hyprwayland-scanner/src/main.cpp

1068 lines
34 KiB
C++

#include <pugixml.hpp>
#include <iostream>
#include <string>
#include <fstream>
#include <format>
#include <vector>
#include <algorithm>
#include <tuple>
#include <filesystem>
bool waylandEnums = false;
bool clientCode = false;
bool noInterfaces = false;
struct SRequestArgument {
std::string wlType;
std::string interface;
std::string enumName;
std::string name;
bool newType = false;
bool allowNull = false;
};
struct SWaylandFunction {
std::vector<SRequestArgument> args;
std::string name;
std::string since;
std::string newIdType = ""; // client only
bool destructor = false;
};
struct SInterface {
std::vector<SWaylandFunction> requests;
std::vector<SWaylandFunction> events;
std::string name;
int version = 1;
};
struct SEnum {
std::string name;
std::string nameOriginal;
std::vector<std::pair<std::string, int>> values;
};
struct {
std::vector<SInterface> ifaces;
std::vector<SEnum> enums;
} XMLDATA;
const char* resourceName() {
return clientCode ? "wl_proxy" : "wl_resource";
}
std::string sanitize(const std::string& in) {
if (in == "namespace")
return "namespace_";
if (in == "class")
return "class_";
if (in == "delete")
return "delete_";
if (in == "new")
return "new_";
return in;
}
std::string argsToShort(std::vector<SRequestArgument>& args, const std::string& since) {
std::string shortt = since;
for (auto& a : args) {
if (a.wlType == "int")
shortt += "i";
else if (a.wlType == "new_id") {
if (a.interface.empty())
shortt += "su";
shortt += "n";
} else if (a.wlType == "uint")
shortt += "u";
else if (a.wlType == "fixed")
shortt += "f";
else if (a.wlType == "string")
shortt += std::string(a.allowNull ? "?s" : "s");
else if (a.wlType == "object")
shortt += std::string(a.allowNull ? "?" : "") + "o";
else if (a.wlType == "array")
shortt += "a";
else if (a.wlType == "fd")
shortt += "h";
else
throw std::runtime_error("Unknown arg in argsToShort");
}
return shortt;
}
std::string camelize(std::string snake) {
std::string result = "";
for (size_t i = 0; i < snake.length(); ++i) {
if (snake[i] == '_' && i != 0 && i + 1 < snake.length() && snake[i + 1] != '_') {
result += ::toupper(snake[i + 1]);
i++;
continue;
}
result += snake[i];
}
return result;
}
std::string WPTypeToCType(const SRequestArgument& arg, bool event /* events pass iface ptrs, requests ids */, bool ignoreTypes = false /* for dangerous */) {
if (arg.wlType == "uint" || arg.wlType == "new_id") {
if (arg.enumName.empty() && arg.interface.empty())
return "uint32_t";
// enum
if (!arg.enumName.empty()) {
for (auto& e : XMLDATA.enums) {
if (e.nameOriginal == arg.enumName)
return e.name;
}
return "uint32_t";
}
if (!event && clientCode && arg.wlType == "new_id")
return "wl_proxy*";
// iface
if (!arg.interface.empty() && event) {
for (auto& i : XMLDATA.ifaces) {
if (i.name == arg.interface)
return camelize((clientCode ? "CC_" : "C_") + arg.interface + "*");
}
return std::string{resourceName()} + "*";
}
return "uint32_t";
}
if (arg.wlType == "object") {
if (!arg.interface.empty() && event && !ignoreTypes) {
for (auto& i : XMLDATA.ifaces) {
if (i.name == arg.interface)
return camelize((clientCode ? "CC_" : "C_") + arg.interface + "*");
}
}
return std::string{resourceName()} + "*";
}
