[PATCH v2 1/3] search: Separately report matching and non-matching authors.

[David Edmondson]

On Sun, Jan 18 2015, Mark Walters wrote:
> On Fri, 24 Oct 2014, David Edmondson <dme at dme.org> wrote:
>> In addition to the 'authors' attribute of each search result, include
>> 'authors_matched' and 'authors_non_matched' attributes. Both
>> attributes are always included and are formatted as a list of
>> authors. If there are no matching authors, the 'authors_non_matched'
>> attribute is set to the empty list.
>
> Hi
>
> Sorry to be so slow reviewing this. Would it be possible to do the
> matching/non-matching stuff in lib/thread.cc and just call that from
> notmuch-search.c? I guess you would need to add a matched_authors, and
> unmatched_authors string to the notmuch_thread struct.
>
> Doing this in search.c seems to redo things that the thread code is
> already doing but maybe I don't really know this code.

Is that different to what I did originally? Austin suggested the
approach in this version (id:20141024124016.GG7970 at csail.mit.edu),
unless I misunderstood him.

> Best wishes
>
> Mark
>
>> ---
>>  notmuch-search.c | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>  1 file changed, 105 insertions(+)
>>
>> diff --git a/notmuch-search.c b/notmuch-search.c
>> index bc9be45..18c3b20 100644
>> --- a/notmuch-search.c
>> +++ b/notmuch-search.c
>> @@ -22,6 +22,8 @@
>>  #include "sprinter.h"
>>  #include "string-util.h"
>>  
>> +#include <glib.h>
>> +
>>  typedef enum {
>>      OUTPUT_SUMMARY,
>>      OUTPUT_THREADS,
>> @@ -69,6 +71,105 @@ get_thread_query (notmuch_thread_t *thread,
>>      return 0;
>>  }
>>  
>> +/* Return a more pleasent rendering of the mail address
>> + * `nasty_author'. */
>> +static const char *
>> +_nice_author (void *ctx, const char *nasty_author)
>> +{
>> +    const char *nice_author = NULL;
>> +
>> +    InternetAddressList *list = internet_address_list_parse_string (nasty_author);
>> +    if (list) {
>> +	InternetAddress *address = internet_address_list_get_address (list, 0);
>> +	if (address) {
>> +	    nice_author = internet_address_get_name (address);
>> +	    if (nice_author == NULL) {
>> +		InternetAddressMailbox *mailbox = INTERNET_ADDRESS_MAILBOX (address);
>> +		nice_author = internet_address_mailbox_get_addr (mailbox);
>> +	    }
>> +	}
>> +	/* Duplicate the string before `g_object_unref' destroys
>> +	 * it. */
>> +	if (nice_author)
>> +	    nice_author = talloc_strdup (ctx, nice_author);
>> +
>> +	g_object_unref (G_OBJECT (list));
>> +    }
>> +
>> +    if (nice_author)
>> +	return nice_author;
>> +    else
>> +	return nasty_author;
>> +}
>> +
>> +static int
>> +_enumerate_authors (sprinter_t *format,
>> +		 notmuch_thread_t *thread)
>> +{
>> +    notmuch_messages_t *messages;
>> +    GHashTable *matched_hash = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL);
>> +    GHashTable *unmatched_hash = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL);
>> +    GPtrArray *matched_array = g_ptr_array_new ();
>> +    GPtrArray *unmatched_array = g_ptr_array_new ();
>> +
>> +    /* Iterate over the messages in the thread collecting matching and
>> +     * non-matching authors. */
>> +    for (messages = notmuch_thread_get_messages (thread);
>> +	 notmuch_messages_valid (messages);
>> +	 notmuch_messages_move_to_next (messages))
>> +    {
>> +	notmuch_message_t *message = notmuch_messages_get (messages);
>> +	const char *author = _nice_author (thread, notmuch_message_get_header (message, "from"));
>> +
>> +	if (author) {
>> +	    GHashTable *hash;
>> +	    GPtrArray *array;
>> +
>> +	    if (notmuch_message_get_flag (message, NOTMUCH_MESSAGE_FLAG_MATCH)) {
>> +		hash = matched_hash;
>> +		array = matched_array;
>> +	    } else {
>> +		hash = unmatched_hash;
>> +		array = unmatched_array;
>> +	    }
>> +
>> +	    if (!g_hash_table_lookup_extended (hash, author, NULL, NULL)) {
>> +		char *copy = talloc_strdup (thread, author);
>> +		g_hash_table_insert (hash, copy, NULL);
>> +		g_ptr_array_add (array, (char *) copy);
>> +	    }
>> +	}
>> +    }
>> +
>> +    /* Output the matched authors. */
>> +    unsigned int i;
>> +    format->map_key (format, "authors_matched");
>> +    format->begin_list (format);
>> +    for (i = 0; i < matched_array->len; i++)
>> +	format->string (format, (char *) g_ptr_array_index( matched_array, i));
>> +    format->end (format);
>> +
>> +    /* Output the non-matched authors, but not if they were seen
>> +     * already in the matched authors list. */
>> +    format->map_key (format, "authors_non_matched");
>> +    format->begin_list (format);
>> +    for (i = 0; i < unmatched_array->len; i++) {
>> +	char *author = (char *) g_ptr_array_index( unmatched_array, i);
>> +
>> +	if (!g_hash_table_lookup_extended (matched_hash, author, NULL, NULL))
>> +	    format->string (format, author);
>> +    }
>> +    format->end (format);
>> +
>> +    g_hash_table_unref (matched_hash);
>> +    g_hash_table_unref (unmatched_hash);
>> +
>> +    g_ptr_array_free (matched_array, TRUE);
>> +    g_ptr_array_free (unmatched_array, TRUE);
>> +
>> +    return 0;
>> +}
>> +
>>  static int
>>  do_search_threads (sprinter_t *format,
>>  		   notmuch_query_t *query,
>> @@ -152,6 +253,10 @@ do_search_threads (sprinter_t *format,
>>  		format->integer (format, total);
>>  		format->map_key (format, "authors");
>>  		format->string (format, authors);
>> +		if (_enumerate_authors (format, thread) < 0) {
>> +		    fprintf (stderr, "Out of memory\n");
>> +		    return 1;
>> +		}
>>  		format->map_key (format, "subject");
>>  		format->string (format, subject);
>>  		if (notmuch_format_version >= 2) {
>> -- 
>> 2.1.1
>>
>> _______________________________________________
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