Just in time processing on a character stream: Difference between revisions

Content added Content deleted

Inline

@@ Line 11: / Line 11: @@
 This task was inspired by the movie "[[wp:National_Treasure_%28film%29|National Treasure]]" with refers to a "[[wp:Book cipher|book cipher]]".
+=={{header|C++}}==
+Text used to encode:[http://paulo-jorente.de/text/theRaven.txt The Raven - by E.A.Poe]
+<lang cpp>
+#include <vector>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+typedef struct {
+    int s[4];
+}userI;
+class jit{
+public:
+    void decode( std::string& file, std::vector<userI>& ui ) {
+        std::ifstream f( file.c_str(), std::ios_base::in );
+        fileBuffer = std::string( ( std::istreambuf_iterator<char>( f ) ), std::istreambuf_iterator<char>() );
+        f.close();
+        for( std::vector<userI>::iterator t = ui.begin(); t != ui.end(); t++ ) {
+            if( !decode( ( *t ).s ) ) break;
+        }
+        std::cout << "\n\n";
+    }
+private:
+    bool decode( int* ui ) {
+        int l = 0, t = 0, p = 0, c = 0, a = 0;
+        for( std::string::iterator i = fileBuffer.begin(); i != fileBuffer.end(); i++ ) {
+            if( p == ui[0] && l == ui[1] && t == ui[2] && c == ui[3] ) {
+                if( *i == '!' )  return false;
+                std::cout << *i; return true;
+            }
+            if( *i == '\n' )      { l++; t = c = 0; }
+            else if( *i == '\t' ) { t++; c = 0; }
+            else if( *i == '\f' ) { p++; l = t = c = 0; }
+            else                  { c++;}
+        }
+        return false;
+    }
+    std::string fileBuffer;
+};
+void getUserInput( std::vector<userI>& u ) {
+    std::string h = "0 18 0 0 0 68 0 1 0 100 0 32 0 114 0 45 0 38 0 26 0 16 0 21 0 17 0 59 0 11 "
+                    "0 29 0 102 0 0 0 10 0 50 0 39 0 42 0 33 0 50 0 46 0 54 0 76 0 47 0 84 2 28";
+    //std::getline( std::cin, h );
+    std::stringstream ss( h );
+    userI a;
+    int x = 0;
+    while( std::getline( ss, h, ' ' ) ) {
+        a.s[x] = atoi( h.c_str() );
+        if( ++x == 4 ) {
+            u.push_back( a );
+            x = 0;
+        }
+    }
+}
+int main( int argc, char* argv[] ) {
+    std::vector<userI> ui;
+    getUserInput( ui );
+    jit j;
+    j.decode( std::string( "theRaven.txt" ), ui );
+    return 0;
+}
+</lang>
+{{out}}
+<pre>
+Silence-Dogood.
+</pre>
 =={{header|REXX}}==