Re: script to insert lines

Hi eda!

On Mo, 20 Feb 2012, eda wizard wrote:

> Greetings all,
>
> I've got lots of Java classes whose fields need Xml attributes - sounds like a perfect job for a Vim script!
>
> Given some lines like:
>
> private String lName;
> private String fName;
> private String eAddr;
> private int age;
>
> I need the script to produce
>
> @XmlElement(name = "LName")
> private String lName;
> @XmlElement(name = "FName")
> private String fName;
> @XmlElement(name = "EAddr")
> private String eAddr;
> @XmlElement(name = "Age")
> private int age;
>
> so within the for-loop of my function I need to read each line, extract the field name, tweak it a bit, add the fieldname to a new string and insert that string on a newline before the line in the buffer.

You can probably also loop over the buffer contents, but for your
example a "simple" :g command would suffice. Let's see:
1) for each line, that starts with "private" followed by a word:
:g/^\s*private \w\+/
2) substitute the current line:
:s/\%(\w\+\s\+\)\{2}\(\w\)\(\w\+\);$/
3) by modifying the contents and putting it in front of it:
@xmlElement(name = "\u\1\2")\r&/

Together, this makes:
:g/^\s*private \w\+/s/\%(\w\+\s\+\)\{2}\(\w\)\(\w\+\);$/@xmlElement(name = "\u\1\2")\r&/

regards,
Christian

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