CUtils.h File Reference

This module offers C++ utility functions. More...

#include "Config.h"

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Macros
#define	CMSQ2MMSQ   1.0e2
	cm^2 -> mm^2 More...
#define	ERG2KEV   6.242e8
	erg -> keV More...
#define	KEV2J   1.602176634e-16
	keV -> J (SI) More...
#define	LN10   2.30258509299404590109361379290930926799774169921875
	log(10) More...
#define	LN2   0.6931471805599453094172321214581766
	log_e 2 More...
#define	MM2M   1.0e-3
	mm -> m More...
#define	PI   3.141592653589793115997963468544185161590576171875
	pi More...
#define	PIOVERTWO   1.5707963267948965579989817342720925807952880859375
	pi/2 More...
#define	S2MS   1.0e3
	s -> ms More...
#define	SQRT2   1.4142135623730951454746218587388284504413604736328125
	sqrt(2) More...
#define	SQRT2PI   2.506628274631000241612355239340104162693023681640625
	sqrt(2pi) More...
#define	TWOPI   6.28318530717958623199592693708837032318115234375
	2pi More...

Functions
string	GetDirectoryFromFilePath (const string aFilePath)
	Returns the directory from the file path. More...
string	GetFileNameFromPath (const string aFilePath)
	Returns the file name given the file path. More...
unsigned int	GetGcd (unsigned int aN1, unsigned int aN2)
	Returns the greater common divisor between 2 numbers. More...
vector< string >	Glob (const char *aPattern)
	C utility to extract a list of files from a given file pattern. More...
bool	IsDirectory (const string aDirPath)
	Checks if a directory exists. More...
bool	IsFile (const string aFileName)
	Checks if a file exists. More...
bool	IsPowerOfTwo (const unsigned int aN)
	Tests whether an integer is a power of 2. More...
int	NextPowerOfTwo (const double aX)
	Returns the next power of 2. More...
string	ReplaceAll (string aStr, const string &aFrom, const string &aTo)
	Replaces all occurences of a sub-string by another sub-string. More...
vector< string >	SplitString (const string aStringToSplit, const char aSeparator)
	Splits a string. More...

Detailed Description

This module offers C++ utility functions.

Authors

Florent Robinet, flore.nosp@m.nt.r.nosp@m.obine.nosp@m.t@ij.nosp@m.clab..nosp@m.in2p.nosp@m.3.fr

Macro Definition Documentation

CMSQ2MMSQ

#define CMSQ2MMSQ   1.0e2

cm^2 -> mm^2

ERG2KEV

#define ERG2KEV   6.242e8

erg -> keV

KEV2J

#define KEV2J   1.602176634e-16

keV -> J (SI)

LN10

#define LN10   2.30258509299404590109361379290930926799774169921875

log(10)

LN2

#define LN2   0.6931471805599453094172321214581766

log_e 2

MM2M

#define MM2M   1.0e-3

mm -> m

PI

#define PI   3.141592653589793115997963468544185161590576171875

pi

PIOVERTWO

#define PIOVERTWO   1.5707963267948965579989817342720925807952880859375

pi/2

S2MS

#define S2MS   1.0e3

s -> ms

SQRT2

#define SQRT2   1.4142135623730951454746218587388284504413604736328125

sqrt(2)

SQRT2PI

#define SQRT2PI   2.506628274631000241612355239340104162693023681640625

sqrt(2pi)

TWOPI

#define TWOPI   6.28318530717958623199592693708837032318115234375

2pi

Function Documentation

GetDirectoryFromFilePath()

string GetDirectoryFromFilePath

(

const string

aFilePath

)

Returns the directory from the file path.

Parameters

[in]

aFilePath

File path.

GetFileNameFromPath()

string GetFileNameFromPath ( const string  aFilePath )

inline

Returns the file name given the file path.

For example "myprog.exe" is returned from:

• the full path "/usr/bin/myprog.exe"
• the relative path "./bin/myprog.exe"

Parameters

[in]

aFilePath

file path

Returns

The file name with path.

GetGcd()

unsigned int GetGcd	(	unsigned int	aN1,
		unsigned int	aN2
	)

Returns the greater common divisor between 2 numbers.

Parameters

[in]	aN1	First number.
[in]	aN2	Second number.

Glob()

vector<string> Glob

(

const char *

aPattern

)

C utility to extract a list of files from a given file pattern.

Returns

a list of files matching a pattern.

Parameters

[in]

aPattern

File pattern to match.

IsDirectory()

bool IsDirectory

(

const string

aDirPath

)

Checks if a directory exists.

Returns

true if the directory path exists.

Parameters

[in]

aDirPath

Path to the directory to test.

IsFile()

bool IsFile

(

const string

aFileName

)

Checks if a file exists.

Returns

true if the input file exists, false otherwise.

Parameters

[in]

aFileName

Path to the file to test.

IsPowerOfTwo()

bool IsPowerOfTwo ( const unsigned int  aN )

inline

Tests whether an integer is a power of 2.

Parameters

[in]

aN

Integer to test.

Returns

true if the integer is a power of 2, false otherwise.

NextPowerOfTwo()

int NextPowerOfTwo ( const double  aX )

inline

Returns the next power of 2.

Parameters

[in]

aX

number to consider.

Returns

The power of 2 next to the given number.

ReplaceAll()

string ReplaceAll	(	string	aStr,
		const string &	aFrom,
		const string &	aTo
	)

Replaces all occurences of a sub-string by another sub-string.

All occurences of sub-string 'aFrom' are replaced by 'aTo'.

Returns

The modified string.

Parameters

aStr	String to modify.
aFrom	Substring to replace from.
aTo	Substring to replace to.

SplitString()

vector<string> SplitString	(	const string	aStringToSplit,
		const char	aSeparator
	)

Splits a string.

A string is divided into a vector of sub-strings. The separator defines where to break the input string. The separator must be a single character.

Returns

A vector of string, excluding the separator

Parameters

[in]	aStringToSplit	String to divide.
[in]	aSeparator	Separator.