[evolution-data-server/openismus-work-3-8] EBookBackendSexp: Support regex query types.

[Tristan Van Berkom <tvb src gnome org>]

commit 4d148568d7f1e15534303a397a953a44604abf83
Author: Tristan Van Berkom <tristanvb openismus com>
Date:   Tue Apr 23 17:35:54 2013 +0900

    EBookBackendSexp: Support regex query types.

 addressbook/libedata-book/e-book-backend-sexp.c |   74 +++++++++++++++++++++++
 1 files changed, 74 insertions(+), 0 deletions(-)
---
diff --git a/addressbook/libedata-book/e-book-backend-sexp.c b/addressbook/libedata-book/e-book-backend-sexp.c
index 3cd220f..57956fd 100644
--- a/addressbook/libedata-book/e-book-backend-sexp.c
+++ b/addressbook/libedata-book/e-book-backend-sexp.c
@@ -850,6 +850,78 @@ func_eqphone_short (struct _ESExp *f,
 }
 
 static gboolean
+regex_helper (const gchar *ps1,
+             const gchar *ps2,
+             const gchar *region,
+             gboolean     normalize)
+{
+       const gchar *field_data = ps1;
+       const gchar *expression = ps2;
+       GRegex      *regex;
+       GError      *error = NULL;
+       gboolean     match = FALSE;
+
+       regex = g_regex_new (expression, 0, 0, &error);
+       if (!regex) {
+               g_warning ("Failed to parse regular expression '%s': %s",
+                          expression, error->message);
+               g_error_free (error);
+               return FALSE;
+       }
+
+       if (normalize) {
+               gchar *normal = e_util_utf8_normalize (field_data);
+
+               match = g_regex_match (regex, normal, 0, NULL);
+
+               g_free (normal);
+       } else
+               match = g_regex_match (regex, field_data, 0, NULL);
+
+       g_regex_unref (regex);
+
+       return match;
+}
+
+static gboolean
+regex_normal_helper (const gchar *ps1,
+                    const gchar *ps2,
+                    const gchar *region)
+{
+       return regex_helper (ps1, ps2, region, TRUE);
+}
+
+static gboolean
+regex_raw_helper (const gchar *ps1,
+                 const gchar *ps2,
+                 const gchar *region)
+{
+       return regex_helper (ps1, ps2, region, FALSE);
+}
+
+static ESExpResult *
+func_regex_normal (struct _ESExp *f,
+                  gint argc,
+                  struct _ESExpResult **argv,
+                  gpointer data)
+{
+       SearchContext *ctx = data;
+
+       return entry_compare (ctx, f, argc, argv, regex_normal_helper);
+}
+
+static ESExpResult *
+func_regex_raw (struct _ESExp *f,
+               gint argc,
+               struct _ESExpResult **argv,
+               gpointer data)
+{
+       SearchContext *ctx = data;
+
+       return entry_compare (ctx, f, argc, argv, regex_raw_helper);
+}
+
+static gboolean
 exists_helper (const gchar *ps1,
                const gchar *ps2,
                const gchar *region)
@@ -1037,6 +1109,8 @@ static struct {
        { "eqphone", func_eqphone, 0 },
        { "eqphone_national", func_eqphone_national, 0 },
        { "eqphone_short", func_eqphone_short, 0 },
+       { "regex_normal", func_regex_normal, 0 },
+       { "regex_raw", func_regex_raw, 0 },
        { "exists", func_exists, 0 },
        { "exists_vcard", func_exists_vcard, 0 },
 };