X-Git-Url: http://git.maemo.org/git/?p=modest;a=blobdiff_plain;f=src%2Fmodest-text-utils.c;h=fd737cc7abdd3b400136b27e42085d2a62257424;hp=0dd72292b589fea88eb50f7a4adf170abb2dd6b6;hb=12a672c559d983c4e49a7e4054ee14c0177ecb1c;hpb=674685c46e0ffd6a061f21930a1a33e5f579fa91

diff --git a/src/modest-text-utils.c b/src/modest-text-utils.c
index 0dd7229..fb4da84 100644
--- a/src/modest-text-utils.c
+++ b/src/modest-text-utils.c
@@ -1,74 +1,873 @@
-/* modest-ui.c */
+/* Copyright (c) 2006, Nokia Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * * Neither the name of the Nokia Corporation nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
 
-/* insert (c)/licensing information) */
 
-#include <gtk/gtk.h>
-#include <string.h>
 
-#include "modest-text-utils.h"
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif /*_GNU_SOURCE*/
+#include <string.h> /* for strcasestr */
 
 
+#include <glib.h>
+#include <stdlib.h>
+#include <glib/gi18n.h>
+#include <regex.h>
+#include <modest-tny-platform-factory.h>
+#include <modest-text-utils.h>
+#include <modest-runtime.h>
+#include <ctype.h>
+
 #ifdef HAVE_CONFIG_H
 #include <config.h>
-#endif /*HAVE_CONFIG_H*/
+#endif /*HAVE_CONFIG_H */
+
+/* defines */
+#define FORWARD_STRING _("mcen_ia_editor_original_message")
+#define FROM_STRING _("mail_va_from")
+#define SENT_STRING _("mcen_fi_message_properties_sent")
+#define TO_STRING _("mail_va_to")
+#define	SUBJECT_STRING _("mail_va_subject")
+#define EMPTY_STRING ""
+
+/*
+ * do the hyperlinkification only for texts < 50 Kb,
+ * as it's quite slow. Without this, e.g. mail with
+ * an uuencoded part (which is not recognized as attachment,
+ * will hang modest
+ */
+#define HYPERLINKIFY_MAX_LENGTH (1024*50)
+
+/*
+ * we need these regexps to find URLs in plain text e-mails
+ */
+typedef struct _url_match_pattern_t url_match_pattern_t;
+struct _url_match_pattern_t {
+	gchar   *regex;
+	regex_t *preg;
+	gchar   *prefix;
+};
+
+typedef struct _url_match_t url_match_t;
+struct _url_match_t {
+	guint offset;
+	guint len;
+	const gchar* prefix;
+};
+
+
+/*
+ * we mark the ampersand with \007 when converting text->html
+ * because after text->html we do hyperlink detecting, which
+ * could be screwed up by the ampersand.
+ * ie. 1<3 ==> 1\007lt;3
+ */
+#define MARK_AMP '\007'
+#define MARK_AMP_STR "\007"
+
+/* mark &amp; separately, because they are parts of urls.
+ * ie. a&b => a\006amp;b, but a>b => a\007gt;b
+ *
+ * we need to handle '&' separately, because it can be part of URIs
+ * (as in href="http://foo.bar?a=1&b=1"), so inside those URIs
+ * we need to re-replace \006amp; with '&' again, while outside uri's
+ * it will be '&amp;'
+ * 
+ * yes, it's messy, but a consequence of doing text->html first, then hyperlinkify
+ */
+#define MARK_AMP_URI '\006'
+#define MARK_AMP_URI_STR "\006"
 
 
+/* note: match MARK_AMP_URI_STR as well, because after txt->html, a '&' will look like $(MARK_AMP_URI_STR)"amp;" */
+#define MAIL_VIEWER_URL_MATCH_PATTERNS  {				\
+	{ "(feed:|)(file|rtsp|http|ftp|https|mms|mmsh|webcal|feed|rtsp|rdp|lastfm|sip)://[-a-z0-9_$.+!*(),;:@%=\?/~#&" 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_$%" MARK_AMP_URI_STR "=?/~#]",\
+	  NULL, "ftp://" },\
+	{ "(jabberto|voipto|sipto|sip|chatto|skype|xmpp):[-_a-z@0-9.+]+", \
+	   NULL, NULL},						    \
+	{ "mailto:[-_a-z0-9.\\+]+@[-_a-z0-9.]+",		    \
+	  NULL, NULL},\
+	{ "[-_a-z0-9.\\+]+@[-_a-z0-9.]+",\
+	  NULL, "mailto:"}\
+	}
+
+const gchar account_title_forbidden_chars[] = {
+	'\\', '/', ':', '*', '?', '\'', '<', '>', '|', '^'
+};
+const gchar folder_name_forbidden_chars[] = {
+	'<', '>', ':', '\'', '/', '\\', '|', '?', '*', '^', '%', '$', '#', '&'
+};
+const gchar user_name_forbidden_chars[] = {
+	'<', '>'
+};
+const guint ACCOUNT_TITLE_FORBIDDEN_CHARS_LENGTH = G_N_ELEMENTS (account_title_forbidden_chars);
+const guint FOLDER_NAME_FORBIDDEN_CHARS_LENGTH = G_N_ELEMENTS (folder_name_forbidden_chars);
+const guint USER_NAME_FORBIDDEN_CHARS_LENGTH = G_N_ELEMENTS (user_name_forbidden_chars);
+
 /* private */
-static GString *
-get_next_line(GtkTextBuffer *b, GtkTextIter *iter);
+static gchar*   cite                    (const time_t sent_date, const gchar *from);
+static void     hyperlinkify_plain_text (GString *txt, gint offset);
+static gint     cmp_offsets_reverse     (const url_match_t *match1, const url_match_t *match2);
+static GSList*  get_url_matches         (GString *txt, gint offset);
 
-static int
-get_indent_level(const char *l);
+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, 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);
+static int      get_breakpoint          (const gchar * s, const gint indent, const gint limit);
 
-static void
-unquote_line(GString *l);
+static gchar*   modest_text_utils_quote_plain_text (const gchar *text, 
+						    const gchar *cite, 
+						    const gchar *signature,
+						    GList *attachments, 
+						    int limit);
 
-static void
-append_quoted(GString *buf, const int indent, const GString *str, const int cutpoint);
+static gchar*   modest_text_utils_quote_html       (const gchar *text, 
+						    const gchar *cite,
+						    const gchar *signature,
+						    GList *attachments,
+						    int limit);
+static gchar*   get_email_from_address (const gchar *address);
+static void     remove_extra_spaces (gchar *string);
 
-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);
 
-static int
-get_breakpoint(const gchar *s, const gint indent, const gint limit);
+/* ******************************************************************* */
+/* ************************* PUBLIC FUNCTIONS ************************ */
+/* ******************************************************************* */
 
