Software:
Cortex Neural Networks
Indicators pack
Stock Downloader
Chart patterns
Options basics
Indicators pack:
Accum / Distrib line
Aroon
ATR
Bollinger Bands
CCI
CLV
MACD
Momentum
Point
and Figure
PPO
PVO
RSI
StochRSI
Stochastic Oscillator
Ultimate Oscillator
Williams %R
Contents
Stock Downloader is script-based
package, that can be run from the
Cortex program. It contains three independent scripts: two for
downloading the day end data, and one for intraday quotes.
Both stock quotes and Forex quotes can be obtained.
In addition to downloading quotes from the Internet, scripts can
create price charts.
To obtain the day-end quotes, you need to simply run a program once.
To get intraday quotes in near-real time, you need to run the
program periodically, say, once per minute. The
Cortex program can do
it, by running the script that you specified, by the timer.
In this tutorial, we will walk through the
Stock Downloader's code, step by step.
We assume, that you are already familiar with the
Cortex's built-in
scripting language
We can not guarantee, that the Internet sources, for which the
Stock Downloader is currently configured,
will be available in future, as we do not controm these sources.
However, the script uses simple rules, that can be overwritten
by the user, to download the data from almost any data source,
that is available by HTTP protocol.
Therefore, the Internet data sources, that the scripts are
currently configured to obtain the data from, should only be
considered as an example (though they worked reliably for last
three years by the moment of this writing).
Intraday stock quotes obtained from the
yahoo historical stock quote server are 15 minutes delayed.
Changing the settings of the Stock Downloader
requires some minimal familiarity with the
Cortex's
built-in scripting language. For example, to edit the
list of stocks, the program downloads quotes for, from, say,
msft and genz to yhoo and ibm, you need to edit the following code:
and to replace it with
To change the Internet data source may require more advanced coding,
but it still is not very difficult.
You will be able to add/remove symbols you want to download data for,
to specify the start date / end date for the day end quotes, and
start time / end time for the intraday quotes. Then you click
"run" and wait. The rest of work is done for you automatically.
As the Cortex's
built-in scripting language has powerfull charting and
data representation tools, advanced users will be able to
edit the scripts to create HTML or XML tables with stock and/or
forex quotes, to calculate and plot indicators and so on.
As was already mentioned, the program can download and parse any or
almost any file, available through the HTTP protocol. It comes
with the preconfigured "beginner's" settings, that allow to retrieve
stock quotes from the Yahoo, as this is probably the most reliable and
easy to use service.
Using the program's built-in language, you can download and parse
pages from other sources, for example, you can extract some specific
indexes or even the data that have little to do with the stock
market, like the up-to-date price of a Barby doll. Then you can
incorporate this information into your data files and use whatever
analysing software you want.
You also have an access to math, graphics and much more. For example,
you can download 1 minute quotes, and draw the price chart, as new data
become available.
You can also perform some additional tasks, like data import-export,
data transformations and so on.
Use this file to download day end stock and Forex quotes. Unlike
the DAY_END_CHART.TSC, this file does not produce the chart.
As was mentioned above, the Internet data sources we use should
be considered as examples only, the end user can alter the code to
download data from other sources.
DAY_END.TSC, part 1
Here, we have created lists of strings, to hold names of stock
and Forex symbols. The actual symbols we used are just examples,
to download other symbols, you will have to edit this code.
DAY_END.TSC, part 2
To download files from the Internet, we need to know their URL.
As Internet data sources usually use CGI, the URL contains parameters,
specifying the start and end date, stock / forex symbol and so on.
Instead of these parameters, we provide a placeholder, within angle
brackets. Later, we will create code, that will replace these placeholders
with symbol(s) we need.
Also note, that we use Yahoo stock server for stock quotes and ChartFlow
server for Forex quotes. There are two reasons: first, Yahoo does not
provide Forex data, second, ChartFlow (unlike Yahoo) does not provide
text files, only HTML. It gives us a good chance to examine the code
that removes HTML decorations, retrieving data in form of a text table.
In addition to connect strings, we need to specify start and end dates.
DAY_END.TSC, part 3
We open HTTP session, to do it, we have to be connected to the
Internet.
Then we call the DownloadSymbols function (see below) twice, once for
stocks and then for Forex. Each time we pass corresponding array with
names of symbols, connect string etc.