if (arg.wlType == "int" || arg.wlType == "fd")
return "int32_t";
if (arg.wlType == "fixed")
return "wl_fixed_t";
if (arg.wlType == "array")
return "wl_array*";
if (arg.wlType == "string")
return "const char*";
throw std::runtime_error("unknown wp type");
return "";
}
std::string HEADER;
std::string SOURCE;
struct {
std::string name;
std::string nameOriginal;
std::string fileName;
} PROTO_DATA;
void parseXML(pugi::xml_document& doc) {
for (auto& ge : doc.child("protocol").children("enum")) {
SEnum enum_;
enum_.nameOriginal = ge.attribute("name").as_string();
enum_.name = waylandEnums ? "enum " + PROTO_DATA.name + "_" + enum_.nameOriginal : camelize(PROTO_DATA.name + "_" + enum_.nameOriginal);
for (auto& entry : ge.children("entry")) {
auto VALUENAME = enum_.nameOriginal + "_" + entry.attribute("name").as_string();
std::transform(VALUENAME.begin(), VALUENAME.end(), VALUENAME.begin(), ::toupper);
enum_.values.emplace_back(std::make_pair<>(VALUENAME, entry.attribute("value").as_int()));
}
XMLDATA.enums.push_back(enum_);
}
for (auto& iface : doc.child("protocol").children("interface")) {
SInterface ifc;
ifc.name = iface.attribute("name").as_string();
ifc.version = iface.attribute("version").as_int();
for (auto& en : iface.children("enum")) {
SEnum enum_;
enum_.nameOriginal = en.attribute("name").as_string();
enum_.name = waylandEnums ? "enum " + ifc.name + "_" + enum_.nameOriginal : camelize(ifc.name + "_" + enum_.nameOriginal);
for (auto& entry : en.children("entry")) {
auto VALUENAME = ifc.name + "_" + enum_.nameOriginal + "_" + entry.attribute("name").as_string();
std::transform(VALUENAME.begin(), VALUENAME.end(), VALUENAME.begin(), ::toupper);
enum_.values.emplace_back(std::make_pair<>(VALUENAME, entry.attribute("value").as_int()));
}
XMLDATA.enums.push_back(enum_);
}
for (auto& rq : iface.children("request")) {
SWaylandFunction srq;
srq.name = rq.attribute("name").as_string();
srq.since = rq.attribute("since").as_string();
srq.destructor = rq.attribute("type").as_string() == std::string{"destructor"};
for (auto& arg : rq.children("arg")) {
SRequestArgument sargm;
if (arg.attribute("type").as_string() == std::string{"new_id"} && clientCode)
srq.newIdType = arg.attribute("interface").as_string();
sargm.newType = arg.attribute("type").as_string() == std::string{"new_id"} && clientCode;
sargm.name = sanitize(arg.attribute("name").as_string());
sargm.wlType = arg.attribute("type").as_string();
sargm.interface = arg.attribute("interface").as_string();
sargm.enumName = arg.attribute("enum").as_string();
sargm.allowNull = arg.attribute("allow-null").as_string() == std::string{"true"};
srq.args.push_back(sargm);
}
ifc.requests.push_back(srq);
}
for (auto& ev : iface.children("event")) {
SWaylandFunction sev;
sev.name = ev.attribute("name").as_string();
sev.since = ev.attribute("since").as_string();
sev.destructor = ev.attribute("type").as_string() == std::string{"destructor"};
for (auto& arg : ev.children("arg")) {
SRequestArgument sargm;
sargm.name = sanitize(arg.attribute("name").as_string());
sargm.interface = arg.attribute("interface").as_string();
sargm.wlType = arg.attribute("type").as_string();
sargm.enumName = arg.attribute("enum").as_string();
sargm.allowNull = arg.attribute("allow-null").as_string() == std::string{"true"};
