[var] Rename var_coord to variation

Looks much better.

src/hb-common.cc

@@ -608,7 +608,7 @@ hb_version_atleast (unsigned int major,
 
 
 
-/* hb_feature_t and hb_var_coord_t */
+/* hb_feature_t and hb_variation_t */
 
 static bool
 parse_space (const char **pp, const char *end)
@@ -880,59 +880,59 @@ hb_feature_to_string (hb_feature_t *feature,
   buf[len] = '\0';
 }
 
-/* hb_var_coord_t */
+/* hb_variation_t */
 
 static bool
-parse_var_coord_value (const char **pp, const char *end, hb_var_coord_t *var_coord)
+parse_variation_value (const char **pp, const char *end, hb_variation_t *variation)
 {
   parse_char (pp, end, '='); /* Optional. */
-  return parse_float (pp, end, &var_coord->value);
+  return parse_float (pp, end, &variation->value);
 }
 
 static bool
-parse_one_var_coord (const char **pp, const char *end, hb_var_coord_t *var_coord)
+parse_one_variation (const char **pp, const char *end, hb_variation_t *variation)
 {
-  return parse_tag (pp, end, &var_coord->tag) &&
-	 parse_var_coord_value (pp, end, var_coord) &&
+  return parse_tag (pp, end, &variation->tag) &&
+	 parse_variation_value (pp, end, variation) &&
 	 parse_space (pp, end) &&
 	 *pp == end;
 }
 
 hb_bool_t
-hb_var_coord_from_string (const char *str, int len,
-			  hb_var_coord_t *var_coord)
+hb_variation_from_string (const char *str, int len,
+			  hb_variation_t *variation)
 {
-  hb_var_coord_t coord;
+  hb_variation_t var;
 
   if (len < 0)
     len = strlen (str);
 
-  if (likely (parse_one_var_coord (&str, str + len, &coord)))
+  if (likely (parse_one_variation (&str, str + len, &var)))
   {
-    if (var_coord)
-      *var_coord = coord;
+    if (variation)
+      *variation = var;
     return true;
   }
 
-  if (var_coord)
-    memset (var_coord, 0, sizeof (*var_coord));
+  if (variation)
+    memset (variation, 0, sizeof (*variation));
   return false;
 }
 
 void
-hb_var_coord_to_string (hb_var_coord_t *var_coord,
+hb_variation_to_string (hb_variation_t *variation,
 			char *buf, unsigned int size)
 {
   if (unlikely (!size)) return;
 
   char s[128];
   unsigned int len = 0;
-  hb_tag_to_string (var_coord->tag, s + len);
+  hb_tag_to_string (variation->tag, s + len);
   len += 4;
   while (len && s[len - 1] == ' ')
     len--;
   s[len++] = '=';
-  len += MAX (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%g", var_coord->value));
+  len += MAX (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%g", variation->value));
 
   assert (len < ARRAY_LENGTH (s));
   len = MIN (len, size - 1);

src/hb-common.h

@@ -379,17 +379,17 @@ HB_EXTERN void
 hb_feature_to_string (hb_feature_t *feature,
 		      char *buf, unsigned int size);
 
-typedef struct hb_var_coord_t {
+typedef struct hb_variation_t {
   hb_tag_t tag;
   float    value;
-} hb_var_coord_t;
+} hb_variation_t;
 
 HB_EXTERN hb_bool_t
-hb_var_coord_from_string (const char *str, int len,
-			  hb_var_coord_t *var_coord);
+hb_variation_from_string (const char *str, int len,
+			  hb_variation_t *variation);
 
 HB_EXTERN void
-hb_var_coord_to_string (hb_var_coord_t *var_coord,
+hb_variation_to_string (hb_variation_t *variation,
 			char *buf, unsigned int size);
 
 

src/hb-font.cc

@@ -1552,14 +1552,14 @@ _hb_font_adopt_var_coords_normalized (hb_font_t *font,
 }
 
 void
-hb_font_set_var_coords (hb_font_t *font,
-			const hb_var_coord_t *coords,
-			unsigned int coords_length)
+hb_font_set_variations (hb_font_t *font,
+			const hb_variation_t *variations,
+			unsigned int variations_length)
 {
   if (font->immutable)
     return;
 
-  if (!coords_length)
+  if (!variations_length)
   {
     hb_font_set_var_coords_normalized (font, NULL, 0);
     return;
@@ -1567,18 +1567,18 @@ hb_font_set_var_coords (hb_font_t *font,
 
   hb_face_t *face = font->face;
 
-  unsigned int length = hb_ot_var_get_axis_count (face);
+  unsigned int coords_length = hb_ot_var_get_axis_count (face);
 
-  int *normalized = length ? (int *) calloc (length, sizeof (int)) : NULL;
-  if (unlikely (length && !normalized))
+  int *normalized = coords_length ? (int *) calloc (coords_length, sizeof (int)) : NULL;
+  if (unlikely (coords_length && !normalized))
     return;
 
   /* normalized is filled with zero already. */
-  for (unsigned int i = 0; i < coords_length; i++)
+  for (unsigned int i = 0; i < variations_length; i++)
   {
     unsigned int axis_index;
-    if (hb_ot_var_find_axis (face, coords[i].tag, &axis_index, NULL))
-      normalized[axis_index] = hb_ot_var_normalize_axis_value (face, axis_index, coords[i].value);
+    if (hb_ot_var_find_axis (face, variations[i].tag, &axis_index, NULL))
+      normalized[axis_index] = hb_ot_var_normalize_axis_value (face, axis_index, variations[i].value);
   }
 
   _hb_font_adopt_var_coords_normalized (font, normalized, coords_length);

src/hb-font.h

@@ -604,9 +604,9 @@ hb_font_get_ppem (hb_font_t *font,
 		  unsigned int *y_ppem);
 
 HB_EXTERN void
-hb_font_set_var_coords (hb_font_t *font,
-			const hb_var_coord_t *coords,
-			unsigned int coords_length);
+hb_font_set_variations (hb_font_t *font,
+			const hb_variation_t *variations,
+			unsigned int variations_length);
 
 HB_EXTERN void
 hb_font_set_var_coords_design (hb_font_t *font,