笔记要点：
1。个人工具包samsTools 工具之一PromptMessage,方法：
pause():Console 下暂停命令；
showMessage:MS MessageBox/MessageBoxW 之D改写；
char askForChar(string msg=" ")从控制台读取用户输入并返回一字符串；
T askFor!(T)(string msg=" ") 从控制台读取用户输入并返回指定T类型值
1Console嵌套菜单的制作；
2。数据库OO数据类Sales；
3。std.stream顺序文件和随机文件读写操作。
PromptMessage.d:
module samsTools.PromptMessage;
import std.c.windows.windows;
import std.stdio;
import std.string;
import std.conv;
enum MsgboxBtn
{
OK = 0x00000000,
OKCancel = 0x00000001,
AbortRetryIgnore = 0x00000002,
YesNoCancel = 0x00000003,
YesNo = 0x00000004,
RetryCancel = 0x00000005,
Default1 = 0x00000000,
Default2 = 0x00000100,
Default3 = 0x00000200,
Default4 = 0x00000300
}
enum MsgboxIcon
{
Hand = 0x00000010,
Question = 0x00000020,
Exclamation = 0x00000030,
Asterisk = 0x00000040,
//MB_USERICON = 0x00000080,
Warning = MB_ICONEXCLAMATION,
Error = MB_ICONHAND,
Information = MB_ICONASTERISK,
Stop = MB_ICONHAND
}
enum MagboxDefaultButton
{
Default1 = 0x00000000,
Default2 = 0x00000100,
Default3 = 0x00000200,
Default4 = 0x00000300
}
enum Misc
{
MB_APPLMODAL = 0x00000000,
MB_SYSTEMMODAL = 0x00001000,
MB_TASKMODAL = 0x00002000,
MB_HELP = 0x00004000, // Help Button
MB_NOFOCUS = 0x00008000,
MB_SETFOREGROUND = 0x00010000,
MB_DEFAULT_DESKTOP_ONLY = 0x00020000,
MB_TOPMOST = 0x00040000,
MB_RIGHT = 0x00080000,
MB_RTLREADING = 0x00100000,
MB_TYPEMASK = 0x0000000F,
MB_ICONMASK = 0x000000F0,
MB_DEFMASK = 0x00000F00,
MB_MODEMASK = 0x00003000,
MB_MISCMASK = 0x0000C000
}
extern(Windows){int MessageBoxW(HWND,LPCWSTR,LPCWSTR,UINT);}
int ShowMessage(in wstring msg,in wstring caption=r"Application",
int style=MB_OK|MB_ICONINFORMATION)
{
return MessageBoxW(null,(msg~"\000").ptr,(caption~"\000").ptr,style);
}
alias ShowMessage showMessage;
void pause(string msg=r"Press any key to continue...")
{
writefln("\n\n*******************************************************");
writefln("* %s *",msg);
writefln("*******************************************************");
char[] input;
readln(input);
}
char askForChar(string msg="")
{
string str="Please enter a char:";
write(msg.length==0?str:msg);
char[] input;
readln(input);
char[] output=chomp(input);
return (output.length>0)?output[0]:'0';
}
T askFor(T)(string msg="")
{
static if(is(typeof(T[])==char[])
||is(typeof(T[])==wchar[])
||is(typeof(T[])==dchar[])
||is(T==string))
{
string str="a string:";
}
/*
else static if(is(typeof(T)==char)
||is(typeof(T)==wchar)
||is(typeof(T)==dchar))
{
string str="a char:";
return to!(T)[0];
}
*/
else static if(is(T==int))
string str="Pleaes enter an integer:";
else static if(is(T==float))
string str="Pleaes enter a floating point number:";
else static if(is(T==double))
string str="Pleaes enter a double precision point number:";
else static if(is(T==ushort)||is(T==short))
string str="Pleaes enter a short integer:";
else static if(is(T==ulong)||is(T==long))
string str="Pleaes enter a very very long integer:";
else
{
//Stdout.format("Please enter a number:").flush:
string str="Pleaes enter a number or string:";
}
write(msg.length==0?str:msg);
//Stdout.format("Please enter {}:",str).flush;
try
{
char[] input;
readln(input);
return to!(T)(chomp(input));
}
catch(Exception msg)
{
//Stdout("Invalid input").newline;
writefln("Invalid input");
// return T.init;
assert(0);
}
//assert(0);
}
ledgerSys.d:
module ledgerSys;
import std.stdio;
import std.string;
import std.conv;
import std.file;
import std.stream;
import samsTools.PromptMessage;
class Company
{
private:
string companyName,
companyOwner,
companyAddress,
companyCity,
companyState,
companyZip;
public:
string CompanyName()
{
return companyName;
}
string CompanyName(string companyName)
{
return this.companyName=companyName;
}
string CompanyOwner()
{
return companyOwner;
}
string CompanyOwner(string companyOwner)
