From 7d786c0c830b0437aec402e74d9d4cd3a9a30f1b Mon Sep 17 00:00:00 2001
From: Philip Withnall <philip.withnall@collabora.co.uk>
Date: Thu, 11 Jun 2015 19:11:42 +0100
Subject: [PATCH] xgettext: Add support for AppData XML files

AppData files are used to describe an application for package
management, and are described here:

http://people.freedesktop.org/~hughsient/appdata/

They may also currently be translated using intltool or itstool:

http://people.freedesktop.org/~hughsient/appdata/#translation
---
 gettext-tools/doc/gettext.texi         |  18 +-
 gettext-tools/src/ChangeLog            |  12 ++
 gettext-tools/src/FILES                |   3 +
 gettext-tools/src/Makefile.am          |   4 +-
 gettext-tools/src/x-appdata.c          | 383 +++++++++++++++++++++++++++++++++
 gettext-tools/src/x-appdata.h          |  46 ++++
 gettext-tools/src/xgettext.c           |   3 +
 gettext-tools/tests/ChangeLog          |   6 +
 gettext-tools/tests/Makefile.am        |   1 +
 gettext-tools/tests/xgettext-appdata-1 | 119 ++++++++++
 10 files changed, 592 insertions(+), 3 deletions(-)
 create mode 100644 gettext-tools/src/x-appdata.c
 create mode 100644 gettext-tools/src/x-appdata.h
 create mode 100755 gettext-tools/tests/xgettext-appdata-1

diff --git a/gettext-tools/doc/gettext.texi b/gettext-tools/doc/gettext.texi
index 5abd067..701733d 100644
--- a/gettext-tools/doc/gettext.texi
+++ b/gettext-tools/doc/gettext.texi
@@ -469,6 +469,7 @@ Internationalizable Data
 * RST::                         Resource String Table
 * Glade::                       Glade - GNOME user interface description
 * GSettings::                   GSettings - GNOME user configuration schema
+* AppData::                     AppData - freedesktop.org application description
 
 Concluding Remarks
 
@@ -12149,6 +12150,7 @@ using GNU gettext.
 * RST::                         Resource String Table
 * Glade::                       Glade - GNOME user interface description
 * GSettings::                   GSettings - GNOME user configuration schema
+* AppData::                     AppData - freedesktop.org application description
 @end menu
 
 @node POT, RST, List of Data Formats, List of Data Formats
@@ -12194,7 +12196,7 @@ glade, libglade, glade2, libglade2, intltool
 @code{xgettext}, @code{libglade-xgettext}, @code{xml-i18n-extract}, @code{intltool-extract}
 @end table
 
-@node GSettings,  , Glade, List of Data Formats
+@node GSettings, AppData, Glade, List of Data Formats
 @subsection GSettings - GNOME user configuration schema
 
 @table @asis
@@ -12208,6 +12210,20 @@ glib2
 @code{xgettext}, @code{intltool-extract}
 @end table
 
+@node AppData,  , GSettings, List of Data Formats
+@subsection AppData - freedesktop.org application description
+
+@table @asis
+@item RPMs
+appdata-tools, appstream, libappstream-glib, libappstream-glib-builder
+
+@item File extension
+@code{appdata.xml}
+
+@item Extractor
+@code{xgettext}, @code{intltool-extract}, @code{itstool}
+@end table
+
 @c This is the template for new data formats.
 @ignore
 
diff --git a/gettext-tools/src/ChangeLog b/gettext-tools/src/ChangeLog
index c0f53be..1908e19 100644
--- a/gettext-tools/src/ChangeLog
+++ b/gettext-tools/src/ChangeLog
@@ -1,3 +1,15 @@
+2015-06-11  Philip Withnall  <philip.withnall@collabora.co.uk>
+
+	xgettext: add support for AppData files
+	* x-appdata.h: New file.
+	* x-appdata.c: New file.
+	* xgettext.c: Include x-appdata.h.
+	(language_to_extractor): Add AppData rule.
+	(extension_to_language): Add AppData rule.
+	* Makefile.am (noinst_HEADERS): Add x-appdata.h.
+	(xgettext_SOURCES): Add x-appdata.c.
+	* FILES: Update.
+
 2015-06-01  Daiki Ueno  <ueno@gnu.org>
 
