[F] Fix incorrect behaviour in case of using standard iostream manipulators with fort::table.
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@ -1,5 +1,9 @@
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## v0.4.1
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### Bug fixes
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- Fix incorrect behaviour in case of using standard iostream manipulators with fort::table.
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### Internal
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- Add alias `libfort::fort` for `fort` target that can be used via `add_subdirectory` in cmake.
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42
lib/fort.hpp
42
lib/fort.hpp
@ -34,9 +34,11 @@ SOFTWARE.
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#ifndef LIBFORT_HPP
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#define LIBFORT_HPP
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#include <iomanip>
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#include <sstream>
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#include <string>
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#include <stdexcept>
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#include <sstream>
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#include <type_traits>
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#include "fort.h"
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@ -150,6 +152,41 @@ const table_manipulator endr(1);
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*/
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const table_manipulator separator(2);
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// Utility functions for internal library usage.
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namespace detail
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{
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template <typename T>
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constexpr bool is_stream_manipulator_impl() noexcept
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{
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using Tdec = typename std::decay<T>::type;
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// Manipulators for integral types
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return std::is_same<Tdec, typename std::decay<decltype(std::dec)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::hex)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::oct)>::type>::value
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// Floating-point manipulators
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|| std::is_same<Tdec, typename std::decay<decltype(std::fixed)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::scientific)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::hexfloat)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::defaultfloat)>::type>::value
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// Misc
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|| std::is_same<Tdec, typename std::decay<decltype(std::setbase(0))>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::setfill('\0'))>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::setprecision(0))>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::setw(0))>::type>::value;
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}
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}
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/**
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* Utility function that is used internally by the library to check if argument
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* passed to operator<< is a manipulator. In case default behaviour is not
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* enough write custom specialization of this function.
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*/
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template <typename T>
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constexpr bool is_stream_manipulator() noexcept
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{
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return detail::is_stream_manipulator_impl<T>();
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}
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/**
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* Property owner.
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*
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@ -534,8 +571,9 @@ public:
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template <typename T>
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table &operator<<(const T &arg)
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{
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constexpr bool is_manip = fort::is_stream_manipulator<typename std::decay<T>::type>();
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stream_ << arg;
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if (stream_.tellp() >= 0) {
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if (stream_.tellp() >= 0 && !is_manip) {
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#ifdef FT_HAVE_UTF8
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if (TT == table_type::character) {
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ft_nwrite(table_, 1, stream_.str().c_str());
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42
src/fort.hpp
42
src/fort.hpp
@ -34,9 +34,11 @@ SOFTWARE.
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#ifndef LIBFORT_HPP
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#define LIBFORT_HPP
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#include <iomanip>
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#include <sstream>
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#include <string>
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#include <stdexcept>
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#include <sstream>
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#include <type_traits>
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#include "fort.h"
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@ -150,6 +152,41 @@ const table_manipulator endr(1);
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*/
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const table_manipulator separator(2);
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// Utility functions for internal library usage.
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namespace detail
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{
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template <typename T>
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constexpr bool is_stream_manipulator_impl() noexcept
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{
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using Tdec = typename std::decay<T>::type;
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// Manipulators for integral types
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return std::is_same<Tdec, typename std::decay<decltype(std::dec)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::hex)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::oct)>::type>::value
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// Floating-point manipulators
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|| std::is_same<Tdec, typename std::decay<decltype(std::fixed)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::scientific)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::hexfloat)>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::defaultfloat)>::type>::value
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// Misc
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|| std::is_same<Tdec, typename std::decay<decltype(std::setbase(0))>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::setfill('\0'))>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::setprecision(0))>::type>::value
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|| std::is_same<Tdec, typename std::decay<decltype(std::setw(0))>::type>::value;
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}
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}
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/**
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* Utility function that is used internally by the library to check if argument
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* passed to operator<< is a manipulator. In case default behaviour is not
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* enough write custom specialization of this function.
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*/
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template <typename T>
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constexpr bool is_stream_manipulator() noexcept
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{
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return detail::is_stream_manipulator_impl<T>();
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}
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/**
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* Property owner.
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*
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@ -534,8 +571,9 @@ public:
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template <typename T>
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table &operator<<(const T &arg)
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{
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constexpr bool is_manip = fort::is_stream_manipulator<typename std::decay<T>::type>();
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stream_ << arg;
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if (stream_.tellp() >= 0) {
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if (stream_.tellp() >= 0 && !is_manip) {
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#ifdef FT_HAVE_UTF8
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if (TT == table_type::character) {
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ft_nwrite(table_, 1, stream_.str().c_str());
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@ -2,6 +2,16 @@
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#include "fort.hpp"
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#include "test_utils.hpp"
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namespace fort
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{
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// Write custom specialisation for testing purposes.
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using setw_type = typename std::decay<decltype(std::setw(0))>::type;
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template <>
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constexpr bool is_stream_manipulator<setw_type>() noexcept
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{
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return false;
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}
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}
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void test_cpp_bug_fixes(void)
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{
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@ -97,6 +107,40 @@ void test_cpp_bug_fixes(void)
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"+------+------+--------------------------------+\n";
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assert_string_equal(table_str, table_str_etalon);
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}
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SCENARIO("Issue 49 - https://github.com/seleznevae/libfort/issues/49") {
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{
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fort::char_table table;
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table << std::setprecision(5) << 3.14 << std::hex << 256 << fort::endr
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<< std::fixed << std::setprecision(2) << 11.1234567;
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std::string table_str = table.to_string();
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std::string table_str_etalon =
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"+-------+-----+\n"
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"| | |\n"
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"| 3.14 | 100 |\n"
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"| | |\n"
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"+-------+-----+\n"
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"| | |\n"
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"| 11.12 | |\n"
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"| | |\n"
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"+-------+-----+\n";
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assert_string_equal(table_str, table_str_etalon);
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}
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{
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fort::char_table table;
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table << std::setw(15) << 3.14000001;
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std::string table_str = table.to_string();
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std::string table_str_etalon =
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"+--+-----------------+\n"
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"| | |\n"
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"| | 3.14 |\n"
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"| | |\n"
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"+--+-----------------+\n";
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assert_string_equal(table_str, table_str_etalon);
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}
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}
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}
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void test_cpp_table_basic(void)
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