{
return this.companyOwner=companyOwner;
}
string CompanyAddress()
{
return companyAddress;
}
string CompanyAddress(string companyAddress)
{
return this.companyAddress=companyAddress;
}
string CompanyCity()
{
return companyCity;
}
string CompanyCity(string companyCity)
{
return this.companyCity=companyCity;
}
string CompanyState()
{
return companyState;
}
string CompanyState(string companyState)
{
return this.companyState=companyState;
}
string CompanyZip()
{
return companyZip;
}
string CompanyZip(string companyZip)
{
return this.companyZip=companyZip;
}
public:
void inputName()
{
CompanyName=askFor!(string)("What's your company's name?");
}
string outputName()
{
return CompanyName;
}
void inputOwner()
{
CompanyOwner=askFor!(string)("Who is the company's owner? ");
}
void inputAddress()
{
CompanyAddress=askFor!(string)("What's the company's address? ");
}
void inputCity()
{
CompanyCity=askFor!(string)("What's the company's city? ");
}
void inputState()
{
CompanyState=askFor!(string)("What's the company's state? ");
}
void inputZip()
{
CompanyZip=askFor!(string)("What's the company's zip? ");
}
string CompanyInfo()
{
string info= "Company: "~CompanyName~"\n"
~"Owner: "~CompanyOwner~"\n"
~"Address: "~CompanyAddress~"\n"
~"City: "~CompanyCity~"\n"
~"State: "~CompanyState~"\n"
~"Zip: "~CompanyZip~"\n";
return info;
}
void outputCompanyInfo()
{
writefln(CompanyInfo);
}
string toString()
{
return CompanyInfo;
}
}
class CDate
{
private:
int month;
int day;
int year;
public:
this()
{
this(1,1,1000);
}
this(int month,int day,int year)
{
Month=month;
Day=day;
Year=year;
}
int Month()
{
return month;
}
int Month(int month)
{
return this.month=month;
}
int Day()
{
return day;
}
int Day(int day)
{
return this.day=day;
}
int Year()
{
return year;
}
int Year(int year)
{
return this.year=year;
}
public:
void inputMonth()
{
month=askFor!(int)("What's the month? ");
}
void inputDay()
{
day=askFor!(int)("What's the day? ");
}
void inputYear()
{
year=askFor!(int)("What's the year? ");
}
int outputMonth()
{
return Month;
}
int outputDay()
{
return Day;
}
int outputYear()
{
return Year;
}
string dateInfo()
{
string strMonth=month<10?"0"~to!string(month):to!string(month);
string strDay=day<10?"0"~to!string(day):to!string(day);
string strYear=year<10?"200"~to!string(year):year<100?"20"~to!string(year):to!string(year);
return strMonth~"/"~strDay~"/"~strYear;
}
string toString()
{
return dateInfo;
}
ref CDate parse(string strDate)
{
string[] result=split(strDate,"/");
this.month=to!(int)(result[0]);
this.day=to!(int)(result[1]);
this.year=to!(int)(result[2]);
return this;
}
}
class Sales:CDate
{
public static const string lineSep=" ,";
private:
float[5] dailySales;
float getDailySales()
{
char[] input;
readln(input);
return to!(float)(chomp(input));
}
public:
this()
{
super();
}
void inputSalesAmounts()
{
for(int gl=3;gl<=7;++gl)
{
char resp;
char ch;
char[] input;
do
{
writef("What's the sales for GL #%d?",gl);
readln(input);
dailySales[gl-3]=to!(float)(chomp(input));
write("Correct?(Y/N) ");
readln(input);
resp=chomp(input)[0];
}while((resp!='Y') && (resp!='y'));
}
}
void modifySalesAmount(int number)
{
writefln("The current for GL account #%d is:%f",
number,dailySales[number]);
write("What shoud the amount be? ");
dailySales[number]=getDailySales;
}
void showSalesAmounts()
{
float ttl_sales=0.00;
for(int gl=3;gl<=7;++gl)
{
float amout=dailySales[gl-3];
writefln("\nSales GL #%d :%10.2f",
gl,amout);
ttl_sales+=amout;
}
writeln("--------------------------------------");
writefln("Total Sales %10.2f",ttl_sales);
}
float showSalesAmount(int number)
{
return dailySales[number];
}
float[] DailySales()
{
return dailySales;
}
float[] DailySales(float[] dailySales)
{
return this.dailySales=dailySales;