sev.args.push_back(sargm);
}
ifc.events.push_back(sev);
}
XMLDATA.ifaces.push_back(ifc);
}
}
void parseHeader() {
// add some boilerplate
HEADER +=
std::format(R"#(#pragma once
#include <functional>
#include <cstdint>
#include <string>
{}
#define F std::function
{}
)#",
(clientCode ? "#include <wayland-client.h>" : "#include <wayland-server.h>"), (clientCode ? "struct wl_proxy;" : "struct wl_client;\nstruct wl_resource;"));
// parse all enums
if (!waylandEnums) {
for (auto& en : XMLDATA.enums) {
HEADER += std::format("enum {} : uint32_t {{\n", en.name);
for (auto& [k, v] : en.values) {
HEADER += std::format(" {} = {},\n", k, v);
}
HEADER += "};\n\n";
}
}
// fw declare all classes
for (auto& iface : XMLDATA.ifaces) {
const auto IFACE_CLASS_NAME_CAMEL = camelize((clientCode ? "CC_" : "C_") + iface.name);
HEADER += std::format("\nclass {};", IFACE_CLASS_NAME_CAMEL);
for (auto& rq : iface.requests) {
for (auto& arg : rq.args) {
if (!arg.interface.empty()) {
HEADER += std::format("\nclass {};", camelize((clientCode ? "CC_" : "C_") + arg.interface));
}
}
}
for (auto& rq : iface.events) {
for (auto& arg : rq.args) {
if (!arg.interface.empty()) {
HEADER += std::format("\nclass {};", camelize((clientCode ? "CC_" : "C_") + arg.interface));
}
}
}
}
HEADER += "\n\n#ifndef HYPRWAYLAND_SCANNER_NO_INTERFACES\n";
for (auto& iface : XMLDATA.ifaces) {
const auto IFACE_WL_NAME = iface.name + "_interface";
const auto IFACE_WL_NAME_CAMEL = camelize(iface.name + "_interface");
HEADER += std::format("extern const wl_interface {};\n", IFACE_WL_NAME, IFACE_WL_NAME_CAMEL, IFACE_WL_NAME);
}
HEADER += "\n#endif\n";
for (auto& iface : XMLDATA.ifaces) {
const auto IFACE_NAME_CAMEL = camelize(iface.name);
const auto IFACE_CLASS_NAME_CAMEL = camelize((clientCode ? "CC_" : "C_") + iface.name);
if (!clientCode) {
HEADER += std::format(R"#(
struct {}DestroyWrapper {{
wl_listener listener;
{}* parent = nullptr;
}};
)#",
IFACE_CLASS_NAME_CAMEL, IFACE_CLASS_NAME_CAMEL);
}
// begin the class
HEADER +=
std::format(R"#(
class {} {{
public:
{}({});
~{}();
)#",
IFACE_CLASS_NAME_CAMEL, IFACE_CLASS_NAME_CAMEL, (clientCode ? "wl_proxy*" : "wl_client* client, uint32_t version, uint32_t id"), IFACE_CLASS_NAME_CAMEL);
if (!clientCode) {
HEADER += std::format(R"#(
// set a listener for when this resource is _being_ destroyed
void setOnDestroy(F<void({}*)> handler) {{
onDestroy = handler;
}}
// set the data for this resource
void setData(void* data) {{
pData = data;
}}
// get the data for this resource
void* data() {{
return pData;
}}
// get the raw wl_resource ptr
wl_resource* resource() {{
return pResource;
}}
// get the client
wl_client* client() {{
return wl_resource_get_client(pResource);
}}
// send an error
void error(uint32_t error, const std::string& message) {{
wl_resource_post_error(pResource, error, "%s", message.c_str());
}}
// send out of memory
void noMemory() {{
wl_resource_post_no_memory(pResource);
}}
// get the resource version
int version() {{
return wl_resource_get_version(pResource);
}}
)#",
IFACE_CLASS_NAME_CAMEL);
} else {
HEADER += R"#(
// set the data for this resource
void setData(void* data) {{
pData = data;
}}
// get the data for this resource
void* data() {{
return pData;
}}
