JavaScript-Minifier/JSMINIFY.SQLRPGLE at master · RainerRoss/JavaScript-Minifier · GitHub

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ctl-optmain(main) dftactgrp(*no) alloc(*teraspace);
//------------------------------------------------------------------//
// //
// JavaScript Minifier with Google Closure Compiler //
// //
//----------------- //
// R.Ross 01.2018 * //
//------------------------------------------------------------------//
// Array File-Data //
//------------------------------------------------------------------//

dcl-dsDsFilequalifiedinz;
SrcDatasqltype(CLOB:1000000) ccsid(*utf8);
EncDatasqltype(CLOB:1000000); // Encoded Data
MinDatasqltype(CLOB:1000000); // Minified Data
end-ds;

//------------------------------------------------------------------//
// Array Input-Data from Google //
//------------------------------------------------------------------//

dcl-dsDsDataqualifiedinz;
MinCodesqltype(CLOB:1000000) ccsid(*utf8);
SrcSizeint(10); // source-size
CmpSizeint(10); // compressed-size
end-ds;

//------------------------------------------------------------------//
// Main //
//------------------------------------------------------------------//
dcl-procmain;

dcl-sLocStmfvarchar(100);

exec sqlsetoption datfmt=*iso, timfmt=*iso, commit=*chg,
 closqlcsr=*endactgrp;

LocStmf='/tmp/js/test.js';

exec sqlset:DsFile.SrcData=get_clob_from_file(:LocStmf);

ifsqlcode>=*zeroandDsFile.SrcData_len>*zero;
urlEncode(DsFile);
minifyData(DsFile);
parseResult(DsFile);
endif;

end-proc;
//------------------------------------------------------------------//
// Url-encode data //
//------------------------------------------------------------------//
dcl-procurlEncode;
dcl-pi*n;
PiFilelikeds(DsFile);
end-pi;

dcl-sLocDatavarchar(1000); // data to encode
dcl-sLocSizeuns(10) inz(%len(LocData)); // encode size
dcl-sLocEncvarchar(30000); // encoded data
dcl-sLocEncSizeuns(10); // encoded size
dcl-sLocStartuns(10); // start position
dcl-sLocRestuns(10); // rest bytes
dcl-sLocInduns(10); // index

LocRest=PiFile.SrcData_len;

douLocEncSize>=PiFile.SrcData_len;
LocInd+=1;

LocStart= (LocSize* (LocInd-1)) +1;

ifLocRest>=LocSize;
LocRest-=LocSize;
LocData=%subst(PiFile.SrcData_data:LocStart:LocSize);
exec sqlset:LocEnc=systools.urlencode(:LocData,'UTF-8');
exec sqlset:PiFile.EncData=:PiFile.EncDataconcat:LocEnc;
LocEncSize+=LocSize;
else;
LocData=%subst(PiFile.SrcData_data:LocStart:LocRest);
exec sqlset:LocEnc=systools.urlencode(:LocData,'UTF-8');
exec sqlset:PiFile.EncData=:PiFile.EncDataconcat:LocEnc;
LocEncSize+=LocRest;
endif;

enddo;

end-proc;
//------------------------------------------------------------------//
// Minify data with Google Closure Compiler //
//------------------------------------------------------------------//
dcl-procminifyData;
dcl-pi*n;
PiFilelikeds(DsFile);
end-pi;

dcl-sLocDatasqltype(CLOB:1000000); // CLOB 1 MB

dcl-sLocURLvarchar(256);
dcl-sLocHeadervarchar(256);
dcl-sLocOptionsvarchar(256);

LocURL='https://closure-compiler.appspot.com/compile';

LocHeader=
'<httpHeader connectTimeout="2000" readTimeout="20000">'+
'<header name="Content-Type" '+
'value="application/x-www-form-urlencoded"/>'+
'</httpHeader>';

LocOptions=
'compilation_level=WHITESPACE_ONLY&'+
'output_format=json&'+
'output_info=statistics&'+
'output_info=warnings&'+
'output_info=errors&'+
'output_info=compiled_code&'+
'js_code=';

exec sqlset:LocData=:LocOptionsconcat:PiFile.EncData;

exec sql
valuessystools.httppostclob
 (:LocURL, :LocHeader, :LocData)
into:PiFile.MinData;

sqlcode=sqlcode;

end-proc;
//------------------------------------------------------------------//
// Parse result data from Google and write result to IFS //
//------------------------------------------------------------------//
dcl-procparseResult;
dcl-pi*n;
PiFilelikeds(DsFile);
end-pi;

dcl-sLocClobFilesqltype(CLOB_FILE); // Clob-File

exec sql
select x.*
into:DsData
fromjson_table (:PiFile.MinData, '$'
columns(
 MinCode clob(1M) path'$.compiledCode',
 SrcSize intpath'$.statistics.originalSize',
 CmpSize intpath'$.statistics.compressedSize'
 )
 ) as x;

ifsqlcode>=*zero;
LocClobFile_fo=SQFOVR;
LocClobFile_name='/tmp/js/test_min.js';
LocClobFile_nl=%len(%trim(LocClobFile_name));

exec sqlset:LocClobfile=:DsData.MinCode; // write to IFS
endif;

end-proc;
//------------------------------------------------------------------//