}
string toString()
{
string result="";
result~=super.toString;
foreach(amount;dailySales)
result~=lineSep~std.string.format("%10.2f",amount/*to!string(amount*/);
return result;
}
}
void mainMenu()
{
char menu_1='0';
do
{
menu_1='0';
clr_scrn;
char[] input;
write(" Main Menu\n"
" 1. Start New Client\n"
" 2. Expense Ledger Menu\n"
" 3. Sales Ledger Menu\n"
" 4. Print P&L\n"
" 5. End of Year Processing\n"
" 6. Exit\n"
" which? ");
readln(input);
menu_1=chomp(input)[0];
clr_scrn;
switch(menu_1)
{
case '1':
startClient;
menu_1='0';
break;
case '2':
menu_1='0';
break;
case '3':
salesLedger;
menu_1='0';
break;
case '4':
menu_1='0';
break;
case '5':
menu_1='0';
break;
case '6':
menu_1='6';
break;
default:
menu_1='0';
break;
}
}while(menu_1=='0');
}
void clr_scrn()
{
for(int i=0;i<25;++i)
writeln("\n");
}
void salesLedger()
{
char menu_3='0';
char[] input;
do
{
menu_3=0;
clr_scrn;
write( " Sales Ledger Menu\n"
" 1. Enter Sales\n"
" 2. Change Sales\n"
" 3. Print Sales\n"
" 4. End of Month Processing for Sales\n"
" 5. Return to Main Menu\n"
" which? ");
readln(input);
menu_3=chomp(input)[0];
switch(menu_3)
{
case '1':
inputSales;
menu_3='0';
break;
case '2':
editSales;
menu_3='0';
break;
case '3':
printSales;
menu_3='0';
break;
case '4':
eomSales;
menu_3='0';
break;
case '5':
menu_3='5';
break;
default:
menu_3='0';
break;
}
}while(menu_3=='0');
}
void inputSales()
{
char resp=' ';
clr_scrn;
Sales today=new Sales;
std.stream.File outfile=new std.stream.File;
outfile.open("SALES.DAT",FileMode.In|FileMode.Out|FileMode.Append);
do
{
clr_scrn;
today.inputDay;
today.inputMonth;
today.inputYear;
today.inputSalesAmounts;
outfile.writeLine(today.toString);
write("Enter another day?(Y/N) ");
resp=' ';
char[] input;
readln(input);
resp=chomp(input)[0];
}while(resp=='Y'||resp=='y');
outfile.close;
}
void printSales()
{
std.stream.File output=new std.stream.File;
output.open("SALES.DAT",FileMode.In);
while(! output.eof)
{
string sofarRead=cast(string)output.readLine;
string[] contents=split(sofarRead,Sales.lineSep);
Sales sales=new Sales;
sales.parse(contents[0]);
float[] theDailySales;
for(int i=1;i<contents.length;++i)
theDailySales~= to!(float)(strip(contents[i]));
sales.DailySales=theDailySales;
writeln(sales.toString);
}
output.close;
}
void editSales()
{
version(Windows)
{
int caretLength="\b\n".length;
}
else
{
int caretLength="\n".length;
}
Sales today=new Sales;
ulong last_record;
long post;
clr_scrn;
int record_number;
std.stream.File output=new std.stream.File;
output.open("SALES.DAT",FileMode.Out|FileMode.In);
if(!output.readable) writefln("The file is unreadable");
if(!output.writeable) writefln("The file is unwriteable");
if(!output.seekable) writefln("The file is unseekable");
if(!output.isOpen) writefln("The file is not open.");
if(!output.eof) writefln("The file is not at EOF.");
output.seekSet(0);
int bytes_per_line=output.readLine.length+caretLength;
writefln("The length of each line is %d bytes.",bytes_per_line);
ulong end_position=output.seekEnd(0);
last_record=end_position/bytes_per_line;
writefln("The length of the file is %d bytes.",end_position);
writefln("Total records:%d",last_record);
if(last_record==0)
{
writefln("No records.");
return ;
}
char resp=' ';
do
{
do
{
record_number=askFor!(int)("Which record do you want to see?");
if(record_number>last_record||record_number<1)
writefln("Beyond end of data.Pick another record.");
}while( record_number>last_record || record_number<1);
clr_scrn;
writefln("You want to see record #%d",record_number);
post=(record_number-1)* bytes_per_line;
writefln("Current position:%d",output.position);
output.seekSet(post);
writefln("Current position:%d",output.position);
writefln(output.readLine);
writefln("Now will replace with new record:");
