Objective-C
Objective-C
HTML Table to CSV
See more HTML-to-XML/Text Examples
Demonstrates a method for converting an HTML table to a CSV file.Note: This example requires Chilkat v9.5.0.77 or greater.
Chilkat Objective-C Downloads
#import <CkoHttp.h>
#import <CkoBinData.h>
#import <CkoHtmlToXml.h>
#import <CkoStringBuilder.h>
#import <CkoXml.h>
#import <NSString.h>
#import <CkoCsv.h>
BOOL success = NO;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// First download the HTML containing the table
CkoHttp *http = [[CkoHttp alloc] init];
CkoBinData *bdHtml = [[CkoBinData alloc] init];
success = [http QuickGetBd: @"https://example-code.com/data/etf_table.html" binData: bdHtml];
if (success != YES) {
NSLog(@"%@",http.LastErrorText);
return;
}
// Convert to XML.
CkoHtmlToXml *htx = [[CkoHtmlToXml alloc] init];
[htx SetHtmlBd: bdHtml];
CkoStringBuilder *sbXml = [[CkoStringBuilder alloc] init];
[htx ToXmlSb: sbXml];
CkoXml *xml = [[CkoXml alloc] init];
[xml LoadSb: sbXml autoTrim: YES];
// Remove attributes and sub-trees we don't need.
// (In other words, we're getting rid of clutter...)
int numRemoved = [[xml PruneTag: @"thead"] intValue];
numRemoved = [[xml PruneAttribute: @"style"] intValue];
numRemoved = [[xml PruneAttribute: @"class"] intValue];
// Scrub the element and attribute content.
[xml Scrub: @"ContentTrimEnds,ContentTrimInside,AttrTrimEnds,AttrTrimInside"];
// Let's see what we have...
NSLog(@"%@",[xml GetXml]);
// We have the following XML.
// Copy this XML into the online tool at Generate Parsing Code from XML
// as a starting point for accessing the data..
// <?xml version="1.0" encoding="utf-8"?>
// <root>
// <html>
// <head>
// <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
// </head>
// <body text="#000000" bgcolor="#FFFFFF">
// <div>
// <div>
// <table role="grid" data-scrollx="true" data-sortdirection="desc" data-sorton="-1"/>
// </div>
// </div>
// <div>
// <table id="topHoldingsTable" role="grid" data-scrollx="true" data-sortdirection="desc" data-sorton="-1">
// <tbody>
// <tr role="row">
// <td>
// <text>ITUB4</text>
// </td>
// <td>
// <text>ITAU UNIBANCO HOLDING PREF SA</text>
// </td>
// <td>
// <text>Financials</text>
// </td>
// <td>
// <text>Brazil</text>
// </td>
// <td>
// <text>10.94</text>
// </td>
// <td>
// <text>998,954,813.73</text>
// </td>
// </tr>
// <tr role="row">
// <td>
// <text>BBDC4</text>
// </td>
// <td>
// <text>BANCO BRADESCO PREF SA</text>
// </td>
// <td>
// <text>Financials</text>
// </td>
// <td>
// <text>Brazil</text>
// </td>
// <td>
// <text>9.01</text>
// </td>
// <td>
// <text>822,164,622.75</text>
// </td>
// </tr>
// ...
// ...
// ...
