string_consumer.hpp File Reference

Parse strings. More...

#include <charconv>
#include "format.hpp"

Go to the source code of this file.

Data Structures
class	StringConsumer
	Parse data from a string / buffer. More...

Functions
template<class T = uint32_t>
static std::optional< T >	ParseInteger (std::string_view arg, int base=10, bool clamp=false)
	Change a string into its number representation.

Detailed Description

Parse strings.

Definition in file string_consumer.hpp.

Function Documentation

ParseInteger()

template<class T = uint32_t>

static std::optional< T > ParseInteger ( std::string_view  arg, int  base = 10, bool  clamp = false  )

inlinestatic

Change a string into its number representation.

Supports decimal and hexadecimal numbers. Accepts leading and trailing whitespace. Trailing junk is an error.

Parameters

arg	The string to be converted.
base	The base for parsing the number, defaults to only decimal numbers. Use 0 to also allow hexadecimal.
clamp	If the value is a valid number, but out of range for T, return the maximum representable value. Negative values for unsigned results are still treated as invalid.

Returns

The number, or std::nullopt if it could not be parsed.

Definition at line 917 of file string_consumer.hpp.

References StringConsumer::SkipUntilCharNotIn(), and StringConsumer::WHITESPACE_NO_NEWLINE.

Referenced by ConScrollToTile(), SelectCompanyManagerFaceWindow::OnQueryTextFinished(), IndustryViewWindow::OnQueryTextFinished(), SpriteAlignerWindow::OnQueryTextFinished(), OrdersWindow::OnQueryTextFinished(), CustomCurrencyWindow::OnQueryTextFinished(), ScenarioEditorToolbarWindow::OnQueryTextFinished(), FoundTownWindow::OnQueryTextFinished(), openttd_main(), and ParseType().