X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=functions%2Fstdio%2Fvsscanf.c;h=be9bf61ae16ba5c699e718fc2d5285fa708c17b8;hb=92627d87c246591c540d0ae38296aa43e4c09b3c;hp=75f334d11b403b45935d81361c8baf0aa434ca00;hpb=dd3dfcc3689617d8547d2c2ef5f87fc8c951763a;p=fw%2Fpdclib

diff --git a/functions/stdio/vsscanf.c b/functions/stdio/vsscanf.c
index 75f334d..be9bf61 100644
--- a/functions/stdio/vsscanf.c
+++ b/functions/stdio/vsscanf.c
@@ -10,11 +10,77 @@
 #include <stdarg.h>
 
 #ifndef REGTEST
+#include <ctype.h>
 
 int vsscanf( const char * _PDCLIB_restrict s, const char * _PDCLIB_restrict format, va_list arg )
 {
-    /* TODO: Implement. */
-    return 0;
+    /* TODO: This function should interpret format as multibyte characters.  */
+    struct _PDCLIB_status_t status;
+    status.base = 0;
+    status.flags = 0;
+    status.n = 0;
+    status.i = 0;
+    status.current = 0;
+    status.s = (char *) s;
+    status.width = 0;
+    status.prec = 0;
+    status.stream = NULL;
+    va_copy( status.arg, arg );
+
+    while ( *format != '\0' )
+    {
+        const char * rc;
+        if ( ( *format != '%' ) || ( ( rc = _PDCLIB_scan( format, &status ) ) == format ) )
+        {
+            /* No conversion specifier, match verbatim */
+            if ( isspace( *format ) )
+            {
+                /* Whitespace char in format string: Skip all whitespaces */
+                /* No whitespaces in input do not result in matching error */
+                while ( isspace( *status.s ) )
+                {
+                    ++status.s;
+                    ++status.i;
+                }
+            }
+            else
+            {
+                /* Non-whitespace char in format string: Match verbatim */
+                if ( *status.s != *format )
+                {
+                    if ( *status.s == '\0' && status.n == 0 )
+                    {
+                        /* Early input error */
+                        return EOF;
+                    }
+                    /* Matching error */
+                    return status.n;
+                }
+                else
+                {
+                    ++status.s;
+                    ++status.i;
+                }
+            }
+            ++format;
+        }
+        else
+        {
+            /* NULL return code indicates error */
+            if ( rc == NULL )
+            {
+                if ( ( *status.s == '\n' ) && ( status.n == 0 ) )
+                {
+                    status.n = EOF;
+                }
+                break;
+            }
+            /* Continue parsing after conversion specifier */
+            format = rc;
+        }
+    }
+    va_end( status.arg );
+    return status.n;
 }
 
 #endif
@@ -22,9 +88,21 @@ int vsscanf( const char * _PDCLIB_restrict s, const char * _PDCLIB_restrict form
 #ifdef TEST
 #include <_PDCLIB_test.h>
 
+#include "scan_test.h"
+
+static int SCANFUNC( char const * stream, char const * format, ... )
+{
+    va_list ap;
+    va_start( ap, format );
+    int result = vsscanf( stream, format, ap );
+    va_end( ap );
+    return result;
+}
+
 int main( void )
 {
-    TESTCASE( NO_TESTDRIVER );
+#include "sscan_sources.incl"
+#include "scanf_testcases.incl"
     return TEST_RESULTS;
 }