ING_DB

WEGA/contrib/ingres/dbs/src/parser/s_inout.c

@@ -0,0 +1,56 @@
+# include	"gen.h"
+# include	"../h/dbs.h"
+# include	"../h/scanner.h"
+
+/* TWO CHARACTER STACK FOR 'UNGETC' BACKUP */
+char	Pchar[2];
+int	Pctr;
+
+/*
+** GTCHAR
+** If 'Lcase' is set, all upper-case alphabetics are
+** mapped into lower-case.
+** The correct return is > 0; a return = 0 indicates end-of-file.
+*/
+gtchar()
+{
+	extern int	yyline;
+	register int	chr;
+
+	/* USE STACKED CHARACTERS IF POSSIBLE */
+	if (Pctr)
+		chr = Pchar[--Pctr];
+	else
+		chr = getscr(0);
+
+	/* UPDATE LINE COUNTER */
+	if (chr == '\n')
+		yyline++;
+
+	if (Lcase && ((chr >= 'A'
+# ifdef EBCDIC
+	   && chr <= 'I') || (chr >= 'J'
+	   && chr <= 'R') || (chr >= 'S'
+# endif
+	   && chr <= 'Z')))
+		chr += 'a' - 'A';
+
+	return (chr);
+}
+
+
+/*
+** BACKUP
+** saves the character argument in the global stack 'Pchar'
+**/
+backup(chr)
+char	chr;
+{
+	extern int	yyline;
+
+	if (Pctr == 2)
+		AAsyserr(20002, yyline, Pchar[0], Pchar[1], chr);
+	Pchar[Pctr++] = chr;
+	if (chr == '\n')
+		yyline--;
+}