File: utils-download.R

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# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
# GNU Library General Public License for more details.
#
# You should have received A copy of the GNU Library General 
# Public License along with this library; if not, write to the 
# Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, 
# MA  02111-1307  USA


################################################################################
# FUNCTION:               DESCRIPTION:
#  composeURL              Compose URL from partial strings
#  indexGrep               Greps Lines given a pattern
################################################################################


composeURL <- 
    function(..., prefix = "http://")
{
    # A function implemented by Diethelm Wuertz
    
    # Description:
    #   Compose URL from partial strings
    
    # FUNCTION:
    
    # Return Value:
    paste(prefix, ..., sep = "")
}


# ------------------------------------------------------------------------------


indexGrep <- 
    function(pattern, x, ...)
{
    # A function implemented by Diethelm Wuertz
    
    # Description:
    #   Greps Lines given a pattern
    
    # FUNCTION:
    
    # Return Value:
    x[grep(pattern, x, ...)]
}


################################################################################