toml11 is a C++11 (or later) header-only toml parser/encoder depending only on C++ standard library.
- It is compatible to the latest version of TOML v1.0.0.
- It is one of the most TOML standard compliant libraries, tested with the language agnostic test suite for TOML parsers by BurntSushi.
- It shows highly informative error messages. You can see the error messages about invalid files at CircleCI.
- It has configurable container. You can use any random-access containers and key-value maps as backend containers.
- It optionally preserves comments without any overhead.
- It has configurable serializer that supports comments, inline tables, literal strings and multiline strings.
- It supports user-defined type conversion from/into toml values.
- It correctly handles UTF-8 sequences, with or without BOM, both on posix and Windows.
#include <toml.hpp>
#include <iostream>
int main()
{
// ```toml
// title = "an example toml file"
// nums = [3, 1, 4, 1, 5]
// ```
auto data = toml::parse("example.toml");
// find a value with the specified type from a table
std::string title = toml::find<std::string>(data, "title");
// convert the whole array into any container automatically
std::vector<int> nums = toml::find<std::vector<int>>(data, "nums");
// access with STL-like manner
if(!data.contains("foo"))
{
data["foo"] = "bar";
}
// pass a fallback
std::string name = toml::find_or<std::string>(data, "name", "not found");
// width-dependent formatting
std::cout << std::setw(80) << data << std::endl;
return 0;
}- Integration
- Decoding a toml file
- Finding a toml value
- Casting a toml value
- Checking value type
- More about conversion
- Getting with a fallback
- Expecting conversion
- Visiting a toml::value
- Constructing a toml::value
- Preserving Comments
- Customizing containers
- TOML literal
- Conversion between toml value and arbitrary types
- Formatting user-defined error messages
- Obtaining location information
- Exceptions
- Colorize Error Messages
- Serializing TOML data
- Underlying types
- Unreleased TOML features
- Breaking Changes from v2
- Running Tests
- Contributors
- Licensing Terms
Just include the file after adding it to the include path.
#include <toml.hpp> // that's all! now you can use it.
#include <iostream>
int main()
{
const auto data = toml::parse("example.toml");
const auto title = toml::find<std::string>(data, "title");
std::cout << "the title is " << title << std::endl;
return 0;
}The convenient way is to add this repository as a git-submodule or to install it in your system by CMake.
Note for MSVC: We recommend to set /Zc:__cplusplus to detect C++ version correctly.
For local installation build & use the provided install target
git clone https://github.com/ToruNiina/toml11.git
mkdir -p toml11/build
cd toml11/build
cmake .. -DCMAKE_CXX_STANDARD=11
sudo make installIn case you want to create a .deb you can use checkinstall.
sudo checkinstall
[[ .. skipping for clarity ]]
**********************************************************************
Done. The new package has been installed and saved to
/home/user/toml11/build/build_20230728-1_amd64.deb
You can remove it from your system anytime using:
dpkg -r build
**********************************************************************You should get a package that you can install with dpkg -i <myfile>.deb and remove with dpkg -r <myfile>.deb
To parse a toml file, the only thing you have to do is
to pass a filename to the toml::parse function.
const std::string fname("sample.toml");
const toml::value data = toml::parse(fname);As required by the TOML specification, the top-level value is always a table.
You can find a value inside it, cast it into a table explicitly, and insert it as a value into other toml::value.
If it encounters an error while opening a file, it will throw std::runtime_error.
You can also pass a std::istream to the toml::parse function.
To show a filename in an error message, however, it is recommended to pass the
filename with the stream.
std::ifstream ifs("sample.toml", std::ios_base::binary);
assert(ifs.good());
const auto data = toml::parse(ifs, /*optional -> */ "sample.toml");Note: When you are on Windows, open a file in binary mode. If a file is opened in text-mode, CRLF ("\r\n") will automatically be converted to LF ("\n") and this causes inconsistency between file size and the contents that would be read. This causes weird error.
If there is a syntax error in a toml file, toml::parse will throw
toml::syntax_error that inherits std::exception.
toml11 has clean and informative error messages inspired by Rust and it looks like the following.
terminate called after throwing an instance of 'toml::syntax_error'
what(): [error] toml::parse_table: invalid line format # error description
--> example.toml # file name
3 | a = 42 = true # line num and content
| ^------ expected newline, but got '='. # error reasonIf you (mistakenly) duplicate tables and got an error, it is helpful to see where they are. toml11 shows both at the same time like the following.
terminate called after throwing an instance of 'toml::syntax_error'
what(): [error] toml::insert_value: table ("table") already exists.
--> duplicate-table.toml
1 | [table]
| ~~~~~~~ table already exists here
...
3 | [table]
| ~~~~~~~ table defined twiceWhen toml11 encounters a malformed value, it tries to detect what type it is. Then it shows hints to fix the format. An error message while reading one of the malformed files in the language agnostic test suite. is shown below.
what(): [error] bad time: should be HH:MM:SS.subsec
--> ./datetime-malformed-no-secs.toml
1 | no-secs = 1987-07-05T17:45Z
| ^------- HH:MM:SS.subsec
|
Hint: pass: 1979-05-27T07:32:00, 1979-05-27 07:32:00.999999
Hint: fail: 1979-05-27T7:32:00, 1979-05-27 17:32You can find other examples in a job named output_result on
CircleCI.
Since the error message generation is generally a difficult task, the current status is not ideal. If you encounter a weird error message, please let us know and contribute to improve the quality!
It throws syntax_error if a value of an escape sequence
representing unicode character is not a valid UTF-8 codepoint.
what(): [error] toml::read_utf8_codepoint: input codepoint is too large.
--> utf8.toml
1 | exceeds_unicode = "\U0011FFFF example"
| ^--------- should be in [0x00..0x10FFFF]After parsing successfully, you can obtain the values from the result of
toml::parse using toml::find function.
# sample.toml
answer = 42
pi = 3.14
numbers = [1,2,3]
time = 1979-05-27T07:32:00Zconst auto data = toml::parse("sample.toml");
const auto answer = toml::find<std::int64_t >(data, "answer");
const auto pi = toml::find<double >(data, "pi");
const auto numbers = toml::find<std::vector<int>>(data, "numbers");
const auto timepoint = toml::find<std::chrono::system_clock::time_point>(data, "time");By default, toml::find returns a toml::value.
const toml::value& answer = toml::find(data, "answer");When you pass an exact TOML type that does not require type conversion,
toml::find returns a reference without copying the value.
const auto data = toml::parse("sample.toml");
const auto& answer = toml::find<toml::integer>(data, "answer");If the specified type requires conversion, you can't take a reference to the value. See also underlying types.
