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parses variables. Progress, I guess.
This commit is contained in:
Vaxry 2023-12-28 20:38:01 +01:00
parent 3e6a554bec
commit e15526ee91
12 changed files with 681 additions and 0 deletions
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---
Language: Cpp
BasedOnStyle: LLVM
AccessModifierOffset: -2
AlignAfterOpenBracket: Align
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AlignConsecutiveAssignments: true
AlignEscapedNewlines: Right
AlignOperands: false
AlignTrailingComments: true
AllowAllArgumentsOnNextLine: true
AllowAllConstructorInitializersOnNextLine: true
AllowAllParametersOfDeclarationOnNextLine: true
AllowShortBlocksOnASingleLine: true
AllowShortCaseLabelsOnASingleLine: true
AllowShortFunctionsOnASingleLine: Empty
AllowShortIfStatementsOnASingleLine: Never
AllowShortLambdasOnASingleLine: All
AllowShortLoopsOnASingleLine: false
AlwaysBreakAfterDefinitionReturnType: None
AlwaysBreakAfterReturnType: None
AlwaysBreakBeforeMultilineStrings: false
AlwaysBreakTemplateDeclarations: Yes
BreakBeforeBraces: Attach
BreakBeforeTernaryOperators: false
BreakConstructorInitializers: AfterColon
ColumnLimit: 180
CompactNamespaces: false
ConstructorInitializerAllOnOneLineOrOnePerLine: false
ExperimentalAutoDetectBinPacking: false
FixNamespaceComments: false
IncludeBlocks: Preserve
IndentCaseLabels: true
IndentWidth: 4
PointerAlignment: Left
ReflowComments: false
SortIncludes: false
SortUsingDeclarations: false
SpaceAfterCStyleCast: false
SpaceAfterLogicalNot: false
SpaceAfterTemplateKeyword: true
SpaceBeforeCtorInitializerColon: true
SpaceBeforeInheritanceColon: true
SpaceBeforeParens: ControlStatements
SpaceBeforeRangeBasedForLoopColon: true
SpaceInEmptyParentheses: false
SpacesBeforeTrailingComments: 1
SpacesInAngles: false
SpacesInCStyleCastParentheses: false
SpacesInContainerLiterals: false
SpacesInParentheses: false
SpacesInSquareBrackets: false
Standard: Auto
TabWidth: 4
UseTab: Never
AllowShortEnumsOnASingleLine: false
BraceWrapping:
AfterEnum: false
AlignConsecutiveDeclarations: AcrossEmptyLines
NamespaceIndentation: All

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@ -9,3 +9,5 @@ install_manifest.txt
compile_commands.json compile_commands.json
CTestTestfile.cmake CTestTestfile.cmake
_deps _deps
.vscode
build/

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cmake_minimum_required(VERSION 3.19)
project(hyprlang
VERSION "0.1"
DESCRIPTION "A library to parse hypr config files"
)
include(CTest)
set(CMAKE_CXX_STANDARD 23)
file(GLOB_RECURSE SRCFILES CONFIGURE_DEPENDS "src/*.cpp" "include/hyprlang.hpp")
add_library(hyprlang ${SRCFILES})
target_include_directories( hyprlang
PUBLIC "./include"
PRIVATE "./src"
)
add_executable(hyprlang_test "tests/main.cpp")
target_link_libraries(hyprlang_test PRIVATE hyprlang)
add_test(NAME "Parsing" WORKING_DIRECTORY "./tests/" COMMAND hyprlang_test "parse")

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#pragma once
#ifndef HYPRLANG_HPP
#define HYPRLANG_HPP
#include "../src/public.hpp"
namespace Hyprlang {};
#endif

