I'm running the following commands
set full_pin_name [format "%s %s" $top_cell $encoded_name]
puts "full_pin_name is $full_pin_name"
and I get the following error:
full_pin_name is invalid command name "A" B
when top_cell equals A and encoded_name equals B.
Why is this happening?
I suspect the problem is with your $top_cell variable, which has the value invalid command name "A". To check, try the following line before your format line:
puts ">$top_cell<"
If indeed, $top_cell value has a problem, you can then trace back to the last set command. Let us know if it fixes your problem, or we might try some other approaches.
Try repeating this in a plain Tcl shell, it works. Something is different in your Tcl shell.
Try
info body set
and
info body format
If either report something other than set isn't a procedure or format isn't a procedure then you have your culprit.
May be this code runs in a namespace which has the set command defined in it?
To demonstrate:
% namespace eval foo {
proc set args {
puts hey!
}
proc whatever {top_cell encoded_name} {
set full_pin_name [format "%s %s" $top_cell $encoded_name]
puts "full_pin_name is $full_pin_name"
}
}
% ::foo::whatever A B
hey!
can't read "full_pin_name": no such variable
%
As far as I can tell without a TCL interpreter here it should work assuming a normal interpreter with format defined. so it looks like maybe format has been renamed or doesn't exist as a command in the interpreter you are using?
To get you going you don't really need format to join strings anyway
set fill_pin_name "$top_cell $encoded_name"
should so what you need
Maybe your code looks like this:
set encoded_name B
if { [catch {[A]} top_cell]} {
set full_pin_name [format "%s %s" $top_cell $encoded_name]
puts "full_pin_name is $full_pin_name"
}
The result is:
full_pin_name is invalid command name "A" B
Related
I'm trying to make a Groovy script read standard input, so I can call it from a Bash script with a heredoc, but I get a java.lang.NullPointerException: Cannot invoke method readLine() on null object exception.
Here's a cut-down Groovy script echo.groovy:
#!/usr/bin/env groovy
for (;;)
{
String line = System.console().readLine()
if (line == null)
break
println(">>> $line")
}
Here's the equivalent Ruby script echo.rb:
#!/usr/bin/env ruby
ARGF.each do |line|
puts ">>> #{line}"
end
If I call these from a Bash shell, everything works as expected:
$ ./echo.rb
one
>>> one
two
>>> two
three
>>> three
^C
$ ./echo.groovy
one
>>> one
two
>>> two
three
>>> three
^C
This is the Bash script heredoc.sh using heredocs:
echo 'Calling echo.rb'
./echo.rb <<EOF
one
two
three
EOF
echo 'Calling echo.groovy'
./echo.groovy <<EOF
one
two
three
EOF
This is what happens when I run it:
$ ./heredoc.sh
Calling echo.rb
>>> one
>>> two
>>> three
Calling echo.groovy
Caught: java.lang.NullPointerException: Cannot invoke method readLine() on null object
java.lang.NullPointerException: Cannot invoke method readLine() on null object
at echo.run(echo.groovy:4)
Any ideas?
UPDATE
On Etan's advice, I changed echo.groovy to the following:
#!/usr/bin/env groovy
Reader reader = new BufferedReader(new InputStreamReader(System.in))
for (;;)
{
String line = reader.readLine()
if (line == null)
break
println(">>> $line")
}
It now works with heredocs:
$ ./heredoc.sh
Calling echo.rb
>>> one
>>> two
>>> three
Calling echo.groovy
>>> one
>>> two
>>> three
Thanks Etan. If you'd like to post a formal answer, I'll upvote it.
As an alternative to Etan's answer, a Groovier approach is the withReader method, which handles the cleanup of the reader afterwards, and the BufferedReader's eachLine method, which handles the infinite looping.
#!/usr/bin/env groovy
System.in.withReader { console ->
console.eachLine { line ->
println ">>> $line"
}
}
As Etan says, you need to read from System.in I think this will get the response you are after
#!/usr/bin/env groovy
System.in.withReader { r ->
r.eachLine { line ->
println ">>> $line"
}
}
Thought it's not exactly the same as the Ruby version, as ARGF will return arguments if any were passed
Silly question, but I want to do some processing on a dataset and put them into different CSVs, like UDID1.csv, UDID2.csv, ..., UDID1000.csv. So this is my code:
for i in 1..1000
logfile = File.new('C:\Users\hp1\Desktop\Datasets\New File\UDID#{i}\.csv',"a")
#I'll do some processing here
end
But the program throws an error when running because of the UDID#{i} part. So, how to overcome this issue? Thanks.
Edit: This is the error:
in `initialize': No such file or directory # rb_sysopen - C:\Users\hp1\Desktop\Datasets\New File\udid#{1}\.csv (Errno::ENOENT)from C:/Ruby21/bin/hashedUDID.rb:38:in `new' from C:/Ruby21/bin/hashedUDID.rb:38:in '<main>'
The ' is one problem, another problem is the path.
In your posting the New File must exist as a directory. Inside this directory must exist another directories like UDID0001. This gets a .csv file.
