From: Paul Shapiro <fightoplankton@...>
Date: 2009-06-15T14:37:07+09:00
Subject: Re: Help Handling CSV Columns

James Gray wrote:
> On Jun 14, 2009, at 6:31 PM, Paul Shapiro wrote:
> 
>> I have been struggling for days on just the first part of this script.
>> Please help! I need to add the ability to delete the last column of  
>> each
>> csv, which vary in their lengths.
> 
> I'm not familiar with rio, but the process using most CSV parsers
> would be:
> 
> * Write a loop that reads and writes CSV (copies it effectively)
> * Instead of writing the whole row, just write all the fields but the
> last one with something like:  row[0..-2]
> 
> I hope that helps.
> 
> James Edward Gray II

THANK YOU SO MUCH!!!

require 'rubygems'
require 'roo'
require 'csv'
require 'fileutils'
require 'rio'
require 'fastercsv'

FileUtils.mkdir_p "/Users/pshapiro/Desktop/Excel/xls"
FileUtils.mkdir_p "/Users/pshapiro/Desktop/Excel/tmp"
FileUtils.mkdir_p "/Users/pshapiro/Desktop/Excel/csv"

@filesxls = Dir["/Users/pshapiro/Desktop/Excel/*.xls"]
for file in @filesxls
  FileUtils.move(file,"/Users/pshapiro/Desktop/Excel/xls")
end

@filesxls = Dir["/Users/pshapiro/Desktop/Excel/xls/*.xls"]
@filetmp = Dir["/Users/pshapiro/Desktop/Excel/xls/*.xls_tmp"]

for file in @filesxls
  convert = Excel.new(file)
  convert.default_sheet = convert.sheets[0]
  convert.to_csv(file+"_tmp")
end

@filestmp = Dir["/Users/pshapiro/Desktop/Excel/xls/*.xls_tmp"]

for file in @filestmp
  FileUtils.move(file,"/Users/pshapiro/Desktop/Excel/tmp")
end

dir = "/Users/pshapiro/Desktop/Excel/tmp/"
files = Dir.entries(dir)
files.each do |f|
next if f == "." or f == ".."
oldFile = dir + "/" + f
newFile = dir + "/" + File.basename(f, '.*')
File.rename(oldFile, newFile)
end

files = Dir.entries(dir)
files.each do |f|
next if f == "." or f == ".."
oldFile = dir + "/" + f
newFile = dir + "/" + f + ".csv"
File.rename(oldFile, newFile)
end

@filescsv = Dir["/Users/pshapiro/Desktop/Excel/tmp/*.csv"]

for file in @filescsv
  FileUtils.move(file,"/Users/pshapiro/Desktop/Excel/csv")
end

FileUtils.rm_rf("/Users/pshapiro/Desktop/Excel/tmp")

@filescsv = Dir["/Users/pshapiro/Desktop/Excel/csv/*.csv"]

for file in @filescsv
  5.times {
  text=""
  File.open(file,"r"){|f|f.gets;text=f.read}
  File.open(file,"w+"){|f| f.write(text)}
  }
end

dir = "/Users/pshapiro/Desktop/Excel/csv/"
files = Dir.entries(dir)
files.each do |f|
next if f == "." or f == ".."
oldFile = dir + "/" + f
newFile = dir + "/" + File.basename(f, '.*') + ".tmp"
File.rename(oldFile, newFile)
end

@filescsv = Dir["/Users/pshapiro/Desktop/Excel/csv/*.tmp"]

for file in @filescsv
  csv = FasterCSV.read(file, :headers => true)
  lastc = csv.headers.length-1
  puts lastc
  rio(file).csv.skipcolumns(1..2,lastc) > rio(file+".csv").csv(',')
end

@filescsv = Dir["/Users/pshapiro/Desktop/Excel/csv/*.tmp"]

for file in @filescsv
  FileUtils.remove(file)
end

dir = "/Users/pshapiro/Desktop/Excel/csv"
files = Dir.entries(dir)
files.each do |f|
next if f == "." or f == ".."
oldFile = dir + "/" + f
newFile = dir + "/" + File.basename(f, '.*')
File.rename(oldFile, newFile)
end

2.times {
files = Dir.entries(dir)
files.each do |f|
next if f == "." or f == ".."
oldFile = dir + "/" + f
newFile = dir + "/" + File.basename(f, '.*')
File.rename(oldFile, newFile)
end
}

files = Dir.entries(dir)
files.each do |f|
next if f == "." or f == ".."
oldFile = dir + "/" + f
newFile = dir + "/" + f + ".csv"
File.rename(oldFile, newFile)
end
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