X-Git-Url: http://git.maemo.org/git/?p=modest;a=blobdiff_plain;f=src%2Fmodest-text-utils.c;h=db00b31447a5bec21178302879162fd0f7375503;hp=f2d9242509db8429ca6964b9d5762950d37ce5c7;hb=a31e3b7e2d3779420c9e0b62fc0ffba214137f0e;hpb=fa8f6bccc4b6a4f8725848ac8f2c655603266e59

diff --git a/src/modest-text-utils.c b/src/modest-text-utils.c
index f2d9242..db00b31 100644
--- a/src/modest-text-utils.c
+++ b/src/modest-text-utils.c
@@ -63,8 +63,6 @@
  * will hang modest
  */
 #define HYPERLINKIFY_MAX_LENGTH (1024*50)
-#define SIGNATURE_MARKER "--"
-
 
 /*
  * we need these regexps to find URLs in plain text e-mails
@@ -109,14 +107,14 @@ struct _url_match_t {
 
 /* note: match MARK_AMP_URI_STR as well, because after txt->html, a '&' will look like $(MARK_AMP_URI_STR)"amp;" */
 #define MAIL_VIEWER_URL_MATCH_PATTERNS  {				\
-	{ "(file|rtsp|http|ftp|https|mms|mmsh|rtsp|rdp|lastfm)://[-a-z0-9_$.+!*(),;:@%=?/~#" MARK_AMP_URI_STR \
-			"]+[-a-z0-9_$%" MARK_AMP_URI_STR "=?/~#]",	\
+	{ "(feed:|)(file|rtsp|http|ftp|https|mms|mmsh|webcal|feed|rtsp|rdp|lastfm|sip)://[-a-z0-9_$.+!*(),;:@%=\?/~#&" MARK_AMP_URI_STR \
+			"]+[-a-z0-9_$%&" MARK_AMP_URI_STR "=?/~#]",	\
 	  NULL, NULL },\
 	{ "www\\.[-a-z0-9_$.+!*(),;:@%=?/~#" MARK_AMP_URI_STR "]+[-a-z0-9_$%" MARK_AMP_URI_STR "=?/~#]",\
 			NULL, "http://" },				\
 	{ "ftp\\.[-a-z0-9_$.+!*(),;:@%=?/~#" MARK_AMP_URI_STR "]+[-a-z0-9_$%" MARK_AMP_URI_STR "=?/~#]",\
 	  NULL, "ftp://" },\
-	{ "(jabberto|voipto|sipto|sip|chatto|xmpp):[-_a-z@0-9.+]+", \
+	{ "(jabberto|voipto|sipto|sip|chatto|skype|xmpp):[-_a-z@0-9.+]+", \
 	   NULL, NULL},						    \
 	{ "mailto:[-_a-z0-9.\\+]+@[-_a-z0-9.]+",		    \
 	  NULL, NULL},\
@@ -165,6 +163,8 @@ static gchar*   modest_text_utils_quote_html       (const gchar *text,
 						    GList *attachments,
 						    int limit);
 static gchar*   get_email_from_address (const gchar *address);
+static void     remove_extra_spaces (gchar *string);
+
 
 
 /* ******************************************************************* */
@@ -216,7 +216,7 @@ modest_text_utils_cite (const gchar *text,
 	if (!signature) {
 		tmp_sig = g_strdup (text);
 	} else {
-		tmp_sig = g_strconcat (text, "\n", SIGNATURE_MARKER, "\n", signature, NULL);
+		tmp_sig = g_strconcat (text, "\n", MODEST_TEXT_UTILS_SIGNATURE_MARKER, "\n", signature, NULL);
 	}
 
 	if (strcmp (content_type, "text/html") == 0) {
@@ -286,6 +286,8 @@ modest_text_utils_strftime(char *s, gsize max, const char *fmt, time_t timet)
 	   garbage in the s variable */
 	if (s)
 		s[0] = '\0';
+	else
+		return 0;
 