DAY_END.TSC, part 4
In the code above, we replace the placeholders with values for
particular symbols, resulting string can be understood by the data
source server.
Then we call GET_HTTP, that downloads the Internet page, and stores it in
a string.
DAY_END.TSC, part 5
After the Internet page is downloaded, we need to save in on disk. In
case of stocks, we save file with .STK extention, in case of
Forex - with .FOR
Also, we don't have to do anything with the contents of stock quotes
file, as Yahoo can return text files (CSV). The Forex file,
on the other hand, contains HTML table, with some irrelevant text
before it (header) and after it (footer).
To take a look at the original file, comment all the replacements, so that
the file is saved on disk as it is.
First, we need to find the beginning of the data. The file contains a string,
saying "Results of your query", and as we can easily find out by performing
the search in any text editor, it occures only once. So we search for
the word "Query":
In addition to HTML table tags, the file contains some extra tabs and
curriage return - line feed characters. We remove them, because we want
to have full control over the tabulations and new lines:
We want to have a new line where <tr> used to be, tab, where
</td> used to be, all the other table decorations should be
removed (replaced with empty strings).
Then, we need to replace "/" with ".". as SLANG does not understand
DD/MM/YYYY date format, but it understands DD.MM.YYYY:
Finally, after all changes, we have one last decoration left, at the
end of the file:
Essentially, it is the same file as the one we just studied. The
only difference is that we are creating XML file with charts,
one image per symbol, and display it, after the download is complete.
To learn XML, visit the
Free online XML tutorial.
In two words, the idea of XML-XSL pair of files working together is
that XML contains data only, while XSL provides the format (how to
display these data). You can use XML files that come with
Stock Downloader, or you can create your own.
The script file we are about to examine creates XML file, containing
names of images (charts) and some additional information, it uses
XSL files that come with Stock Downloader.
Essentially, the code is very similar to the DAY_END.TSC, so we will only
focus on signifficant differences.
DAY_END_CHART.TSC, part A
We call the Chart() function (see below) twice, for an array of stock names,
and for an array of Forex names. The function returns XML string, that
we pass to SAVE_XML. The SAVE_XML adds the header to the XML string, and
saves it to the file. Finally, we call SHOW_XML, to display the result.
DAY_END_CHART.TSC, part B
We are going to save data to the "stocks" and "forex" subdirectories,
correspondingly. The code above assigns the variables with the names
of these directories.
Also, we create arrays for date and price information. For this particular
script, we plot Close price, but of course, you can edit the code
to plot something else.
DAY_END_CHART.TSC, part C
Here, two important things are happening. First, for each symbol, we build the
name of the file, by adding together the directory, symbol name and the
extention. Then we download a previously saved file from the disk.
Second, we build the XML string, adding code, that will be responsible for
displaying this particular symbol's data.
This script is different from the two above, because it is supposed to
be run by the timer. The timer works through two different functions
(instead of "main") "init" and "timer".
Init is called the first time the script run, timer - every other time.
Note, that in our script there is a "main" function as well. It is not
mandatory, but by adding it, we allow the user to run the script "by hand".
Also note, that the script uses some important assumptions about your
time zone. Make sure, the numbers are correct, so that the program begin and
end downloading in synch with the market.
In the code below, we are going to walk through the code, step by step.
INTRADAY.TSC, part 1
Just to allow the script to be run "by hand", we have created this function.
All it does, is calling the "init" function.
INTRADAY.TSC, part 2
First of all, we are creating two lists, one for stocks and one for
Forex symbols. The user is supposed to customize these lists.
Then, we need connection strings. This script is using Yahoo stock server,
as one of the most reliable and friendly. However, you can use some other
data sources, if you choose to.
The start and end times are for stock market only, as Forex is opened
24/5. These times are what Yahoo uses.
The time difference is the difference between your time zone and Yahoo.
If according to your clock, the Yahoo data begin changing in 8.45, and
on Yahoo site it says 9.45, then the time difference is "-1".
INTRADAY.TSC, part 3
The nTimerCounter variable is for your convenience only.
We assign 3 variables, one for data directory, one for the subdirectory,
containing stock intraday prices, and one - for Forex prices.
