NSIS/Include/StrFunc.txt

String Functions Header File Readme
-----------------------------------

String Functions Header File contains a set of good string manipulation
functions in a much simpler way to include and call in NSIS scripts.

How to use
----------

  Basic Syntax
  ------------

  Parameters are specified in this format:
  required (required) (option1 | option2) [optional]

  The stars in command titles (*****) are the function usefulness in my
  opinion. The more starts, the most useful it is. 5 stars (*****) is much
  useful.

  Any time when is mentioned "Default is" means that you can use the value
  mentioned or keep it blank, the result is the same.

  If you want a certain value (e.g. a text) to be language-specific, set a
  language string (using LangString) and define $(STRINGNAME) as value.

  If you want to add ` to a string, you should always escape it using $\`
  because the header file macro functions use ` to separate parameters.

  1. Include Header file
  ----------------------

    !include "StrFunc.nsh"

    StrFunc.nsh has to be inside Include directory, so you don't have to
    specify a path.

    You have to put this command before any command used in this header file.

  2. Commands
  -----------

  Some commands have special specifications to work. Consult command's
  documentation on "2.3 Commands" section.

    2.1 How To Use Commands In Install Sections and Functions
    ---------------------------------------------------------

    Every command used in install sections and functions have to be called
    first before and out of any sections and functions, and without
    parameters.

    Example:
    --------

    !include "StrFunc.nsh"

    ${StrStr}

    Section

      ${StrStr} $0 "OK! Now what?" "wh"

    SectionEnd
    
    2.2 How To Use Commands In Uninstall Sections and Functions
    -----------------------------------------------------------

    Commands with Uninstall Sections and Functions support have "Un" before
    the words inside brackets "{}".

    Example:
    --------
    
    ${UnStrStr}
    
    Every command used in uninstall sections and functions have to be called
    first before and out any sections and functions, without parameters, and
    after the header command "${UnStrFunc}" to activate the Uninstall
    sections and functions support for the commands following.
    
    Example:
    --------

    !include "StrFunc.nsh"

    ${StrStr} # Supportable for Install Sections and Functions
    
    ${UnStrFunc} # Command to separate commands supportable for
                 # Install/Uninstall sections and functions

    ${UnStrStr} # Supportable for Uninstall Sections and Functions

    Section

      ${StrStr} $0 "OK! Now what?" "wh"

    SectionEnd
    
    Section Uninstall

      ${UnStrStr} $0 "OK! Now what?" "wh"

    SectionEnd
    
    2.3 Commands
    ------------

    =========================================================================
    ****                                                           ${StrCase}
    -------------------------------------------------------------------------
    ResultVar String Type(Lower|Upper|Title|Sentence (Case))
    =========================================================================
    Converts "String" to "Type" Case.

    Parameters:

      ResultVar
      Destination where result is returned.

      String
      String to convert to "Type" case.
      
      Type
      Type of string case to convert to:
      
        - Lower Case (this is just an example. however this can be useful.)
        - Upper Case (THIS IS JUST AN EXAMPLE. HOWEVER THIS CAN BE USEFUL.)
        - Title Case (This Is Just An Example. However This Can Be Useful.)
        - Sentence Case (This is just an example. However this can be
          useful.)
        
      Default value is "Setence Case".

    Result Value -> ResultVar:

      "String" in "Type" case.

    Example:

      ${StrCase} $0 "That's gonna hurt!" "Upper Case"

      $0 = "THAT'S GONNA HURT!"

    =========================================================================
    ****                                                         ${StrClbSet}
    -------------------------------------------------------------------------
    String
    =========================================================================
    Copy "String" to clipboard.

    Parameters:

      String
      String to put in the clipboard.

    =========================================================================
    ****                                                         ${StrClbGet}
    -------------------------------------------------------------------------
    ResultVar
    =========================================================================
    Get a string from the clipboard and return it to "ResultVar".

    Parameters:

      ResultVar
      Destination where result is returned.

    Result Value -> ResultVar:

      The string found in clipboard.

    =========================================================================
    *****                                                      ${StrIOToNSIS}
    -------------------------------------------------------------------------
    ResultVar String
    =========================================================================
    Convert "String" from Install Options plugin to be supported by NSIS.
    Escape, back-slash, carriage return, line feed and tab characters are
    converted.

    Parameters:

      ResultVar
      Destination where result is returned.

      String
      String to convert to be supportable for NSIS.