 	/* does not work on old maemo glib: 
 	 *   g_date_set_time_t (&date, timet);
@@ -316,7 +318,23 @@ modest_text_utils_derived_subject (const gchar *subject, const gchar *prefix)
 			tmp += prefix_len;
 			tmp = g_strchug (tmp);
 		} else {
-			break;
+			gchar *prefix_down, *tmp_down;
+
+			/* We need this to properly check the cases of
+			   some clients adding FW: instead of Fw: for
+			   example */
+			prefix_down = g_utf8_strdown (prefix, -1);
+			tmp_down = g_utf8_strdown (tmp, -1);
+			if (g_str_has_prefix (tmp_down, prefix_down)) {
+				tmp += prefix_len;
+				tmp = g_strchug (tmp);
+				g_free (prefix_down);
+				g_free (tmp_down);
+			} else {
+				g_free (prefix_down);
+				g_free (tmp_down);
+				break;
+			}
 		}
 	} while (tmp);
 
@@ -326,6 +344,39 @@ modest_text_utils_derived_subject (const gchar *subject, const gchar *prefix)
 	return retval;
 }
 
+
+/* Performs a case-insensitive strstr for ASCII strings */
+static const gchar *
+ascii_stristr(const gchar *haystack, const gchar *needle)
+{
+	int needle_len;
+	int haystack_len;
+	const gchar *pos;
+	const gchar *max_pos;
+
+	if (haystack == NULL || needle == NULL) {
+		return haystack;  /* as in strstr */
+	}
+
+	needle_len = strlen(needle);
+
+	if (needle_len == 0) {
+		return haystack;  /* as in strstr */
+	}
+
+	haystack_len = strlen(haystack);
+	max_pos = haystack + haystack_len - needle_len;
+
+	for (pos = haystack; pos <= max_pos; pos++) {
+		if (g_ascii_strncasecmp (pos, needle, needle_len) == 0) {
+			return pos;
+		}
+	}
+
+	return NULL;
+}
+
+
 gchar*
 modest_text_utils_remove_address (const gchar *address_list, const gchar *address)
 {
@@ -334,26 +385,26 @@ modest_text_utils_remove_address (const gchar *address_list, const gchar *addres
 	gchar *email_address;
 
 	g_return_val_if_fail (address_list, NULL);
-	
+
 	if (!address)
 		return g_strdup (address_list);
 
 	email_address = get_email_from_address (address);
-	
+
 	/* search for substring */
-	if (!strstr ((const char *) address_list, (const char *) email_address)) {
+	if (!ascii_stristr ((const char *) address_list, (const char *) email_address)) {
 		g_free (email_address);
 		return g_strdup (address_list);
 	}
 
 	dup = g_strdup (address_list);
 	filtered_emails = g_string_new (NULL);
-	
+
 	token = strtok_r (dup, ",", &ptr);
 
 	while (token != NULL) {
 		/* Add to list if not found */
-		if (!strstr ((const char *) token, (const char *) email_address)) {
+		if (!ascii_stristr ((const char *) token, (const char *) email_address)) {
 			if (filtered_emails->len == 0)
 				g_string_append_printf (filtered_emails, "%s", g_strstrip (token));
 			else
@@ -416,6 +467,9 @@ modest_text_utils_remove_duplicate_addresses (const gchar *address_list)
 	g_slist_foreach (addresses, (GFunc)g_free, NULL);
 	g_slist_free (addresses);
 
+	if (new_list == NULL)
+		new_list = g_strdup ("");
+
 	return new_list;
 }
 
@@ -435,7 +489,7 @@ modest_text_utils_convert_buffer_to_html_start (GString *html, const gchar *data
 		guchar kar = data[i];
 		
 		if (space_seen && kar != ' ') {
-			g_string_append_c (html, ' ');
+			g_string_append (html, " ");
 			space_seen = FALSE;
 		}
 		