NOTE: For some technical reason, automatic conversion between integer and
floating is not supported. If you want to get a floating value even if a value
has integer value, you need to convert it manually after obtaining a value,
like the following.
const auto vx = toml::find(data, "x");
double x = vx.is_floating() ? vx.as_floating(std::nothrow) :
static_cast<double>(vx.as_integer()); // it throws if vx is neither
// floating nor integer.There are several way to get a value defined in a table. First, you can get a table as a normal value and find a value from the table.
[fruit]
name = "apple"
[fruit.physical]
color = "red"
shape = "round"const auto data = toml::parse("fruit.toml");
const auto& fruit = toml::find(data, "fruit");
const auto name = toml::find<std::string>(fruit, "name");
const auto& physical = toml::find(fruit, "physical");
const auto color = toml::find<std::string>(physical, "color");
const auto shape = toml::find<std::string>(physical, "shape");Here, variable fruit is a toml::value and can be used as the first argument
of toml::find.
Second, you can pass as many arguments as the number of subtables to toml::find.
const auto data = toml::parse("fruit.toml");
const auto color = toml::find<std::string>(data, "fruit", "physical", "color");
const auto shape = toml::find<std::string>(data, "fruit", "physical", "shape");You can find n-th value in an array by toml::find.
values = ["foo", "bar", "baz"]const auto data = toml::parse("sample.toml");
const auto values = toml::find(data, "values");
const auto bar = toml::find<std::string>(values, 1);toml::find can also search array recursively.
const auto data = toml::parse("fruit.toml");
const auto bar = toml::find<std::string>(data, "values", 1);Before calling toml::find, you can check if a value corresponding to a key
exists. You can use both bool toml::value::contains(const key&) const and
std::size_t toml::value::count(const key&) const. Those behaves like the
std::map::contains and std::map::count.
const auto data = toml::parse("fruit.toml");
if(data.contains("fruit") && data.at("fruit").count("physical") != 0)
{
// ...
}If the value does not exist, toml::find throws std::out_of_range with the
location of the table.
terminate called after throwing an instance of 'std::out_of_range'
what(): [error] key "answer" not found
--> example.toml
6 | [tab]
| ~~~~~ in this tableIf the specified type differs from the actual value contained, it throws
toml::type_error that inherits std::exception.
Similar to the case of syntax error, toml11 also displays clean error messages.
The error message when you choose int to get string value would be like this.
terminate called after throwing an instance of 'toml::type_error'
what(): [error] toml::value bad_cast to integer
--> example.toml
3 | title = "TOML Example"
| ~~~~~~~~~~~~~~ the actual type is stringNOTE: In order to show this kind of error message, all the toml values have
a pointer to represent its range in a file. The entire contents of a file is
shared by toml::values and remains on the heap memory. It is recommended to
destruct all the toml::value classes after configuring your application
if you have a large TOML file compared to the memory resource.
TOML v0.5.0 has a new feature named "dotted keys". You can chain keys to represent the structure of the data.
physical.color = "orange"
physical.shape = "round"This is equivalent to the following.
[physical]
color = "orange"
shape = "round"You can get both of the above tables with the same c++ code.
const auto physical = toml::find(data, "physical");
const auto color = toml::find<std::string>(physical, "color");The following code does not work for the above toml file.
// XXX this does not work!
const auto color = toml::find<std::string>(data, "physical.color");The above code works with the following toml file.
"physical.color" = "orange"
# equivalent to {"physical.color": "orange"},
# NOT {"physical": {"color": "orange"}}.toml::parse returns toml::value. toml::value is a union type that can
contain one of the following types.
toml::boolean(bool)toml::integer(std::int64_t)toml::floating(double)toml::string(a type convertible to std::string)toml::local_datetoml::local_timetoml::local_datetimetoml::offset_datetimetoml::array(by default,std::vector<toml::value>)- It depends. See customizing containers for detail.
toml::table(by default,std::unordered_map<toml::key, toml::value>)- It depends. See customizing containers for detail.
To get a value inside, you can use toml::get<T>(). The usage is the same as
toml::find<T> (actually, toml::find internally uses toml::get after casting
a value to toml::table).
const toml::value data = toml::parse("sample.toml");
const toml::value answer_ = toml::get<toml::table >(data).at("answer");
const std::int64_t answer = toml::get<std::int64_t>(answer_);When you pass an exact TOML type that does not require type conversion,
toml::get returns a reference through which you can modify the content
(if the toml::value is const, it returns const reference).
toml::value data = toml::parse("sample.toml");
toml::value answer_ = toml::get<toml::table >(data).at("answer");
toml::integer& answer = toml::get<toml::integer>(answer_);
answer = 6 * 9; // write to data.answer. now `answer_` contains 54.If the specified type requires conversion, you can't take a reference to the value. See also underlying types.
It also throws a toml::type_error if the type differs.
You can also use a member function to cast a value.
const std::int64_t answer = data.as_table().at("answer").as_integer();It also throws a toml::type_error if the type differs. If you are sure that
the value v contains a value of the specified type, you can suppress checking
by passing std::nothrow.
const auto& answer = data.as_table().at("answer");
if(answer.is_integer() && answer.as_integer(std::nothrow) == 42)
{
std::cout << "value is 42" << std::endl;
}If std::nothrow is passed, the functions are marked as noexcept.
By casting a toml::value into an array or a table, you can iterate over the
elements.
const auto data = toml::parse("example.toml");
std::cout << "keys in the top-level table are the following: \n";
for(const auto& kv : data.as_table())
{
std::cout << kv.first << '\n';
}
for(const auto& [k, v] : data.as_table()) // or in C++17
{
std::cout << k << '\n';
}
const auto& fruits = toml::find(data, "fruits");
for(const auto& v : fruits.as_array())
{
std::cout << toml::find<std::string>(v, "name") << '\n';
}The full list of the functions is below.
namespace toml {
class value {
// ...
const boolean& as_boolean() const&;
const integer& as_integer() const&;
const floating& as_floating() const&;
const string& as_string() const&;
const offset_datetime& as_offset_datetime() const&;
const local_datetime& as_local_datetime() const&;
const local_date& as_local_date() const&;
const local_time& as_local_time() const&;
const array& as_array() const&;
const table& as_table() const&;
// --------------------------------------------------------
// non-const version
boolean& as_boolean() &;
// ditto...
// --------------------------------------------------------
// rvalue version
boolean&& as_boolean() &&;
// ditto...
