summaryrefslogtreecommitdiff
path: root/platform/winrt/gsview/ghostsharp.cs
diff options
context:
space:
mode:
Diffstat (limited to 'platform/winrt/gsview/ghostsharp.cs')
-rw-r--r--platform/winrt/gsview/ghostsharp.cs1165
1 files changed, 0 insertions, 1165 deletions
diff --git a/platform/winrt/gsview/ghostsharp.cs b/platform/winrt/gsview/ghostsharp.cs
deleted file mode 100644
index 168ce476..00000000
--- a/platform/winrt/gsview/ghostsharp.cs
+++ /dev/null
@@ -1,1165 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading;
-//using System.Threading.Tasks;
-using System.Runtime.InteropServices;
-using System.IO;
-using System.Security;
-using System.ComponentModel;
-
-namespace gsview
-{
- /* Warning. This list is in a particular order. The devices before
- * psdrgb do not support multiple pages. Those including psdrgb do
- * support multiple pages. This is used in the conversion process.
- * Also note that mupdf devices go at the beginning of the list */
- public enum gsDevice_t
- {
- svg,
- pnm,
- pclbitmap,
- pwg,
- bmp16, /* Add mupdf devices before this one */
- bmp16m,
- bmp256,
- bmp32b,
- bmpgray,
- bmpmono,
- eps2write,
- jpeg,
- jpegcmyk,
- jpeggray,
- pamcmyk32,
- pamcmyk4,
- pbm,
- pgm,
- png16,
- png16m,
- png256,
- pngalpha,
- pnggray,
- pngmono,
- psdcmyk,
- psdrgb, /* Add single page gs devices before this device */
- pdfwrite,
- ps2write,
- pxlcolor,
- pxlmono,
- tiff12nc,
- tiff24nc,
- tiff32nc,
- tiff64nc,
- tiffcrle,
- tiffg3,
- tiffg32d,
- tiffg4,
- tiffgray,
- tifflzw,
- tiffpack,
- tiffsep,
- txtwrite,
- xpswrite
- };
-
- public enum GS_Task_t
- {
- PS_DISTILL,
- CREATE_XPS,
- SAVE_RESULT
- }
-
- public enum GS_Result_t
- {
- gsOK,
- gsFAILED,
- gsCANCELLED
- }
-
- /* Parameters */
- public struct gsParams_t
- {
- public String init_string;
- public String init_file;
- public int resolution;
- public gsDevice_t device;
- public String devicename;
- public String outputfile;
- public String inputfile;
- public GS_Task_t task;
- public GS_Result_t result;
- public int num_pages;
- public String options;
- public bool need_multi_page;
- public System.Collections.IList pages;
- public int firstpage;
- public int lastpage;
- public int currpage; /* valid only when pages != null */
- };
-
- public class gsEventArgs : EventArgs
- {
- private bool m_completed;
- private int m_progress;
- private gsParams_t m_param;
-
- public bool Completed
- {
- get { return m_completed; }
- }
-
- public gsParams_t Params
- {
- get { return m_param; }
- }
-
- public int Progress
- {
- get { return m_progress; }
- }
-
- public gsEventArgs(bool completed, int progress, gsParams_t param)
- {
- m_completed = completed;
- m_progress = progress;
- m_param = param;
- }
- }
-
- /* from gs */
- public struct gsapi_revision_t
- {
- public IntPtr product;
- public IntPtr copyright;
- public int revision;
- public int revisiondate;
- }
-
- public enum gsEncoding {
- GS_ARG_ENCODING_LOCAL = 0,
- GS_ARG_ENCODING_UTF8 = 1,
- GS_ARG_ENCODING_UTF16LE = 2
- };
-
- public enum gsStatus
- {
- GS_READY,
- GS_BUSY,
- GS_ERROR
- };
-
- static class gsConstants
- {
- public const int E_QUIT = -101;
- public const int GS_READ_BUFFER = 32768;
- }
-
- [SuppressUnmanagedCodeSecurity]
- class ghostsharp
- {
- /* Callback proto for stdio */
- public delegate int gsStdIOHandler(IntPtr caller_handle, IntPtr buffer,
- int len);
-
- #region DLLInterface
- /* Ghostscript API */
- [DllImport("gsdll64.dll", EntryPoint = "gsapi_revision", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_revision64(ref gsapi_revision_t vers, int size);
