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xkeyval — read keys from file



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)Strip one level of braces for using keyval-value within nested keyvalExpand command read from fileGenerate xkeyval boolean keys 'on the fly'Command with xkeyval keys from different familiesDefining xkeyval keys within a loopHow to compare and see if an expanded command is equal to anotherHow to create and manage hierarchically dependent PGF keys?Confusion with “xkeyval” and “newcommand”: Better Way to Use with “lstinputlisting”Loading pgfkeys key values from an external file without Expl3?How to integrate xkeyval keys with Lua code










5















I want to read xkeyval options from an external file, like:



setkeysmy@keysinputconf


I tried several combinations of edef and expandafter, but to no avail. Any ideas?



Best regards,



Nicolas










share|improve this question




























    5















    I want to read xkeyval options from an external file, like:



    setkeysmy@keysinputconf


    I tried several combinations of edef and expandafter, but to no avail. Any ideas?



    Best regards,



    Nicolas










    share|improve this question


























      5












      5








      5








      I want to read xkeyval options from an external file, like:



      setkeysmy@keysinputconf


      I tried several combinations of edef and expandafter, but to no avail. Any ideas?



      Best regards,



      Nicolas










      share|improve this question
















      I want to read xkeyval options from an external file, like:



      setkeysmy@keysinputconf


      I tried several combinations of edef and expandafter, but to no avail. Any ideas?



      Best regards,



      Nicolas







      expansion key-value xkeyval






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 3 hours ago









      Phelype Oleinik

      25.9k54691




      25.9k54691










      asked 8 hours ago









      NicolaF_NicolaF_

      563




      563




















          1 Answer
          1






          active

          oldest

          votes


















          5














          You can't edef an input because it isn't expandable. You have to first read the contents of the file to a temporary variable and then pass that to setkeys.



          Here's an expl3 implementation of setkeysFile. It's the same as the standard setkeys except that the second argument is a file that (should) contain a comma separated list of key-value pairs.



          RequirePackagefilecontents
          beginfilecontents*conf.tex
          hello = world :D,
          goodnews = everyone!,
          endfilecontents*
          documentclassarticle
          usepackagexkeyval
          makeatletter
          define@keymy@keyshellodeftowhom#1
          define@keymy@keysgoodnewsdefwho#1
          makeatother

          usepackagexparse
          ExplSyntaxOn
          tl_new:N l__nicolas_setkeys_tl
          NewDocumentCommand setkeysFile m m

          file_get:nnNTF #2 l__nicolas_setkeys_tl
          exp_args:NnV setkeys #1 l__nicolas_setkeys_tl
          __kernel_msg_error:nnn kernel file-not-found #2

          ExplSyntaxOff

          begindocument

          setkeysFilemy@keysconf

          Hello towhom

          Good news who

          enddocument


          this prints:




          enter image description here







          share|improve this answer




















          • 1





            exp_args:NnV setkeys#1 l__nicolas_setkeys_tl already supplies the braces and is more correct code anyhow. The ior_open:Nn business is useless.

            – egreg
            7 hours ago












          • Thanks :-) But why more correct? Oh, nevermind, it's because V gets the value of a register, and a register is an N type. Am I correct?

            – Phelype Oleinik
            7 hours ago







          • 1





            @PhelypeOleinik Because a V-type argument must be a single token

            – Joseph Wright
            7 hours ago











          • @JosephWright Thanks! Some day I'll learn how to use expl3 properly :)

            – Phelype Oleinik
            7 hours ago











          • @PhelypeOleinik I took the liberty of streamlining your code.

            – egreg
            3 hours ago











          Your Answer








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          1 Answer
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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          5














          You can't edef an input because it isn't expandable. You have to first read the contents of the file to a temporary variable and then pass that to setkeys.



          Here's an expl3 implementation of setkeysFile. It's the same as the standard setkeys except that the second argument is a file that (should) contain a comma separated list of key-value pairs.



