Add FcPatternGetWithBinding() to obtain the binding type of the value in FcPattern.

https://bugs.freedesktop.org/show_bug.cgi?id=19375

doc/fcpattern.fncs

@@ -198,6 +198,23 @@ any existing list of values.
 <function>FcPatternAddRange</function> are available since 2.11.91.
 @@
 
+@RET@		FcResult
+@FUNC@		FcPatternGetWithBinding
+@TYPE1@		FcPattern *			@ARG1@		p
+@TYPE2@		const char *			@ARG2@		object
+@TYPE3@		int%  	   			@ARG3@		id
+@TYPE4@		FcValue *			@ARG4@		v
+@TYPE5@		FcValueBinding *		@ARG5@		b
+@PURPOSE@	Return a value with binding from a pattern
+@DESC@
+Returns in <parameter>v</parameter> the <parameter>id</parameter>'th value
+and <parameter>b</parameter> binding for that associated with the property
+<parameter>object</parameter>.
+The Value returned is not a copy, but rather refers to the data stored
+within the pattern directly.  Applications must not free this value.
+@SINCE@		2.13.0
+@@
+
 @RET@		FcResult
 @FUNC@		FcPatternGet
 @TYPE1@		FcPattern *			@ARG1@		p

fontconfig/fontconfig.h

@@ -28,6 +28,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <stdarg.h>
+#include <limits.h>
 
 #if defined(__GNUC__) && (__GNUC__ >= 4)
 #define FC_ATTRIBUTE_SENTINEL(x) __attribute__((__sentinel__(0)))
@@ -236,6 +237,12 @@ typedef enum _FcResult {
     FcResultOutOfMemory
 } FcResult;
 
+typedef enum _FcValueBinding {
+    FcValueBindingWeak, FcValueBindingStrong, FcValueBindingSame,
+    /* to make sure sizeof (FcValueBinding) == 4 even with -fshort-enums */
+    FcValueBindingEnd = INT_MAX
+} FcValueBinding;
+
 typedef struct _FcPattern   FcPattern;
 
 typedef struct _FcLangSet   FcLangSet;
@@ -837,7 +844,10 @@ FcPatternAddWeak (FcPattern *p, const char *object, FcValue value, FcBool append
     
 FcPublic FcResult
 FcPatternGet (const FcPattern *p, const char *object, int id, FcValue *v);
-    
+
+FcPublic FcResult
+FcPatternGetWithBinding (const FcPattern *p, const char *object, int id, FcValue *v, FcValueBinding *b);
+
 FcPublic FcBool
 FcPatternDel (FcPattern *p, const char *object);
 

src/fcint.h

@@ -116,12 +116,6 @@ extern pfnSHGetFolderPathA pSHGetFolderPathA;
 
 FC_ASSERT_STATIC (sizeof (FcRef) == sizeof (int));
 
-typedef enum _FcValueBinding {
-    FcValueBindingWeak, FcValueBindingStrong, FcValueBindingSame,
-    /* to make sure sizeof (FcValueBinding) == 4 even with -fshort-enums */
-    FcValueBindingEnd = INT_MAX
-} FcValueBinding;
-
 #define FcStrdup(s) ((FcChar8 *) strdup ((const char *) (s)))
 #define FcFree(s) (free ((FcChar8 *) (s)))
 
@@ -999,6 +993,9 @@ FcPatternObjectAdd (FcPattern *p, FcObject object, FcValue value, FcBool append)
 FcPrivate FcBool
 FcPatternObjectAddWeak (FcPattern *p, FcObject object, FcValue value, FcBool append);
 
+FcPrivate FcResult
+FcPatternObjectGetWithBinding (const FcPattern *p, FcObject object, int id, FcValue *v, FcValueBinding *b);
+
 FcPrivate FcResult
 FcPatternObjectGet (const FcPattern *p, FcObject object, int id, FcValue *v);
 

src/fcpat.c

@@ -883,7 +883,7 @@ FcPatternAddRange (FcPattern *p, const char *object, const FcRange *r)
 }
 
 FcResult
-FcPatternObjectGet (const FcPattern *p, FcObject object, int id, FcValue *v)
+FcPatternObjectGetWithBinding (const FcPattern *p, FcObject object, int id, FcValue *v, FcValueBinding *b)
 {
     FcPatternElt   *e;
     FcValueListPtr l;
@@ -898,6 +898,8 @@ FcPatternObjectGet (const FcPattern *p, FcObject object, int id, FcValue *v)
 	if (!id)
 	{
 	    *v = FcValueCanonicalize(&l->value);
+	    if (b)
+		*b = l->binding;
 	    return FcResultMatch;
 	}
 	id--;
@@ -905,10 +907,22 @@ FcPatternObjectGet (const FcPattern *p, FcObject object, int id, FcValue *v)
     return FcResultNoId;
 }
 
+FcResult
+FcPatternObjectGet (const FcPattern *p, FcObject object, int id, FcValue *v)
+{
+    return FcPatternObjectGetWithBinding (p, object, id, v, NULL);
+}
+
+FcResult
+FcPatternGetWithBinding (const FcPattern *p, const char *object, int id, FcValue *v, FcValueBinding *b)
+{
+    return FcPatternObjectGetWithBinding (p, FcObjectFromName (object), id, v, b);
+}
+
 FcResult
 FcPatternGet (const FcPattern *p, const char *object, int id, FcValue *v)
 {
-    return FcPatternObjectGet (p, FcObjectFromName (object), id, v);
+    return FcPatternObjectGetWithBinding (p, FcObjectFromName (object), id, v, NULL);
 }
 
 FcResult