(Objective-C) XLSX Convert Sheet to CSV

Open an Excel spreadsheet (.xlsx) and loads a sheet into a CSV object.

Note: This example requires Chilkat v11.3.0 or greater.

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#import <CkoZip.h>
#import <CkoCsv.h>
#import <CkoStringTable.h>
#import <NSString.h>

BOOL success = NO;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// .xlsx files are Zip archives
CkoZip *zip = [[CkoZip alloc] init];
success = [zip OpenZip: @"qa_data/excel/fakeCompanies.xlsx"];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

CkoCsv *csv = [[CkoCsv alloc] init];
CkoStringTable *sheetNames = [[CkoStringTable alloc] init];
success = [csv XlsxGetSheets: zip sheetNames: sheetNames];
if (success == NO) {
    NSLog(@"%@",csv.LastErrorText);
    return;
}

if ([sheetNames.Count intValue] == 0) {
    NSLog(@"%@",@"There are no sheets in the .xlsx");
    return;
}

// Get the name of the 1st sheet.
NSString *sheetName = [sheetNames StringAt: [NSNumber numberWithInt: 0]];

// Load the 1st sheet into the CSV.
// We could've also loaded the 1st sheet by passing an empty string for the sheet name.
success = [csv XlsxLoadSheet: zip sheetName: sheetName];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

// The Chilkat CSV API can now be used to read, modify, or insert cells.
// ...
// ...

NSString *csvStr = [csv SaveToString];
NSLog(@"%@",csvStr);

// Sample output:
// CompanyName,Address,City,State,Zip,Phone
// Acme Innovations LLC,7428 Westbrook Blvd,Oak Bend,IL,60514,630-555-2398
// BlueHorizon Data Systems,1850 Crestline Park Suite 210,Rivergate,CA,92814,714-555-8821
// Pinnacle Manufacturing Corp,3912 Industrial Loop,Maple Ridge,TX,77301,281-555-4477
// Evergreen Analytics Inc,1250 Highland Terrace,Stonefield,WA,98290,425-555-9914
// NovaTech Solutions Group,578 Marketview Drive,Clearwater,FL,33760,727-555-6032

// Save to a .csv file.
success = [csv SaveFile2: @"c:/temp/qa_output/fakeCompanies.csv" charset: @"utf-8"];
if (success == NO) {
    NSLog(@"%@",csv.LastErrorText);
    return;
}