Question

Replace all commas with ","...unless the comma is already between quotes?

Asked by: Cardguy

OK, since Excel incorrectly formats CSV files (it does not put quotes around all fields, which is the standard), ODBC has problems with data formats.  I won't bore you with the details here.

Anyway, our solve was to try and correct the CSV file before we query it.  So, this is what we need to do.

Here are two sample data sets we need to convert:

DataSet 1
-----------
Column1,Column2,Column3
aaaaa,bbbbb,ccccc
ababa,"baba, baba",cdcdcd
ffffff,,dddddd

(notice that the 2nd row, 2nd column has quotes around the field since there is a comma in that field)

DataSet 2
-----------
"Column1","Column2","Column3"
"ssssss","tttttt","uuuuuu"
"vvvvvvvv","wwwwww","xxxxxx"
"yyyyy","zzzzzz","1111111"

(this data set is properly formated, with quotes around all fields)

We will get CSV files in both formats, so we need to account for both.

So, what we need to do is:
- change all commas to "," unless that comma is already between quotes.  Then, you would have to replace ," with ","...as in the DataSet 1
- add " to the beginning and end of the line
- do the above steps only if the file is not formatted like Dataset 2


Is this possible?  I don't even know where to begin on having CF perform a find and replace this complex.

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Asked On
2004-06-16 at 12:28:41ID21027934
Tags

replace

,

comma

Topic

ColdFusion Application Server

Participating Experts
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Answers

 

by: pinaldavePosted on 2004-06-16 at 12:45:23ID: 11328193

 

by: CardguyPosted on 2004-06-16 at 12:47:42ID: 11328216

I know how to use the replace expressions.  The problem that I am having is the intelligence to ignore commas that are between quotes (row 2, field 2 in dataset 1)....and also not modify files that already have the quotes in there (dataset 2)

 

by: pinaldavePosted on 2004-06-16 at 13:30:02ID: 11328673

Okey you can do this easily though this is not most efficient.
first replace all the  ," with , only.
<cfif "," do nothing>
<cfelse>
replace , with ","
</cfif>

regards,
---Pinal

 

by: Dain_AndersonPosted on 2004-06-16 at 14:16:21ID: 11329059

There's a UDF that will do this, but you still have to strip double quotes (I didn't write it):

<cfscript>
/**
 * CSVFormat accepts the name of an existing query and converts it to csv format.
 * Updated version of UDF orig. written by Simon Horwith
 *
 * @param query        The query to format.
 * @param qualifer        A string to qualify the data with.
 * @param columns        The columns ot use. Defaults to all columns.
 * @return A CSV formatted string.
 * @author Jeff Howden (jeff@members.evolt.org)
 * @version 2, December 3, 2001
 */
function CSVFormat(query)
{
  var returnValue = ArrayNew(1);
  var rowValue = '';
  var columns = query.columnlist;
  var qualifier = '';
  var i = 1;
  var j = 1;
  if(ArrayLen(Arguments) GTE 2) qualifier = Arguments[2];
  if(ArrayLen(Arguments) GTE 3 AND Len(Arguments[3])) columns = Arguments[3];
  returnValue[1] = ListQualify(columns, qualifier);
  ArrayResize(returnValue, query.recordcount + 1);
  columns = ListToArray(columns);
  for(i = 1; i LTE query.recordcount; i = i + 1)
  {
    rowValue = ArrayNew(1);
    ArrayResize(rowValue, ArrayLen(columns));
    for(j = 1; j LTE ArrayLen(columns); j = j + 1)
      rowValue[j] = qualifier & query[columns[j]][i] & qualifier;
    returnValue[i + 1] = ArrayToList(rowValue);
  }            
  returnValue = ArrayToList(returnValue, Chr(13));
  return returnValue;
}
</cfscript>

<!--- Kill double quotes --->
<CFSET CSV = REReplace(CSVFormat(CSV, '"'), """""", """", "ALL")>

This is assuming you're sending it a query called CSV.

-Dain

 

by: Tacobell777Posted on 2004-06-16 at 15:16:10ID: 11329485

If you are using MS SQL, use DTS to import the file into a table, even a temp table if you have to, it will still be faster than the processing you want to do with CF.

Have you tried OPENQUERY or OPENDATASOURCE and read the CSV? If that still gives you trouble you could do a CAST( x AS SMALLDATETIME) or something....

Let me know if you want to go this way and need more help..

 

by: anandkpPosted on 2004-06-17 at 02:12:09ID: 11332799

Hi, give this one a try - shld work for sure ...

Since i dont have the recordsets - i am using CFSETS to give a demo of what ive done - notice that i have my CFSETs enclosed in single quotes ['] - so it dosent clash with the existing ["] in ur recordset ...

<CFSET X1 = '"Column1,Column2,Column3"'>
<CFSET X2 = '"aaaaa,bbbbb,ccccc"'>
<CFSET X3 = 'ababa,"baba, baba",cdcdcd'>
<CFSET X4 = '"ffffff,,dddddd"'>
<CFSET X5 = '"Column1","Column2","Column3"'>
<CFSET X6 = '"ssssss","tttttt","uuuuuu"'>
<CFSET X7 = '"vvvvvvvv","wwwwww","xxxxxx"'>
<CFSET X8 = '"yyyyy","zzzzzz","1111111"'>

<CFOUTPUT>
      <CFLOOP INDEX="i" FROM="1" TO="8">            
            <CFSET "X#i#" = ListQualify(Evaluate('X#i#'),'"',',','All')><!--- Qualify all the elements with ["] --->
            #Replace(Evaluate('X#i#'),'""','"','All')#<BR><!--- Replace the [""] quotes with ["] as some already have ["] --->            
      </CFLOOP>
</CFOUTPUT>

let me know ...

K'Rgds
Anand

 

by: CardguyPosted on 2004-06-17 at 05:24:04ID: 11333781

I think I will attempt the DTS package.  My original concern with that course was error trapping...but I found a link that shows how to do that.

http://www.pengoworks.com/index.cfm?action=articles:spExecuteDTS

So, a suggestion to all who use CSV files coming from Excel....if you use MS SQL, use a DTS package.  Until either Macromedia adds the ability to Microsoft corrects all their horrible code in Excel and the ODBC text driver, this is the best course of action.

20120131-EE-VQP-002

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