-static GString *
-get_next_line(GtkTextBuffer *b, GtkTextIter *iter)
+gchar *
+modest_text_utils_quote (const gchar *text, 
+			 const gchar *content_type,
+			 const gchar *signature,
+			 const gchar *from,
+			 const time_t sent_date, 
+			 GList *attachments,
+			 int limit)
 {
-	GtkTextIter iter2, iter3;
-	gchar *tmp;
-	GString *line;
+	gchar *retval, *cited;
+
+	g_return_val_if_fail (text, NULL);
+	g_return_val_if_fail (content_type, NULL);
+
+	cited = cite (sent_date, from);
 	
-	if (gtk_text_iter_is_end(iter))
-		return g_string_new("");
+	if (content_type && strcmp (content_type, "text/html") == 0)
+		/* TODO: extract the <body> of the HTML and pass it to
+		   the function */
+		retval = modest_text_utils_quote_html (text, cited, signature, attachments, limit);
+	else
+		retval = modest_text_utils_quote_plain_text (text, cited, signature, attachments, limit);
+	
+	g_free (cited);
+	
+	return retval;
+}
+
+
+gchar *
+modest_text_utils_cite (const gchar *text,
+			const gchar *content_type,
+			const gchar *signature,
+			const gchar *from,
+			time_t sent_date)
+{
+	gchar *retval;
+	gchar *tmp_sig;
+	
+	g_return_val_if_fail (text, NULL);
+	g_return_val_if_fail (content_type, NULL);
+	
+	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 = tmp_sig;
+	}
+
+	return retval;
+}
+
+static gchar *
+forward_cite (const gchar *from,
+	      const gchar *sent,
+	      const gchar *to,
+	      const gchar *subject)
+{
+	g_return_val_if_fail (sent, NULL);
+	
+	return g_strdup_printf ("%s\n%s %s\n%s %s\n%s %s\n%s %s\n", 
+				FORWARD_STRING, 
+				FROM_STRING, (from)?from:"",
+				SENT_STRING, sent,
+				TO_STRING, (to)?to:"",
+				SUBJECT_STRING, (subject)?subject:"");
+}
+
+gchar * 
+modest_text_utils_inline (const gchar *text,
+			  const gchar *content_type,
+			  const gchar *signature,
+			  const gchar *from,
+			  time_t sent_date,
+			  const gchar *to,
+			  const gchar *subject)
+{
+	gchar sent_str[101];
+	gchar *cited;
+	gchar *retval;
+	
+	g_return_val_if_fail (text, NULL);
+	g_return_val_if_fail (content_type, NULL);
+	
+	modest_text_utils_strftime (sent_str, 100, "%c", sent_date);
+
+	cited = forward_cite (from, sent_str, to, subject);
+	
+	if (content_type && strcmp (content_type, "text/html") == 0)
+		retval = modest_text_utils_quote_html (text, cited, signature, NULL, 80);
+	else
+		retval = modest_text_utils_quote_plain_text (text, cited, signature, NULL, 80);
 	
-	gtk_text_buffer_get_iter_at_line_offset(b,
-			&iter2,
-			gtk_text_iter_get_line(iter),
-			gtk_text_iter_get_chars_in_line(iter) - 1
-		);
-	iter3 = iter2;
-	gtk_text_iter_forward_char(&iter2);
-	if (gtk_text_iter_is_end(&iter2)) {
-		tmp = gtk_text_buffer_get_text(b, &iter2, iter, FALSE);
+	g_free (cited);
+	return retval;
+}
+
+/* just to prevent warnings:
+ * warning: `%x' yields only last 2 digits of year in some locales
+ */
+gsize
+modest_text_utils_strftime(char *s, gsize max, const char *fmt, time_t timet)
+{
+        struct tm tm;
+
+	/* To prevent possible problems in strftime that could leave
+	   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);
+	 */
+	localtime_r (&timet, &tm);
+	return strftime(s, max, fmt, &tm);
+}
+
+gchar *
+modest_text_utils_derived_subject (const gchar *subject, gboolean is_reply)
+{
+	gchar *tmp, *subject_dup, *retval, *prefix;
+	const gchar *untranslated_prefix;
+	gint prefix_len, untranslated_prefix_len;
+	gboolean translated_found = FALSE;
+	gboolean first_time;
+
+	if (!subject || subject[0] == '\0')
+		subject = _("mail_va_no_subject");
+
+	subject_dup = g_strdup (subject);
+	tmp = g_strchug (subject_dup);
+
+	prefix = (is_reply) ? _("mail_va_re") : _("mail_va_fw");
+	prefix = g_strconcat (prefix, ":", NULL);
+	prefix_len = g_utf8_strlen (prefix, -1);
+
+	untranslated_prefix =  (is_reply) ? "Re:" : "Fw:";
+	untranslated_prefix_len = 3;
+
+	/* We do not want things like "Re: Re: Re:" or "Fw: Fw:" so
+	   delete the previous ones */
+	first_time = TRUE;
+	do {
+		if (g_str_has_prefix (tmp, prefix)) {
+			tmp += prefix_len;
+			tmp = g_strchug (tmp);
+			/* Do not consider translated prefixes in the
+			   middle of a Re:Re:..Re: like sequence */
+			if (G_UNLIKELY (first_time))
+				translated_found = TRUE;
+		} else if (g_str_has_prefix (tmp, untranslated_prefix)) {
+			tmp += untranslated_prefix_len;
+			tmp = g_strchug (tmp);
+		} else {
+			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;
+			}
+		}
+		first_time = FALSE;
+	} while (tmp);
+
+	if (!g_strcmp0 (subject, tmp)) {
+		/* normal case */
+		retval = g_strdup_printf ("%s %s", untranslated_prefix, tmp);
 	} else {
-		tmp = gtk_text_buffer_get_text(b, &iter3, iter, FALSE);
+		if (translated_found) {
+			/* Found a translated prefix, i.e, "VS:" in Finish */
+			retval = g_strdup_printf ("%s %s", prefix, tmp);
+		} else {
+			retval = g_strdup_printf ("%s %s", untranslated_prefix, tmp);
+		}
+	}
+	g_free (subject_dup);
+	g_free (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)
+{
+	gchar *dup, *token, *ptr = NULL, *result;
+	GString *filtered_emails;
+	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 (!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 (!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
+				g_string_append_printf (filtered_emails, ",%s", g_strstrip (token));
+		}
+		token = strtok_r (NULL, ",", &ptr);
+	}
+	result = filtered_emails->str;
+
+	/* Clean */
+	g_free (email_address);
+	g_free (dup);
+	g_string_free (filtered_emails, FALSE);
+
+	return result;
+}
+
+
+gchar*
+modest_text_utils_remove_duplicate_addresses (const gchar *address_list)
+{
+	GSList *addresses, *cursor;
+	GHashTable *table;
+	gchar *new_list = NULL;
+	
+	g_return_val_if_fail (address_list, NULL);
+
+	table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
+	addresses = modest_text_utils_split_addresses_list (address_list);
+
+	cursor = addresses;
+	while (cursor) {
+		const gchar* address = (const gchar*)cursor->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) {
+			gchar *tmp;
+
+			/* Include the full address and not only the
+			   email in the returned list */
+			if (!new_list) {
+				tmp = g_strdup (address);
+			} else {
+				tmp = g_strjoin (",", new_list, address, NULL);
+				g_free (new_list);
+			}
+			new_list = tmp;
+			
+			g_hash_table_insert (table, (gchar*)email, GINT_TO_POINTER(1));
+		}
+		cursor = g_slist_next (cursor);
 	}
-	line = g_string_new(tmp);
+
+	g_hash_table_unref (table);
+	g_slist_foreach (addresses, (GFunc)g_free, NULL);
+	g_slist_free (addresses);
+
+	if (new_list == NULL)
+		new_list = g_strdup ("");
+
+	return new_list;
+}
+
+
+static void
+modest_text_utils_convert_buffer_to_html_start (GString *html, const gchar *data, gssize n)
+{
+	guint		i;
+	gboolean	space_seen = FALSE;
+	guint           break_dist = 0; /* distance since last break point */
+
+	if (n == -1)
+		n = strlen (data);
+
+	/* replace with special html chars where needed*/
+	for (i = 0; i != n; ++i)  {
+		guchar kar = data[i];
 		
