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+From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>\r
+To: Notmuch Mail <notmuch@notmuchmail.org>\r
+Subject: [PATCH v4 5/7] Introduce _notmuch_message_has_term()\r
+Date: Fri, 8 Apr 2016 22:54:50 -0300\r
+Message-Id: <1460166892-29721-5-git-send-email-dkg@fifthhorseman.net>\r
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+References: <1459445693-3900-1-git-send-email-dkg@fifthhorseman.net>\r
+ <1460166892-29721-1-git-send-email-dkg@fifthhorseman.net>\r
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+\r
+It can be useful to easily tell if a given message has a given term\r
+associated with it.\r
+---\r
+ lib/message.cc | 35 +++++++++++++++++++++++++++++++++++\r
+ lib/notmuch-private.h | 6 ++++++\r
+ 2 files changed, 41 insertions(+)\r
+\r
+diff --git a/lib/message.cc b/lib/message.cc\r
+index 435b78a..2399ab3 100644\r
+--- a/lib/message.cc\r
++++ b/lib/message.cc\r
+@@ -1217,6 +1217,41 @@ _notmuch_message_remove_term (notmuch_message_t *message,\r
+ return NOTMUCH_PRIVATE_STATUS_SUCCESS;\r
+ }\r
+ \r
++notmuch_private_status_t\r
++_notmuch_message_has_term (notmuch_message_t *message,\r
++ const char *prefix_name,\r
++ const char *value,\r
++ notmuch_bool_t *result)\r
++{\r
++ char *term;\r
++ notmuch_bool_t out = FALSE;\r
++ notmuch_private_status_t status = NOTMUCH_PRIVATE_STATUS_SUCCESS;\r
++\r
++ if (value == NULL)\r
++ return NOTMUCH_PRIVATE_STATUS_NULL_POINTER;\r
++\r
++ term = talloc_asprintf (message, "%s%s",\r
++ _find_prefix (prefix_name), value);\r
++\r
++ if (strlen (term) > NOTMUCH_TERM_MAX)\r
++ return NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG;\r
++\r
++ try {\r
++ /* Look for the exact term */\r
++ Xapian::TermIterator i = message->doc.termlist_begin ();\r
++ i.skip_to (term);\r
++ if (i != message->doc.termlist_end () &&\r
++ !strcmp ((*i).c_str (), term))\r
++ out = TRUE;\r
++ } catch (Xapian::Error &error) {\r
++ status = NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION;\r
++ }\r
++ talloc_free (term);\r
++\r
++ *result = out;\r
++ return status;\r
++}\r
++\r
+ notmuch_status_t\r
+ notmuch_message_add_tag (notmuch_message_t *message, const char *tag)\r
+ {\r
+diff --git a/lib/notmuch-private.h b/lib/notmuch-private.h\r
+index d95bf31..9280797 100644\r
+--- a/lib/notmuch-private.h\r
++++ b/lib/notmuch-private.h\r
+@@ -280,6 +280,12 @@ _notmuch_message_remove_term (notmuch_message_t *message,\r
+ const char *value);\r
+ \r
+ notmuch_private_status_t\r
++_notmuch_message_has_term (notmuch_message_t *message,\r
++ const char *prefix_name,\r
++ const char *value,\r
++ notmuch_bool_t *result);\r
++\r
++notmuch_private_status_t\r
+ _notmuch_message_gen_terms (notmuch_message_t *message,\r
+ const char *prefix_name,\r
+ const char *text);\r
+-- \r
+2.8.0.rc3\r
+\r