File 0001-msgcat-Add-feature-to-use-the-newest-po-fi... of Package gettext-java

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File 0001-msgcat-Add-feature-to-use-the-newest-po-file.patch of Package gettext-java (Revision a9200a4d8908eab2f5c5a5ecc09d3240)

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From a079538e51c6c6e9855d9e7bde1519eaa59bb94d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mark=C3=A9ta=20Cal=C3=A1bkov=C3=A1?=
 <meggy.calabkova@gmail.com>
Date: Thu, 9 Jan 2020 14:40:25 +0100
Subject: [PATCH 1/2] msgcat: Add feature to use the newest po file.

When concatenating po files, it is often useful to prefer strings from
the newest file regardless their ordering on the command line.
---
 gettext-tools/src/Makefile.am   |  4 +-
 gettext-tools/src/message.c     |  6 +++
 gettext-tools/src/message.h     |  4 ++
 gettext-tools/src/msgcat.c      | 10 ++++
 gettext-tools/src/msgl-age.c    | 96 +++++++++++++++++++++++++++++++++
 gettext-tools/src/msgl-age.h    | 36 +++++++++++++
 gettext-tools/src/msgl-cat.c    | 15 ++++++
 gettext-tools/src/msgl-cat.h    |  1 +
 gettext-tools/src/msgl-header.c | 47 ++++++++++++++++
 gettext-tools/src/msgl-header.h |  6 +++
 10 files changed, 223 insertions(+), 2 deletions(-)
 create mode 100644 gettext-tools/src/msgl-age.c
 create mode 100644 gettext-tools/src/msgl-age.h

Index: gettext-0.21/gettext-tools/src/Makefile.am
===================================================================
--- gettext-0.21.orig/gettext-tools/src/Makefile.am
+++ gettext-0.21/gettext-tools/src/Makefile.am
@@ -43,7 +43,7 @@ noinst_HEADERS = \
   write-catalog.h write-po.h write-properties.h write-stringtable.h \
   dir-list.h file-list.h po-gram-gen.h po-gram-gen2.h cldr-plural.h \
   cldr-plural-exp.h locating-rule.h its.h search-path.h \
-  msgl-charset.h msgl-equal.h msgl-iconv.h msgl-ascii.h msgl-ofn.h msgl-cat.h \
+  msgl-age.h msgl-charset.h msgl-equal.h msgl-iconv.h msgl-ascii.h msgl-ofn.h msgl-cat.h \
   msgl-header.h msgl-english.h msgl-check.h msgl-fsearch.h msgfmt.h msgunfmt.h \
   plural-count.h plural-eval.h plural-distrib.h \
   read-mo.h write-mo.h \
@@ -174,6 +174,7 @@ FORMAT_SOURCE += \
   $(COMMON_SOURCE) \
   read-catalog.c \
   write-catalog.c write-properties.c write-stringtable.c write-po.c \
+  msgl-age.c \
   msgl-ascii.c \
   msgl-ofn.c \
   msgl-iconv.c \
Index: gettext-0.21/gettext-tools/src/message.c
===================================================================
--- gettext-0.21.orig/gettext-tools/src/message.c
+++ gettext-0.21/gettext-tools/src/message.c
@@ -356,6 +356,12 @@ message_list_append (message_list_ty *ml
       abort ();
 }
 
+void
+message_list_append_list (message_list_ty *mlp, message_list_ty *mlp2)
+{
+	for (int i = 0; i < mlp2->nitems; i++)
+		message_list_append (mlp,mlp2->item[i]);
+}
 
 void
 message_list_prepend (message_list_ty *mlp, message_ty *mp)
Index: gettext-0.21/gettext-tools/src/message.h
===================================================================
--- gettext-0.21.orig/gettext-tools/src/message.h
+++ gettext-0.21/gettext-tools/src/message.h
@@ -24,6 +24,7 @@
 #include "mem-hash-map.h"
 
 #include <stdbool.h>
+#include <time.h>
 
 
 #ifdef __cplusplus
@@ -269,6 +270,8 @@ extern void
 extern void
        message_list_append (message_list_ty *mlp, message_ty *mp);
 extern void
+       message_list_append_list (message_list_ty *mlp, message_list_ty *mlp2);
+extern void
        message_list_prepend (message_list_ty *mlp, message_ty *mp);
 extern void
        message_list_insert_at (message_list_ty *mlp, size_t n, message_ty *mp);
@@ -350,6 +353,7 @@ struct msgdomain_list_ty
   size_t nitems_max;
   bool use_hashtable;
   const char *encoding;         /* canonicalized encoding or NULL if unknown */
+  time_t msgage;
 };
 