// --------------------------------------------------------
// noexcept versions ...
const boolean& as_boolean(const std::nothrow_t&) const& noexcept;
boolean& as_boolean(const std::nothrow_t&) & noexcept;
boolean&& as_boolean(const std::nothrow_t&) && noexcept;
// ditto...
};
} // tomlYou can access to the element of a table and an array by toml::basic_value::at.
const toml::value v{1,2,3,4,5};
std::cout << v.at(2).as_integer() << std::endl; // 3
const toml::value v{{"foo", 42}, {"bar", 3.14}};
std::cout << v.at("foo").as_integer() << std::endl; // 42If an invalid key (integer for a table, string for an array), it throws
toml::type_error for the conversion. If the provided key is out-of-range,
it throws std::out_of_range.
Note that, although std::string has at() member function, toml::value::at
throws if the contained type is a string. Because std::string does not
contain toml::value.
You can also access to the element of a table and an array by
toml::basic_value::operator[].
const toml::value v{1,2,3,4,5};
std::cout << v[2].as_integer() << std::endl; // 3
const toml::value v{{"foo", 42}, {"bar", 3.14}};
std::cout << v["foo"].as_integer() << std::endl; // 42When you access to a toml::value that is not initialized yet via
operator[](const std::string&), the toml::value will be a table,
just like the std::map.
toml::value v; // not initialized as a table.
v["foo"] = 42; // OK. `v` will be a table.Contrary, if you access to a toml::value that contains an array via operator[],
it does not check anything. It converts toml::value without type check and then
access to the n-th element without boundary check, just like the std::vector::operator[].
toml::value v; // not initialized as an array
v[2] = 42; // error! UBPlease make sure that the toml::value has an array inside when you access to
its element via operator[].
You can check the type of a value by is_xxx function.
const toml::value v = /* ... */;
if(v.is_integer())
{
std::cout << "value is an integer" << std::endl;
}The complete list of the functions is below.
namespace toml {
class value {
// ...
bool is_boolean() const noexcept;
bool is_integer() const noexcept;
bool is_floating() const noexcept;
bool is_string() const noexcept;
bool is_offset_datetime() const noexcept;
bool is_local_datetime() const noexcept;
bool is_local_date() const noexcept;
bool is_local_time() const noexcept;
bool is_array() const noexcept;
bool is_table() const noexcept;
bool is_uninitialized() const noexcept;
// ...
};
} // tomlAlso, you can get enum class value_t from toml::value::type().
switch(data.at("something").type())
{
case toml::value_t::integer: /*do some stuff*/ ; break;
case toml::value_t::floating: /*do some stuff*/ ; break;
case toml::value_t::string : /*do some stuff*/ ; break;
default : throw std::runtime_error(
"unexpected type : " + toml::stringize(data.at("something").type()));
}The complete list of the enums can be found in the section
underlying types.
The enums can be used as a parameter of toml::value::is function like the following.
toml::value v = /* ... */;
if(v.is(toml::value_t::boolean)) // ...Since toml::find internally uses toml::get, all the following examples work
with both toml::get and toml::find.
You can get any kind of container class from a toml::array
except for map-like classes.
// # sample.toml
// numbers = [1,2,3]
const auto numbers = toml::find(data, "numbers");
const auto vc = toml::get<std::vector<int> >(numbers);
const auto ls = toml::get<std::list<int> >(numbers);
const auto dq = toml::get<std::deque<int> >(numbers);
const auto ar = toml::get<std::array<int, 3>>(numbers);
// if the size of data.at("numbers") is larger than that of std::array,
// it will throw toml::type_error because std::array is not resizable.Surprisingly, you can convert toml::array into std::pair and std::tuple.
// numbers = [1,2,3]
const auto tp = toml::get<std::tuple<short, int, unsigned int>>(numbers);This functionality is helpful when you have a toml file like the following.
array_of_arrays = [[1, 2, 3], ["foo", "bar", "baz"]] # toml allows thisWhat is the corresponding C++ type?
Obviously, it is a std::pair of std::vectors.
const auto array_of_arrays = toml::find(data, "array_of_arrays");
const auto aofa = toml::get<
std::pair<std::vector<int>, std::vector<std::string>>
>(array_of_arrays);If you don't know the type of the elements, you can use toml::array,
which is a std::vector of toml::value, instead.
const auto a_of_a = toml::get<toml::array>(array_of_arrays);
const auto first = toml::get<std::vector<int>>(a_of_a.at(0));You can change the implementation of toml::array with std::deque or some
other array-like container. See Customizing containers
for detail.
When all the values of the table have the same type, toml11 allows you to
convert a toml::table to a map that contains the convertible type.
[tab]
key1 = "foo" # all the values are
key2 = "bar" # toml Stringconst auto data = toml::parse("sample.toml");
const auto tab = toml::find<std::map<std::string, std::string>>(data, "tab");
std::cout << tab["key1"] << std::endl; // foo
std::cout << tab["key2"] << std::endl; // barBut since toml::table is just an alias of std::unordered_map<toml::key, toml::value>,
normally you don't need to convert it because it has all the functionalities that
std::unordered_map has (e.g. operator[], count, and find). In most cases
toml::table is sufficient.
toml::table tab = toml::get<toml::table>(data);
if(data.count("title") != 0)
{
data["title"] = std::string("TOML example");
}You can change the implementation of toml::table with std::map or some
other map-like container. See Customizing containers
for detail.
An array of tables is just an array of tables. You can get it in completely the same way as the other arrays and tables.
# sample.toml
array_of_inline_tables = [{key = "value1"}, {key = "value2"}, {key = "value3"}]
[[array_of_tables]]
key = "value4"
[[array_of_tables]]
key = "value5"
[[array_of_tables]]
key = "value6"const auto data = toml::parse("sample.toml");
const auto aot1 = toml::find<std::vector<toml::table>>(data, "array_of_inline_tables");
const auto aot2 = toml::find<std::vector<toml::table>>(data, "array_of_tables");Although conversion through toml::(get|find) is convenient, it has additional
copy-cost because it copies data contained in toml::value to the
user-specified type. Of course in some cases this overhead is not ignorable.
// the following code constructs a std::vector.
// it requires heap allocation for vector and element conversion.
const auto array = toml::find<std::vector<int>>(data, "foo");By passing the exact types, toml::get returns reference that has no overhead.
const auto& tab = toml::find<toml::table>(data, "tab");
const auto& numbers = toml::find<toml::array>(data, "numbers");Also, as_xxx are zero-overhead because they always return a reference.
const auto& tab = toml::find(data, "tab" ).as_table();
const auto& numbers = toml::find(data, "numbers").as_array();In this case you need to call toml::get each time you access to
the element of toml::array because toml::array is an array of toml::value.
const auto& num0 = toml::get<toml::integer>(numbers.at(0));
const auto& num1 = toml::get<toml::integer>(numbers.at(1));
const auto& num2 = toml::get<toml::integer>(numbers.at(2));TOML v0.5.0 has 4 different datetime objects, local_date, local_time,
local_datetime, and offset_datetime.