// get the raw wl_resource (wl_proxy) ptr
wl_proxy* resource() {{
return pResource;
}}
// get the raw wl_proxy ptr
wl_proxy* proxy() {{
return pResource;
}}
// get the resource version
int version() {{
return wl_proxy_get_version(pResource);
}}
)#";
}
// add all setters for requests
HEADER += "\n // --------------- Requests --------------- //\n\n";
for (auto& rq : (clientCode ? iface.events : iface.requests)) {
std::string args = ", ";
for (auto& arg : rq.args) {
if (arg.newType)
continue;
args += WPTypeToCType(arg, false) + ", ";
}
args.pop_back();
args.pop_back();
HEADER += std::format(" void {}(F<void({}*{})> handler);\n", camelize("set_" + rq.name), IFACE_CLASS_NAME_CAMEL, args);
}
// start events
HEADER += "\n // --------------- Events --------------- //\n\n";
for (auto& ev : (!clientCode ? iface.events : iface.requests)) {
std::string args = "";
for (auto& arg : ev.args) {
if (arg.newType)
continue;
args += WPTypeToCType(arg, true) + ", ";
}
if (!args.empty()) {
args.pop_back();
args.pop_back();
}
HEADER += std::format(" {} {}({});\n", ev.newIdType.empty() ? "void" : "wl_proxy*", camelize("send_" + ev.name), args);
}
// dangerous ones
if (!clientCode) {
for (auto& ev : (!clientCode ? iface.events : iface.requests)) {
std::string args = "";
for (auto& arg : ev.args) {
if (arg.newType)
continue;
args += WPTypeToCType(arg, true, true) + ", ";
}
if (!args.empty()) {
args.pop_back();
args.pop_back();
}
HEADER += std::format(" void {}({});\n", camelize("send_" + ev.name + "_raw"), args);
}
}
// end events
// start private section
HEADER += "\n private:\n";
// start requests storage
HEADER += " struct {\n";
for (auto& rq : (clientCode ? iface.events : iface.requests)) {
std::string args = ", ";
for (auto& arg : rq.args) {
if (arg.newType)
continue;
args += WPTypeToCType(arg, false) + ", ";
}
if (!args.empty()) {
args.pop_back();
args.pop_back();
}
HEADER += std::format(" F<void({}*{})> {};\n", IFACE_CLASS_NAME_CAMEL, args, camelize(rq.name));
}
// end requests storage
HEADER += " } requests;\n";
// constant resource stuff
if (!clientCode) {
HEADER += std::format(R"#(
void onDestroyCalled();
F<void({}*)> onDestroy;
wl_resource* pResource = nullptr;
{}DestroyWrapper resourceDestroyListener;
void* pData = nullptr;)#",
IFACE_CLASS_NAME_CAMEL, IFACE_CLASS_NAME_CAMEL);
} else {
HEADER += R"#(
wl_proxy* pResource = nullptr;
bool destroyed = false;
void* pData = nullptr;)#";
}
HEADER += "\n};\n\n";
}
HEADER += "\n\n#undef F\n";
}
void parseSource() {
SOURCE += std::format(R"#(#define private public
#define HYPRWAYLAND_SCANNER_NO_INTERFACES
#include "{}.hpp"
#undef private
#define F std::function
)#",
PROTO_DATA.fileName);
// reference interfaces
// dummy
SOURCE += R"#(
static const wl_interface* dummyTypes[] = { nullptr };
)#";
SOURCE += R"#(
// Reference all other interfaces.
// The reason why this is in snake is to
// be able to cooperate with existing
// wayland_scanner interfaces (they are interop)
)#";
std::vector<std::string> declaredIfaces;
for (auto& iface : XMLDATA.ifaces) {
const auto IFACE_WL_NAME = iface.name + "_interface";
const auto IFACE_WL_NAME_CAMEL = camelize(iface.name + "_interface");
declaredIfaces.push_back(IFACE_WL_NAME);
SOURCE += std::format("extern const wl_interface {};\n", IFACE_WL_NAME, IFACE_WL_NAME_CAMEL, IFACE_WL_NAME);