 	* x-awk.h (EXTENSIONS_AWK): Register file extensions ".gawk" and
diff --git a/gettext-tools/src/FILES b/gettext-tools/src/FILES
index 5fb474f..b647a84 100644
--- a/gettext-tools/src/FILES
+++ b/gettext-tools/src/FILES
@@ -357,6 +357,9 @@ msgl-check.c
 | x-desktop.h
 | x-desktop.c
 |               String extractor from Desktop Entry file.
+| x-appdata.h
+| x-appdata.c
+|               String extractor for AppData files.
 | xgettext.c
 |               Main source for the 'xgettext' program.
 |
diff --git a/gettext-tools/src/Makefile.am b/gettext-tools/src/Makefile.am
index 234ec5c..3b6203b 100644
--- a/gettext-tools/src/Makefile.am
+++ b/gettext-tools/src/Makefile.am
@@ -54,7 +54,7 @@ po-time.h plural-table.h lang-table.h format.h filters.h \
 xgettext.h x-c.h x-po.h x-sh.h x-python.h x-lisp.h x-elisp.h x-librep.h \
 x-scheme.h x-smalltalk.h x-java.h x-properties.h x-csharp.h x-awk.h x-ycp.h \
 x-tcl.h x-perl.h x-php.h x-stringtable.h x-rst.h x-glade.h x-lua.h \
-x-javascript.h x-vala.h x-gsettings.h x-desktop.h libexpat-compat.h
+x-javascript.h x-vala.h x-gsettings.h x-desktop.h x-appdata.h libexpat-compat.h
 
