1 files changed, 86 insertions, 0 deletions

diff --git a/lib/fields.cc b/lib/fields.cc
new file mode 100644
index 0000000..d494098
--- a/dev/null
+++ b/lib/fields.cc
@@ -0,0 +1,86 @@
+#include <opkele/types.h>
+#include <opkele/exception.h>
+#include <opkele/util.h>
+
+namespace opkele {
+    using std::unary_function;
+
+    struct __om_copier : public unary_function<const string&,void> {
+        public:
+            const basic_fields& from;
+            basic_fields& to;
+
+            __om_copier(basic_fields& t,const basic_fields& f)
+                : from(f), to(t) { }
+
+            result_type operator()(argument_type f) {
+                to.set_field(f,from.get_field(f)); }
+    };
+
+    basic_fields::basic_fields(const basic_fields& x) {
+        x.copy_to(*this);
+    }
+    void basic_fields::copy_to(basic_fields& x) const {
+        x.reset_fields();
+        for_each(fields_begin(),fields_end(),
+                __om_copier(x,*this) );
+    }
+    void basic_fields::append_to(basic_fields& x) const {
+        for_each(fields_begin(),fields_end(),
+                __om_copier(x,*this) );
+    }
+
+    struct __om_query_builder : public unary_function<const string&,void> {
+        public:
+            const basic_fields& om;
+            bool first;
+            string& rv;
+            const char *pfx;
+
+            __om_query_builder(const char *p,string& r,const basic_fields& m)
+                : om(m), first(true), rv(r), pfx(p) {
+                    for_each(om.fields_begin(),om.fields_end(),*this);
+                }
+            __om_query_builder(const char *p,string& r,const basic_fields& m,const string& u)
+                : om(m), first(true), rv(r), pfx(p) {
+                    rv = u;
+                    if(rv.find('?')==string::npos)
+                        rv += '?';
+                    else
+                        first = false;
+                    for_each(om.fields_begin(),om.fields_end(),*this);
+                }
+
+            result_type operator()(argument_type f) {
+                if(first)
+                    first = false;
+                else
+                    rv += '&';
+                if(pfx) rv += pfx;
+                rv+= f;
+                rv += '=';
+                rv += util::url_encode(om.get_field(f));
+            }
+    };
+
+    string basic_fields::append_query(const string& url,const char *pfx) const {
+        string rv;
+        return __om_query_builder(pfx,rv,*this,url).rv;
+    }
+    string basic_fields::query_string(const char *pfx) const {
+        string rv;
+        return __om_query_builder(pfx,rv,*this).rv;
+    }
+
+    void basic_fields::reset_fields() {
+        throw not_implemented(OPKELE_CP_ "reset_fields() not implemented");
+    }
+    void basic_fields::set_field(const string&,const string&) {
+        throw not_implemented(OPKELE_CP_ "set_field() not implemented");
+    }
+    void basic_fields::reset_field(const string&) {
+        throw not_implemented(OPKELE_CP_ "reset_field() not implemented");
+    }
+
+
+}