-
- [DllImport("gsdll64.dll", EntryPoint="gsapi_new_instance", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_new_instance64(out IntPtr pinstance,
- IntPtr caller_handle);
-
- [DllImport("gsdll64.dll", EntryPoint = "gsapi_delete_instance", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern void gsapi_delete_instance64(IntPtr instance);
-
- [DllImport("gsdll64.dll", EntryPoint = "gsapi_init_with_args", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_init_with_args64(IntPtr instance, int argc,
- IntPtr argv);
-
- [DllImport("gsdll64.dll", EntryPoint = "gsapi_exit", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_exit64(IntPtr instance);
-
- [DllImport("gsdll64.dll", EntryPoint = "gsapi_set_arg_encoding", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_set_arg_encoding64(IntPtr instance,
- int encoding);
-
- [DllImport("gsdll64.dll", EntryPoint = "gsapi_set_stdio", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_set_stdio64(IntPtr instance,
- gsStdIOHandler stdin, gsStdIOHandler stdout, gsStdIOHandler stderr);
-
- [DllImport("gsdll64.dll", EntryPoint = "gsapi_run_string_begin", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern void gsapi_run_string_begin64(IntPtr instance,
- int usererr, ref int exitcode);
-
- [DllImport("gsdll64.dll", EntryPoint = "gsapi_run_string_continue", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern void gsapi_run_string_continue64(IntPtr instance,
- IntPtr command, int count, int usererr, ref int exitcode);
-
- [DllImport("gsdll64.dll", EntryPoint = "gsapi_run_string_end", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern void gsapi_run_string_end64(IntPtr instance,
- int usererr, ref int exitcode);
-
- /* 32 Bit DLL */
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_revision", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_revision32(ref gsapi_revision_t vers, int size);
-
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_new_instance", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_new_instance32(out IntPtr pinstance,
- IntPtr caller_handle);
-
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_delete_instance", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern void gsapi_delete_instance32(IntPtr instance);
-
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_init_with_args", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_init_with_args32(IntPtr instance, int argc,
- IntPtr argv);
-
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_exit", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_exit32(IntPtr instance);
-
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_set_arg_encoding", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_set_arg_encoding32(IntPtr instance,
- int encoding);
-
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_set_stdio", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern int gsapi_set_stdio32(IntPtr instance,
- gsStdIOHandler stdin, gsStdIOHandler stdout, gsStdIOHandler stderr);
-
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_run_string_begin", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern void gsapi_run_string_begin32(IntPtr instance,
- int usererr, ref int exitcode);
-
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_run_string_continue", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern void gsapi_run_string_continue32(IntPtr instance,
- IntPtr command, int count, int usererr, ref int exitcode);