 EXTRA_DIST += FILES project-id ChangeLog.0
 
@@ -182,7 +182,7 @@ xgettext_SOURCES += \
   x-c.c x-po.c x-sh.c x-python.c x-lisp.c x-elisp.c x-librep.c x-scheme.c \
   x-smalltalk.c x-java.c x-csharp.c x-awk.c x-ycp.c x-tcl.c x-perl.c x-php.c \
   x-rst.c x-glade.c x-lua.c x-javascript.c x-vala.c x-gsettings.c \
-  x-desktop.c
+  x-desktop.c x-appdata.c
 if !WOE32DLL
 msgattrib_SOURCES = msgattrib.c
 else
diff --git a/gettext-tools/src/x-appdata.c b/gettext-tools/src/x-appdata.c
new file mode 100644
index 0000000..b0b9723
--- /dev/null
+++ b/gettext-tools/src/x-appdata.c
@@ -0,0 +1,383 @@
+/* xgettext AppData schema file backend.
+   Copyright (C) 2002-2003, 2005-2009, 2013, 2015 Free Software
+   Foundation, Inc.
+
+   Written by Philip Withnall <philip.withnall@collabora.co.uk>, 2015.
+   Based on GSettings extractor by Daiki Ueno <ueno@gnu.org>, 2013.
+
+   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 "x-appdata.h"
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "message.h"
+#include "xgettext.h"
+#include "error.h"
+#include "xerror.h"
+#include "xvasprintf.h"
+#include "basename.h"
+#include "progname.h"
+#include "xalloc.h"
+#include "hash.h"
+#include "po-charset.h"
+#include "gettext.h"
+#include "libexpat-compat.h"
+
+#define _(s) gettext(s)
+
+
+/* AppData is an XML format for describing application information.
+   The syntax is described here:
+   http://people.freedesktop.org/~hughsient/appdata/
+   Translation is described in the ITS file:
+   http://people.freedesktop.org/~hughsient/appdata/#translation */
+
+
+/* ====================== Keyword set customization.  ====================== */
+
+/* If true extract all strings.  */
+static bool extract_all = false;
+
+
+/* ============================= XML parsing.  ============================= */
+
+#if DYNLOAD_LIBEXPAT || HAVE_LIBEXPAT
+
+/* Accumulator for the extracted messages.  */
+static message_list_ty *mlp;
+
+/* Logical filename, used to label the extracted messages.  */
+static char *logical_file_name;
+
+/* XML parser.  */
+static XML_Parser parser;
+
+enum whitespace_type_ty
+{
+  none,
+  normalize,
+  strip
+};
+typedef enum whitespace_type_ty whitespace_type_ty;
+
+struct element_state
+{
+  bool is_component;  /* the <component> element */
+  bool is_description;  /* the <description> element */
+  bool extract_string;
+  whitespace_type_ty whitespace;
+  char *extracted_context;
+  int lineno;
+  char *buffer;
+  size_t bufmax;
+  size_t buflen;
+};
+static struct element_state *stack;
+static size_t stack_size;
+
+static char *
+normalize_whitespace (const char *text, whitespace_type_ty whitespace)
+{
+  if (whitespace == none)
+    return xstrdup (text);
+  else
+    {
+      char *result, *p;
+
+      /* Strip whitespaces at the beginning/end of the text.  */
+      result = xstrdup (text + strspn (text, " \t\n"));
+      for (p = result + strlen (result);
+           p > result && (*p == '\0' || *p == ' ' || *p == '\t' || *p == '\n');
+           p--)
+        ;
+      if (p > result)
+        *++p = '\0';
+
+      /* Normalize whitespaces within the text.  */
+      if (whitespace == normalize)
+        {
+          char *end = result + strlen (result);
+          for (p = result; *p != '\0';)
+            {
+              size_t len = strspn (p, " \t\n");
+              if (len > 0)
+                {
+                  *p = ' ';
+                  memmove (p + 1, p + len, end - (p + len));
+                  end -= len - 1;
+                  *end = '\0';
+                  p++;
+                }
+              p += strcspn (p, " \t\n");
+            }
+        }
+      return result;
+    }
+}
+
+/* Ensures stack_size >= size.  */
+static void
+ensure_stack_size (size_t size)
+{
+  if (size > stack_size)
+    {
+      stack_size = 2 * stack_size;
+      if (stack_size < size)
+        stack_size = size;
+      stack =
+        (struct element_state *)
+        xrealloc (stack, stack_size * sizeof (struct element_state));
+    }
+}
+
+static size_t stack_depth;
+
+/* Callback called when <element> is seen.  */
+static void
+start_element_handler (void *userData, const char *name,
+                       const char **attributes)