-	gtk_text_iter_forward_line(iter);
+		if (space_seen && kar != ' ') {
+			g_string_append (html, "&#32;");
+			space_seen = FALSE;
+		}
+		
+		/* we artificially insert a breakpoint (newline)
+		 * after 256, to make sure our lines are not so long
+		 * they will DOS the regexping later
+		 * Also, check that kar is ASCII to make sure that we
+		 * don't break a UTF8 char in two
+		 */
+		if (++break_dist >= 256 && kar < 127) {
+			g_string_append_c (html, '\n');
+			break_dist = 0;
+		}
+		
+		switch (kar) {
+		case 0:
+		case MARK_AMP:
+		case MARK_AMP_URI:	
+			/* this is a temp place holder for '&'; we can only
+				* set the real '&' after hyperlink translation, otherwise
+				* we might screw that up */
+			break; /* ignore embedded \0s and MARK_AMP */	
+		case '<'  : g_string_append (html, MARK_AMP_STR "lt;");   break;
+		case '>'  : g_string_append (html, MARK_AMP_STR "gt;");   break;
+		case '&'  : g_string_append (html, MARK_AMP_URI_STR "amp;");  break; /* special case */
+		case '"'  : g_string_append (html, MARK_AMP_STR "quot;");  break;
+
+		/* don't convert &apos; --> wpeditor will try to re-convert it... */	
+		//case '\'' : g_string_append (html, "&apos;"); break;
+		case '\n' : g_string_append (html, "<br>\n");break_dist= 0; break;
+		case '\t' : g_string_append (html, MARK_AMP_STR "nbsp;" MARK_AMP_STR "nbsp;" MARK_AMP_STR "nbsp; ");
+			break_dist=0; break; /* note the space at the end*/
+		case ' ':
+			break_dist = 0;
+			if (space_seen) { /* second space in a row */
+				g_string_append (html, "&nbsp; ");
+			} else
+				space_seen = TRUE;
+			break;
+		default:
+			g_string_append_c (html, kar);
+		}
+	}
+}
+
+
+static void
+modest_text_utils_convert_buffer_to_html_finish (GString *html)
+{
+	int i;
+	/* replace all our MARK_AMPs with real ones */
+	for (i = 0; i != html->len; ++i)
+		if ((html->str)[i] == MARK_AMP || (html->str)[i] == MARK_AMP_URI)
+			(html->str)[i] = '&';
+}
+
+
+gchar*
+modest_text_utils_convert_to_html (const gchar *data)
+{
+	GString		*html;	    
+	gsize           len;
+
+	g_return_val_if_fail (data, NULL);
+	
+	if (!data)
+		return NULL;
+
+	len = strlen (data);
+	html = g_string_sized_new (1.5 * len);	/* just a  guess... */
+
+	g_string_append_printf (html,
+				"<html><head>"
+				"<meta http-equiv=\"content-type\" content=\"text/html; charset=utf8\">"
+				"</head>"
+				"<body>");
+
+	modest_text_utils_convert_buffer_to_html_start (html, data, -1);
+	
+	g_string_append (html, "</body></html>");
+
+	if (len <= HYPERLINKIFY_MAX_LENGTH)
+		hyperlinkify_plain_text (html, 0);
+
+	modest_text_utils_convert_buffer_to_html_finish (html);
+	
+	return g_string_free (html, FALSE);
+}
+
+gchar *
+modest_text_utils_convert_to_html_body (const gchar *data, gssize n, gboolean hyperlinkify)
+{
+	GString		*html;	    
+
+	g_return_val_if_fail (data, NULL);
+
+	if (!data)
+		return NULL;
+
+	if (n == -1) 
+		n = strlen (data);
+	html = g_string_sized_new (1.5 * n);	/* just a  guess... */
+
+	modest_text_utils_convert_buffer_to_html_start (html, data, n);
+
+	if (hyperlinkify && (n < HYPERLINKIFY_MAX_LENGTH))
+		hyperlinkify_plain_text (html, 0);
+
+	modest_text_utils_convert_buffer_to_html_finish (html);
 	
-	return line;
+	return g_string_free (html, FALSE);
+}
+
+void
+modest_text_utils_get_addresses_indexes (const gchar *addresses, GSList **start_indexes, GSList **end_indexes)
+{
+	GString *str;
+	gchar *start, *cur;
+
+	if (!addresses)
+		return;
+
+	if (strlen (addresses) == 0)
+		return;
+
+	str = g_string_new ("");
+	start = (gchar*) addresses;
+	cur = (gchar*) addresses;
+
+	for (cur = start; *cur != '\0'; cur = g_utf8_next_char (cur)) {
+		if (*cur == ',' || *cur == ';') {
+			gint *start_index, *end_index;
+			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' && *next_char != '\0')
+				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 (cur);
+		}
+	}
+
+	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);
+	}
+
+	if (*start_indexes)
+		*start_indexes = g_slist_reverse (*start_indexes);
+	if (*end_indexes)
+		*end_indexes = g_slist_reverse (*end_indexes);
+}
+
+
+GSList *
+modest_text_utils_split_addresses_list (const gchar *addresses)
+{
+	GSList *head;
+	const gchar *my_addrs = addresses;
+	const gchar *end;
+	gchar *addr;
+	gboolean after_at = FALSE;
+
+	g_return_val_if_fail (addresses, NULL);
+
+	/* skip any space, ',', ';' '\n' at the start */
+	while (my_addrs && (my_addrs[0] == ' ' || my_addrs[0] == ',' ||
+			    my_addrs[0] == ';' || my_addrs[0] == '\n'))
+	       ++my_addrs;
+
+	/* are we at the end of addresses list? */
+	if (!my_addrs[0])
+		return NULL;
+
+	/* 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] != ';' && !(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);
+	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,
+					     guint position,
+					     guint *start,
+					     guint *end)
+{
+	gchar *current = NULL;
+	gint range_start = 0;
+	gint range_end = 0;
+	gint index;
+	gboolean is_quoted = FALSE;
+
+	g_return_if_fail (recipients_list);
+	g_return_if_fail (position < g_utf8_strlen(recipients_list, -1));
+		
+	index = 0;
+	for (current = (gchar *) recipients_list; *current != '\0';
+	     current = g_utf8_find_next_char (current, NULL)) {
+		gunichar c = g_utf8_get_char (current);
+
+		if ((c == ',') && (!is_quoted)) {
+			if (index < position) {
+				range_start = index + 1;
+			} else {
+				break;
+			}
+		} else if (c == '\"') {
+			is_quoted = !is_quoted;
+		} else if ((c == ' ') &&(range_start == index)) {
+			range_start ++;
+		}
+		index ++;
+		range_end = index;
+	}
+
+	if (start)
+		*start = range_start;
+	if (end)
+		*end = range_end;
+}
+
+gchar *
+modest_text_utils_address_with_standard_length (const gchar *recipients_list)
+{
+	gchar ** splitted;
+	gchar ** current;
+	GString *buffer = g_string_new ("");
+
+	splitted = g_strsplit (recipients_list, "\n", 0);
+	current = splitted;
+	while (*current) {
+		gchar *line;
+		if (current != splitted)
+			buffer = g_string_append_c (buffer, '\n');
+		line = g_strndup (*splitted, 1000);
+		buffer = g_string_append (buffer, line);
+		g_free (line);
+		current++;
+	}
+
+	g_strfreev (splitted);
+
+	return g_string_free (buffer, FALSE);
 }
 
