[Boost-commit] svn:boost r43580 - sandbox/SOC/2007/cgi/branches/acceptor_work/libs/cgi/example/acgi/amortization

From: lists.drrngrvy_at_[hidden]
Date: 2008-03-12 13:43:11

Author: drrngrvy
Date: 2008-03-12 13:43:11 EDT (Wed, 12 Mar 2008)
New Revision: 43580
URL: http://svn.boost.org/trac/boost/changeset/43580

Log:
Cleaning up example a bit.
Text files modified: 
   sandbox/SOC/2007/cgi/branches/acceptor_work/libs/cgi/example/acgi/amortization/main.cpp |   118 +++++++++++++++++++-------------------- 
   1 files changed, 57 insertions(+), 61 deletions(-)

Modified: sandbox/SOC/2007/cgi/branches/acceptor_work/libs/cgi/example/acgi/amortization/main.cpp
==============================================================================
--- sandbox/SOC/2007/cgi/branches/acceptor_work/libs/cgi/example/acgi/amortization/main.cpp	(original)
+++ sandbox/SOC/2007/cgi/branches/acceptor_work/libs/cgi/example/acgi/amortization/main.cpp	2008-03-12 13:43:11 EDT (Wed, 12 Mar 2008)
@@ -1,6 +1,5 @@
 #include <iostream>
 #include <boost/cgi/acgi.hpp>
-#include <boost/algorithm/string/trim.hpp>
 #include <boost/algorithm/string/regex.hpp>
 #include <google/template.h>
 
@@ -8,21 +7,14 @@
 
 std::string string_from_currency(std::string amt)
 {
-  using namespace boost::algorithm;
-  
-  erase_all_regex(amt, boost::regex("[$, ]")); // this is much too hardcore...
+  // this is much too hardcore...
+  boost::algorithm::erase_all_regex(amt, boost::regex("[$, ]"));
   return amt;
 }
 
-
-int main()
+template<typename Request>
+void fill_amortization_dictionary(google::TemplateDictionary& dict, Request& req)
 {
-  service s;
-  request req(s);
-  req.load(true);
-  response resp;
-
-  google::TemplateDictionary dict("example");
   if (req.POST("LoanAmt").empty())
     dict.SetValue("LoanAmt", "$250,000");
   else
@@ -45,65 +37,69 @@
     dict.ShowSection("NotAmortize");
   else
   {
-    try {
-      double P = boost::lexical_cast<double>(string_from_currency(req.POST("LoanAmt")));
-      double i = boost::lexical_cast<double>(boost::algorithm::trim_copy(req.POST("YearlyIntRate"))) / 1200;
-      double n = boost::lexical_cast<double>(req.POST("TermYrs")) * 12;
-
-      //resp<< "P = " << P << ", i = " << i << ", n = " << n << ", ";
-      double monthly_payments = (P*i) / (1 - std::pow((1+i), -n));
-
-      //resp<< monthly_payments;
-      
-      google::TemplateDictionary* sub_dict = dict.AddSectionDictionary("RegPmtSummary");
-      sub_dict->ShowSection("RegPmtSummary");
-      sub_dict->SetFormattedValue("MonthlyPmt", "%.2f", monthly_payments);
-
-      dict.ShowSection("Amortize");
-
-      double balance = P;
-      int row_num = 0;
-      double interest;
-      double principal_paid;
-      double total_interest;
-      do{
-        google::TemplateDictionary* sub_dict2 = dict.AddSectionDictionary("PaymentEntry");
-        sub_dict2->ShowSection("PaymentEntry");
-        sub_dict2->SetFormattedValue("Payment", "%.2f", monthly_payments);
-        sub_dict2->SetIntValue("ROW_NUM", ++row_num);
-        sub_dict2->SetIntValue("ROW_TYPE", (row_num % 2) + 1);
-        interest = balance * i;
-        total_interest += interest;
-        sub_dict2->SetFormattedValue("InterestPaid", "%.2f", interest);
-
-        principal_paid = monthly_payments - interest;
-        sub_dict2->SetFormattedValue("PrincipalPaid", "%.2f", principal_paid);
-        balance -= principal_paid; // Note: balance can increase.
-        sub_dict2->SetFormattedValue("Balance", "%.2f", balance);
-
-      }while(balance > 0);
-
-      sub_dict->SetFormattedValue("RegPmt_TotalIntPd", "%.2f", total_interest);
-      sub_dict->SetFormattedValue("RegPmt_TotalPmts", "%.2f", total_interest + P);
-
-    }catch(boost::bad_lexical_cast& blc)
-    {
-      std::cout<< "Bad lexical_cast: " << blc.what() << std::endl;
-      return 0;
-    }
+    double P = boost::lexical_cast<double>(string_from_currency(req.POST("LoanAmt")));
+    double i = boost::lexical_cast<double>(req.POST("YearlyIntRate")) / 1200;
+    double n = boost::lexical_cast<double>(req.POST("TermYrs")) * 12;
+    double monthly_payments = (P*i) / (1 - std::pow((1+i), -n));
+    
+    google::TemplateDictionary* sub_dict = dict.AddSectionDictionary("RegPmtSummary");
+    sub_dict->ShowSection("RegPmtSummary");
+    sub_dict->SetFormattedValue("MonthlyPmt", "%.2f", monthly_payments);
+
+    dict.ShowSection("Amortize");
+
+    double balance = P;
+    int row_num = 0;
+    double interest;
+    double principal_paid;
+    double total_interest;
+    do{
+      google::TemplateDictionary* sub_dict2 = dict.AddSectionDictionary("PaymentEntry");
+      sub_dict2->ShowSection("PaymentEntry");
+      sub_dict2->SetFormattedValue("Payment", "%.2f", monthly_payments);
+      sub_dict2->SetIntValue("ROW_NUM", ++row_num);
+      sub_dict2->SetIntValue("ROW_TYPE", (row_num % 2) + 1);
+      interest = balance * i;
+      total_interest += interest;
+      sub_dict2->SetFormattedValue("InterestPaid", "%.2f", interest);
+      principal_paid = monthly_payments - interest;
+      sub_dict2->SetFormattedValue("PrincipalPaid", "%.2f", principal_paid);
+      balance -= principal_paid; // Note: balance can increase.
+      sub_dict2->SetFormattedValue("Balance", "%.2f", balance);
 
+    }while(balance > 0);
+
+    sub_dict->SetFormattedValue("RegPmt_TotalIntPd", "%.2f", total_interest);
+    sub_dict->SetFormattedValue("RegPmt_TotalPmts", "%.2f", total_interest + P);
   }
+}
 
-  google::Template* tmpl = google::Template::GetTemplate("example.tpl", google::STRIP_WHITESPACE);
+template<typename Request>
+void write_amortization_template(Request& req, response& resp)
+{
+  google::TemplateDictionary dict("amortization");
+
+  fill_amortization_dictionary(dict, req);
+
+  google::Template* tmpl
+    = google::Template::GetTemplate("example.tpl", google::STRIP_WHITESPACE);
 
   std::string output;
   tmpl->Expand(&output, &dict);
   
   resp<< content_type("text/html")
       << output;
+}
 
-  resp.send(req.client());
+int main()
+{
+  service s;
+  request req(s);
+  req.load(true);
+  response resp;
 
-  return 0;
+  write_amortization_template(req, resp);
+  
+  return_(resp, req, 0);
 }