+{
+  struct element_state *p;
+
+  /* Increase stack depth.  */
+  stack_depth++;
+  ensure_stack_size (stack_depth + 1);
+
+  /* Don't extract a string for the containing element.  */
+  stack[stack_depth - 1].extract_string = false;
+
+  p = &stack[stack_depth];
+  p->is_component = (strcmp (name, "component") == 0);
+  p->is_description = (strcmp (name, "description") == 0);
+  p->extract_string = extract_all;
+  p->extracted_context = NULL;
+
+  if (!p->extract_string)
+    {
+      bool has_translatable = false;
+      whitespace_type_ty whitespace = none;
+      const char *extracted_context = NULL;
+      if ((stack_depth == 2 &&
+           stack[1].is_component &&
+           (strcmp (name, "name") == 0 ||
+            strcmp (name, "summary") == 0)) ||
+          (stack_depth > 2 &&
+           stack[1].is_component &&
+           stack[2].is_description))
+        {
+          has_translatable = true;
+          whitespace = normalize;
+        }
+
+      p->extract_string = has_translatable;
+      p->whitespace = whitespace;
+      p->extracted_context =
+        (has_translatable && extracted_context != NULL
+         ? xstrdup (extracted_context)
+         : NULL); 
+   }
+
+  p->lineno = XML_GetCurrentLineNumber (parser);
+  p->buffer = NULL;
+  p->bufmax = 0;
+  p->buflen = 0;
+  if (!p->extract_string)
+    savable_comment_reset ();
+}
+
+/* Callback called when </element> is seen.  */
+static void
+end_element_handler (void *userData, const char *name)
+{
+  struct element_state *p = &stack[stack_depth];
+
+  /* Actually extract string.  */
+  if (p->extract_string)
+    {
+      /* Don't extract the empty string.  */
+      if (p->buflen > 0)
+        {
+          lex_pos_ty pos;
+
+          if (p->buflen == p->bufmax)
+            p->buffer = (char *) xrealloc (p->buffer, p->buflen + 1);
+          p->buffer[p->buflen] = '\0';
+
+          pos.file_name = logical_file_name;
+          pos.line_number = p->lineno;
+
+          if (p->buffer != NULL)
+            {
+              remember_a_message (mlp, p->extracted_context,
+                                  normalize_whitespace (p->buffer,
+                                                        p->whitespace),
+                                  null_context, &pos,
+                                  NULL, savable_comment);
+              p->extracted_context = NULL;
+            }
+        }
+    }
+
+  /* Free memory for this stack level.  */
+  if (p->extracted_context != NULL)
+    free (p->extracted_context);
+  if (p->buffer != NULL)
+    free (p->buffer);
+
+  /* Decrease stack depth.  */
+  stack_depth--;
+
+  savable_comment_reset ();
+}
+
+/* Callback called when some text is seen.  */
+static void
+character_data_handler (void *userData, const char *s, int len)
+{
+  struct element_state *p = &stack[stack_depth];
+
+  /* Accumulate character data.  */
+  if (len > 0)
+    {
+      if (p->buflen + len > p->bufmax)
+        {
+          p->bufmax = 2 * p->bufmax;
+          if (p->bufmax < p->buflen + len)
+            p->bufmax = p->buflen + len;
+          p->buffer = (char *) xrealloc (p->buffer, p->bufmax);
+        }
+      memcpy (p->buffer + p->buflen, s, len);
+      p->buflen += len;
+    }
+}
+
+/* Callback called when some comment text is seen.  */
+static void
+comment_handler (void *userData, const char *data)
+{
+  /* Split multiline comment into lines, and remove leading and trailing
+     whitespace.  */
+  char *copy = xstrdup (data);
+  char *p;
+  char *q;
+
+  for (p = copy; (q = strchr (p, '\n')) != NULL; p = q + 1)
+    {
+      while (p[0] == ' ' || p[0] == '\t')
+        p++;
+      while (q > p && (q[-1] == ' ' || q[-1] == '\t'))
+        q--;
+      *q = '\0';
+      savable_comment_add (p);
+    }
+  q = p + strlen (p);
+  while (p[0] == ' ' || p[0] == '\t')
+    p++;
+  while (q > p && (q[-1] == ' ' || q[-1] == '\t'))
+    q--;
+  *q = '\0';
+  savable_comment_add (p);
+  free (copy);
+}
+
+
+static void
+do_extract_appdata (FILE *fp,
+                    const char *real_filename, const char *logical_filename,
+                    msgdomain_list_ty *mdlp)
+{
+  mlp = mdlp->item[0]->messages;
