mf_mkdir.sas

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/**
  @file
  @brief Creates a directory, including any intermediate directories
  @details Works on windows and unix environments via dcreate function.
Usage:
 
    %mf_mkdir(/some/path/name)
 
 
  @param [in] dir Relative or absolute pathname.  Unquoted.
  @version 9.2
 
**/
 
%macro mf_mkdir(dir
)/*/STORE SOURCE*/;
 
  %local lastchar child parent;
 
  %let lastchar = %substr(&dir, %length(&dir));
  %if (%bquote(&lastchar) eq %str(:)) %then %do;
    /* Cannot create drive mappings */
    %return;
  %end;
 
  %if (%bquote(&lastchar)=%str(/)) or (%bquote(&lastchar)=%str(\)) %then %do;
    /* last char is a slash */
    %if (%length(&dir) eq 1) %then %do;
      /* one single slash - root location is assumed to exist */
      %return;
    %end;
    %else %do;
      /* strip last slash */
      %let dir = %substr(&dir, 1, %length(&dir)-1);
    %end;
  %end;
 
  %if (%sysfunc(fileexist(%bquote(&dir))) = 0) %then %do;
    /* directory does not exist so prepare to create */
    /* first get the childmost directory */
    %let child = %scan(&dir, -1, %str(/\:));
 
    /*
      If child name = path name then there are no parents to create. Else
      they must be recursively scanned.
    */
 
    %if (%length(&dir) gt %length(&child)) %then %do;
      %let parent = %substr(&dir, 1, %length(&dir)-%length(&child));
      %mf_mkdir(&parent)
    %end;
 
    /*
      Now create the directory.  Complain loudly of any errs.
    */
 
    %let dname = %sysfunc(dcreate(&child, &parent));
    %if (%bquote(&dname) eq ) %then %do;
      %put %str(ERR)OR: could not create &parent + &child;
      %abort cancel;
    %end;
    %else %do;
      %put Directory created:  &dir;
    %end;
  %end;
  /* exit quietly if directory did exist.*/
%mend mf_mkdir;