support performance profiling information in console runner

tools/UglyToad.PdfPig.ConsoleRunner/Program.cs

@@ -1,5 +1,10 @@
 using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+using System.Globalization;
 using System.IO;
+using System.Linq;
 using System.Text;
 using Console = System.Console;
 
@@ -7,6 +12,113 @@ namespace UglyToad.PdfPig.ConsoleRunner
 {
     public static class Program
     {
+        private class OptionalArg
+        {
+            public required string ShortSymbol { get; init; }
+
+            public required string Symbol { get; init; }
+
+            public required bool SupportsValue { get; init; }
+
+            public string? Value { get; set; }
+        }
+
+        private class ParsedArgs
+        {
+            public required IReadOnlyList<OptionalArg> SuppliedArgs { get; init; }
+
+            public required string SuppliedDirectoryPath { get; init; }
+        }
+
+        private static IReadOnlyList<OptionalArg> GetSupportedArgs() =>
+        [
+            new OptionalArg
+            {
+                SupportsValue = false,
+                ShortSymbol = "nr",
+                Symbol = "no-recursion"
+            },
+            new OptionalArg
+            {
+                SupportsValue = true,
+                ShortSymbol = "o",
+                Symbol = "output"
+            },
+            new OptionalArg
+            {
+                SupportsValue = true,
+                ShortSymbol = "l",
+                Symbol = "limit"
+            }
+        ];
+
+        private static bool TryParseArgs(
+            string[] args,
+            [NotNullWhen(true)] out ParsedArgs? parsed)
+        {
+            parsed = null;
+            string? path = null;
+            var suppliedOpts = new List<OptionalArg>();
+
+            var opts = GetSupportedArgs();
+
+            for (var i = 0; i < args.Length; i++)
+            {
+                var str = args[i];
+
+                var isOptFlag = str.StartsWith('-');
+
+                if (!isOptFlag)
+                {
+                    if (path == null)
+                    {
+                        path = str;
+                    }
+                    else
+                    {
+                        return false;
+                    }
+                }
+                else
+                {
+                    var item = opts.SingleOrDefault(x =>
+                        string.Equals("-" + x.ShortSymbol, str, StringComparison.OrdinalIgnoreCase)
+                        || string.Equals("--" + x.Symbol, str, StringComparison.OrdinalIgnoreCase));
+
+                    if (item == null)
+                    {
+                        return false;
+                    }
+
+                    if (item.SupportsValue)
+                    {
+                        if (i == args.Length - 1)
+                        {
+                            return false;
+                        }
+
+                        i++;
+                        item.Value = args[i];
+                    }
+
+                    suppliedOpts.Add(item);
+                }
+            }
+
+            if (path == null)
+            {
+                return false;
+            }
+
+            parsed = new ParsedArgs
+            {
+                SuppliedArgs = suppliedOpts,
+                SuppliedDirectoryPath = path
+            };
+
+            return true;
+        }
+
         public static int Main(string[] args)
         {
             if (args.Length == 0)
@@ -15,30 +127,47 @@ namespace UglyToad.PdfPig.ConsoleRunner
                 return 7;
             }
 
-            var path = args[0];
-
-            if (!Directory.Exists(path))
+            if (!TryParseArgs(args, out var parsed))
             {
-                Console.WriteLine($"The provided path is not a valid directory: {path}.");
+                var strJoined = string.Join(" ", args);
+                Console.WriteLine($"Unrecognized arguments passed: {strJoined}");
                 return 7;
             }
 
-            var maxCount = default(int?);
-
-            if (args.Length > 1 && int.TryParse(args[1], out var countIn))
+            if (!Directory.Exists(parsed.SuppliedDirectoryPath))
             {
-                maxCount = countIn;
+                Console.WriteLine($"The provided path is not a valid directory: {parsed.SuppliedDirectoryPath}.");
+                return 7;
             }
 
+            int? maxCount = null;
+            var limit = parsed.SuppliedArgs.SingleOrDefault(x => x.ShortSymbol == "l");
+            if (limit?.Value != null && int.TryParse(limit.Value, CultureInfo.InvariantCulture, out var maxCountArg))
+            {
+                Console.WriteLine($"Limiting input files to first: {maxCountArg}");
+                maxCount = maxCountArg;
+            }
+            
+            var noRecursionMode = parsed.SuppliedArgs.Any(x => x.ShortSymbol == "nr");
+            var outputOpt = parsed.SuppliedArgs.SingleOrDefault(x => x.ShortSymbol == "o" && x.Value != null);
+
             var hasError = false;
             var errorBuilder = new StringBuilder();
-            var fileList = Directory.GetFiles(path, "*.pdf", SearchOption.AllDirectories);
+            var fileList = Directory.GetFiles(
+                    parsed.SuppliedDirectoryPath,
+                    "*.pdf",
+                    noRecursionMode ? SearchOption.TopDirectoryOnly : SearchOption.AllDirectories)
+                .OrderBy(x => x).ToList();
             var runningCount = 0;
 
-            Console.WriteLine($"Found {fileList.Length} files.");
+            Console.WriteLine($"Found {fileList.Count} files.");
+            Console.WriteLine();
 
-            Console.WriteLine($"{GetCleanFilename("File")}| Size\t| Words\t| Pages");
+            PrintTableColumns("File", "Size", "Words", "Pages", "Open cost (μs)", "Total cost (μs)", "Page cost (μs)");
 