@@ -472,7 +526,6 @@ modest_text_utils_convert_buffer_to_html_start (GString *html, const gchar *data
 			break_dist = 0;
 			if (space_seen) { /* second space in a row */
 				g_string_append (html, "&nbsp; ");
-				space_seen = FALSE;
 			} else
 				space_seen = TRUE;
 			break;
@@ -553,59 +606,52 @@ modest_text_utils_convert_to_html_body (const gchar *data, gssize n, gboolean hy
 void
 modest_text_utils_get_addresses_indexes (const gchar *addresses, GSList **start_indexes, GSList **end_indexes)
 {
-	gchar *current, *start, *last_blank;
-	gint start_offset = 0, current_offset = 0;
+	GString *str;
+	gchar *start, *cur;
+
+	if (!addresses)
+		return;
 
-	g_return_if_fail (start_indexes != NULL);
-	g_return_if_fail (end_indexes != NULL);
+	if (strlen (addresses) == 0)
+		return;
 
-	start = (gchar *) addresses;
-	current = start;
-	last_blank = start;
+	str = g_string_new ("");
+	start = (gchar*) addresses;
+	cur = (gchar*) addresses;
 
-	while (*current != '\0') {
-		if ((start == current)&&((*current == ' ')||(*current == ',')||(*current == ';'))) {
-			start = g_utf8_next_char (start);
-			start_offset++;
-			last_blank = current;
-		} else if ((*current == ',')||(*current == ';')) {
+	for (cur = start; *cur != '\0'; cur = g_utf8_next_char (cur)) {
+		if (*cur == ',' || *cur == ';') {
 			gint *start_index, *end_index;
-			start_index = g_new0(gint, 1);
-			end_index = g_new0(gint, 1);
-			*start_index = start_offset;
-			*end_index = current_offset;
+			gchar *next_char = g_utf8_next_char (cur);
+
+			if (!g_utf8_strchr (start, (cur - start + 1), g_utf8_get_char ("@")) &&
+			    next_char && *next_char != '\n')
+				continue;
+
+			start_index = g_new0 (gint, 1);
+			end_index = g_new0 (gint, 1);
+			*start_index = g_utf8_pointer_to_offset (addresses, start);
+			*end_index = g_utf8_pointer_to_offset (addresses, cur);;
 			*start_indexes = g_slist_prepend (*start_indexes, start_index);
 			*end_indexes = g_slist_prepend (*end_indexes, end_index);
-			start = g_utf8_next_char (current);
-			start_offset = current_offset + 1;
-			last_blank = start;
-		} else if (*current == '"') {
-			current = g_utf8_next_char (current);
-			current_offset ++;
-			while ((*current != '"')&&(*current != '\0')) {
-				current = g_utf8_next_char (current);
-				current_offset ++;
-			}
+			start = g_utf8_next_char (cur);
 		}
-				
-		current = g_utf8_next_char (current);
-		current_offset ++;
 	}
 
-	if (start != current) {
-			gint *start_index, *end_index;
-			start_index = g_new0(gint, 1);
-			end_index = g_new0(gint, 1);
-			*start_index = start_offset;
-			*end_index = current_offset;
-			*start_indexes = g_slist_prepend (*start_indexes, start_index);
-			*end_indexes = g_slist_prepend (*end_indexes, end_index);
+	if (start != cur) {
+		gint *start_index, *end_index;
+		start_index = g_new0 (gint, 1);
+		end_index = g_new0 (gint, 1);
+		*start_index = g_utf8_pointer_to_offset (addresses, start);
+		*end_index = g_utf8_pointer_to_offset (addresses, cur);;
+		*start_indexes = g_slist_prepend (*start_indexes, start_index);
+		*end_indexes = g_slist_prepend (*end_indexes, end_index);
 	}
-	
-	*start_indexes = g_slist_reverse (*start_indexes);
-	*end_indexes = g_slist_reverse (*end_indexes);
 
