Text index of substring

The “In text find” block is used to get the position of a searched character or string. Left part defines the source string. This argument is required.

Middle part is a selection box:

first: returns position of the first occurrence of the searched character or string,
last: returns position of the last occurrence of the searched character or string.

Right part defines searched character or string and argument is required. The output of the block is a integer value of the string position. If the searched string is not found, output value of the block is “-1”.

In case string search can’t be performed, for example input value is not a string, the block returns None.

Block XML representation

XML representation of the text_index_of block

<xml xmlns="http://www.w3.org/1999/xhtml">
  <block type="text_index_of">
    <field name="END">FIRST</field>
    <value name="VALUE">
      <block type="variables_get">
        <field name="VAR">text</field>
      </block>
    </value>
    <value name="FIND">
      <block type="text">
        <field name="TEXT">sub_str</field>
      </block>
    </value>
  </block>
</xml>

Example of visual representation

Block "In text find" — Block “In text find”

Example of block usage

Example of "In text find" block — Example of “In text find” block

User name is acquired from the input message in example.

Block is used on the “set user_position” row in the example:

“In text find” block reads the value of message raw and finds last occurrence of “user:” string.
Result is value “72”.
This value is used in next “In text get substring” block, where string “user: administrator” is loaded.
String is saved into the “user_part” variable.
“user_part” variable is used in the next “In text get substring” block.
Output is value “administrator”.

Input data

Login permitted from 192.168.10.1/1234 to inside:192.168.1.1/https for user: administrator

Processing result

Results of "In text find" block — Results of “In text find” block