-
- [DllImport("gsdll32.dll", EntryPoint = "gsapi_run_string_end", CharSet = CharSet.Ansi,
- CallingConvention = CallingConvention.StdCall)]
- private static extern void gsapi_run_string_end32(IntPtr instance,
- int usererr, ref int exitcode);
- #endregion DLLInterface
-
- #region DLLErrorCatch
- /* In case the DLL is not found we need to wrap the methods up with
- * a try/catch. Also select 32 or 64 bit DLL at this time. This
- * C# code is compiled as ANYCPU type */
- private int tc_gsapi_revision(ref gsapi_revision_t vers, int size)
- {
- int code = 0;
- try
- {
- if (is64bit)
- code = gsapi_revision64(ref vers, size);
- else
- code = gsapi_revision32(ref vers, size);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- return code;
- }
-
- private int tc_gsapi_new_instance(out IntPtr pinstance, IntPtr caller_handle)
- {
- int code = 0;
- pinstance = IntPtr.Zero;
- try
- {
- if (is64bit)
- code = gsapi_new_instance64(out pinstance, caller_handle);
- else
- code = gsapi_new_instance32(out pinstance, caller_handle);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- return code;
- }
-
- private int tc_gsapi_delete_instance(IntPtr instance)
- {
- try
- {
- if (is64bit)
- gsapi_delete_instance64(instance);
- else
- gsapi_delete_instance32(instance);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- return 0;
- }
-
- private int tc_gsapi_init_with_args(IntPtr instance, int argc, IntPtr argv)
- {
- int code;
-
- try
- {
- if (is64bit)
- code = gsapi_init_with_args64(instance, argc, argv);
- else
- code = gsapi_init_with_args32(instance, argc, argv);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch(System.Reflection.TargetInvocationException ee)
- {
- String output = "TargetInvocationException";
- gsDLLProblemMain(this, output);
- return -1;
- }
-
- return code;
- }
-
- private int tc_gsapi_exit(IntPtr instance)
- {
- int code;
- try
- {
- if (is64bit)
- code = gsapi_exit64(instance);
- else
- code = gsapi_exit32(instance);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- return code;
- }
-
- private int tc_gsapi_set_arg_encoding(IntPtr instance, int encoding)
- {
- int code;
- try
- {
- if (is64bit)
- code = gsapi_set_arg_encoding64(instance, encoding);
- else
- code = gsapi_set_arg_encoding32(instance, encoding);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- return code;
- }
-
- private int tc_gsapi_set_stdio(IntPtr instance, gsStdIOHandler stdin,
- gsStdIOHandler stdout, gsStdIOHandler stderr)
- {
- int code;
- try
- {
- if (is64bit)
- code = gsapi_set_stdio64(instance, stdin, stdout, stderr);
- else
- code = gsapi_set_stdio32(instance, stdin, stdout, stderr);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- return code;
- }
-
- private int tc_gsapi_run_string_begin(IntPtr instance, int usererr,
- ref int exitcode)
- {
- try
- {
- if (is64bit)
- gsapi_run_string_begin64(instance, usererr, ref exitcode);
- else
- gsapi_run_string_begin32(instance, usererr, ref exitcode);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- return 0;
- }
-
- private int tc_gsapi_run_string_continue(IntPtr instance, IntPtr command,
- int count, int usererr, ref int exitcode)
- {
- try
- {
- if (is64bit)
- gsapi_run_string_continue64(instance, command, count, usererr,
- ref exitcode);
- else
- gsapi_run_string_continue32(instance, command, count, usererr,
- ref exitcode);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- return 0;
- }
-
- private int tc_gsapi_run_string_end(IntPtr instance, int usererr,