-	return;
+	if (*start_indexes)
+		*start_indexes = g_slist_reverse (*start_indexes);
+	if (*end_indexes)
+		*end_indexes = g_slist_reverse (*end_indexes);
 }
 
 
@@ -650,12 +696,56 @@ modest_text_utils_split_addresses_list (const gchar *addresses)
 	addr = g_strndup (my_addrs, end - my_addrs);
 	g_strchomp (addr);
 
+	remove_extra_spaces (addr);
+
 	head = g_slist_append (NULL, addr);
 	head->next = modest_text_utils_split_addresses_list (end); /* recurse */
 
 	return head;
 }
 
+gchar *
+modest_text_utils_join_addresses (const gchar *from,
+				  const gchar *to,
+				  const gchar *cc,
+				  const gchar *bcc)
+{
+	GString *buffer;
+	gboolean add_separator = FALSE;
+
+	buffer = g_string_new ("");
+
+	if (from && strlen (from)) {
+		buffer = g_string_append (buffer, from);
+		add_separator = TRUE;
+	}
+	if (to && strlen (to)) {
+		if (add_separator)
+			buffer = g_string_append (buffer, "; ");
+		else
+			add_separator = TRUE;
+
+		buffer = g_string_append (buffer, to);
+	}
+	if (cc && strlen (cc)) {
+		if (add_separator)
+			buffer = g_string_append (buffer, "; ");
+		else
+			add_separator = TRUE;
+
+		buffer = g_string_append (buffer, cc);
+	}
+	if (bcc && strlen (bcc)) {
+		if (add_separator)
+			buffer = g_string_append (buffer, "; ");
+		else
+			add_separator = TRUE;
+
+		buffer = g_string_append (buffer, bcc);
+	}
+
+	return g_string_free (buffer, FALSE);
+}
 
 void
 modest_text_utils_address_range_at_position (const gchar *recipients_list,
@@ -766,7 +856,7 @@ get_indent_level (const char *l)
 	/*      if we hit the signature marker "-- ", we return -(indent + 1). This
 	 *      stops reformatting.
 	 */
-	if (strcmp (l, "-- ") == 0) {
+	if (strcmp (l, MODEST_TEXT_UTILS_SIGNATURE_MARKER) == 0) {
 		return -1 - indent;
 	} else {
 		return indent;
@@ -922,6 +1012,7 @@ modest_text_utils_quote_body (GString *output, const gchar *text,
 				g_string_prepend (l, remaining->str);
 			} else {
 				do {
+					gunichar remaining_first;
 					breakpoint =
 						get_breakpoint (remaining->str,
 								rem_indent,
@@ -930,9 +1021,11 @@ modest_text_utils_quote_body (GString *output, const gchar *text,
 						       remaining, breakpoint);
 					g_string_erase (remaining, 0,
 							breakpoint);
-					if (remaining->str[0] == ' ') {
-						g_string_erase (remaining, 0,
-								1);
+					remaining_first = g_utf8_get_char_validated (remaining->str, remaining->len);
+					if (remaining_first != ((gunichar) -1)) {
+						if (g_unichar_isspace (remaining_first)) {
+							g_string_erase (remaining, 0, g_utf8_next_char (remaining->str) - remaining->str);
+						}
 					}
 				} while (remaining->len);
 			}
@@ -964,7 +1057,7 @@ modest_text_utils_quote_plain_text (const gchar *text,
 	q = g_string_new ("");
 
 	if (signature != NULL) {
-		q = g_string_append (q, "\n--\n");
+		g_string_append_printf (q, "\n%s\n", MODEST_TEXT_UTILS_SIGNATURE_MARKER);
 		q = g_string_append (q, signature);
 	}
 
