lib-imap: Add imap_str_is_atom()

diff --git a/src/lib-imap/imap-arg.c b/src/lib-imap/imap-arg.c
index 0b947ce81421cd1a910bf656db6cf916d5558689..a306eb2a6529b635e1a8ff1a1092295511f561d0 100644 (file)
--- a/src/lib-imap/imap-arg.c
+++ b/src/lib-imap/imap-arg.c
@@ -135,3 +135,14 @@ bool imap_arg_atom_equals(const struct imap_arg *arg, const char *str)
                return FALSE;
        return strcasecmp(value, str) == 0;
 }
+
+bool imap_str_is_atom(const char *str)
+{
+       if (*str == '\0')
+               return FALSE;
+       for (; *str != '\0'; str++) {
+               if (!IS_ATOM_CHAR(*str))
+                       return FALSE;
+       }
+       return TRUE;
+}

diff --git a/src/lib-imap/imap-arg.h b/src/lib-imap/imap-arg.h
index d55ee154f0c4fe5e739dd51ea60b4213585fca2e..1207c903aba318beb9fa3b418e591848c713ca5d 100644 (file)
--- a/src/lib-imap/imap-arg.h
+++ b/src/lib-imap/imap-arg.h
@@ -105,4 +105,7 @@ const struct imap_arg *imap_arg_as_list(const struct imap_arg *arg);
 /* Returns TRUE if arg is atom and case-insensitively matches str */
 bool imap_arg_atom_equals(const struct imap_arg *arg, const char *str);
 
+/* Returns TRUE if str contains only valid IMAP ATOM characters (non-empty) */
+bool imap_str_is_atom(const char *str);
+
 #endif