}
for (auto& iface : XMLDATA.ifaces) {
// do all referenced too
for (auto& rq : iface.requests) {
for (auto& arg : rq.args) {
if (arg.interface.empty())
continue;
const auto IFACE_WL_NAME2 = arg.interface + "_interface";
const auto IFACE_WL_NAME_CAMEL2 = camelize(arg.interface + "_interface");
if (std::find(declaredIfaces.begin(), declaredIfaces.end(), IFACE_WL_NAME2) == declaredIfaces.end()) {
SOURCE += std::format("extern const wl_interface {};\n", IFACE_WL_NAME2, IFACE_WL_NAME_CAMEL2, IFACE_WL_NAME2);
declaredIfaces.push_back(IFACE_WL_NAME2);
}
}
}
for (auto& ev : iface.events) {
for (auto& arg : ev.args) {
if (arg.interface.empty())
continue;
const auto IFACE_WL_NAME2 = arg.interface + "_interface";
const auto IFACE_WL_NAME_CAMEL2 = camelize(arg.interface + "_interface");
if (std::find(declaredIfaces.begin(), declaredIfaces.end(), IFACE_WL_NAME2) == declaredIfaces.end()) {
SOURCE += std::format("extern const wl_interface {};\n", IFACE_WL_NAME2, IFACE_WL_NAME_CAMEL2, IFACE_WL_NAME2);
declaredIfaces.push_back(IFACE_WL_NAME2);
}
}
}
}
// declare ifaces
for (auto& iface : XMLDATA.ifaces) {
const auto IFACE_WL_NAME = iface.name + "_interface";
const auto IFACE_NAME = iface.name;
const auto IFACE_NAME_CAMEL = camelize(iface.name);
const auto IFACE_CLASS_NAME_CAMEL = camelize((clientCode ? "CC_" : "C_") + iface.name);
// create handlers
for (auto& rq : (clientCode ? iface.events : iface.requests)) {
const auto REQUEST_NAME = camelize(std::string{"_"} + "C_" + IFACE_NAME + "_" + rq.name);
std::string argsC = ", ";
for (auto& arg : rq.args) {
if (arg.newType)
continue;
argsC += WPTypeToCType(arg, false) + " " + arg.name + ", ";
}
argsC.pop_back();
argsC.pop_back();
std::string argsN = ", ";
for (auto& arg : rq.args) {
argsN += arg.name + ", ";
}
if (!argsN.empty()) {
argsN.pop_back();
argsN.pop_back();
}
if (!clientCode) {
SOURCE += std::format(R"#(
static void {}(wl_client* client, wl_resource* resource{}) {{
const auto PO = ({}*)wl_resource_get_user_data(resource);
if (PO && PO->requests.{})
PO->requests.{}(PO{});
}}
)#",
REQUEST_NAME, argsC, IFACE_CLASS_NAME_CAMEL, camelize(rq.name), camelize(rq.name), argsN);
} else {
SOURCE += std::format(R"#(
static void {}(void* data, void* resource{}) {{
const auto PO = ({}*)data;
if (PO && PO->requests.{})
PO->requests.{}(PO{});
}}
)#",
REQUEST_NAME, argsC, IFACE_CLASS_NAME_CAMEL, camelize(rq.name), camelize(rq.name), argsN);
}
}
// destroy handler
if (!clientCode) {
SOURCE += std::format(R"#(
static void _{}__DestroyListener(wl_listener* l, void* d) {{
{}DestroyWrapper *wrap = wl_container_of(l, wrap, listener);
{}* pResource = wrap->parent;
pResource->onDestroyCalled();
}}
)#",
IFACE_CLASS_NAME_CAMEL, IFACE_CLASS_NAME_CAMEL, IFACE_CLASS_NAME_CAMEL);
}
// create vtable
const auto IFACE_VTABLE_NAME = "_" + IFACE_CLASS_NAME_CAMEL + "VTable";
SOURCE += std::format(R"#(
static const void* {}[] = {{
)#",
IFACE_VTABLE_NAME);
for (auto& rq : (clientCode ? iface.events : iface.requests)) {
const auto REQUEST_NAME = camelize(std::string{"_"} + "C_" + IFACE_NAME + "_" + rq.name);
SOURCE += std::format(" (void*){},\n", REQUEST_NAME);
}
if ((clientCode ? iface.events : iface.requests).empty()) {
