string problem

[dexto]

$txt = "<a> useless text <b> 5 users </a"
ConsoleWrite(StringInStr($txt, '>', 1, -1, 5)&@CRLF)

Output: 3

How is that possible?

P.S. Using AutoIt v3.3.6.0

[jchd]

$txt = "<a> useless text <b> 5 users </a"

ConsoleWrite(StringInStr($txt, '>', 1, -1, 5)&@CRLF)

This is correct: return the 1-based position of the first occurence of '>' searching from right to left begining at position 5 using a case-sensitive compare.

[dexto]

$txt = "<a> useless text <b> 5 users </a"

ConsoleWrite(StringInStr($txt, '>', 1, -1, 5)&@CRLF)

This is correct: return the 1-based position of the first occurence of '>' searching from right to left begining at position 5 using a case-sensitive compare.

Starting from the right to left first occurrence of the string '>' is not 3 but 20.. so, function should return 20?

Like so: StringInStr($txt, '>', 1, -1)

Output: 20

[big_daddy]

You are telling it to start searching from position 5 which would be the "u" in useless. The first occurrence from right to left from there is the third position in the string.

[jchd]

You omit starting at position 5. So Position 5 is your rightmost position.

Equivalent code:

$cmp = StringLeft($txt, 5)

$cmp = _StringReverse($cmp)

$res = StringLen($cmp) - StringInStr($cmp, '>') + 1

[dexto]

oh.... now i see! Offset of the string is also direction dependent.

Edit: never mind I don't see.

Edited April 3, 2010 by dexto

[dexto]

You are telling it to start searching from position 5 which would be the "u" in useless. The first occurrence from right to left from there is the third position in the string.

$txt = "<a> useless text <b> 5 users   </a"
ConsoleWrite(StringInStr($txt,'>',0,-1,5)&@CRLF)

Its not 3rd in this case... yet output is 3

[dexto]

You omit starting at position 5. So Position 5 is your rightmost position.

Equivalent code:

$cmp = StringLeft($txt, 5)

$cmp = _StringReverse($cmp)

$res = StringLen($cmp) - StringInStr($cmp, '>') + 1

5 is not the rightmost position, its "start [optional] The starting position of the search. "

[dexto]

In other words "negative occurrence to search from the right side" invalidates the "start" and "count" of the function and "finds first occurrence" instead.

So:

StringInStr($txt,'>',0,-1,5)
; Same as
StringInStr($txt,'>',0,1)
; or
StringInStr($txt,'>')

[James]

First word that comes to mind with your last FOUR posts? EDIT.

Thanks.

[dexto]

In fact....

$txt = "<a> useless text <b> 5 users   </a"
ConsoleWrite(StringInStr($txt,'>',0,-1,6,8)&@CRLF)
ConsoleWrite(StringInStr($txt,'>',0,-1,5)&@CRLF)
ConsoleWrite(StringInStr($txt,'>',0,-1,5)&@CRLF)
ConsoleWrite(StringInStr($txt,'>',0,1)&@CRLF)
ConsoleWrite(StringInStr($txt,'>')&@CRLF)

Are all the same.

P.S.

Sorry for multiple concurrent posts...

Edited April 3, 2010 by dexto

[jchd]

No, you still don't get it. The code is equivalent to what I gave (except that I forgot the case-isensitive parameter, which is irrelevant for this example).

Here is the match at 3 (down arrow)

12↓

<a> useless text <b> 5 users </a

1234↲ start comparing here, to the left

Edit: argh, formatting once again destroyed. Another try.

Edited April 3, 2010 by jchd

[jchd]

Replying to "all the same": in this particular case, yes, but if one changes a little the input:

$txt = "a>us>eless>text <b> 5 users </a"
ConsoleWrite(StringInStr($txt,'>',0,-1,12,8)&@CRLF)
ConsoleWrite(StringInStr($txt,'>',0,-1,5)&@CRLF)
ConsoleWrite(StringInStr($txt,'>',0,1)&@CRLF)
ConsoleWrite(StringInStr($txt,'>')&@CRLF)

The last two statements are indeed exactly identical (default values)

[big_daddy]

$txt = "Why is this so hard for you to understand?"

; Position 5 is the "i" in is
; This returns 3 because the "y" in why is the first occurrence from right to left of the "i" in is
ConsoleWrite(StringInStr($txt, 'y', 1, -1, 5) & @CRLF)

; Position 10 is the "i" in this
; This returns 0 because StringInStr does not wrap back around and search the remainder of the string
ConsoleWrite(StringInStr($txt, 'd', 1, -1, 10) & @CRLF)

; Position 15 is the space between so and hard
; This returns 14 because the "o" in so is the first occurrence from right to left of the space between so and hard
ConsoleWrite(StringInStr($txt, 'o', 1, -1, 15) & @CRLF)

Edited April 3, 2010 by big_daddy

[dexto]

He... well..

I missed that count was counting down the characters from the start not the parameters to point the scope of the search (like StringMid would).

Thank you guys for the patience! Big props for that!

Edited April 3, 2010 by dexto