Shell Programming and Scripting

Hi Friends!!

I have obtained following output from a tool called pdftoxml:

<xml>
<text top="423" left="521" width="333" height="20" font="3">Although the the number of fuzzy rules of a system is </text>
<text top="441" left="500" width="355" height="20" font="3">directly dependant on these parameters. As the number of </text>
<text top="459" left="500" width="355" height="20" font="3">parameters increase, the number of fuzzy rules of the system </text>
<text top="477" left="500" width="125" height="20" font="3">grows exponentially.</text>

<text top="495" left="521" width="333" height="20" font="3">In fuzzy logic systems, there is a direct relationship </text>
<text top="513" left="500" width="355" height="20" font="3">between the number of fuzzy sets of input parameters of </text>
<text top="531" left="500" width="355" height="20" font="3">the system and the size of the fuzzy knowledge base (FKB). </text>
<text top="549" left="500" width="355" height="20" font="3">Kosko (1992) call this the "Curse of Dimensionallity." The </text>
<text top="567" left="500" width="355" height="20" font="3">"curse" in this instance is that there is exponential growth </text>
<text top="585" left="500" width="355" height="20" font="3">in the size of the fuzzy knowledge base (FKB), where <i>k</i> is </text>
<text top="603" left="500" width="355" height="20" font="3">the number of rules in the FKB, <i>m</i> is the number of fuzzy </text>
<text top="621" left="500" width="355" height="20" font="3">sets for each input and <i>n</i> is the number of inputs into the </text>
<text top="639" left="500" width="82" height="20" font="3">fuzzy system.

<text top="657" left="521" width="333" height="20" font="3">As the number of.....</text>
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</text>
</xml>

Now, i want to write a script that detects paragraph in above code and enclose it within <P> tags.
Following condition should be used while detecting paragraphs.

"Paragraph starts when left=333 and ends as soon as it finds same value of left (i.e 333) again."

So, the FINAL OUTPUT should be as under:

<P>Although the the number of fuzzy rules of a system is directly dependant on these parameters. As the number of parameters increase, the number of fuzzy rules of the system grows exponentially.</P>

<P>In fuzzy logic systems, there is a direct relationship between the number of fuzzy sets of input parameters of the system and the size of the fuzzy knowledge base (FKB). Kosko (1992) call this the “Curse of Dimensionallity.” The “curse” in this instance is that there is exponential growth in the size of the fuzzy knowledge base (FKB), where k is the number of rules in the FKB, m is the number of fuzzy sets for each input and n is the number of inputs into the fuzzy system.</P>
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Thanks a ton in advance!!!

Code:

> cat file123 | cut -d'"' -f4,11- | sed 's/521">/<\/P>~<P>/' | sed 's/500">//' | sed 's/<\/text>//' | tr -d "\n" | tr "~" "\n" | tail +2 ; echo '</P>'
<P>Although the the number of fuzzy rules of a system is directly dependant on these parameters. As the number of parameters increase, the number of fuzzy rules of the system grows exponentially.</P>
<P>In fuzzy logic systems, there is a direct relationship between the number of fuzzy sets of input parameters of the system and the size of the fuzzy knowledge base (FKB). Kosko (1992) call this the "Curse of Dimensionallity." The "curse" in this instance is that there is exponential growth in the size of the fuzzy knowledge base (FKB), where <i>k</i> is the number of rules in the FKB, <i>m</i> is the number of fuzzy sets for each input and <i>n</i> is the number of inputs into the fuzzy system.</P>

p.s. yes, that initial cat could have been replaced, it is merely the way I proceeded to solve this puzzle by slowly transforming the output. Try the command out piece by piece, and you will see how the data is slowly transformed to the requested output layout.

Brilliant! Thanks Sir.