Since local_date, local_datetime, and offset_datetime represent a time
point, you can convert them to std::chrono::system_clock::time_point.
Contrary, local_time does not represents a time point because they lack a
date information, but it can be converted to std::chrono::duration that
represents a duration from the beginning of the day, 00:00:00.000.
# sample.toml
date = 2018-12-23
time = 12:30:00
l_dt = 2018-12-23T12:30:00
o_dt = 2018-12-23T12:30:00+09:30const auto data = toml::parse("sample.toml");
const auto date = toml::get<std::chrono::system_clock::time_point>(data.at("date"));
const auto l_dt = toml::get<std::chrono::system_clock::time_point>(data.at("l_dt"));
const auto o_dt = toml::get<std::chrono::system_clock::time_point>(data.at("o_dt"));
const auto time = toml::get<std::chrono::minutes>(data.at("time")); // 12 * 60 + 30 minlocal_date and local_datetime are assumed to be in the local timezone when
they are converted into time_point. On the other hand, offset_datetime only
uses the offset part of the data and it does not take local timezone into account.
To contain datetime data, toml11 defines its own datetime types. For more detail, you can see the definitions in toml/datetime.hpp.
toml::find_or returns a default value if the value is not found or has a
different type.
const auto data = toml::parse("example.toml");
const auto num = toml::find_or(data, "num", 42);It works recursively if you pass several keys for subtables.
In that case, the last argument is considered to be the optional value.
All other arguments between toml::value and the optional value are considered as keys.
// [fruit.physical]
// color = "red"
auto data = toml::parse("fruit.toml");
auto color = toml::find_or(data, "fruit", "physical", "color", "red");
// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^
// arguments optional valueAlso, toml::get_or returns a default value if toml::get<T> failed.
toml::value v("foo"); // v contains String
const int value = toml::get_or(v, 42); // conversion fails. it returns 42.These functions automatically deduce what type you want to get from the default value you passed.
To get a reference through this function, take care about the default value.
toml::value v("foo"); // v contains String
toml::integer& i = toml::get_or(v, 42); // does not work because binding `42`
// to `integer&` is invalid
toml::integer opt = 42;
toml::integer& i = toml::get_or(v, opt); // this works.By using toml::expect, you will get your expected value or an error message
without throwing toml::type_error.
const auto value = toml::expect<std::string>(data.at("title"));
if(value.is_ok()) {
std::cout << value.unwrap() << std::endl;
} else {
std::cout << value.unwrap_err() << std::endl;
}Also, you can pass a function object to modify the expected value.
const auto value = toml::expect<int>(data.at("number"))
.map(// function that receives expected type (here, int)
[](const int number) -> double {
return number * 1.5 + 1.0;
}).unwrap_or(/*default value =*/ 3.14);toml11 provides toml::visit to apply a function to toml::value in the
same way as std::variant.
const toml::value v(3.14);
toml::visit([](const auto& val) -> void {
std::cout << val << std::endl;
}, v);The function object that would be passed to toml::visit must be able to
receive all the possible TOML types. Also, the result types should be the same
each other.
toml::value can be constructed in various ways.
toml::value v(true); // boolean
toml::value v(42); // integer
toml::value v(3.14); // floating
toml::value v("foobar"); // string
toml::value v(toml::local_date(2019, toml::month_t::Apr, 1)); // date
toml::value v{1, 2, 3, 4, 5}; // array
toml::value v{{"foo", 42}, {"bar", 3.14}, {"baz", "qux"}}; // tableWhen constructing a string, you can choose to use either literal or basic string. By default, it will be a basic string.
toml::value v("foobar", toml::string_t::basic );
toml::value v("foobar", toml::string_t::literal);Datetime objects can be constructed from std::tm and
std::chrono::system_clock::time_point. But you need to specify what type
you use to avoid ambiguity.
const auto now = std::chrono::system_clock::now();
toml::value v(toml::local_date(now));
toml::value v(toml::local_datetime(now));
toml::value v(toml::offset_datetime(now));Since local time is not equivalent to a time point, because it lacks date
information, it will be constructed from std::chrono::duration.
toml::value v(toml::local_time(std::chrono::hours(10)));You can construct an array object not only from initializer_list, but also
from STL containers. In that case, the element type must be convertible to
toml::value.
std::vector<int> vec{1,2,3,4,5};
toml::value v(vec);When you construct an array value, all the elements of initializer_list
must be convertible into toml::value.
If a toml::value has an array, you can push_back an element in it.
toml::value v{1,2,3,4,5};
v.push_back(6);emplace_back also works.
toml11 v3 or later allows you yo choose whether comments are preserved or not via template parameter
const auto data1 = toml::parse<toml::discard_comments >("example.toml");
const auto data2 = toml::parse<toml::preserve_comments>("example.toml");or macro definition.
#define TOML11_PRESERVE_COMMENTS_BY_DEFAULT
#include <toml11/toml.hpp>This feature is controlled by template parameter in toml::basic_value<...>.
toml::value is an alias of toml::basic_value<...>.
If template parameter is explicitly specified, the return value of toml::parse
will be toml::basic_value<toml::preserve_comments>.
If the macro is defined, the alias toml::value will be
toml::basic_value<toml::preserve_comments>.
Comments related to a value can be obtained by toml::value::comments().
The return value has the same interface as std::vector<std::string>.
const auto& com = v.comments();
for(const auto& c : com)
{
std::cout << c << std::endl;
}Comments just before and just after (within the same line) a value are kept in a value.
# this is a comment for v1.
v1 = "foo"
v2 = "bar" # this is a comment for v2.
# Note that this comment is NOT a comment for v2.
# this comment is not related to any value
# because there are empty lines between v3.
# this comment will be ignored even if you set `preserve_comments`.
# this is a comment for v3
# this is also a comment for v3.
v3 = "baz" # ditto.Each comment line becomes one element of a std::vector.
Hash signs will be removed, but spaces after hash sign will not be removed.
v1.comments().at(0) == " this is a comment for v1."s;
v2.comments().at(1) == " this is a comment for v1."s;
v3.comments().at(0) == " this is a comment for v3."s;
v3.comments().at(1) == " this is also a comment for v3."s;
v3.comments().at(2) == " ditto."s;Note that a comment just after an opening brace of an array will not be a comment for the array.
