implemented command line args for source file + BCH

JI1RKALab · Jun 13, 2022 · 644e7e9 · 644e7e9
1 parent 584bb41
commit 644e7e9
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Showing 6 changed files with 90 additions and 50 deletions.
diff --git a/BCH.cs b/BCH.cs
diff --git a/BinaryCodedHeader.cs b/BinaryCodedHeader.cs
@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace net.sictransit.wefax
+{
+    //1- Satellite name(8 characters)          NOAA-11 
+    //2- Spectral band(3 characters)          DIR
+    //3- Date(YYMMDD)     (6 characters)          910125 
+    //4- Time(HHMM)       (4 characters)          1315 
+    //5- Sector name(4 Characters)          W020
+    //6- Open(25 characters)         non-standard info
+
+    class BinaryCodedHeader
+    {
+        private readonly string satelliteName;
+        private readonly string spectralBand;        
+        private readonly string sectorName;
+        private readonly string open;
+        private readonly string date;
+        private readonly string time;
+
+        public BinaryCodedHeader(string satelliteName, string spectralBand, string date, string time, string sectorName, string open)
+        {
+            this.satelliteName = TrimClipAndPad(satelliteName ?? string.Empty, 8);
+            this.spectralBand = TrimClipAndPad(spectralBand ?? string.Empty, 3);
+            this.date = TrimClipAndPad(date ?? string.Empty, 6);
+            this.time = TrimClipAndPad(time ?? string.Empty, 4);
+            this.sectorName = TrimClipAndPad(sectorName ?? string.Empty, 4);
+            this.open = TrimClipAndPad(open ?? string.Empty, 25);
+        }
+
+        public bool IsEmpty => string.IsNullOrWhiteSpace(Text);
+
+        private string TrimClipAndPad(string s, int length)
+        {
+            var trimmed = s.Trim();
+
+            return trimmed.Substring(0, Math.Min(trimmed.Length, length)).PadRight(length);
+        }
+
+        public string Text => string.Concat(satelliteName, spectralBand, date, time, sectorName, open);
+
+        public IEnumerable<int> Binary => Text.Select(c => Convert.ToString(c, 2).PadLeft(8, '0')).SelectMany(x => x).Select(c => c == '1' ? 1 : 0);
+    }
+}
diff --git a/Fax.cs b/Fax.cs
@@ -47,7 +47,7 @@ public float[] GetStop()
             return GetSquareWave(450, 5);
         }
 
-        public float[] GetBCH(BCH bch, bool debug = false)
+        public float[] GetBCH(BinaryCodedHeader bch, bool debug = false)
         {
             Log.Information($"encoding BCH: [{bch.Text}]");
 

diff --git a/Options.cs b/Options.cs
@@ -0,0 +1,28 @@
+using CommandLine;
+
+namespace net.sictransit.wefax
+{
+    public class Options
+    {
+        [Option(Required = false, Default = "img/EIA_Resolution_Chart_1956.png", HelpText = "source image file to fax")]
+        public string SourceImage { get; set; }
+
+        [Option(Required = false, HelpText = "[BCH] satellite name (8 chars, e.g. \"NOAA-11\")")]
+        public string SatelliteName { get; set; }
+
+        [Option(Required = false, HelpText = "[BCH] spectral band (3 chars, e.g. \"DIR\")")]
+        public string SpectralBane { get; set; }
+
+        [Option(Required = false, HelpText = "[BCH] date (6 chars, \"yyMMdd\")")]
+        public string Date { get; set; }
+
+        [Option(Required = false, HelpText = "[BCH] time (4 chars, \"hhmm\")")]
+        public string Time { get; set; }
+
+        [Option(Required = false, HelpText = "[BCH] sector name (4 chars, e.g. \"W020\")")]
+        public string SectorName { get; set; }
+
+        [Option(Required = false, HelpText = "[BCH] non-standard info (25 chars)")]
+        public string Open { get; set; }
+    }
+}
diff --git a/Program.cs b/Program.cs
@@ -1,4 +1,5 @@
-using NAudio.Wave;
+using CommandLine;
+using NAudio.Wave;
 using Serilog;
 using System;
 using System.Drawing;
@@ -16,10 +17,19 @@ static void Main(string[] args)
                 .WriteTo.Console()
                 .CreateLogger();
 
-            Send(@"img/EIA_Resolution_Chart_1956.png", new BCH("GC8WD6Q", "MST", DateTime.UtcNow, "JO89", "d: 1000 m, b: 90.00 deg"));
+            Parser.Default.ParseArguments<Options>(args)
+                  .WithParsed(o =>
+                  {
+                      if (!File.Exists(o.SourceImage))
+                      {
+                          throw new FileNotFoundException(o.SourceImage);
+                      }
+
+                      Send(o.SourceImage, new BinaryCodedHeader(o.SatelliteName, o.SectorName, o.Date, o.Time, o.SectorName, o.Open));
+                  });                      
         }
 
-        private static void Send(string filename, BCH bch = null)
+        private static void Send(string filename, BinaryCodedHeader bch)
         {
             var fax = new Fax(16000);
 
@@ -51,15 +61,11 @@ private static void Send(string filename, BCH bch = null)
 
             writer.WriteSamples(phasing, 0, phasing.Length);
 
-            if (bch != null)
+            if (!bch.IsEmpty)
             {
                 var header = fax.GetBCH(bch);
 
                 writer.WriteSamples(header, 0, header.Length);
-
-                //var debug = fax.GetBCH(bch, true);
-
-                //writer.WriteSamples(debug, 0, debug.Length);
             }
 
             for (int y = 0; y < scaled.Height; y++)

diff --git a/WeFax.csproj b/WeFax.csproj
@@ -7,6 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="CommandLineParser" Version="2.9.1" />
     <PackageReference Include="NAudio" Version="1.10.0" />
     <PackageReference Include="Serilog" Version="2.9.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="3.1.1" />