qgis.cpp File Reference

#include "qgis.h"
#include "qgsversion.h"
#include <QCoreApplication>
#include <QColor>
#include <QDate>
#include <QTime>
#include <QLocale>
#include <QDateTime>
#include "qgsconfig.h"
#include "qgslogger.h"
#include "qgswkbtypes.h"
#include <gdal.h>
#include <ogr_api.h>

Include dependency graph for qgis.cpp:

Go to the source code of this file.

Functions
void *	qgsCalloc (size_t nmemb, size_t size)
	Allocates memory for an array of nmemb elements of size bytes each and returns a pointer to the allocated memory. More...
void	qgsFree (void *ptr)
	Frees the memory space pointed to by ptr. More...
void *	qgsMalloc (size_t size)
	Allocates size bytes and returns a pointer to the allocated memory. More...
double	qgsPermissiveToDouble (QString string, bool &ok)
	Converts a string to a double in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators. More...
int	qgsPermissiveToInt (QString string, bool &ok)
	Converts a string to an integer in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators. More...
qlonglong	qgsPermissiveToLongLong (QString string, bool &ok)
	Converts a string to an qlonglong in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators. More...
bool	qgsVariantEqual (const QVariant &lhs, const QVariant &rhs)
	Compares two QVariant values and returns whether they are equal, two NULL values are always treated as equal and 0 is not treated as equal with NULL. More...
bool	qgsVariantGreaterThan (const QVariant &lhs, const QVariant &rhs)
	Compares two QVariant values and returns whether the first is greater than the second. More...
bool	qgsVariantLessThan (const QVariant &lhs, const QVariant &rhs)
	Compares two QVariant values and returns whether the first is less than the second. More...
QString	qgsVsiPrefix (const QString &path)
uint	qHash (const QVariant &variant)
	Hash for QVariant. More...
template<>
bool	qMapLessThanKey< QVariantList > (const QVariantList &key1, const QVariantList &key2)
	Compares two QVariantList values and returns whether the first is less than the second. More...

Function Documentation

qgsCalloc()

void* qgsCalloc	(	size_t	nmemb,
		size_t	size
	)

Allocates memory for an array of nmemb elements of size bytes each and returns a pointer to the allocated memory.

Works like C calloc() but prints debug message by QgsLogger if allocation fails.

Parameters

nmemb	number of elements
size	size of element in bytes

Definition at line 101 of file qgis.cpp.

qgsFree()

void qgsFree

(

void *

ptr

)

Frees the memory space pointed to by ptr.

Works like C free().

Parameters

ptr	pointer to memory space

Definition at line 116 of file qgis.cpp.

qgsMalloc()

void* qgsMalloc

(

size_t

size

)

Allocates size bytes and returns a pointer to the allocated memory.

Works like C malloc() but prints debug message by QgsLogger if allocation fails.

Parameters

size	size in bytes

Definition at line 86 of file qgis.cpp.

qgsPermissiveToDouble()

double qgsPermissiveToDouble	(	QString	string,
		bool &	ok
	)

Converts a string to a double in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators.

Parameters

string	string to convert
ok	will be set to true if conversion was successful

Returns

string converted to double if possible

See also

permissiveToInt

Since

QGIS 2.9

Definition at line 65 of file qgis.cpp.

qgsPermissiveToInt()

int qgsPermissiveToInt	(	QString	string,
		bool &	ok
	)

Converts a string to an integer in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators.

Parameters

string	string to convert
ok	will be set to true if conversion was successful

Returns

string converted to int if possible

See also

permissiveToDouble

Since

QGIS 2.9

Definition at line 72 of file qgis.cpp.

qgsPermissiveToLongLong()

qlonglong qgsPermissiveToLongLong	(	QString	string,
		bool &	ok
	)

Converts a string to an qlonglong in a permissive way, e.g., allowing for incorrect numbers of digits between thousand separators.

Parameters

string	string to convert
ok	will be set to true if conversion was successful

Returns

string converted to int if possible

See also

permissiveToInt

Since

QGIS 3.4

Definition at line 79 of file qgis.cpp.

qgsVariantEqual()

bool qgsVariantEqual	(	const QVariant &	lhs,
		const QVariant &	rhs
	)

Compares two QVariant values and returns whether they are equal, two NULL values are always treated as equal and 0 is not treated as equal with NULL.

Parameters

lhs	first value
rhs	second value

Returns

true if values are equal

Definition at line 265 of file qgis.cpp.

qgsVariantGreaterThan()

bool qgsVariantGreaterThan	(	const QVariant &	lhs,
		const QVariant &	rhs
	)

Compares two QVariant values and returns whether the first is greater than the second.

Useful for sorting lists of variants, correctly handling sorting of the various QVariant data types (such as strings, numeric values, dates and times)

See also

qgsVariantLessThan()

Definition at line 189 of file qgis.cpp.

qgsVariantLessThan()

bool qgsVariantLessThan	(	const QVariant &	lhs,
		const QVariant &	rhs
	)

Compares two QVariant values and returns whether the first is less than the second.

Useful for sorting lists of variants, correctly handling sorting of the various QVariant data types (such as strings, numeric values, dates and times)

Invalid < NULL < Values

See also

qgsVariantGreaterThan()

Definition at line 121 of file qgis.cpp.

qgsVsiPrefix()

QString qgsVsiPrefix

(

const QString &

path

)

Definition at line 194 of file qgis.cpp.

qHash()

uint qHash

(

const QVariant &

variant

)

Hash for QVariant.

Definition at line 219 of file qgis.cpp.

qMapLessThanKey< QVariantList >()

template<>

bool qMapLessThanKey< QVariantList >	(	const QVariantList &	key1,
		const QVariantList &	key2
	)

Compares two QVariantList values and returns whether the first is less than the second.

Definition at line 299 of file qgis.cpp.