          RequirePackagefilecontents
          beginfilecontents*conf.tex
          hello = world :D,
          goodnews = everyone!,
          endfilecontents*
          documentclassarticle
          usepackagexkeyval
          makeatletter
          define@keymy@keyshellodeftowhom#1
          define@keymy@keysgoodnewsdefwho#1
          makeatother

          usepackagexparse
          ExplSyntaxOn
          tl_new:N l__nicolas_setkeys_tl
          NewDocumentCommand setkeysFile m m

          file_get:nnNTF #2 l__nicolas_setkeys_tl
          exp_args:NnV setkeys #1 l__nicolas_setkeys_tl
          __kernel_msg_error:nnn kernel file-not-found #2

          ExplSyntaxOff

          begindocument

          setkeysFilemy@keysconf

          Hello towhom

          Good news who

          enddocument


          this prints:




          enter image description here







          share|improve this answer




















          • 1





            exp_args:NnV setkeys#1 l__nicolas_setkeys_tl already supplies the braces and is more correct code anyhow. The ior_open:Nn business is useless.

            – egreg
            7 hours ago












          • Thanks :-) But why more correct? Oh, nevermind, it's because V gets the value of a register, and a register is an N type. Am I correct?

            – Phelype Oleinik
            7 hours ago







          • 1





            @PhelypeOleinik Because a V-type argument must be a single token

            – Joseph Wright
            7 hours ago











          • @JosephWright Thanks! Some day I'll learn how to use expl3 properly :)

            – Phelype Oleinik
            7 hours ago











          • @PhelypeOleinik I took the liberty of streamlining your code.

            – egreg
            3 hours ago















          5














          You can't edef an input because it isn't expandable. You have to first read the contents of the file to a temporary variable and then pass that to setkeys.



          Here's an expl3 implementation of setkeysFile. It's the same as the standard setkeys except that the second argument is a file that (should) contain a comma separated list of key-value pairs.



          RequirePackagefilecontents
          beginfilecontents*conf.tex
          hello = world :D,
          goodnews = everyone!,
          endfilecontents*
          documentclassarticle
          usepackagexkeyval
          makeatletter
          define@keymy@keyshellodeftowhom#1
          define@keymy@keysgoodnewsdefwho#1
          makeatother

          usepackagexparse
          ExplSyntaxOn
          tl_new:N l__nicolas_setkeys_tl
          NewDocumentCommand setkeysFile m m

          file_get:nnNTF #2 l__nicolas_setkeys_tl
          exp_args:NnV setkeys #1 l__nicolas_setkeys_tl
          __kernel_msg_error:nnn kernel file-not-found #2

          ExplSyntaxOff

          begindocument

          setkeysFilemy@keysconf

          Hello towhom

          Good news who

          enddocument


          this prints:




          enter image description here







          share|improve this answer




















          • 1





            exp_args:NnV setkeys#1 l__nicolas_setkeys_tl already supplies the braces and is more correct code anyhow. The ior_open:Nn business is useless.

            – egreg
            7 hours ago












          • Thanks :-) But why more correct? Oh, nevermind, it's because V gets the value of a register, and a register is an N type. Am I correct?

            – Phelype Oleinik
            7 hours ago







          • 1





            @PhelypeOleinik Because a V-type argument must be a single token

            – Joseph Wright
            7 hours ago











          • @JosephWright Thanks! Some day I'll learn how to use expl3 properly :)

            – Phelype Oleinik
            7 hours ago











          • @PhelypeOleinik I took the liberty of streamlining your code.

            – egreg
            3 hours ago













          5












          5








          5







          You can't edef an input because it isn't expandable. You have to first read the contents of the file to a temporary variable and then pass that to setkeys.



          Here's an expl3 implementation of setkeysFile. It's the same as the standard setkeys except that the second argument is a file that (should) contain a comma separated list of key-value pairs.



          RequirePackagefilecontents
          beginfilecontents*conf.tex
          hello = world :D,
          goodnews = everyone!,
          endfilecontents*
          documentclassarticle
          usepackagexkeyval
          makeatletter
          define@keymy@keyshellodeftowhom#1
          define@keymy@keysgoodnewsdefwho#1
          makeatother

          usepackagexparse
          ExplSyntaxOn
          tl_new:N l__nicolas_setkeys_tl
          NewDocumentCommand setkeysFile m m

          file_get:nnNTF #2 l__nicolas_setkeys_tl
          exp_args:NnV setkeys #1 l__nicolas_setkeys_tl
          __kernel_msg_error:nnn kernel file-not-found #2

          ExplSyntaxOff

          begindocument

          setkeysFilemy@keysconf

          Hello towhom

          Good news who

          enddocument


          this prints:




          enter image description here







          share|improve this answer















          You can't edef an input because it isn't expandable. You have to first read the contents of the file to a temporary variable and then pass that to setkeys.