# this is a comment for a.
a = [ # this is not a comment for a. this will be ignored.
1, 2, 3,
# this is a comment for `42`.
42, # this is also a comment for `42`.
5
] # this is a comment for a.You can also append and modify comments.
The interfaces are the same as std::vector<std::string>.
toml::basic_value<toml::preserve_comments> v(42);
v.comments().push_back(" add this comment.");
// # add this comment.
// i = 42Also, you can pass a std::vector<std::string> when constructing a
toml::basic_value<toml::preserve_comments>.
std::vector<std::string> comments{"comment 1", "comment 2"};
const toml::basic_value<toml::preserve_comments> v1(42, std::move(comments));
const toml::basic_value<toml::preserve_comments> v2(42, {"comment 1", "comment 2"});When toml::discard_comments is chosen, comments will not be contained in a value.
value::comments() will always be kept empty.
All the modification on comments would be ignored.
All the element access in a discard_comments causes the same error as accessing
an element of an empty std::vector.
The comments will also be serialized. If comments exist, those comments will be added just before the values.
NOTE: Result types from toml::parse(...) and
toml::parse<toml::preserve_comments>(...) are different.
Actually, toml::basic_value has 3 template arguments.
template<typename Comment, // discard/preserve_comment
template<typename ...> class Table = std::unordered_map,
template<typename ...> class Array = std::vector>
class basic_value;This enables you to change the containers used inside. E.g. you can use
std::map to contain a table object instead of std::unordered_map.
And also can use std::deque as a array object instead of std::vector.
You can set these parameters while calling toml::parse function.
const auto data = toml::parse<
toml::preserve_comments, std::map, std::deque
>("example.toml");Needless to say, the result types from toml::parse(...) and
toml::parse<Com, Map, Cont>(...) are different (unless you specify the same
types as default).
Note that, since toml::table and toml::array is an alias for a table and an
array of a default toml::value, so it is different from the types actually
contained in a toml::basic_value when you customize containers.
To get the actual type in a generic way, use
typename toml::basic_type<C, T, A>::table_type and
typename toml::basic_type<C, T, A>::array_type.
toml11 supports "..."_toml literal.
It accept both a bare value and a file content.
using namespace toml::literals::toml_literals;
// `_toml` can convert a bare value without key
const toml::value v = u8"0xDEADBEEF"_toml;
// v is an Integer value containing 0xDEADBEEF.
// raw string literal (`R"(...)"` is useful for this purpose)
const toml::value t = u8R"(
title = "this is TOML literal"
[table]
key = "value"
)"_toml;
// the literal will be parsed and the result will be contained in tThe literal function is defined in the same way as the standard library literals
such as std::literals::string_literals::operator""s.
namespace toml
{
inline namespace literals
{
inline namespace toml_literals
{
toml::value operator"" _toml(const char* str, std::size_t len);
} // toml_literals
} // literals
} // tomlAccess to the operator can be gained with using namespace toml::literals;,
using namespace toml::toml_literals, and using namespace toml::literals::toml_literals.
Note that a key that is composed only of digits is allowed in TOML.
And, unlike the file parser, toml-literal allows a bare value without a key.
Thus it is difficult to distinguish arrays having integers and definitions of
tables that are named as digits.
Currently, literal [1] becomes a table named "1".
To ensure a literal to be considered as an array with one element, you need to
add a comma after the first element (like [1,]).
"[1,2,3]"_toml; // This is an array
"[table]"_toml; // This is a table that has an empty table named "table" inside.
"[[1,2,3]]"_toml; // This is an array of arrays
"[[table]]"_toml; // This is a table that has an array of tables inside.
"[[1]]"_toml; // This literal is ambiguous.
// Currently, it becomes an empty array of table named "1".
"1 = [{}]"_toml; // This is a table that has an array of table named 1.
"[[1,]]"_toml; // This is an array of arrays.
"[[1],]"_toml; // ditto.NOTE: _toml literal returns a toml::value that does not have comments.
You can also use toml::get and other related functions with the types
you defined after you implement a way to convert it.
namespace ext
{
struct foo
{
int a;
double b;
std::string c;
};
} // ext
const auto data = toml::parse("example.toml");
// to do this
const foo f = toml::find<ext::foo>(data, "foo");There are 3 ways to use toml::get with the types that you defined.
The first one is to implement from_toml(const toml::value&) member function.
namespace ext
{
struct foo
{
int a;
double b;
std::string c;
void from_toml(const toml::value& v)
{
this->a = toml::find<int >(v, "a");
this->b = toml::find<double >(v, "b");
this->c = toml::find<std::string>(v, "c");
return;
}
};
} // extIn this way, because toml::get first constructs foo without arguments,
the type should be default-constructible.
The second is to implement constructor(const toml::value&).
namespace ext
{
struct foo
{
explicit foo(const toml::value& v)
: a(toml::find<int>(v, "a")), b(toml::find<double>(v, "b")),
c(toml::find<std::string>(v, "c"))
{}
int a;
double b;
std::string c;
};
} // extNote that implicit default constructor declaration will be suppressed
when a constructor is defined. If you want to use the struct (here, foo)
in a container (e.g. std::vector<foo>), you may need to define default
constructor explicitly.
The third is to implement specialization of toml::from for your type.
namespace ext
{
struct foo
{
int a;
double b;
std::string c;
};
} // ext
namespace toml
{
template<>
struct from<ext::foo>
{
static ext::foo from_toml(const value& v)
{
ext::foo f;
f.a = find<int >(v, "a");
f.b = find<double >(v, "b");
f.c = find<std::string>(v, "c");
return f;
}
};
} // tomlIn this way, since the conversion function is defined outside of the class,
you can add conversion between toml::value and classes defined in another library.
In some cases, a class has a templatized constructor that takes a template, T.
It confuses toml::get/find<T> because it makes the class "constructible" from
toml::value. To avoid this problem, toml::from and from_toml always
precede constructor. It makes easier to implement conversion between
toml::value and types defined in other libraries because it skips constructor.
But, importantly, you cannot define toml::from<T> and T.from_toml at the same
time because it causes ambiguity in the overload resolution of toml::get<T> and toml::find<T>.
So the precedence is toml::from<T> == T.from_toml() > T(toml::value).
