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Full Discussion: String and pointer problem
Top Forums Programming String and pointer problem Post 302210268 by jim mcnamara on Monday 30th of June 2008 01:47:44 PM
Old 06-30-2008
These are standard little tools C programmers use:
Code:
#include <string.h>
#include <stdlib.h>
#include <ctype.h>

char *ltrim(char *dest)
{
	if(*dest)
	{
		char *working=calloc(1,strlen(dest)+1);
		char *p=dest;
		while(isspace(*p)) p++;
		strcpy(working,p);
		strcpy(dest, working);
		free(working);
	}
	return dest;
}

char *rpad(char *dest, size_t len, int padchar)
{
    if(strlen(dest) < len)
    {
		char *working=calloc(1, len+1);
	    memset(working, padchar, len);
	    memcpy(working, dest, strlen(dest));
	    strcpy(dest, working);
		free(working);
	}
	return dest;
}

int main()
{
	char test[64]={0x0};
	strcpy(test, " X");
	printf("before :%s: ", test);
	ltrim(test);
	printf("After ltrim :%s: ", test);
	rpad(test, 32, ' ');
	printf("after rpad  :%s:\n", test);
	return 0;
}

 

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LEARN ABOUT DEBIAN

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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