Paul J. Lucas has proposed merging lp:~paul-lucas/zorba/pjl-misc into lp:zorba.

Commit message:
1. Now handling locale inform returning empty string for unsupported locales.
2. Hard-coded English for locale information so English is always supported.

Requested reviews:
  Paul J. Lucas (paul-lucas)

For more details, see:
https://code.launchpad.net/~paul-lucas/zorba/pjl-misc/+merge/155084

1. Now handling locale inform returning empty string for unsupported locales.
2. Hard-coded English for locale information so English is always supported.
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https://code.launchpad.net/~paul-lucas/zorba/pjl-misc/+merge/155084
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=== modified file 'src/runtime/durations_dates_times/format_dateTime.cpp'
--- src/runtime/durations_dates_times/format_dateTime.cpp	2013-03-22 04:29:06 +0000
+++ src/runtime/durations_dates_times/format_dateTime.cpp	2013-03-22 23:57:22 +0000
@@ -166,6 +166,9 @@
     second.at_type = no_second_at;
     min_width = max_width = 0;
   };
+
+  // default modifier(modifier const&) is fine
+  // default modifier& operator(modifier const&) is fine
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -479,32 +482,43 @@
 }
 
 static void append_month( unsigned mon, modifier const &mod, zstring *dest ) {
+  modifier mod_copy( mod );
   switch ( mod.first.type ) {
     case modifier::name:
     case modifier::Name:
     case modifier::NAME: {
       zstring name( locale::get_month_name( mon, mod.lang, mod.country ) );
-      utf8_string<zstring> u_name( name );
-      if ( mod.gt_max_width( u_name.size() ) ) {
-        //
-        // XQuery 3.0 F&O: 9.8.4.1: If the full representation of the value
-        // exceeds the specified maximum width, then the processor should
-        // attempt to use an alternative shorter representation that fits
-        // within the maximum width.  Where the presentation modifier is N, n,
-        // or Nn, this is done by abbreviating the name, using either
-        // conventional abbreviations if available, or crude right-truncation
-        // if not.
-        //
-        name = locale::get_month_abbr( mon, mod.lang, mod.country );
-        if ( mod.gt_max_width( u_name.size() ) )
-          u_name = u_name.substr( 0, mod.max_width );
+      if ( !name.empty() ) {
+        utf8_string<zstring> u_name( name );
+        if ( mod.gt_max_width( u_name.size() ) ) {
+          //
+          // XQuery 3.0 F&O: 9.8.4.1: If the full representation of the value
+          // exceeds the specified maximum width, then the processor should
+          // attempt to use an alternative shorter representation that fits
+          // within the maximum width.  Where the presentation modifier is N,
+          // n, or Nn, this is done by abbreviating the name, using either
+          // conventional abbreviations if available, or crude right-truncation
+          // if not.
+          //
+          zstring abbr = locale::get_month_abbr( mon, mod.lang, mod.country );
+          if ( !abbr.empty() ) {
+            utf8_string<zstring> u_abbr( abbr );
+            if ( mod.gt_max_width( u_abbr.size() ) )
+              u_abbr = u_abbr.substr( 0, mod.max_width );
+            name = abbr;
+          } else
+            u_name = u_name.substr( 0, mod.max_width );
+        }
+        mod.append_if_fallback_lang( dest );
+        append_string( name, mod, dest );
+        break;
       }
-      mod.append_if_fallback_lang( dest );
-      append_string( name, mod, dest );
-      break;
+      mod_copy.first.type = modifier::arabic;
+      mod_copy.first.format.clear();
+      // no break;
     }
     default:
-      append_number( mon + 1, mod, dest );
+      append_number( mon + 1, mod_copy, dest );
   }
 }
 
@@ -698,24 +712,35 @@
     case modifier::Name:
     case modifier::NAME: {
       zstring name( locale::get_weekday_name( wday, mod.lang, mod.country ) );
-      utf8_string<zstring> u_name( name );
-      if ( mod.gt_max_width( u_name.size() ) ) {
-        //
-        // XQuery 3.0 F&O: 9.8.4.1: If the full representation of the value
-        // exceeds the specified maximum width, then the processor should
-        // attempt to use an alternative shorter representation that fits
-        // within the maximum width.  Where the presentation modifier is N, n,
-        // or Nn, this is done by abbreviating the name, using either
-        // conventional abbreviations if available, or crude right-truncation
-        // if not.
-        //
-        name = locale::get_weekday_abbr( wday, mod.lang, mod.country );
-        if ( mod.gt_max_width( u_name.size() ) )
-          u_name = u_name.substr( 0, mod.max_width );
+      if ( !name.empty() ) {
+        utf8_string<zstring> u_name( name );
+        if ( mod.gt_max_width( u_name.size() ) ) {
+          //
+          // XQuery 3.0 F&O: 9.8.4.1: If the full representation of the value
+          // exceeds the specified maximum width, then the processor should
+          // attempt to use an alternative shorter representation that fits
+          // within the maximum width.  Where the presentation modifier is N,
+          // n, or Nn, this is done by abbreviating the name, using either
+          // conventional abbreviations if available, or crude right-truncation
+          // if not.
+          //
+          zstring abbr =
+            locale::get_weekday_abbr( wday, mod.lang, mod.country );
+          if ( !abbr.empty() ) {
+            utf8_string<zstring> u_abbr( abbr );
+            if ( mod.gt_max_width( u_abbr.size() ) )
+              u_abbr = u_abbr.substr( 0, mod.max_width );
+            name = abbr;
+          } else
+            u_name = u_name.substr( 0, mod.max_width );
+        }
+        mod.append_if_fallback_lang( dest );
+        append_string( name, mod_copy, dest );
+        break;
       }
-      mod.append_if_fallback_lang( dest );
-      append_string( name, mod_copy, dest );
-      break;
+      mod_copy.first.type = modifier::arabic;
+      mod_copy.first.format.clear();
+      // no break;
     }
     default: {
       int const new_wday = calendar::convert_wday_to( wday, mod.cal );

