Added "--sum" command line option.

Reads in a list of numbers on standard in, one per line, and sums them.

2 files changed, 20 insertions, 0 deletions

diff --git a/src/options.cpp b/src/options.cpp
index d9d34fa..d88df3b 100644
--- a/src/options.cpp
+++ b/src/options.cpp
@@ -8,6 +8,7 @@
 #include "lexer.h"

 #include "parser.h"

 

+#include <bu/streamstack.h>

 #include <bu/sio.h>

 #include <stdlib.h>

 

@@ -36,6 +37,8 @@ Options::Options( int argc, char *argv[] ) :
         "use all remaining parameters as the equation (you may wish to quote "

         "your equation to prevent special characters from being interpreted by "

         "your shell).");

+    addOption( Bu::slot(this, &Options::sum), "sum",

+        "Read numbers from standard input and sum them, output the result.");

     addOption( Bu::slot(this, &Options::version), 'v', "version",

         "Show the version string ('" CLIC_VERSION_STR "')");

     addHelpOption('h', "help", "This help");

@@ -198,6 +201,22 @@ int Options::execute( Bu::StringArray aArgs )
     return aArgs.getSize();

 }

 

+int Options::sum( Bu::StringArray aArgs )

+{

+    Number sum( iScale, iRadix );

+    while( !Bu::sioRaw.isEos() )

+    {

+        Bu::String s = Bu::sioRaw.readLine();

+        if( s.isEmpty() )

+            break;

+        Number n( s, iScale, iRadix );

+        sum = sum + n;

+    }

+    Bu::println("%1").arg( sum );

+    exit( 0 );

+    return 0;

+}

+

 int Options::version( Bu::StringArray aArgs )

 {

     Bu::println( CLIC_VERSION_STR );

diff --git a/src/options.h b/src/options.h
index 9afa0ac..f3f59a6 100644
--- a/src/options.h
+++ b/src/options.h
@@ -18,6 +18,7 @@ private:
     int isPrime( Bu::StringArray aArgs );

     int convert( Bu::StringArray aArgs );

     int execute( Bu::StringArray aArgs );

+    int sum( Bu::StringArray aArgs );

     int version( Bu::StringArray aArgs );

 

     int iScale;