// </tbody>
// </table>
// </div>
// </body>
// </html>
// </root>
//
// This is the code generated by the online tool:
//
int i;
int count_i;
NSString *table_role = 0;
NSString *table_data_scrollx = 0;
NSString *table_data_sortdirection = 0;
NSString *table_data_sorton = 0;
NSString *table_id = 0;
int j;
int count_j;
NSString *tr_role = 0;
int k;
int count_k;
NSString *tagPath = 0;
NSString *text = 0;
i = 0;
count_i = [[xml NumChildrenHavingTag: @"html|body|div"] intValue];
while (i < count_i) {
xml.I = [NSNumber numberWithInt: i];
table_role = [xml ChilkatPath: @"html|body|div[i]|div|table|(role)"];
table_data_scrollx = [xml ChilkatPath: @"html|body|div[i]|div|table|(data-scrollx)"];
table_data_sortdirection = [xml ChilkatPath: @"html|body|div[i]|div|table|(data-sortdirection)"];
table_data_sorton = [xml ChilkatPath: @"html|body|div[i]|div|table|(data-sorton)"];
table_id = [xml ChilkatPath: @"html|body|div[i]|table|(id)"];
table_role = [xml ChilkatPath: @"html|body|div[i]|table|(role)"];
table_data_scrollx = [xml ChilkatPath: @"html|body|div[i]|table|(data-scrollx)"];
table_data_sortdirection = [xml ChilkatPath: @"html|body|div[i]|table|(data-sortdirection)"];
table_data_sorton = [xml ChilkatPath: @"html|body|div[i]|table|(data-sorton)"];
j = 0;
count_j = [[xml NumChildrenHavingTag: @"html|body|div[i]|table|tbody|tr"] intValue];
while (j < count_j) {
xml.J = [NSNumber numberWithInt: j];
tr_role = [xml ChilkatPath: @"html|body|div[i]|table|tbody|tr[j]|(role)"];
k = 0;
count_k = [[xml NumChildrenHavingTag: @"html|body|div[i]|table|tbody|tr[j]|td"] intValue];
while (k < count_k) {
xml.K = [NSNumber numberWithInt: k];
text = [xml GetChildContent: @"html|body|div[i]|table|tbody|tr[j]|td[k]|text"];
k = k + 1;
}
j = j + 1;
}
i = i + 1;
}
// Let's modify the above code to build the CSV.
CkoCsv *csv = [[CkoCsv alloc] init];
[csv SetColumnName: [NSNumber numberWithInt: 0] columnName: @"Ticker"];
[csv SetColumnName: [NSNumber numberWithInt: 1] columnName: @"Name"];
[csv SetColumnName: [NSNumber numberWithInt: 2] columnName: @"Sector"];
[csv SetColumnName: [NSNumber numberWithInt: 3] columnName: @"Country"];
[csv SetColumnName: [NSNumber numberWithInt: 4] columnName: @"Weight"];
[csv SetColumnName: [NSNumber numberWithInt: 5] columnName: @"Notional Vaue"];
i = 0;
count_i = [[xml NumChildrenHavingTag: @"html|body|div"] intValue];
while (i < count_i) {
xml.I = [NSNumber numberWithInt: i];
j = 0;
count_j = [[xml NumChildrenHavingTag: @"html|body|div[i]|table|tbody|tr"] intValue];
while (j < count_j) {
xml.J = [NSNumber numberWithInt: j];
k = 0;
count_k = [[xml NumChildrenHavingTag: @"html|body|div[i]|table|tbody|tr[j]|td"] intValue];
while (k < count_k) {
xml.K = [NSNumber numberWithInt: k];
[csv SetCell: [NSNumber numberWithInt: j] col: [NSNumber numberWithInt: k] content: [xml GetChildContent: @"html|body|div[i]|table|tbody|tr[j]|td[k]|text"]];
k = k + 1;
}
j = j + 1;
}
i = i + 1;
}
[csv SaveFile: @"qa_output/brasil_etf.csv"];
NSString *csvStr = [csv SaveToString];
NSLog(@"%@",csvStr);
// Our CSV looks like this:
// Ticker,Name,Sector,Country,Weight,Notional Vaue
// ITUB4,ITAU UNIBANCO HOLDING PREF SA,Financials,Brazil,10.94,"998,954,813.73"
// BBDC4,BANCO BRADESCO PREF SA,Financials,Brazil,9.01,"822,164,622.75"
// VALE3,CIA VALE DO RIO DOCE SH,Materials,Brazil,8.60,"785,290,260.07"
// PETR4,PETROLEO BRASILEIRO PREF SA,Energy,Brazil,5.68,"518,124,434.10"
// PETR3,PETROBRAS,Energy,Brazil,4.86,"443,254,438.53"
// B3SA3,B3 BRASIL BOLSA BALCAO SA,Financials,Brazil,4.57,"417,636,740.16"
// ABEV3,AMBEV SA,Consumer Staples,Brazil,4.57,"417,216,913.63"
// BBAS3,BANCO DO BRASIL SA,Financials,Brazil,3.25,"296,921,232.15"
// ITSA4,ITAUSA INVESTIMENTOS ITAU PREF SA,Financials,Brazil,2.90,"265,153,684.52"
// LREN3,LOJAS RENNER SA,Consumer Discretionary,Brazil,2.25,"205,832,175.98"
//