+
+/* ******************************************************************* */
+/* ************************* UTILIY FUNCTIONS ************************ */
+/* ******************************************************************* */
+
+static GString *
+get_next_line (const gchar * b, const gsize blen, const gchar * iter)
+{
+	GString *gs;
+	const gchar *i0;
+	
+	if (iter > b + blen)
+		return g_string_new("");
+	
+	i0 = iter;
+	while (iter[0]) {
+		if (iter[0] == '\n')
+			break;
+		iter++;
+	}
+	gs = g_string_new_len (i0, iter - i0);
+	return gs;
+}
 static int
-get_indent_level(const char *l)
+get_indent_level (const char *l)
 {
 	int indent = 0;
-	
+
 	while (l[0]) {
 		if (l[0] == '>') {
 			indent++;
@@ -79,29 +878,31 @@ get_indent_level(const char *l)
 			break;
 		}
 		l++;
-		
+
 	}
 
-	/* 	if we hit the signature marker "-- ", we return -(indent + 1). This
- 	* 	stops reformatting.
- 	*/
-	if (strcmp(l, "-- ") == 0) {
-		return -1-indent;
+	/*      if we hit the signature marker "-- ", we return -(indent + 1). This
+	 *      stops reformatting.
+	 */
+	if (strcmp (l, MODEST_TEXT_UTILS_SIGNATURE_MARKER) == 0) {
+		return -1 - indent;
 	} else {
 		return indent;
 	}
 }
 
 static void
-unquote_line(GString *l) {
-	GString *r;
+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;
@@ -112,56 +913,64 @@ unquote_line(GString *l) {
 }
 
 static void
-append_quoted(GString *buf, int indent, const GString *str, const int cutpoint) {
+append_quoted (GString * buf, const gchar *quote_symbol,
+	       int indent, const GString * str,
+	       const int cutpoint)
+{
 	int i;
-	
-	indent = indent < 0? abs(indent) -1 : indent;
-	for (i=0; i<=indent; i++) {
-		g_string_append(buf, "> ");
+	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, quote_concat);
 	}
+	g_free (quote_concat);
 	if (cutpoint > 0) {
-		g_string_append_len(buf, str->str, cutpoint);
+		g_string_append_len (buf, str->str, cutpoint);
 	} else {
-		g_string_append(buf, str->str);
+		g_string_append (buf, str->str);
 	}
-	g_string_append(buf, "\n");
+	g_string_append (buf, "\n");
 }
 
 static int
-get_breakpoint_utf8(const gchar *s, gint indent, const gint limit) {
+get_breakpoint_utf8 (const gchar * s, gint indent, const gint limit)
+{
 	gint index = 0;
 	const gchar *pos, *last;
 	gunichar *uni;
-	
-	indent = indent < 0? abs(indent) -1 : indent;
-	
+
+	indent = indent < 0 ? abs (indent) - 1 : indent;
+
 	last = NULL;
 	pos = s;
-	uni = g_utf8_to_ucs4_fast(s, -1, NULL);
+	uni = g_utf8_to_ucs4_fast (s, -1, NULL);
 	while (pos[0]) {
 		if ((index + 2 * indent > limit) && last) {
-			g_free(uni);
+			g_free (uni);
 			return last - s;
 		}
-		if (g_unichar_isspace(uni[index])) {
+		if (g_unichar_isspace (uni[index])) {
 			last = pos;
 		}
-		pos = g_utf8_next_char(pos);
+		pos = g_utf8_next_char (pos);
 		index++;
 	}
-	g_free(uni);
-	return strlen(s);
+	g_free (uni);
+	return strlen (s);
 }
 
 static int
-get_breakpoint_ascii(const gchar *s, const gint indent, const gint limit) {
+get_breakpoint_ascii (const gchar * s, const gint indent, const gint limit)
+{
 	gint i, last;
-	
-	last = strlen(s);
+
+	last = strlen (s);
 	if (last + 2 * indent < limit)
 		return last;
-	
-	for ( i=strlen(s) ; i>0; i-- ) {
+
+	for (i = strlen (s); i > 0; i--) {
 		if (s[i] == ' ') {
 			if (i + 2 * indent <= limit) {
 				return i;
@@ -174,76 +983,1263 @@ get_breakpoint_ascii(const gchar *s, const gint indent, const gint limit) {
 }
 