If you want to convert any versions of toml::basic_value,
you need to templatize the conversion function as follows.
struct foo
{
template<typename C, template<typename ...> class M, template<typename ...> class A>
void from_toml(const toml::basic_value<C, M, A>& v)
{
this->a = toml::find<int >(v, "a");
this->b = toml::find<double >(v, "b");
this->c = toml::find<std::string>(v, "c");
return;
}
};
// or
namespace toml
{
template<>
struct from<ext::foo>
{
template<typename C, template<typename ...> class M, template<typename ...> class A>
static ext::foo from_toml(const basic_value<C, M, A>& v)
{
ext::foo f;
f.a = find<int >(v, "a");
f.b = find<double >(v, "b");
f.c = find<std::string>(v, "c");
return f;
}
};
} // tomlThe opposite direction is also supported in a similar way. You can directly
pass your type to toml::value's constructor by introducing into_toml or
toml::into<T>.
namespace ext
{
struct foo
{
int a;
double b;
std::string c;
toml::value into_toml() const // you need to mark it const.
{
return toml::value{{"a", this->a}, {"b", this->b}, {"c", this->c}};
}
};
} // ext
ext::foo f{42, 3.14, "foobar"};
toml::value v(f);The definition of toml::into<T> is similar to toml::from<T>.
namespace ext
{
struct foo
{
int a;
double b;
std::string c;
};
} // ext
namespace toml
{
template<>
struct into<ext::foo>
{
static toml::value into_toml(const ext::foo& f)
{
return toml::value{{"a", f.a}, {"b", f.b}, {"c", f.c}};
}
};
} // toml
ext::foo f{42, 3.14, "foobar"};
toml::value v(f);Any type that can be converted to toml::value, e.g. int, toml::table and
toml::array are okay to return from into_toml.
You can also return a custom toml::basic_value from toml::into.
namespace toml
{
template<>
struct into<ext::foo>
{
static toml::basic_value<toml::preserve_comments> into_toml(const ext::foo& f)
{
toml::basic_value<toml::preserve_comments> v{{"a", f.a}, {"b", f.b}, {"c", f.c}};
v.comments().push_back(" comment");
return v;
}
};
} // tomlBut note that, if this basic_value would be assigned into other toml::value
that discards comments, the comments would be dropped.
There is a helper macro that automatically generates conversion functions from and into for a simple struct.
namespace foo
{
struct Foo
{
std::string s;
double d;
int i;
};
} // foo
TOML11_DEFINE_CONVERSION_NON_INTRUSIVE(foo::Foo, s, d, i)
int main()
{
const auto file = toml::parse("example.toml");
auto f = toml::find<foo::Foo>(file, "foo");
}And then you can use toml::find<foo::Foo>(file, "foo");
Note that, because of a slight difference in implementation of preprocessor between gcc/clang and MSVC, you need to define /Zc:preprocessor to use it in MSVC (Thank you @glebm !).
When you encounter an error after you read the toml value, you may want to show the error with the value.
toml11 provides you a function that formats user-defined error message with related values. With a code like the following,
const auto value = toml::find<int>(data, "num");
if(value < 0)
{
std::cerr << toml::format_error("[error] value should be positive",
data.at("num"), "positive number required")
<< std::endl;
}you will get an error message like this.
[error] value should be positive
--> example.toml
3 | num = -42
| ~~~ positive number requiredWhen you pass two values to toml::format_error,
const auto min = toml::find<int>(range, "min");
const auto max = toml::find<int>(range, "max");
if(max < min)
{
std::cerr << toml::format_error("[error] max should be larger than min",
data.at("min"), "minimum number here",
data.at("max"), "maximum number here");
<< std::endl;
}you will get an error message like this.
[error] max should be larger than min
--> example.toml
3 | min = 54
| ~~ minimum number here
...
4 | max = 42
| ~~ maximum number hereYou can print hints at the end of the message.
std::vector<std::string> hints;
hints.push_back("positive number means n >= 0.");
hints.push_back("negative number is not positive.");
std::cerr << toml::format_error("[error] value should be positive",
data.at("num"), "positive number required", hints)
<< std::endl;[error] value should be positive
--> example.toml
2 | num = 42
| ~~ positive number required
|
Hint: positive number means n >= 0.
Hint: negative number is not positive.You can also format error messages in your own way by using source_location.
struct source_location
{
std::uint_least32_t line() const noexcept;
std::uint_least32_t column() const noexcept;
std::uint_least32_t region() const noexcept;
std::string const& file_name() const noexcept;
std::string const& line_str() const noexcept;
};
// +-- line() +--- length of the region (here, region() == 9)
// v .---+---.
// 12 | value = "foo bar" <- line_str() returns the line itself.
// ^-------- column() points hereYou can get this by
const toml::value v = /*...*/;
const toml::source_location loc = v.location();The following exception classes inherits toml::exception that inherits
std::exception.
namespace toml {
struct exception : public std::exception {/**/};
struct syntax_error : public toml::exception {/**/};
struct type_error : public toml::exception {/**/};
struct internal_error : public toml::exception {/**/};
} // tomltoml::exception has toml::exception::location() member function that returns
toml::source_location, in addition to what().
namespace toml {
struct exception : public std::exception
{
// ...
source_location const& location() const noexcept;
};
} // tomlIt represents where the error occurs.
syntax_error will be thrown from toml::parse and _toml literal.
type_error will be thrown from toml::get/find, toml::value::as_xxx(), and
other functions that takes a content inside of toml::value.
Note that, currently, from toml::value::at() and toml::find(value, key)
may throw an std::out_of_range that does not inherits toml::exception.
Also, in some cases, most likely in the file open error, it will throw an
std::runtime_error.
By defining TOML11_COLORIZE_ERROR_MESSAGE, the error messages from
toml::parse and toml::find|get will be colorized. By default, this feature
is turned off.
With the following toml file taken from toml-lang/toml/tests/hard_example.toml,
[error]
array = [
"This might most likely happen in multiline arrays",
Like here,
"or here,
and here"
] End of array comment, forgot the #the error message would be like this.
With the following,
[error]
# array = [
# "This might most likely happen in multiline arrays",
# Like here,
# "or here,
# and here"
# ] End of array comment, forgot the #
number = 3.14 pi <--again forgot the #the error message would be like this.
The message would be messy when it is written to a file, not a terminal because it uses ANSI escape code.
Without TOML11_COLORIZE_ERROR_MESSAGE, you can still colorize user-defined
error message by passing true to the toml::format_error function.
If you define TOML11_COLORIZE_ERROR_MESSAGE, the value is true by default.
If not, the default value would be false.
std::cerr << toml::format_error("[error] value should be positive",
data.at("num"), "positive number required",
hints, /*colorize = */ true) << std::endl;Note: It colorizes [error] in red. That means that it detects [error] prefix
at the front of the error message. If there is no [error] prefix,
format_error adds it to the error message.