@@ -1011,12 +1104,12 @@ modest_text_utils_quote_html (const gchar *text,
 		GString *quoted_text;
 		g_string_append (result_string, "<pre>\n");
 		if (signature) {
-			quote_html_add_to_gstring (result_string, SIGNATURE_MARKER);
+			quote_html_add_to_gstring (result_string, MODEST_TEXT_UTILS_SIGNATURE_MARKER);
 			quote_html_add_to_gstring (result_string, signature);
 		}
 		quote_html_add_to_gstring (result_string, cite);
 		quoted_text = g_string_new ("");
-		quoted_text = modest_text_utils_quote_body (quoted_text, text, ">", limit);
+		quoted_text = modest_text_utils_quote_body (quoted_text, (text) ? text : "", ">", limit);
 		quote_html_add_to_gstring (result_string, quoted_text->str);
 		g_string_free (quoted_text, TRUE);
 		if (attachments) {
@@ -1040,6 +1133,7 @@ cmp_offsets_reverse (const url_match_t *match1, const url_match_t *match2)
 
 static gint url_matches_block = 0;
 static url_match_pattern_t patterns[] = MAIL_VIEWER_URL_MATCH_PATTERNS;
+static GMutex *url_patterns_mutex = NULL;
 
 
 static gboolean
@@ -1074,17 +1168,25 @@ free_patterns ()
 void
 modest_text_utils_hyperlinkify_begin (void)
 {
+
+	if (url_patterns_mutex == NULL) {
+		url_patterns_mutex = g_mutex_new ();
+	}
+	g_mutex_lock (url_patterns_mutex);
 	if (url_matches_block == 0)
 		compile_patterns ();
 	url_matches_block ++;
+	g_mutex_unlock (url_patterns_mutex);
 }
 
 void
 modest_text_utils_hyperlinkify_end (void)
 {
+	g_mutex_lock (url_patterns_mutex);
 	url_matches_block--;
 	if (url_matches_block <= 0)
 		free_patterns ();
+	g_mutex_unlock (url_patterns_mutex);
 }
 
 
@@ -1263,7 +1365,37 @@ modest_text_utils_get_display_address (gchar *address)
 }
 
 
+gchar *
+modest_text_utils_get_display_addresses (const gchar *recipients)
+{
+	gchar *addresses;
+	GSList *recipient_list;
+
+	addresses = NULL;
+	recipient_list = modest_text_utils_split_addresses_list (recipients);
+	if (recipient_list) {
+		GString *add_string = g_string_sized_new (strlen (recipients));
+		GSList *iter = recipient_list;
+		gboolean first = TRUE;
+
+		while (iter) {
+			/* Strings are changed in place */
+			modest_text_utils_get_display_address ((gchar *) iter->data);
+			if (G_UNLIKELY (first)) {
+				g_string_append_printf (add_string, "%s", (gchar *) iter->data);
+				first = FALSE;
+			} else {
+				g_string_append_printf (add_string, ", %s", (gchar *) iter->data);
+			}
+			iter = g_slist_next (iter);
+		}
+		g_slist_foreach (recipient_list, (GFunc) g_free, NULL);
+		g_slist_free (recipient_list);
+		addresses = g_string_free (add_string, FALSE);
+	}
 
+	return addresses;
+}
 
 
 gchar *
@@ -1392,10 +1524,17 @@ modest_text_utils_get_display_date (time_t date)
 	/* if it's today, show the time, if it's not today, show the date instead */
 
 	/* TODO: take into account the system config for 24/12h */
+#ifdef MODEST_TOOLKIT_HILDON2
 	if (day == date_day) /* is the date today? */
 		modest_text_utils_strftime (date_buf, DATE_BUF_SIZE, _HL("wdgt_va_24h_time"), date);
 	else 
 		modest_text_utils_strftime (date_buf, DATE_BUF_SIZE, _HL("wdgt_va_date"), date); 
+#else
+	if (day == date_day) /* is the date today? */
+		modest_text_utils_strftime (date_buf, DATE_BUF_SIZE, "%X", date);
+	else 
+		modest_text_utils_strftime (date_buf, DATE_BUF_SIZE, "%x", date); 
+#endif
 
 	return date_buf; /* this is a static buffer, don't free! */
 }
@@ -1599,6 +1738,7 @@ modest_text_utils_validate_recipient (const gchar *recipient, const gchar **inva
 