          Here's an expl3 implementation of setkeysFile. It's the same as the standard setkeys except that the second argument is a file that (should) contain a comma separated list of key-value pairs.



          RequirePackagefilecontents
          beginfilecontents*conf.tex
          hello = world :D,
          goodnews = everyone!,
          endfilecontents*
          documentclassarticle
          usepackagexkeyval
          makeatletter
          define@keymy@keyshellodeftowhom#1
          define@keymy@keysgoodnewsdefwho#1
          makeatother

          usepackagexparse
          ExplSyntaxOn
          tl_new:N l__nicolas_setkeys_tl
          NewDocumentCommand setkeysFile m m

          file_get:nnNTF #2 l__nicolas_setkeys_tl
          exp_args:NnV setkeys #1 l__nicolas_setkeys_tl
          __kernel_msg_error:nnn kernel file-not-found #2

          ExplSyntaxOff

          begindocument

          setkeysFilemy@keysconf

          Hello towhom

          Good news who

          enddocument


          this prints:




          enter image description here








          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 7 hours ago









          egreg

          736k8919353261




          736k8919353261










          answered 7 hours ago









          Phelype OleinikPhelype Oleinik

          25.9k54691




          25.9k54691







          • 1





            exp_args:NnV setkeys#1 l__nicolas_setkeys_tl already supplies the braces and is more correct code anyhow. The ior_open:Nn business is useless.

            – egreg
            7 hours ago












          • Thanks :-) But why more correct? Oh, nevermind, it's because V gets the value of a register, and a register is an N type. Am I correct?

            – Phelype Oleinik
            7 hours ago







          • 1





            @PhelypeOleinik Because a V-type argument must be a single token

            – Joseph Wright
            7 hours ago











          • @JosephWright Thanks! Some day I'll learn how to use expl3 properly :)

            – Phelype Oleinik
            7 hours ago











          • @PhelypeOleinik I took the liberty of streamlining your code.

            – egreg
            3 hours ago












          • 1





            exp_args:NnV setkeys#1 l__nicolas_setkeys_tl already supplies the braces and is more correct code anyhow. The ior_open:Nn business is useless.

            – egreg
            7 hours ago












          • Thanks :-) But why more correct? Oh, nevermind, it's because V gets the value of a register, and a register is an N type. Am I correct?

            – Phelype Oleinik
            7 hours ago







          • 1





            @PhelypeOleinik Because a V-type argument must be a single token

            – Joseph Wright
            7 hours ago











          • @JosephWright Thanks! Some day I'll learn how to use expl3 properly :)

            – Phelype Oleinik
            7 hours ago











          • @PhelypeOleinik I took the liberty of streamlining your code.

            – egreg
            3 hours ago







          1




          1





          exp_args:NnV setkeys#1 l__nicolas_setkeys_tl already supplies the braces and is more correct code anyhow. The ior_open:Nn business is useless.

          – egreg
          7 hours ago






          exp_args:NnV setkeys#1 l__nicolas_setkeys_tl already supplies the braces and is more correct code anyhow. The ior_open:Nn business is useless.

          – egreg
          7 hours ago














          Thanks :-) But why more correct? Oh, nevermind, it's because V gets the value of a register, and a register is an N type. Am I correct?

          – Phelype Oleinik
          7 hours ago






          Thanks :-) But why more correct? Oh, nevermind, it's because V gets the value of a register, and a register is an N type. Am I correct?

          – Phelype Oleinik
          7 hours ago





          1




          1





          @PhelypeOleinik Because a V-type argument must be a single token

          – Joseph Wright
          7 hours ago





          @PhelypeOleinik Because a V-type argument must be a single token

          – Joseph Wright
          7 hours ago













          @JosephWright Thanks! Some day I'll learn how to use expl3 properly :)

          – Phelype Oleinik
          7 hours ago





          @JosephWright Thanks! Some day I'll learn how to use expl3 properly :)

          – Phelype Oleinik
          7 hours ago













          @PhelypeOleinik I took the liberty of streamlining your code.

          – egreg
          3 hours ago





          @PhelypeOleinik I took the liberty of streamlining your code.

          – egreg
          3 hours ago

















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