I'm using the following code to try and get all files from ftp using Ruby.
files = ftp.list()
files.each do |file|
ftp.gettextfile(file)
end
The problem is ftp.list returns a whole line of information, not just the filename e.g.
-rw-r--r-- 1 ftp ftp 0 May 31 11:18 brett.txt
How do I extract the filname from this string?
Many thanks
You can use the nlst public method like this
files = ftp.nlst("*.zip")|ftp.nlst("*.txt")|ftp.nlst("*.xml")
#optionally exclude falsely matched files
exclude = /\.old|temp/
#exclude files with 'old' or 'temp' in the name
files = files.reject{ |e| exclude.match e } #remove files matching the exclude regex
files.each do |file|
#do something with each file here
end
If you want to process the output of ftp.list you may find net-ftp-list useful.
However, list appears to be useful, as you can pass in a matching pattern, which it doesn't appear that nlst supports. I just did a quick-and-dirty hack to make list output work:
ftp.list("*.zip") do |zipfile|
zipfile = zipfile.split(/\s+/).last
# ... do something with the file
end
Related
I have the following code to connect my rails app to my FTP. This works great. However, I want to use open-uri to open the csv file so I can parse it. Any ideas how to do this? I think it's an easy thing to do but I'm missing something.
require 'net/ftp'
ftp = Net::FTP.new
ftp.connect("xxx.xxx.xx.xxx",21)
ftp.login("xxxxx","xxxx")
ftp.chdir("/")
ftp.passive = true
puts ftp.list("TEST.csv")
You'll need to use #gettextfile.
A) Get the file to a local temporary file and read its content
# Creating a tmp file can be done differently as well.
# It may also be omitted, in which case `gettextfile`
# will create a file in the current directory.
Dir::Tmpname.create(['TEST', ['.csv']) do |file_name|
ftp.gettextfile('TEST.csv', file_name)
content = File.read(file_name)
end
B) Pass a block to gettextfile and get the content one line at a time
content = ''
ftp.gettextfile('TEST.csv') do |line|
content << line
end
I need to write a script in Ruby to rename all *.htm files to *.html in a given
directory.
I've been given a script with some pieces missing.
I need to "METHOD" with the appropriate method name and "REGEX" with an appropriate
regular expression to match all the files that end in .htm.
Dir.METHOD("*.htm").each do |html_file|
FileUtils.METHOD html_file, "#{html_file.METHOD(/REGEX/,'.html')}"
end
Does anyone know what I should replace "METHOD" and "REGEX" with?
Dir.glob("*.htm") do |html_file|
FileUtils.mv(html_file, "#{File.basename(html_file, ".htm")}.html")
end
Dir.glob("*.htm").each do |html_file|
FileUtils.mv html_file, "#{html_file.sub(/.htm/,'.html')}"
end
Here's how I did it though it did not use a FileUtils method and I skipped ahead and did string manipulation before it was discussed in the lessons.
Dir.glob("*.htm") {|old_filename| #Save file names w/ .htm to old_
tmp_filename = old_filename.slice(0..-5) #Remove (.htm) the file extension
new_filename = tmp_filename + '.html' #Append the .html extension
puts new_filename #Display renamed file names
}
I'm new to ruby. Actually I'm trying to create an empty file "myfile.txt" in each of the following directories:
../../../../../TESTS/Test_A/myTest_A/
../../../../../TESTS/Test_B/myTest_B/
../../../../../TESTS/Test_C/myTest_C/
../../../../../TESTS/Test_D/myTest_D/
As you can see, the name of the Top directory is "TEST" and than after this, every directory have a different name but starts with "Test_", and than each "Test_*" directory contains only one directory and there my file should go in. I'm trying something like this:
require 'pathname'
def create_myFile
pn = Pathname.new('../../../../../TESTS/Test_*/**')
myFile = File.new("#{pn}/myFile.txt", "w+")
end
create_myFile
It doesn't work. Any suggestions?