+            var dataList = new List<DataRecord>();
+
+            var sw = new Stopwatch();
             foreach (var file in fileList)
             {
                 if (maxCount.HasValue && runningCount >= maxCount)
@@ -50,8 +179,20 @@ namespace UglyToad.PdfPig.ConsoleRunner
                 {
                     var numWords = 0;
                     var numPages = 0;
+                    long openMicros;
+                    long totalPageMicros;
+
+                    sw.Reset();
+                    sw.Start();
+
                     using (var pdfDocument = PdfDocument.Open(file))
                     {
+                        sw.Stop();
+
+                        openMicros = sw.Elapsed.Microseconds;
+
+                        sw.Start();
+
                         foreach (var page in pdfDocument.GetPages())
                         {
                             numPages++;
@@ -63,13 +204,36 @@ namespace UglyToad.PdfPig.ConsoleRunner
                                 }
                             }
                         }
+
+                        sw.Stop();
+                        totalPageMicros = sw.Elapsed.Microseconds;
                     }
 
                     var filename = Path.GetFileName(file);
 
                     var size = new FileInfo(file);
 
-                    Console.WriteLine($"{GetCleanFilename(filename)}| {size.Length}\t| {numWords}\t| {numPages}");
+                    var item = new DataRecord
+                    {
+                        FileName = filename,
+                        OpenCostMicros = openMicros,
+                        Pages = numPages,
+                        Size = size.Length,
+                        Words = numWords,
+                        TotalCostMicros = totalPageMicros + openMicros,
+                        PerPageMicros = Math.Round(totalPageMicros / (double)Math.Max(numPages, 1), 2)
+                    };
+
+                    dataList.Add(item);
+
+                    PrintTableColumns(
+                        item.FileName,
+                        item.Size,
+                        item.Words,
+                        item.Pages,
+                        item.OpenCostMicros,
+                        item.TotalCostMicros,
+                        item.PerPageMicros);
                 }
                 catch (Exception ex)
                 {
@@ -88,12 +252,71 @@ namespace UglyToad.PdfPig.ConsoleRunner
                 return 5;
             }
 
+            if (outputOpt != null && outputOpt.Value != null)
+            {
+                WriteOutput(outputOpt.Value, dataList);
+            }
+
             Console.WriteLine("Complete! :)");
 
             return 0;
         }
 
-        private static string GetCleanFilename(string name, int maxLength = 30)
+        private static void WriteOutput(string outPath, IReadOnlyList<DataRecord> records)
+        {
+            using var fs = File.OpenWrite(outPath);
+            using var sw = new StreamWriter(fs);
+
+            sw.WriteLine("File,Size,Words,Pages,Open Cost,Total Cost,Per Page");
+            foreach (var record in records)
+            {
+                var sizeStr = record.Size.ToString("D", CultureInfo.InvariantCulture);
+                var wordsStr = record.Words.ToString("D", CultureInfo.InvariantCulture);
+                var pagesStr = record.Pages.ToString("D", CultureInfo.InvariantCulture);
+                var openCostStr = record.OpenCostMicros.ToString("D", CultureInfo.InvariantCulture);
+                var totalCostStr = record.TotalCostMicros.ToString("D", CultureInfo.InvariantCulture);
+                var ppcStr = record.PerPageMicros.ToString("F2", CultureInfo.InvariantCulture);
+
+                var numericPartsStr = string.Join(",",
+                [
+                    sizeStr,
+                    wordsStr,
+                    pagesStr,
+                    openCostStr,
+                    totalCostStr,
+                    ppcStr
+                ]);
+                
+                sw.WriteLine($"\"{record.FileName}\",{numericPartsStr}");
+            }
+
+            sw.Flush();
+        }
+
+        private static void PrintTableColumns(params object[] values)
+        {
+            for (var i = 0; i < values.Length; i++)
+            {
+                var value = values[i];
+                var valueStr = value.ToString();
+
+                var cleaned = GetCleanStr(valueStr ?? string.Empty);
+
+                var padChars = 16 - cleaned.Length;
+
+                var padding = padChars > 0 ? new string(' ', padChars) : string.Empty;
+
+                var padded = cleaned + padding;
+
+                Console.Write("| ");
+
+                Console.Write(padded);
+            }
+
+            Console.WriteLine();
+        }
+
+        private static string GetCleanStr(string name, int maxLength = 16)
         {
             if (name.Length <= maxLength)
             {
@@ -105,4 +328,21 @@ namespace UglyToad.PdfPig.ConsoleRunner
             return name.Substring(0, maxLength);
         }
     }
+
+    internal class DataRecord
+    {
+        public required string FileName { get; init; }
+
+        public required long Size { get; init; }
+
+        public required int Words { get; init; }
+
+        public required int Pages { get; init; }
+
+        public required long OpenCostMicros { get; init; }
+
+        public required long TotalCostMicros { get; init; }
+
+        public required double PerPageMicros { get; init; }
+    }
 }

tools/UglyToad.PdfPig.ConsoleRunner/Properties/launchSettings.json

@@ -1,8 +1,8 @@
 {
   "profiles": {
     "UglyToad.PdfPig.ConsoleRunner": {
-      "commandName": "Project",
-      "commandLineArgs": "\"C:\\temp\\pdfs\\archive\""
+        "commandName": "Project",
+        "commandLineArgs": "\"C:\\temp\\pdfs\\archive\""
     }
   }
 }

tools/UglyToad.PdfPig.ConsoleRunner/UglyToad.PdfPig.ConsoleRunner.csproj

@@ -4,6 +4,7 @@
     <LangVersion>latest</LangVersion>
     <OutputType>Exe</OutputType>
     <TargetFramework>net8</TargetFramework>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>