+
+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 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)
+{
+ int indent = 0;
+
+ while (l[0]) {
+ if (l[0] == '>') {
+ indent++;
+ if (l[1] == ' ') {
+ l++;
+ }
+ } else {
+ break;
+ }
+ l++;
+
+ }
+
+ /* 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, const gchar *quote_symbol)
+{
+ gchar *p;
+ gint quote_len;
+
+ p = l->str;
+ quote_len = strlen (quote_symbol);
+ while (p[0]) {
+ if (g_str_has_prefix (p, quote_symbol)) {
+ if (p[quote_len] == ' ') {
+ p += quote_len;
+ }
+ } else {
+ break;
+ }
+ p++;
+ }
+ g_string_erase (l, 0, p - l->str);
+}
+
+static void
+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, quote_concat);
+ }
+ g_free (quote_concat);
+ if (cutpoint > 0) {
+ g_string_append_len (buf, str->str, cutpoint);
+ } else {
+ g_string_append (buf, str->str);
+ }
+ g_string_append (buf, "\n");
+}
+
+static int
+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;
+
+ last = NULL;
+ pos = s;
+ uni = g_utf8_to_ucs4_fast (s, -1, NULL);
+ while (pos[0]) {
+ if ((index + 2 * indent > limit) && last) {
+ g_free (uni);
+ return last - s;
+ }
+ if (g_unichar_isspace (uni[index])) {
+ last = pos;
+ }
+ pos = g_utf8_next_char (pos);
+ index++;
+ }
+ g_free (uni);
+ return strlen (s);
+}
+
+static int
+get_breakpoint_ascii (const gchar * s, const gint indent, const gint limit)
+{
+ gint i, last;
+
+ last = strlen (s);
+ if (last + 2 * indent < limit)
+ return last;
+
+ for (i = strlen (s); i > 0; i--) {
+ if (s[i] == ' ') {
+ if (i + 2 * indent <= limit) {
+ return i;
+ } else {
+ last = i;
+ }
+ }
+ }
+ return last;
+}
+
+static int
+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;
+
+ 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);
+
+ /* 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)
+{
+ 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);
+ * */
+
+ /* 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_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);
+
+ 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 = "()<>@,;:\\\"[]&";
+
+ if (invalid_char_position)
+ *invalid_char_position = NULL;
+
+ 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;
+
+ /* 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 {
+ 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)