WXP::Scanp Class Reference

This class parses data given expressions to search for. More...

#include "../include/Scanp.h"

Public Member Functions
int	init ()
int	scan (const char *pat,...)
	This routine scans a character string for data and parses information using a pattern description string.
int	set (const char *str)
int	getOffset ()
int	offset (int off)
int	inc (int off)
int	inc ()
const char *	string ()
char	getChar (int off)
int	search (const char *str)
int	print ()
int	length ()
int	matched ()
int	assigned ()
bool	finished ()

Detailed Description

This class parses data given expressions to search for.

Author

Dan Vietor

Member Function Documentation

getChar()

char Scanp::getChar

(

int

roff

)

Returns character at specific offset

Parameters

off

Offset

Returns

Character

Referenced by WXP::RcmFile::decode(), WXP::MetarTool::decode(), and WXP::SaoTool::decode().

getOffset()

int Scanp::getOffset

(

)

Returns current offset into string

Returns

Current offset

Referenced by WXP::SaoTool::decode().

inc() [1/2]

int Scanp::inc

(

)

Increments offset based on matched length of previous scan (see scan)

inc() [2/2]

int Scanp::inc

(

int

roff

)

Increments offset into string

Parameters

off	Increment value

Referenced by WXP::ClimatTool::decode(), WXP::RcmFile::decode(), WXP::MetarTool::decode(), WXP::SaoTool::decode(), and WXP::SynopTool::decode().

init()

int Scanp::init

(

)

Initializes class values

Referenced by scan().

offset()

int Scanp::offset

(

int

roff

)

Sets offset into string

Parameters

Current

offset

Referenced by WXP::MosUFile::decodeETA().

scan()

int Scanp::scan	(	const char *	pat,
			...
	)

This routine scans a character string for data and parses information using a pattern description string.

Scans and decodes data

Parameters

pat	Pattern to use

Formatting similar to scanf except more robust:

%{*}{<}{f}{!m!}t

• * Don't assign to a variable
  
• f Field width - match exactly this number of characters
  
• <f Field width - match up to this number of characters
  
• !m! Specifies that a missing value can be specified
  either is nothing or the string m
  
• t Format type
  – s Standard string delimited by spaces
  – S Match all characters - terminatint null character
  – c Standard characters - no terminating null character
  – A Alphabetic string only
  – N Numeric string only
  – n Current position in string
  – d Integer
  – D Integer, no white space skip
  – f Floating point
  – F Floating point, no white space skip
  – w Whitespace
  – W Whitespace, no newline
  – (s) Match exact string
  – (s|s|..) Match strings in this set of string delimited with |
  – [s] Match character types or specific characters s = A for alphabetic, N for numeric, all others literal
  – [^s] Match everythin but character types or specific characters
  
  Leading whitespace are not read on S,A,N,D or F formats.
  
  Non-format characters are literal except space which matches any number of whitespace characters.
  

References init(), WXP::Const::MISS, and WXP::Wxp::outDebug().

Referenced by WXP::ClimatTool::decode(), WXP::RcmFile::decode(), WXP::MetarTool::decode(), WXP::SaoTool::decode(), WXP::SynopTool::decode(), and WXP::MosUFile::decodeETA().

search()

int Scanp::search

(

const char *

rstr

)

Searches the current string for another string

Parameters

rstr	String to search for

Returns

1 if found, 0 if not

set()

int Scanp::set

(

const char *

rstr

)

Sets the string to scan

Parameters

rstr	Data string

Referenced by WXP::ClimatTool::decode(), WXP::RcmFile::decode(), WXP::MetarTool::decode(), WXP::SaoTool::decode(), WXP::SynopTool::decode(), and WXP::MosUFile::decodeETA().

string()

const char * Scanp::string

(

)

Returns string after offset

Returns

String

Referenced by WXP::ClimatTool::decode(), WXP::RcmFile::decode(), WXP::MetarTool::decode(), WXP::SaoTool::decode(), and WXP::SynopTool::decode().

---

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

• Scanp.h
• Scanp.cc