 extern msgdomain_list_ty *
Index: gettext-0.21/gettext-tools/src/msgcat.c
===================================================================
--- gettext-0.21.orig/gettext-tools/src/msgcat.c
+++ gettext-0.21/gettext-tools/src/msgcat.c
@@ -88,6 +88,7 @@ static const struct option long_options[
   { "to-code", required_argument, NULL, 't' },
   { "unique", no_argument, NULL, 'u' },
   { "use-first", no_argument, NULL, CHAR_MAX + 1 },
+  { "use-newest", no_argument, NULL, CHAR_MAX + 9 },
   { "version", no_argument, NULL, 'V' },
   { "width", required_argument, NULL, 'w' },
   { "more-than", required_argument, NULL, '>' },
@@ -141,6 +142,7 @@ main (int argc, char **argv)
   more_than = 0;
   less_than = INT_MAX;
   use_first = false;
+  use_newest = false;
 
   while ((optchar = getopt_long (argc, argv, "<:>:D:eEf:Fhino:pPst:uVw:",
                                  long_options, NULL)) != EOF)
@@ -277,6 +279,11 @@ main (int argc, char **argv)
         message_print_style_filepos (filepos_comment_none);
         break;
 
+      case CHAR_MAX + 9: /* --use-newest */
+	use_newest = true;
+	use_first = true;
+	break;
+
       default:
         usage (EXIT_FAILURE);
         /* NOTREACHED */
@@ -428,6 +435,9 @@ Output details:\n"));
       --use-first             use first available translation for each\n\
                               message, don't merge several translations\n"));
       printf (_("\
+      --use-newest            use the most up-to-date available translation\n\
+                              for each message, don't merge several translations\n"));
+      printf (_("\
       --lang=CATALOGNAME      set 'Language' field in the header entry\n"));
       printf (_("\
       --color                 use colors and other text attributes always\n\
Index: gettext-0.21/gettext-tools/src/msgl-age.c
===================================================================
--- /dev/null
+++ gettext-0.21/gettext-tools/src/msgl-age.c
@@ -0,0 +1,96 @@
+/* Message list header time simple parser.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   Written by Markéta Calábková <mcalabkova@suse.cz>, 2019.
+
+   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 <https://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <string.h>
+#include <time.h>
+
+#include "xalloc.h"
+#include "error.h"
+#include "xerror.h"
+#include "xvasprintf.h"
+
+#include "msgl-header.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include "gettext.h"
+
+#include "msgl-age.h"
+
+#define _(str) gettext (str)
+
+void
+msgdomain_sort_by_ages (msgdomain_list_ty **mdlps, size_t nfiles)
+{
+	qsort (mdlps, nfiles, sizeof(msgdomain_list_ty*), msgdomain_compare_ages);
+}
+
+int
+msgdomain_compare_ages (const void * p1, const void * p2)
+{
+  if (difftime((*(msgdomain_list_ty **)p2)->msgage, (*(msgdomain_list_ty **)p1)->msgage) > 0)
+    return 1;
+  else
+    return 0;
+}
+
+void
+msgdomain_read_ages (msgdomain_list_ty *mdlp)
+{
+  time_t times[mdlp->nitems];
+  const char * field = "PO-Revision-Date:";
+  char * where;
+
+  for (int i = 0; i < mdlp->nitems; i++)
+    {
+      message_list_ty *mlp = mdlp->item[i]->messages;
+
+      message_list_read_header_field (mlp, field, &where);
+    }
+  struct tm tmptm;
+  char *trail;
+  memset (&tmptm, 0, sizeof(struct tm));
+  if ((trail = strptime (where, "%Y-%m-%d %H:%M:%S%z", &tmptm)) != NULL)
+    mdlp->msgage = mktime (&tmptm);
+  else if ((trail = strptime (where, "%Y-%m-%d %H:%M:%S", &tmptm)) != NULL)
+    mdlp->msgage = mktime (&tmptm);
+  else if ((trail = strptime (where, "%Y-%m-%d %H:%M%z", &tmptm)) != NULL)
+    mdlp->msgage = mktime (&tmptm);
+  else if ((trail = strptime (where, "%Y-%m-%d %H:%M", &tmptm)) != NULL)
+    mdlp->msgage = mktime (&tmptm);
+  else
+  {
+    /* There is probably no creation date. Assign 0 and throw warning. */
+    mdlp->msgage = 0;
+    multiline_warning (xasprintf (_("warning: ")),
+    xasprintf (_("\
+PO-Revision-Date has no or invalid value, assuming it is old.\n\
+")));
+    return;
+  }
+  if ((*trail != '\n') && (*trail != '\0'))
+    multiline_warning (xasprintf (_("warning: ")),
+    xasprintf (_("\
+Unknown trailing characters after PO-Revision-Date, ignoring.\n\
+")));
+}
+
+
+
Index: gettext-0.21/gettext-tools/src/msgl-age.h
===================================================================
--- /dev/null
+++ gettext-0.21/gettext-tools/src/msgl-age.h
@@ -0,0 +1,36 @@
+/* Message list header time simple parser.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   Written by Markéta Calábková <mcalabkova@suse.cz>, 2019.
+
+   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 <https://www.gnu.org/licenses/>.  */
+
+#ifndef _MSGL_AGE_H
+#define _MSGL_AGE_H
+
+#include "message.h"
+
+/* Helper function to compare the ages, needed by qsort. */
+int
+       msgdomain_compare_ages (const void *, const void *);
+
+/* Simple function to modify intern ordering of files 
+ * such that the newer file comes first. In fact it just calls qsort. */
+void
+       msgdomain_sort_by_ages (msgdomain_list_ty **, size_t);
+
+/* Parse dates in PO-Revision-Date: and store them inside the structure. */
+void
+       msgdomain_read_ages (msgdomain_list_ty *);
+
+#endif
Index: gettext-0.21/gettext-tools/src/msgl-cat.c
===================================================================
--- gettext-0.21.orig/gettext-tools/src/msgl-cat.c
+++ gettext-0.21/gettext-tools/src/msgl-cat.c
@@ -37,6 +37,7 @@
 #include "message.h"
 #include "read-catalog.h"
 #include "po-charset.h"
+#include "msgl-age.h"
 #include "msgl-ascii.h"
 #include "msgl-ofn.h"
 #include "msgl-equal.h"
@@ -57,6 +58,11 @@ int less_than;
    If false, merge all available translations into one and fuzzy it.  */
 bool use_first;
 
