Datalogic Gryphon D412Plus, Руководство по продукции

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146 Gryphon™ D432/D412Plus
ISTR<source_string, string1, position>

string
This function inserts a new string ("string1") within the "source_string" and places it in the
defined "position".
If the value of the "position" argument is longer than "source_string" length, "string1" will be
placed after the last character of the source string.
ReplaceString (RSTR)
This function has the following syntax:
RSTR<source_string, string1, string2>

string
This function searches for "string1" within the "source_string". All the strings having the same
value as "string1" within the "source_string" will be replaced by "string2".
If no "string1" is found in the "source_string", the result returns the "source_string".
Examples
The string transmitted is

12345abcdef3790

and corresponds to the #DS function, as defined
in the programming language.
1. expression

SSTR<#DS,1,5> + SSTR<#DS,11,15> + SSTR<#DS,6,9>

result
 
12345f3790abcd

2. expression

FSTR<#DS, }616263~, }616263~, 0> +
SSTR<#DS,LSTR<#DS> -3, LSTR<#DS>

result
 
abc3790

3. expression

FSTR<#DS,

616272

,

616261

,
0>

result
 
null string
4. expression

#DS - FSTR<#DS,

616263

,

6566

,
0>

result

123453790

During the format definition the decoded string represented by #DS does not change.
Using Format Output in Format Definition
The input used by the above functions to define the code formatting usually corresponds to the
decoded code (#DS). Actually, the formatting expression of each function can also format the
result (output) produced by a preceding code formatting.
The format output is represented as follows:
#F<n>
, where:
<n>
= format number in the range 1-4
#F
= format output
Being Format 5 not included in other format expression, the format number is in the range 1-4.
Furthermore, since a format expression operates upon the output of the preceding formats, the
expression defining Format 1 will never contain the result of another format.
Example
The following expression is used to define Format 3:
#DS + FSTR<#F2,

6173

,

6263

, 0>
The expression input consists of the decoded code and the result produced by Format 2 (#F2).
The FSTR function searches for a defined substring within the #F2 result; then, it concatenates
this substring and the decoded code. The result corresponds to #F3 output.