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src/common.cpp Normal file
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#include "public.hpp"
#include <string.h>
using namespace Hyprlang;
void CParseResult::setError(const std::string& err) {
error = true;
errorStdString = err;
errorString = errorStdString.c_str();
}
void CParseResult::setError(const char* err) {
error = true;
errorStdString = err;
errorString = errorStdString.c_str();
}
CConfigValue::~CConfigValue() {
if (m_pData)
free(m_pData);
}
CConfigValue::CConfigValue(const int64_t value) {
m_pData = calloc(1, sizeof(int64_t));
*reinterpret_cast<int64_t*>(m_pData) = value;
m_eType = CONFIGDATATYPE_INT;
}
CConfigValue::CConfigValue(const float value) {
m_pData = calloc(1, sizeof(float));
*reinterpret_cast<float*>(m_pData) = value;
m_eType = CONFIGDATATYPE_FLOAT;
}
CConfigValue::CConfigValue(const char* value) {
m_pData = calloc(1, strlen(value) + 1);
strncpy((char*)m_pData, value, strlen(value));
m_eType = CONFIGDATATYPE_STR;
}
CConfigValue::CConfigValue(const CConfigValue& ref) {
m_eType = ref.m_eType;
switch (ref.m_eType) {
case eDataType::CONFIGDATATYPE_INT: {
m_pData = calloc(1, sizeof(int64_t));
*reinterpret_cast<int64_t*>(m_pData) = std::any_cast<int64_t>(ref.getValue());
break;
}
case eDataType::CONFIGDATATYPE_FLOAT: {
m_pData = calloc(1, sizeof(float));
*reinterpret_cast<float*>(m_pData) = std::any_cast<float>(ref.getValue());
break;
}
case eDataType::CONFIGDATATYPE_STR: {
auto str = std::any_cast<const char*>(ref.getValue());
m_pData = calloc(1, strlen(str) + 1);
strncpy((char*)m_pData, str, strlen(str));
break;
}
}
}
void CConfigValue::operator=(const CConfigValue& ref) {
m_eType = ref.m_eType;
switch (ref.m_eType) {
case eDataType::CONFIGDATATYPE_INT: {
m_pData = calloc(1, sizeof(int64_t));
*reinterpret_cast<int64_t*>(m_pData) = std::any_cast<int64_t>(ref.getValue());
break;
}
case eDataType::CONFIGDATATYPE_FLOAT: {
m_pData = calloc(1, sizeof(float));
*reinterpret_cast<float*>(m_pData) = std::any_cast<float>(ref.getValue());
break;
}
case eDataType::CONFIGDATATYPE_STR: {
auto str = std::any_cast<const char*>(ref.getValue());
m_pData = calloc(1, strlen(str) + 1);
strncpy((char*)m_pData, str, strlen(str));
break;
}
}
}
CConfigValue::CConfigValue(CConfigValue&& ref) {
m_pData = ref.dataPtr();
m_eType = ref.m_eType;
ref.m_eType = eDataType::CONFIGDATATYPE_EMPTY;
ref.m_pData = nullptr;
}
CConfigValue::CConfigValue() {
;
}
void* CConfigValue::dataPtr() const {
return m_pData;
}

