utils::text Namespace Reference

Table of Contents

• Namespaces
• Functions
• Variables
• Detailed Description
• Function Documentation
• IsPrintable()
• RemoveQuotes()
• Split()
• SplitIntoStringViewVector()
• Variable Documentation
• kEnLocale

Text utilities. More...

Namespaces
namespace	utf8
	UTF8 text utilities.

Functions
std::string	Trim (const std::string &str)
	Return trimmed copy of string.
std::string	Trim (std::string &&str)
	Trim string in-place.
std::vector< std::string >	Split (std::string_view str, std::string_view separators)
std::vector< std::string_view >	SplitIntoStringViewVector (std::string_view str, std::string_view separators)
std::string	Join (const std::vector< std::string > &strs, std::string_view sep)
	Join string.
std::string	Format (double value, const std::string &locale, int ndigits=0, bool is_fixed=true)
	Return number formatted with specified locale.
std::string	Format (double value, int ndigits)
	Return number formatted.
std::string	Format (boost::multiprecision::cpp_dec_float_50 value, int ndigits)
	Return cpp_dec_float_50 formatted.
bool	StartsWith (std::string_view hay, std::string_view needle) noexcept
	Return true if hay starts with needle, false otherwise.
bool	EndsWith (std::string_view hay, std::string_view needle) noexcept
	Return true if hay ends with needle, false otherwise.
std::string	ToLower (std::string_view str, const std::string &locale=kEnLocale)
	Transform letters to lower case.
std::string	Capitalize (std::string_view str, const std::string &locale)
	Capitalizes the first letter of the str.
std::string	RemoveQuotes (std::string_view str)
bool	IsAscii (char ch) noexcept
	Checks whether the character is an ASCII character.
bool	IsAsciiSpace (char ch) noexcept
	Checks whether the character is a whitespace character in C locale.
bool	IsAscii (std::string_view text) noexcept
	Checks if text contains only ASCII characters.
const std::locale &	GetLocale (const std::string &name)
	Returns a locale with the specified name.
bool	IsUtf8 (std::string_view text) noexcept
	Checks if text is in utf-8 encoding.
bool	IsPrintable (std::string_view text, bool ascii_only=true) noexcept
bool	IsCString (std::string_view text) noexcept
	Checks if there are no embedded null ('\0') characters in text.
std::string	CamelCaseToSnake (std::string_view camel)
	convert CamelCase to snake_case(underscore)

Variables
const std::string	kEnLocale {"en_US.UTF-8"}

Detailed Description

Text utilities.

Function Documentation

IsPrintable()

bool utils::text::IsPrintable ( std::string_view  text, bool  ascii_only = true  )

noexcept

Checks text on matching to the following conditions:

1. text is in utf-8 encoding
2. text does not contain any of control ascii characters
3. if flag ascii is true than text contains only ascii characters

RemoveQuotes()

std::string utils::text::RemoveQuotes

(

std::string_view

str

)

Removes double quotes from front and back of string.

Examples:

RemoveQuotes("\"test\"")      // returns "test"
RemoveQuotes("\"test")        // returns "\"test"
RemoveQuotes("'test'")        // returns "'test'"
RemoveQuotes("\"\"test\"\"")  // returns "\"test\""

Split()

std::vector< std::string > utils::text::Split	(	std::string_view	str,
		std::string_view	separators
	)

Split string by separators

    std::string input = "1,22#333";
    auto tokens = utils::text::Split(input, "#,");
    ASSERT_EQ(tokens.size(), 3);
    EXPECT_EQ(tokens[0], "1");
    EXPECT_EQ(tokens[1], "22");
    EXPECT_EQ(tokens[2], "333");

SplitIntoStringViewVector()

std::vector< std::string_view > utils::text::SplitIntoStringViewVector	(	std::string_view	str,
		std::string_view	separators
	)

Split string by separators and return a non-owning container of chunks.

Warning

Initial str should outlive the result of the function

    std::string input = "1,22#333";
    std::vector<std::string_view> tokens =
        utils::text::SplitIntoStringViewVector(input, "#,");
    ASSERT_EQ(tokens.size(), 3);
    EXPECT_EQ(tokens[0], "1");
    EXPECT_EQ(tokens[1], "22");
    EXPECT_EQ(tokens[2], "333");

Variable Documentation

kEnLocale

const std::string utils::text::kEnLocale {"en_US.UTF-8"}

inline

Definition at line 18 of file text.hpp.