Finally, we create two "wrappers" (see the SLANG reference), one for
arrays we use to keep stock data, and one - for Forex.
INTRADAY.TSC, part 4
The cycle handles the stock data, the one for Forex is right below it.
First, we create 3 arrays, for date (day, month, year), time (hour, minute)
and price. The date and time arrays are numeric, we use SLANG functions
(see SLANG reference, SCRIPT_MATH.DLL functions) to convert dates to
numbers and back.
Then we try to open the data file, that is supposed to be on disk (it is not
there the very first time we run a program), and if it is there, we close it,
and call TABLE_LOADER to download the data.
Finally, we create copies of these arrays and keep them in the hStocksWrapper.
This way, we can go through many cycles, using the same names for
arrays.
INTRADAY.TSC, part 5
The logic is the same, as for the stocks, described above.
The last line calls timer(). Note, that the first time you run the script
by the timer, init() will be called, and NOT timer(). If you want the timer()
to be called the first time, call it explicitely from init().
INTRADAY.TSC, part 6
The timer, depending on the day and time, may open the Internet
session to download the new data, or to refuse, because the market is
closed.
INTRADAY.TSC, part 7
Data transformations to the form we need. Also, we set strXmlSymbols
to an empty string. Later, we will add parts to it.
INTRADAY.TSC, part 8
If the time is between 9.45 and 16.00, we download the stock information,
then we download the Forex information. After it is done, we display the
result (XML).
INTRADAY.TSC, part 9
In addition to declaring variables that we will use later, this block of code
contains an important bit that works with the .TMP file. Every time
the timer() is called, the .TMP file will be rewritten, it contains the
last date-time-open-high-low-close-volume. The idea is to provide the
user with a simple way of working with the Stock Downloader from the
outside program. An example may be your own program, that is checking the
date and time, when the .TMP file was modified, and if it changes,
downloads the new stock / Forex quotes. The code that works with the
.TMP file can be removed, Stock Downloader does not use it anywhere else.
INTRADAY.TSC, part 10
For all stocks or Forex symbols, we download a new quotes info from the
Internet.
INTRADAY.TSC, part 11
The dates in the Yahoo file are quoted, so we need to replace the quotes
with empty strings. If the file is being created (it was not there before),
then we need to write header string, otherwise, it is already there.
The XML string is returned from the AssignArrays function, and added to
the existing XML string, this way we get all stock and Forex XML strings
together.
INTRADAY.TSC, part 12
First, we parse the data, that we have downloaded, using the GET_TOKEN
function. Then we build the XML string, that will hold the information
about the symbol we are currently processing.
INTRADAY.TSC, part 13
The WRAP_GET is used to access arrays we have previously stored in the wrapper.
Note, that for each symbol, we have stored 3 arrays (time, date, close), so
we use i, i + 1 and i + 2 to reference them.
Then we add new data at the end of an array, and create a PNG image for a chart
(and return a corresponding XML string).
Introduction
About program
About Internet data sources
Day end quotes at Yahoo server can be updated (by Yahoo) with a delay,
so you may want to download them few hours after the market closes,
if you want to make sure you have last day's data.
Beginners and Advanced Users
arrStockNames[0] = "msft";
arrStockNames[1] = "genz";
arrStockNames[0] = "yhoo";
arrStockNames[1] = "ibm";
Advanced Users
DAY_END.TSC
void main()
{
// First of all, clean the output window
OUT_CLEANUP();
// Arrays containing names of stock and Forex symbols
array_s arrForexNames = CREATE_ARRAY_S( 0);
array_s arrStockNames = CREATE_ARRAY_S( 0);
// Add symbols you want to download to these lists
arrForexNames[0] = "eurusd";
arrStockNames[0] = "msft";
...