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#include "config.hpp"
#include <filesystem>
#include <fstream>
#include <string>
#include <format>
using namespace Hyprlang;
static std::string removeBeginEndSpacesTabs(std::string str) {
if (str.empty())
return str;
int countBefore = 0;
while (str[countBefore] == ' ' || str[countBefore] == '\t') {
countBefore++;
}
int countAfter = 0;
while ((int)str.length() - countAfter - 1 >= 0 && (str[str.length() - countAfter - 1] == ' ' || str[str.length() - 1 - countAfter] == '\t')) {
countAfter++;
}
str = str.substr(countBefore, str.length() - countBefore - countAfter);
return str;
}
CConfig::CConfig(const char* path) {
impl = new CConfigImpl;
try {
impl->path = std::filesystem::canonical(path);
} catch (std::exception& e) { throw "Couldn't open file. File does not exist"; }
if (!std::filesystem::exists(impl->path))
throw "File does not exist";
}
CConfig::~CConfig() {
delete impl;
}
void CConfig::addConfigValue(const char* name, const CConfigValue value) {
if (m_bCommenced)
throw "Cannot addConfigValue after commence()";
impl->defaultValues[std::string{name}] = value;
}
void CConfig::commence() {
m_bCommenced = true;
for (auto& [k, v] : impl->defaultValues) {
impl->values[k] = v;
}
}
bool isNumber(const std::string& str, bool allowfloat) {
std::string copy = str;
if (*copy.begin() == '-')
copy = copy.substr(1);
if (copy.empty())
return false;
bool point = !allowfloat;
for (auto& c : copy) {
if (c == '.') {
if (point)
return false;
point = true;
continue;
}
if (!std::isdigit(c))
return false;
}
return true;
}
int64_t configStringToInt(const std::string& VALUE) {
if (VALUE.starts_with("0x")) {
// Values with 0x are hex
const auto VALUEWITHOUTHEX = VALUE.substr(2);
return stol(VALUEWITHOUTHEX, nullptr, 16);
} else if (VALUE.starts_with("rgba(") && VALUE.ends_with(')')) {
const auto VALUEWITHOUTFUNC = VALUE.substr(5, VALUE.length() - 6);
if (removeBeginEndSpacesTabs(VALUEWITHOUTFUNC).length() != 8) {
throw std::invalid_argument("rgba() expects length of 8 characters (4 bytes)");
}
const auto RGBA = std::stol(VALUEWITHOUTFUNC, nullptr, 16);
// now we need to RGBA -> ARGB. The config holds ARGB only.
return (RGBA >> 8) + 0x1000000 * (RGBA & 0xFF);
} else if (VALUE.starts_with("rgb(") && VALUE.ends_with(')')) {
const auto VALUEWITHOUTFUNC = VALUE.substr(4, VALUE.length() - 5);
if (removeBeginEndSpacesTabs(VALUEWITHOUTFUNC).length() != 6) {
throw std::invalid_argument("rgb() expects length of 6 characters (3 bytes)");
}
const auto RGB = std::stol(VALUEWITHOUTFUNC, nullptr, 16);
return RGB + 0xFF000000; // 0xFF for opaque
} else if (VALUE.starts_with("true") || VALUE.starts_with("on") || VALUE.starts_with("yes")) {
return 1;
} else if (VALUE.starts_with("false") || VALUE.starts_with("off") || VALUE.starts_with("no")) {
return 0;
}
if (VALUE.empty() || !isNumber(VALUE, false))
return 0;
return std::stoll(VALUE);
}
CParseResult CConfig::configSetValueSafe(const std::string& command, const std::string& value) {
CParseResult result;
std::string valueName;
for (auto& c : impl->categories) {
valueName += c + ':';
}
valueName += command;
const auto VALUEIT = impl->values.find(valueName);
if (VALUEIT == impl->values.end()) {
result.setError("config option doesn't exist");
return result;
}
switch (VALUEIT->second.m_eType) {
case CConfigValue::eDataType::CONFIGDATATYPE_INT: {
try {
VALUEIT->second = {configStringToInt(value)};
} catch (std::exception& e) {
result.setError(std::format("failed parsing an int: {}", e.what()));
return result;
}
break;
}
case CConfigValue::eDataType::CONFIGDATATYPE_FLOAT: {
try {
VALUEIT->second = {std::stof(value)};
} catch (std::exception& e) {
result.setError(std::format("failed parsing a float: {}", e.what()));
return result;
}
break;
}
case CConfigValue::eDataType::CONFIGDATATYPE_STR: {
VALUEIT->second = {value.c_str()};
break;
}
default: {
result.setError("internal error: invalid value found (no type?)");
return result;
}
}
return result;
}
CParseResult CConfig::parseLine(std::string line) {
CParseResult result;
auto commentPos = line.find('#');
size_t lastHashPos = 0;
while (commentPos != std::string::npos) {
bool escaped = false;
if (commentPos < line.length() - 1) {
if (line[commentPos + 1] == '#') {
lastHashPos = commentPos + 2;
escaped = true;
}
}
if (!escaped) {
line = line.substr(0, commentPos);
break;
} else {
commentPos = line.find('#', lastHashPos);
}
}
line = removeBeginEndSpacesTabs(line);
auto equalsPos = line.find('=');
if (equalsPos == std::string::npos && !line.ends_with("{") && line != "}" && !line.empty()) {
// invalid line
result.setError("Invalid config line");
return result;
}
if (equalsPos != std::string::npos) {
// set value
CParseResult ret = configSetValueSafe(removeBeginEndSpacesTabs(line.substr(0, equalsPos)), removeBeginEndSpacesTabs(line.substr(equalsPos + 1)));
if (ret.error) {
return ret;
}
} else if (!line.empty()) {
// has to be a set
if (line.contains("}")) {
// easiest. } or invalid.
if (line != "}") {
result.setError("Invalid config line");
return result;
}
if (impl->categories.empty()) {
result.setError("Stray category close");
return result;
}
impl->categories.pop_back();
} else {
// open a category.
if (!line.ends_with("{")) {
result.setError("Invalid category open, garbage after {");
return result;
}
line.pop_back();
line = removeBeginEndSpacesTabs(line);
impl->categories.push_back(line);
}
}
return result;
}
CParseResult CConfig::parse() {
if (!m_bCommenced)
throw "Cannot parse: not commenced. You have to .commence() first.";
impl->parseError = "";
for (auto& [k, v] : impl->defaultValues) {
impl->values.at(k) = v;
}
std::ifstream iffile(impl->path);
if (!iffile.good())
throw "Config file failed to open";
std::string line = "";
int linenum = 1;
CParseResult fileParseResult;
while (std::getline(iffile, line)) {
const auto RET = parseLine(line);
if (RET.error && impl->parseError.empty()) {
impl->parseError = RET.getError();
fileParseResult.setError(std::format("Config error at line {}: {}", linenum, RET.errorStdString));
}
++linenum;
}
iffile.close();
return fileParseResult;
}
CConfigValue* CConfig::getConfigValuePtr(const char* name) {
const auto IT = impl->values.find(std::string{name});
return IT == impl->values.end() ? nullptr : &IT->second;
}