Compared to the TOML11_COLORIZE_ERROR_MESSAGE macro that enables colorization
statically, toml11 provides toml::color::enable & toml::color::disable
functions to dynamically change the color mode. This feature overwrites
TOML11_COLORIZE_ERROR_MESSAGE and the colorize argument of
toml::format_error when you call enable.
Note: If either TOML11_COLORIZE_ERROR_MESSAGE is defined or the colorize
argument is used, it takes precedence, meaning that disable won't work.
Accordingly, we highly recommend using only one of them.
toml::color::enable(); // enable colorization
toml::color::disable(); // disable colorizationIf you use user-defined error message, you can manage the setting as follows:
toml::color::enable();
std::cerr << toml::format_error("[error] value should be positive",
data.at("num"), "positive number required",
hints) << std::endl; // colorized
toml::color::disable();
std::cerr << toml::format_error("[error] value should be positive",
data.at("num"), "positive number required",
hints) << std::endl; // NOT colorizedOr you may use toml11 in your application like:
std::vector<std::string> args(argv + 1, argv + argc);
auto result = std::find(args.begin(), args.end(), "--color");
if (result != args.end()) {
toml::color::enable();
} else {
toml::color::disable();
}
// use toml11 ...toml11 prints error messages with the [error] prefix by default.
Defining TOML11_NO_ERROR_PREFIX will let toml11 omit the prefix regardless of colorized or not in case you would use a custom prefix, such as Error:.
#define TOML11_NO_ERROR_PREFIXtoml11 enables you to serialize data into toml format.
const toml::value data{{"foo", 42}, {"bar", "baz"}};
std::cout << data << std::endl;
// bar = "baz"
// foo = 42toml11 automatically makes a small table and small array inline.
You can specify the width to make them inline by std::setw for streams.
const toml::value data{
{"qux", {{"foo", 42}, {"bar", "baz"}}},
{"quux", {"small", "array", "of", "strings"}},
{"foobar", {"this", "array", "of", "strings", "is", "too", "long",
"to", "print", "into", "single", "line", "isn't", "it?"}},
};
// the threshold becomes 80.
std::cout << std::setw(80) << data << std::endl;
// foobar = [
// "this","array","of","strings","is","too","long","to","print","into",
// "single","line","isn't","it?",
// ]
// quux = ["small","array","of","strings"]
// qux = {bar="baz",foo=42}
// the width is 0. nothing become inline.
std::cout << std::setw(0) << data << std::endl;
// foobar = [
// "this",
// ... (snip)
// "it?",
// ]
// quux = [
// "small",
// "array",
// "of",
// "strings",
// ]
// [qux]
// bar = "baz"
// foo = 42It is recommended to set width before printing data. Some I/O functions changes
width to 0, and it makes all the stuff (including toml::array) multiline.
The resulting files becomes too long.
To control the precision of floating point numbers, you need to pass
std::setprecision to stream.
const toml::value data{
{"pi", 3.141592653589793},
{"e", 2.718281828459045}
};
std::cout << std::setprecision(17) << data << std::endl;
// e = 2.7182818284590451
// pi = 3.1415926535897931
std::cout << std::setprecision( 7) << data << std::endl;
// e = 2.718282
// pi = 3.141593There is another way to format toml values, toml::format().
It returns std::string that represents a value.
const toml::value v{{"a", 42}};
const std::string fmt = toml::format(v);
// a = 42Note that since toml::format formats a value, the resulting string may lack
the key value.
const toml::value v{3.14};
const std::string fmt = toml::format(v);
// 3.14To control the width and precision, toml::format receives optional second and
third arguments to set them. By default, the width is 80 and the precision is
std::numeric_limits<double>::max_digit10.
const auto serial = toml::format(data, /*width = */ 0, /*prec = */ 17);When you pass a comment-preserving-value, the comment will also be serialized. An array or a table containing a value that has a comment would not be inlined.
The toml types (can be used as toml::* in this library) and corresponding enum names are listed in the table below.
| TOML type | underlying c++ type | enum class |
|---|---|---|
| Boolean | bool |
toml::value_t::boolean |
| Integer | std::int64_t |
toml::value_t::integer |
| Float | double |
toml::value_t::floating |
| String | toml::string |
toml::value_t::string |
| LocalDate | toml::local_date |
toml::value_t::local_date |
| LocalTime | toml::local_time |
toml::value_t::local_time |
| LocalDatetime | toml::local_datetime |
toml::value_t::local_datetime |
| OffsetDatetime | toml::offset_datetime |
toml::value_t::offset_datetime |
| Array | array-like<toml::value> |
toml::value_t::array |
| Table | map-like<toml::key, toml::value> |
toml::value_t::table |
array-like and map-like are the STL containers that works like a std::vector and
std::unordered_map, respectively. By default, std::vector and std::unordered_map
are used. See Customizing containers for detail.
toml::string is effectively the same as std::string but has an additional
flag that represents a kind of a string, string_t::basic and string_t::literal.
Although std::string is not an exact toml type, still you can get a reference
that points to internal std::string by using toml::get<std::string>() for convenience.
The most important difference between std::string and toml::string is that
toml::string will be formatted as a TOML string when outputted with ostream.
This feature is introduced to make it easy to write a custom serializer.
Datetime variants are struct that are defined in this library.
Because std::chrono::system_clock::time_point is a time point,
not capable of representing a Local Time independent from a specific day.
After TOML v1.0.0 has been released, some features are added to the main branch of the TOML spec repository. (see: CHANGELOG.md in toml-lang/toml repository).
The following list shows available "unreleased" features that can be activated
by defining a macro named TOML11_USE_UNRELEASED_FEATURES.
- Add new
\eshorthand for the escape character.
Although toml::parse allows heterogeneous arrays, constructor of toml::value
does not. Here the reason is explained.
// this won't be compiled
toml::value v{
"foo", 3.14, 42, {1,2,3,4,5}, {{"key", "value"}}
}There is a workaround for this. By explicitly converting values into
toml::value, you can initialize toml::value with a heterogeneous array.
Also, you can first initialize a toml::value with an array and then
push_back into it.
// OK!
toml::value v{
toml::value("foo"), toml::value(3.14), toml::value(42),
toml::value{1,2,3,4,5}, toml::value{{"key", "value"}}
}
// OK!
toml::value v(toml::array{});
v.push_back("foo");
v.push_back(3.14);
// OK!
toml::array a;
a.push_back("foo");
a.push_back(3.14);
toml::value v(std::move(a));The reason why the first example is not allowed is the following.
Let's assume that you are initializing a toml::value with a table.