// Connect string for FOREX, use <symbol>, for 'usdchf',
// <sym_1> and <sym_2> for 'usd' and 'chf',
// <start day>, <end day> <start month>,
// <end month>, <start year>, <end year>
string strConnectForex =
"http://www.chartflow.com/ozforex/historybasic.asp?
period=exact&ccy1=<sym_1>&ccy2=<sym_2>
&datefrom=<date_from>&dateto=<date_to>";
// Connect string for stocks, use <symbol>,
// <start day>, <end day>
// <start month>, <end month>,
// <start year>, <end year>
string strConnectStocks =
"http://table.finance.yahoo.com/table.csv?
s=<symbol<&d=<end month<&e=<end day<
&f=<end year<&g=d&a=<start month<
&b=<start day<&c=<start year<&ignore=.csv";
// Start and end dates for stock downloader
string strStartDay="01";
string strStartMonth="01";
string strStartYear="2000";
string strEndDay="10";
string strEndMonth="04";
string strEndYear="2004";
string strStockPath =
"c:\\s_projects\\CortexPro\\data\\stock_dl\\stocks\\";
string strForexPath =
"c:\\s_projects\\CortexPro\\data\\stock_dl\\forex\\";
...
PRINT("%s\r\n", "Opening Internet session...");
double bResult = OPEN_HTTP_SESSION();
if(bResult == 0)
{
PRINT("%s\r\n", "failed");
return;
}
DownloadSymbols("stock", arrStockNames, strConnectStocks,
strStartDay, strStartMonth,
strStartYear, strEndDay, strEndMonth, strEndYear, "");
DownloadSymbols("forex", arrForexNames, strConnectForex,
strStartDay, strStartMonth, strStartYear, strEndDay,
strEndMonth, strEndYear,
"Date Price\r\n ");
CLOSE_HTTP_SESSION();
}
...
void DownloadSymbols(string strType, array_s arrNames,
string strConnect, string strStartDay,
string strStartMonth, string strStartYear,
string strEndDay, string strEndMonth,
string strEndYear, string strHeader)
{
PRINT("Downloading %s information: ", strType);
double bIsStock = 0;
if(STR_CMP(strType, "stock") == 0)
{
bIsStock = 1;
}
for(double i = 0; i < ARRAY_SIZE(arrNames); i = i + 1)
{
PRINT("%s... ", arrNames[i]);
if(bIsStock == 1)
{
STR_REPLACE(strConnect, "
string strFileName;
if(bIsStock == 1)
{
strFileName = strStockPath + arrNames[i] + ".stk";
}
else
{
strFileName = strForexPath + arrNames[i] + ".for";
}
double hFile = F_OPEN(strFileName, "wb");
if(STR_LEN(strHeader) > 0)
{
F_PRINT(hFile, "%s\r\n", strHeader);
}
if(bIsStock == 1)
{
F_PRINT(hFile, "%s", strFile);
}
else
{
// Forex file is not in text format, so we
// need to remove HTML from it
string strTmp = STR_STR(strFile, "Query", 1);
strFile = STR_STR(strTmp, "<td width=\"50%\"
align=\"center\" bgcolor=\"#FFFFFF\">", 1);
strTmp = STR_STR(strFile, "</table>", 0);
STR_REPLACE(strTmp, "\t", "");
STR_REPLACE(strTmp, "\r", "");
STR_REPLACE(strTmp, "\n", "");
STR_REPLACE(strTmp, "<tr>", "\r\n");
STR_REPLACE(strTmp, "</tr>", "");
STR_REPLACE(strTmp, "</td>", "\t");
STR_REPLACE(strTmp, "<td width=\"50%\"
align=\"center\" bgcolor=\"#FFFFFF\">", "");
STR_REPLACE(strTmp, "<td width=\"50%\"
align=\"center\" bgcolor=\"#E1EDF7\">", "");
STR_REPLACE(strTmp, "/", ".");
strFile = STR_STR(strTmp, "<td align=", 0);
F_PRINT(hFile, "%s", strFile);
}
F_CLOSE(hFile);
}
}
string strTmp = STR_STR(strFile, "Query", 1);
STR_REPLACE(strTmp, "\t", "");
STR_REPLACE(strTmp, "\r", "");