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#include "public.hpp"
#include <unordered_map>
#include <string>
#include <vector>
class CConfigImpl {
public:
std::string path = "";
std::unordered_map<std::string, Hyprlang::CConfigValue> values;
std::unordered_map<std::string, Hyprlang::CConfigValue> defaultValues;
std::vector<std::string> categories;
std::string parseError = "";
};

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#pragma once

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#pragma once
namespace Logger {}

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#pragma once
#include <any>
#include <memory>
#include <string>
class CConfigImpl;
namespace Hyprlang {
struct SConfigValueImpl;
/* Container for a config value */
class CConfigValue {
public:
CConfigValue();
CConfigValue(const int64_t value);
CConfigValue(const float value);
CConfigValue(const char* value);
CConfigValue(const CConfigValue&);
CConfigValue(CConfigValue&&);
void operator=(const CConfigValue&);
~CConfigValue();
void* dataPtr() const;
std::any getValue() const {
switch (m_eType) {
case CONFIGDATATYPE_EMPTY: throw;
case CONFIGDATATYPE_INT: return std::any(*reinterpret_cast<int64_t*>(m_pData));
case CONFIGDATATYPE_FLOAT: return std::any(*reinterpret_cast<float*>(m_pData));
case CONFIGDATATYPE_STR: return std::any(reinterpret_cast<const char*>(m_pData));
default: throw;
}
return {}; // unreachable
}
private:
enum eDataType {
CONFIGDATATYPE_EMPTY,
CONFIGDATATYPE_INT,
CONFIGDATATYPE_FLOAT,
CONFIGDATATYPE_STR,
};
eDataType m_eType = eDataType::CONFIGDATATYPE_EMPTY;
void* m_pData = nullptr;
friend class CConfig;
};
class CParseResult {
public:
bool error = false;
const char* getError() const {
return errorString;
}
void setError(const char* err);
private:
void setError(const std::string& err);
std::string errorStdString = "";
const char* errorString = nullptr;
friend class CConfig;
};
/* Base class for a config file */
class CConfig {
public:
CConfig(const char* configPath);
~CConfig();
/* Add a config value, for example myCategory:myValue.
This has to be done before commence()
Value provided becomes default */
void addConfigValue(const char* name, const CConfigValue value);
/* Commence the config state. Config becomes immutable, as in
no new values may be added or removed. Required for parsing. */
void commence();
/* Parse the config. Refresh the values. */
CParseResult parse();
/* Get a config's value ptr. These are static.
nullptr on fail */
CConfigValue* getConfigValuePtr(const char* name);
/* Get a config value's stored value. Empty on fail*/
std::any getConfigValue(const char* name) {
CConfigValue* val = getConfigValuePtr(name);
if (!val)
return {};
return val->getValue();
}
private:
bool m_bCommenced = false;
CConfigImpl* impl;
CParseResult parseLine(std::string line);
CParseResult configSetValueSafe(const std::string& command, const std::string& value);
};
};

