[PATCH 08/13] helper: New function value_to_text__().

[Ben Pfaff]

One potential caller of value_to_text() doesn't have a "struct
variable" but does have the other needed information.
---
 src/ui/gui/helper.c |   21 ++++++++++++++++++---
 src/ui/gui/helper.h |    2 ++
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/ui/gui/helper.c b/src/ui/gui/helper.c
index 30f7da1..04c9bfe 100644
--- a/src/ui/gui/helper.c
+++ b/src/ui/gui/helper.c
@@ -58,10 +58,26 @@
 gchar *
 value_to_text (union value v, const struct variable *var)
 {
+  return value_to_text__ (v, var_get_print_format (var),
+                          var_get_encoding (var));
+}
+
+/* Formats a value with format FORMAT and strips white space appropriately for
+   FORMATs' type.  That is, if FORMAT is numeric, strips leading white space
+   (because numbers are right-justified within their fields), and if FORMAT is
+   string, strips trailing white space (because spaces pad out string values on
+   the right).
+
+   Returns an allocated string.  The returned string must be freed when no
+   longer required. */
+gchar *
+value_to_text__ (union value v,
+                 const struct fmt_spec *format, const char *encoding)
+{
   gchar *s;
 
-  s = data_out (&v, var_get_encoding (var), var_get_print_format (var));
-  if (var_is_numeric (var))
+  s = data_out (&v, encoding, format);
+  if (fmt_is_numeric (format->type))
     g_strchug (s);
   else
     g_strchomp (s);
@@ -69,7 +85,6 @@ value_to_text (union value v, const struct variable *var)
   return s;
 }
 
-
 /* Converts TEXT to a value.
 
    VAL will be initialised and filled by this function.
diff --git a/src/ui/gui/helper.h b/src/ui/gui/helper.h
index 25b9d50..d9fb3d6 100644
--- a/src/ui/gui/helper.h
+++ b/src/ui/gui/helper.h
@@ -46,6 +46,8 @@ null_if_empty_param (const gchar *name, const gchar *nick,
 
 
 gchar * value_to_text (union value v, const struct variable *);
+gchar * value_to_text__ (union value v, const struct fmt_spec *,
+                         const char *encoding);
 
 
 union value *
-- 
1.7.2.5