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/* Reading C# satellite assemblies.
   Copyright (C) 2003-2004, 2006-2008, 2011, 2015-2016 Free Software
   Foundation, Inc.
   Written by Bruno Haible <bruno@clisp.org>, 2003.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

/* Specification.  */
#include "read-csharp.h"

#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

#include "msgunfmt.h"
#include "relocatable.h"
#include "csharpexec.h"
#include "spawn-pipe.h"
#include "wait-process.h"
#include "read-catalog.h"
#include "read-po.h"
#include "xalloc.h"
#include "concat-filename.h"
#include "error.h"
#include "gettext.h"

#define _(str) gettext (str)


/* A C# satellite assembly can only be manipulated by a C# execution engine.
   So we start a C# process to execute the DumpResource program, and read its
   output, which is .po format without comments.  */

struct locals
{
  /* OUT */
  msgdomain_list_ty *mdlp;
};

static bool
execute_and_read_po_output (const char *progname,
                            const char *prog_path, char **prog_argv,
                            void *private_data)
{
  struct locals *l = (struct locals *) private_data;
  pid_t child;
  int fd[1];
  FILE *fp;
  int exitstatus;

  /* Open a pipe to the C# execution engine.  */
  child = create_pipe_in (progname, prog_path, prog_argv, DEV_NULL, false,
                          true, true, fd);

  fp = fdopen (fd[0], "r");
  if (fp == NULL)
    error (EXIT_FAILURE, errno, _("fdopen() failed"));

  /* Read the message list.  */
  l->mdlp = read_catalog_stream (fp, "(pipe)", "(pipe)", &input_format_po);

  fclose (fp);

  /* Remove zombie process from process list, and retrieve exit status.  */
  exitstatus =
    wait_subprocess (child, progname, false, false, true, true, NULL);
  if (exitstatus != 0)
    error (EXIT_FAILURE, 0, _("%s subprocess failed with exit code %d"),
           progname, exitstatus);

  return false;
}


msgdomain_list_ty *
msgdomain_read_csharp (const char *resource_name, const char *locale_name,
                       const char *directory)
{
  char *culture_name;
  const char *args[4];
  const char *gettextexedir;
  const char *gettextlibdir;
  char *assembly_path;
  const char *libdirs[1];
  struct locals locals;

  /* Assign a default value to the resource name.  */
  if (resource_name == NULL)
    resource_name = "Messages";

  /* Convert the locale name to a .NET specific culture name.  */
  culture_name = xstrdup (locale_name);
  {
    char *p;
    for (p = culture_name; *p != '\0'; p++)
      if (*p == '_')
        *p = '-';
    if (strncmp (culture_name, "sr-CS", 5) == 0)
      memcpy (culture_name, "sr-SP", 5);
    p = strchr (culture_name, '@');
    if (p != NULL)
      {
        if (strcmp (p, "@latin") == 0)
          strcpy (p, "-Latn");
        else if (strcmp (p, "@cyrillic") == 0)
          strcpy (p, "-Cyrl");
      }
    if (strcmp (culture_name, "sr-SP") == 0)
      {
        free (culture_name);
        culture_name = xstrdup ("sr-SP-Latn");
      }
    else if (strcmp (culture_name, "uz-UZ") == 0)
      {
        free (culture_name);
        culture_name = xstrdup ("uz-UZ-Latn");
      }
  }

  /* Prepare arguments.  */
  args[0] = directory;
  args[1] = resource_name;
  args[2] = culture_name;
  args[3] = NULL;

  /* Make it possible to override the .exe location.  This is
     necessary for running the testsuite before "make install".  */
  gettextexedir = getenv ("GETTEXTCSHARPEXEDIR");
  if (gettextexedir == NULL || gettextexedir[0] == '\0')
    gettextexedir = relocate (LIBDIR "/gettext");

  /* Make it possible to override the .dll location.  This is
     necessary for running the testsuite before "make install".  */
  gettextlibdir = getenv ("GETTEXTCSHARPLIBDIR");
  if (gettextlibdir == NULL || gettextlibdir[0] == '\0')
    gettextlibdir = relocate (LIBDIR);

  /* Dump the resource and retrieve the resulting output.  */
  assembly_path =
    xconcatenated_filename (gettextexedir, "msgunfmt.net", ".exe");
  libdirs[0] = gettextlibdir;
  if (execute_csharp_program (assembly_path, libdirs, 1,
                              args,
                              verbose, false,
                              execute_and_read_po_output, &locals))
    /* An error message should already have been provided.  */
    exit (EXIT_FAILURE);

  free (assembly_path);
  free (culture_name);

  return locals.mdlp;
}