 	/* quoted string */
 	if (*current == '\"') {
+		gchar *last_quote = NULL;
 		current = g_utf8_next_char (current);
 		has_error = TRUE;
 		for (; *current != '\0'; current = g_utf8_next_char (current)) {
@@ -1614,9 +1754,11 @@ modest_text_utils_validate_recipient (const gchar *recipient, const gchar **inva
 			} else if (*current == '\"') {
 				has_error = FALSE;
 				current = g_utf8_next_char (current);
-				break;
+				last_quote = current;
 			}
 		}
+		if (last_quote)
+			current = g_utf8_next_char (last_quote);
 	} else {
 		has_error = TRUE;
 		for (current = stripped ; *current != '\0'; current = g_utf8_next_char (current)) {
@@ -1636,6 +1778,9 @@ modest_text_utils_validate_recipient (const gchar *recipient, const gchar **inva
 	g_free (stripped);
 	right_part = g_strstrip (right_part);
 
+	if (g_str_has_suffix (right_part, ",") || g_str_has_suffix (right_part, ";"))
+               right_part [(strlen (right_part) - 1)] = '\0';
+
 	if (g_str_has_prefix (right_part, "<") &&
 	    g_str_has_suffix (right_part, ">")) {
 		gchar *address;
@@ -1661,19 +1806,19 @@ modest_text_utils_get_display_size (guint64 size)
 	const guint GB=1024 * MB;
 
 	if (size == 0)
-		return g_strdup_printf (_FM("sfil_li_size_kb"), 0);
+		return g_strdup_printf (_FM("sfil_li_size_kb"), (int) 0);
 	if (0 <= size && size < KB)
-		return g_strdup_printf (_FM("sfil_li_size_1kb_99kb"), 1);
+		return g_strdup_printf (_FM("sfil_li_size_1kb_99kb"), (int) 1);
 	else if (KB <= size && size < 100 * KB)
-		return g_strdup_printf (_FM("sfil_li_size_1kb_99kb"), size / KB);
+		return g_strdup_printf (_FM("sfil_li_size_1kb_99kb"), (int) size / KB);
 	else if (100*KB <= size && size < MB)
-		return g_strdup_printf (_FM("sfil_li_size_100kb_1mb"), (float) size / MB);
+		return g_strdup_printf (_FM("sfil_li_size_100kb_1mb"), (int) size / KB);
 	else if (MB <= size && size < 10*MB)
 		return g_strdup_printf (_FM("sfil_li_size_1mb_10mb"), (float) size / MB);
 	else if (10*MB <= size && size < GB)
-		return g_strdup_printf (_FM("sfil_li_size_10mb_1gb"), size / MB);
+		return g_strdup_printf (_FM("sfil_li_size_10mb_1gb"), (float) size / MB);
 	else
-		return g_strdup_printf (_FM("sfil_li_size_1gb_or_greater"), (float) size / GB);	
+		return g_strdup_printf (_FM("sfil_li_size_1gb_or_greater"), (float) size / GB);
 }
 
 static gchar *
@@ -1690,11 +1835,11 @@ get_email_from_address (const gchar * address)
 		return g_strndup (left_limit + 1, (right_limit - left_limit) - 1);
 }
 
