helper.cpp File Reference

Implementation of helper.h. More...

#include "helper.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

Include dependency graph for helper.cpp:

Defines
#define	ISALPHA(x)   (isalpha(x)||(!isascii(x)))
	Is char from alphabet? It could be alpha or nonascii.
#define	ISBLANK(x)   (isblank(x))
	Is it blank?
#define	ISDIGIT(x)   (isdigit(x))
	Is it digit?
#define	MAXWORD   255
	Initial length of word buffer.
Functions
char *	getword (FILE *input, unsigned int *occurrences)
	Function that reads one word from input file.
int	sgetch (CHAR *where, const char *from)
int	ustrlen (const char *arg)
	Gets one character from string.
Variables
bool	numbered
	Are occurrences included in input file?
unsigned int	maxlen
	Maximal length of prefix.

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Detailed Description

Implementation of helper.h.

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Function Documentation

char* getword	(	FILE *	input,
		unsigned int *	occurrences = NULL
	)

Function that reads one word from input file.

It returns pointer to that word. Be aware! This pointer points to static buffer inside the function, so you shouldn't care about it's deallocation. It's little bit weird, but I never need two words in memory, so why to bother with some allocation and deallocation ;-)

References CHECK_PTR, ISALPHA, ISBLANK, ISDIGIT, MAXWORD, numbered, and VWPRINTF.

Referenced by compute_stats(), and find_it_thread().

int ustrlen

(

const char *

arg

)

Gets one character from string.

Reason why is this function important is utf-8. Because in case of utf-8 one character does not necessary means one byte.