+
+  /* expat feeds us strings in UTF-8 encoding.  */
+  xgettext_current_source_encoding = po_charset_utf8;
+
+  logical_file_name = xstrdup (logical_filename);
+
+  parser = XML_ParserCreate (NULL);
+  if (parser == NULL)
+    error (EXIT_FAILURE, 0, _("memory exhausted"));
+
+  XML_SetElementHandler (parser, start_element_handler, end_element_handler);
+  XML_SetCharacterDataHandler (parser, character_data_handler);
+  XML_SetCommentHandler (parser, comment_handler);
+
+  stack_depth = 0;
+
+  while (!feof (fp))
+    {
+      char buf[4096];
+      int count = fread (buf, 1, sizeof buf, fp);
+
+      if (count == 0)
+        {
+          if (ferror (fp))
+            error (EXIT_FAILURE, errno, _("\
+error while reading \"%s\""), real_filename);
+          /* EOF reached.  */
+          break;
+        }
+
+      if (XML_Parse (parser, buf, count, 0) == 0)
+        error (EXIT_FAILURE, 0, _("%s:%lu:%lu: %s"), logical_filename,
+               (unsigned long) XML_GetCurrentLineNumber (parser),
+               (unsigned long) XML_GetCurrentColumnNumber (parser) + 1,
+               XML_ErrorString (XML_GetErrorCode (parser)));
+    }
+
+  if (XML_Parse (parser, NULL, 0, 1) == 0)
+    error (EXIT_FAILURE, 0, _("%s:%lu:%lu: %s"), logical_filename,
+           (unsigned long) XML_GetCurrentLineNumber (parser),
+           (unsigned long) XML_GetCurrentColumnNumber (parser) + 1,
+           XML_ErrorString (XML_GetErrorCode (parser)));
+
+  XML_ParserFree (parser);
+
+  /* Close scanner.  */
+  logical_file_name = NULL;
+  parser = NULL;
+}
+
+#endif
+
+void
+extract_appdata (FILE *fp,
+                 const char *real_filename, const char *logical_filename,
+                 flag_context_list_table_ty *flag_table,
+                 msgdomain_list_ty *mdlp)
+{
+#if DYNLOAD_LIBEXPAT || HAVE_LIBEXPAT
+  if (LIBEXPAT_AVAILABLE ())
+    do_extract_appdata (fp, real_filename, logical_filename, mdlp);
+  else
+#endif
+    {
+      multiline_error (xstrdup (""),
+                       xasprintf (_("\
+Language \"appdata\" is not supported. %s relies on expat.\n\
+This version was built without expat.\n"),
+                                  basename (program_name)));
+      exit (EXIT_FAILURE);
+    }
+}
diff --git a/gettext-tools/src/x-appdata.h b/gettext-tools/src/x-appdata.h
new file mode 100644
index 0000000..57de593
--- /dev/null
+++ b/gettext-tools/src/x-appdata.h
@@ -0,0 +1,46 @@
+/* xgettext AppData file backend.
+   Copyright (C) 2002-2003, 2006, 2013, 2015 Free Software Foundation,
+   Inc.
+   Written by Philip Withnall <philip.withnall@collabora.co.uk>, 2015.
+
+   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/>.  */
+
+
+#include <stdio.h>
+
+#include "message.h"
+#include "xgettext.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define EXTENSIONS_APPDATA \
+  { "appdata.xml", "appdata" }, \
+
+#define SCANNERS_APPDATA \
+  { "appdata", extract_appdata, NULL, NULL, NULL, NULL }, \
+
+/* Scan an AppData XML file and add its translatable strings to mdlp.  */
+extern void extract_appdata (FILE *fp, const char *real_filename,
+                             const char *logical_filename,
+                             flag_context_list_table_ty *flag_table,
+                             msgdomain_list_ty *mdlp);
+
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/gettext-tools/src/xgettext.c b/gettext-tools/src/xgettext.c
index 9f5d300..6eae9a9 100644
--- a/gettext-tools/src/xgettext.c
+++ b/gettext-tools/src/xgettext.c
@@ -89,6 +89,7 @@
 #include "x-java.h"
 #include "x-properties.h"
 #include "x-csharp.h"
+#include "x-appdata.h"
 #include "x-awk.h"
 #include "x-ycp.h"
 #include "x-tcl.h"
@@ -3706,6 +3707,7 @@ language_to_extractor (const char *name)
     SCANNERS_VALA
     SCANNERS_GSETTINGS
     SCANNERS_DESKTOP
+    SCANNERS_APPDATA
     /* Here may follow more languages and their scanners: pike, etc...
        Make sure new scanners honor the --exclude-file option.  */
   };
@@ -3796,6 +3798,7 @@ extension_to_language (const char *extension)
     EXTENSIONS_VALA
     EXTENSIONS_GSETTINGS
     EXTENSIONS_DESKTOP
+    EXTENSIONS_APPDATA
     /* Here may follow more file extensions... */
   };
 