=== modified file 'src/zorbautils/locale.cpp'
--- src/zorbautils/locale.cpp	2013-03-21 19:39:11 +0000
+++ src/zorbautils/locale.cpp	2013-03-22 23:57:22 +0000
@@ -597,7 +597,7 @@
     PK     , // dz: Bhutani => Pakistan
     unknown, // ee: Ewe => (maps to multiple countries)
     GR     , // el: Greek => Greece
-    GB     , // en: English => United Kingdom
+    US     , // en: English => United States
     unknown, // eo: Esperanto => (constructed language)
     ES     , // es: Spanish => Spain
     EE     , // et: Estonian => Estonia
@@ -1298,7 +1298,10 @@
   } // for
   return format;
 #else
-  return get_locale_info( D_FMT, lang, country );
+  zstring fmt( get_locale_info( D_FMT, lang, country ) );
+  if ( fmt.empty() && lang == iso639_1::en )
+    fmt = "%d-%b-%Y";                   // dd-Mon-yyyy
+  return fmt;
 #endif /* WIN32 */
 }
 
@@ -1311,7 +1314,10 @@
   return get_date_format( lang, country ) + ' ' +
          get_time_format( lang, country );
 #else
-  return get_locale_info( D_T_FMT, lang, country );
+  zstring fmt( get_locale_info( D_T_FMT, lang, country ) );
+  if ( fmt.empty() && lang == iso639_1::en )
+    fmt = "%a %b %e %X %Y";
+  return fmt;
 #endif /* WIN32 */
 }
 
@@ -1373,7 +1379,15 @@
 
   if ( month_index > 11 )
     throw invalid_argument( BUILD_STRING( month_index, " not in range 0-11" ) );
-  return get_locale_info( month_abbr[ month_index ], lang, country );
+  zstring abbr( get_locale_info( month_abbr[ month_index ], lang, country ) );
+  if ( abbr.empty() && lang == iso639_1::en ) {
+    static char const *const abbr_str[] = {
+      "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+      "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+    };
+    abbr = abbr_str[ month_index ];
+  }
+  return abbr;
 }
 
 zstring get_month_name( unsigned month_index, iso639_1::type lang,
@@ -1392,7 +1406,15 @@
 
   if ( month_index > 11 )
     throw invalid_argument( BUILD_STRING( month_index, " not in range 0-11" ) );
-  return get_locale_info( month_name[ month_index ], lang, country );
+  zstring name( get_locale_info( month_name[ month_index ], lang, country ) );
+  if ( name.empty() && lang == iso639_1::en ) {
+    static char const *const name_str[] = {
+      "January", "February", "March", "April", "May", "June",
+      "July", "August", "Sepember", "October", "November", "December"
+    };
+    name = name_str[ month_index ];
+  }
+  return name;
 }
 
 zstring get_time_ampm( bool pm, iso639_1::type lang, iso3166_1::type country ) {
@@ -1403,7 +1425,10 @@
     AM_STR, PM_STR
 #endif /* WIN32 */
   };
-  return get_locale_info( ampm[ pm ], lang, country );
+  zstring s( get_locale_info( ampm[ pm ], lang, country ) );
+  if ( s.empty() && lang == iso639_1::en )
+    s = pm ? "PM" : "AM";
+  return s;
 }
 
 zstring get_time_format( iso639_1::type lang, iso3166_1::type country ) {
@@ -1457,7 +1482,10 @@
   } // for
   return format;
 #else
-  return get_locale_info( T_FMT, lang, country );
+  zstring fmt( get_locale_info( T_FMT, lang, country ) );
+  if ( fmt.empty() && lang == iso639_1::en )
+    fmt = "%H:%M:%S";
+  return fmt;
 #endif /* WIN32 */
 }
 
@@ -1479,7 +1507,14 @@
 
   if ( day_index > 6 )
     throw invalid_argument( BUILD_STRING( day_index, " not in range 0-6" ) );
-  return get_locale_info( weekday_abbr[ day_index ], lang, country );
+  zstring abbr( get_locale_info( weekday_abbr[ day_index ], lang, country ) );
+  if ( abbr.empty() && lang == iso639_1::en ) {
+    static char const *const abbr_str[] = {
+      "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+    };
+    abbr = abbr_str[ day_index ];
+  }
+  return abbr;
 }
 
 zstring get_weekday_name( unsigned day_index, iso639_1::type lang,
@@ -1500,7 +1535,15 @@
 
   if ( day_index > 6 )
     throw invalid_argument( BUILD_STRING( day_index, " not in range 0-6" ) );
-  return get_locale_info( weekday_name[ day_index ], lang, country );
+  zstring name( get_locale_info( weekday_name[ day_index ], lang, country ) );
+  if ( name.empty() && lang == iso639_1::en ) {
+    static char const *const name_str[] = {
+      "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
+      "Saturday"
+    };
+    name = name_str[ day_index ];
+  }
+  return name;
 }
 
 bool is_supported( iso639_1::type lang, iso3166_1::type country ) {
@@ -1510,6 +1553,8 @@
   unique_ptr<WCHAR[]> const wlocale_name( get_wlocale_name( lang, country ) );
   return Zorba_IsValidLocaleName( wlocale_name.get() );
 #else
+  if ( lang == iso639_1::en )
+    return true;                        // Always support English
   if ( locale_t const loc = get_unix_locale_t( lang, country ) ) {
     ::freelocale( loc );
     return true;

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