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ipe::String Class Reference

#include <ipebase.h>

Public Member Functions

 String () noexcept
 
 String (const char *str) noexcept
 
 String (const char *str, int len) noexcept
 
 String (const String &rhs) noexcept
 
 String (const String &rhs, int index, int len) noexcept
 
Stringoperator= (const String &rhs) noexcept
 
 ~String () noexcept
 
char operator[] (int i) const noexcept
 
bool empty () const noexcept
 
const char * data () const noexcept
 
int size () const noexcept
 
void operator+= (const String &rhs) noexcept
 
void operator+= (const char *rhs) noexcept
 
void operator+= (char ch) noexcept
 
String substr (int i, int len=-1) const noexcept
 
String left (int i) const noexcept
 
String right (int i) const noexcept
 
bool operator!= (const String &rhs) const noexcept
 
bool operator!= (const char *rhs) const noexcept
 
int find (char ch) const noexcept
 
int rfind (char ch) const noexcept
 
int find (const char *rhs) const noexcept
 
void erase () noexcept
 
void append (const String &rhs) noexcept
 
void append (const char *rhs) noexcept
 
void append (char ch) noexcept
 
bool hasPrefix (const char *rhs) const noexcept
 
bool operator== (const String &rhs) const noexcept
 
bool operator== (const char *rhs) const noexcept
 
bool operator< (const String &rhs) const noexcept
 
String operator+ (const String &rhs) const noexcept
 
int unicode (int &index) const noexcept
 
String getLine (int &index) const noexcept
 
const char * z () const noexcept
 

Static Public Member Functions

static String withData (char *data, int len=0) noexcept
 

Detailed Description

Strings and buffers.

String is is an implicitly shared byte string. It is designed to be efficient for strings of arbitrary length, and supposed to be passed by value (the size of String is a single pointer). Sharing is implicit—the string creates its own representation as soon as it is modified.

String can be used for binary data. For text, it is usually assumed that the string is UTF-8 encoded, but only the unicode member function actually requires this. In particular, all indices into the string are byte indices, not Unicode character indices.

Constructor & Destructor Documentation

String::String ( )
noexcept

Construct an empty string.

Referenced by right(), and ipe::Platform::runLatex().

String::String ( const char *  str)
noexcept

Construct a string by making copy of str.

String::String ( const char *  str,
int  len 
)
noexcept

Construct string by making copy of str with given len.

String::String ( const String rhs)
noexcept

Copy constructor. This only copies the reference and takes constant time.

String::String ( const String rhs,
int  index,
int  len 
)
noexcept

Construct a substring.

index must be >= 0. len can be negative or too large to return entire string.

String::~String ( )
noexcept

Destruct string if reference count has reached zero.

Member Function Documentation

String & String::operator= ( const String rhs)
noexcept

Assignment takes constant time.

String String::withData ( char *  data,
int  len = 0 
)
staticnoexcept

Construct string by taking ownership of given data.

References data().

char ipe::String::operator[] ( int  i) const
inlinenoexcept

Return character at index i.

bool ipe::String::empty ( ) const
inlinenoexcept
const char* ipe::String::data ( ) const
inlinenoexcept
int ipe::String::size ( ) const
inlinenoexcept
void ipe::String::operator+= ( const String rhs)
inlinenoexcept

Operator syntax for append.

void ipe::String::operator+= ( const char *  rhs)
inlinenoexcept

Operator syntax for append.

void ipe::String::operator+= ( char  ch)
inlinenoexcept

Operator syntax for append.

String ipe::String::substr ( int  i,
int  len = -1 
) const
inlinenoexcept
String ipe::String::left ( int  i) const
inlinenoexcept
String String::right ( int  i) const
noexcept

Create substring at the right.

Returns the entire string if i is larger than its length.

References size(), and String().

Referenced by ipe::Document::formatFromFilename(), and ipe::Platform::latexDirectory().

bool ipe::String::operator!= ( const String rhs) const
inlinenoexcept

Operator !=.

bool ipe::String::operator!= ( const char *  rhs) const
inlinenoexcept

Operator !=.

int String::find ( char  ch) const
noexcept

Return index of first occurrence of ch.

Return -1 if character does not appear.

References size().

Referenced by ipe::PdfWriter::createTrailer(), ipe::Painter::dashStyle(), ipe::CairoPainter::doDrawText(), ipe::Reference::flagsFromName(), ipe::Document::runLatex(), and ipe::StyleSheet::saveAsXml().

int String::rfind ( char  ch) const
noexcept

Return index of last occurrence of ch.

Return -1 if character does not appear.

References size().

Referenced by ipe::Platform::currentDirectory(), and ipe::Reference::flagsFromName().

int String::find ( const char *  rhs) const
noexcept

Return index of first occurrence of rhs.

Return -1 if not substring is not present.

References size().

void String::erase ( )
noexcept

Make string empty.

void String::append ( const String rhs)
noexcept

Append rhs to this string.

Referenced by operator+(), and ipe::Platform::readFile().

void String::append ( const char *  rhs)
noexcept

Append rhs to this string.

void String::append ( char  ch)
noexcept

Append ch to this string.

bool String::hasPrefix ( const char *  rhs) const
noexcept

Does string start with this prefix? (bytewise comparison)

References size().

bool String::operator== ( const String rhs) const
noexcept

Equality operator (bytewise comparison).

References size().

bool String::operator== ( const char *  rhs) const
noexcept

Equality operator (bytewise comparison).

References size().

bool String::operator< ( const String rhs) const
noexcept

Inequality operator (bytewise comparison).

References size().

String String::operator+ ( const String rhs) const
noexcept

Concatenate this string with rhs.

References append().

int String::unicode ( int &  index) const
noexcept

Return Unicode value from UTF-8 string.

The index is incremented to the next UTF-8 character. This returns 0xfffd if there is any problem in parsing UTF-8.

References ipe::Fixed::fromInternal(), and ipe::Fixed::mult().

Referenced by ipe::PdfWriter::createXmlStream().

String String::getLine ( int &  index) const
noexcept

Return line starting at position index. Index is updated to point to next line.

References size(), and substr().

Referenced by ipe::Platform::libVersion().

const char * String::z ( ) const
noexcept

The documentation for this class was generated from the following files: