m, message_list, link) {
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ret = NULL;
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wl_list_for_each(a, &m->arg_list, link) {
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if (a->type == NEW_ID)
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ret = a;
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}
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if (ret)
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printf("static inline struct wl_%s *\n",
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ret->interface_name);
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else
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printf("static inline void\n");
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printf("wl_%s_%s(struct wl_%s *%s",
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interface->name, m->name,
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interface->name, interface->name);
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wl_list_for_each(a, &m->arg_list, link) {
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if (a->type == NEW_ID)
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continue;
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printf(", ");
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emit_type(a);
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printf("%s", a->name);
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}
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printf(")\n"
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"{\n");
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if (ret)
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printf("\tstruct wl_proxy *%s;\n\n"
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"\t%s = wl_proxy_create("
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"(struct wl_proxy *) %s,\n"
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"\t\t\t &wl_%s_interface);\n"
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"\tif (!%s)\n"
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"\t\treturn NULL;\n\n",
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ret->name,
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ret->name,
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interface->name, ret->interface_name,
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ret->name);
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printf("\twl_proxy_marshal((struct wl_proxy *) %s,\n"
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"\t\t\t WL_%s_%s",
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interface->name,
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interface->uppercase_name,
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m->uppercase_name);
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wl_list_for_each(a, &m->arg_list, link) {
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printf(", ");
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printf("%s", a->name);
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}
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printf(");\n");
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if (m->destructor)
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printf("\n\twl_proxy_destroy("
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"(struct wl_proxy *) %s);\n",
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interface->name);
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if (ret)
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printf("\n\treturn (struct wl_%s *) %s;\n",
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ret->interface_name, ret->name);
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printf("}\n\n");
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}
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}
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static const char *indent(int n)
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{
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const char *whitespace[] = {
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"\t\t\t\t\t\t\t\t\t\t\t\t",
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"\t\t\t\t\t\t\t\t\t\t\t\t ",
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"\t\t\t\t\t\t\t\t\t\t\t\t ",
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"\t\t\t\t\t\t\t\t\t\t\t\t ",
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"\t\t\t\t\t\t\t\t\t\t\t\t ",
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"\t\t\t\t\t\t\t\t\t\t\t\t ",
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"\t\t\t\t\t\t\t\t\t\t\t\t ",
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"\t\t\t\t\t\t\t\t\t\t\t\t "
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};
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return whitespace[n % 8] + 12 - n / 8;
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}
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static void
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emit_structs(struct wl_list *message_list, struct interface *interface)
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{
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struct message *m;
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struct arg *a;
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int is_interface, n;
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if (wl_list_empty(message_list))
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return;
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is_interface = message_list == &interface->request_list;
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printf("struct wl_%s_%s {\n", interface->name,
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is_interface ? "interface" : "listener");
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wl_list_for_each(m, message_list, link) {
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printf("\tvoid (*%s)(", m->name);
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n = strlen(m->name) + 17;
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if (is_interface) {
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printf("struct wl_client *client,\n"
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"%sstruct wl_%s *%s",
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indent(n),
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interface->name, interface->name);
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} else {
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printf("void *data,\n"),
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printf("%sstruct wl_%s *%s",
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indent(n), interface->name, interface->name);
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}
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wl_list_for_each(a, &m->arg_list, link) {
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printf(",\n%s", indent(n));
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emit_type(a);
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printf("%s", a->name);
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}
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printf(");\n");
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}
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printf("};\n\n");
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if (!is_interface) {
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printf("static inline int\n"
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"wl_%s_add_listener(struct wl_%s *%s,\n"
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"%sconst struct wl_%s_listener *listener, void *data)\n"