    Result Value -> ResultVar:

      "String" supportable for NSIS.

    Example:

      ${StrIOToNSIS} $0 "\r\n\t\\This is just an example\\"

      $0 = "$\r$\n$\t\This is just an example\"

    =========================================================================
    **                                                              ${StrLoc}
    -------------------------------------------------------------------------
    ResultVar String StrToSearchFor OffsetDirection(>|<)
    =========================================================================
    Searches for "StrToSearchFor" in "String" and returns its location,
    according to "OffsetDirection".

    Parameters:

      ResultVar
      Destination where result is returned.

      String
      String where to search "StrToSearchFor".

      StrToSearchFor
      String to search in "String".

      OffsetDirection(>|<)
      Direction where the counter goes to. Default is ">".
      (> = left to right, < = right to left)

    Result Value -> ResultVar:

      Where "StrToSearchFor" is, according to "OffsetDirection".

    Example: 

      ${StrLoc} $0 "This is just an example" "just" "<"

      $0 = "11"

    =========================================================================
    *****                                                      ${StrNSISToIO}
    -------------------------------------------------------------------------
    ResultVar String
    =========================================================================
    Converts "String" from NSIS to be supported by Install Options plugin.
    Escape, back-slash, carriage return, line feed and tab characters are
    converted.

    Parameters:

      ResultVar
      Destination where result is returned.

      String
      String to convert to be supportable for Install Options plugin.

    Result Value -> ResultVar:

      "String" supportable for Install Options plugin.

    Example:

      ${StrNSISToIO} $0 "$\r$\n$\t\This is just an example\"

      $0 = "\r\n\t\\This is just an example\\"
      
    =========================================================================
    *****                                                           ${StrStr}
    -------------------------------------------------------------------------
    ResultVar String StrToSearchFor
    =========================================================================
    Searches for "StrToSearchFor" in "String".

    Parameters:

      ResultVar
      Destination where result is returned.

      String
      String where to search "StrToSearchFor".

      StrToSearchFor
      String to search in "String".

    Result Value -> ResultVar:

      "StrToSearchFor" + the string after where it was found in "String".

    Example: 

      ${StrStr} $0 "This is just an example" "just"

      $0 = "just an example"

    =========================================================================
    *****                                                        ${StrStrAdv}
    -------------------------------------------------------------------------
    ResultVar String StrToSearchFor SearchDirection(>|<)
    ResultStrDirection(>|<) DisplayStrToSearch(1|0) Loops
    =========================================================================
    Searches for "StrToSearchFor" in "String" in the direction specified by
    "SearchDirection" and looping "Loops" times.

    Parameters:

      ResultVar
      Destination where result is returned.

      String
      String where to search "StrToSearchFor".

      StrToSearchFor
      String to search in "String".

      SearchDirection (>|<)
      Where do you want to direct the search. Default is ">" (to right).
      (< = To left, > = To right)

      ResultStrDirection (>|<)
      Where the result string will be based on in relation of
      "StrToSearchFor"
      position. Default is ">" (to right). (< = To left, > = To right)

      DisplayStrToSearch (1|0)
      Display "StrToSearchFor" in the result. Default is "1" (True).
      (1 = True, 0 = False)

      Loops
      Number of times the code will search "StrToSearchFor" in "String" not
      including the original execution. Default is "0" (1 code execution).


    Result Value -> ResultVar:

      "StrToSearchFor" if "DisplayStrToSearch" is 1 + the result string after
      or before "StrToSearchFor", depending on "ResultStrDirection".

    Result with Errors:

      When "StrToSearchFor" was not found, will return an empty string.

      When you put nothing in "StrToSearchFor", will return "String" and set
      error flag.

      When you put nothing in "String", will return an empty string and set
      error flag.

    Example: 

      ${StrStrAdv} $0 "This is just an example" "is" "<" "<" "1" "1"

      $0 = "This"

    =========================================================================
    *****                                                           ${StrRep}
    -------------------------------------------------------------------------
    ResultVar String StrToReplace ReplacementString
    =========================================================================
    Searches for all "StrToReplaceFor" in "String" replacing those with
    "ReplacementString".

    Parameters:

      ResultVar
      Destination where result is returned.

      String
      String where to search "StrToReplaceFor".

      StrToReplaceFor
      String to search in "String".

      StringToBeReplacedWith
      String to replace "StringToReplace" when it is found in "String".