- ref int exitcode)
- {
- try
- {
- if (is64bit)
- gsapi_run_string_end64(instance, usererr, ref exitcode);
- else
- gsapi_run_string_end32(instance, usererr, ref exitcode);
- }
- catch (DllNotFoundException)
- {
- /* DLL not found */
- String output = "DllNotFoundException: Ghostscript DLL not found";
- gsDLLProblemMain(this, output);
- return -1;
- }
- catch (BadImageFormatException)
- {
- /* Using 32 bit with 64 or vice versa */
- String output = "BadImageFormatException: Incorrect Ghostscript DLL";
- gsDLLProblemMain(this, output);
- return -1;
- }
- return 0;
- }
- #endregion DLLErrorCatch
-
- private int StdInCallback(IntPtr handle, IntPtr pointer, int count)
- {
- String output = Marshal.PtrToStringAnsi(pointer);
- return count;
- }
-
- private int StdOutCallback(IntPtr handle, IntPtr pointer, int count)
- {
- String output = Marshal.PtrToStringAnsi(pointer);
- gsIOUpdateMain(this, output, count);
- if (m_params.task != GS_Task_t.PS_DISTILL)
- {
- /* See if we have a page number */
- if (count >= 7 && output.Substring(0, 4) == "Page")
- {
- String page = output.Substring(5, count - 6);
- int numVal;
- try
- {
- double perc = 0.0;
- numVal = System.Convert.ToInt32(page);
- if (m_params.firstpage == -1 && m_params.lastpage == -1 &&
- m_params.pages == null)
- {
- /* Doing full document */
- perc = 100.0 * (double)numVal / (double)m_params.num_pages;
- }
- else
- {
- if (m_params.pages != null)
- {
- perc = 100.0 * ((double)numVal - m_params.currpage) / (double)m_params.num_pages;
- m_params.currpage = m_params.currpage + 1;
- }
- else
- {
- /* continugous set of pages */
- perc = 100.0 * ((double)numVal - m_params.firstpage + 1) / (double)m_params.num_pages;
- }
- }
- m_worker.ReportProgress((int)perc);
- }
- catch (FormatException e)
- {
- Console.WriteLine("XPSPrint Error: Input string is not a sequence of digits.");
- }
- catch (OverflowException e)
- {
- Console.WriteLine("XPSPrint Error: The number cannot fit in an Int32.");
- }
-
- }
- }
- return count;
- }
-
- private int StdErrCallback(IntPtr handle, IntPtr pointer, int count)
- {
- String output = Marshal.PtrToStringAnsi(pointer);
- gsIOUpdateMain(this, output, count);
- return count;
- }
-
- IntPtr gsInstance;
- BackgroundWorker m_worker;
- bool is64bit;
- gsParams_t m_params;
- /* Callbacks to Main */
- internal delegate void gsDLLProblem(object gsObject, String mess);
- internal event gsDLLProblem gsDLLProblemMain;
- internal delegate void gsIOCallBackMain(object gsObject, String mess, int len);
- internal event gsIOCallBackMain gsIOUpdateMain;
- internal delegate void gsCallBackMain(object gsObject, gsEventArgs info);
- internal event gsCallBackMain gsUpdateMain;
- /* These need to be declared as members, to keep a reference and avoid GC
- * You do not pin delegates */
- gsStdIOHandler RaiseStdInCallback;
- gsStdIOHandler RaiseStdOutCallback;
- gsStdIOHandler RaiseStdErrCallback;
-
- public ghostsharp()
- {
- /* Determine now if we are 64 or 32 bit */
- is64bit = Environment.Is64BitOperatingSystem &&
- Environment.Is64BitProcess;
- m_worker = null;
- gsInstance = IntPtr.Zero;
-
- /* Go ahead and do the assignment here */
- RaiseStdInCallback = StdInCallback;
- RaiseStdOutCallback = StdOutCallback;
- RaiseStdErrCallback = StdErrCallback;
- }
-
- private List<String> GetOptions(String options)
- {
- List<String> optionlist = new List<String>();
-
- if (options != "")
- {
- string[] words = options.Split(' ');
- for (int k = 0; k < words.Length; k++)
- {
