[gtk+] cssvalue: Add a custom value for strings

[Benjamin Otte <otte src gnome org>]

commit 7c75611bc262bbcc2425b06d0b9020340582a512
Author: Benjamin Otte <otte redhat com>
Date:   Fri Mar 30 02:48:05 2012 +0200

    cssvalue: Add a custom value for strings

 gtk/Makefile.am                |    2 +
 gtk/gtkcssstringvalue.c        |  128 ++++++++++++++++++++++++++++++++++++++++
 gtk/gtkcssstringvalueprivate.h |   38 ++++++++++++
 gtk/gtkcssvalue.c              |   18 ------
 gtk/gtkcssvalueprivate.h       |    2 -
 5 files changed, 168 insertions(+), 20 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index f359fe4..351545b 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -445,6 +445,7 @@ gtk_private_h_sources =		\
 	gtkcssselectorprivate.h	\
 	gtkcssshadowvalueprivate.h      \
 	gtkcssshorthandpropertyprivate.h \
+	gtkcssstringvalueprivate.h	\
 	gtkcssstylefuncsprivate.h \
 	gtkcssstylepropertyprivate.h \
 	gtkcssvalueprivate.h	\
@@ -647,6 +648,7 @@ gtk_base_c_sources = 		\
 	gtkcssrgbavalue.c	\
 	gtkcsssection.c 	\
 	gtkcssselector.c	\
+	gtkcssstringvalue.c	\
 	gtkcssshadowvalue.c	\
 	gtkcssshorthandproperty.c \
 	gtkcssshorthandpropertyimpl.c \
diff --git a/gtk/gtkcssstringvalue.c b/gtk/gtkcssstringvalue.c
new file mode 100644
index 0000000..16debf9
--- /dev/null
+++ b/gtk/gtkcssstringvalue.c
@@ -0,0 +1,128 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2011 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gtkcssstringvalueprivate.h"
+
+#include <string.h>
+
+struct _GtkCssValue {
+  GTK_CSS_VALUE_BASE
+  char *string;
+};
+
+static void
+gtk_css_value_string_free (GtkCssValue *value)
+{
+  g_slice_free (GtkCssValue, value);
+}
+
+static gboolean
+gtk_css_value_string_equal (const GtkCssValue *value1,
+                            const GtkCssValue *value2)
+{
+  return g_strcmp0 (value1->string, value2->string) == 0;
+}
+
+static void
+gtk_css_value_string_print (const GtkCssValue *value,
+                            GString           *str)
+{
+  char *string = value->string;
+  gsize len;
+
+  g_string_append_c (str, '"');
+
+  do {
+    len = strcspn (string, "\"\n\r\f");
+    g_string_append_len (str, string, len);
+    string += len;
+    switch (*string)
+      {
+      case '\0':
+        break;
+      case '\n':
+        g_string_append (str, "\\A ");
+        break;
+      case '\r':
+        g_string_append (str, "\\D ");
+        break;
+      case '\f':
+        g_string_append (str, "\\C ");
+        break;
+      case '\"':
+        g_string_append (str, "\\\"");
+        break;
+      case '\\':
+        g_string_append (str, "\\\\");
+        break;
+      default:
+        g_assert_not_reached ();
+        break;
+      }
+  } while (*string);
+
+  g_string_append_c (str, '"');
+}
+
+static const GtkCssValueClass GTK_CSS_VALUE_STRING = {
+  gtk_css_value_string_free,
+  gtk_css_value_string_equal,
+  gtk_css_value_string_print
+};
+
+GtkCssValue *
+_gtk_css_string_value_new (const char *string)
+{
+  return _gtk_css_string_value_new_take (g_strdup (string));
+}
+
+GtkCssValue *
+_gtk_css_string_value_new_take (char *string)
+{
+  GtkCssValue *result;
+
+  result = _gtk_css_value_new (GtkCssValue, &GTK_CSS_VALUE_STRING);
+  result->string = string;
+
+  return result;
+}
+
+GtkCssValue *
+_gtk_css_string_value_parse (GtkCssParser *parser)
+{
+  char *s;
+
+  g_return_val_if_fail (parser != NULL, NULL);
+
+  s = _gtk_css_parser_read_string (parser);
+  if (s == NULL)
+    return NULL;
+  
+  return _gtk_css_string_value_new_take (s);
+}
+
+const char *
+_gtk_css_string_value_get (const GtkCssValue *value)
+{
+  g_return_val_if_fail (value != NULL, NULL);
+  g_return_val_if_fail (value->class == &GTK_CSS_VALUE_STRING, NULL);
+
+  return value->string;
+}
+
diff --git a/gtk/gtkcssstringvalueprivate.h b/gtk/gtkcssstringvalueprivate.h
new file mode 100644
index 0000000..5338f02
--- /dev/null
+++ b/gtk/gtkcssstringvalueprivate.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright  2012 Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Alexander Larsson <alexl gnome org>
+ */
+
+#ifndef __GTK_CSS_STRING_VALUE_PRIVATE_H__
+#define __GTK_CSS_STRING_VALUE_PRIVATE_H__
+
+#include "gtkcssparserprivate.h"
+#include "gtkcsstypesprivate.h"
+#include "gtkcssvalueprivate.h"
+
+G_BEGIN_DECLS
+
+GtkCssValue *   _gtk_css_string_value_new           (const char             *string);
+GtkCssValue *   _gtk_css_string_value_new_take      (char                   *string);
+GtkCssValue *   _gtk_css_string_value_parse         (GtkCssParser           *parser);
+
+const char *    _gtk_css_string_value_get           (const GtkCssValue      *string);
+
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_STRING_VALUE_PRIVATE_H__ */
diff --git a/gtk/gtkcssvalue.c b/gtk/gtkcssvalue.c
index 0ab7f56..fa80c52 100644
--- a/gtk/gtkcssvalue.c
+++ b/gtk/gtkcssvalue.c
@@ -214,17 +214,6 @@ _gtk_css_value_new_from_double (double d)
 }
 