SOURCE += " nullptr,\n";
}
SOURCE += "};\n";
// create events
int evid = 0;
for (auto& ev : (!clientCode ? iface.events : iface.requests)) {
const auto EVENT_NAME = camelize("send_" + ev.name);
std::string argsC = "";
for (auto& arg : ev.args) {
if (arg.newType)
continue;
argsC += WPTypeToCType(arg, true) + " " + arg.name + ", ";
}
if (!argsC.empty()) {
argsC.pop_back();
argsC.pop_back();
}
std::string argsN = ", ";
for (auto& arg : ev.args) {
if (arg.newType)
argsN += "nullptr, ";
else if (!WPTypeToCType(arg, true).starts_with("C"))
argsN += arg.name + ", ";
else
argsN += (arg.name + " ? " + arg.name + "->pResource : nullptr, ");
}
argsN.pop_back();
argsN.pop_back();
if (!clientCode) {
SOURCE += std::format(R"#(
void {}::{}({}) {{
if (!pResource)
return;
wl_resource_post_event(pResource, {}{});
}}
)#",
IFACE_CLASS_NAME_CAMEL, EVENT_NAME, argsC, evid, argsN);
} else {
std::string retType = ev.newIdType.empty() ? "void" : "wl_proxy";
std::string ptrRetType = ev.newIdType.empty() ? "void" : "wl_proxy*";
std::string flags = ev.destructor ? "1" : "0";
SOURCE += std::format(R"#(
{} {}::{}({}) {{
if (!pResource)
return{};{}
auto proxy = wl_proxy_marshal_flags(pResource, {}, {}, wl_proxy_get_version(pResource), {}{});{}
}}
)#",
ptrRetType, IFACE_CLASS_NAME_CAMEL, EVENT_NAME, argsC, (ev.newIdType.empty() ? "" : " nullptr"),
(ev.destructor ? "\n destroyed = true;" : ""), evid, (ev.newIdType.empty() ? "nullptr" : "&" + ev.newIdType + "_interface"), flags, argsN,
(ev.newIdType.empty() ? "\n proxy;" : "\n\n return proxy;"));
}
evid++;
}
// dangerous
if (!clientCode) {
evid = 0;
for (auto& ev : iface.events) {
const auto EVENT_NAME = camelize("send_" + ev.name + "_raw");
std::string argsC = "";
for (auto& arg : ev.args) {
if (arg.newType)
continue;
argsC += WPTypeToCType(arg, true, true) + " " + arg.name + ", ";
}
if (!argsC.empty()) {
argsC.pop_back();
argsC.pop_back();
}
std::string argsN = ", ";
for (auto& arg : ev.args) {
if (arg.newType)
continue;
argsN += arg.name + ", ";
}
argsN.pop_back();
argsN.pop_back();
SOURCE += std::format(R"#(
void {}::{}({}) {{
if (!pResource)
return;
wl_resource_post_event(pResource, {}{});
}}
)#",
IFACE_CLASS_NAME_CAMEL, EVENT_NAME, argsC, evid, argsN);
evid++;
}
}
// wayland interfaces and stuff
// type tables
for (auto& rq : iface.requests) {
if (rq.args.empty())
continue;
const auto TYPE_TABLE_NAME = camelize(std::string{"_"} + "C_" + IFACE_NAME + "_" + rq.name + "_types");
SOURCE += std::format("static const wl_interface* {}[] = {{\n", TYPE_TABLE_NAME);
for (auto& arg : rq.args) {
if (arg.interface.empty()) {
SOURCE += " nullptr,\n";
continue;
}
SOURCE += std::format(" &{}_interface,\n", arg.interface);
}
SOURCE += "};\n";
}
for (auto& ev : iface.events) {
if (ev.args.empty())
continue;
const auto TYPE_TABLE_NAME = camelize(std::string{"_"} + "C_" + IFACE_NAME + "_" + ev.name + "_types");
SOURCE += std::format("static const wl_interface* {}[] = {{\n", TYPE_TABLE_NAME);
for (auto& arg : ev.args) {
if (arg.interface.empty()) {
SOURCE += " nullptr,\n";
continue;
}
SOURCE += std::format(" &{}_interface,\n", arg.interface);
}
SOURCE += "};\n";
}
const auto MESSAGE_NAME_REQUESTS = camelize(std::string{"_"} + "C_" + IFACE_NAME + "_requests");
