[gtk/demo-keywords: 5/6] gtk-demo: Support keywords for search

[Matthias Clasen <matthiasc src gnome org>]

commit 691261c71a7b61c1eaafbac18cf724ef91299c5d
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 13 11:37:23 2020 -0400

    gtk-demo: Support keywords for search
    
    Filter the sidebar on keywords that can be provided
    by the demos. We extract keywords from the doc comment
    at the top of each demo source by looking for words that
    look like class names. We also allow to specify keywords
    explicitly.

 demos/gtk-demo/geninclude.py | 52 ++++++++++++++++++++++++++++++--------------
 demos/gtk-demo/main.c        | 31 +++++++++++++++++++++++++-
 2 files changed, 66 insertions(+), 17 deletions(-)
---
diff --git a/demos/gtk-demo/geninclude.py b/demos/gtk-demo/geninclude.py
index bae6e57f47..2ebfaeb625 100755
--- a/demos/gtk-demo/geninclude.py
+++ b/demos/gtk-demo/geninclude.py
@@ -6,6 +6,22 @@ import re
 import os
 from collections import *
 
+def add_quotes(s):
+    return "\"" + s.lower() + "\""
+
+def wordify(s):
+    return s.strip().rstrip(".,;:")
+
+def is_keyword(s):
+    if s == "GTK":
+      return False
+    elif s.startswith(("Gtk", "Gdk", "Pango")):
+        return True
+    elif s.startswith("G") and s[1].isupper():
+        return True
+    else:
+        return False
+
 out_file = sys.argv[1]
 in_files = sys.argv[2:]
 
@@ -19,13 +35,14 @@ struct _DemoData
 {
   const char *name;
   const char *title;
+  const char **keywords;
   const char *filename;
   GDoDemoFunc func;
   DemoData *children;
 };
 """
 
-# Demo = namedtuple('Demo', ['name', 'title', 'file', 'func'])
+# Demo = namedtuple('Demo', ['name', 'title', 'keywords', 'file', 'func'])
 
 demos = []
 
@@ -34,14 +51,17 @@ for demo_file in in_files:
     demo_name = filename.replace(".c", "")
     with open(demo_file, 'r', encoding='utf-8') as f:
         title = f.readline().replace("/*", "").strip()
-
+        keywords = set()
+        line = f.readline().strip();
+        while not line.endswith('*/'):
+            if line.startswith("* #Keywords:"):
+                keywords = keywords.union(set(map(wordify, line.replace ("* #Keywords:", 
"").strip().split(","))))
+            else:
+                keywords = keywords.union(set(filter(is_keyword, map(wordify, line.replace ("* ", 
"").split()))))
+            line = f.readline().strip()
 
     file_output += "GtkWidget *do_" + demo_name + " (GtkWidget *do_widget);\n"
-    # demos += Demo(name = demo_name,
-                  # title = title,
-                  # file = demo_file,
-                  # func = "do_" + title)
-    demos.append((demo_name, title, filename, "do_" + demo_name, -1))
+    demos.append((demo_name, title, keywords, filename, "do_" + demo_name, -1))
 
 # Generate a List of "Parent names"
 parents = []
@@ -57,7 +77,7 @@ for demo in demos:
         if not parent_name in parents:
             parents.append(parent_name)
             parent_ids.append(parent_index)
-            demos.append(("NULL", parent_name, "NULL", "NULL", parent_index))
+            demos.append(("NULL", parent_name, set(), "NULL", "NULL", parent_index))
 
         parent_index = parent_index + 1
 
@@ -71,8 +91,7 @@ for parent in parents:
     for child in demos:
         if child[1].startswith(parent + "/"):
             title = child[1][child[1].rfind('/') + 1:]
-            file_output += "  { \"" + child[0] + "\", \"" + title + "\", \"" + child[2] + "\", " + child[3] 
+ ", NULL },\n"
-
+            file_output += "  { \"" + child[0] + "\", \"" + title + "\", " + "(const char*[]) {" + ", 
".join(list(map(add_quotes, child[2])) + ["NULL"]) + " }, \"" + child[3] + "\", " + child[4] + ", NULL },\n"
 