STR_REPLACE(strTmp, "\n", "");
STR_REPLACE(strTmp, "<tr>", "\r\n");
STR_REPLACE(strTmp, "</tr>", "");
STR_REPLACE(strTmp, "</td>", "\t");
STR_REPLACE(strTmp, "<td width=\"50%\"
align=\"center\" bgcolor=\"#FFFFFF\">", "");
STR_REPLACE(strTmp, "<td width=\"50%\"
align=\"center\" bgcolor=\"#E1EDF7\">", "");
STR_REPLACE(strTmp, "/", ".");
strFile = STR_STR(strTmp, "<td align=", 0);
DAY_END_CHART.TSC
CLOSE_HTTP_SESSION();
PRINT("%s\r\n", "Creating charts...");
string strPath = "c:\\S_Projects\\CortexPro\\data\\stock_dl\\";
string strXml = Chart("<stocks>", arrStockNames);
strXml = strXml + Chart("<forex>", arrForexNames);
SAVE_XML(strPath + "images\\", "chart_dayend", "chart_dayend",
"root", strXml);
SHOW_XML(strPath + "images\\chart_dayend.xml");
string Chart(string strType, array_s arrNames)
{
double bIsStock = 0;
string strClose = "</forex>";
string strDataSubDir = "forex\\";
if(STR_CMP(strType, "<stocks>") == 0)
{
bIsStock = 1;
strClose = "</stocks>";
strDataSubDir = "stocks\\";
}
string strXML = strType;
string strSymbolName;
string strImagePath;
string strDataPath;
double bIsPathRelative = 0;
array arrDate = CREATE_ARRAY(0);
array arrClose = CREATE_ARRAY(0);
for(double i = 0; i < ARRAY_SIZE(arrNames); i = i + 1)
{
PRINT("\t%s... ", arrNames[i]);
strSymbolName = arrNames[i];
strImagePath = strPath + "images\\" + arrNames[i]
+ ".png";
strXML = strXML + "<symbol>";
strXML = strXML + "<symbol>";
strXML = strXML + strSymbolName;
strXML = strXML + "</symbol>";
strDataPath = strPath + strDataSubDir + arrNames[i];
if(bIsStock == 1)
{
TABLE_LOADER(strDataPath + ".stk",
bIsPathRelative, 1, "", 1,
"", 0, arrDate, 6, arrClose);
}
else
{
TABLE_LOADER(strDataPath + ".for",
bIsPathRelative, 1, "", 1,
"", 0, arrDate, 1, arrClose);
}
strXML = strXML + SAVE_CHART(400, 200, 1,
strImagePath, arrDate, arrClose);
strXML = strXML + "</symbol>";
strXML = strXML + strClose;
}
return strXML;
}
INTRADAY.TSC
void main()
{
init();
}
void init()
{
// List of stocks
array_s arrStockNames = CREATE_ARRAY_S(0);
arrStockNames[0] = "msft";
arrStockNames[1] = "genz";
// List of Forex symbols
array_s arrForexNames = CREATE_ARRAY_S(0);
arrForexNames[0] = "eurusd";
arrForexNames[1] = "eurchf";
// Connect string for stocks,
// use <symbol> for a stock name
string strConnectStocks =
"http://finance.yahoo.com/d/quotes.csv?
s=<symbol>&f=d1t1ohgl1v&e=.csv";
// Connect string for Forex,
// use <symbol> for a currency name
string strConnectForex =
"http://finance.yahoo.com/d/quotes.csv?
s=<symbol>=X&f=d1t1ba&e=.csv";
// Start and end time for stock downloader
double nStartHour=9;
double nStartMinute=45;
double nEndHour=16;
double nEndMinute=15;
// Time difference between local time and stock market
double nTimeDifference = -1;
double nTimerCounter = 0;
string strDataPath =
"c:\\s_projects\\CortexPro\\data\\stock_dl\\";
string strStockPath =
"c:\\s_projects\\CortexPro\\data\\stock_dl\\stocks_intra\\";
string strForexPath =
"c:\\s_projects\\CortexPro\\data\\stock_dl\\forex_intra\\";
string strSymbolName;
string strFullStockPath;
double hFile;
double hStocksWrapper = WRAP_CREATE();