    Result Value -> ResultVar:

      "String" with all occurences of "StringToReplace" replaced with
      "ReplacementString".

    Example: 

      ${StrRep} $0 "This is just an example" "an" "one"

      $0 = "This is just one example"

    =========================================================================
    *****                                                          ${StrSort}
    -------------------------------------------------------------------------
    ResultVar String CenterStr LeftStr RightStr IncludeLeftRightStr(1|0)
    IncludeCenterStr(1|0)
    =========================================================================
    Searches for "CenterStr" in "String", and returns only the value
    between "LeftStr" and "RightStr", including or not the "CenterStr" using
    "IncludeCenterStr" and/or the "LeftStr" and "RightStr" using
    "IncludeLeftRightStr".

    Parameters:

      ResultVar
      Destination where result is returned.

      String
      String where to search "CenterStr".

      CenterStr
      String to search in "String".

      LeftStr
      The first occurrence of "LeftStr" on the left of "CenterStr".
      If it is an empty value, or was not found, will return
      everything on the left of "CenterStr".

      RightStr
      The first occurrence of "RightStr" on the right of "CenterStr".
      If it is an empty value, or was not found, will return
      everything on the right of "CenterStr".

      IncludeLeftRightStr(1|0)
      Include or not the "LeftStr" and "RightStr" in the result value.
      Default is 1 (True). (1 = True, 0 = False)

      IncludeCenterStr(1|0)
      Include or not the "CenterStr" in the result value. Default is 1
      (True). (1 = True, 0 = False)

    Result Value -> ResultVar:

      String between "LeftStr" and "RightStr" of a found "CenterStr"
      including or not the "LeftStr" and "RightStr" if
      "IncludeLeftRightStr" is 1 and/or the "CenterStr" if
      "IncludeCenterStr" is 1.

    Example: 

      ${StrSort} $0 "This is just an example" " just" "" "ple" "0" "0"

      $0 = "This is an exam"

    =========================================================================
    *****                                                           ${StrTok}
    -------------------------------------------------------------------------
    ResultVar StrToTokenize Separators ResultPart SkipEmptyParts(1|0)
    =========================================================================
    Returns the part "ResultPart" between two "Separators" inside
    "StrToTokenize".

    Parameters:

      ResultVar
      Destination where result is returned.

      StrToTokenize
      String where to search for "Separators".

      Separators
      Characters to find in "StrToTokenize".

      ResultPart
      The part want to be found in "StrToTokenize" between two "Separators".
      Can be any number, starting at 1, and "L" that is the last part.
      Default is L.

      SkipEmptyParts(1|0)
      Skips empty string parts between two "Separators". Default is 1 (True).
      (1 = True, 0 = False)

    Result Value -> ResultVar:

      "StrToTokenize" part "Part" between two "Separators".

    Examples: 

      1) ${StrTok} $0 "This is, or is not, just an example" " ," "5" "1"

         $0 = "not"

      2) ${StrTok} $0 "This is, or is not, just an example" " ," "5" "0"

         $0 = "is"

    =========================================================================
    *                                                      ${StrTrimNewLines}
    -------------------------------------------------------------------------
    ResultVar String
    =========================================================================
    Deletes unnecessary new lines at end of "String".

    Parameters:

      ResultVar
      Destination where result is returned.

      String
      String where to search unnecessary new lines at end of "String".

    Result Value -> ResultVar:

      "String" with unnecessary end new lines removed.

    Example:

      ${StrTrimNewLines} $0 "$\r$\nThis is just an example$\r$\n$\r$\n"

      $0 = "$\r$\nThis is just an example"

Comments about functions included and not included
--------------------------------------------------

12 functions have been included
  6 were included as are in Archive
  6 were not included in Archive
    StrTok (AdvStrTok)
    StrLoc
    StrSort (AdvStrSort)
    StrCase
    NSISToIO
    IOToNSIS

13 functions have not been included
  10 were not included because of better functions
    6 were not included because of AdvStrTok (called here as StrTok)
      First String Part Function
      Save on Variables Function
      Sort Strings (1, 2 and 3) Functions
      StrTok Function
    2 were not included because of StrCase
      StrLower Function
      StrUpper Function
    1 was not included because of NSISToIO and IOToNSIS
      Convert / to // in Paths Function
    1 was not included because of original String Replace Function (called
      here as StrRep)
      Another String Replace Function
  2 were not included because isn't useful anymore
    Slash <-> Backslash Converter Function
    Trim Function
  1 was not included because of bugs
    Number to String Converter Function

Comments
------------------------------------------------------------

Advanced Token String Function

  New function not published in Archive, much better than original StrTok,
  going to replace several functions with just one. The principal idea was
  based on "Save On Variables" by Afrow UK.

