Number of matches and matched pattern(s) in awk Post: 302963245

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Top Forums Shell Programming and Scripting Number of matches and matched pattern(s) in awk Post 302963245 by durden_tyler on Saturday 26th of December 2015 07:36:56 PM

12-26-2015

Registered User

Code:

$ 
$ cat -n f36.awk
     1	BEGIN {ind=0; str=""}
     2	{
     3	     n = split($0, a, "");
     4	     i = 1;
     5	     while (i <= n) {
     6	         if (a[i] >= 1 && a[i] <= 9) {
     7	             str = a[i];
     8	             for (j=i+1; j<=i+a[i]; j++) {
     9	                 str = str""a[j];
    10	             }
    11	             ind++;
    12	             pattern[ind] = str;
    13	             str = "";
    14	             i = i + a[i] + 1;
    15	         } else if (a[i] >= "A" && a[i] <= "Z") {
    16	             ind++;
    17	             pattern[ind] = a[i];
    18	             i++;
    19	         } else {
    20	             i++;
    21	         }
    22	     }
    23	}
    24	END {
    25	    for (k=1; k<=ind; k++) { printf("pattern[%d] = [%s]\n", k, pattern[k]) }
    26	}
    27	
$ 
$ echo "\!@#$%2QW5QWERTAB$%^&*" | awk -f f36.awk
pattern[1] = [2QW]
pattern[2] = [5QWERT]
pattern[3] = [A]
pattern[4] = [B]
$ 
$ 
$ echo "\!@#$%2QW7QWERTABXY3PQR$%^Z&*LMn#O" | awk -f f36.awk
pattern[1] = [2QW]
pattern[2] = [7QWERTAB]
pattern[3] = [X]
pattern[4] = [Y]
pattern[5] = [3PQR]
pattern[6] = [Z]
pattern[7] = [L]
pattern[8] = [M]
pattern[9] = [O]
$ 
$

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fnmatch

FNMATCH(3)						     Linux Programmer's Manual							FNMATCH(3)

NAME

       fnmatch - match filename or pathname

SYNOPSIS

       #include <fnmatch.h>

       int fnmatch(const char *pattern, const char *string, int flags);

DESCRIPTION

       The fnmatch() function checks whether the string argument matches the pattern argument, which is a shell wildcard pattern.

       The flags argument modifies the behaviour; it is the bitwise OR of zero or more of the following flags:

       FNM_NOESCAPE
	      If this flag is set, treat backslash as an ordinary character, instead of an escape character.

       FNM_PATHNAME
	      If  this	flag  is set, match a slash in string only with a slash in pattern and not, for example, with a [] - sequence containing a
	      slash.

       FNM_PERIOD
	      If this flag is set, a leading period in string has to be matched exactly by a period in pattern.  A  period  is	considered  to	be
	      leading if it is the first character in string, or if both FNM_PATHNAME is set and the period immediately follows a slash.

       FNM_FILE_NAME
	      This is a GNU synonym for FNM_PATHNAME.

       FNM_LEADING_DIR
	      If  this	flag (a GNU extension) is set, the pattern is considered to be matched if it matches an initial segment of string which is
	      followed by a slash.  This flag is mainly for the internal use of glibc and is only implemented in certain cases.

       FNM_CASEFOLD
	      If this flag (a GNU extension) is set, the pattern is matched case-insensitively.

RETURN VALUE

       Zero if string matches pattern, FNM_NOMATCH if there is no match or another non-zero value if there is an error.

CONFORMING TO

       ISO/IEC 9945-2: 1993 (POSIX.2).	The FNM_FILE_NAME, FNM_LEADING_DIR, and FNM_CASEFOLD flags are GNU extensions.

SEE ALSO

       sh(1), glob(3), scandir(3), glob(7)

GNU
								    2000-10-15								FNMATCH(3)

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