-gchar *      
+gchar *
 modest_text_utils_get_color_string (GdkColor *color)
 {
 	g_return_val_if_fail (color, NULL);
-	
+
 	return g_strdup_printf ("#%x%x%x%x%x%x%x%x%x%x%x%x",
 				(color->red >> 12)   & 0xf, (color->red >> 8)   & 0xf,
 				(color->red >>  4)   & 0xf, (color->red)        & 0xf,
@@ -1826,6 +1971,31 @@ modest_text_utils_buffer_selection_is_valid (GtkTextBuffer *buffer)
 	return result;
 }
 
+static void
+remove_quotes (gchar **quotes)
+{
+	if (g_str_has_prefix (*quotes, "\"") && g_str_has_suffix (*quotes, "\"")) {
+		gchar *result;
+		result = g_strndup ((*quotes)+1, strlen (*quotes) - 2);
+		g_free (*quotes);
+		*quotes = result;
+	}
+}
+
+static void
+remove_extra_spaces (gchar *string)
+{
+	gchar *start;
+
+	start = string;
+	while (start && start[0] != '\0') {
+		if ((start[0] == ' ') && (start[1] == ' ')) {
+			g_strchug (start+1);
+		}
+		start++;
+	}
+}
+
 gchar *
 modest_text_utils_escape_mnemonics (const gchar *text)
 {
@@ -1845,3 +2015,208 @@ modest_text_utils_escape_mnemonics (const gchar *text)
 	
