X-Git-Url: http://git.maemo.org/git/?p=modest;a=blobdiff_plain;f=src%2Fmodest-text-utils.c;h=99cb7107410146b5481e8a5c2f5c15ac4d03df15;hp=5aa886044fc2d3ca220a6c1337636b4f0658c2f8;hb=06546fe50ce8a03df5fe73027873467aa21e6244;hpb=a6ff5269ddd912e12602d34a7bc7429711e84b61

diff --git a/src/modest-text-utils.c b/src/modest-text-utils.c
index 5aa8860..99cb710 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},\
@@ -145,8 +143,9 @@ static GSList*  get_url_matches         (GString *txt, gint offset);
 
 static GString* get_next_line           (const char *b, const gsize blen, const gchar * iter);
 static int      get_indent_level        (const char *l);
-static void     unquote_line            (GString * l);
-static void     append_quoted           (GString * buf, const int indent, const GString * str, 
+static void     unquote_line            (GString * l, const gchar *quote_symbol);
+static void     append_quoted           (GString * buf, const gchar *quote_symbol,
+					 const int indent, const GString * str, 
 					 const int cutpoint);
 static int      get_breakpoint_utf8     (const gchar * s, const gint indent, const gint limit);
 static int      get_breakpoint_ascii    (const gchar * s, const gint indent, const gint limit);
@@ -212,14 +211,17 @@ modest_text_utils_cite (const gchar *text,
 	g_return_val_if_fail (text, NULL);
 	g_return_val_if_fail (content_type, NULL);
 	
-	if (!signature)
-		retval = g_strdup ("");
-	else if (strcmp(content_type, "text/html") == 0) {
-		tmp_sig = g_strconcat ("\n", SIGNATURE_MARKER,"\n", signature, NULL);
-		retval = modest_text_utils_convert_to_html_body(tmp_sig, -1, TRUE);
+	if (!signature) {
+		tmp_sig = g_strdup (text);
+	} else {
+		tmp_sig = g_strconcat (text, "\n", MODEST_TEXT_UTILS_SIGNATURE_MARKER, "\n", signature, NULL);
+	}
+
+	if (strcmp (content_type, "text/html") == 0) {
+		retval = modest_text_utils_convert_to_html_body (tmp_sig, -1, TRUE);
 		g_free (tmp_sig);
 	} else {
-		retval = g_strconcat (text, "\n", SIGNATURE_MARKER, "\n", signature, NULL);
+		retval = tmp_sig;
 	}
 
 	return retval;
@@ -282,6 +284,8 @@ 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);
@@ -312,7 +316,23 @@ 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);
 
@@ -322,6 +342,39 @@ 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)
 {
@@ -330,26 +383,26 @@ 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
@@ -412,6 +465,9 @@ 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;
 }
 
@@ -431,7 +487,7 @@ 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;
 		}
 		
@@ -468,7 +524,6 @@ 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;
@@ -612,6 +667,7 @@ modest_text_utils_split_addresses_list (const gchar *addresses)
 	const gchar *my_addrs = addresses;
 	const gchar *end;
 	gchar *addr;
+	gboolean after_at = FALSE;
 
 	g_return_val_if_fail (addresses, NULL);
 	
@@ -626,8 +682,20 @@ modest_text_utils_split_addresses_list (const gchar *addresses)
 	/* nope, we are at the start of some address
 	 * now, let's find the end of the address */
 	end = my_addrs + 1;
-	while (end[0] && end[0] != ',' && end[0] != ';')
+	while (end[0] && end[0] != ';' && !(after_at && end[0] == ',')) {
+		if (end[0] == '\"') {
+			while (end[0] && end[0] != '\"')
+				++end;
+		}
+		if (end[0] == '@') {
+			after_at = TRUE;
+		}
+		if ((end[0] && end[0] == '>')&&(end[1] && end[1] == ',')) {
+			++end;
+			break;
+		}
 		++end;
+	}
 
 	/* we got the address; copy it and remove trailing whitespace */
 	addr = g_strndup (my_addrs, end - my_addrs);
@@ -749,7 +817,7 @@ 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;
@@ -757,15 +825,17 @@ get_indent_level (const char *l)
 }
 
 static void
-unquote_line (GString * l)
+unquote_line (GString * l, const gchar *quote_symbol)
 {
 	gchar *p;
+	gint quote_len;
 
 	p = l->str;
+	quote_len = strlen (quote_symbol);
 	while (p[0]) {
-		if (p[0] == '>') {
-			if (p[1] == ' ') {
-				p++;
+		if (g_str_has_prefix (p, quote_symbol)) {
+			if (p[quote_len] == ' ') {
+				p += quote_len;
 			}
 		} else {
 			break;
@@ -776,15 +846,19 @@ unquote_line (GString * l)
 }
 
 static void
-append_quoted (GString * buf, int indent, const GString * str,
+append_quoted (GString * buf, const gchar *quote_symbol,
+	       int indent, const GString * str,
 	       const int cutpoint)
 {
 	int i;
+	gchar *quote_concat;
 
 	indent = indent < 0 ? abs (indent) - 1 : indent;
+	quote_concat = g_strconcat (quote_symbol, " ", NULL);
 	for (i = 0; i <= indent; i++) {
-		g_string_append (buf, "> ");
+		g_string_append (buf, quote_concat);
 	}
+	g_free (quote_concat);
 	if (cutpoint > 0) {
 		g_string_append_len (buf, str->str, cutpoint);
 	} else {
@@ -873,40 +947,25 @@ quoted_attachments (GList *attachments)
 