- if (words[k].Length > 0)
- {
- optionlist.Add(words[k]);
- }
- }
- }
- return optionlist;
- }
-
- /* A standard command line approach to using gs API */
- private void gsWork1(object sender, DoWorkEventArgs e)
- {
- gsParams_t gsparams = (gsParams_t) e.Argument;
- String out_file = gsparams.outputfile;
- String in_file = gsparams.inputfile;
- int num_params = 8; /* base number */
- int rend_count = 1;
- String options;
- int count;
- List<String> optionlist;
-
- optionlist = GetOptions(gsparams.options);
- num_params = num_params + optionlist.Count;
- if (gsparams.pages != null)
- {
- rend_count = gsparams.pages.Count;
- num_params = num_params + 2;
- }
- if (gsparams.init_file != null)
- num_params = num_params + 1;
- if (gsparams.init_string != null)
- num_params = num_params + 2;
-
- var argParam = new GCHandle[num_params];
- var argPtrs = new IntPtr[num_params];
- String[] strParams = new String[num_params];
- List<byte[]> CharacterArray = new List<byte[]>(num_params);
- GCHandle argPtrsStable;
-
- /* New instance */
- int code = tc_gsapi_new_instance(out gsInstance, IntPtr.Zero);
- if (code < 0)
- {
- gsparams.result = GS_Result_t.gsFAILED;
- e.Result = gsparams;
- return;
- }
-
- code = tc_gsapi_set_stdio(gsInstance, RaiseStdInCallback,
- RaiseStdOutCallback, RaiseStdErrCallback);
- code = tc_gsapi_set_arg_encoding(gsInstance, (int)gsEncoding.GS_ARG_ENCODING_UTF8);
-
- if (code == 0)
- {
- for (int jj = 0; jj < rend_count; jj++)
- {
- strParams[0] = "gs"; /* This does not matter */
- strParams[1] = "-dNOPAUSE";
- strParams[2] = "-dBATCH";
- if (gsparams.devicename != null)
- {
- strParams[3] = "-sDEVICE=" + gsparams.devicename;
- }
- else
- {
- strParams[3] = "-sDEVICE=" + Enum.GetName(typeof(gsDevice_t), gsparams.device);
- }
- strParams[4] = "-r" + gsparams.resolution;
- /* Create temp file if file not specified */
- if (out_file == null)
- {
- out_file = Path.GetTempFileName();
- gsparams.outputfile = out_file;
- }
- count = 5;
- /* Add in the options */
- for (int kk = 0; kk < optionlist.Count; kk++)
- {
- strParams[count] = optionlist[kk];
- count++;
- }
- /* We have discontinuous page selection */
- if (gsparams.pages != null)
- {
- String firstpage, lastpage;
- options = gsparams.options;
- SelectPage curr_page = (SelectPage)(gsparams.pages[jj]);
- firstpage = "-dFirstPage=" + curr_page.Page;
- lastpage = "-dLastPage=" + curr_page.Page;
- strParams[count] = firstpage;
- count++;
- strParams[count] = lastpage;
- count++;
- /* Look for file extension. */
- string extension = System.IO.Path.GetExtension(out_file);
- int len = extension.Length;
- String new_out_file = out_file.Substring(0, out_file.Length - len);
- strParams[count] = "-o" + new_out_file + "_page" + curr_page.Page + extension;
- }
- else
- {
- if (gsparams.need_multi_page)
- {
- /* Look for file extension. */
- string extension = System.IO.Path.GetExtension(out_file);
- int len = extension.Length;
- String new_out_file = out_file.Substring(0, out_file.Length - len);
- strParams[count] = "-o" + new_out_file + "_page%d" + extension;
- }
- else
- strParams[count] = "-o" + out_file;
- }
- if (gsparams.init_string != null)
- {
- count++;
- strParams[count] = "-c";
- count++;
- strParams[count] = gsparams.init_string;
- }
- count++;
- strParams[count] = "-f";
- if (gsparams.init_file != null)
- {
- count++;
- strParams[count] = gsparams.init_file;
- }
- count++;
- strParams[count] = in_file;
-
- /* Now convert our Strings to char* and get pinned handles to these.
