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core/fcmp/mcf_string2file.sas

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SAS

/**
@file
@brief Adds a string to a file
@details Creates an fcmp function for appending a string to an external file.
If the file does not exist, it is created.
The function itself takes the following (positional) parameters:
| PARAMETER | DESCRIPTION |
|------------|-------------|
| filepath $ | full path to the file|
| string $ | string to add to the file |
| mode $ | mode of the output - either APPEND (default) or CREATE |
It returns 0 if successful, or -1 if an error occured.
Usage:
%mcf_string2file(wrap=YES, insert_cmplib=YES)
data _null_;
rc=mcf_string2file(
"%sysfunc(pathname(work))/newfile.txt"
, "This is a test"
, "CREATE");
run;
data _null_;
infile "%sysfunc(pathname(work))/newfile.txt";
input;
putlog _infile_;
run;
@param [out] wrap= (NO) Choose YES to add the proc fcmp wrapper.
@param [out] lib= (work) The output library in which to create the catalog.
@param [out] cat= (sasjs) The output catalog in which to create the package.
@param [out] pkg= (utils) The output package in which to create the function.
Uses a 3 part format: libref.catalog.package
@param [out] insert_cmplib= DEPRECATED - The CMPLIB option is checked and
values inserted only if needed.
<h4> SAS Macros </h4>
@li mcf_init.sas
<h4> Related Programs </h4>
@li mcf_stpsrv_header.test.sas
@li mp_init.sas
**/
%macro mcf_string2file(wrap=NO
,insert_cmplib=DEPRECATED
,lib=WORK
,cat=SASJS
,pkg=UTILS
)/*/STORE SOURCE*/;
%local i var cmpval found;
%if %mcf_init(mcf_string2file)=1 %then %return;
%if &wrap=YES %then %do;
proc fcmp outlib=&lib..&cat..&pkg;
%end;
function mcf_string2file(filepath $, string $, mode $);
if mode='APPEND' then fmode='a';
else fmode='o';
length fref $8;
rc=filename(fref,filepath);
if (rc ne 0) then return( -1 );
fid = fopen(fref,fmode);
if (fid = 0) then return( -1 );
rc=fput(fid, string);
rc=fwrite(fid);
rc=fclose(fid);
rc=filename(fref);
return(0);
endsub;
%if &wrap=YES %then %do;
quit;
%end;
/* insert the CMPLIB if not already there */
%let cmpval=%sysfunc(getoption(cmplib));
%let found=0;
%do i=1 %to %sysfunc(countw(&cmpval,%str( %(%))));
%let var=%scan(&cmpval,&i,%str( %(%)));
%if &var=&lib..&cat %then %let found=1;
%end;
%if &found=0 %then %do;
options insert=(CMPLIB=(&lib..&cat));
%end;
%mend mcf_string2file;