double hForexWrapper = WRAP_CREATE();
for(double i = 0; i < ARRAY_SIZE(arrStockNames); i = i + 1)
{
strSymbolName = arrStockNames[i];
array arrDate = CREATE_ARRAY(0);
array arrTime = CREATE_ARRAY(0);
array arrClose = CREATE_ARRAY(0);
strFullStockPath = strStockPath + strSymbolName + ".stk";
hFile = F_OPEN(strFullStockPath, "r");
if(hFile != -1)
{
F_CLOSE(hFile);
TABLE_LOADER(strFullStockPath, 0, 0, "",
1, "", 0, arrTime, 1, arrDate, 7, arrClose);
}
WRAP_ADD(hStocksWrapper, arrTime); // 0
WRAP_ADD(hStocksWrapper, arrDate); // 1
WRAP_ADD(hStocksWrapper, arrClose); // 2
}
for(i = 0; i < ARRAY_SIZE(arrForexNames); i = i + 1)
{
strSymbolName = arrForexNames[i];
array arrDate = CREATE_ARRAY(0);
array arrTime = CREATE_ARRAY(0);
array arrClose = CREATE_ARRAY(0);
strFullStockPath = strForexPath + strSymbolName + ".for";
hFile = F_OPEN(strFullStockPath, "r");
if(hFile != -1)
{
F_CLOSE(hFile);
TABLE_LOADER(strFullStockPath, 0, 0, "",
1, "", 0, arrTime, 1, arrDate, 5, arrClose);
}
WRAP_ADD(hForexWrapper, arrTime); // 0
WRAP_ADD(hForexWrapper, arrDate); // 1
WRAP_ADD(hForexWrapper, arrClose); // 2
}
timer();
}
void timer()
{
OUT_CLEANUP();
PRINT("%.0f\r\n", nTimerCounter);
double bResult = 1;
string strXmlBody = "";
array arrDateInfo = TIME(nTimeDifference);
double nDayOfWeek = arrDateInfo[0];
double nYear = arrDateInfo[1];
double nMonth = arrDateInfo[2];
double nDay = arrDateInfo[3];
double nHour = arrDateInfo[4];
double nMinute = arrDateInfo[5];
double nSecond = arrDateInfo[6];
if(nDayOfWeek == 1 || nDayOfWeek == 7)
{
PRINT("%s\r\n", "The market is closed during the Weekend");
}
else
{
PRINT("%s\r\n", "Opening Internet session...");
bResult = OPEN_HTTP_SESSION();
if(bResult == 0)
{
PRINT("%s\r\n", "failed");
return;
}
}
string strStartTime = NUM2STR(nStartHour, "%02.0f") + ":"
+ NUM2STR(nStartMinute, "%02.0f");
string strEndTime = NUM2STR(nEndHour, "%02.0f") + ":"
+ NUM2STR(nEndMinute, "%02.0f");
double nStartTime = TIME_TO_REAL(strStartTime);
double nEndTime = TIME_TO_REAL(strEndTime);
string strTime = NUM2STR(nHour, "%02.0f") +
":" + NUM2STR(nMinute, "%02.0f");
double nTime = TIME_TO_REAL(strTime);
string strXmlSymbols = "";
string strDataExchangeFileName;
if(nStartTime <= nTime && nEndTime >= nTime)
{
strXmlBody = strXmlBody + "<stocks>";
DownloadSymbols("stocks_intra", arrStockNames,
strConnectStocks,
"Request,Date,Time,Open,High,Low,Close,Volume",
"data_stocks", ".stk");
strXmlBody = strXmlBody + strXmlSymbols;
strXmlBody = strXmlBody + "</stocks>\r\n\r\n";
}
else
{
PRINT("%s\r\n", "Stock market closed for a day");
}
strXmlBody = strXmlBody + "<forex>";
DownloadSymbols("forex_intra", arrForexNames, strConnectForex,
"Request,Date,Last,Bid,Ask", "data_forex", ".for");
strXmlBody = strXmlBody + strXmlSymbols;
strXmlBody = strXmlBody + "</forex>";
PRINT("%s\r\n\r\n", "Cycle completed");
CLOSE_HTTP_SESSION();
string strXmlPath =
"c:\\s_projects\\CortexPro\\data\\stock_dl\\images\\";
SAVE_XML(strXmlPath, "intraday", "intraday",
"root", strXmlBody);
SHOW_XML(strXmlPath + "intraday.xml");
// --------------------
nTimerCounter = nTimerCounter + 1;
}
void DownloadSymbols(string strType, array_s arrNames,
