Regexp Question / gsub Question

Perhaps someone could help with this example? I need to iterate
through each of the items in strings and wrap any case insensitive
occurrence of "key" with <b> </b>. If each string was always just the
word "key" I would use something like wrapper.join("key") but.. I have
other text surrounding the "key", various cases and potentially
multiple occurrences. Thank you in advance.

wrapper = ["<b>", "</b>"]
strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx", "xxKeyxxKEY"]

strings.each do |string|
       # would like to print the string replacing "key" (case
insensitive) with <b>"key"(in its original case)</b>
end

# Ideally, would output:
   # "blahblah<b>KEY</b>"
   # "asdfasdf<b>key</b>"
   # "<b>Key</b>asdf"
   # "xx<b>kEY</b>xx"
   # "xx<b>Key</b>xx<b>KEY</b>"

#!/usr/bin/env ruby

wrapper = ["<b>", "</b>"]
strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx", "xxKeyxxKEY"]

strings.each do |string|
   puts string.gsub(/key/i) {|match| "<b>#{match}</b>"}
end

Maybe?

Hope this helps,

Mike

···

On 25-Sep-06, at 9:27 PM, x1 wrote:

Perhaps someone could help with this example? I need to iterate
through each of the items in strings and wrap any case insensitive
occurrence of "key" with <b> </b>. If each string was always just the
word "key" I would use something like wrapper.join("key") but.. I have
other text surrounding the "key", various cases and potentially
multiple occurrences. Thank you in advance.

wrapper = ["<b>", "</b>"]
strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx", "xxKeyxxKEY"]

strings.each do |string|
      # would like to print the string replacing "key" (case
insensitive) with <b>"key"(in its original case)</b>
end

# Ideally, would output:
  # "blahblah<b>KEY</b>"
  # "asdfasdf<b>key</b>"
  # "<b>Key</b>asdf"
  # "xx<b>kEY</b>xx"
  # "xx<b>Key</b>xx<b>KEY</b>"

--

Mike Stok <mike@stok.ca>
http://www.stok.ca/~mike/

The "`Stok' disclaimers" apply.

Hehe.. Awesome!!!!!!!

Ok.. one last thing.. : key being a variable.

How would you knock this one out? Instead of the string "key", lets
repace the occurance of the key variable, which in this case is "key"
but could be another string..

key = "key"
wrapper = ["<b>", "</b>"]
strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx",
"xxKeyxxKEY"]

strings.each do |string|
  puts string.gsub(/key/i) {|match| "<b>#{match}</b>"}
end

···

On 9/25/06, Mike Stok <mike@stok.ca> wrote:

On 25-Sep-06, at 9:27 PM, x1 wrote:

> Perhaps someone could help with this example? I need to iterate
> through each of the items in strings and wrap any case insensitive
> occurrence of "key" with <b> </b>. If each string was always just the
> word "key" I would use something like wrapper.join("key") but.. I have
> other text surrounding the "key", various cases and potentially
> multiple occurrences. Thank you in advance.
>
> wrapper = ["<b>", "</b>"]
> strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx",
> "xxKeyxxKEY"]
>
> strings.each do |string|
> # would like to print the string replacing "key" (case
> insensitive) with <b>"key"(in its original case)</b>
> end
>
> # Ideally, would output:
> # "blahblah<b>KEY</b>"
> # "asdfasdf<b>key</b>"
> # "<b>Key</b>asdf"
> # "xx<b>kEY</b>xx"
> # "xx<b>Key</b>xx<b>KEY</b>"
>

#!/usr/bin/env ruby

wrapper = ["<b>", "</b>"]
strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx",
"xxKeyxxKEY"]

strings.each do |string|
   puts string.gsub(/key/i) {|match| "<b>#{match}</b>"}
end

Maybe?

Hope this helps,

Mike

--

Mike Stok <mike@stok.ca>
Mike Stok

The "`Stok' disclaimers" apply.

Hehe.. Awesome!!!!!!!

Ok.. one last thing.. : key being a variable.

How would you knock this one out? Instead of the string "key", lets
repace the occurance of the key variable, which in this case is "key"
but could be another string..

key = "key"
wrapper = ["<b>", "</b>"]
strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx",
"xxKeyxxKEY"]

strings.each do |string|
puts string.gsub(/key/i) {|match| "<b>#{match}</b>"}
end

The simple, but incomplete/unsafe, approach might be:

thing = 'key'
strings.each do |string|
   puts string.gsub(/#{thing}/i) {|match| "<b>#{match}</b>"}
end

If "thing" includes regex metacharacters then you might want to consider looking at Regexp::escape and figuring out how it could help those cases.