const auto MESSAGE_NAME_EVENTS = camelize(std::string{"_"} + "C_" + IFACE_NAME + "_events");
// message
if (!noInterfaces) {
if (iface.requests.size() > 0) {
SOURCE += std::format(R"#(
static const wl_message {}[] = {{
)#",
MESSAGE_NAME_REQUESTS);
for (auto& rq : iface.requests) {
// create type table
const auto TYPE_TABLE_NAME = camelize(std::string{"_"} + "C_" + IFACE_NAME + "_" + rq.name + "_types");
SOURCE += std::format(" {{ .name = \"{}\", .signature = \"{}\", .types = {}}},\n", rq.name, argsToShort(rq.args, rq.since),
rq.args.empty() ? "dummyTypes + 0" : TYPE_TABLE_NAME + " + 0");
}
SOURCE += "};\n";
}
if (iface.events.size() > 0) {
SOURCE += std::format(R"#(
static const wl_message {}[] = {{
)#",
MESSAGE_NAME_EVENTS);
for (auto& ev : iface.events) {
// create type table
const auto TYPE_TABLE_NAME = camelize(std::string{"_"} + "C_" + IFACE_NAME + "_" + ev.name + "_types");
SOURCE += std::format(" {{ .name = \"{}\", .signature = \"{}\", .types = {}}},\n", ev.name, argsToShort(ev.args, ev.since),
ev.args.empty() ? "dummyTypes + 0" : TYPE_TABLE_NAME + " + 0");
}
SOURCE += "};\n";
}
// iface
SOURCE += std::format(R"#(
const wl_interface {} = {{
.name = "{}", .version = {},
.method_count = {}, .methods = {},
.event_count = {}, .events = {},
}};
)#",
IFACE_WL_NAME, iface.name, iface.version, iface.requests.size(), (iface.requests.size() > 0 ? MESSAGE_NAME_REQUESTS : "nullptr"),
iface.events.size(), (iface.events.size() > 0 ? MESSAGE_NAME_EVENTS : "nullptr"));
}
// protocol body
if (!clientCode) {
SOURCE += std::format(R"#(
{}::{}(wl_client* client, uint32_t version, uint32_t id) :
pResource(wl_resource_create(client, &{}, version, id)) {{
if (!pResource)
return;
wl_resource_set_user_data(pResource, this);
wl_list_init(&resourceDestroyListener.listener.link);
resourceDestroyListener.listener.notify = _{}__DestroyListener;
resourceDestroyListener.parent = this;
wl_resource_add_destroy_listener(pResource, &resourceDestroyListener.listener);
wl_resource_set_implementation(pResource, {}, this, nullptr);
}}
{}::~{}() {{
wl_list_remove(&resourceDestroyListener.listener.link);
wl_list_init(&resourceDestroyListener.listener.link);
// if we still own the wayland resource,
// it means we need to destroy it.
if (pResource && wl_resource_get_user_data(pResource) == this) {{
wl_resource_set_user_data(pResource, nullptr);
wl_resource_destroy(pResource);
}}
}}
void {}::onDestroyCalled() {{
wl_resource_set_user_data(pResource, nullptr);
wl_list_remove(&resourceDestroyListener.listener.link);
wl_list_init(&resourceDestroyListener.listener.link);
// set the resource to nullptr,
// as it will be freed. If the consumer does not destroy this resource
// in onDestroy here, we'd be doing a UAF in the ~dtor
pResource = nullptr;
if (onDestroy)
onDestroy(this);
}}
)#",
IFACE_CLASS_NAME_CAMEL, IFACE_CLASS_NAME_CAMEL, IFACE_NAME + "_interface", IFACE_CLASS_NAME_CAMEL, IFACE_VTABLE_NAME, IFACE_CLASS_NAME_CAMEL,
IFACE_CLASS_NAME_CAMEL, IFACE_CLASS_NAME_CAMEL);
} else {
std::string DTOR_FUNC = "";
for (auto& rq : iface.requests) {
if (!rq.destructor)
continue;
DTOR_FUNC = camelize("send_" + rq.name) + "()";
break;
}
if (DTOR_FUNC.empty())
DTOR_FUNC = "wl_proxy_destroy(pResource)";
SOURCE += std::format(R"#(
{}::{}(wl_proxy* resource) : pResource(resource) {{