- * This keeps the c# GC from moving stuff around on us */
- for (int k = 0; k < num_params; k++)
- {
- CharacterArray.Add(System.Text.Encoding.UTF8.GetBytes(strParams[k].ToCharArray()));
- argParam[k] = GCHandle.Alloc(CharacterArray[k], GCHandleType.Pinned);
- argPtrs[k] = argParam[k].AddrOfPinnedObject();
- }
- /* Also stick the array of pointers into memory that will not be GCd */
- argPtrsStable = GCHandle.Alloc(argPtrs, GCHandleType.Pinned);
-
- code = tc_gsapi_init_with_args(gsInstance, num_params, argPtrsStable.AddrOfPinnedObject());
- /* All the pinned items need to be freed so the GC can do its job */
- for (int k = 0; k < num_params; k++)
- {
- argParam[k].Free();
- }
- argPtrsStable.Free();
- /* Free the character array list in case we have multiple runs */
- CharacterArray.Clear();
-
- if (code < 0)
- break;
- }
- }
-
- int code1 = tc_gsapi_exit(gsInstance);
- if ((code == 0) || (code == gsConstants.E_QUIT))
- code = code1;
-
- tc_gsapi_delete_instance(gsInstance);
- if ((code == 0) || (code == gsConstants.E_QUIT))
- {
- gsparams.result = GS_Result_t.gsOK;
- e.Result = gsparams;
- return;
- }
-
- gsparams.result = GS_Result_t.gsFAILED;
- e.Result = gsparams;
- return;
- }
-
- /* Feeding gs piecemeal so that we can have some progress callback */
- /* Used only for PS Distill */
- private void gsWork2(object sender, DoWorkEventArgs e)
- {
- gsParams_t Params = (gsParams_t)e.Argument;
- String out_file = Params.outputfile;
- String in_file = Params.inputfile;
- int num_params = 6;
- if (Params.options.Length > 0)
- num_params = num_params + 1;
-
- int exitcode = 0;
- var argParam = new GCHandle[num_params];
- var argPtrs = new IntPtr[num_params];
- var Feed = new GCHandle();
- var FeedPtr = new IntPtr();
- String[] strParams = new String[num_params];
- List<byte[]> CharacterArray = new List<byte[]>(num_params);
- GCHandle argPtrsStable;
- Byte[] Buffer = new Byte[gsConstants.GS_READ_BUFFER];
- BackgroundWorker worker = sender as BackgroundWorker;
-
- /* Open the file */
- var fs = new FileStream(in_file, FileMode.Open);
- var len = (int) fs.Length;
- /* New instance */
- int code = tc_gsapi_new_instance(out gsInstance, IntPtr.Zero);
- if (code < 0)
- {
- Params.result = GS_Result_t.gsFAILED;
- e.Result = Params;
- return;
- }
-
- code = tc_gsapi_set_stdio(gsInstance, RaiseStdInCallback,
- RaiseStdOutCallback, RaiseStdErrCallback);
- code = tc_gsapi_set_arg_encoding(gsInstance, (int)gsEncoding.GS_ARG_ENCODING_UTF8);
-
- if (code == 0)
- {
- strParams[0] = "gs"; /* This does not matter */
- strParams[1] = "-dNOPAUSE";
- strParams[2] = "-dBATCH";
- if (Params.devicename != null)
- {
- strParams[3] = "-sDEVICE=" + Params.devicename;
- }
- else
- {
- strParams[3] = "-sDEVICE=" + Enum.GetName(typeof(gsDevice_t), Params.device);
- }
- strParams[4] = "-r" + Params.resolution;
- /* Create temp file if file not specified */
- if (out_file == null)
- {
- out_file = Path.GetTempFileName();
- Params.outputfile = out_file;
- }
- if (Params.options.Length > 0)
- {
- strParams[5] = Params.options;
- strParams[6] = "-o" + out_file;
- } else
- strParams[5] = "-o" + out_file;
-
- /* Now convert our Strings to char* and get pinned handles to these.
- * This keeps the c# GC from moving stuff around on us */
- for (int k = 0; k < num_params; k++)
- {
- CharacterArray.Add(System.Text.Encoding.UTF8.GetBytes(strParams[k].ToCharArray()));
- argParam[k] = GCHandle.Alloc(CharacterArray[k], GCHandleType.Pinned);
- argPtrs[k] = argParam[k].AddrOfPinnedObject();
- }
- /* Also stick the array of pointers into memory that will not be GCd */