string strConnectSymbol, string strHeader,
string strDataExchangeFileName, string strExtention)
{
double bIsStock = 0;
if(STR_CMP(strType, "stocks_intra") == 0)
{
bIsStock = 1;
}
strXmlSymbols = "";
PRINT("Downloading %s information\r\n", strType);
string strExchangeFileName =
strDataPath + strDataExchangeFileName + ".tmp";
double hDataExchangeFile =
F_OPEN(strExchangeFileName, "w+b");
string strConnect;
string strFile;
string strFoundString;
string strRequestTime;
string strRequestDate;
string strSymbolFileName;
double bWriteHeader;
double hFile;
for(double i = 0; i < ARRAY_SIZE(arrNames); i = i + 1)
{
PRINT("%s...", arrNames[i]);
strConnect = strConnectSymbol;
STR_REPLACE(strConnect, "<symbol>", arrNames[i]);
strFile = GET_HTTP(strConnect, bResult);
strFoundString = STR_STR(strFile, "Proxy Error", 1);
if(STR_LEN(strFoundString) != 0)
{
PRINT("Unable to download file %s\r\n", strConnect);
continue i;
}
if(bResult == 0)
{
PRINT("Unable to download file %s\r\n", strConnect);
continue i;
}
arrDateInfo = TIME(nTimeDifference);
nDayOfWeek = arrDateInfo[0];
nYear = arrDateInfo[1];
nMonth = arrDateInfo[2];
nDay = arrDateInfo[3];
nHour = arrDateInfo[4];
nMinute = arrDateInfo[5];
nSecond = arrDateInfo[6];
strRequestTime = NUM2STR(nHour, "%02.0f") +
":" + NUM2STR(nMinute, "%02.0f");
strRequestDate = NUM2STR(nMonth, "%02.0f") +
"/" + NUM2STR(nDay, "%02.0f")
+ "/" + NUM2STR(nYear, "%-4.0f");
PRINT("%s\r\n", "done");
STR_REPLACE(strFile, "\"", "");
strSymbolFileName = strDataPath + strType +
"\\" + arrNames[i] + strExtention;
bWriteHeader = 1;
hFile = F_OPEN(strSymbolFileName, "r");
if(hFile != -1)
{
F_CLOSE(hFile);
bWriteHeader = 0;
}
hFile = F_OPEN(strSymbolFileName, "a+b");
if(bWriteHeader == 1)
{
F_PRINT(hFile, "%s\r\n", strHeader);
}
F_PRINT(hFile, "%s", strRequestTime, ",%s",
strRequestDate, ",%s", strFile);
F_CLOSE(hFile);
// This file can be used for data exchange between
// StockDownloader and other applications
F_PRINT(hDataExchangeFile, "%s", arrNames[i],
",%02.0f", nHour, ":%02.0f", nMinute,
",%02.0f", nMonth, "/%02.0f", nDay, "/%4.0f",
nYear, ",%s", strFile);
strXmlSymbols = strXmlSymbols + AssignArrays(arrNames[i],
strFile, strRequestTime, strRequestDate, bIsStock, i);
}
F_CLOSE(hDataExchangeFile);
}
string AssignArrays(string strSymbolName, string strFile,
string strRequestTime, string strRequestDate,
double bIsStock, double nSymbolNum)
{
string strXML = "";
string strDate;
string strLast;
string strOpen;
string strHigh;
string strLow;
string strPrice;
string strVolume;
string strBid;
string strPrice;
double hWrapper;
if(bIsStock == 1)
{
hWrapper = hStocksWrapper;
// Date,Time,Open,High,Low,Close,Volume
// "3/29/2001","1:31PM",89.25,95.49,89.18,94.68,2160600
strDate = GET_TOKEN(strFile, ",");
strLast = GET_TOKEN(strFile, ",");
strOpen = GET_TOKEN(strFile, ",");
strHigh = GET_TOKEN(strFile, ",");
strLow = GET_TOKEN(strFile, ",");
strPrice = GET_TOKEN(strFile, ",");
strVolume = GET_TOKEN(strFile, ",");
strXML = strXML + "<symbol>\r\n";
strXML = strXML + "\t<symbol>\r\n";
strXML = strXML + "\t\t" + strSymbolName + "\r\n";
strXML = strXML + "\t</symbol>\r\n";