 static int
-get_breakpoint(const gchar *s, const gint indent, const gint limit) {
+get_breakpoint (const gchar * s, const gint indent, const gint limit)
+{
+
+	if (g_utf8_validate (s, -1, NULL)) {
+		return get_breakpoint_utf8 (s, indent, limit);
+	} else {		/* assume ASCII */
+		//g_warning("invalid UTF-8 in msg");
+		return get_breakpoint_ascii (s, indent, limit);
+	}
+}
+
+static gchar *
+cite (const time_t sent_date, const gchar *from)
+{
+	return g_strdup (_("mcen_ia_editor_original_message"));
+}
+
+static gchar *
+quoted_attachments (GList *attachments)
+{
+	GList *node = NULL;
+	GString *result = g_string_new ("");
+	for (node = attachments; node != NULL; node = g_list_next (node)) {
+		gchar *filename = (gchar *) node->data;
+		g_string_append_printf ( result, "%s %s\n", _("mcen_ia_editor_attach_filename"), filename);
+	}
+
+	return g_string_free (result, FALSE);
+
+}
+
+static GString *
+modest_text_utils_quote_body (GString *output, const gchar *text,
+			      const gchar *quote_symbol,
+			      int limit)
+{
+
+	const gchar *iter;
+	gsize len;
+	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, quote_symbol);
+
+		if (remaining->len) {
+			if (l->len && indent == rem_indent) {
+				g_string_prepend (l, " ");
+				g_string_prepend (l, remaining->str);
+			} else {
+				do {
+					gunichar remaining_first;
+					breakpoint =
+						get_breakpoint (remaining->str,
+								rem_indent,
+								limit);
+					append_quoted (output, quote_symbol, rem_indent,
+						       remaining, breakpoint);
+					g_string_erase (remaining, 0,
+							breakpoint);
+					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);
+			}
+		}
+		g_string_free (remaining, TRUE);
+		breakpoint = get_breakpoint (l->str, indent, limit);
+		remaining = g_string_new (l->str + breakpoint);
+		if (remaining->str[0] == ' ') {
+			g_string_erase (remaining, 0, 1);
+		}
+		rem_indent = indent;
+		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);
+
+	return g_string_free (q, FALSE);
+}
+
+static void
+quote_html_add_to_gstring (GString *string,
+			   const gchar *text)
+{
+	if (text && strcmp (text, "")) {
+		gchar *html_text = modest_text_utils_convert_to_html_body (text, -1, TRUE);
+		g_string_append_printf (string, "%s<br/>", html_text);
+		g_free (html_text);
+	}
+}
+
+static gchar*
+modest_text_utils_quote_html (const gchar *text, 
+			      const gchar *cite, 
+			      const gchar *signature,
+			      GList *attachments,
+			      int limit)
+{
+	GString *result_string;
+
+	result_string = 
+		g_string_new ( \
+			      "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">\n" \
+			      "<html>\n"				\
+			      "<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, 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) ? 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);
+			g_free (attachments_string);
+		}
+		g_string_append (result_string, "</pre>");
+	}
+	g_string_append (result_string, "</body>");
+	g_string_append (result_string, "</html>");
+
+	return g_string_free (result_string, FALSE);
+}
+
+static gint 
+cmp_offsets_reverse (const url_match_t *match1, const url_match_t *match2)
+{
+	return match2->offset - match1->offset;
+}
+
+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
+compile_patterns ()
+{
+	guint i;
+	const size_t pattern_num = sizeof(patterns)/sizeof(url_match_pattern_t);
+	for (i = 0; i != pattern_num; ++i) {
+		patterns[i].preg = g_slice_new0 (regex_t);
+		
+		/* this should not happen */
+		if (regcomp (patterns[i].preg, patterns[i].regex,
+			     REG_ICASE|REG_EXTENDED|REG_NEWLINE) != 0) {
+			g_warning ("%s: error in regexp:\n%s\n", __FUNCTION__, patterns[i].regex);
+			return FALSE;
+		}
+	}
+	return TRUE;
+}
+
+static void 
+free_patterns ()
+{
+	guint i;
+	const size_t pattern_num = sizeof(patterns)/sizeof(url_match_pattern_t);
+	for (i = 0; i != pattern_num; ++i) {
+		regfree (patterns[i].preg);
+		g_slice_free  (regex_t, patterns[i].preg);
+	} /* don't free patterns itself -- it's static */
+}
+
+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);
+}
+
+
+static GSList*
+get_url_matches (GString *txt, gint offset)
+{
+	regmatch_t rm;
+        guint rv, i, tmp_offset = 0;
+        GSList *match_list = NULL;
+
+	const size_t pattern_num = sizeof(patterns)/sizeof(url_match_pattern_t);
+
+	/* initalize the regexps */
+	modest_text_utils_hyperlinkify_begin ();
+
+        /* find all the matches */
+	for (i = 0; i != pattern_num; ++i) {
+		tmp_offset     = offset;	
+		while (1) {
+			url_match_t *match;
+			gboolean is_submatch;
+			GSList *cursor;
+			
+			if ((rv = regexec (patterns[i].preg, txt->str + tmp_offset, 1, &rm, 0)) != 0) {
+				g_return_val_if_fail (rv == REG_NOMATCH, NULL); /* this should not happen */
+				break; /* try next regexp */ 
+			}
+			if (rm.rm_so == -1)
+				break;
+			
+			is_submatch = FALSE;
+			/* check  old matches to see if this has already been matched */
+			cursor = match_list;
+			while (cursor && !is_submatch) {
+				const url_match_t *old_match =
+					(const url_match_t *) cursor->data;
+				guint new_offset = tmp_offset + rm.rm_so;
+				is_submatch = (new_offset >  old_match->offset &&
+					       new_offset <  old_match->offset + old_match->len);
+				cursor = g_slist_next (cursor);
+			}
+
+			if (!is_submatch) {
+				/* make a list of our matches (<offset, len, prefix> tupels)*/
+				match = g_slice_new (url_match_t);
+				match->offset = tmp_offset + rm.rm_so;
+				match->len    = rm.rm_eo - rm.rm_so;
+				match->prefix = patterns[i].prefix;
+				match_list = g_slist_prepend (match_list, match);
+			}		
+			tmp_offset += rm.rm_eo;
+		}
+	}
+
+	modest_text_utils_hyperlinkify_end ();
+	
+	/* now sort the list, so the matches are in reverse order of occurence.
+	 * that way, we can do the replacements starting from the end, so we don't need
+	 * to recalculate the offsets
+	 */
+	match_list = g_slist_sort (match_list,
+				   (GCompareFunc)cmp_offsets_reverse); 
+	return match_list;	
+}
+
+
+
+/* replace all occurences of needle in haystack with repl*/
+static gchar*
+replace_string (const gchar *haystack, const gchar *needle, gchar repl)
+{
+	gchar *str, *cursor;
+
+	if (!haystack || !needle || strlen(needle) == 0)
+		return haystack ? g_strdup(haystack) : NULL;
 	
-	if (g_utf8_validate(s, -1, NULL)) {
-		return get_breakpoint_utf8(s, indent, limit);
-	} else { /* assume ASCII */
-		g_warning("invalid UTF-8 in msg");
-		return get_breakpoint_ascii(s, indent, limit);
+	str = g_strdup (haystack);
+
+	for (cursor = str; cursor && *cursor; ++cursor) {
+		if (g_str_has_prefix (cursor, needle)) {
+			cursor[0] = repl;
+			memmove (cursor + 1,
+				 cursor + strlen (needle),
+				 strlen (cursor + strlen (needle)) + 1);
+		}
 	}
-}	
+	
+	return str;
+}
 
+static void
+hyperlinkify_plain_text (GString *txt, gint offset)
+{
+	GSList *cursor;
+	GSList *match_list = get_url_matches (txt, offset);
 
