Merged branch stdio_rewrite back into trunk.

[pdclib.old] / functions / _PDCLIB / print.c

diff --git a/functions/_PDCLIB/print.c b/functions/_PDCLIB/print.c
index ddb6b99fc979d30a7847c8499b7c2fa25e8bdb9a..c36b00978ec7d7fd627087f117538472aaa4571c 100644 (file)
--- a/functions/_PDCLIB/print.c
+++ b/functions/_PDCLIB/print.c
@@ -15,6 +15,7 @@
 /* Using an integer's bits as flags for both the conversion flags and length
    modifiers.
 */
+/* FIXME: one too many flags to work on a 16-bit machine */
 #define E_minus    1<<0
 #define E_plus     1<<1
 #define E_alt      1<<2
@@ -39,8 +40,18 @@
    i - pointer to number of characters already delivered in this call
    n - pointer to maximum number of characters to be delivered in this call
    s - the buffer into which the character shall be delivered
+   FIXME: ref. fputs() for a better way to buffer handling
 */
-#define DELIVER( x ) do { if ( status->i < status->n ) { if ( status->stream != NULL ) { status->stream->buffer[status->stream->bufidx++] = x; if ( ( status->stream->bufidx == status->stream->bufsize ) || ( ( status->stream->status & _IOLBF ) && ( x == '\n' ) ) || ( status->stream->status & _IONBF ) ) fflush( status->stream ); } else status->s[status->i] = x; } ++(status->i); } while ( 0 )
+#define DELIVER( x ) \
+do { \
+    if ( status->i < status->n ) { \
+        if ( status->stream != NULL ) \
+            putc( x, status->stream ); \
+        else \
+            status->s[status->i] = x; \
+    } \
+    ++(status->i); \
+} while ( 0 )
 
 /* This function recursively converts a given integer value to a character
    stream. The conversion is done under the control of a given status struct
@@ -113,7 +124,7 @@ static void int2base( intmax_t value, struct _PDCLIB_status_t * status )
             size_t characters = preidx + ( ( status->this > status->prec ) ? status->this : status->prec );
             if ( status->width > characters )
             {
-                for ( int i = 0; i < status->width - characters; ++i )
+                for ( size_t i = 0; i < status->width - characters; ++i )
                 {
                     DELIVER( ' ' );
                     /*
@@ -159,7 +170,7 @@ static void int2base( intmax_t value, struct _PDCLIB_status_t * status )
             }
         }
         /* Do the precision padding if necessary. */
-        for ( int i = 0; i < prec_pads; ++i )
+        for ( size_t i = 0; i < prec_pads; ++i )
         {
             DELIVER( '0' );
         }
@@ -242,12 +253,26 @@ const char * _PDCLIB_print( const char * spec, struct _PDCLIB_status_t * status
     if ( *spec == '*' )
     {
         /* Retrieve width value from argument stack */
+#if 1
+        int width = va_arg( status->arg, int );
+        if ( width < 0 )
+        {
+            status->flags |= E_minus;
+            status->width = width * -1; /* FIXME: Should be abs( width ) */
+        }
+        else
+        {
+            status->width = width;
+        }
+#else
+        /* FIXME: Old version - with unsigned status->width, condition <0 is never true */
         if ( ( status->width = va_arg( status->arg, int ) ) < 0 )
         {
             /* Negative value is '-' flag plus absolute value */
             status->flags |= E_minus;
             status->width *= -1;
         }
+#endif
         ++spec;
     }
     else
@@ -504,9 +529,18 @@ const char * _PDCLIB_print( const char * spec, struct _PDCLIB_status_t * status
 static int testprintf( char * buffer, size_t n, const char * format, ... )
 {
     /* Members: base, flags, n, i, this, s, width, prec, stream, arg         */
-    struct _PDCLIB_status_t status = { 0, 0, n, 0, 0, buffer, 0, 0, NULL, NULL };
-    memset( buffer, '\0', 100 );
+    struct _PDCLIB_status_t status;
+    status.base = 0;
+    status.flags = 0;
+    status.n = n;
+    status.i = 0;
+    status.this = 0;
+    status.s = buffer;
+    status.width = 0;
+    status.prec = 0;
+    status.stream = NULL;
     va_start( status.arg, format );
+    memset( buffer, '\0', 100 );
     if ( *(_PDCLIB_print( format, &status )) != '\0' )
     {
         printf( "_PDCLIB_print() did not return end-of-specifier on '%s'.\n", format );