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DatePattern Class Reference

Extra class to represent a Date category. More...

#include <datepattern.h>

List of all members.

Public Methods

 DatePattern ()
 DatePattern (const DatePattern &p, unsigned int l)
 Construct DatePattern containing first l components of p.

bool parse (const string &date_string)
 Parses 1999-03-12 10:00, 1999-3-12, 1999-3, 1999.

void set (unsigned int year, unsigned int month, unsigned int day, unsigned int hours)
 Set components explicitly.

const unsigned int operator[] (unsigned int i) const
unsigned int size () const
bool operator== (const DatePattern &p) const
bool operator< (const DatePattern &p) const

Private Attributes

vector<unsigned int> date_

Friends

ostream& operator<< (ostream &,const DatePattern &)

Detailed Description

Extra class to represent a Date category.

Definition at line 10 of file datepattern.h.

Constructor & Destructor Documentation

DatePattern::DatePattern ( ) [inline]
 

Definition at line 12 of file datepattern.h.

00012 {}

DatePattern::DatePattern ( const DatePattern & p,
unsigned int l )
 

Construct DatePattern containing first l components of p.

Definition at line 7 of file datepattern.C.

00007                                                             {
00008 unsigned int m(min(p.size(),n));
00009 date_.resize(m);
00010 for (unsigned int i=0; i<n; ++i)
00011   date_[i] = p[i];
00012 }

Member Function Documentation

bool DatePattern::parse ( const string & date_string )
 

Parses 1999-03-12 10:00, 1999-3-12, 1999-3, 1999.

Definition at line 17 of file datepattern.C.

00017                                   {
00018 date_.clear();
00019 /* We use a simple brute-force procedure: copy the string
00020    to a C-string where we replace all non-digit chars with
00021    spaces. The repeatedly call strtol to parse this C string
00022    into a number of integers. See ``man strtol'' for details.
00023 */
00024 char    cs[s.size()+1];
00025 
00026 for (unsigned int i=0; i<s.size(); ++i)
00027   if (isdigit(s[i]))
00028      cs[i] = s[i];
00029   else
00030      cs[i] = ' ';
00031 cs[s.size()] = '\0';
00032 
00033 const char*     start(cs);
00034 char*           end(cs);
00035 unsigned int    n(0);
00036 
00037 do {
00038   start = end;
00039   long l(strtol(start,&end,10));
00040   if (end!=start) {
00041     ++n;
00042     if (l<0 || n>5) { // no negative stuff and no more than 5 numbers expected
00043       date_.clear();
00044       return false;
00045       }
00046     if (n<5) // only 4 numbers stored.
00047       date_.push_back(static_cast<unsigned int>(l));
00048     }
00049   }
00050 while (end!=start);
00051 return true;
00052 }

void DatePattern::set ( unsigned int year,
unsigned int month,
unsigned int day,
unsigned int hours )
 

Set components explicitly.

Definition at line 55 of file datepattern.C.

Referenced by LogRecord::parse_date(). 

00056                                               {
00057 date_.resize(4);
00058 date_[0] = year;
00059 date_[1] = month;
00060 date_[2] = day;
00061 date_[3] = hours;
00062 }

const unsigned int DatePattern::operator[] ( unsigned int i ) const [inline]
 

Definition at line 22 of file datepattern.h.

00022 { return date_[i]; }

unsigned int DatePattern::size ( ) const [inline]
 

Definition at line 23 of file datepattern.h.

Referenced by DatePattern(), and operator<<(). 

00023 { return date_.size(); }

bool DatePattern::operator== ( const DatePattern & p ) const [inline]
 

Definition at line 25 of file datepattern.h.

00025 { return date_ == p.date_; }

bool DatePattern::operator< ( const DatePattern & p ) const [inline]
 

Definition at line 26 of file datepattern.h.

00026 { return date_ < p.date_; }

Friends And Related Function Documentation

ostream & operator<< ( ostream & os,
const DatePattern & date ) [friend]
 

Definition at line 65 of file datepattern.C.

00065                                                 {
00066 unsigned int sz(date.size());
00067 // Print in format year-month-day hours:00.
00068 if (sz>0) {
00069   os << date[0] ;
00070   if (sz>1) {
00071     os << "-" << date[1];
00072     if (sz>2) {
00073       os << "-" << date[2];
00074       if (sz>3)
00075         os << " " << date[3] << ":00";
00076       }
00077     }
00078   }
00079 return os;
00080 }

Member Data Documentation

vector< unsigned int > DatePattern::date_<unsigned int> [private]
 

Definition at line 30 of file datepattern.h.

The documentation for this class was generated from the following files:
httpstats-stage02a [ 7 April, 2001]