Is there an easier way to parse into tokens a string?

ruby-talk
1

Hello Team,

When running the piece of code below, I expect and get the following line
of text, which comes as a one element array.
["AMQ8409: Display Queue details.\n QUEUE(TEMP) TYPE(QLOCAL)\n
CURDEPTH(*6*)"]

I am only interested in the queue depth, which is pointed to by CURDEPTH.
That number, which is *6* for case, is the only thing I want.
I convert that one element into a string and then parse (tokenize) it using
the *split* method. As you can see it takes me 3 operations to get that
number.
Using my method below on a very long string will make it unmanageable.
Think of a string with few dozen words!
Is there a more simple Ruby way to parse the string and get what I want?

Bellow is the actual code.

Thank you

require 'rubygems'
require 'wmq'

WMQ::QueueManager.connect(:q_mgr_name=>'WMQDEVA1',
                          :connection_name => 'test.host(1414)',
                          :channel_name => 'WMQDEVA1.ADM.SVRCONN') do |qmgr|

# The next stmt returns an array of 1 element, which I convert to a string
# I am ONLY interested in the content of CURDEPTH, the number between
parenthesis
# Actual output:
# *["AMQ8409: Display Queue details.\n QUEUE(TEMP) TYPE(QLOCAL)\n
  CURDEPTH(6)"]*
    cdepth = qmgr.mqsc('dis ql(TEMP) CURDEPTH').to_s
    v1,v2,v3,v4,v5,v6,v7 = cdepth.split(" ") # tokenize string to isolate
CURDEPTH(6)
    v1,v2 = v7.split("(") # Remove left parenthesis
    qdepth, gb = v2.split(")") # Remove right parenthesis
    puts "CURDEPTH = #{qdepth}" # 6
end

Thank you

···

--
Ruby Student

2

You could do it with a regular expression and a capturing group:

2.0.0-p195 :003 > s = "AMQ8409: Display Queue details.\n QUEUE(TEMP)
        TYPE(QLOCAL)\n CURDEPTH(6)"
=> "AMQ8409: Display Queue details.\n QUEUE(TEMP)
TYPE(QLOCAL)\n CURDEPTH(6)"
2.0.0-p195 :005 > s[/CURDEPTH\(([^)]*)\)/,1]
=> "6"

Jesus.

···

On Mon, Nov 11, 2013 at 4:58 PM, Ruby Student <ruby.student@gmail.com> wrote:

Hello Team,

When running the piece of code below, I expect and get the following line of
text, which comes as a one element array.
["AMQ8409: Display Queue details.\n QUEUE(TEMP) TYPE(QLOCAL)\n
CURDEPTH(6)"]

I am only interested in the queue depth, which is pointed to by CURDEPTH.
That number, which is 6 for case, is the only thing I want.
I convert that one element into a string and then parse (tokenize) it using
the split method. As you can see it takes me 3 operations to get that
number.
Using my method below on a very long string will make it unmanageable.
Think of a string with few dozen words!
Is there a more simple Ruby way to parse the string and get what I want?

Bellow is the actual code.

Thank you

require 'rubygems'
require 'wmq'

WMQ::QueueManager.connect(:q_mgr_name=>'WMQDEVA1',
                          :connection_name => 'test.host(1414)',
                          :channel_name => 'WMQDEVA1.ADM.SVRCONN') do |qmgr|

# The next stmt returns an array of 1 element, which I convert to a string
# I am ONLY interested in the content of CURDEPTH, the number between
parenthesis
# Actual output:
# ["AMQ8409: Display Queue details.\n QUEUE(TEMP) TYPE(QLOCAL)\n
CURDEPTH(6)"]
    cdepth = qmgr.mqsc('dis ql(TEMP) CURDEPTH').to_s
    v1,v2,v3,v4,v5,v6,v7 = cdepth.split(" ") # tokenize string to isolate
CURDEPTH(6)
    v1,v2 = v7.split("(") # Remove left parenthesis
    qdepth, gb = v2.split(")") # Remove right parenthesis
    puts "CURDEPTH = #{qdepth}" # 6
end

3

irb(main):015:0> s = "AMQ8409: Display Queue details.\n QUEUE(TEMP) TYPE(QLOCAL)\n CURDEPTH(6)"
=> "AMQ8409: Display Queue details.\n QUEUE(TEMP) TYPE(QLOCAL)\n CURDEPTH(6)"

irb(main):016:0> s.slice(s.rindex(/\(/)+1..s.rindex(/\)/)-1)
=> "6"
irb(main):017:0>

···

On Mon, 2013-11-11 at 17:20 +0100, Jesús Gabriel y Galán wrote:

On Mon, Nov 11, 2013 at 4:58 PM, Ruby Student <ruby.student@gmail.com> wrote:
> Hello Team,
>
> When running the piece of code below, I expect and get the following line of
> text, which comes as a one element array.
> ["AMQ8409: Display Queue details.\n QUEUE(TEMP) TYPE(QLOCAL)\n
> CURDEPTH(6)"]
>
> I am only interested in the queue depth, which is pointed to by CURDEPTH.
> That number, which is 6 for case, is the only thing I want.
> I convert that one element into a string and then parse (tokenize) it using
> the split method. As you can see it takes me 3 operations to get that
> number.
> Using my method below on a very long string will make it unmanageable.
> Think of a string with few dozen words!
> Is there a more simple Ruby way to parse the string and get what I want?
>
> Bellow is the actual code.
>
> Thank you
>
> require 'rubygems'
> require 'wmq'
>
> WMQ::QueueManager.connect(:q_mgr_name=>'WMQDEVA1',
> :connection_name => 'test.host(1414)',
> :channel_name => 'WMQDEVA1.ADM.SVRCONN') do |qmgr|
>
> # The next stmt returns an array of 1 element, which I convert to a string
> # I am ONLY interested in the content of CURDEPTH, the number between
> parenthesis
> # Actual output:
> # ["AMQ8409: Display Queue details.\n QUEUE(TEMP) TYPE(QLOCAL)\n
> CURDEPTH(6)"]
> cdepth = qmgr.mqsc('dis ql(TEMP) CURDEPTH').to_s
> v1,v2,v3,v4,v5,v6,v7 = cdepth.split(" ") # tokenize string to isolate
> CURDEPTH(6)
> v1,v2 = v7.split("(") # Remove left parenthesis
> qdepth, gb = v2.split(")") # Remove right parenthesis
> puts "CURDEPTH = #{qdepth}" # 6
> end

You could do it with a regular expression and a capturing group:

2.0.0-p195 :003 > s = "AMQ8409: Display Queue details.\n QUEUE(TEMP)
        TYPE(QLOCAL)\n CURDEPTH(6)"
=> "AMQ8409: Display Queue details.\n QUEUE(TEMP)
TYPE(QLOCAL)\n CURDEPTH(6)"
2.0.0-p195 :005 > s[/CURDEPTH\(([^)]*)\)/,1]
=> "6"

Jesus.

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