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POafter matching pattern how to add dash after string in perl.regex
 

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  1. POafter matching pattern how to add dash after string in perl.regex
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    <p>i have this type of data: please help me out i am new to regular expressions,and please explain each step while answering.thanks..</p> <pre><code>7210315_AX1A_1X50_LI_MOTORTRAEGER_VORN_AUSSEN 7210316_W1A_1X50_RE_MOTORTRAEGER_VORN_AUSSEN 7210243_U1A_1X50_LI_MOTORTRAEGER_VORN_INNEN 7210330_AV21NA_ABSTUETZUNG_STUETZTRAEGER_RAD </code></pre> <p>i want to extract only this data from above lines:</p> <pre><code>7210315_AX1A_MOTORTRAEGER_VORN_AUSSEN 7210316_W1A_MOTORTRAEGER_VORN_AUSSEN 7210243_U1A_MOTORTRAEGER_VORN_INNEN 7210330_AV21NA_ABSTUETZUNG_STUETZTRAEGER_RAD </code></pre> <p>then if <em>AX1A</em> contains two consecutive alphabets after underscore ,it should be written as AX_ , and if contains single digit and single alphabet then they become as -1_ and -A_ so after applying this pattern it will become: AX_-1_-A_ and all other data should be remain same.</p> <p>similarly in next line "W1A" so firstly it contains single alphabet "W" which should be converted to -W_ now next character is a single digit so it should also be converted as same pattern -1_ similarly last one is also treated same.so it become -W_-1_-A_</p> <p>we are only interested in applying regex to the part after digits followed by underscore.</p> <pre><code>_AX1A_ _W1A_ _U1A_ _AV21NA_ </code></pre> <p>output should be:</p> <pre><code>7210315_AX_-1_-A_MOTORTRAEGER_VORN_AUSSEN 7210316_-W_-1_-A_MOTORTRAEGER_VORN_AUSSEN 7210243_-U_-1_-A_MOTORTRAEGER_VORN_INNEN 7210330_AV_21_NA_ABSTUETZUNG_STUETZTRAEGER_RAD </code></pre>
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