skip-ws, #2/6, introduce "ngspice/stringskip.h"

with some temporary macros to skip whitespace

src/frontend/com_let.c

@@ -4,6 +4,7 @@
 #include "ngspice/ngspice.h"
 #include "ngspice/fteext.h"
 #include "ngspice/cpextern.h"
+#include "ngspice/stringskip.h"
 
 #include "com_let.h"
 #include "com_display.h"

src/frontend/cpitf.c

@@ -8,6 +8,7 @@ Author: 1985 Wayne A. Christopher, U. C. Berkeley CAD Group
 #include "ngspice/ftedefs.h"
 #include "ngspice/dvec.h"
 #include "ngspice/fteparse.h"
+#include "ngspice/stringskip.h"
 #include "cpitf.h"
 #include "com_let.h"
 #include "com_set.h"

src/frontend/dimens.c

@@ -10,6 +10,7 @@ Author: 1992 David A. Gates, U. C. Berkeley CAD Group
 #include "ngspice/ngspice.h"
 #include "ngspice/dvec.h"               /* For MAXDIMS */
 #include "dimens.h"
+#include "ngspice/stringskip.h"
 
 
 /*

src/frontend/help/textdisp.c

@@ -15,6 +15,7 @@ Author: 1986 Wayne A. Christopher, U. C. Berkeley CAD Group
 #include "ngspice/cpdefs.h"
 #include "ngspice/hlpdefs.h"
 #include "ngspice/suffix.h"
+#include "ngspice/stringskip.h"
 
 static topic *curtop;
 static bool quitflag;

src/frontend/inp.c

@@ -39,6 +39,7 @@ Author: 1985 Wayne A. Christopher
 #endif
 
 #include "numparam/numpaif.h"
+#include "ngspice/stringskip.h"
 
 
 #define line_free(line, flag)                   \

src/frontend/newcoms.c

@@ -11,6 +11,7 @@ Copyright 1992 Regents of the University of California.  All rights reserved.
 #include "ngspice/ftedefs.h"
 #include "ngspice/fteparse.h"
 #include "ngspice/dvec.h"
+#include "ngspice/stringskip.h"
 
 #include "newcoms.h"
 #include "quote.h"

src/frontend/numparam/spicenum.c

@@ -27,6 +27,7 @@ Todo:
 #include "numparam.h"
 
 #include "ngspice/fteext.h"
+#include "ngspice/stringskip.h"
 
 #ifdef SHARED_MODULE
 extern ATTRIBUTE_NORETURN void shared_exit(int status);

src/frontend/nutinp.c

@@ -12,6 +12,7 @@ Author: 1985 Wayne A. Christopher
 #include "ngspice/ftedefs.h"
 #include "ngspice/dvec.h"
 #include "ngspice/fteinp.h"
+#include "ngspice/stringskip.h"
 #include "nutinp.h"
 #include "variable.h"
 #include "../misc/mktemp.h"

src/frontend/plotting/graf.c

@@ -29,6 +29,7 @@ Author: 1988 Jeffrey M. Hsu
 #include "../breakp2.h"
 #include "../display.h"
 #include "../runcoms.h"
+#include "ngspice/stringskip.h"
 
 
 static void gr_start_internal(struct dvec *dv, bool copyvec);

src/frontend/subckt.c

@@ -59,6 +59,7 @@ Modified: 2000 AlansFixes
 #include "ngspice/cpdefs.h"
 #include "ngspice/ftedefs.h"
 #include "ngspice/fteinp.h"
+#include "ngspice/stringskip.h"
 
 #include <stdarg.h>
 

src/frontend/vectors.c

@@ -12,6 +12,7 @@ Author: 1985 Wayne A. Christopher, U. C. Berkeley CAD Group
 #include "ngspice/ftedefs.h"
 #include "ngspice/dvec.h"
 #include "ngspice/sim.h"
+#include "ngspice/stringskip.h"
 
 #include "circuits.h"
 #include "completion.h"

src/include/ngspice/stringskip.h

@@ -0,0 +1,8 @@
+#ifndef ngspice_STRINGSKIP_H
+#define ngspice_STRINGSKIP_H
+
+#define TEMPORARY_SKIP_NON_WS_X0(s)  do { while (*(s) && !isspace_c(*(s))) (s)++; } while(0)
+#define TEMPORARY_SKIP_WS_X0(s)      do { while (*(s) &&  isspace_c(*(s))) (s)++; } while(0)
+#define TEMPORARY_SKIP_WS_X1(s)      do { while (         isspace_c(*(s))) (s)++; } while(0)
+
+#endif

src/misc/string.c

@@ -8,6 +8,7 @@ Copyright 1990 Regents of the University of California.  All rights reserved.
 
 #include "ngspice/ngspice.h"
 #include "ngspice/stringutil.h"
+#include "ngspice/stringskip.h"
 #include "ngspice/dstring.h"
 
 #include <stdarg.h>

src/misc/tilde.c

@@ -5,6 +5,7 @@ Modified: 2002 R. Oktas, <roktas@omu.edu.tr>
 
 #include "ngspice/ngspice.h"
 #include "tilde.h"
+#include "ngspice/stringskip.h"
 
 #ifdef HAVE_PWD_H
 #include <pwd.h>

src/spicelib/parser/inp2r.c

@@ -13,6 +13,7 @@ Remarks:  This code is based on a version written by Serban Popescu which
 #include "ngspice/inpmacs.h"
 #include "ngspice/fteext.h"
 #include "inpxx.h"
+#include "ngspice/stringskip.h"
 
 /* undefine to add tracing to this file */
 /* #define TRACE */