 	return g_string_free (result, FALSE);
 }
+
+gchar *
+modest_text_utils_simplify_recipients (const gchar *recipients)
+{
+	GSList *addresses, *node;
+	GString *result;
+	gboolean is_first = TRUE;
+
+	if (recipients == NULL)
+		return g_strdup ("");
+
+	addresses = modest_text_utils_split_addresses_list (recipients);
+	result = g_string_new ("");
+
+	for (node = addresses; node != NULL; node = g_slist_next (node)) {
+		const gchar *address = (const gchar *) node->data;
+		gchar *left_limit, *right_limit;
+
+		left_limit = strstr (address, "<");
+		right_limit = g_strrstr (address, ">");
+
+		if (is_first)
+			is_first = FALSE;
+		else
+			result = g_string_append (result, ", ");
+
+		if ((left_limit == NULL)||(right_limit == NULL)|| (left_limit > right_limit)) {
+			result = g_string_append (result, address);
+		} else {
+			gchar *name_side;
+			gchar *email_side;
+			name_side = g_strndup (address, left_limit - address);
+			name_side = g_strstrip (name_side);
+			remove_quotes (&name_side);
+			email_side = get_email_from_address (address);
+			if (name_side && email_side && !strcmp (name_side, email_side)) {
+				result = g_string_append (result, email_side);
+			} else {
+				result = g_string_append (result, address);
+			}
+			g_free (name_side);
+			g_free (email_side);
+		}
+
+	}
+	g_slist_foreach (addresses, (GFunc)g_free, NULL);
+	g_slist_free (addresses);
+
+	return g_string_free (result, FALSE);
+
+}
+
+GSList *
+modest_text_utils_remove_duplicate_addresses_list (GSList *address_list)
+{
+	GSList *new_list, *iter;
+	GHashTable *table;
+
+	g_return_val_if_fail (address_list, NULL);
+
+	table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
+
+	new_list = address_list;
+	iter = address_list;
+	while (iter) {
+		const gchar* address = (const gchar*)iter->data;
+
+		/* We need only the email to just compare it and not
+		   the full address which would make "a <a@a.com>"
+		   different from "a@a.com" */
+		const gchar *email = get_email_from_address (address);
+
+		/* ignore the address if already seen */
+		if (g_hash_table_lookup (table, email) == 0) {
+			g_hash_table_insert (table, (gchar*)email, GINT_TO_POINTER(1));
+			iter = g_slist_next (iter);
+		} else {
+			GSList *tmp = g_slist_next (iter);
+			new_list = g_slist_delete_link (new_list, iter);
+			iter = tmp;
+		}
+	}
+
+	g_hash_table_unref (table);
+
+	return new_list;
+}
+
+gchar *
+modest_text_utils_get_secure_header (const gchar *value,
+				     const gchar *header)
+{
+	const gint max_len = 16384;
+	gchar *new_value = NULL;
+	gchar *needle = g_strrstr (value, header);
+
+	if (needle && value != needle)
+		new_value = g_strdup (needle + strlen (header));
+
+	if (!new_value)
+		new_value = g_strdup (value);
+
+	/* Do a max length check to prevent DoS attacks caused by huge
+	   malformed headers */
+	if (g_utf8_validate (new_value, -1, NULL)) {
+		if (g_utf8_strlen (new_value, -1) > max_len) {
+			gchar *tmp = g_malloc0 (max_len * 4);
+			g_utf8_strncpy (tmp, (const gchar *) new_value, max_len);
+			g_free (new_value);
+			new_value = tmp;
+		}
+	} else {
+		if (strlen (new_value) > max_len) {
+			gchar *tmp = g_malloc0 (max_len);
+			strncpy (new_value, tmp, max_len);
+			g_free (new_value);
+			new_value = tmp;
+		}
+	}
+
+	return new_value;
+}
+
+static gboolean
+is_quoted (const char *start, const gchar *end)
+{
+	gchar *c;
+
+	c = (gchar *) start;
+	while (*c == ' ')
+		c = g_utf8_next_char (c);
+
+	if (*c == '\0' || *c != '\"')
+		return FALSE;
+
+	c = (gchar *) end;
+	while (*c == ' ' && c != start)
+		c = g_utf8_prev_char (c);
+
+	if (c == start || *c != '\"')
+		return FALSE;
+
+	return TRUE;
+}
+
+
+static void
+quote_name_part (GString **str, gchar **cur, gchar **start)
+{
+	gchar *blank;
+	gint str_len = g_utf8_pointer_to_offset (*start, *cur) -
+		g_utf8_pointer_to_offset (*start, *start);
+
+	while (**start == ' ') {
+		*start = g_utf8_next_char (*start);
+		str_len--;
+	}
+
+	blank = g_utf8_strrchr (*start, str_len, g_utf8_get_char (" "));
+	if (blank && (blank != *start)) {
+		if (is_quoted (*start, blank - 1)) {
+			*str = g_string_append_len (*str, *start, str_len);
+			*str = g_string_append (*str, ";");
+			*start = g_utf8_next_char (*cur);
+		} else {
+			*str = g_string_append_c (*str, '"');
+			*str = g_string_append_len (*str, *start,
+						    (g_utf8_pointer_to_offset (*start, blank) -
+						     g_utf8_pointer_to_offset (*start, *start)));
+			*str = g_string_append_c (*str, '"');
+			*str = g_string_append_len (*str, blank,
+						    (g_utf8_pointer_to_offset (*start, *cur) -
+						     g_utf8_pointer_to_offset (*start, blank)));
+			*str = g_string_append (*str, ";");
+			*start = g_utf8_next_char (*cur);
+		}
+	} else {
+		*str = g_string_append_len (*str, *start, str_len);
+		*str = g_string_append (*str, ";");
+		*start = g_utf8_next_char (*cur);
+	}
+}
+
+gchar *
+modest_text_utils_quote_names (const gchar *recipients)
+{
+	GString *str;
+	gchar *start, *cur;
+
+	str = g_string_new ("");
+	start = (gchar*) recipients;
+	cur = (gchar*) recipients;
+
+	for (cur = start; *cur != '\0'; cur = g_utf8_next_char (cur)) {
+		if (*cur == ',' || *cur == ';') {
+			if (!g_utf8_strchr (start, (cur - start + 1), g_utf8_get_char ("@")))
+				continue;
+			quote_name_part (&str, &cur, &start);
+		}
+	}
+
+	quote_name_part (&str, &cur, &start);
+
+	return g_string_free (str, FALSE);
+}