explode_implode

Two functions: split string into pieces, join strings with delimiter in between.

Description

%EXPLODE Splits string into pieces.
% EXPLODE(STRING,DELIMITERS) returns a cell array with the pieces
% of STRING found between any of the characters in DELIMITERS.
%
% [SPLIT,NUMPIECES] = EXPLODE(STRING,DELIMITERS) also returns the
% number of pieces found in STRING.
%
% Input arguments:
% STRING - the string to split (string)
% DELIMITERS - the delimiter characters (string)
% Output arguments:
% SPLIT - the split string (cell array), each cell is a piece
% NUMPIECES - the number of pieces found (integer)
%
% Example:
% STRING = 'ab_c,d,e fgh'
% DELIMITERS = '_,'
% [SPLIT,NUMPIECES] = EXPLODE(STRING,DELIMITERS)
% SPLIT = 'ab' 'c' 'd' 'e fgh'
% NUMPIECES = 4
%
% See also IMPLODE, STRTOK
%
% Created: Sara Silva ([e-mail]) - 2002.04.30

%IMPLODE Joins strings with delimiter in between.
% IMPLODE(PIECES,DELIMITER) returns a string containing all the
% strings in PIECES joined with the DELIMITER string in between.
%
% Input arguments:
% PIECES - the pieces of string to join (cell array), each cell is a piece
% DELIMITER - the delimiter string to put between the pieces (string)
% Output arguments:
% STRING - all the pieces joined with the delimiter in between (string)
%
% Example:
% PIECES = {'ab','c','d','e fgh'}
% DELIMITER = '->'
% STRING = IMPLODE(PIECES,DELIMITER)
% STRING = ab->c->d->e fgh
%
% See also EXPLODE, STRCAT
%
% Created: Sara Silva ([e-mail]) - 2002.08.25
% Modified: Sara Silva ([e-mail]) - 2005.03.11
% - implode did not work if the delimiter was whitespace, so
% line 36 was replaced by line 37.
% - thank you to Matthew Davidson for pointing this out
% (and providing the solution!)

• Acknowledgements: This submission has inspired the following:; rsplit
• MATLAB release: MATLAB 5.2 (R10)

[Fahad Al Mahmood]

Very simple yet very useful function indeed! Great job ....

[Michaela Mitschke]

Works perfect - what a convenient idea to pass strings around in function arguments!

(Especially when those are then calling external skripts, with a varying number of arguments...)

[Kester Allen]

Great implementation!

[Janine Campbell]

Very useful.

[Ratnakar Vejella]

Just what i wanted, thanks so much

[John Dorian]

Very good, thanks!

[Jos x@y.z]

These files can be easily vectorized.

Implode.m:
P = PIECES(:)' ;
P(2,:) = {DELIMITER} ;
P{2,end} = [] ;
string = sprintf('%s',P{:})

explode.m:
SPLIT = strread(STRING,'%s','delimiter','DELIMITER') ;

[Zhiqiang Zhang]

SPLIT = strread(STRING,'%s','delimiter','DELIMITER') ;
doesn't work well. It trum off the space at the beginning of the pieces.