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Tuesday, July 14, 2015

Syntax Highlighter Part 2 , Different Themes


If you haven't read part 2, go here

instead of the pretty print css, use the following css

https://www.dropbox.com/s/2iq1disou9mg2w7/desert.css?dl=0

I have just copied the above css and create a css file. For more themes visit this, themes gallery.
https://code.google.com/p/google-code-prettify/source/browse/trunk/styles/desert.css

lets see an example which is a ruby code
class test
        def test
                return "test"
        end
end

code for above syntax highlighter is below
<pre class="prettyprint">class test
        def test
                return "test"
        end
end
</pre>
<script>prettyPrint()</script>


It is pretty straightforward.

2. Adding Line Numbers
class test
        def test
                return "test"
        end
end

Monday, July 13, 2015

Syntax Highlighter, Introduction

Introduction : Adding Code Highlights
If you are seeing a black background theme, please visit this.

When we often write blogs, we face one problem, the syntax highlighter.

It is very easy to highlight code in browser, just need to add the following two links.
One is a js file and the other is the css file.

https://cdnjs.cloudflare.com/ajax/libs/prettify/r298/prettify.js

https://cdnjs.cloudflare.com/ajax/libs/prettify/r298/prettify.min.css

lets see an example which is a ruby code
class test
        def test
                return "test"
        end
end

code for above syntax highlighter is below
<pre class="prettyprint">class test
        def test
                return "test"
        end
end
</pre>
<script>prettyPrint()</script>


It is pretty straightforward.

2. Adding Line Numbers
class test
        def test
                return "test"
        end
end

code for above syntax highlighter is below
<pre class="prettyprint linenums">
class test
        def test
                return "test"
        end
end
</pre>
<script>prettyPrint()</script>
3. Themes

It is very easy to add themes like a desert theme or some other theme, just need to change the css we are loading. This is shown in another tutorial, as it might interact with the theme of this code.
4. Languages You may use this tool for any language and it autodetects the language for you.
For more information on this tool and updated documentation, go here
Visit Part 2

Sunday, July 12, 2015

Vim Tutor Summary

This is just a summary of 'vimtutor', to go through the whole tutor, just go to shell and type vimtutor

                              Lesson 1 SUMMARY

 1. The cursor is moved using either the arrow keys or the hjkl keys.
        h (left)       j (down)       k (up)       l (right)

 2. To start Vim from the shell prompt type:  vim FILENAME <ENTER>

 3. To exit Vim type:     <ESC>   :q!   <ENTER>  to trash all changes.
            OR type:      <ESC>   :wq   <ENTER>  to save the changes.

 4. To delete the character at the cursor type:  x

 5. To insert or append text type:
        i   type inserted text   <ESC>         insert before the cursor
        A   type appended text   <ESC>         append after the line

NOTE: Pressing <ESC> will place you in Normal mode or will cancel
     an unwanted and partially completed command.

                              Lesson 2 SUMMARY

 1. To delete from the cursor up to the next word type:    dw
 2. To delete from the cursor to the end of a line type:    d$
 3. To delete a whole line type:    dd

 4. To repeat a motion prepend it with a number:   2w
 5. The format for a change command is:
              operator   [number]   motion
    where:
      operator - is what to do, such as  d  for delete
      [number] - is an optional count to repeat the motion
      motion   - moves over the text to operate on, such as  w (word),
                 $ (to the end of line), etc.

 6. To move to the start of the line use a zero:  0

 7. To undo previous actions, type:           u  (lowercase u)
    To undo all the changes on a line, type:  U  (capital U)
    To undo the undo's, type:                 CTRL-R

                              Lesson 3 SUMMARY

 1. To put back text that has just been deleted, type   p .  This puts the
    deleted text AFTER the cursor (if a line was deleted it will go on the
    line below the cursor).

 2. To replace the character under the cursor, type   r   and then the
    character you want to have there.

 3. The change operator allows you to change from the cursor to where the
    motion takes you.  eg. Type  ce  to change from the cursor to the end of
    the word,  c$  to change to the end of a line.

 4. The format for change is:

        c   [number]   motion

                              Lesson 4 SUMMARY

 1. CTRL-G  displays your location in the file and the file status.
            G  moves to the end of the file.
    number  G  moves to that line number.
           gg  moves to the first line.

 2. Typing  /  followed by a phrase searches FORWARD for the phrase.
    Typing  ?  followed by a phrase searches BACKWARD for the phrase.
    After a search type  n  to find the next occurrence in the same direction
    or  N  to search in the opposite direction.
    CTRL-O takes you back to older positions, CTRL-I to newer positions.

 3. Typing  %  while the cursor is on a (,),[,],{, or } goes to its match.

 4. To substitute new for the first old in a line type    :s/old/new
    To substitute new for all 'old's on a line type       :s/old/new/g
    To substitute phrases between two line #'s type       :#,#s/old/new/g
    To substitute all occurrences in the file type        :%s/old/new/g
    To ask for confirmation each time add 'c'             :%s/old/new/gc

                              Lesson 5 SUMMARY

 1.  :!command  executes an external command.

     Some useful examples are:
        (MS-DOS)         (Unix)
         :!dir            :!ls            -  shows a directory listing.
         :!del FILENAME   :!rm FILENAME   -  removes file FILENAME.

 2.  :w FILENAME  writes the current Vim file to disk with name FILENAME.

 3.  v  motion  :w FILENAME  saves the Visually selected lines in file
     FILENAME.

 4.  :r FILENAME  retrieves disk file FILENAME and puts it below the
     cursor position.

 5.  :r !dir  reads the output of the dir command and puts it below the
     cursor position.

                              Lesson 6 SUMMARY

 1. Type  o  to open a line BELOW the cursor and start Insert mode.
    Type  O  to open a line ABOVE the cursor.

 2. Type  a  to insert text AFTER the cursor.
    Type  A  to insert text after the end of the line.

 3. The  e  command moves to the end of a word.

 4. The  y  operator yanks (copies) text,  p  puts (pastes) it.

 5. Typing a capital  R  enters Replace mode until  <ESC>  is pressed.

 6. Typing ":set xxx" sets the option "xxx".  Some options are:
       'ic' 'ignorecase'       ignore upper/lower case when searching
       'is' 'incsearch'        show partial matches for a search phrase
       'hls' 'hlsearch'        highlight all matching phrases
    You can either use the long or the short option name.

 7. Prepend "no" to switch an option off:   :set noic

                             Lesson 7 SUMMARY

 1. Type  :help  or press <F1> or <Help>  to open a help window.

 2. Type  :help cmd  to find help on  cmd .

 3. Type  CTRL-W CTRL-W  to jump to another window

 4. Type  :q  to close the help window

 5. Create a vimrc startup script to keep your preferred settings.

 6. When typing a  :  command, press CTRL-D to see possible completions.
    Press <TAB> to use one completion.