Correct is (I don't use the non-rubyesk for-loop):
1.upto(1000) do |i|
logfile = File.new("C:\\Users\\hp1\\Desktop\\Datasets\\UDID#{i}.csv", "a")
#I'll do some processing here
logfile.close #Don't forget to close the file
end
Inside " the backslash must be masked (\\). Instead you may use /:
logfile = File.new("C:/Users/hp1/Desktop/Datasets/New File/UDID#{i}/.csv", "a")
Another possibility is the usage of %i to insert the number:
logfile = File.new("C:/Users/hp1/Desktop/Datasets/New File/UDID%02i/.csv" % i, "a")
I prefer to use open, then the file is closed with the end of the block:
File.open("C:/Users/hp1/Desktop/Datasets/New File/UDID%04i/.csv" % i, "a") do |logfile|
#I'll do some processing here
end #closes the file
Warning:
I'm not sure, if you really want to create 1000 log files (The File is opened inside the loop. so each step creates a file.).
If yes, then the %04i-version has the advantage, that the files get all the same number of digits (starting with 0001 and ending with 1000).
(1..10).each { |i| logfile = File.new("/base/path/UDID#{i}.csv") }
You must use double quote (") when you need string interpolation.
#{} can only be used in strings with double quotes ". So change your code to:
for i in 1..1000
logfile = File.new("C:\Users\hp1\Desktop\Datasets\New File\UDID#{i}\.csv","a")
# other stuff
end
I have a file that is listed line by line as such:
first.last#example.com
first.last#example.com
last#example.com...
Note that some of the addresses don't have a first name, in which case, it is just the last name.
How can I write a simple Ruby script to read in this file (call it email.txt)
and write it back to the file in sorted order by last name?
Put this in a file, e.g. sort_by_last.rb:
puts IO.readlines('email.txt').sort_by { |e| e.match(/[^\.]+(?=#)/)[0].downcase }
then run it:
ruby sort_by_last.rb > emails_sorted.txt
For variable filename
Set contents of sort_by_last.rb to
puts STDIN.readlines.sort_by { |e| e.match(/[^\.]+(?=#)/)[0].downcase }
then run:
ruby sort_by_last.rb < email.txt > emails_sorted.txt
I'm trying to create a minitest for chef (minitest::spec) and I'm a little lost at how to accomplish what I want in ruby.
What I want to do is have the code run the 'date' command and then check if the output contains 'UTC'.
I have this so far, but I don't know how to check the output for 'true':
it "uses the correct timezone" do
timezone_check = shell_out("date")
timezone_check.to_s.include?('UTC')
end
I tried to use .must_output, but I don't know how to incorporate it. Is this even the best way to accomplish what I want?
Any input is appreciated!
Thanks.
EDIT: I have now tried this:
it "uses the correct timezone" do
date_input = `date`
proc { puts date_input.to_s }.must_output /UTC/
end
but it results in this:
Failure:
test_0002_uses_the_correct_timezone(recipe::base::default) [/var/chef/minitest/base/default_test.rb:18]:
In stdout.
--- expected
+++ actual
## -1 +1,2 ##
-/UTC/
+"Fri Apr 19 17:50:27 UTC 2013
+"
Testing shell_out requires you to test against stdout
it "uses the correct timezone" do
timezone_check = shell_out("date")
timezone_check.stdout.must_match /UTC/
end
For more examples check out Cookbook Integration Testing
Wrap it in a proc and try using must_output. The test would probably look like:
it "uses the correct timezone" do
proc { timezone_check = shell_out("date") }.should_output /UTC/
end
Not entirely sure from the documentation that the should_output method will accept a pattern, but if you can write the test such that you know precisely the entire output expected, then you can simply test against the full expected string. E.g.
it "uses the correct timezone" do
proc { timezone_check = shell_out("date") }.should_output("Fri Apr 19 12:33:13 CDT 2013")
end
I have a bash script that creates a csv file and an R file that creates graphs from that.
At the end of the bash script I call Rscript Graphs.R 10
The response I get is as follows:
Error in is.vector(X) : subscript out of bounds
Calls: print ... <Anonymous> -> lapply -> FUN -> lapply -> is.vector
Execution halted
The first few lines of my Graphs.R are:
#!/bin/Rscript
args <- commandArgs(TRUE)
CorrAns = args[1]
No idea what I am doing wrong? The advice on the net appears to me to say that this should work. Its very hard to make sense of commandArgs
With the following in args.R
print(commandArgs(TRUE)[1])
and the following in args.sh
Rscript args.R 10
I get the following output from bash args.sh
[1] "10"
and no error. If necessary, convert to a numberic type using as.numeric(commandArgs(TRUE)[1]).
Just a guess, perhaps you need to convert CorrAns from character to numeric, since Value section of ?CommandArgs says:
A character vector containing the name
of the executable and the
user-supplied command line arguments.
UPDATE: It could be as easy as:
#!/bin/Rscript
args <- commandArgs(TRUE)
(CorrAns = args[1])
(CorrAns = as.numeric(args[1]))
Reading the docs, it seems you might need to remove the TRUE from the call to commandArgs() as you don't call the script with --args. Either that, or you need to call Rscript Graphs.R --args 10.
Usage
commandArgs(trailingOnly = FALSE)
Arguments
trailingOnly logical. Should only
arguments after --args be returned?
Rscript args.R 10 where 10 is the numeric value we want to pass to the R script.
print(as.numeric(commandArgs(TRUE)[1]) prints out the value which can then be assigned to a variable.