- argPtrsStable = GCHandle.Alloc(argPtrs, GCHandleType.Pinned);
-
- code = tc_gsapi_init_with_args(gsInstance, num_params, argPtrsStable.AddrOfPinnedObject());
-
- /* First pin the data buffer */
- Feed = GCHandle.Alloc(Buffer, GCHandleType.Pinned);
- FeedPtr = Feed.AddrOfPinnedObject();
-
- /* Now start feeding the input piece meal and do a call back
- * with our progress */
- if (code == 0)
- {
- int count;
- double perc;
- int total = 0;
-
- tc_gsapi_run_string_begin(gsInstance, 0, ref exitcode);
- while ((count = fs.Read(Buffer, 0, gsConstants.GS_READ_BUFFER)) > 0)
- {
- tc_gsapi_run_string_continue(gsInstance, FeedPtr, count, 0, ref exitcode);
- if (exitcode < 0)
- {
- code = exitcode;
- break;
- }
- total = total + count;
- perc = 100.0 * (double) total / (double) len;
- worker.ReportProgress((int)perc);
- if (worker.CancellationPending == true)
- {
- e.Cancel = true;
- break;
- }
- }
- tc_gsapi_run_string_end(gsInstance, 0, ref exitcode);
- if (code == 0)
- code = exitcode;
- }
-
- /* All the pinned items need to be freed so the GC can do its job */
- for (int k = 0; k < num_params; k++)
- {
- argParam[k].Free();
- }
- argPtrsStable.Free();
- Feed.Free();
- }
-
- int code1 = tc_gsapi_exit(gsInstance);
- if ((code == 0) || (code == gsConstants.E_QUIT))
- code = code1;
-
- tc_gsapi_delete_instance(gsInstance);
- if ((code == 0) || (code == gsConstants.E_QUIT))
- {
- Params.result = GS_Result_t.gsOK;
- e.Result = Params;
- return;
- }
- Params.result = GS_Result_t.gsFAILED;
- e.Result = Params;
- return;
- }
-
- /* Callback */
- private void gsCompleted(object sender, RunWorkerCompletedEventArgs e)
- {
- gsParams_t Value;
- gsEventArgs info;
- gsParams_t Params;
-
- try
- {
- Params = (gsParams_t)e.Result;
- }
- catch(System.Reflection.TargetInvocationException ee)
- {
- /* Something went VERY wrong with GS */
- /* Following is to help debug these issues */
- /* var inner = ee.InnerException;
- var message = ee.Message;
- var inner_message = inner.Message;
- String bound = "\n************\n";
- gsIOUpdateMain(this, bound, bound.Length);
- gsIOUpdateMain(this, message, message.Length);
- gsIOUpdateMain(this, bound, bound.Length);
- gsIOUpdateMain(this, inner_message, inner_message.Length);
- gsIOUpdateMain(this, bound, bound.Length);
- var temp = inner.Source;
- gsIOUpdateMain(this, bound, bound.Length);
- gsIOUpdateMain(this, temp, temp.Length);
- var method = inner.TargetSite;
- gsIOUpdateMain(this, bound, bound.Length);
- var method_name = method.Name;
- gsIOUpdateMain(this, method_name, method_name.Length);
- var stack = inner.StackTrace;
- gsIOUpdateMain(this, bound, bound.Length);
- gsIOUpdateMain(this, stack, stack.Length); */
- String output = "Ghostscript DLL Invalid Access.";
- gsDLLProblemMain(this, output);
- return;
- }
-
- if (Params.task == GS_Task_t.PS_DISTILL)
- m_worker.DoWork -= new DoWorkEventHandler(gsWork2);
- else
- m_worker.DoWork -= new DoWorkEventHandler(gsWork1);
-
- if (e.Cancelled)
- {
- Value = new gsParams_t();
- Value.result = GS_Result_t.gsCANCELLED;
- info = new gsEventArgs(true, 100, Value);
- }
- else
- {
- Value = (gsParams_t)e.Result;
- info = new gsEventArgs(true, 100, Value);
- }
- gsUpdateMain(this, info);
- }
-
- private void gsProgressChanged(object sender, ProgressChangedEventArgs e)
- {
- /* Callback with progress */
- gsParams_t Value = new gsParams_t();
- gsEventArgs info = new gsEventArgs(false, e.ProgressPercentage, Value);
- gsUpdateMain(this, info);
- }
-
- public gsStatus DistillPS(String fileName, int resolution)
- {
- gsParams_t gsparams = new gsParams_t(); ;
-
- gsparams.init_file = null;
