HTML_Parser_FindClosingTagPosition ( )
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FileMaker 7.0 +
Date posted
02 December 2010
Last updated
05 December 2010
Version
1.1 + View history
Recursive function
Yes
Function overview
Prototype
HTML_Parser_FindClosingTagPosition (
html; tag; pos; curindex )
Parameters
html The html string you are parsing
tag The name of your tag e.g.
pos Current position from which we are starting (should be a position after our start tag)
curindex Should always be set to 1
Description
Tags: XML Text Parsing HTML
Given a starting position (being a position immediately following a start html tag), this function finds the position of the corresponding end html tag.
It also takes into account groups of tags that may be contained within the tag (see example).
Examples
Sample input
HTML_Parser_FindClosingTagPosition ( "<html><table><tr><td><table>Test</table></td></tr></table></html>" ; "table" ; 8 ; 1 )
Sample output
51
Function code
//Cur Index Should be set as 1 if starting past the beggingin of the start tag, or 0 if starting at or before the starting position of the tag
Let([
next_start_tag_pos = Position ( Lower(html) ; "<" & Lower(tag) ; pos ; 1 );
next_end_tag_pos = Position( Lower(html) ; "</" & Lower(tag) & ">" ; pos ; 1 );
next_tag_pos = If( next_start_tag_pos < next_end_tag_pos and next_start_tag_pos <> 0 ; next_start_tag_pos ; next_end_tag_pos );
curindex = If( next_start_tag_pos < next_end_tag_pos and next_start_tag_pos <> 0 ; curindex+1 ; curindex-1 )
];
Case(
curindex = 0 ; next_tag_pos ;
next_tag_pos = 0 ; -1 ;
HTML_Parser_FindClosingTagPosition( html ; tag ; next_tag_pos+1 ; curindex )
)
)
// ===================================
/*
This function is published on FileMaker Custom Functions
to check for updates and provide feedback and bug reports
please visit http://www.fmfunctions.com/fid/283
Prototype: HTML_Parser_FindClosingTagPosition( html; tag; pos; curindex )
Function Author: Genx (http://www.fmfunctions.com/mid/29)
Last updated: 05 December 2010
Version: 1.1
*/
// ===================================
Let([
next_start_tag_pos = Position ( Lower(html) ; "<" & Lower(tag) ; pos ; 1 );
next_end_tag_pos = Position( Lower(html) ; "</" & Lower(tag) & ">" ; pos ; 1 );
next_tag_pos = If( next_start_tag_pos < next_end_tag_pos and next_start_tag_pos <> 0 ; next_start_tag_pos ; next_end_tag_pos );
curindex = If( next_start_tag_pos < next_end_tag_pos and next_start_tag_pos <> 0 ; curindex+1 ; curindex-1 )
];
Case(
curindex = 0 ; next_tag_pos ;
next_tag_pos = 0 ; -1 ;
HTML_Parser_FindClosingTagPosition( html ; tag ; next_tag_pos+1 ; curindex )
)
)
// ===================================
/*
This function is published on FileMaker Custom Functions
to check for updates and provide feedback and bug reports
please visit http://www.fmfunctions.com/fid/283
Prototype: HTML_Parser_FindClosingTagPosition( html; tag; pos; curindex )
Function Author: Genx (http://www.fmfunctions.com/mid/29)
Last updated: 05 December 2010
Version: 1.1
*/
// ===================================
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