Sales newday=new Sales;
newday.inputDay;
newday.inputMonth;
newday.inputYear;
newday.inputSalesAmounts;
output.seekSet(post);
output.writeLine(newday.toString);
writefln("Current position:%d",output.position);
writefln("Record changed.");
resp=askForChar("Do you want to edit another record? (Y/N)");
clr_scrn;
}while(resp=='y'||resp=='Y');
output.close;
}
void eomSales()
{
}
void startClient()
{
}
testcase.d //main module
module testcase;
import ledgerSys;
import std.stdio;
import std.stream;
import samsTools.PromptMessage;
void testCompany()
{
Company IBM=new Company;
IBM.CompanyName="IBM";
IBM.CompanyOwner="Liu Chuanzhi";
IBM.CompanyAddress="Beijing,China";
IBM.CompanyCity="Beijing";
IBM.CompanyState="P.R.China";
IBM.CompanyZip="100082";
IBM.outputCompanyInfo;
IBM.CompanyCity=askFor!(string)("What's your favorite city then?");
IBM.CompanyState=askFor!(string)("What's your company State? ");
writeln(IBM);
IBM.inputAddress;
writeln(IBM);
}
void testDate()
{
CDate today=new CDate;
writeln(today);
today.Month=7;
today.Day=9;
today.Year=2009;
writeln(today);
Sales sales=new Sales;
sales.Day=today.Day;
sales.Month=today.Month;
sales.Year=today.Year;
sales.inputSalesAmounts;
writeln(sales);
}
void testParseDate()
{
CDate temp=new CDate;
temp.parse("07/09/2009");
writeln(temp);
writefln("Month=%d;Day=%d;Year=%d",temp.Month,temp.Day,temp.Year);
}
void testRecord()
{
version(Windows)
{
int caretLength="\b\n".length;
}
else
{
int caretLength="\n".length;
}
Sales today=new Sales;
ulong last_record;
long post;
int record_number;
std.stream.File output=new std.stream.File;
output.open("SALES.DAT",FileMode.Out|FileMode.In);
if(!output.readable) writefln("The file is unreadable");
if(!output.writeable) writefln("The file is unwriteable");
if(!output.seekable) writefln("The file is unseekable");
if(!output.isOpen) writefln("The file is not open.");
if(!output.eof) writefln("The file is not at EOF.");
output.seekSet(0);
int bytes_per_line=output.readLine.length+caretLength;
writefln("The length of each line is %d bytes.",bytes_per_line);
ulong end_position=output.seekEnd(0);
last_record=end_position/bytes_per_line;
writefln("The length of the file is %d bytes.",end_position);
writefln("Total records:%d",last_record);
if(last_record==0)
{
writefln("No records.");
return ;
}
char resp=' ';
do
{
do
{
record_number=askFor!(int)("Which record do you want to see?");
if(record_number>last_record||record_number<1)
writefln("Beyond end of data.Pick another record.");
}while( record_number>last_record || record_number<1);
writefln("You want to see record #%d",record_number);
post=(record_number-1)* bytes_per_line;
writefln("Current position:%d",output.position);
output.seekSet(post);
writefln("Current position:%d",output.position);
writefln(output.readLine);
writefln("Now will replace with new record:");
Sales newday=new Sales;
newday.inputDay;
newday.inputMonth;
newday.inputYear;
newday.inputSalesAmounts;
output.seekSet(post);
output.writeLine(newday.toString);
writefln("Current position:%d",output.position);
resp=askForChar("Do you want to edit another record? (Y/N)");
}while(resp=='y'||resp=='Y');
output.close;
writefln("All Done.");
}
void testinput()
{
double input=askFor!(double);
writefln("OK");
char ch=askForChar("Continue?(N/Y)");
writefln("OK");
writefln("%d","\b\n".length);
}
int main(string[] args)
{
mainMenu;
pause;
return 0;
}
数据文件SALES.DAT样板：
07/13/2009 , 0.50 , 0.33 , 89.45 , 0.99 , 0.70
07/02/2009 , 2345.67 , 12345.67 , 90.50 , 100.00 , 890.00
07/09/2009 , 123.55 , 1234.77 , 1908.00 , 345.99 , 1123.45
07/04/2009 , 234.56 , 98.09 , 4567.89 , 20000.00 , 234.00
07/05/2009 , 345.05 , 34.50 , 1234.56 , 23456.78 , 34.90
07/12/2009 , 2345.67 , 8976.00 , 98.00 , 987.50 , 34.00