Pathname does not accept wildcards. Dir#[] does:
Dir['../../../../../TESTS/Test_*/**'].each do |dir|
File.new File.join(dir, 'myFile.txt'), 'w+'
end
I want to create a temporary .zip in rails. For creating zip file I am using rubyzip gem.
Currently I am doing this:
zfname = Tempfile.new(['somename','.zip'], Rails.root.to_s + '/tmp/')
Zip::ZipFile.open(zfname.path, Zip::ZipFile::CREATE) do |zipfile|
zipfile.add(file, basepath + file)
end
This generates following error:
Zip::ZipError: Zip end of central directory signature not found
Is it possible to use Tempfile for zip? If yes, what is wrong here?
In my rails app when I needed to send zip files to user, I just stored them in a buffer and used 'send data' method in controller.
I was trying to use 'Tempfile' initially but it had an added task of removing zip files after sending it to user which is a pain.
Is this something you are looking for?
Zip::OutputStream.write_buffer do |stream|
file_paths.each_with_index do |file_path, index|
# rename the pdf
stream.put_next_entry("#{name}-#{index + 1}.pdf")
# add pdf to zip
stream.write IO.read(file_path)
end
end
So it doesn't actually look like you need or want a Tempfile. You really want a random path in the Rails.root/tmp directory. Try something like this:
zfpath = Rails.root.join('tmp', "somename-#{SecureRandom.hex(8)}.zip"
Zip::ZipFile.open(zfpath, Zip::ZipFile::CREATE) do |zipfile|
zipfile.add(file, basepath + file)
end
Update:
While it's far more complex, you can find a discussion of how to do this with a Tempfile here - http://thinkingeek.com/2013/11/15/create-temporary-zip-file-send-response-rails/ .
So basically I am creating a bunch of zip files which contains a pwe and pws files inside it.
The following code generates a bunch of zip files which is named as orgname_org_member_orguser1.zip
which contains 2 files(a pws and pwe)
#successful_orgs.each do |org|
file = "#{RAILS_ROOT}/my-data/#{org[:location]}_#{org[:member]}_#{org[:username]}.zip"
generate_file(ups_file, org)
end
def generate_file(file, org)
zipfile = Zip::ZipFile.open(file, Zip::ZipFile::CREATE)
pwe_text, pws_text = MyGenerator.password
pwe_file = "#{RAILS_ROOT}/tmp/#{org[:location]}_#{org[:member]}.pwe"
pws_file = "#{RAILS_ROOT}/tmp/#{org[:location]}_#{org[:member]}.pws"
File.open(pwe_file, 'w') { |file| file.write(pwe_text) }
File.open(pws_file, 'w') { |file| file.write(pws_text) }
zipfile.add("#{org[:location]}_#{org[:member]}.pwe", pwe_file)
zipfile.add("#{org[:location]}_#{org[:member]}.pws", pws_file)
zipfile.close
File.delete(pwe_file)
File.delete(pws_file)
end
I want to let the code do what is doing(create the zip files and store it the specified path)
But in addition to the above, I also want to create another zip file called all.zip which would contain all the zip files created above.
Meaning, all.zip => file1.zip, file2.zip etc
I am not sure how to incoporate that logic in my code above. Any help would be appreciated.
EDIT: I do not want to search and add all the files in the directory. I want to add only the zip files created during the above code.
You can collect all the zip file paths in an array and then add them to a new zip file iteratively:
zip_files = []
#successful_orgs.each do |org|
file = "#{RAILS_ROOT}/my-data/#{org[:location]}_#{org[:member]}_#{org[:username]}.zip"
zip_files << file
generate_file(file, org)
end
all_zipped = Zip::ZipFile.open("#{RAILS_ROOT}/tmp/all.zip", Zip::ZipFile::CREATE)
zip_files.each do |f|
all_zipped.add(zip_file)
end
Note that you're not going to gain any additional compression by doing this.