// # expecting TOML table.
toml::value v{ // [v]
{"answer", 42}, // answer = 42
{"pi", 3.14}, // pi = 3.14
{"foo", "bar"} // foo = "bar"
};This is indistinguishable from a (heterogeneous) TOML array definition.
v = [
["answer", 42],
["pi", 3.14],
["foo", "bar"],
]This means that the above C++ code makes constructor's overload resolution ambiguous. So a constructor that allows both "table as an initializer-list" and "heterogeneous array as an initializer-list" cannot be implemented.
Thus, although it is painful, we need to explicitly cast values into
toml::value when you initialize heterogeneous array in a C++ code.
toml::value v{
toml::value("foo"), toml::value(3.14), toml::value(42),
toml::value{1,2,3,4,5}, toml::value{{"key", "value"}}
};Although toml11 is relatively new library (it's three years old now), it had some confusing and inconvenient user-interfaces because of historical reasons.
Between v2 and v3, those interfaces are rearranged.
toml::parsenow returns atoml::value, nottoml::table.toml::valueis now an alias oftoml::basic_value<discard_comment, std::vector, std::unordered_map>.- See Customizing containers for detail.
- The elements of
toml::value_tare renamed assnake_case.- See Underlying types for detail.
- Supports for the CamelCaseNames are dropped.
- See Underlying types for detail.
(is|as)_floathas been removed to make the function names consistent with others.- Since
floatis a keyword, toml11 named a float type astoml::floating. - Also a
value_tcorresponds totoml::floatingis namedvalue_t::floating. - So
(is|as)_floatingis introduced andis_floathas been removed. - See Casting a toml::value and Checking value type for detail.
- Since
- An overload of
toml::findfortoml::tablehas been dropped. Usetoml::valueversion instead.- Because type conversion between a table and a value causes ambiguity while overload resolution
- Since
toml::parsenow returns atoml::value, this feature becomes less important. - Also because
toml::tableis a normal STL container, implementing utility function is easy. - See Finding a toml::value for detail.
- An overload of
operator<<andtoml::formatfortoml::tables are dropped.- Use
toml::valueinstead. - See Serializing TOML data for detail.
- Use
- Interface around comments.
- See Preserving Comments for detail.
- An ancient
from_toml/into_tomlhas been removed. Use arbitrary type conversion support.- See Conversion between toml value and arbitrary types for detail.
Such a big change will not happen in the coming years.
After cloning this repository, run the following command (thank you @jwillikers for automating test set fetching!).
$ mkdir build
$ cd build
$ cmake .. -Dtoml11_BUILD_TEST=ON
$ make
$ make testTo run the language agnostic test suite, you need to compile
tests/check_toml_test.cpp and pass it to the tester.
I appreciate the help of the contributors who introduced the great feature to this library.
- Guillaume Fraux (@Luthaf)
- Windows support and CI on Appvayor
- Intel Compiler support
- Quentin Khan (@xaxousis)
- Found & Fixed a bug around ODR
- Improved error messages for invalid keys to show the location where the parser fails
- Petr Beneš (@wbenny)
- Fixed warnings on MSVC
- Ivan Shynkarenka (@chronoxor)
- Fixed Visual Studio 2019 warnings
- Fix compilation error in
<filesystem>with MinGW
- Khoi Dinh Trinh (@khoitd1997)
- Fixed warnings while type conversion
- @KerstinKeller
- Added installation script to CMake
- J.C. Moyer (@jcmoyer)
- Fixed an example code in the documentation
- Jt Freeman (@blockparty-sh)
- Fixed feature test macro around
localtime_s - Suppress warnings in Debug mode
- Fixed feature test macro around
- OGAWA Kenichi (@kenichiice)
- Suppress warnings on intel compiler
- Fix include path in README
- Jordan Williams (@jwillikers)
- Fixed clang range-loop-analysis warnings
- Fixed feature test macro to suppress -Wundef
- Use cache variables in CMakeLists.txt
- Automate test set fetching, update and refactor CMakeLists.txt
- Scott McCaskill
- Parse 9 digits (nanoseconds) of fractional seconds in a
local_time
- Parse 9 digits (nanoseconds) of fractional seconds in a
- Shu Wang (@halfelf)
- fix "Finding a value in an array" example in README
- @maass-tv and @SeverinLeonhardt
- Fix MSVC warning C4866
- Mohammed Alyousef (@MoAlyousef)
- Made testing optional in CMake
- Alex Merry (@amerry)
- Add missing include files
- sneakypete81 (@sneakypete81)
- Fix typo in error message
- Oliver Kahrmann (@founderio)
- Fix missing filename in error message if parsed file is empty
- Karl Nilsson (@karl-nilsson)
- Fix many spelling errors
- ohdarling88 (@ohdarling)
- Fix a bug in a constructor of serializer
- estshorter (@estshorter)
- Fix MSVC warning C26478
- Philip Top (@phlptp)
- Improve checking standard library feature availability check
- Louis Marascio (@marascio)
- Fix free-nonheap-object warning
- Axel Huebl (@ax3l)
- Make installation optional if the library is embedded
- Ken Matsui (@ken-matsui)
- Support user-defined error message prefix
- Support dynamic color mode
- Giel van Schijndel (@muggenhor)
- Remove needless copy in
parsefunction
- Remove needless copy in
- Lukáš Hrázký (@lukash)
- Add a
parse(FILE *)interface and improve file-related error messages
- Add a
- spiderman idog (@spiderman-idog)
- Fix typo in README
- Jajauma's GitHub (@Jajauma)
- Avoid possible lexer truncation warnings
- Moritz Klammler (@ctcmkl)
- Many patches in (#200) including:
- Improve CMake scripts, build process, and test file handling
- Detect error when
discard_commentsis accessed - And more.
- Chris White (@cxw42)
- Fix address-sanitizer error when parsing literal strings having invalid UTF-8 characters
- Fix function name in error messages
- offa (@offa)
- Update checkout action to v3
- Update Required CMake version
- Cleanup old CI settings
- Sergey Vidyuk (@VestniK)
- Fix for case when vector iterator is raw pointer
- Kfir Gollan (@kfirgollan)
- Add installation example with checkinstall and cmake
- Martin Tournoij (@arp242)
- Escape control characters in keys
- @DavidKorczynski
- Add fuzzing test based on ClusterFuzzLite
- Esonhugh Skyworship (@Esonhugh)
- Fix function signature of
strerror_ron macos
- Fix function signature of
This product is licensed under the terms of the MIT License.
- Copyright (c) 2017-2024 Toru Niina
All rights reserved.
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