Move pango_language_includes_script() from pango-script.c to

2007-05-09  Behdad Esfahbod  <behdad@gnome.org>

        * pango/pango-language.c (script_for_lang_compare),
        (pango_language_includes_script):
        * pango/pango-script.c: Move pango_language_includes_script() from
        pango-script.c to pango-language.c that it belongs.


svn path=/trunk/; revision=2270

2 files changed, 92 insertions, 88 deletions

diff --git a/pango/pango-language.c b/pango/pango-language.c
index a5e32369..885bd564 100644
--- a/pango/pango-language.c
+++ b/pango/pango-language.c
@@ -380,3 +380,95 @@ pango_language_get_sample_string (PangoLanguage *language)
 
   return result;
 }
+
+#include "pango-script-lang-table.h"
+
+/* The fact that this comparison function works is dependent
+ * on a property of the pango_script_lang_table which accidental rather
+ * than inherent.
+ *
+ * The property is if we take any element in the table and suffix it
+ * <elem>-<suffix> then that must strcmp() between any elements
+ * preceding the element in the table and any element following in the
+ * table. So, if we had something like:
+ *
+ * 'zh'
+ *' zh-cn'
+ *
+ * in the table we would have a problem since 'zh-tw' follows 'zh-cn'.
+ * On the other hand:
+ *
+ * 'zh'
+ * 'zha'
+ *
+ * Works because 'zh-tw' precedes 'zha'.
+ */
+static int
+script_for_lang_compare (gconstpointer key,
+			 gconstpointer member)
+{
+  PangoLanguage *lang = (PangoLanguage *)key;
+  const PangoScriptForLang *script_for_lang = member;
+
+  if (pango_language_matches (lang, script_for_lang->lang))
+    return 0;
+  else
+    return strcmp (pango_language_to_string (lang),
+		   script_for_lang->lang);
+}
+
+/**
+ * pango_language_includes_script:
+ * @language: a #PangoLanguage
+ * @script: a #PangoScript
+ *
+ * Determines if @script is one of the scripts used to
+ * write @language. The returned value is conservative;
+ * if nothing is known about the language tag @language,
+ * %TRUE will be returned, since, as far as Pango knows,
+ * @script might be used to write @language.
+ *
+ * This routine is used in Pango's itemization process when
+ * determining if a supplied language tag is relevant to
+ * a particular section of text. It probably is not useful for
+ * applications in most circumstances.
+ *
+ * Return value: %TRUE if @script is one of the scripts used
+ * to write @language, or if nothing is known about @language.
+ *
+ * Since: 1.4
+ **/
+gboolean
+pango_language_includes_script (PangoLanguage *language,
+				PangoScript    script)
+{
+  PangoScriptForLang *script_for_lang;
+  unsigned int j;
+
+  g_return_val_if_fail (language != NULL, FALSE);
+
+#define REAL_SCRIPT(script) \
+  ((script) > PANGO_SCRIPT_INHERITED)
+
+  if (!REAL_SCRIPT (script))
+    return TRUE;
+
+  /* This bsearch could be optimized to occur only once if
+   * we store the pointer to the PangoScriptForLang in the
+   * same block as the string value for the PangoLanguage.
+   */
+  script_for_lang = bsearch (pango_language_to_string (language),
+			     pango_script_for_lang,
+			     G_N_ELEMENTS (pango_script_for_lang),
+			     sizeof (PangoScriptForLang),
+			     script_for_lang_compare);
+  if (!script_for_lang)
+    return TRUE;
+
+  for (j = 0; j < G_N_ELEMENTS (script_for_lang->scripts); j++)
+    if (script_for_lang->scripts[j] == script)
+      return TRUE;
+
+  return FALSE;
+}
+
diff --git a/pango/pango-script.c b/pango/pango-script.c
index 1ee63055..77cc6a4e 100644
--- a/pango/pango-script.c
+++ b/pango/pango-script.c
@@ -380,94 +380,6 @@ pango_script_iter_next (PangoScriptIter *iter)
  * End of code from ICU
  **********************************************************/
 
-#include "pango-script-lang-table.h"
-
-/* The fact that this comparison function works is dependent
- * on a property of the pango_script_lang_table which accidental rather
- * than inherent.
- *
- * The property is if we take any element in the table and suffix it
- * <elem>-<suffix> then that must strcmp() between any elements
- * preceding the element in the table and any element following in the
- * table. So, if we had something like:
- *
- * 'zh'
- *' zh-cn'
- *
- * in the table we would have a problem since 'zh-tw' follows 'zh-cn'.
- * On the other hand:
- *
- * 'zh'
- * 'zha'
- *
- * Works because 'zh-tw' precedes 'zha'.
- */
-static int
-script_for_lang_compare (gconstpointer key,
-			 gconstpointer member)
-{
-  PangoLanguage *lang = (PangoLanguage *)key;
-  const PangoScriptForLang *script_for_lang = member;
-
-  if (pango_language_matches (lang, script_for_lang->lang))
-    return 0;
-  else
-    return strcmp (pango_language_to_string (lang),
-		   script_for_lang->lang);
-}
-
-/**
- * pango_language_includes_script:
- * @language: a #PangoLanguage
- * @script: a #PangoScript
- *
- * Determines if @script is one of the scripts used to
- * write @language. The returned value is conservative;
- * if nothing is known about the language tag @language,
- * %TRUE will be returned, since, as far as Pango knows,
- * @script might be used to write @language.
- *
- * This routine is used in Pango's itemization process when
- * determining if a supplied language tag is relevant to
- * a particular section of text. It probably is not useful for
- * applications in most circumstances.
- *
- * Return value: %TRUE if @script is one of the scripts used
- * to write @language, or if nothing is known about @language.
- *
- * Since: 1.4
- **/
-gboolean
-pango_language_includes_script (PangoLanguage *language,
-				PangoScript    script)
-{
-  PangoScriptForLang *script_for_lang;
-  unsigned int j;
-
-  g_return_val_if_fail (language != NULL, FALSE);
-
-  if (!REAL_SCRIPT (script))
-    return TRUE;
-
-  /* This bsearch could be optimized to occur only once if
-   * we store the pointer to the PangoScriptForLang in the
-   * same block as the string value for the PangoLanguage.
-   */
-  script_for_lang = bsearch (pango_language_to_string (language),
-			     pango_script_for_lang,
-			     G_N_ELEMENTS (pango_script_for_lang),
-			     sizeof (PangoScriptForLang),
-			     script_for_lang_compare);
-  if (!script_for_lang)
-    return TRUE;
-
-  for (j = 0; j < G_N_ELEMENTS (script_for_lang->scripts); j++)
-    if (script_for_lang->scripts[j] == script)
-      return TRUE;
-
-  return FALSE;
-}
-
 /**
  * pango_script_get_sample_language:
  * @script: a #PangoScript