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ipe::String Class Reference
Ipe Base

#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
 
String & operator= (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
 
void appendUtf8 (uint16_t 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() [1/5]

String::String ( )
noexcept

Construct an empty string.

◆ String() [2/5]

String::String ( const char *  str)
noexcept

Construct a string by making copy of str.

◆ String() [3/5]

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

Construct string by making copy of str with given len.

◆ String() [4/5]

String::String ( const String &  rhs)
noexcept

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

◆ String() [5/5]

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::~String ( )
noexcept

Destruct string if reference count has reached zero.

Member Function Documentation

◆ operator=()

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

Assignment takes constant time.

◆ withData()

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

Construct string by taking ownership of given data.

◆ operator[]()

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

Return character at index i.

◆ empty()

bool ipe::String::empty ( ) const
inlinenoexcept

Is the string empty?

References ipe::size().

Referenced by ipe::Latex::addPageNumber(), ipe::PdfWriter::createBookmarks(), ipe::Latex::createLatexSource(), ipe::PdfWriter::createNamedDests(), ipe::PdfWriter::createPageView(), ipe::PdfWriter::createTrailer(), ipe::Document::findPage(), ipe::Page::findView(), ipe::Attribute::makeColor(), ipe::Attribute::makeDashStyle(), ipe::Attribute::makeScalar(), ipe::Attribute::makeTextSize(), ipe::Object::Object(), ipe::XmlParser::parseAttributes(), ipe::ImlParser::parseObject(), ipe::ImlParser::parsePage(), ipe::ImlParser::parseStyle(), ipe::ImlParser::parseView(), ipe::Platform::runLatex(), ipe::Document::runLatexAsync(), ipe::Page::saveAsXml(), ipe::StyleSheet::saveAsXml(), ipe::Document::saveAsXml(), ipe::Group::saveAsXml(), ipe::Object::saveAttributesAsXml(), and ipe::Repository::toIndex().

◆ data()

const char* ipe::String::data ( ) const
inlinenoexcept

Return read-only pointer to the data.

Referenced by ipe::Bitmap::Bitmap(), ipe::PdfWriter::createPageView(), ipe::PdfWriter::createXmlStream(), ipe::Platform::fileExists(), ipe::PdfDict::inflate(), ipe::Platform::listDirectory(), ipe::PdfWriter::PdfWriter(), ipe::Bitmap::readJpeg(), ipe::Platform::realPath(), ipe::Platform::runLatex(), and z().

◆ size()

int ipe::String::size ( ) const
inlinenoexcept

Return number of bytes in the string.

Referenced by ipe::Bitmap::Bitmap(), ipe::PdfDict::count(), ipe::Latex::createLatexSource(), ipe::PdfWriter::createPageView(), ipe::PdfWriter::createXmlStream(), ipe::CairoPainter::doDrawText(), ipe::Document::formatFromFilename(), ipe::Lex::getFixed(), ipe::PdfDict::inflate(), ipe::Platform::ipeDrive(), ipe::Platform::latexDirectory(), ipe::XmlParser::parsePCDATA(), ipe::XmlParser::parseToTag(), ipe::PdfWriter::PdfWriter(), ipe::Stream::putString(), ipe::FileStream::putString(), ipe::Stream::putXmlString(), ipe::Bitmap::readJpeg(), ipe::Platform::runLatex(), ipe::Document::saveAsXml(), ipe::Path::saveAsXml(), ipe::StringStream::tell(), and ipe::Text::Text().

◆ operator+=() [1/3]

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

Operator syntax for append.

◆ operator+=() [2/3]

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

Operator syntax for append.

◆ operator+=() [3/3]

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

Operator syntax for append.

◆ substr()

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

Create substring.

Referenced by ipe::Latex::createLatexSource(), ipe::PdfWriter::createPageView(), ipe::Painter::dashStyle(), ipe::Document::fileFormat(), ipe::Lex::getFixed(), ipe::PdfParser::getObject(), ipe::Platform::latexDirectory(), ipe::Platform::latexPath(), ipe::Lex::nextToken(), ipe::PdfFile::parse(), ipe::Platform::runLatex(), ipe::Document::runLatexAsync(), ipe::StyleSheet::saveAsXml(), ipe::Path::saveAsXml(), and ipe::Text::Text().

◆ left()

String ipe::String::left ( int  i) const
inlinenoexcept

Create substring at the left.

Referenced by ipe::PdfWriter::createPageView(), ipe::CairoPainter::doDrawText(), ipe::Platform::ipeDrive(), ipe::Platform::latexDirectory(), ipe::Platform::latexPath(), ipe::Platform::realPath(), and ipe::Platform::runLatex().

◆ right()

String String::right ( int  i) const
noexcept

Create substring at the right.

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

References ipe::size().

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

◆ operator!=() [1/2]

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

Operator !=.

◆ operator!=() [2/2]

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

Operator !=.

◆ find() [1/2]

int String::find ( char  ch) const
noexcept

Return index of first occurrence of ch.

Return -1 if character does not appear.

References ipe::size().

Referenced by ipe::Painter::dashStyle(), ipe::CairoPainter::doDrawText(), ipe::Reference::flagsFromName(), ipe::PdfFile::parse(), ipe::Document::runLatexAsync(), and ipe::StyleSheet::saveAsXml().

◆ rfind()

int String::rfind ( char  ch) const
noexcept

Return index of last occurrence of ch.

Return -1 if character does not appear.

References ipe::size().

◆ find() [2/2]

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

Return index of first occurrence of rhs.

Return -1 if not substring is not present.

References ipe::size().

◆ erase()

void String::erase ( )
noexcept

Make string empty.

Referenced by ipe::PdfParser::getToken().

◆ append() [1/3]

void String::append ( const String &  rhs)
noexcept

Append rhs to this string.

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

◆ append() [2/3]

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

Append rhs to this string.

◆ append() [3/3]

void String::append ( char  ch)
noexcept

Append ch to this string.

◆ appendUtf8()

void String::appendUtf8 ( uint16_t  ch)
noexcept

Append a single unicode character ch in UTF-8 encoding.

Referenced by ipe::PdfString::decode().

◆ hasPrefix()

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

Does string start with this prefix? (bytewise comparison)

References ipe::size().

Referenced by ipe::PdfString::decode(), ipe::Attribute::isMidArrow(), and ipe::Document::runLatexAsync().

◆ operator==() [1/2]

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

Equality operator (bytewise comparison).

References ipe::size().

◆ operator==() [2/2]

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

Equality operator (bytewise comparison).

References ipe::size().

◆ operator<()

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

Inequality operator (bytewise comparison).

References ipe::size().

◆ operator+()

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

Concatenate this string with rhs.

References append().

◆ unicode()

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.

◆ getLine()

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

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

References ipe::size().

◆ z()

const char * String::z ( ) const
noexcept

Return a C style string with final zero byte.

References data().

Referenced by ipe::PdfResources::collect(), ipe::CairoPainter::doDrawText(), ipe::Face::Face(), ipe::Platform::fileExists(), ipe::Lex::getFixed(), ipe::Lex::getHexNumber(), ipe::Lex::getInt(), ipe::Platform::latexDirectory(), ipe::Platform::listDirectory(), ipe::QIpe(), ipe::Platform::readFile(), ipe::Platform::realPath(), ipe::Platform::runLatex(), ipe::Document::runLatexAsync(), ipe::PdfResources::show(), ipe::Platform::toDouble(), ipe::Platform::toNumber(), and ipe::Face::~Face().

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