Advanced String Sort Function

  New function not published in Archive, much better than original StrSort.

Another String Replace Function

  Another doesn't mean better and simpler than the original version.
  (Don't confuse the original StrRep that is in this header file with this
  one)

Convert / to // in Paths Function

  StrNSISToIO and StrIOToNSIS are better.

First String Part Function

  AdvStrTok (called here as StrTok) is better.

NSIS <-> Install Options String Convertor Functions

  Included from Install Options Readme.

Number to String Converter Function

  A buggy one, needs to be remade.

Save on Variables Function

  AdvStrTok (called here as StrTok) is better.

Slash <-> Backslash Converter Function

  Will convert "http://www.site.com\" to "http:\\www.site.com/", not
  really useful for anyone.

Sort Strings (1, 2 and 3) Functions

  AdvStrTok (called here as StrTok), AdvStrStr (called here as StrStrAdv)
  and AdvStrSort (called here as StrSort) are better.

Split String Function

  AdvStrTok (called here as StrTok) is better.

StrTok Function

  AdvStrTok (called here as StrTok) is better.

Trim Function

  The real purpose of this function was to remove spaces from directory
  paths, and now with the NSIS command GetFullPathName this is not useful
  anymore.

Version History
---------------

1.06 - 03/26/2004

- StrNumToStr removed due to complex number handling on some languages.
- Fixed the bug where the old string was attached to string returned by
  StrCase when $R5 variable was used.

1.05 - 03/17/2004

- Fixed a bug with StrCase, Title Case wasn't working as should be.
- Fixed a bug with StrStrAdv, previous fix created another bug, string not
  returned correctly when using backwards search with "DisplayStrToSearch" as
  "0".

1.04 - 03/07/2004

- Added new StrCase, removed StrLower and StrUpper.
- Organized by name commands inside header and readme files.

1.03 - 02/12/2004

- Added commands support for uninstall sections and functions.
- Fixed variables switch in "StrLoc" and "StrTok" after using these.

1.02 - 02/07/2004

- Fixed StrLoc.
- Fixed Documentation about StrLoc. "Direction" is really "OffsetDirection".
- Added my new AdvStrSort, and removed the old one.

1.01 - 02/05/2004

- Fixed Documentation about StrSort and StrTok.
- Fixed StrTok default value for the string part. Now it's "L".
- Fixed StrStrAdv fixed wrong search when had a combination of same
  substrings one after another in a string.
- Fixed StrLoc, when a string isn't found, don't return any value at all.

1.00 - 02/01/2004

- Added documentation.
- Renamed header file to "StrFunc.nsh".
- Added 1 function, StrLoc.
- Modified StrStrAdv, removed some lines.
- Fixed StrTok, 2 simple numbers made it loop every time.
- Fixed some small issues in the header file.

0.02 - 01/24/2004

  - Completed StrFunc.nsh file. Need some tests and the readme.

0.01 - 01/22/2004

  - First version to test ideas...

Credits
-------

Made by Diego Pedroso (aka deguix).

Functions Credits
-----------------

- Advanced Search in String, Advanced Token String, Localize in String,
String Case, Advanced Sort String, made by Diego Pedroso.
- Copy to/from clipboard made by Nik Medved.
- StrReplace made by Hendri Adriaens.
- Search in a string, Trim newlines made by Ximon Eighteen.
- NSISToIO and IOToNSIS made by Amir Szekely, Joost Verburg and Dave Laundon.

License
-------

This header file is provided 'as-is', without any express or implied
warranty. In no event will the author be held liable for any damages
arising from the use of this header file.

Permission is granted to anyone to use this header file for any purpose,
including commercial applications, and to alter it and redistribute
it freely, subject to the following restrictions:

1. The origin of this header file must not be misrepresented;
   you must not claim that you wrote the original header file.
   If you use this header file in a product, an acknowledgment in the
   product documentation would be appreciated but is not required.
2. Altered versions must be plainly marked as such,
   and must not be misrepresented as being the original header file.
3. This notice may not be removed or altered from any distribution.