XML: Difference between revisions

Revision as of 14:45, 14 August 2018

Generic remarks about XML.

Comments start with . Comments cannot be nested.

Regular expressions to check if we enter or leave a comment block

 if ( ( $line =~ /-->/ ) && ( $incomment == 1 )) {
  $incomment = 0;
  $line =~ s/(<!--)?.*$&//;
 }
 if ( $incomment == 0 ) {
  if ( $line =~ /<!--/ ) {
   $incomment = 1;
   $line =~ s/$&.*?(-->)//;
   if ( $1 ) {
    $incomment = 0;
   }
  }

xmllint --noout <xmlfile>: Test if <xmlfile> has valid xml and report errors. Without --noout the tree will be printed too.

@@ Line 1: / Line 1: @@
 Generic remarks about XML.
-Comments start with '<!--' and end with '-->'.
+Comments start with <code><nowiki><!--</nowiki></code> and end with <code><nowiki>--></nowiki></code>.
 Comments cannot be nested.
-Regular expressions to remove comments (Perl code)
+Regular expressions to check if we enter or leave a comment block
 <syntaxhighlight lang=perl>
-#If comment-end is found remove comment-part.
+  if ( ( $line =~ /-->/ ) && ( $incomment == 1 )) {
-#  comment-start may be on the same line.
+  $incomment = 0;
-if ( $line =~ /(\<\!--)?.*--\>/ ) {
+  $line =~ s/(<!--)?.*$&//;
- $comment = 0;
+ }
- $line =~ s/$&//;
+ if ( $incomment == 0 ) {
-# If there is only a comment-start, clear line until comment-end is found
+  if ( $line =~ /<!--/ ) {
-} elsif ( $line =~ /\<\!--/ ) {
+   $incomment = 1;
- $comment = 1;
+   $line =~ s/$&.*?(-->)//;
- $line =~ s/\<\!--.*$//;
+   if ( $1 ) {
-}
+    $incomment = 0;
-if ( $comment ) {
+   }
-  $line = '';
+  }
-}
 </syntaxhighlight>
+;xmllint --noout <xmlfile>
+:Test if <xmlfile> has valid xml and report errors. Without --noout the tree will be printed too.

XML: Difference between revisions

Revision as of 14:45, 14 August 2018

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