diff --git a/gettext-tools/tests/ChangeLog b/gettext-tools/tests/ChangeLog
index 872ca71..156398a 100644
--- a/gettext-tools/tests/ChangeLog
+++ b/gettext-tools/tests/ChangeLog
@@ -1,3 +1,9 @@
+2015-06-11  Philip Withnall  <philip.withnall@collabora.co.uk>
+
+	xgettext: add support for AppData files
+	* Makefile.am (TESTS): Add xgettext-appdata-1.
+	* xgettext-appdata-1: New file.
+
 2015-03-12  Daiki Ueno  <ueno@gnu.org>
 
 	* Makefile.am (sentence_CPPFLAGS): Add -I$(top_srcdir)/src and
diff --git a/gettext-tools/tests/Makefile.am b/gettext-tools/tests/Makefile.am
index 03cd1d8..1e7d663 100644
--- a/gettext-tools/tests/Makefile.am
+++ b/gettext-tools/tests/Makefile.am
@@ -74,6 +74,7 @@ TESTS = gettext-1 gettext-2 gettext-3 gettext-4 gettext-5 gettext-6 gettext-7 \
 	xgettext-2 xgettext-3 xgettext-4 xgettext-5 xgettext-6 \
 	xgettext-7 xgettext-8 xgettext-9 xgettext-10 xgettext-11 xgettext-12 \
 	xgettext-13 xgettext-14 \
+	xgettext-appdata-1 \
 	xgettext-awk-1 xgettext-awk-2 \
 	xgettext-c-2 xgettext-c-3 xgettext-c-4 xgettext-c-5 \
 	xgettext-c-6 xgettext-c-7 xgettext-c-8 xgettext-c-9 xgettext-c-10 \
diff --git a/gettext-tools/tests/xgettext-appdata-1 b/gettext-tools/tests/xgettext-appdata-1
new file mode 100755
index 0000000..14543d0
--- /dev/null
+++ b/gettext-tools/tests/xgettext-appdata-1
@@ -0,0 +1,119 @@
+#!/bin/sh
+. "${srcdir=.}/init.sh"; path_prepend_ . ../src
+
+# Test of AppData support.
+
+cat <<EOF > xg-gs-1-empty.appdata.xml
+<?xml version="1.0"?>
+<component type="desktop"/>
+EOF
+
+: ${XGETTEXT=xgettext}
+${XGETTEXT} -o xg-gs-1.pot xg-gs-1-empty.appdata.xml 2>/dev/null
+test $? = 0 || {
+  echo "Skipping test: xgettext was built without AppData support"
+  exit 77
+}
+
+cat <<EOF > xg-gs-1.appdata.xml
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright 2013 First Lastname <your@email.com> -->
+<component type="desktop">
+  <id>gnome-power-statistics.desktop</id>
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>GPL-2.0+ and GFDL-1.3</project_license>
+  <name>Power Statistics</name>
+  <summary>Observe power management</summary>
+  <description>
+    <p>
+      Power Statistics is a program used to view historical and current battery
+      information and will show programs running on your computer using power.
+    </p>
+    <p>Example list:</p>
+    <ul>
+      <li>First item</li>
+      <li>Second item</li>
+    </ul>
+    <p>
+      You probably only need to install this application if you are having problems
+      with your laptop battery, or are trying to work out what programs are using
+      significant amounts of power.
+    </p>
+  </description>
+  <screenshots>
+    <screenshot type="default">
+      <image>http://www.hughsie.com/en_US/main.png</image>
+      <caption>The main window showing the application in action</caption>
+    </screenshot>
+    <screenshot>
+      <image>http://www.hughsie.com/en_US/preferences.png</image>
+      <caption>The preferences window where you can change the defaults</caption>
+    </screenshot>
+  </screenshots>
+  <url type="homepage">http://www.gnome.org/projects/en_US/gnome-power-manager</url>
+  <updatecontact>gnome-power-manager-list@gnome.org</updatecontact>
+  <project_group>GNOME</project_group>
+</component>
+EOF
+
+: ${XGETTEXT=xgettext}
+${XGETTEXT} --add-comments -o - xg-gs-1.appdata.xml | grep -v 'POT-Creation-Date' > xg-gs-1.pot || exit 1
+
+cat <<EOF > xg-gs-1.ok
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: xg-gs-1.appdata.xml:7
+msgid "Power Statistics"
+msgstr ""
+
+#: xg-gs-1.appdata.xml:8
+msgid "Observe power management"
+msgstr ""
+
+#: xg-gs-1.appdata.xml:10
+msgid ""
+"Power Statistics is a program used to view historical and current battery "
+"information and will show programs running on your computer using power."
+msgstr ""
+
+#: xg-gs-1.appdata.xml:14
+msgid "Example list:"
+msgstr ""
+
+#: xg-gs-1.appdata.xml:16
+msgid "First item"
+msgstr ""
+
+#: xg-gs-1.appdata.xml:17
+msgid "Second item"
+msgstr ""
+
+#: xg-gs-1.appdata.xml:19
+msgid ""
+"You probably only need to install this application if you are having "
+"problems with your laptop battery, or are trying to work out what programs "
+"are using significant amounts of power."
+msgstr ""
+EOF
+
+: ${DIFF=diff}
+${DIFF} xg-gs-1.ok xg-gs-1.pot
+result=$?
+
+exit $result
-- 
2.1.0