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"{\n"
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"\treturn wl_proxy_add_listener((struct wl_proxy *) %s,\n"
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"%s(void (**)(void)) listener, data);\n"
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"}\n\n",
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interface->name, interface->name, interface->name,
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indent(17 + strlen(interface->name)),
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interface->name,
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interface->name,
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indent(37));
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}
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}
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static const char client_prototypes[] =
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"struct wl_proxy;\n\n"
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"extern void\n"
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"wl_proxy_marshal(struct wl_proxy *p, uint32_t opcode, ...);\n"
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|
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"extern struct wl_proxy *\n"
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"wl_proxy_create(struct wl_proxy *factory,\n"
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"\t\tconst struct wl_interface *interface);\n"
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|
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"extern struct wl_proxy *\n"
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"wl_proxy_create_for_id(struct wl_display *display,\n"
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"\t\t const struct wl_interface *interface, uint32_t id);\n"
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|
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"extern void\n"
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"wl_proxy_destroy(struct wl_proxy *proxy);\n\n"
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|
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"extern int\n"
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"wl_proxy_add_listener(struct wl_proxy *proxy,\n"
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"\t\t void (**implementation)(void), void *data);\n\n"
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|
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"extern void\n"
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"wl_proxy_set_user_data(struct wl_proxy *proxy, void *user_data);\n\n"
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|
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"extern void *\n"
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"wl_proxy_get_user_data(struct wl_proxy *proxy);\n\n";
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static void
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emit_header(struct protocol *protocol, int server)
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{
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struct interface *i;
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const char *s = server ? "SERVER" : "CLIENT";
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printf("%s\n\n"
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"#ifndef %s_%s_PROTOCOL_H\n"
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"#define %s_%s_PROTOCOL_H\n"
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"\n"
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"#ifdef __cplusplus\n"
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"extern \"C\" {\n"
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"#endif\n"
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"\n"
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"#include <stdint.h>\n"
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"#include \"wayland-util.h\"\n\n"
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|
"struct wl_client;\n\n",
|
|
copyright,
|
|
protocol->uppercase_name, s,
|
|
protocol->uppercase_name, s);
|
|
|
|
wl_list_for_each(i, &protocol->interface_list, link)
|
|
printf("struct wl_%s;\n", i->name);
|
|
printf("\n");
|
|
|
|
if (!server)
|
|
printf(client_prototypes);
|
|
|
|
wl_list_for_each(i, &protocol->interface_list, link) {
|
|
printf("extern const struct wl_interface "
|
|
"wl_%s_interface;\n",
|
|
i->name);
|
|
}
|
|
printf("\n");
|
|
|
|
wl_list_for_each(i, &protocol->interface_list, link) {
|
|
|
|
if (server) {
|
|
emit_structs(&i->request_list, i);
|
|
emit_opcodes(&i->event_list, i);
|
|
} else {
|
|
emit_structs(&i->event_list, i);
|
|
emit_opcodes(&i->request_list, i);
|
|
emit_stubs(&i->request_list, i);
|
|
}
|
|
}
|
|
|
|
printf("#ifdef __cplusplus\n"
|
|
"}\n"
|
|
"#endif\n"
|
|
"\n"
|
|
"#endif\n");
|
|
}
|
|
|
|
static void
|
|
emit_messages(struct wl_list *message_list,
|
|
struct interface *interface, const char *suffix)
|
|
{
|
|
struct message *m;
|
|
struct arg *a;
|
|
|
|
if (wl_list_empty(message_list))
|
|
return;
|
|
|
|
printf("static const struct wl_message "
|
|
"%s_%s[] = {\n",
|
|
interface->name, suffix);
|
|
|
|
wl_list_for_each(m, message_list, link) {
|
|
printf("\t{ \"%s\", \"", m->name);
|
|
wl_list_for_each(a, &m->arg_list, link) {
|
|
switch (a->type) {
|
|
default:
|
|
case INT:
|
|
printf("i");
|
|
break;
|
|
case NEW_ID:
|
|
printf("n");
|
|
break;
|
|
case UNSIGNED:
|
|
printf("u");
|
|
break;
|
|
case STRING:
|
|
printf("s");
|
|
break;
|
|
case OBJECT:
|
|
printf("o");
|
|
break;
|
|
case ARRAY:
|
|
printf("a");
|
|
break;
|
|
case FD:
|
|
printf("h");
|
|
break;
|
|
}
|
|
}
|
|
printf("\" },\n");
|
|
}
|
|
|
|
printf("};\n\n");
|
|
}
|
|
|
|
static void
|
|
emit_code(struct protocol *protocol)
|
|
{
|
|
struct interface *i;
|
|
|
|
printf("%s\n\n"
|
|
"#include <stdlib.h>\n"
|
|
"#include <stdint.h>\n"
|
|
"#include \"wayland-util.h\"\n\n",
|
|
copyright);
|
|
|
|
wl_list_for_each(i, &protocol->interface_list, link) {
|
|
|
|
emit_messages(&i->request_list, i, "requests");
|
|
emit_messages(&i->event_list, i, "events");
|
|
|
|
printf("WL_EXPORT const struct wl_interface "
|
|
"wl_%s_interface = {\n"
|
|
"\t\"%s\", %d,\n",
|
|
i->name, i->name, i->version);
|
|
|
|
if (!wl_list_empty(&i->request_list))
|
|
printf("\tARRAY_LENGTH(%s_requests), %s_requests,\n",
|
|
i->name, i->name);
|
|
else
|
|
printf("\t0, NULL,\n");
|
|
|
|
if (!wl_list_empty(&i->event_list))
|
|
printf("\tARRAY_LENGTH(%s_events), %s_events,\n",
|
|
i->name, i->name);
|
|
else
|
|
printf("\t0, NULL,\n");
|
|
|
|
printf("};\n\n");
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
struct parse_context ctx;
|
|
struct protocol protocol;
|
|
XML_Parser parser;
|
|
int len;
|
|
void *buf;
|
|
|
|
if (argc != 2)
|
|
usage(EXIT_FAILURE);
|
|
|
|
wl_list_init(&protocol.interface_list);
|
|
ctx.protocol = &protocol;
|
|
|
|
parser = XML_ParserCreate(NULL);
|
|
XML_SetUserData(parser, &ctx);
|
|
if (parser == NULL) {
|
|
fprintf(stderr, "failed to create parser\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
XML_SetElementHandler(parser, start_element, NULL);
|
|
do {
|
|
buf = XML_GetBuffer(parser, XML_BUFFER_SIZE);
|
|
len = fread(buf, 1, XML_BUFFER_SIZE, stdin);
|
|
if (len < 0) {
|
|
fprintf(stderr, "fread: %s\n", strerror(errno));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
XML_ParseBuffer(parser, len, len == 0);
|
|
|
|
} while (len > 0);
|
|
|
|
XML_ParserFree(parser);
|
|
|
|
if (strcmp(argv[1], "client-header") == 0) {
|
|
emit_header(&protocol, 0);
|
|
} else if (strcmp(argv[1], "server-header") == 0) {
|
|
emit_header(&protocol, 1);
|
|
} else if (strcmp(argv[1], "code") == 0) {
|
|
emit_code(&protocol);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|