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# Test comment
testInt = 123
testFloat = 123.456
testString = Hello World! ## This is not a comment! # This is!
testCategory {
testValueInt = 123456
testValueHex = 0xFFFFaabb
nested1 {
testValueNest = 1
nested2 {
testValueNest = 1
}
}
}
testStringQuotes = "Hello World!"
#testDefault = 123
#doABarrelRoll = woohoo, some, params # Funny!
#doSomethingFunny = 1, 2, 3, 4 # Funnier!
#testSpaces = abc , def # many spaces, should be trimmed

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#include <iostream>
#include <hyprlang.hpp>
#define EXPECT(expr, val) \
if (const auto RESULT = expr; RESULT != (val)) { \
std::cout << "Failed: " << #expr << ", expected " << #val << " but got " << RESULT << "\n"; \
ret = 1; \
} else { \
std::cout << "Passed " << #expr << ". Got " << #val << "\n"; \
}
int main(int argc, char** argv, char** envp) {
int ret = 0;
try {
std::cout << "Starting test\n";
Hyprlang::CConfig config("./config/config.conf");
// setup config
config.addConfigValue("testInt", 0L);
config.addConfigValue("testFloat", 0.F);
config.addConfigValue("testString", "");
config.addConfigValue("testStringQuotes", "");
config.addConfigValue("testCategory:testValueInt", 0L);
config.addConfigValue("testCategory:testValueHex", 0xAL);
config.addConfigValue("testCategory:nested1:testValueNest", 0L);
config.addConfigValue("testCategory:nested1:nested2:testValueNest", 0L);
config.addConfigValue("testDefault", 123L);
config.commence();
const auto PARSERESULT = config.parse();
if (PARSERESULT.error) {
std::cout << "Parse error: " << PARSERESULT.getError() << "\n";
return 1;
}
EXPECT(PARSERESULT.error, false);
// test values
EXPECT(std::any_cast<int64_t>(config.getConfigValue("testInt")), 123);
EXPECT(std::any_cast<float>(config.getConfigValue("testFloat")), 123.456f);
EXPECT(std::any_cast<const char*>(config.getConfigValue("testString")), std::string{"Hello World! ## This is not a comment!"});
EXPECT(std::any_cast<const char*>(config.getConfigValue("testStringQuotes")), std::string{"\"Hello World!\""});
EXPECT(std::any_cast<int64_t>(config.getConfigValue("testCategory:testValueInt")), 123456L);
EXPECT(std::any_cast<int64_t>(config.getConfigValue("testCategory:testValueHex")), 0xFFFFAABBL);
EXPECT(std::any_cast<int64_t>(config.getConfigValue("testCategory:nested1:testValueNest")), 1L);
EXPECT(std::any_cast<int64_t>(config.getConfigValue("testCategory:nested1:nested2:testValueNest")), 1L);
EXPECT(std::any_cast<int64_t>(config.getConfigValue("testDefault")), 123L);
} catch (const char* e) {
std::cout << "Error: " << e << "\n";
return 1;
}
return ret;
}