Zig

CSV Set Cell by Index or Name

Demonstrates how to update the value of a CSV cell, or add new cells. Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // We have the following CSV...

    // permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
    // lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
    // mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
    // flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
    // infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a
    // gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed

    const b_crlf = true;
    const sb = try chilkat.StringBuilder.init();
    defer sb.deinit();
    sb.appendLine("permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round", b_crlf) catch {};
    sb.appendLine("lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b", b_crlf) catch {};
    sb.appendLine("mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed", b_crlf) catch {};
    sb.appendLine("flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a", b_crlf) catch {};
    sb.appendLine("infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a", b_crlf) catch {};
    sb.appendLine("gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed", b_crlf) catch {};

    const csv = try chilkat.Csv.init();
    defer csv.deinit();

    csv.setHasColumnNames(true);
    try csv.loadFromString(try sb.getAsString(alloc));

    // Update the city "Gilbert" to "Tuscon".
    csv.setCell(3, 4, "Tuscon") catch {};

    // Add a new row.
    const row_idx = csv.getNumRows();
    csv.setCellByName(row_idx, "permalink", "yelp") catch {};
    csv.setCellByName(row_idx, "company", "Yelp") catch {};
    csv.setCellByName(row_idx, "numEmps", "") catch {};
    csv.setCellByName(row_idx, "category", "web") catch {};
    csv.setCellByName(row_idx, "city", "San Francisco") catch {};
    csv.setCellByName(row_idx, "state", "CA") catch {};
    csv.setCellByName(row_idx, "fundedDate", "1-Jul-04") catch {};
    csv.setCellByName(row_idx, "raisedAmt", "1000000") catch {};
    csv.setCellByName(row_idx, "raisedCurrency", "USD") catch {};
    csv.setCellByName(row_idx, "round", "a") catch {};

    // Show the updated CSV:
    std.debug.print("{s}\n", .{try csv.saveToString(alloc)});

    // Output should be:
    // permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
    // lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
    // mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
    // flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
    // infusionsoft,Infusionsoft,105,software,Tuscon,AZ,1-Oct-07,9000000,USD,a
    // gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed
    // yelp,Yelp,,web,San Francisco,CA,1-Jul-04,1000000,USD,a
}