Add multiple prescriptions parsing.

Tests/Medication/PrescriptionTest.cs

@@ -44,5 +44,31 @@ namespace Tests.Medication
             Assert.AreEqual(noon, p.Noon, "Noon should be " + noon);
             Assert.AreEqual(evening, p.Evening, "Evening should be " + evening);
         }
+
+        [Test]
+        public void MultiplePrescriptions()
+        {
+            IEnumerable<Prescription> list = Prescription.ManyFromLine(
+                "Ramipril 5 mg 1-0-0    Prograf 1 mg 1-0-1");
+            Assert.AreEqual(2, list.Count());
+            Assert.AreEqual("Ramipril 5 mg\t1-0-0", list.First().ToString());
+            Assert.AreEqual("Prograf 1 mg\t1-0-1", list.Last().ToString());
+        }
+
+        [Test]
+        [TestCase("Ramipril 5 mg", "1", "0", "0", "0", "Ramipril 5 mg\t1-0-0-0")]
+        [TestCase("Ramipril 5 mg", "1", "0", "0", "", "Ramipril 5 mg\t1-0-0")]
+        [TestCase("Ramipril 5 mg", "1", "0", "", "", "Ramipril 5 mg\t1-0")]
+        [TestCase("Ramipril 5 mg", "1", "", "", "", "Ramipril 5 mg\t1")]
+        [TestCase("Ramipril 5 mg", "1", "", "0", "0", "Ramipril 5 mg\t1-0-0-0")]
+        [TestCase("Ramipril 5 mg", "1", "0", "", "0", "Ramipril 5 mg\t1-0-0-0")]
+        [TestCase("Ramipril 5 mg", "1", "", "", "0", "Ramipril 5 mg\t1-0-0-0")]
+        [TestCase("Ramipril 5 mg", "", "", "", "", "Ramipril 5 mg\t")]
+        public void PrescriptionToString(string drug, string morning, string noon,
+            string evening, string night, string formatted)
+        {
+            Prescription p = new Prescription(drug, morning, noon, evening, night);
+            Assert.AreEqual(formatted, p.ToString());
+        }
     }
 }

zaaReloaded2/Medication/Prescription.cs

@@ -53,6 +53,30 @@ namespace zaaReloaded2.Medication
                 );
         }
 
+        /// <summary>
+        /// Extracts several prescriptions from a given line.
+        /// </summary>
+        /// <param name="line">Line that contains several prescriptions.</param>
+        /// <returns>Enumerable with <see cref="Prescription"/>s.</returns>
+        public static IEnumerable<Prescription> ManyFromLine(string line)
+        {
+            MatchCollection mc = lineRegex.Matches(line);
+            List<Prescription> list = new List<Prescription>();
+            foreach (Match m in mc)
+            {
+                int n = m.Groups[DOSING_GROUP].Captures.Count;
+                list.Add(new Prescription(
+                    m.Groups["drug"].Value,
+                    n > 0 ? m.Groups[DOSING_GROUP].Captures[0].Value : String.Empty,
+                    n > 1 ? m.Groups[DOSING_GROUP].Captures[1].Value : String.Empty,
+                    n > 2 ? m.Groups[DOSING_GROUP].Captures[2].Value : String.Empty,
+                    n > 3 ? m.Groups[DOSING_GROUP].Captures[3].Value : String.Empty
+                    )
+                );
+            }
+            return list;
+        }
+
         #endregion
 
         #region Properties
@@ -69,6 +93,54 @@ namespace zaaReloaded2.Medication
 
         #endregion
 
+        #region Overrides
+
+        public override string ToString()
+        {
+            string s = Drug + "\t";
+            if (!String.IsNullOrEmpty(Morning))
+            {
+                s += Morning;
+            }
+            else
+            {
+                if (!(String.IsNullOrEmpty(Noon) && String.IsNullOrEmpty(Evening) &&
+                    String.IsNullOrEmpty(Night)))
+                {
+                    s += "0";
+                }
+            }
+            if (!String.IsNullOrEmpty(Noon))
+            {
+                s += "-" + Noon;
+            }
+            else
+            {
+                if (!(String.IsNullOrEmpty(Evening) && String.IsNullOrEmpty(Night)))
+                {
+                    s += "-0";
+                }
+            }
+            if (!String.IsNullOrEmpty(Evening))
+            {
+                s += "-" + Evening;
+            }
+            else
+            {
+                if (!String.IsNullOrEmpty(Night))
+                {
+                    s += "-0";
+                }
+            }
+            if (!String.IsNullOrEmpty(Night))
+            {
+                s += "-" + Night;
+            }
+            return s;
+        }
+
+        #endregion
+
         #region Constructor
 
         public Prescription() { }
@@ -76,11 +148,11 @@ namespace zaaReloaded2.Medication
         public Prescription(string drug, string morning, string noon,
             string evening, string night)
         {
-            Drug = drug;
+            Drug = drug.Trim();
-            Morning = morning;
+            Morning = morning.Trim();
-            Noon = noon;
+            Noon = noon.Trim();
-            Evening = evening;
+            Evening = evening.Trim();
-            Night = night;
+            Night = night.Trim();
         }
 
         #endregion
@@ -90,9 +162,12 @@ namespace zaaReloaded2.Medication
         private const string DOSING_GROUP = "dosing";
         private const string DOSING = @"(\d{1,3}((\s1)?/[234])?|[\u00bd\u2153\u00bc])";
         private const string SPACER = @"\s*[-\u2012\u2013\u2014]+\s*";
+
+        // Enclose entire regular expression in parentheses so we can use it
+        // to split a line and capture the delimiter.
         private static readonly Regex lineRegex = new Regex(
-            @"(?<drug>.+?)\s(?<dosing>" + DOSING + 
+            @"((?<drug>.+?)\s(?<dosing>" + DOSING + 
-            @")(\s?[-\u2012\u2013\u2014]+\s?(?<dosing>" + DOSING + @")){1,3}");
+            @")(\s?[-\u2012\u2013\u2014]+\s?(?<dosing>" + DOSING + @")){1,3})");
 
         #endregion
     }