strXML = strXML + "\t<request>\r\n";
strXML = strXML + "\t\t" + strRequestTime + "\r\n";
strXML = strXML + "\t</request>\r\n";
strXML = strXML + "\t<request_date>\r\n";
strXML = strXML + "\t\t" + strRequestDate + "\r\n";
strXML = strXML + "\t</request_date>\r\n";
strXML = strXML + "\t<date>\r\n";
strXML = strXML + "\t\t" + strDate + "\r\n";
strXML = strXML + "\t</date>\r\n";
strXML = strXML + "\t<last>\r\n";
strXML = strXML + "\t\t" + strLast + "\r\n";
strXML = strXML + "\t</last>\r\n";
strXML = strXML + "\t<open>\r\n";
strXML = strXML + "\t\t" + strOpen + "\r\n";
strXML = strXML + "\t</open>\r\n";
strXML = strXML + "\t<high>\r\n";
strXML = strXML + "\t\t" + strHigh + "\r\n";
strXML = strXML + "\t</high>\r\n";
strXML = strXML + "\t<low>\r\n";
strXML = strXML + "\t\t" + strLow + "\r\n";
strXML = strXML + "\t</low>\r\n";
strXML = strXML + "\t<close>\r\n";
strXML = strXML + "\t\t" + strPrice + "\r\n";
strXML = strXML + "\t</close>\r\n";
strXML = strXML + "\t<volume>\r\n";
strXML = strXML + "\t\t" + strVolume + "\r\n";
strXML = strXML + "\t</volume>\r\n";
}
else
{
hWrapper = hForexWrapper;
// Date,Last,Bid,Ask
// 20:35,10/7/2003,12:09pm,1.3139,1.3147
strDate = GET_TOKEN(strFile, ",");
strLast = GET_TOKEN(strFile, ",");
strBid = GET_TOKEN(strFile, ",");
strPrice = GET_TOKEN(strFile, ",");
strXML = strXML + "<symbol>\r\n";
strXML = strXML + "\t<symbol>\r\n";
strXML = strXML + "\t\t" + strSymbolName + "\r\n";
strXML = strXML + "\t</symbol>\r\n";
strXML = strXML + "\t<request>\r\n";
strXML = strXML + "\t\t" + strRequestTime + "\r\n";
strXML = strXML + "\t</request>\r\n";
strXML = strXML + "\t<request_date>\r\n";
strXML = strXML + "\t\t" + strRequestDate + "\r\n";
strXML = strXML + "\t</request_date>\r\n";
strXML = strXML + "\t<date>\r\n";
strXML = strXML + "\t\t" + strDate + "\r\n";
strXML = strXML + "\t</date>\r\n";
strXML = strXML + "\t<last>\r\n";
strXML = strXML + "\t\t" + strLast + "\r\n";
strXML = strXML + "\t</last>\r\n";
strXML = strXML + "\t<bid>\r\n";
strXML = strXML + "\t\t" + strBid + "\r\n";
strXML = strXML + "\t</bid>\r\n";
strXML = strXML + "\t<ask>\r\n";
strXML = strXML + "\t\t" + strPrice + "\r\n";
strXML = strXML + "\t</ask>\r\n";
}
WRAP_GET(hWrapper, arrTime, nSymbolNum * 3);
WRAP_GET(hWrapper, arrDate, nSymbolNum * 3 + 1);
WRAP_GET(hWrapper, arrClose, nSymbolNum * 3 + 2);
arrDate[ARRAY_SIZE(arrDate)] = DATE_TO_REAL(strRequestDate);
arrTime[ARRAY_SIZE(arrTime)] = TIME_TO_REAL(strRequestTime);
arrClose[ARRAY_SIZE(arrClose)] = STR2NUM(strPrice);
string strImagePath = strDataPath + "images\\";
double nMinutesInTheDay;
if(STR_CMP(strType, "forex_intra") == 0)
{
nMinutesInTheDay = 1439; // around a clock
nStartTime = 0;
}
else
{
// 9:46 - 16:00
nMinutesInTheDay = nEndHour * 60 + nEndMinute -
nStartHour * 60 - nStartMinute;
nStartTime = nStartHour * 60 + nStartMinute;
}
strXML = strXML + SAVE_CHART_INTRADAY(400, 200,
strImagePath + strSymbolName + ".png",
ARRAY_SIZE(arrDate), nMinutesInTheDay,
nStartTime, arrDate, arrTime, arrClose);
strXML = strXML + "</symbol>\r\n";
return strXML;
}
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