pistring.h File Reference

String class. More...

#include "pibytearray.h"
#include "piconstchars.h"

Classes
class	PIString
	String class. More...

Functions
PIString	operator+ (const PIString &str, const PIString &f)
	Returns concatenated string.
PIString	operator+ (const PIString &f, const char *str)
	Returns concatenated string.
PIString	operator+ (const char *str, const PIString &f)
	Returns concatenated string.
PIString	operator+ (const char c, const PIString &f)
	Returns concatenated string.
PIString	operator+ (const PIString &f, const char c)
	Returns concatenated string.
int	versionCompare (const PIString &v0, const PIString &v1, int components=6)
	Compare two version strings in free notation and returns 0, -1 or 1. More...
PIString	versionNormalize (const PIString &v)
	Converts version string in free notation to classic view. More...
template<typename T >
PIString	piStringify (const T &v)
	Returns string representation of "v", using PICout operator<<(T)

Variables
return	s
	Store operator.
v	changed_ = true
	Restore operator.

Detailed Description

String class.

Function Documentation

versionCompare()

int versionCompare	(	const PIString &	v0,
		const PIString &	v1,
		int	components = 6
	)

Compare two version strings in free notation and returns 0, -1 or 1.

This function parse version to number codes and labels. Then it compare no more than "components" codes. If there is no difference, compare labels. Each label has corresponding integer value, so "prealpha" < "alpha" < "prebeta" < "beta" < "rc[N]" < "" < "r[N]". Example:

piCout << versionCompare("1.0.0_rc2-999", "1.0.1_rc2-999"); // -1, <
piCout << versionCompare("1.0.0", "0.9.2"); // 1, >
piCout << versionCompare("1.0.0_r1", "1.0.0"); // 1, >
piCout << versionCompare("1.0.0_r1", "1.0.0", 3); // 0, =
piCout << versionCompare("1.0.0_r2", "1.0.0", 3); // 0, =
piCout << versionCompare(".2-alpha", "0.2_alpha"); // 0, =
piCout << versionCompare("1_prebeta", "1.0_alpha"); // 1, >

Returns

• 0 - equal
• 1 - v0 > v1
• -1 - v0 < v1

versionNormalize()

PIString versionNormalize

(

const PIString &

v

)

Converts version string in free notation to classic view.

Parse version as described in versionCompare() and returns classic view of codes and labels: major.minor.revision[-build][_label]. Example:

piCout << versionNormalize(""); // 0.0.0
piCout << versionNormalize("1"); // 1.0.0
piCout << versionNormalize("1.2"); // 1.2.0
piCout << versionNormalize("1.2.3"); // 1.2.3
piCout << versionNormalize("1.2+rc1.99"); // 1.2.99_rc1
piCout << versionNormalize("1.2-alpha"); // 1.2.0_alpha
piCout << versionNormalize("1..4_rc2-999"); // 1.0.4-999_rc2