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Full Discussion: To find nth position of character in string
Top Forums Shell Programming and Scripting To find nth position of character in string Post 302901423 by Chubler_XL on Tuesday 13th of May 2014 05:29:17 PM
Old 05-13-2014
You could try this function:

Code:
function index
{
    p=1
    f=0
    t="$1"
    catch=""
    while [ $p -le ${#1} ]
    do
        if [ "${t#$2}" != "$t" ]
        then
            let f=f+1
            if [ $f -eq ${3:-1} ]
            then
                echo $p
                return
            fi
        fi
        t="${1#$catch?}"
        catch="${1%$t}"
        let p=p+1
    done
    echo 0
}

Call it like this:

Code:
index "UK,TK,HK,IND,AUS" , 4
# Result: 13

Or even this:

Code:
index "UK,TK,HK,IND,AUS" "?K" 3
# Result: 7

Last edited by Chubler_XL; 05-13-2014 at 06:56 PM.. Reason: Fixup variables not reset from previous calls
 

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LEARN ABOUT REDHAT

xmtextfieldpostoxy

XmTextFieldPosToXY(library call)										  XmTextFieldPosToXY(library call)

NAME

       XmTextFieldPosToXY -- A TextField function that accesses the x and y position of a character position

SYNOPSIS

       #include <Xm/TextF.h>
       Boolean XmTextFieldPosToXY(
       Widget widget,
       XmTextPosition position,
       Position *x,
       Position *y);

DESCRIPTION

       XmTextFieldPosToXY  accesses the x and y position, relative to the upper left corner of the TextField widget, of a given character position
       in the text buffer.

       widget	 Specifies the TextField widget ID

       position  Specifies the character position in the text for which the x and y position is accessed. This is an integer number of	characters
		 from the beginning of the buffer. The first character position is 0.

       x	 Specifies  the pointer in which the x position is returned.  The returned position is the distance from the left side of the wid-
		 get to the left border of the character.  This value is meaningful only if the function returns True.

       y	 Specifies the pointer in which the y position is returned.  The returned position is the distance from the top of the	widget	to
		 the character's baseline.  This value is meaningful only if the function returns True.

       For a complete definition of TextField and its associated resources, see XmTextField(3).

RETURN

       This function returns True if the character position is displayed in the TextField widget; otherwise, it returns False, and no x or y value
       is returned.

RELATED

       XmTextField(3).

														  XmTextFieldPosToXY(library call)
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