Hope this helps,

Mike

···

On 25-Sep-06, at 9:35 PM, x1 wrote:

On 9/25/06, Mike Stok <mike@stok.ca> wrote:

On 25-Sep-06, at 9:27 PM, x1 wrote:

> Perhaps someone could help with this example? I need to iterate
> through each of the items in strings and wrap any case insensitive
> occurrence of "key" with <b> </b>. If each string was always just the
> word "key" I would use something like wrapper.join("key") but.. I have
> other text surrounding the "key", various cases and potentially
> multiple occurrences. Thank you in advance.
>
> wrapper = ["<b>", "</b>"]
> strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx",
> "xxKeyxxKEY"]
>
> strings.each do |string|
> # would like to print the string replacing "key" (case
> insensitive) with <b>"key"(in its original case)</b>
> end
>
> # Ideally, would output:
> # "blahblah<b>KEY</b>"
> # "asdfasdf<b>key</b>"
> # "<b>Key</b>asdf"
> # "xx<b>kEY</b>xx"
> # "xx<b>Key</b>xx<b>KEY</b>"
>

#!/usr/bin/env ruby

wrapper = ["<b>", "</b>"]
strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx",
"xxKeyxxKEY"]

strings.each do |string|
   puts string.gsub(/key/i) {|match| "<b>#{match}</b>"}
end

Maybe?

Hope this helps,

Mike

--

Mike Stok <mike@stok.ca>
Mike Stok

The "`Stok' disclaimers" apply.

--

Mike Stok <mike@stok.ca>
http://www.stok.ca/~mike/

The "`Stok' disclaimers" apply.

Thanks so much Mike.

···

On 9/25/06, Mike Stok <mike@stok.ca> wrote:

On 25-Sep-06, at 9:35 PM, x1 wrote:

> Hehe.. Awesome!!!!!!!
>
> Ok.. one last thing.. : key being a variable.
>
> How would you knock this one out? Instead of the string "key", lets
> repace the occurance of the key variable, which in this case is "key"
> but could be another string..
>
> key = "key"
> wrapper = ["<b>", "</b>"]
> strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx",
> "xxKeyxxKEY"]
>
> strings.each do |string|
> puts string.gsub(/key/i) {|match| "<b>#{match}</b>"}
> end
>

The simple, but incomplete/unsafe, approach might be:

thing = 'key'
strings.each do |string|
   puts string.gsub(/#{thing}/i) {|match| "<b>#{match}</b>"}
end

If "thing" includes regex metacharacters then you might want to
consider looking at Regexp::escape and figuring out how it could help
those cases.

Hope this helps,

Mike

>
> On 9/25/06, Mike Stok <mike@stok.ca> wrote:
>>
>> On 25-Sep-06, at 9:27 PM, x1 wrote:
>>
>> > Perhaps someone could help with this example? I need to iterate
>> > through each of the items in strings and wrap any case insensitive
>> > occurrence of "key" with <b> </b>. If each string was always
>> just the
>> > word "key" I would use something like wrapper.join("key") but..
>> I have
>> > other text surrounding the "key", various cases and potentially
>> > multiple occurrences. Thank you in advance.
>> >
>> > wrapper = ["<b>", "</b>"]
>> > strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx",
>> > "xxKeyxxKEY"]
>> >
>> > strings.each do |string|
>> > # would like to print the string replacing "key" (case
>> > insensitive) with <b>"key"(in its original case)</b>
>> > end
>> >
>> > # Ideally, would output:
>> > # "blahblah<b>KEY</b>"
>> > # "asdfasdf<b>key</b>"
>> > # "<b>Key</b>asdf"
>> > # "xx<b>kEY</b>xx"
>> > # "xx<b>Key</b>xx<b>KEY</b>"
>> >
>>
>> #!/usr/bin/env ruby
>>
>> wrapper = ["<b>", "</b>"]
>> strings = ["blahblahKEY", "asdfasdfkey", "Keyasdf", "xxkEYxx",
>> "xxKeyxxKEY"]
>>
>> strings.each do |string|
>> puts string.gsub(/key/i) {|match| "<b>#{match}</b>"}
>> end
>>
>> Maybe?
>>
>> Hope this helps,
>>
>> Mike
>>
>> --
>>
>> Mike Stok <mike@stok.ca>
>> Mike Stok
>>
>> The "`Stok' disclaimers" apply.
>>
>

--

Mike Stok <mike@stok.ca>
Mike Stok

The "`Stok' disclaimers" apply.