-gchar *
-modest_text_utils_quote(const gchar *to_quote, const gchar *from, const time_t sent_date, const int limit)
+	/* we will work backwards, so the offsets stay valid */
+	for (cursor = match_list; cursor; cursor = cursor->next) {
+
+		url_match_t *match = (url_match_t*) cursor->data;
+		gchar *url  = g_strndup (txt->str + match->offset, match->len);
+		gchar *repl = NULL; /* replacement  */
+
+		/* the string still contains $(MARK_AMP_URI_STR)"amp;" for each
+		 * '&' in the original, because of the text->html conversion.
+		 * in the href-URL (and only there), we must convert that back to
+		 * '&'
+		 */
+		gchar *href_url = replace_string (url, MARK_AMP_URI_STR "amp;", '&');
+		
+		/* the prefix is NULL: use the one that is already there */
+		repl = g_strdup_printf ("<a href=\"%s%s\">%s</a>",
+					match->prefix ? match->prefix : EMPTY_STRING, 
+					href_url, url);
+
+		/* replace the old thing with our hyperlink
+		 * replacement thing */
+		g_string_erase  (txt, match->offset, match->len);
+		g_string_insert (txt, match->offset, repl);
+		
+		g_free (url);
+		g_free (repl);
+		g_free (href_url);
+
+		g_slice_free (url_match_t, match);	
+	}
+	
+	g_slist_free (match_list);
+}
+
+void
+modest_text_utils_hyperlinkify (GString *string_buffer)
+{
+	gchar *after_body;
+	gint offset = 0;
+
+	after_body = strstr (string_buffer->str, "<body>");
+	if (after_body != NULL)
+		offset = after_body - string_buffer->str;
+	hyperlinkify_plain_text (string_buffer, offset);
+}
+
+
+/* for optimization reasons, we change the string in-place */
+void
+modest_text_utils_get_display_address (gchar *address)
 {
-	GtkTextBuffer *buf;
+	int i;
+
+	g_return_if_fail (address);
+	
+	if (!address)
+		return;
+	
+	/* should not be needed, and otherwise, we probably won't screw up the address
+	 * more than it already is :) 
+	 * g_return_val_if_fail (g_utf8_validate (address, -1, NULL), NULL);
+	 * */
 	
-	buf = gtk_text_buffer_new (NULL);
-	gtk_text_buffer_set_text(buf, to_quote, -1);
-	return modest_text_utils_quote_text_buffer(buf, from, sent_date, limit);
+	/* remove leading whitespace */
+	if (address[0] == ' ')
+		g_strchug (address);
+		
+	for (i = 0; address[i]; ++i) {
+		if (address[i] == '<') {
+			if (G_UNLIKELY(i == 0)) {
+				break; /* there's nothing else, leave it */
+			}else {
+				address[i] = '\0'; /* terminate the string here */
+				break;
+			}
+		}
+	}
+
+	g_strchomp (address);
 }
 
+
 gchar *
-modest_text_utils_quote_text_buffer(GtkTextBuffer *buf, const gchar *from, const time_t sent_date, const int limit)
+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 *
+modest_text_utils_get_email_address (const gchar *full_address)
+{
+	const gchar *left, *right;
+
+	g_return_val_if_fail (full_address, NULL);
 	
-	GtkTextIter iter;
-	gint indent, breakpoint, rem_indent;
-	gchar sent_str[101];
-	GString *q, *l, *remaining; /* quoted msg, line */
+	if (!full_address)
+		return NULL;
+	
+	g_return_val_if_fail (g_utf8_validate (full_address, -1, NULL), NULL);
+	
+	left = g_strrstr_len (full_address, strlen(full_address), "<");
+	if (left == NULL)
+		return g_strdup (full_address);
+
+	right = g_strstr_len (left, strlen(left), ">");
+	if (right == NULL)
+		return g_strdup (full_address);
+
+	return g_strndup (left + 1, right - left - 1);
+}
+
+gint 
+modest_text_utils_get_subject_prefix_len (const gchar *sub)
+{
+	gint prefix_len = 0;	
+
+	g_return_val_if_fail (sub, 0);
+
+	if (!sub)
+		return 0;
+	
+	/* optimization: "Re", "RE", "re","Fwd", "FWD", "fwd","FW","Fw", "fw" */
+	if (sub[0] != 'R' && sub[0] != 'F' && sub[0] != 'r' && sub[0] != 'f')
+		return 0;
+	else if (sub[0] && sub[1] != 'e' && sub[1] != 'E' && sub[1] != 'w' && sub[1] != 'W')
+		return 0;
+
+	prefix_len = 2;
+	if (sub[2] == 'd')
+		++prefix_len;
+
+	/* skip over a [...] block */
+	if (sub[prefix_len] == '[') {
+		int c = prefix_len + 1;
+		while (sub[c] && sub[c] != ']')
+			++c;
+		if (!sub[c])
+			return 0; /* no end to the ']' found */
+		else
+			prefix_len = c + 1;
+	}
+
+	/* did we find the ':' ? */
+	if (sub[prefix_len] == ':') {
+		++prefix_len;
+		if (sub[prefix_len] == ' ')
+			++prefix_len;
+		prefix_len += modest_text_utils_get_subject_prefix_len (sub + prefix_len);
+/* 		g_warning ("['%s','%s']", sub, (char*) sub + prefix_len); */
+		return prefix_len;
+	} else
+		return 0;
+}
+
+
+gint
+modest_text_utils_utf8_strcmp (const gchar* s1, const gchar *s2, gboolean insensitive)
+{
+
+/* work even when s1 and/or s2 == NULL */
+	if (G_UNLIKELY(s1 == s2))
+		return 0;
+	if (G_UNLIKELY(!s1))
+		return -1;
+	if (G_UNLIKELY(!s2))
+		return 1;
+	
+	/* if it's not case sensitive */
+	if (!insensitive) {
+
+		/* optimization: shortcut if first char is ascii */ 
+		if (((s1[0] & 0x80)== 0) && ((s2[0] & 0x80) == 0) &&
+		    (s1[0] != s2[0])) 
+			return s1[0] - s2[0];
+		
+		return g_utf8_collate (s1, s2);
+
+	} else {
+		gint result;
+		gchar *n1, *n2;
+
+		/* optimization: shortcut if first char is ascii */ 
+		if (((s1[0] & 0x80) == 0) && ((s2[0] & 0x80) == 0) &&
+		    (tolower(s1[0]) != tolower (s2[0]))) 
+			return tolower(s1[0]) - tolower(s2[0]);
+		
+		n1 = g_utf8_strdown (s1, -1);
+		n2 = g_utf8_strdown (s2, -1);
+		
+		result = g_utf8_collate (n1, n2);
+		
+		g_free (n1);
+		g_free (n2);
+	
+		return result;
+	}
+}
+
+
+const gchar*
+modest_text_utils_get_display_date (time_t date)
+{
+#define DATE_BUF_SIZE 64 
+	static gchar date_buf[DATE_BUF_SIZE];
+	
+	/* calculate the # of days since epoch for 
+ 	 * for today and for the date provided 
+ 	 * based on idea from pvanhoof */
+	int day      = time(NULL) / (24 * 60 * 60);
+	int date_day = date       / (24 * 60 * 60);
+
+	/* 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! */
+}
+
+
+
+gboolean
+modest_text_utils_validate_folder_name (const gchar *folder_name)
+{
+	/* based on http://msdn2.microsoft.com/en-us/library/aa365247.aspx,
+	 * with some extras */
+	
+	guint len;
+	gint i;
+	const gchar **cursor = NULL;
+	const gchar *forbidden_names[] = { /* windows does not like these */
+		"CON", "PRN", "AUX", "NUL", ".", "..", "cur", "tmp", "new", 
+		NULL /* cur, tmp, new are reserved for Maildir */
+	};
+	
+	/* cannot be NULL */
+	if (!folder_name) 
+		return FALSE;
+
+	/* cannot be empty */
+	len = strlen(folder_name);
+	if (len == 0)
+		return FALSE;
+	
+	/* cannot start with a dot, vfat does not seem to like that */
+	if (folder_name[0] == '.')
+		return FALSE;
+
+	/* cannot start or end with a space */
+	if (g_ascii_isspace(folder_name[0]) || g_ascii_isspace(folder_name[len - 1]))
+		return FALSE; 
+
+	/* cannot contain a forbidden char */	
+	for (i = 0; i < len; i++)
+		if (modest_text_utils_is_forbidden_char (folder_name[i], FOLDER_NAME_FORBIDDEN_CHARS))
+			return FALSE;
+
+	/* Cannot contain Windows port numbers. I'd like to use GRegex
+	   but it's still not available in Maemo. sergio */
+	if (!g_ascii_strncasecmp (folder_name, "LPT", 3) ||
+	    !g_ascii_strncasecmp (folder_name, "COM", 3)) {
+		glong val;
+		gchar *endptr;
+
+		/* We skip the first 3 characters for the
+		   comparison */
+		val = strtol(folder_name+3, &endptr, 10);
+
+		/* If the conversion to long succeeded then the string
+		   is not valid for us */
+		if (*endptr == '\0')
+			return FALSE;
+		else
+			return TRUE;
+	}
+	
+	/* cannot contain a forbidden word */
+	if (len <= 4) {
+		for (cursor = forbidden_names; cursor && *cursor; ++cursor) {
+			if (g_ascii_strcasecmp (folder_name, *cursor) == 0)
+				return FALSE;
+		}
+	}
+
+	return TRUE; /* it's valid! */
+}
+
+
+
+gboolean
+modest_text_utils_validate_domain_name (const gchar *domain)
+{
+	gboolean valid = FALSE;
+	regex_t rx;
+	const gchar* domain_regex = "^([a-z0-9-]*[a-z0-9]\\.)+[a-z0-9-]*[a-z0-9]$";
+
+	g_return_val_if_fail (domain, FALSE);
+	
+	if (!domain)
+		return FALSE;
+	
+	memset (&rx, 0, sizeof(regex_t)); /* coverity wants this... */
+		
+	/* domain name: all alphanum or '-' or '.',
+	 * but beginning/ending in alphanum */	
+	if (regcomp (&rx, domain_regex, REG_ICASE|REG_EXTENDED|REG_NOSUB)) {
+		g_warning ("BUG: error in regexp");
+		return FALSE;
+	}
+	
+	valid = (regexec (&rx, domain, 1, NULL, 0) == 0);
+	regfree (&rx);
+		
+	return valid;
+}
+
+
+
+gboolean
+modest_text_utils_validate_email_address (const gchar *email_address,
+					  const gchar **invalid_char_position)
+{
+	int count = 0;
+	const gchar *c = NULL, *domain = NULL;
+	static gchar *rfc822_specials = "()<>@,;:\\\"[]&";
 	
