BSD 4.4 Lite Usr.bin Sources

1 files changed, 231 insertions, 0 deletions

diff --git a/usr.bin/window/parser2.c b/usr.bin/window/parser2.c
new file mode 100644
index 000000000000..e9b2f550aac6
--- /dev/null
+++ b/usr.bin/window/parser2.c
@@ -0,0 +1,231 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Edward Wang at The University of California, Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)parser2.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include "parser.h"
+#include "var.h"
+#include "lcmd.h"
+#include "alias.h"
+
+/*
+ * name == 0 means we don't have a function name but
+ * want to parse the arguments anyway.  flag == 0 in this case.
+ */
+p_function(name, v, flag)
+char *name;
+register struct value *v;
+{
+	struct value t;
+	register struct lcmd_tab *c = 0;
+	register struct alias *a = 0;
+	register struct lcmd_arg *ap;		/* this arg */
+	struct lcmd_arg *lp = 0;		/* list arg */
+	register i;
+	struct value av[LCMD_NARG + 1];
+	register struct value *vp;
+
+	if (name != 0)
+		if (c = lcmd_lookup(name))
+			name = c->lc_name;
+		else if (a = alias_lookup(name))
+			name = a->a_name;
+		else {
+			p_error("%s: No such command or alias.", name);
+			flag = 0;
+		}
+
+	for (vp = av; vp < &av[LCMD_NARG + 1]; vp++)
+		vp->v_type = V_ERR;
+
+	if (token == T_LP)
+		(void) s_gettok();
+	i = 0;
+	for (;;) {
+		ap = 0;
+		vp = 0;
+		if (token == T_COMMA)		/* null argument */
+			t.v_type = V_ERR;
+		else {
+			if (p_expr0(&t, flag) < 0)
+				break;
+			if (t.v_type == V_ERR)
+				flag = 0;
+		}
+		if (token != T_ASSIGN) {
+			if (i >= LCMD_NARG ||
+			    c != 0 && (ap = lp) == 0 &&
+			    (ap = c->lc_arg + i)->arg_name == 0) {
+				p_error("%s: Too many arguments.", name);
+				flag = 0;
+			} else
+				vp = &av[i++];
+		} else {
+			char *tmp;
+			if (p_convstr(&t) < 0)
+				goto abort;
+			tmp = t.v_type == V_STR ? t.v_str : 0;
+			(void) s_gettok();
+			if (p_expr(&t, flag) < 0) {
+				if (tmp)
+					str_free(tmp);
+				p_synerror();
+				goto abort;
+			}
+			if (t.v_type == V_ERR)
+				flag = 0;
+			if (tmp) {
+				if (c == 0) {
+					/* an aliase */
+					p_error("%s: Bad alias syntax.", name);
+					flag = 0;
+				} else {
+					for (ap = c->lc_arg, vp = av;
+					     ap != 0 && ap->arg_name != 0 &&
+					     (*ap->arg_name == '\0' ||
+					      !str_match(tmp, ap->arg_name,
+							ap->arg_minlen));
+					     ap++, vp++)
+						;
+					if (ap == 0 || ap->arg_name == 0) {
+						p_error("%s: Unknown argument \"%s\".",
+							name, tmp);
+						flag = 0;
+						ap = 0;
+						vp = 0;
+					}
+				}
+				str_free(tmp);
+			}
+		}
+		if (ap != 0) {
+			if (ap->arg_flags & ARG_LIST) {
+				i = vp - av + 1;
+				lp = ap;
+			}
+			if (vp->v_type != V_ERR) {
+				if (*ap->arg_name)
+					p_error("%s: Argument %d (%s) duplicated.",
+						name, vp - av + 1,
+						ap->arg_name);
+				else
+					p_error("%s: Argument %d duplicated.",
+						name, vp - av + 1);
+				flag = 0;
+				vp = 0;
+			} else if (t.v_type == V_ERR) {
+				/* do nothing */
+			} else if ((ap->arg_flags&ARG_TYPE) == ARG_NUM &&
+				   t.v_type != V_NUM ||
+				   (ap->arg_flags&ARG_TYPE) == ARG_STR &&
+				   t.v_type != V_STR) {
+				if (*ap->arg_name)
+					p_error("%s: Argument %d (%s) type mismatch.",
+						name, vp - av + 1,
+						ap->arg_name);
+				else
+					p_error("%s: Argument %d type mismatch.",
+						name, vp - av + 1);
+				flag = 0;
+				vp = 0;
+			}
+		}
+		if (vp != 0)
+			*vp = t;
+		else
+			val_free(t);
+		if (token == T_COMMA)
+			(void) s_gettok();
+	}
+
+	if (p_erred())
+		flag = 0;
+	if (token == T_RP)
+		(void) s_gettok();
+	else if (token != T_EOL && token != T_EOF)
+		flag = 0;		/* look for legal follow set */
+	v->v_type = V_ERR;
+	if (flag)
+		if (c != 0)
+			(*c->lc_func)(v, av);
+		else
+			if (a->a_flags & A_INUSE)
+				p_error("%s: Recursive alias.", a->a_name);
+			else {
+				a->a_flags |= A_INUSE;
+				if (dolongcmd(a->a_buf, av, i) < 0)
+					p_memerror();
+				a->a_flags &= ~A_INUSE;
+			}
+	if (p_abort()) {
+		val_free(*v);
+		v->v_type = V_ERR;
+		goto abort;
+	}
+	for (vp = av; vp < &av[LCMD_NARG]; vp++)
+		val_free(*vp);
+	return 0;
+abort:
+	for (vp = av; vp < &av[LCMD_NARG]; vp++)
+		val_free(*vp);
+	return -1;
+}
+
+p_assign(name, v, flag)
+char *name;
+struct value *v;
+char flag;
+{
+	(void) s_gettok();
+
+	if (p_expr(v, flag) < 0) {
+		p_synerror();
+		return -1;
+	}
+	switch (v->v_type) {
+	case V_STR:
+	case V_NUM:
+		if (flag && var_set(name, v) == 0) {
+			p_memerror();
+			val_free(*v);
+			return -1;
+		}
+		break;
+	}
+	return 0;
+}