     file_output += "  { NULL }\n};\n"
     i = i + 1
@@ -86,9 +105,10 @@ for demo in demos:
     # Do not generate one of these for demos with a parent demo
     if "/" not in demo[1]:
         child_array = "NULL"
-        name = demo[0];
-        title = demo[1];
-        file = demo[2]
+        name = demo[0]
+        title = demo[1]
+        keywords = demo[2]
+        file = demo[3]
         if name != "NULL":
             name = "\"" + name + "\""
         if title != "NULL":
@@ -96,9 +116,9 @@ for demo in demos:
         if file != "NULL":
             file = "\"" + file + "\""
 
-        if demo[4] != -1:
-            child_array = "child" + str(demo[4])
-        file_output += "  { " + name + ", " + title + ", " + file + ", " + demo[3] + ", " + child_array + " 
},\n"
+        if demo[5] != -1:
+            child_array = "child" + str(demo[5])
+        file_output += "  { " + name + ", " + title + ", " + "(const char*[]) {" + ", 
".join(list(map(add_quotes, keywords)) + ["NULL"]) + " }, " + file + ", " + demo[4] + ", " + child_array + " 
},\n"
 
 file_output += "  { NULL }\n};\n"
 
diff --git a/demos/gtk-demo/main.c b/demos/gtk-demo/main.c
index 3011c3e890..40789d773e 100644
--- a/demos/gtk-demo/main.c
+++ b/demos/gtk-demo/main.c
@@ -28,6 +28,7 @@ struct _GtkDemo
 
   const char *name;
   const char *title;
+  const char **keywords;
   const char *filename;
   GDoDemoFunc func;
   GListModel *children_model;
@@ -38,6 +39,7 @@ enum {
   PROP_FILENAME,
   PROP_NAME,
   PROP_TITLE,
+  PROP_KEYWORDS,
 
   N_PROPS
 };
@@ -70,6 +72,10 @@ gtk_demo_get_property (GObject    *object,
       g_value_set_string (value, self->title);
       break;
 
+    case PROP_KEYWORDS:
+      g_value_set_boxed (value, self->keywords);
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
       break;
@@ -100,6 +106,12 @@ static void gtk_demo_class_init (GtkDemoClass *klass)
                          "title",
                          NULL,
                          G_PARAM_READABLE);
+  properties[PROP_KEYWORDS] =
+    g_param_spec_string ("keywords",
+                         "keywords",
+                         "keywords",
+                         NULL,
+                         G_PARAM_READABLE);
 
   g_object_class_install_properties (gobject_class, N_PROPS, properties);
 }
@@ -691,6 +703,21 @@ filter_demo (GtkDemo *demo)
       if (g_str_match_string (search_needle[i], demo->title, TRUE))
         continue;
 
+      if (demo->keywords)
+        {
+          int j;
+          gboolean found = FALSE;
+
+          for (j = 0; !found && demo->keywords[j]; j++)
+            {
+              if (strstr (demo->keywords[j], search_needle[i]))
+                found = TRUE;
+            }
+
+          if (found)
+            continue;
+        }
+
       return FALSE;
     }
 
@@ -761,7 +788,7 @@ demo_search_changed_cb (GtkSearchEntry *entry,
   g_clear_pointer (&search_needle, g_strfreev);
 
   if (text && *text)
-    search_needle = g_strsplit (text, " ", 0);
+    search_needle = g_str_tokenize_and_fold (text, NULL, NULL);
 
   gtk_filter_changed (filter, GTK_FILTER_CHANGE_DIFFERENT);
 }
@@ -779,6 +806,7 @@ create_demo_model (void)
 
       d->name = demo->name;
       d->title = demo->title;
+      d->keywords = demo->keywords;
       d->filename = demo->filename;
       d->func = demo->func;
 
@@ -794,6 +822,7 @@ create_demo_model (void)
 
               child->name = children->name;
               child->title = children->title;
+              child->keywords = children->keywords;
               child->filename = children->filename;
               child->func = children->func;