268 lines
8.6 KiB
C#
Executable File
268 lines
8.6 KiB
C#
Executable File
/* Prescription.cs
|
|
* part of zaaReloaded2
|
|
*
|
|
* Copyright 2015 Daniel Kraus
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using System.Text.RegularExpressions;
|
|
|
|
namespace zaaReloaded2.Medication
|
|
{
|
|
/// <summary>
|
|
/// Represents a prescription
|
|
/// </summary>
|
|
public class Prescription
|
|
{
|
|
#region Static methods
|
|
|
|
/// <summary>
|
|
/// Determines whether a line contains prescriptions.
|
|
/// </summary>
|
|
/// <param name="line">Line to inspect.</param>
|
|
/// <returns>True if the line contains prescriptions.</returns>
|
|
public static bool IsCanonicalPrescriptionLine(string line)
|
|
{
|
|
return canonicalRegex.IsMatch(line);
|
|
}
|
|
|
|
public static bool IsPotentialPrescriptionLine(string line)
|
|
{
|
|
return alternativeRegex.IsMatch(line);
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Factory
|
|
|
|
/// <summary>
|
|
/// Creates a new Prescription object by parsing a line (e.g.,
|
|
/// from a physician's letter).
|
|
/// </summary>
|
|
/// <param name="line">Line to parse</param>
|
|
/// <returns>Prescription created from the <paramref name="Line"/></returns>
|
|
public static Prescription FromLine(string line)
|
|
{
|
|
// Replace any runs of whitespace with a single space
|
|
// (from http://stackoverflow.com/a/206946/270712)
|
|
// line = Regex.Replace(line, @"\s+", " ");
|
|
Match m = unifiedRegex.Match(line);
|
|
int n = m.Groups[DOSE_GROUP].Captures.Count;
|
|
|
|
return new Prescription(
|
|
spaceRegex.Replace(m.Groups["drug"].Value, " "),
|
|
n > 0 ? m.Groups[DOSE_GROUP].Captures[0].Value : String.Empty,
|
|
n > 1 ? m.Groups[DOSE_GROUP].Captures[1].Value : String.Empty,
|
|
n > 2 ? m.Groups[DOSE_GROUP].Captures[2].Value : String.Empty,
|
|
n > 3 ? m.Groups[DOSE_GROUP].Captures[3].Value : String.Empty,
|
|
m.Groups["comment"].Value
|
|
);
|
|
}
|
|
|
|
/// <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 IList<Prescription> ManyFromLine(string line)
|
|
{
|
|
// line = Regex.Replace(line, @"\s+", " ");
|
|
MatchCollection mc = unifiedRegex.Matches(line);
|
|
List<Prescription> list = new List<Prescription>();
|
|
foreach (Match m in mc)
|
|
{
|
|
int n = m.Groups[DOSE_GROUP].Captures.Count;
|
|
list.Add(new Prescription(
|
|
spaceRegex.Replace(m.Groups["drug"].Value, " "),
|
|
n > 0 ? m.Groups[DOSE_GROUP].Captures[0].Value : String.Empty,
|
|
n > 1 ? m.Groups[DOSE_GROUP].Captures[1].Value : String.Empty,
|
|
n > 2 ? m.Groups[DOSE_GROUP].Captures[2].Value : String.Empty,
|
|
n > 3 ? m.Groups[DOSE_GROUP].Captures[3].Value : String.Empty,
|
|
m.Groups["comment"].Value
|
|
)
|
|
);
|
|
}
|
|
return list;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Properties
|
|
|
|
public string Drug { get; set; }
|
|
|
|
public string Morning { get; set; }
|
|
|
|
public string Noon { get; set; }
|
|
|
|
public string Evening { get; set; }
|
|
|
|
public string Night { get; set; }
|
|
|
|
public string Comment { get; set; }
|
|
|
|
/// <summary>
|
|
/// Determines whether the drug is MMF or a derivative.
|
|
/// </summary>
|
|
public bool IsMmf
|
|
{
|
|
get
|
|
{
|
|
string d = Drug.ToLower();
|
|
return
|
|
d.StartsWith("mmf") ||
|
|
d.StartsWith("cellcept") ||
|
|
d.StartsWith("cell cept") ||
|
|
d.StartsWith("myfortic") ||
|
|
d.StartsWith("mycophenol");
|
|
}
|
|
}
|
|
|
|
#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;
|
|
}
|
|
if (!String.IsNullOrEmpty(Comment))
|
|
{
|
|
if (!s.EndsWith("\t"))
|
|
{
|
|
s += " ";
|
|
}
|
|
s += Comment;
|
|
}
|
|
return s;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Constructors
|
|
|
|
public Prescription() { }
|
|
|
|
public Prescription(string drug)
|
|
: this()
|
|
{
|
|
Drug = drug.Trim();
|
|
}
|
|
|
|
public Prescription(string drug, string morning, string noon,
|
|
string evening, string night)
|
|
: this(drug)
|
|
{
|
|
Morning = morning.Trim();
|
|
Noon = noon.Trim();
|
|
Evening = evening.Trim();
|
|
Night = night.Trim();
|
|
}
|
|
|
|
public Prescription(string drug, string morning, string noon,
|
|
string evening, string night, string comment)
|
|
: this(drug, morning, noon, evening, night)
|
|
{
|
|
Comment = comment.Trim();
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region Fields
|
|
|
|
private const string DOSE_GROUP = "dose";
|
|
private const string DOSE = @"(\d\s+1/[234]|(\d\s?)?[\u00bd\u2153\u00bc]|\d+)";
|
|
private const string SPACER = @"(\s*[-\u2012\u2013\u2014]+\s*)";
|
|
|
|
/// <summary>
|
|
/// The 'canonical' regex matches a prescription the form "Ramipril 5 mg 1-0-0"
|
|
/// with or without trailing comment.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// Enclose entire regular expression in parentheses so we can use it
|
|
/// with or without trailing comment.
|
|
/// </remarks>
|
|
private const string canonicalPattern =
|
|
@"((?<drug>[^\t]+)\s+" +
|
|
@"(?<dose>" + DOSE + @")" + SPACER +
|
|
@"(?<dose>" + DOSE + @")" + SPACER +
|
|
@"(?<dose>" + DOSE + @")" +
|
|
@"(" + SPACER + @"(?<dose>" + DOSE + @"))?" +
|
|
@"( +(?<comment>[^\t]+))?\s*)";
|
|
private static readonly Regex canonicalRegex = new Regex(canonicalPattern);
|
|
|
|
/// <summary>
|
|
/// The 'alternative' regex matches prescriptions that do not contain regular
|
|
/// dosing intervals ("1-0-0"), but free-style comments: "Cotrim forte alle 2 Tage".
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// Because this alternative pattern matches other lines as well (e.g. with
|
|
/// signature names), it requires special handling.
|
|
/// </remarks>
|
|
private const string alternativePattern =
|
|
@"((?<drug>[^\t]+)( +|\t+)(?<comment>[^\t]+))";
|
|
private static readonly Regex alternativeRegex = new Regex(alternativePattern);
|
|
|
|
private static readonly Regex unifiedRegex = new Regex(
|
|
"(" + canonicalPattern + "|" + alternativePattern + ")");
|
|
|
|
/// <summary>
|
|
/// A 'cached', reusable regex to match several whitespace characters.
|
|
/// </summary>
|
|
private static readonly Regex spaceRegex = new Regex(@"\s+");
|
|
|
|
#endregion
|
|
}
|
|
}
|