-	/* format sent_date */
-	strftime(sent_str, 100, "%c", localtime(&sent_date));
-	q = g_string_new("");
-	g_string_printf(q, "On %s, %s wrote:\n", sent_str, from);
+	if (invalid_char_position)
+		*invalid_char_position = NULL;
 	
-	/* remaining will store the rest of the line if we have to break it */
-	remaining = g_string_new("");
+	g_return_val_if_fail (email_address, FALSE);
 	
+	/* check that the email adress contains exactly one @ */
+	if (!strstr(email_address, "@") || 
+			(strstr(email_address, "@") != g_strrstr(email_address, "@"))) 
+		return FALSE;
 	
-	gtk_text_buffer_get_iter_at_line(buf, &iter, 0);
+	/* first we validate the name portion (name@domain) */
+	for (c = email_address;  *c;  c++) {
+		if (*c == '\"' && 
+		    (c == email_address || 
+		     *(c - 1) == '.' || 
+		     *(c - 1) == '\"')) {
+			while (*++c) {
+				if (*c == '\"') 
+					break;
+				if (*c == '\\' && (*++c == ' ')) 
+					continue;
+				if (*c <= ' ' || *c >= 127) 
+					return FALSE;
+			}
+			if (!*c++) 
+				return FALSE;
+			if (*c == '@') 
+				break;
+			if (*c != '.') 
+				return FALSE;
+			continue;
+		}
+		if (*c == '@') 
+			break;
+		if (*c <= ' ' || *c >= 127) 
+			return FALSE;
+		if (strchr(rfc822_specials, *c)) {
+			if (invalid_char_position)
+				*invalid_char_position = c;
+			return FALSE;
+		}
+	}
+	if (c == email_address || *(c - 1) == '.') 
+		return FALSE;
+
+	/* next we validate the domain portion (name@domain) */
+	if (!*(domain = ++c)) 
+		return FALSE;
 	do {
-		l = get_next_line(buf, &iter);
-		indent = get_indent_level(l->str);
-		unquote_line(l);
+		if (*c == '.') {
+			if (c == domain || *(c - 1) == '.' || *(c + 1) == '\0') 
+				return FALSE;
+			count++;
+		}
+		if (*c <= ' ' || *c >= 127) 
+			return FALSE;
+		if (strchr(rfc822_specials, *c)) {
+			if (invalid_char_position)
+				*invalid_char_position = c;
+			return FALSE;
+		}
+	} while (*++c);
+
+	return (count >= 1) ? TRUE : FALSE;
+}
+
+gboolean 
+modest_text_utils_validate_recipient (const gchar *recipient, const gchar **invalid_char_position)
+{
+	gchar *stripped, *current;
+	gchar *right_part;
+	gboolean has_error = FALSE;
+
+	if (invalid_char_position)
+		*invalid_char_position = NULL;
+	
+	g_return_val_if_fail (recipient, FALSE);
+	
+	if (modest_text_utils_validate_email_address (recipient, invalid_char_position))
+		return TRUE;
+
+	stripped = g_strdup (recipient);
+	stripped = g_strstrip (stripped);
+	current = stripped;
+
+	if (*current == '\0') {
+		g_free (stripped);
+		return FALSE;
+	}
+
+	/* 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)) {
+			if (*current == '\\') {
+				/* TODO: This causes a warning, which breaks the build, 
+				 * because a gchar cannot be < 0.
+				 * murrayc. 
+				if (current[1] <0) {
+					has_error = TRUE;
+					break;
+				}
+				*/
+			} else if (*current == '\"') {
+				has_error = FALSE;
+				current = g_utf8_next_char (current);
+				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)) {
+			if (*current == '<') {
+				has_error = FALSE;
+				break;
+			}
+		}
+	}
 		
