Anonymous user
Simple database: Difference between revisions
→{{header|C#}}
No edit summary |
|||
Line 368:
=={{header|C#}}==
<lang C sharp>
using System;
using System.IO;
namespace Simple_database
{
class Program
{
public static void Main(string[] args)
{
//
// For appropriate use of this program
// use standard Windows Command Processor or cmd.exe
//
// Create cmd.bat file at the same folder with executive version
// of program Simple_database.exe, so when started, the correct
// file path will be automatically set to cmd console.
//
// Start notepad, write only cmd.exe and save file as cmd.bat
//
// To start cmd just double click at cmd.bat file.
//
//
//
// Console application command line start command
//
// application name.exe [argument] [argument parameters]
//
//
// Command line argument followed by parameters
//
// [a] - Add new entry
//
// ["data1"]["data2"]["data3"]...["data n"]
//
// ["data1"] - Data category !
// ["data2"] - Data
// ["data3"] - Data
//
//
// NOTICE !
//
// First parameter is taken for data category.
//
//
//
// Command line argument with no parameters
//
// [p1] - Print the latest entry
//
// [p2] - Print the latest entry for each category
//
// [p3] - Print all entries sorted by a date
//
//
//
//
// Command line example
//
// Small_database.exe [a] ["home"] ["+398125465458"] ["My tel number"]
//
// Small_database.exe [a] ["office"] ["+398222789000"] ["Boss"]
//
// Small_database.exe [a] [cd] ["Action movie"] ["Movie title"]
// Small_database.exe [a] [cd] ["SF movie"] ["Movie title"]
// Small_database.exe [a] [dvd] ["Action movie"] ["Movie title"]
//
//
// NOTICE !
//
// Brackets and space between arguments and parameters are necessary.
// Quotes must be used when parameters have more than one word.
//
// If not used as shown in examples, program will show error message.
//
//
//
// Check command line for arguments
//
//
if(args.Length==0)
{
Console.WriteLine();
Console.WriteLine(" Missing Argument Error. ");
Console.WriteLine();
}
else
{
switch (args[0])
{
case "[a]" : Add_New_Entry(args);
break;
case "[p1]": Print_Document("Print the latest entry.txt");
break;
case "[p2]": Print_Document("Print the latest entry for each category.txt");
break;
case "[p3]": Print_Document("Print all entries sorted by a date.txt");
break;
default :
{
Console.WriteLine();
Console.WriteLine(" Incorrect Argument Error. ");
Console.WriteLine();
}
break;
}
}
}
static void Add_New_Entry(string [] args)
{
//
// Check parameters
//
bool parameters_ok = true;
foreach (string a in args)
{
if(!a.StartsWith("[") || !a.EndsWith("]"))
{
parameters_ok = !parameters_ok;
break;
}
}
//
// Add new entry to Data base document
//
if(parameters_ok)
{
//
//
//
Console.WriteLine();
Console.WriteLine(" Parameters are ok..... ");
Console.WriteLine();
Console.WriteLine(" Writing new entry to database..... ");
//
// Create new Data base entry
//
args[0] = string.Empty;
string line = string.Empty;
foreach (string a in args)
{
line+=a;
}
line+="[" + DateTime.Now.ToString() + "]";
args[0] = "[" + DateTime.Now.ToString() + "]";
//
// Write entry to Data base
//
StreamWriter w = new StreamWriter("Data base.txt",true);
w.WriteLine(line);
//
// Close and dispose stream writer
//
w.Close();
w.Dispose();
//
//
//
Console.WriteLine();
Console.WriteLine(" New entry is written to database. ");
Create_Print_Documents(args);
//
//
//
Console.WriteLine();
Console.WriteLine(" Add new entry command executed. ");
//
//
//
}
else
{
Console.WriteLine();
Console.WriteLine(" ! Parameters are not ok ! ");
Console.WriteLine();
Console.WriteLine(" Add new entry command is not executed. ");
Console.WriteLine();
}
}
static void Create_Print_Documents(string [] args)
{
//
//
//
Console.WriteLine();
Console.WriteLine(" Creating new print documents. ");
//
// Create "Print all entries sorted by a date.txt"
//
File.Copy("Data base.txt","Print all entries sorted by a date.txt",true);
//
//
//
Console.WriteLine();
Console.WriteLine(" Print all entries sorted by a date.txt created. ");
//
// Create "Print the latest entry.txt"
//
//
// Create new entry
//
string line = string.Empty;
foreach (string a in args)
{
line+=a;
}
//
StreamWriter w = new StreamWriter("Print the latest entry.txt");
//
w.WriteLine(line);
//
w.Close();
w.Dispose();
//
//
//
Console.WriteLine();
Console.WriteLine(" Print the latest entry.txt created. ");
//
// Create "Print the latest entry for each category.txt"
//
string latest_entry = string.Empty;
foreach (string a in args)
{
latest_entry+=a;
}
if(!File.Exists("Print the latest entry for each category.txt"))
{
File.WriteAllText("Print the latest entry for each category.txt",latest_entry);
}
else
{
StreamReader r = new StreamReader("Print the latest entry for each category.txt");
//
w = new StreamWriter("Print the latest entry for each category 1.txt",true);
//
line = string.Empty;
//
while(!r.EndOfStream)
{
line = r.ReadLine();
if(line.Contains(args[1].ToString()))
{
w.WriteLine(latest_entry);
latest_entry = "ok";
}
else
{
w.WriteLine(line);
}
}
// add new category
if(latest_entry != "ok")
w.WriteLine(latest_entry);
//
w.Close();
w.Dispose();
//
r.Close();
r.Dispose();
//
File.Copy("Print the latest entry for each category 1.txt",
"Print the latest entry for each category.txt",true);
//
File.Delete("Print the latest entry for each category 1.txt");
//
//
//
Console.WriteLine();
Console.WriteLine(" Print the latest entry for each category.txt created. ");
Console.WriteLine();
}
}
static void Print_Document(string file_name)
{
//
// Print document
//
Console.WriteLine();
Console.WriteLine(file_name.Replace(".txt","")+ " : ");
Console.WriteLine();
//
StreamReader r = new StreamReader(file_name);
//
string line = string.Empty;
//
line = r.ReadToEnd();
//
Console.WriteLine(line);
//
r.Close();
r.Dispose();
//
//
//
}
}
}
</lang>
=={{header|COBOL}}==
| |||