Pdf Import Rewrite

Pdf Import rewritten to greatly improve QR Code detection, reduce reliance on iTextSharp and improve thumbnails. Fixes #50
2016-08-26 09:46:35 +10:00
parent 44f6d325db
commit 5ea9a814d6
98 changed files with 3168 additions and 3202 deletions
@@ -0,0 +1,111 @@
+using Disco.Data.Repository;
+using Disco.Models.Repository;
+using Disco.Models.Services.Documents;
+using Disco.Services.Expressions;
+using System;
+
+namespace Disco.Services
+{
+    public static class DocumentTemplateExpressionExtensions
+    {
+        internal const string CacheTemplate = "DocumentTemplate_{0}";
+
+        public static Expression FilterExpressionFromCache(this DocumentTemplate dt)
+        {
+            return ExpressionCache.GetValue("DocumentTemplate_FilterExpression", dt.Id, () => { return Expression.TokenizeSingleDynamic(null, dt.FilterExpression, 0); });
+        }
+
+        public static void FilterExpressionInvalidateCache(this DocumentTemplate dt)
+        {
+            ExpressionCache.InvalidateKey("DocumentTemplate_FilterExpression", dt.Id);
+        }
+
+        public static bool FilterExpressionMatches(this DocumentTemplate dt, object Data, DiscoDataContext Database, User User, System.DateTime TimeStamp, DocumentState State)
+        {
+            if (!string.IsNullOrEmpty(dt.FilterExpression))
+            {
+                Expression compiledExpression = dt.FilterExpressionFromCache();
+                System.Collections.IDictionary evaluatorVariables = Expression.StandardVariables(dt, Database, User, TimeStamp, State);
+                try
+                {
+                    object er = compiledExpression.EvaluateFirst<object>(Data, evaluatorVariables);
+                    if (er is bool)
+                    {
+                        return (bool)er;
+                    }
+                    bool erBool;
+                    if (bool.TryParse(er.ToString(), out erBool))
+                    {
+                        return erBool;
+                    }
+                }
+                catch
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        public static Expression OnImportAttachmentExpressionFromCache(this DocumentTemplate dt)
+        {
+            return ExpressionCache.GetValue("DocumentTemplate_OnImportExpression", dt.Id, () => { return Expression.TokenizeSingleDynamic(null, dt.OnImportAttachmentExpression, 0); });
+        }
+
+        public static void OnImportAttachmentExpressionInvalidateCache(this DocumentTemplate dt)
+        {
+            ExpressionCache.InvalidateKey("DocumentTemplate_OnImportExpression", dt.Id);
+        }
+
+        public static string EvaluateOnAttachmentImportExpression(this DocumentTemplate dt, object Data, DiscoDataContext Database, User User, DateTime TimeStamp)
+        {
+            if (!string.IsNullOrEmpty(dt.OnImportAttachmentExpression))
+            {
+                Expression compiledExpression = dt.OnImportAttachmentExpressionFromCache();
+                System.Collections.IDictionary evaluatorVariables = Expression.StandardVariables(dt, Database, User, TimeStamp, null);
+                try
+                {
+                    object result = compiledExpression.EvaluateFirst<object>(Data, evaluatorVariables);
+                    if (result == null)
+                        return null;
+                    else
+                        return result.ToString();
+                }
+                catch
+                {
+                    throw;
+                }
+            }
+            return null;
+        }
+
+        public static Expression OnGenerateExpressionFromCache(this DocumentTemplate dt)
+        {
+            return ExpressionCache.GetValue("DocumentTemplate_OnGenerateExpression", dt.Id, () => { return Expression.TokenizeSingleDynamic(null, dt.OnGenerateExpression, 0); });
+        }
+
+        public static void OnGenerateExpressionInvalidateCache(this DocumentTemplate dt)
+        {
+            ExpressionCache.InvalidateKey("DocumentTemplate_OnGenerateExpression", dt.Id);
+        }
+
+        public static string EvaluateOnGenerateExpression(this DocumentTemplate dt, object Data, DiscoDataContext Database, User User, DateTime TimeStamp, DocumentState State)
+        {
+            if (!string.IsNullOrEmpty(dt.OnGenerateExpression))
+            {
+                Expression compiledExpression = dt.OnGenerateExpressionFromCache();
+                System.Collections.IDictionary evaluatorVariables = Expression.StandardVariables(dt, Database, User, TimeStamp, State);
+                try
+                {
+                    object result = compiledExpression.EvaluateFirst<object>(Data, evaluatorVariables);
+                    return result.ToString();
+                }
+                catch
+                {
+                    throw;
+                }
+            }
+            return null;
+        }
+    }
+}