Some times ago I had to parse a XML messages’ file to produce some i18n properties files.
I decided to try it with Ruby, mainly because of two reasons:
- I’m continuosly exploring some dynamically-typed languages, like Python and Ruby
- I wanted to try the conciseness of programming with closures
So, I used the REXML API to process the XML file. The result code looks like the one below:
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<span class="syntax0"><span class="gutter"> 1:</span><span class="syntax9">require</span> <span class="syntax13">'</span><span class="syntax13">rexml/document</span><span class="syntax13">'</span> <span class="gutter"> 2:</span><span class="syntax9">include</span> REXML <span class="gutter"> 3:</span>englishFile <span class="syntax18">=</span> File.new<span class="syntax18">(</span><span class="syntax13">'</span><span class="syntax13">englishFileName</span><span class="syntax13">'</span>, <span class="syntax13">'</span><span class="syntax13">w+</span><span class="syntax13">'</span><span class="syntax18">)</span> <span class="gutter"> 4:</span>spanishFile <span class="syntax18">=</span> File.new<span class="syntax18">(</span><span class="syntax13">'</span><span class="syntax13">spanishFileName</span><span class="syntax13">'</span>, <span class="syntax13">'</span><span class="syntax13">w+</span><span class="syntax13">'</span><span class="syntax18">)</span> <span class="gutterH"> 5:</span>portugueseFile <span class="syntax18">=</span> File.new<span class="syntax18">(</span><span class="syntax13">'</span><span class="syntax13">portugueseFileName</span><span class="syntax13">'</span>, <span class="syntax13">'</span><span class="syntax13">w+</span><span class="syntax13">'</span><span class="syntax18">)</span> <span class="gutter"> 6:</span>errorMessagesFile <span class="syntax18">=</span> File.new<span class="syntax18">(</span><span class="syntax13">"</span><span class="syntax13">errorMessages</span><span class="syntax13">.</span><span class="syntax13">xml</span><span class="syntax13">"</span><span class="syntax18">)</span> <span class="gutter"> 7:</span>document <span class="syntax18">=</span> Document.new<span class="syntax18">(</span>file<span class="syntax18">)</span> <span class="gutter"> 8:</span>root <span class="syntax18">=</span> document.root <span class="gutter"> 9:</span>root.each_element<span class="syntax18">(</span><span class="syntax13">"</span><span class="syntax13">Property</span><span class="syntax13">"</span><span class="syntax18">)</span> <span class="syntax8">do</span> <span class="syntax18">|</span>propertyTag<span class="syntax18">|</span> <span class="gutterH"> 10:</span> id <span class="syntax18">=</span> propertyTag.attributes<span class="syntax18">[</span><span class="syntax13">'</span><span class="syntax13">id</span><span class="syntax13">'</span><span class="syntax18">]</span> <span class="gutter"> 11:</span> propertyTag.each_element<span class="syntax18">(</span><span class="syntax13">"</span><span class="syntax13">element</span><span class="syntax13">"</span><span class="syntax18">)</span> <span class="syntax8">do</span> <span class="syntax18">|</span>elementTag<span class="syntax18">|</span> <span class="gutter"> 12:</span> elementAttr <span class="syntax18">=</span> elementTag.attributes<span class="syntax18">[</span><span class="syntax13">'</span><span class="syntax13">otherTag</span><span class="syntax13">'</span><span class="syntax18">]</span> <span class="gutter"> 13:</span> error <span class="syntax18">=</span> elementTag.text <span class="syntax18">=</span><span class="syntax18">=</span> <span class="syntax10">nil</span> <span class="syntax18">?</span> <span class="syntax13">"</span><span class="syntax13">"</span> <span class="syntax18">:</span> <span class="syntax13">"</span><span class="syntax18">#{</span>id<span class="syntax18">}</span><span class="syntax13"> </span><span class="syntax13">=</span><span class="syntax13"> </span><span class="syntax18">#{</span>elementTag.text<span class="syntax18">}</span><span class="syntax13">\n</span><span class="syntax13">"</span> <span class="gutter"> 14:</span> <span class="syntax8">if</span> elementAttr <span class="syntax18">=</span> <span class="syntax13">"</span><span class="syntax13">pt</span><span class="syntax13">"</span> <span class="gutterH"> 15:</span> portugueseFile <span class="syntax18"><<</span> error <span class="gutter"> 16:</span> <span class="syntax8">elsif</span> elementAttr <span class="syntax18">=</span><span class="syntax18">=</span> <span class="syntax13">"</span><span class="syntax13">es</span><span class="syntax13">"</span> <span class="gutter"> 17:</span> spanishFile <span class="syntax18"><<</span> error <span class="gutter"> 18:</span> <span class="syntax8">else</span> <span class="gutter"> 19:</span> portugueseFile <span class="syntax18"><<</span> error <span class="gutterH"> 20:</span> <span class="syntax8">end</span> <span class="gutter"> 21:</span> <span class="syntax8">end</span> <span class="gutter"> 22:</span><span class="syntax8">end</span> <span class="gutter"> 23:</span>errorMessagesFile.close<span class="syntax18">(</span><span class="syntax18">)</span> <span class="gutter"> 24:</span>englishFile.close<span class="syntax18">(</span><span class="syntax18">)</span> <span class="gutterH"> 25:</span>spanishFile.close<span class="syntax18">(</span><span class="syntax18">)</span> <span class="gutter"> 26:</span>portugueseFile.close<span class="syntax18">(</span><span class="syntax18">)</span> <span class="gutter"> 27:</span> </span> |
I like to solve this kind of tasks with programming languages (mainly the dynamically-typed ones..) I don’t know very much because it’s an opportunity to put my hands on them! This way I could experience Ruby’s closures syntax, it was really nice and I’m gonna try something new with it often!
*Updated: line 13
