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refactoring Pdf generation

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This commit is contained in:
Paul Schneider 2016-11-30 11:01:22 +01:00
commit 94ddffd5b2
3 changed files with 102 additions and 80 deletions
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4
Yavsc/ApiControllers/PdfEstimateController.cs
View file

@ -79,13 +79,13 @@ namespace Yavsc.ApiControllers
public IActionResult GetTex(long id)
{
Response.ContentType = "text/x-tex";
return ViewComponent("Estimate",new object[] { id, false });
return ViewComponent("Estimate",new object[] { id, "LaTeX" });
}
[HttpPost("gen/{id}")]
public IActionResult GeneratePdf(long id)
{
return ViewComponent("Estimate",new object[] { id, true } );
return ViewComponent("Estimate",new object[] { id, "Pdf" } );
}
}
}

60
Yavsc/Helpers/TeXHelpers.cs
View file

@ -1,19 +1,24 @@
using System;
using System.Diagnostics;
using System.IO;
using System.Linq;
using Microsoft.AspNet.Http;
using Microsoft.AspNet.Mvc;
using Microsoft.AspNet.Mvc.Rendering;
using Microsoft.AspNet.Mvc.ViewEngines;
using Yavsc.ViewModels.Gen;
namespace Yavsc.Helpers
{
public class TeXString {
public class TeXString
{
public class Replacement {
public class Replacement
{
string target;
string replacement;
public Replacement(string target, string replacement){
public Replacement(string target, string replacement)
{
this.target = target;
this.replacement = replacement;
}
@ -49,9 +54,11 @@ namespace Yavsc.Helpers
new Replacement("–","\\textendash")
};
string data;
public TeXString(string str) {
public TeXString(string str)
{
data = str;
foreach (var r in SpecialCharsRendering) {
foreach (var r in SpecialCharsRendering)
{
data = r.Execute(data);
}
}
@ -76,6 +83,49 @@ namespace Yavsc.Helpers
if (target == null) return null;
return new TeXString(target.NewLinesWith(lineSeparator));
}
public static bool GenerateEstimatePdf(this PdfGenerationViewModel Model)
{
string errorMsg = null;
var billdir = Model.DestDir;
var tempdir = Startup.SiteSetup.TempDir;
string name = Model.BaseFileName;
string fullname = new FileInfo(
System.IO.Path.Combine(tempdir, name)).FullName;
string ofullname = new FileInfo(
System.IO.Path.Combine(billdir, name)).FullName;
FileInfo fi = new FileInfo(fullname + ".tex");
FileInfo fo = new FileInfo(ofullname + ".pdf");
using (StreamWriter sw = new StreamWriter(fi.FullName))
{
sw.Write(Model.TeXSource);
}
if (!fi.Exists)
{
errorMsg = "Source write failed";
}
else
{
using (Process p = new Process())
{
p.StartInfo.WorkingDirectory = tempdir;
p.StartInfo = new ProcessStartInfo();
p.StartInfo.UseShellExecute = false;
p.StartInfo.FileName = "/usr/bin/texi2pdf";
p.StartInfo.Arguments = $"--batch --build-dir=. -o {fo.FullName} {fi.FullName}";
p.Start();
p.WaitForExit();
if (p.ExitCode != 0)
{
errorMsg = $"Pdf generation failed with exit code: {p.ExitCode}";
}
}
fi.Delete();
}
Model.Generated = fo.Exists;
Model.GenerationErrorMessage = new HtmlString(errorMsg);
return fo.Exists;
}
public static string RenderViewToString(
this Controller controller, IViewEngine engine,

50
Yavsc/Views/Shared/Components/Estimate/Estimate_pdf.cshtml
View file

@ -4,47 +4,19 @@
@using System.Diagnostics
@using System.Text
@using Yavsc.Formatters
@using Yavsc.Helpers
@model Yavsc.ViewModels.Gen.PdfGenerationViewModel
@{
string errorMsg = null;
var billdir = Model.DestDir;
var tempdir = Startup.SiteSetup.TempDir;
string name = Model.BaseFileName;
string fullname = new FileInfo(
System.IO.Path.Combine(tempdir,name)).FullName;
string ofullname = new FileInfo(
System.IO.Path.Combine(billdir,name)).FullName;
FileInfo fi = new FileInfo(fullname + ".tex");
FileInfo fo = new FileInfo(ofullname + ".pdf");
using (StreamWriter sw = new StreamWriter (fi.FullName))
{
sw.Write (Model.TeXSource);
@{
Model.GenerateEstimatePdf();
}
if (!fi.Exists)
{
errorMsg = "Source write failed";
}
else {
using (Process p = new Process ()) {
p.StartInfo.WorkingDirectory = tempdir;
p.StartInfo = new ProcessStartInfo ();
p.StartInfo.UseShellExecute = false;
p.StartInfo.FileName = "/usr/bin/texi2pdf";
p.StartInfo.Arguments = $"--batch --build-dir=. -o {fo.FullName} {fi.FullName}";
p.Start ();
p.WaitForExit ();
if (p.ExitCode != 0) {
errorMsg = $"Pdf generation failed with exit code: {p.ExitCode}";
}
}
fi.Delete();
}
ViewBag.GenSuccess = fo.Exists;
}
@if (ViewBag.GenSuccess) {
@($"{name}.pdf")
@if (Model.Generated) {
<div>
@(Model.BaseFileName).pdf was generated
</div>
} else {
@errorMsg
<text>Something went wrong ...</text>
<div class="error">
@Model.GenerationErrorMessage
<p>Something went wrong ...</p>
</div>
}