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Demo for LoadFromURL for TMemoryStream

michael 5 years ago
parent
commit
e52ab39d2b

BIN
demo/rtl/bytes.txt


+ 19 - 0
demo/rtl/demoloadstreamfromurl.html

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+<!doctype html>
+<html lang="en">
+<head>
+  <meta http-equiv="Content-type" content="text/html; charset=utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>scratch</title>
+  <script src="demoloadstreamfromurl.js"></script>
+</head>
+<body>
+  <h1>Demo loading file from URL to stream</h1>
+  <div id="pasjsconsole">
+  </div>
+  <script>
+  rtl.run();
+
+  </script>
+  
+</body>
+</html>

+ 88 - 0
demo/rtl/demoloadstreamfromurl.lpi

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+<?xml version="1.0" encoding="UTF-8"?>
+<CONFIG>
+  <ProjectOptions>
+    <Version Value="12"/>
+    <General>
+      <Flags>
+        <MainUnitHasCreateFormStatements Value="False"/>
+        <MainUnitHasTitleStatement Value="False"/>
+        <MainUnitHasScaledStatement Value="False"/>
+        <Runnable Value="False"/>
+      </Flags>
+      <SessionStorage Value="InProjectDir"/>
+      <Title Value="demoloadstreamfromurl"/>
+      <UseAppBundle Value="False"/>
+      <ResourceType Value="res"/>
+    </General>
+    <CustomData Count="2">
+      <Item0 Name="MaintainHTML" Value="1"/>
+      <Item1 Name="PasJSWebBrowserProject" Value="1"/>
+    </CustomData>
+    <BuildModes>
+      <Item Name="Default" Default="True"/>
+    </BuildModes>
+    <PublishOptions>
+      <Version Value="2"/>
+      <UseFileFilters Value="True"/>
+    </PublishOptions>
+    <RunParams>
+      <FormatVersion Value="2"/>
+    </RunParams>
+    <Units>
+      <Unit>
+        <Filename Value="demoloadstreamfromurl.lpr"/>
+        <IsPartOfProject Value="True"/>
+      </Unit>
+      <Unit>
+        <Filename Value="demoloadstreamfromurl.html"/>
+        <IsPartOfProject Value="True"/>
+        <CustomData Count="1">
+          <Item0 Name="PasJSIsProjectHTMLFile" Value="1"/>
+        </CustomData>
+      </Unit>
+    </Units>
+  </ProjectOptions>
+  <CompilerOptions>
+    <Version Value="11"/>
+    <Target FileExt=".js">
+      <Filename Value="demoloadstreamfromurl"/>
+    </Target>
+    <SearchPaths>
+      <IncludeFiles Value="$(ProjOutDir)"/>
+      <UnitOutputDirectory Value="js"/>
+    </SearchPaths>
+    <Parsing>
+      <SyntaxOptions>
+        <AllowLabel Value="False"/>
+        <CPPInline Value="False"/>
+        <UseAnsiStrings Value="False"/>
+      </SyntaxOptions>
+    </Parsing>
+    <CodeGeneration>
+      <TargetOS Value="browser"/>
+    </CodeGeneration>
+    <Linking>
+      <Debugging>
+        <GenerateDebugInfo Value="False"/>
+        <UseLineInfoUnit Value="False"/>
+      </Debugging>
+    </Linking>
+    <Other>
+      <CustomOptions Value="-Jeutf-8 -Jirtl.js -Jc -Jminclude"/>
+      <CompilerPath Value="$(pas2js)"/>
+    </Other>
+  </CompilerOptions>
+  <Debugging>
+    <Exceptions>
+      <Item>
+        <Name Value="EAbort"/>
+      </Item>
+      <Item>
+        <Name Value="ECodetoolError"/>
+      </Item>
+      <Item>
+        <Name Value="EFOpenError"/>
+      </Item>
+    </Exceptions>
+  </Debugging>
+</CONFIG>

+ 47 - 0
demo/rtl/demoloadstreamfromurl.lpr

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+program demoloadstreamfromurl;
+
+{$mode objfpc}
+
+uses
+  browserconsole, Classes;
+
+Var
+  SS : TStringStream;
+
+begin
+  Writeln('Loading synchronously');
+  SS:=TStringStream.Create('');
+  try
+    SS.LoadFromFile('bytes.txt');
+    Writeln('Loaded : ',SS.DataString);
+  finally
+    SS.Free;
+  end;
+  Writeln('Loading asynchronously');
+  SS:=TStringStream.Create('');
+  try
+    SS.LoadFromURL('bytes.txt',False,procedure(Sender: tobject)
+    begin
+    Writeln('Loaded 2: ',SS.DataString);
+    end
+    )
+  finally
+    SS.Free;
+  end;
+  Writeln('Loading non-existing file');
+  SS:=TStringStream.Create('');
+  try
+    SS.LoadFromURL('bytesnonexist.txt',False,procedure(Sender: tobject)
+    begin
+    Writeln('Loaded 3: ',SS.DataString);
+    end
+    ,
+    procedure(Sender: tobject; Const aError : string)
+    begin
+    Writeln('Load error: ',aError);
+    end
+    )
+  finally
+    SS.Free;
+  end;
+end.