-		if (remaining->len) {
-			if (l->len && indent == rem_indent) {
-				g_string_prepend(l, " ");
-				g_string_prepend(l, remaining->str);
+	if (has_error) {
+		g_free (stripped);
+		return FALSE;
+	}
+
+	right_part = g_strdup (current);
+	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;
+		gboolean valid;
+
+		address = g_strndup (right_part+1, strlen (right_part) - 2);
+		g_free (right_part);
+		valid = modest_text_utils_validate_email_address (address, invalid_char_position);
+		g_free (address);
+		return valid;
+	} else {
+		g_free (right_part);
+		return FALSE;
+	}
+}
+
+
+gchar *
+modest_text_utils_get_display_size (guint64 size)
+{
+	const guint KB=1024;
+	const guint MB=1024 * KB;
+	const guint GB=1024 * MB;
+
+	if (size == 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"), (int) 1);
+	else if (KB <= size && size < 100 * 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"), (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"), (float) size / MB);
+	else
+		return g_strdup_printf (_FM("sfil_li_size_1gb_or_greater"), (float) size / GB);
+}
+
+static gchar *
+get_email_from_address (const gchar * address)
+{
+	gchar *left_limit, *right_limit;
+
+	left_limit = strstr (address, "<");
+	right_limit = g_strrstr (address, ">");
+
+	if ((left_limit == NULL)||(right_limit == NULL)|| (left_limit > right_limit))
+		return g_strdup (address);
+	else
+		return g_strndup (left_limit + 1, (right_limit - left_limit) - 1);
+}
+
+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,
+				(color->green >> 12) & 0xf, (color->green >> 8) & 0xf,
+				(color->green >>  4) & 0xf, (color->green)      & 0xf,
+				(color->blue >> 12)  & 0xf, (color->blue >> 8)  & 0xf,
+				(color->blue >>  4)  & 0xf, (color->blue)       & 0xf);
+}
+
+gchar *
+modest_text_utils_text_buffer_get_text (GtkTextBuffer *buffer)
+{
+	GtkTextIter start, end;
+	gchar *slice, *current;
+	GString *result = g_string_new ("");
+
+	g_return_val_if_fail (buffer && GTK_IS_TEXT_BUFFER (buffer), NULL);
+	
+	gtk_text_buffer_get_start_iter (buffer, &start);
+	gtk_text_buffer_get_end_iter (buffer, &end);
+
+	slice = gtk_text_buffer_get_slice (buffer, &start, &end, FALSE);
+	current = slice;
+
+	while (current && current != '\0') {
+		if (g_utf8_get_char (current) == 0xFFFC) {
+			result = g_string_append_c (result, ' ');
+			current = g_utf8_next_char (current);
+		} else {
+			gchar *next = g_utf8_strchr (current, -1, 0xFFFC);
+			if (next == NULL) {
+				result = g_string_append (result, current);
 			} else {
-				do {
-					breakpoint = get_breakpoint(remaining->str, rem_indent, limit);
-					append_quoted(q, rem_indent, remaining, breakpoint);
-					g_string_erase(remaining, 0, breakpoint);
-					if (remaining->str[0] == ' ') {
-						g_string_erase(remaining, 0, 1);
-					}		
-				} while (remaining->len);
+				result = g_string_append_len (result, current, next - current);
 			}
+			current = next;
 		}
-		g_string_free(remaining, TRUE);
-		breakpoint = get_breakpoint(l->str, indent, limit);
-		remaining = g_string_new(l->str + breakpoint);
-		if (remaining->str[0] == ' ') {
-			g_string_erase(remaining, 0, 1);
+	}
+	g_free (slice);
+
+	return g_string_free (result, FALSE);
+	
+}
+
+gboolean
+modest_text_utils_is_forbidden_char (const gchar character,
+				     ModestTextUtilsForbiddenCharType type)
+{
+	gint i, len;
+	const gchar *forbidden_chars = NULL;
+	
+	/* We need to get the length in the switch because the
+	   compiler needs to know the size at compile time */
+	switch (type) {
+	case ACCOUNT_TITLE_FORBIDDEN_CHARS:
+		forbidden_chars = account_title_forbidden_chars;
+		len = G_N_ELEMENTS (account_title_forbidden_chars);
+		break;
+	case FOLDER_NAME_FORBIDDEN_CHARS:
+		forbidden_chars = folder_name_forbidden_chars;
+		len = G_N_ELEMENTS (folder_name_forbidden_chars);
+		break;
+	case USER_NAME_FORBIDDEN_NAMES:
+		forbidden_chars = user_name_forbidden_chars;
+		len = G_N_ELEMENTS (user_name_forbidden_chars);
+		break;
+	default:
+		g_return_val_if_reached (TRUE);
+	}
+
+	for (i = 0; i < len ; i++)
+		if (forbidden_chars[i] == character)
+			return TRUE;
+
+	return FALSE; /* it's valid! */
+}
+
+gchar *      
+modest_text_utils_label_get_selection (GtkLabel *label)
+{
+	gint start, end;
+	gchar *selection;
+
+	if (gtk_label_get_selection_bounds (GTK_LABEL (label), &start, &end)) {
+		const gchar *start_offset;
+		const gchar *end_offset;
+		start_offset = gtk_label_get_text (GTK_LABEL (label));
+		start_offset = g_utf8_offset_to_pointer (start_offset, start);
+		end_offset = gtk_label_get_text (GTK_LABEL (label));
+		end_offset = g_utf8_offset_to_pointer (end_offset, end);
+		selection = g_strndup (start_offset, end_offset - start_offset);
+		return selection;
+	} else {
+		return g_strdup ("");
+	}
+}
+
+static gboolean
+_forward_search_image_char (gunichar ch,
+			    gpointer userdata)
+{
+	return (ch == 0xFFFC);
+}
+
+gboolean
+modest_text_utils_buffer_selection_is_valid (GtkTextBuffer *buffer)
+{
+	gboolean result;
+	GtkTextIter start, end;
+
+	g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
+
+	result = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (buffer));
+
+	/* check there are no images in selection */
+	if (result) {
+		gtk_text_buffer_get_selection_bounds (buffer, &start, &end);
+		if (gtk_text_iter_get_char (&start)== 0xFFFC)
+			result = FALSE;
+		else {
+			gtk_text_iter_backward_char (&end);
+			if (gtk_text_iter_forward_find_char (&start, _forward_search_image_char,
+							     NULL, &end))
+				result = FALSE;
 		}
-		rem_indent = indent;
-		append_quoted(q, indent, l, breakpoint);
-		g_string_free(l, TRUE);
-	} while (remaining->str[0] || !gtk_text_iter_is_end(&iter));
+				    
+	}
+
+	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)
+{
+	const gchar *p;
+	GString *result = NULL;
+
+	if (text == NULL)
+		return NULL;
+
+	result = g_string_new ("");
+	for (p = text; *p != '\0'; p++) {
+		if (*p == '_')
+			result = g_string_append (result, "__");
+		else
+			result = g_string_append_c (result, *p);
+	}
 	
-	return g_string_free(q, FALSE);
+	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 = *cur - *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, (blank - *start));
+			*str = g_string_append_c (*str, '"');
+			*str = g_string_append_len (*str, blank, (*cur - 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);
 }