if (!pResource)
return;
wl_proxy_add_listener(pResource, (void (**)(void))&{}, this);
}}
{}::~{}() {{
if (!destroyed)
{};
}}
)#",
IFACE_CLASS_NAME_CAMEL, IFACE_CLASS_NAME_CAMEL, IFACE_VTABLE_NAME, IFACE_CLASS_NAME_CAMEL, IFACE_CLASS_NAME_CAMEL, DTOR_FUNC);
}
for (auto& rq : (clientCode ? iface.events : iface.requests)) {
std::string args = ", ";
for (auto& arg : rq.args) {
args += WPTypeToCType(arg, false) + ", ";
}
args.pop_back();
args.pop_back();
SOURCE += std::format(R"#(
void {}::{}(F<void({}*{})> handler) {{
requests.{} = handler;
}}
)#",
IFACE_CLASS_NAME_CAMEL, camelize("set_" + rq.name), IFACE_CLASS_NAME_CAMEL, args, camelize(rq.name));
}
}
SOURCE += "\n#undef F\n";
}
int main(int argc, char** argv, char** envp) {
std::string outpath = "";
std::string protopath = "";
int pathsTaken = 0;
for (int i = 1; i < argc; ++i) {
std::string curarg = argv[i];
if (curarg == "-v" || curarg == "--version") {
std::cout << SCANNER_VERSION << "\n";
return 0;
}
if (curarg == "-c" || curarg == "--client") {
clientCode = true;
continue;
}
if (curarg == "--no-interfaces") {
noInterfaces = true;
continue;
}
if (curarg == "--wayland-enums") {
waylandEnums = true;
continue;
}
if (pathsTaken == 0) {
protopath = curarg;
pathsTaken++;
continue;
} else if (pathsTaken == 1) {
outpath = curarg;
pathsTaken++;
continue;
}
std::cout << "Too many args or unknown arg " << curarg << "\n";
return 1;
}
if (outpath.empty() || protopath.empty()) {
std::cerr << "Not enough args\n";
return 1;
}
// build!
pugi::xml_document doc;
if (!doc.load_file(protopath.c_str())) {
std::cerr << "Couldn't load proto\n";
return 1;
}
PROTO_DATA.nameOriginal = doc.child("protocol").attribute("name").as_string();
PROTO_DATA.name = camelize(PROTO_DATA.nameOriginal);
PROTO_DATA.fileName = protopath.substr(protopath.find_last_of('/') + 1, protopath.length() - (protopath.find_last_of('/') + 1) - 4);
const auto COPYRIGHT =
std::format("// Generated with hyprwayland-scanner {}. Made with vaxry's keyboard and ❤️.\n// {}\n\n/*\n This protocol's authors' copyright notice is:\n\n{}\n*/\n\n",
SCANNER_VERSION, PROTO_DATA.nameOriginal, std::string{doc.child("protocol").child("copyright").child_value()});
parseXML(doc);
parseHeader();
parseSource();
const auto HPATH = outpath + "/" + PROTO_DATA.fileName + ".hpp";
const auto CPATH = outpath + "/" + PROTO_DATA.fileName + ".cpp";
bool needsToWriteHeader = true, needsToWriteSource = true;
if (std::filesystem::exists(HPATH)) {
// check if we need to overwrite
std::ifstream headerIn(HPATH);
std::string content((std::istreambuf_iterator<char>(headerIn)), (std::istreambuf_iterator<char>()));
if (content == COPYRIGHT + HEADER)
needsToWriteHeader = false;
headerIn.close();
}
if (std::filesystem::exists(CPATH)) {
// check if we need to overwrite
std::ifstream sourceIn(CPATH);
std::string content((std::istreambuf_iterator<char>(sourceIn)), (std::istreambuf_iterator<char>()));
if (content == COPYRIGHT + SOURCE)
needsToWriteSource = false;
sourceIn.close();
}
if (needsToWriteHeader) {
std::ofstream header(HPATH, std::ios::trunc);
header << COPYRIGHT << HEADER;
header.close();
}
if (needsToWriteSource) {
std::ofstream source(CPATH, std::ios::trunc);
source << COPYRIGHT << SOURCE;
source.close();
}
return 0;
}