1 files changed, 266 insertions, 0 deletions
diff --git a/gettext-tools/src/format-qt.c b/gettext-tools/src/format-qt.c
new file mode 100644
index 0000000..3f759a2
--- /dev/null
+++ b/gettext-tools/src/format-qt.c
@@ -0,0 +1,266 @@
+/* Qt format strings.
+   Copyright (C) 2003-2004, 2006-2007, 2009 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
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "format.h"
+#include "xalloc.h"
+#include "xvasprintf.h"
+#include "gettext.h"
+
+#define _(str) gettext (str)
+
+/* Qt format strings are processed by QString::arg and are documented in
+   qt-4.3.0/doc/html/qstring.html.
+   A directive
+     - starts with '%',
+     - is optionally followed by 'L' (indicates locale-dependent processing),
+     - is followed by one or two digits ('0' to '9'). %0n is equivalent to %n.
+   An unterminated directive ('%' or '%L' not followed by a digit or at the
+   end) is not an error.
+   The first .arg() invocation replaces the %n with the lowest numbered n,
+   the next .arg() invocation then replaces the %n with the second-lowest
+   numbered n, and so on.
+   This is inherently buggy because a '%' in the first replacement confuses
+   the second .arg() invocation.
+   To reduce this problem and introduce another one, there are also .arg()
+   methods that take up to 9 strings and perform the replacements in one swoop.
+   But this method works only on strings that contain no 'L' flags and only
+   single-digit argument designators.
+   Although %0 is supported, usually %1 denotes the first argument, %2 the
+   second argument etc.  */
+
+struct spec
+{
+  /* Number of format directives.  */
+  unsigned int directives;
+
+  /* True if the string supports the multi-argument .arg() methods, i.e. if it
+     contains no 'L' flags and only single-digit argument designators.  */
+  bool simple;
+
+  /* Booleans telling which %nn was seen.  */
+  unsigned int arg_count;
+  bool args_used[100];
+};
+
+
+static void *
+format_parse (const char *format, bool translated, char *fdi,
+              char **invalid_reason)
+{
+  const char *const format_start = format;
+  struct spec spec;
+  struct spec *result;
+
+  spec.directives = 0;
+  spec.simple = true;
+  spec.arg_count = 0;
+
+  for (; *format != '\0';)
+    if (*format++ == '%')
+      {
+        const char *dir_start = format - 1;
+        bool locale_flag = false;
+
+        if (*format == 'L')
+          {
+            locale_flag = true;
+            format++;
+          }
+        if (*format >= '0' && *format <= '9')
+          {
+            /* A directive.  */
+            unsigned int number;
+
+            FDI_SET (dir_start, FMTDIR_START);
+            spec.directives++;
+            if (locale_flag)
+              spec.simple = false;
+
+            number = *format - '0';
+            if (format[1] >= '0' && format[1] <= '9')
+              {
+                number = 10 * number + (format[1] - '0');
+                spec.simple = false;
+                format++;
+              }
+
+            while (spec.arg_count <= number)
+              spec.args_used[spec.arg_count++] = false;
+            spec.args_used[number] = true;
+
+            FDI_SET (format, FMTDIR_END);
+
+            format++;
+          }
+      }
+
+  result = XMALLOC (struct spec);
+  *result = spec;
+  return result;
+}
+
+static void
+format_free (void *descr)
+{
+  struct spec *spec = (struct spec *) descr;
+
+  free (spec);
+}
+
+static int
+format_get_number_of_directives (void *descr)
+{
+  struct spec *spec = (struct spec *) descr;
+
+  return spec->directives;
+}
+
+static bool
+format_check (void *msgid_descr, void *msgstr_descr, bool equality,
+              formatstring_error_logger_t error_logger,
+              const char *pretty_msgid, const char *pretty_msgstr)
+{
+  struct spec *spec1 = (struct spec *) msgid_descr;
+  struct spec *spec2 = (struct spec *) msgstr_descr;
+  bool err = false;
+  unsigned int i;
+
+  if (spec1->simple && !spec2->simple)
+    {
+      if (error_logger)
+        error_logger (_("'%s' is a simple format string, but '%s' is not: it contains an 'L' flag or a double-digit argument number"),
+                      pretty_msgid, pretty_msgstr);
+      err = true;
+    }
+
+  if (!err)
+    for (i = 0; i < spec1->arg_count || i < spec2->arg_count; i++)
+      {
+        bool arg_used1 = (i < spec1->arg_count && spec1->args_used[i]);
+        bool arg_used2 = (i < spec2->arg_count && spec2->args_used[i]);
+
+        /* The translator cannot omit a %n from the msgstr because that would
+           yield a "Argument missing" warning at runtime.  */
+        if (arg_used1 != arg_used2)
+          {
+            if (error_logger)
+              {
+                if (arg_used1)
+                  error_logger (_("a format specification for argument %u doesn't exist in '%s'"),
+                                i, pretty_msgstr);
+                else
+                  error_logger (_("a format specification for argument %u, as in '%s', doesn't exist in '%s'"),
+                                i, pretty_msgstr, pretty_msgid);
+              }
+            err = true;
+            break;
+          }
+      }
+
+  return err;
+}
+
+
+struct formatstring_parser formatstring_qt =
+{
+  format_parse,
+  format_free,
+  format_get_number_of_directives,
+  NULL,
+  format_check
+};
+
+
+#ifdef TEST
+
+/* Test program: Print the argument list specification returned by
+   format_parse for strings read from standard input.  */
+
+#include <stdio.h>
+
+static void
+format_print (void *descr)
+{
+  struct spec *spec = (struct spec *) descr;
+  unsigned int i;
+
+  if (spec == NULL)
+    {
+      printf ("INVALID");
+      return;
+    }
+
+  printf ("(");
+  for (i = 0; i < spec->arg_count; i++)
+    {
+      if (i > 0)
+        printf (" ");
+      if (spec->args_used[i])
+        printf ("*");
+      else
+        printf ("_");
+    }
+  printf (")");
+}
+
+int
+main ()
+{
+  for (;;)
+    {
+      char *line = NULL;
+      size_t line_size = 0;
+      int line_len;
+      char *invalid_reason;
+      void *descr;
+
+      line_len = getline (&line, &line_size, stdin);
+      if (line_len < 0)
+        break;
+      if (line_len > 0 && line[line_len - 1] == '\n')
+        line[--line_len] = '\0';
+
+      invalid_reason = NULL;
+      descr = format_parse (line, false, NULL, &invalid_reason);
+
+      format_print (descr);
+      printf ("\n");
+      if (descr == NULL)
+        printf ("%s\n", invalid_reason);
+
+      free (invalid_reason);
+      free (line);
+    }
+
+  return 0;
+}
+
+/*
+ * For Emacs M-x compile
+ * Local Variables:
+ * compile-command: "/bin/sh ../libtool --tag=CC --mode=link gcc -o a.out -static -O -g -Wall -I.. -I../gnulib-lib -I../intl -DHAVE_CONFIG_H -DTEST format-qt.c ../gnulib-lib/libgettextlib.la"
+ * End:
+ */
+
+#endif /* TEST */