+/* If true, sort all the translation according to their age and let
+   use_first finish the job.
+   If false, keep the order of translations. */
+bool use_newest;
+
 /* If true, merge like msgcomm.
    If false, merge like msgcat and msguniq.  */
 bool msgcomm_mode = false;
@@ -123,6 +129,15 @@ catenate_msgdomain_list (string_list_ty
   for (n = 0; n < nfiles; n++)
     mdlps[n] = read_catalog_file (files[n], input_syntax);
 
+  /* --use-newest case -- sort messages by time and then let --use-first finish the job */
+  if (use_newest)
+  {
+	  for (n = 0; n < nfiles; n++)
+		msgdomain_read_ages (mdlps[n]);
+
+	  msgdomain_sort_by_ages (mdlps, nfiles);
+  }
+
   /* Determine the canonical name of each input file's encoding.  */
   canon_charsets = XNMALLOC (nfiles, const char **);
   for (n = 0; n < nfiles; n++)
Index: gettext-0.21/gettext-tools/src/msgl-cat.h
===================================================================
--- gettext-0.21.orig/gettext-tools/src/msgl-cat.h
+++ gettext-0.21/gettext-tools/src/msgl-cat.h
@@ -37,6 +37,7 @@ extern DLL_VARIABLE int less_than;
 /* If true, use the first available translation.
    If false, merge all available translations into one and fuzzy it.  */
 extern DLL_VARIABLE bool use_first;
+extern DLL_VARIABLE bool use_newest;
 
 /* If true, merge like msgcomm.
    If false, merge like msgcat and msguniq.  */
Index: gettext-0.21/gettext-tools/src/msgl-header.c
===================================================================
--- gettext-0.21.orig/gettext-tools/src/msgl-header.c
+++ gettext-0.21/gettext-tools/src/msgl-header.c
@@ -222,3 +222,50 @@ message_list_delete_header_field (messag
           }
       }
 }
+
+void
+message_list_read_header_field (message_list_ty *mlp,
+                                  const char *field, char **where_ptr)
+{
+  size_t field_len = strlen (field);
+  size_t j;
+
+  /* Search the header entry.  */
+  for (j = 0; j < mlp->nitems; j++)
+    if (is_header (mlp->item[j]) && !mlp->item[j]->obsolete)
+      {
+	/* We found the correct message. */
+        message_ty *mp = mlp->item[j];
+
+        /* Tag the header entry.  */
+        const char *header = mp->msgstr;
+
+        /* Test whether the field occurs in the header entry.  */
+        const char *h;
+
+        for (h = header; *h != '\0'; )
+          {
+            if (strncmp (h, field, field_len) == 0)
+              break;
+	    /* Jump by lines. */
+            h = strchr (h, '\n');
+            if (h == NULL)
+              break;
+            h++;
+          }
+        if (h != NULL && *h != '\0')
+          {
+            /* We found it and it is nonempty. Read the value of the field.  */
+            h += field_len + 1;
+	    char *enh = strchr (h, '\n');
+	    if (enh != NULL && *enh != '\0')
+	      {
+	        *where_ptr = (char *)XNMALLOC (((enh - h) + 1), char);
+                memcpy (*where_ptr, h, enh - h);
+	        /* Make the string null-terminated. */
+                (*where_ptr)[enh-h] = '\0';
+	      }
+          }
+      }
+}
+
Index: gettext-0.21/gettext-tools/src/msgl-header.h
===================================================================
--- gettext-0.21.orig/gettext-tools/src/msgl-header.h
+++ gettext-0.21/gettext-tools/src/msgl-header.h
@@ -40,6 +40,12 @@ extern void
        message_list_delete_header_field (message_list_ty *mlp,
                                          const char *field);
 
+/* Read the given field from the header.
+   The FIELD name ends in a colon.  */
+extern void
+       message_list_read_header_field (message_list_ty *mlp,
+                                         const char *field, char **where_ptr);
+
 
 #ifdef __cplusplus
 }

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