 }
 
-static gchar *
-modest_text_utils_quote_plain_text (const gchar *text, 
-				    const gchar *cite, 
-				    const gchar *signature,
-				    GList *attachments,
-				    int limit)
+static GString *
+modest_text_utils_quote_body (GString *output, const gchar *text,
+			      const gchar *quote_symbol,
+			      int limit)
 {
+
 	const gchar *iter;
-	gint indent, breakpoint, rem_indent = 0;
-	GString *q, *l, *remaining;
 	gsize len;
-	gchar *attachments_string = NULL;
-
-	q = g_string_new ("");
-
-	if (signature != NULL) {
-		q = g_string_append (q, "\n--\n");
-		q = g_string_append (q, signature);
-	}
-
-	q = g_string_append (q, "\n");
-	q = g_string_append (q, cite);
-	q = g_string_append_c (q, '\n');
-
-	/* remaining will store the rest of the line if we have to break it */
-	remaining = g_string_new ("");
+	gint indent, breakpoint, rem_indent = 0;
+	GString *l, *remaining;
 
 	iter = text;
 	len = strlen(text);
+	remaining = g_string_new ("");
 	do {
 		l = get_next_line (text, len, iter);
 		iter = iter + l->len + 1;
 		indent = get_indent_level (l->str);
-		unquote_line (l);
+		unquote_line (l, quote_symbol);
 
 		if (remaining->len) {
 			if (l->len && indent == rem_indent) {
@@ -914,17 +973,20 @@ modest_text_utils_quote_plain_text (const gchar *text,
 				g_string_prepend (l, remaining->str);
 			} else {
 				do {
+					gunichar remaining_first;
 					breakpoint =
 						get_breakpoint (remaining->str,
 								rem_indent,
 								limit);
-					append_quoted (q, rem_indent,
+					append_quoted (output, quote_symbol, rem_indent,
 						       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);
 			}
@@ -936,10 +998,36 @@ modest_text_utils_quote_plain_text (const gchar *text,
 			g_string_erase (remaining, 0, 1);
 		}
 		rem_indent = indent;
-		append_quoted (q, indent, l, breakpoint);
+		append_quoted (output, quote_symbol, indent, l, breakpoint);
 		g_string_free (l, TRUE);
 	} while ((iter < text + len) || (remaining->str[0]));
 
+	return output;
+}
+
+static gchar *
+modest_text_utils_quote_plain_text (const gchar *text, 
+				    const gchar *cite, 
+				    const gchar *signature,
+				    GList *attachments,
+				    int limit)
+{
+	GString *q;
+	gchar *attachments_string = NULL;
+
+	q = g_string_new ("");
+
+	if (signature != NULL) {
+		g_string_append_printf (q, "\n%s\n", MODEST_TEXT_UTILS_SIGNATURE_MARKER);
+		q = g_string_append (q, signature);
+	}
+
+	q = g_string_append (q, "\n");
+	q = g_string_append (q, cite);
+	q = g_string_append_c (q, '\n');
+
+	q = modest_text_utils_quote_body (q, text, ">", limit);
+
 	attachments_string = quoted_attachments (attachments);
 	q = g_string_append (q, attachments_string);
 	g_free (attachments_string);
@@ -974,13 +1062,17 @@ modest_text_utils_quote_html (const gchar *text,
 			      "<body>\n<br/>\n");
 
 	if (text || cite || signature) {
+		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);
-		quote_html_add_to_gstring (result_string, text);
+		quoted_text = g_string_new ("");
+		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) {
 			gchar *attachments_string = quoted_attachments (attachments);
 			quote_html_add_to_gstring (result_string, attachments_string);
@@ -1002,6 +1094,7 @@ 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
@@ -1036,17 +1129,25 @@ 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);
 }
 
 
@@ -1212,18 +1313,50 @@ modest_text_utils_get_display_address (gchar *address)
 		
 	for (i = 0; address[i]; ++i) {
 		if (address[i] == '<') {
-			if (G_UNLIKELY(i == 0))
-				return; /* there's nothing else, leave it */
-			else {
+			if (G_UNLIKELY(i == 0)) {
+				break; /* there's nothing else, leave it */
+			}else {
 				address[i] = '\0'; /* terminate the string here */
-				return;
+				break;
 			}
 		}
 	}
+
+	g_strchomp (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 *
@@ -1321,7 +1454,7 @@ modest_text_utils_utf8_strcmp (const gchar* s1, const gchar *s2, gboolean insens
 
 		/* optimization: shortcut if first char is ascii */ 
 		if (((s1[0] & 0x80) == 0) && ((s2[0] & 0x80) == 0) &&
-		    (s1[0] != s2[0])) 
+		    (tolower(s1[0]) != tolower (s2[0]))) 
 			return tolower(s1[0]) - tolower(s2[0]);
 		
 		n1 = g_utf8_strdown (s1, -1);
@@ -1351,10 +1484,18 @@ 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! */
 }
@@ -1620,19 +1761,19 @@ 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);
-	if (0 < size && size < KB)
-		return g_strdup_printf (_FM("sfil_li_size_kb"), 1);
+		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"), (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 *
@@ -1649,11 +1790,11 @@ 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,
@@ -1785,6 +1926,17 @@ 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;
+	}
+}
+
 gchar *
 modest_text_utils_escape_mnemonics (const gchar *text)
 {
@@ -1804,3 +1956,125 @@ 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 = 128;
+	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;
+}