Extracting HREF attributes from HTML files - Revision history

Root: /* Implementation */

2016-03-16T16:34:55Z

Implementation

← Older revision		Revision as of 16:34, 16 March 2016
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	Note that this implementation is simplified and may not address all the intricacies of an HTML definition.		Note that this implementation is simplified and may not address all the intricacies of an HTML definition.
	{{CollapsedCode\|Ficheiro hrefs.l\|		{{CollapsedCode\|Ficheiro hrefs.l\|
	<~~text~~>		<pre>
	%option stack 8bit noyywrap yylineno		%option stack 8bit noyywrap yylineno

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	return 0;		return 0;
	}		}
	</~~text~~>		</pre>
	}}		}}
	=== How to compile? ===		=== How to compile? ===

Root: /* Implementation */

2016-03-16T16:33:22Z

Implementation

← Older revision		Revision as of 16:33, 16 March 2016
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	Note that this implementation is simplified and may not address all the intricacies of an HTML definition.		Note that this implementation is simplified and may not address all the intricacies of an HTML definition.
			{{CollapsedCode\|Ficheiro hrefs.l\|
	<text>		<text>
	%option stack 8bit noyywrap yylineno		%option stack 8bit noyywrap yylineno
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	}		}
	</text>		</text>
			}}
	=== How to compile? ===		=== How to compile? ===

Root at 16:32, 16 March 2016

2016-03-16T16:32:44Z

← Older revision		Revision as of 16:32, 16 March 2016
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	<A href="file:/etc/passwd">		<A href="file:/etc/passwd">

	HTML files may contain multiple white spaces (spaces, tabs, and newlines) in and around elements ~~Podem existir zero ou mais caracteres brancos~~. References must be printed without delimiters. For simplicity, consider that the <code>\"</code> and <code>\'</code> delimiters cannot occurs in references. Since HTML is not case sensitive, the HREF attribute can also be written as href, Href, hREF, among other combinations.		HTML files may contain multiple white spaces (spaces, tabs, and newlines) in and around elements. References must be printed without delimiters. For simplicity, consider that the <code>\"</code> and <code>\'</code> delimiters cannot occurs in references. Since HTML is not case sensitive, the HREF attribute can also be written as href, Href, hREF, among other combinations.

	References inside comments (delimited by, possibly nested, the <!-- e --> sequences) should not be collected. In the same way, possible references inside strings other than the described above should be ignored.		References inside comments (delimited by, possibly nested, the <!-- e --> sequences) should not be collected. In the same way, possible references inside strings other than the described above should be ignored.

Root at 14:27, 6 April 2015

2015-04-06T14:27:49Z

← Older revision		Revision as of 14:27, 6 April 2015
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	Note that we are using a custom made <tt>main</tt> function and, thus, need not link with libfl.a (the default implementation for the test function -- not needed in general).		Note that we are using a custom made <tt>main</tt> function and, thus, need not link with libfl.a (the default implementation for the test function -- not needed in general).

	[[category:~~Compilers~~]]		[[category:Compiladores]]
	[[category:~~Teaching~~]]		[[category:Ensino]]

Root: /* Implementation */

2008-04-03T08:47:42Z

Implementation

← Older revision		Revision as of 08:47, 3 April 2008
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	static std::vector<std::string> hrefs;		static std::vector<std::string> hrefs;

	/**		/*

	<tag-qualquer attr-qualquer="ldkj" outracoisa='mjsdhfd' href=http://bla.bla.bla mais="">		<tag-qualquer attr-qualquer="ldkj" outracoisa='mjsdhfd' href=http://bla.bla.bla mais="">
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	<X_TAG>">" yy_pop_state();		<X_TAG>">" yy_pop_state();
	<X_TAG>{HREF} yy_push_state(X_REF1);		<X_TAG>{HREF} yy_push_state(X_REF1);
			<X_TAG>{ATTR} yy_push_state(X_DONTCARE);
	<X_TAG>.\|\n ;		<X_TAG>.\|\n ;

Root at 20:58, 30 March 2008

2008-03-30T20:58:56Z

@@ Line 12: / Line 12: @@
 References inside comments (delimited by, possibly nested, the <!-- e --> sequences) should not be collected. In the same way, possible references inside strings other than the described above should be ignored.
-== A Possible Implementations ==
+== Implementation ==
 Note that this implementation is simplified and may not address all the intricacies of an HTML definition.
+%{
 [[category:Compilers]]
 [[category:Teaching]]

Root: New page: == The Problem == We want to build a program to extract all the hyper-references from an HTML file. The references to be extracted exist in HTML elements: these elements are delimited by...

2008-03-30T20:14:51Z

New page: == The Problem == We want to build a program to extract all the hyper-references from an HTML file. The references to be extracted exist in HTML elements: these elements are delimited by...

New page

== The Problem ==

We want to build a program to extract all the hyper-references from an HTML file.

The references to be extracted exist in HTML elements: these elements are delimited by angle brackets (< and >) and the references themselves are enclosed in by <code>\"</code> or <code>\'</code> (in the implementation below we also admit that they occur between a <code>=</code> sign and the following space).

The only references we are interested in are those specified in HREF attributes. As an example consider
<A href="file:/etc/passwd">

HTML files may contain multiple white spaces (spaces, tabs, and newlines) in and around elements Podem existir zero ou mais caracteres brancos. References must be printed without delimiters. For simplicity, consider that the <code>\"</code> and <code>\'</code> delimiters cannot occurs in references. Since HTML is not case sensitive, the HREF attribute can also be written as href, Href, hREF, among other combinations.

References inside comments (delimited by, possibly nested, the  sequences) should not be collected. In the same way, possible references inside strings other than the described above should be ignored.

== A Possible Implementations ==

Note that this implementation is simplified and may not address all the intricacies of an HTML definition.

[[category:Compilers]]
[[category:Teaching]]