getting path and filename from url

getting path and filename from url

[Pablo Rodriguez via ntg-context]

Dear list,

I have the following sample:

  \starttext
  \startluacode
  url = "../a/b/cb/ce.b/ca.b/c/dabc.pdf"

  context(url)

  context("\\\\0 ok. " .. url:match "^(.*).pdf$") -- name and path

  context("\\\\1. " .. url:match "^(.*).+$") -- path

  context("\\\\2. " .. url:match"[^/]+[.$]") -- name

  context("\\\\3 ok. " .. url:match "[^.]+$") -- extension
  \stopluacode
  \stoptext

How can I get that match for #1 ends in the last slash (including it
"../a/b/cb/ce.b/ca.b/c/") and match for #2 ends in the last period
(excluding it, "dabc")?

Many thanks for your help,

Pablo
--
http://www.ousia.tk
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: getting path and filename from url

[Tomas Hala via ntg-context]

Hi Pablo,

is the following what you need?

context("\\\\1. " .. url:match ".+/")
context("\\\\2a. " .. url:match "[^/]+/.+[.]") -- path and name with period
--context("\\\\2b. " .. url:match "[^/]+[^.]+$") -- name with period and extension
context("\\\\2c. " .. (url:match "[^/]+[^.]+$") :match ".+[.]")  -- name with period

Best wishes,

Tomáš

Fri, Aug 27, 2021 ve 08:53:52PM +0200 Pablo Rodriguez via ntg-context napsal(a):
# Dear list,
# 
# I have the following sample:
# 
#   \starttext
#   \startluacode
#   url = "../a/b/cb/ce.b/ca.b/c/dabc.pdf"
# 
#   context(url)
# 
#   context("\\\\0 ok. " .. url:match "^(.*).pdf$") -- name and path
# 
#   context("\\\\1. " .. url:match "^(.*).+$") -- path
# 
#   context("\\\\2. " .. url:match"[^/]+[.$]") -- name
# 
#   context("\\\\3 ok. " .. url:match "[^.]+$") -- extension
#   \stopluacode
#   \stoptext
# 
# How can I get that match for #1 ends in the last slash (including it
# "../a/b/cb/ce.b/ca.b/c/") and match for #2 ends in the last period
# (excluding it, "dabc")?
# 
# Many thanks for your help,
# 
# Pablo
# --
# http://www.ousia.tk
# ___________________________________________________________________________________
# If your question is of interest to others as well, please add an entry to the Wiki!
# 
# maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
# webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
# archive  : https://bitbucket.org/phg/context-mirror/commits/
# wiki     : http://contextgarden.net
# ___________________________________________________________________________________

                                         Tomáš Hála
--------------------------------------------------------------------
Mendelova univerzita, Provozně ekonomická fakulta, ústav informatiky
Zemědělská 1, CZ-613 00 Brno,  tel. +420 545 13 22 28
--------------------------------------------------------------------
http://akela.mendelu.cz/~thala
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: getting path and filename from url

[Hans Hagen via ntg-context]

On 8/27/2021 8:53 PM, Pablo Rodriguez via ntg-context wrote:
> Dear list,
> 
> I have the following sample:
> 
>    \starttext
>    \startluacode
>    url = "../a/b/cb/ce.b/ca.b/c/dabc.pdf"
> 
>    context(url)
> 
>    context("\\\\0 ok. " .. url:match "^(.*).pdf$") -- name and path
> 
>    context("\\\\1. " .. url:match "^(.*).+$") -- path
> 
>    context("\\\\2. " .. url:match"[^/]+[.$]") -- name
> 
>    context("\\\\3 ok. " .. url:match "[^.]+$") -- extension
>    \stopluacode
>    \stoptext
> 
> How can I get that match for #1 ends in the last slash (including it
> "../a/b/cb/ce.b/ca.b/c/") and match for #2 ends in the last period
> (excluding it, "dabc")?
it really helps to read the cld manual (or look into l-* files) as there 
are plenty of efficient helpers for these things

local s = "./a/b/cb/ce.b/ca.b/c/dabc.pdf"

print(file.pathpart(s))
print(file.nameonly(s))
print(file.basename(s))
print(file.suffix(s))
print(file.replacesuffix(s,"tmp"))


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: getting path and filename from url

[Pablo Rodriguez via ntg-context]

On 8/27/21 10:56 PM, Tomas Hala via ntg-context wrote:
> Hi Pablo,
>
> is the following what you need?
>
> context("\\\\2a. " .. url:match "[^/]+/.+[.]") -- path and name with period
> context("\\\\2c. " .. (url:match "[^/]+[^.]+$") :match ".+[.]")  -- name with period

Hi Tomáš,

well, I wnanted to remove the ending period in both cases (and to
understand how that patterns might work.

I got the first one with:

  context("\\\\2a ok. " .. url:match "[^/]+.+/") -- path and name

But I’m stuck at the second one (sorry, I don’t know how to remove the
final period):

  context("\\\\2c. " .. url:match "[^/]+.$":match("^.+%l+[.$]"))

https://pragma-ade.com/general/manuals/cld-mkiv.pdf#search=nameonly is
the way to go, but it won’t hurt me to understand how patterns might
work here.

Many thanks for your help,

Pablo
--
http://www.ousia.tk
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: getting path and filename from url

[Pablo Rodriguez via ntg-context]

On 8/28/21 1:17 AM, Hans Hagen via ntg-context wrote:
> On 8/27/2021 8:53 PM, Pablo Rodriguez via ntg-context wrote:
>> [...]
>> How can I get that match for #1 ends in the last slash (including it
>> "../a/b/cb/ce.b/ca.b/c/") and match for #2 ends in the last period
>> (excluding it, "dabc")?
> it really helps to read the cld manual (or look into l-* files) as there
> are plenty of efficient helpers for these things

Many thanks for your reply, Hans.

It really works like charm and reading cld-mkiv.pdf is one of the things
I want to do in the near future.

Many thanks for your help again,

Pablo
--
http://www.ousia.tk
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________