1 files changed, 111 insertions, 0 deletions
diff --git a/bin/sh/syntax.c b/bin/sh/syntax.c
new file mode 100644
index 0000000..7b460d4
--- /dev/null
+++ b/bin/sh/syntax.c
@@ -0,0 +1,111 @@
+/*	$NetBSD: syntax.c,v 1.7 2018/12/03 06:40:26 kre Exp $	*/
+
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: syntax.c,v 1.7 2018/12/03 06:40:26 kre Exp $");
+
+#include <limits.h>
+#include "shell.h"
+#include "syntax.h"
+#include "parser.h"
+
+#if CWORD != 0
+#error initialisation assumes 'CWORD' is zero
+#endif
+
+#define ndx(ch) (ch + 2 - CHAR_MIN)
+#define set(ch, val) [ndx(ch)] = val,
+#define set_range(s, e, val) [ndx(s) ... ndx(e)] = val,
+
+/* syntax table used when not in quotes */
+const char basesyntax[258] = { CFAKE, CEOF,
+    set_range(CTL_FIRST, CTL_LAST, CCTL)
+    set('\n', CNL)
+    set('\\', CBACK)
+    set('\'', CSQUOTE)
+    set('"', CDQUOTE)
+    set('`', CBQUOTE)
+    set('$', CVAR)
+    set('}', CENDVAR)
+    set('<', CSPCL)
+    set('>', CSPCL)
+    set('(', CSPCL)
+    set(')', CSPCL)
+    set(';', CSPCL)
+    set('&', CSPCL)
+    set('|', CSPCL)
+    set(' ', CSPCL)
+    set('\t', CSPCL)
+};
+
+/* syntax table used when in double quotes */
+const char dqsyntax[258] = { CFAKE, CEOF,
+    set_range(CTL_FIRST, CTL_LAST, CCTL)
+    set('\n', CNL)
+    set('\\', CBACK)
+    set('"', CDQUOTE)
+    set('`', CBQUOTE)
+    set('$', CVAR)
+    set('}', CENDVAR)
+    /* ':/' for tilde expansion, '-]' for [a\-x] pattern ranges */
+    set('!', CCTL)
+    set('*', CCTL)
+    set('?', CCTL)
+    set('[', CCTL)
+    set('=', CCTL)
+    set('~', CCTL)
+    set(':', CCTL)
+    set('/', CCTL)
+    set('-', CCTL)
+    set(']', CCTL)
+};
+
+/* syntax table used when in single quotes */
+const char sqsyntax[258] = { CFAKE, CEOF,
+    set_range(CTL_FIRST, CTL_LAST, CCTL)
+    set('\n', CNL)
+    set('\'', CSQUOTE)
+    set('\\', CSBACK)
+    /* ':/' for tilde expansion, '-]' for [a\-x] pattern ranges */
+    set('!', CCTL)
+    set('*', CCTL)
+    set('?', CCTL)
+    set('[', CCTL)
+    set('=', CCTL)
+    set('~', CCTL)
+    set(':', CCTL)
+    set('/', CCTL)
+    set('-', CCTL)
+    set(']', CCTL)
+};
+
+/* syntax table used when in arithmetic */
+const char arisyntax[258] = { CFAKE, CEOF,
+    set_range(CTL_FIRST, CTL_LAST, CCTL)
+    set('\n', CNL)
+    set('\\', CBACK)
+    set('`', CBQUOTE)
+    set('\'', CSQUOTE)
+    set('"', CDQUOTE)
+    set('$', CVAR)
+    set('}', CENDVAR)
+    set('(', CLP)
+    set(')', CRP)
+};
+
+/* character classification table */
+const char is_type[258] = { 0, 0,
+    set_range('0', '9', ISDIGIT)
+    set_range('a', 'z', ISLOWER)
+    set_range('A', 'Z', ISUPPER)
+    set('_', ISUNDER)
+    set('#', ISSPECL)
+    set('?', ISSPECL)
+    set('$', ISSPECL)
+    set('!', ISSPECL)
+    set('-', ISSPECL)
+    set('*', ISSPECL)
+    set('@', ISSPECL)
+    set(' ', ISSPACE)
+    set('\t', ISSPACE)
+    set('\n', ISSPACE)
+};