C
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.
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#include <C_CkHttp.h>
#include <C_CkBinData.h>
#include <C_CkHtmlToXml.h>
#include <C_CkStringBuilder.h>
#include <C_CkXml.h>
#include <C_CkCsv.h>
void ChilkatSample(void)
{
BOOL success;
HCkHttp http;
HCkBinData bdHtml;
HCkHtmlToXml htx;
HCkStringBuilder sbXml;
HCkXml xml;
int numRemoved;
int i;
int count_i;
const char *table_role;
const char *table_data_scrollx;
const char *table_data_sortdirection;
const char *table_data_sorton;
const char *table_id;
int j;
int count_j;
const char *tr_role;
int k;
int count_k;
const char *tagPath;
const char *text;
HCkCsv csv;
const char *csvStr;
success = FALSE;
// 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
http = CkHttp_Create();
bdHtml = CkBinData_Create();
success = CkHttp_QuickGetBd(http,"https://example-code.com/data/etf_table.html",bdHtml);
if (success != TRUE) {
printf("%s\n",CkHttp_lastErrorText(http));
CkHttp_Dispose(http);
CkBinData_Dispose(bdHtml);
return;
}
// Convert to XML.
htx = CkHtmlToXml_Create();
CkHtmlToXml_SetHtmlBd(htx,bdHtml);
sbXml = CkStringBuilder_Create();
CkHtmlToXml_ToXmlSb(htx,sbXml);
xml = CkXml_Create();
CkXml_LoadSb(xml,sbXml,TRUE);
// Remove attributes and sub-trees we don't need.
// (In other words, we're getting rid of clutter...)
numRemoved = CkXml_PruneTag(xml,"thead");
numRemoved = CkXml_PruneAttribute(xml,"style");
numRemoved = CkXml_PruneAttribute(xml,"class");
// Scrub the element and attribute content.
CkXml_Scrub(xml,"ContentTrimEnds,ContentTrimInside,AttrTrimEnds,AttrTrimInside");
// Let's see what we have...
printf("%s\n",CkXml_getXml(xml));
// 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:
//
i = 0;
count_i = CkXml_NumChildrenHavingTag(xml,"html|body|div");
while (i < count_i) {
CkXml_putI(xml,i);
table_role = CkXml_chilkatPath(xml,"html|body|div[i]|div|table|(role)");
table_data_scrollx = CkXml_chilkatPath(xml,"html|body|div[i]|div|table|(data-scrollx)");
table_data_sortdirection = CkXml_chilkatPath(xml,"html|body|div[i]|div|table|(data-sortdirection)");
table_data_sorton = CkXml_chilkatPath(xml,"html|body|div[i]|div|table|(data-sorton)");
table_id = CkXml_chilkatPath(xml,"html|body|div[i]|table|(id)");
table_role = CkXml_chilkatPath(xml,"html|body|div[i]|table|(role)");
table_data_scrollx = CkXml_chilkatPath(xml,"html|body|div[i]|table|(data-scrollx)");
table_data_sortdirection = CkXml_chilkatPath(xml,"html|body|div[i]|table|(data-sortdirection)");
table_data_sorton = CkXml_chilkatPath(xml,"html|body|div[i]|table|(data-sorton)");
j = 0;
count_j = CkXml_NumChildrenHavingTag(xml,"html|body|div[i]|table|tbody|tr");
while (j < count_j) {
CkXml_putJ(xml,j);
tr_role = CkXml_chilkatPath(xml,"html|body|div[i]|table|tbody|tr[j]|(role)");
k = 0;
count_k = CkXml_NumChildrenHavingTag(xml,"html|body|div[i]|table|tbody|tr[j]|td");
while (k < count_k) {
CkXml_putK(xml,k);
text = CkXml_getChildContent(xml,"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.
csv = CkCsv_Create();
CkCsv_SetColumnName(csv,0,"Ticker");
CkCsv_SetColumnName(csv,1,"Name");
CkCsv_SetColumnName(csv,2,"Sector");
CkCsv_SetColumnName(csv,3,"Country");
CkCsv_SetColumnName(csv,4,"Weight");
CkCsv_SetColumnName(csv,5,"Notional Vaue");
i = 0;
count_i = CkXml_NumChildrenHavingTag(xml,"html|body|div");
while (i < count_i) {
CkXml_putI(xml,i);
j = 0;
count_j = CkXml_NumChildrenHavingTag(xml,"html|body|div[i]|table|tbody|tr");
while (j < count_j) {
CkXml_putJ(xml,j);
k = 0;
count_k = CkXml_NumChildrenHavingTag(xml,"html|body|div[i]|table|tbody|tr[j]|td");
while (k < count_k) {
CkXml_putK(xml,k);
CkCsv_SetCell(csv,j,k,CkXml_getChildContent(xml,"html|body|div[i]|table|tbody|tr[j]|td[k]|text"));
k = k + 1;
}
j = j + 1;
}
i = i + 1;
}
CkCsv_SaveFile(csv,"qa_output/brasil_etf.csv");
csvStr = CkCsv_saveToString(csv);
printf("%s\n",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"
//
CkHttp_Dispose(http);
CkBinData_Dispose(bdHtml);
CkHtmlToXml_Dispose(htx);
CkStringBuilder_Dispose(sbXml);
CkXml_Dispose(xml);
CkCsv_Dispose(csv);
}