- gsparams.init_string = null;
- gsparams.device = gsDevice_t.pdfwrite;
- gsparams.devicename = null;
- gsparams.outputfile = null;
- gsparams.resolution = resolution;
- gsparams.inputfile = fileName;
- gsparams.num_pages = -1;
- gsparams.task = GS_Task_t.PS_DISTILL;
- gsparams.options = "";
- gsparams.need_multi_page = false;
- gsparams.pages = null;
- gsparams.firstpage = -1;
- gsparams.lastpage = -1;
- gsparams.currpage = -1;
- return RunGhostscript(gsparams);
- }
-
- public gsStatus CreateXPS(String fileName, int resolution, int num_pages)
- {
- gsParams_t gsparams = new gsParams_t();
-
- gsparams.init_file = null;
- gsparams.init_string = null;
- gsparams.device = gsDevice_t.xpswrite;
- gsparams.outputfile = null;
- gsparams.resolution = resolution;
- gsparams.inputfile = fileName;
- gsparams.task = GS_Task_t.CREATE_XPS;
- gsparams.num_pages = num_pages;
- gsparams.options = "-dNOCACHE";
- gsparams.need_multi_page = false;
- gsparams.pages = null;
- gsparams.firstpage = -1;
- gsparams.lastpage = -1;
- gsparams.currpage = -1;
- return RunGhostscript(gsparams);
- }
-
- public gsStatus Convert(String fileName, String options, String device,
- String outputFile, int num_pages, int resolution,
- bool multi_page_needed, System.Collections.IList pages,
- int firstpage, int lastpage, String init_file, String init_string)
- {
- gsParams_t gsparams = new gsParams_t();
-
- gsparams.init_file = init_file;
- gsparams.init_string = init_string;
- gsparams.devicename = device;
- gsparams.outputfile = outputFile;
- gsparams.inputfile = fileName;
- gsparams.task = GS_Task_t.SAVE_RESULT;
- gsparams.num_pages = num_pages;
- gsparams.options = options;
- gsparams.resolution = resolution;
- gsparams.need_multi_page = multi_page_needed;
- gsparams.pages = pages;
- gsparams.firstpage = firstpage;
- gsparams.lastpage = lastpage;
- gsparams.currpage = 1;
- return RunGhostscript(gsparams);
- }
-
- public gsStatus GetStatus()
- {
- if (m_worker != null && m_worker.IsBusy)
- return gsStatus.GS_BUSY;
- else
- return gsStatus.GS_READY;
- }
-
- public String GetVersion()
- {
- gsapi_revision_t vers;
- vers.copyright = IntPtr.Zero;
- vers.product = IntPtr.Zero;
- vers.revision = 0;
- vers.revisiondate = 0;
- int size = System.Runtime.InteropServices.Marshal.SizeOf(vers);
-
- if (tc_gsapi_revision(ref vers, size) == 0)
- {
- String product = Marshal.PtrToStringAnsi(vers.product);
- String output;
- int major = vers.revision / 100;
- int minor = vers.revision - major * 100;
- String versnum = major + "." + minor;
- output = product + " " + versnum;
- return output;
- }
- else
- return null;
- }
-
- private gsStatus RunGhostscript(gsParams_t Params)
- {
- try
- {
- if (m_worker != null && m_worker.IsBusy)
- {
- m_worker.CancelAsync();
- return gsStatus.GS_BUSY;
- }
- if (m_worker == null)
- {
- m_worker = new BackgroundWorker();
- m_worker.WorkerReportsProgress = true;
- m_worker.WorkerSupportsCancellation = true;
- m_worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(gsCompleted);
- m_worker.ProgressChanged += new ProgressChangedEventHandler(gsProgressChanged);
- }
-
- if (Params.task == GS_Task_t.PS_DISTILL)
- m_worker.DoWork += new DoWorkEventHandler(gsWork2);
- else
- m_worker.DoWork += new DoWorkEventHandler(gsWork1);
-
- m_params = Params;
- m_worker.RunWorkerAsync(Params);
- return gsStatus.GS_READY;
- }
- catch (OutOfMemoryException e)
- {
- Console.WriteLine("Memory allocation failed during gs rendering\n");
- return gsStatus.GS_ERROR;
- }
- }
-
- public void Cancel()
- {
- m_worker.CancelAsync();
- }
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 07:13:02 +0000