 GtkCssValue *
-_gtk_css_value_new_take_string (char *string)
-{
-  GtkCssValue *value;
-
-  value = gtk_css_value_new (G_TYPE_STRING);
-  value->u.ptr = string;
-
-  return value;
-}
-
-GtkCssValue *
 _gtk_css_value_new_take_strv (char **strv)
 {
   GtkCssValue *value;
@@ -515,13 +504,6 @@ _gtk_css_value_get_double (const GtkCssValue *value)
   return value->u.dbl;
 }
 
-const char *
-_gtk_css_value_get_string (const GtkCssValue *value)
-{
-  g_return_val_if_fail (_gtk_css_value_holds (value, G_TYPE_STRING), 0);
-  return value->u.ptr;
-}
-
 gpointer
 _gtk_css_value_dup_object (const GtkCssValue *value)
 {
diff --git a/gtk/gtkcssvalueprivate.h b/gtk/gtkcssvalueprivate.h
index 4fa5589..51a0941 100644
--- a/gtk/gtkcssvalueprivate.h
+++ b/gtk/gtkcssvalueprivate.h
@@ -76,7 +76,6 @@ GtkCssValue *_gtk_css_value_new_from_int              (gint
 GtkCssValue *_gtk_css_value_new_from_enum             (GType                       type,
                                                        gint                        val);
 GtkCssValue *_gtk_css_value_new_from_double           (double                      d);
-GtkCssValue *_gtk_css_value_new_take_string           (char                       *string);
 GtkCssValue *_gtk_css_value_new_take_strv             (char                      **strv);
 GtkCssValue *_gtk_css_value_new_from_boxed            (GType                       type,
                                                        gpointer                    boxed);
@@ -95,7 +94,6 @@ void         _gtk_css_value_init_gvalue               (const GtkCssValue
 int                             _gtk_css_value_get_int                    (const GtkCssValue *value);
 int                             _gtk_css_value_get_enum                   (const GtkCssValue *value);
 double                          _gtk_css_value_get_double                 (const GtkCssValue *value);
-const char *                    _gtk_css_value_get_string                 (const GtkCssValue *value);
 gpointer                        _gtk_css_value_dup_object                 (const GtkCssValue *value);
 gpointer                        _gtk_css_value_get_object                 (const GtkCssValue *value);
 gpointer                        _gtk_css_value_get_boxed                  (const GtkCssValue *value);