SAS Macro quoting issues -

-

i trying perform operations on binary data saved macro variable. datastep below saves data macro variable without issues:

data _null_;   infile datalines truncover ;   attrib x length=$300 informat=$300. format=$300.;   input x $300.;   put x=;   call symput ('str',cats(x));   datalines4; ‰png  >     ihdr   )   )   ëŠz   srgb ®Î=é   gama  ±^üa    phys  ;à  ;ÃÇo¨d   zidat8oåŒ[ À½ÿ¥Ó¼”Ö5dˆ_v@aw|+¸anŠ‡;6<ÞórÆÒÈefõu/'“#f™Ù÷&É|&t"<ß}4¯à6†Ë-Œ_È(%<É'™ènß%)˜Î{-    iend®b`‚ ;;;; run;

when try , use contents of macro variable in way, combinations of reserved characters making impossible work with. following reserved characters in value, , not matched:

&%'"()

i've tried every combination of macro quoting functions can think of , can't value print using %put():

%put %nrbquote(&str);

results in:

symbolgen:  macro variable str resolves ‰png  >     ihdr   )   )   ëŠz   srgb ®Î=é   gama             ±^üa    phys  ;à  ;ÃÇo¨d   zidat8oåŒ[             À½ÿ¥Ó¼”Ö5dˆ_v@aw|+¸anŠ‡;6<ÞórÆÒÈefõu/'“#f™Ù÷&É|&t"<ß}4¯à6†Ë-Œ_È(%<É'™ènß%)˜Î{-             iend®b`‚ error: value É not valid sas name. error: sas macro facility has encountered i/o error.  canceling submitted statements.  note: sas system stopped processing due receiving cancel request.

ultimately, i'd convert these values base64 encoding using following statement (i've pre-calculated length of base64 format ease-of-debugging):

%let base64_string = %sysfunc(putc(%nrbquote(&str),$base64x244.));

you can use %superq() quote macro variable without having first expand it. note takes name of macro variable , not value argument.

%let base64_string = %sysfunc(putc(%superq(str),$base64x244.));

but why not transformation in data step , avoid macro quoting issues?


Comments

Post a Comment

Popular posts from this blog

c++ - llvm function pass ReplaceInstWithInst malloc -

-
#include "llvm/pass.h" #include "llvm/ir/module.h" #include "llvm/ir/function.h" #include "llvm/support/raw_ostream.h" #include "llvm/ir/legacypassmanager.h" #include "llvm/ir/instrtypes.h" #include "llvm/transforms/ipo/passmanagerbuilder.h" #include "llvm/ir/irbuilder.h" #include "llvm/transforms/utils/basicblockutils.h" using namespace llvm; namespace { struct replacepass : public functionpass { static char id; replacepass() : functionpass(id) {} virtual bool runonfunction(function &f) { allocainst* insttoreplace = ??? basicblock::iterator ii(insttoreplace); replaceinstwithinst(insttoreplace->getparent()->getinstlist(), ii, new allocainst(type::int32ty, 0, insttoreplace)); return true; } }; } char replacepass::id = 0; static void registerreplacepass(const passmanagerbuilder &, legacy::passmanagerbase &pm) { pm.add(new re
Read more

java.lang.NoClassDefFoundError When Creating New Android Project -

-
i've tried installing (and re-installing) android studio several times now, , each time, studio isn't able create new android project. when attempt initial android studio window (ie. basic 'create', 'open', 'import' etc options), i'm asked of questions in wizard, brief progress dialog, followed nothing @ all. if open incomplete project process creates choosing 'open' list, can try choosing create new android project menu. this has same issue, error message in output console time... java.lang.noclassdeffounderror: com/sun/xml/internal/bind/v2/model/annotation/annotationreader (wrong name: com/sun/xml/internal/bind/v0/model/qnnotation/annotationreader) note: when installed android studio, installed incompatible jdk (1.8, not 1.7). have had go default project settings change jdk uses 1.8. does know how can avoid this? there place should downloading jxb classes? missing in java paths? this appears have been caused cor
Read more

Decoding a Python 2 `tempfile` with python-future -

-
i'm attempting write python 2/3 compatible routine fetch csv file, decode latin_1 unicode , feed csv.dictreader in robust, scalable manner. for python 2/3 support, i'm using python-future including imporing open builtins , , importing unicode_literals consistent behaviour i'm hoping handle exceptionally large files spilling disk, using tempfile.spooledtemporaryfile i'm using io.textiowrapper handle decoding latin_1 encoding before feeding dictreader this works fine under python 3. the problem textiowrapper expects wrap stream conforms bufferediobase . unfortunately under python 2, although have imported python 3-style open , vanilla python 2 tempfile.spooledtemporaryfile still of course returns python 2 cstringio.stringo , instead of python 3 io.bytesio required textiowrapper . i can think of these possible approaches: wrap python 2 cstringio.stringo python 3-style io.bytesio . i'm not sure how approach - need write such wrapper or 1 ex
Read more