Getting closer to scan().

[pdclib] / internals / _PDCLIB_int.h

diff --git a/internals/_PDCLIB_int.h b/internals/_PDCLIB_int.h
index 02e122eb3ada87dfa4f09e2a21712370a72bcadb..9019f72b4993b6d83db7f0f14a062148c8bca559 100644 (file)
--- a/internals/_PDCLIB_int.h
+++ b/internals/_PDCLIB_int.h
@@ -317,10 +317,12 @@ struct _PDCLIB_status_t
 {
     int              base;  /* base to which the value shall be converted    */
     _PDCLIB_int_fast32_t flags; /* flags and length modifiers                */
-    _PDCLIB_size_t   n;     /* maximum number of characters to be written    */
+    _PDCLIB_size_t   n;     /* print: maximum characters to be written       */
+                            /* scan:  number matched conversion specifiers   */
     _PDCLIB_size_t   i;     /* number of characters already written          */
     _PDCLIB_size_t   this;  /* output chars in the current conversion        */
-    char *           s;     /* target buffer                                 */
+    char *           s;     /* print: target buffer                          */
+                            /* scan:  source string                          */
     _PDCLIB_size_t   width; /* width of current field                        */
     _PDCLIB_size_t   prec;  /* precision of current field                    */
     struct _PDCLIB_file_t * stream;/* for to-stream output                   */
@@ -345,12 +347,21 @@ extern char _PDCLIB_Xdigits[];
 /* The worker for all printf() type of functions. The pointer spec should point
    to the introducing '%' of a conversion specifier. The status structure is to
    be that of the current printf() function, of which the members n, s, stream
-   and arg will be preserved, i will be updated, and all others will be trashed
+   and arg will be preserved; i will be updated; and all others will be trashed
    by the function.
    Returns a pointer to the first character not parsed as conversion specifier.
 */
 const char * _PDCLIB_print( const char * spec, struct _PDCLIB_status_t * status );
 
+/* The worker for all scanf() type of functions. The pointer spec should point
+   to the introducing '%' of a conversion specifier. The status structure is to
+   be that of the current scanf() function, of which the member stream will be
+   preserved, n, i, and s will be updated; and all others will be trashed by the
+   function.
+   Returns a pointer to the first character not parsed as conversion specifier.
+*/
+const char * _PDCLIB_scan( const char * spec, struct _PDCLIB_status_t * status );
+
 /* Parsing any fopen() style filemode string into a number of flags. */
 unsigned int _PDCLIB_filemode( const char * mode );