1 files changed, 151 insertions, 0 deletions
diff --git a/bin/sh/var.h b/bin/sh/var.h
new file mode 100644
index 0000000..43bef4b
--- /dev/null
+++ b/bin/sh/var.h
@@ -0,0 +1,151 @@
+/*	$NetBSD: var.h,v 1.38 2018/12/04 14:03:30 kre Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * 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. 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.
+ *
+ *	@(#)var.h	8.2 (Berkeley) 5/4/95
+ */
+
+#ifndef	VUNSET		/* double include protection */
+/*
+ * Shell variables.
+ */
+
+/* flags */
+#define VUNSET		0x0001	/* the variable is not set */
+#define VEXPORT		0x0002	/* variable is exported */
+#define VREADONLY	0x0004	/* variable cannot be modified */
+#define VNOEXPORT	0x0008	/* variable may not be exported */
+
+#define VSTRFIXED	0x0010	/* variable struct is statically allocated */
+#define VTEXTFIXED	0x0020	/* text is statically allocated */
+#define VSTACK		0x0040	/* text is allocated on the stack */
+#define VNOFUNC		0x0100	/* don't call the callback function */
+#define VFUNCREF	0x0200	/* the function is called on ref, not set */
+
+#define VSPECIAL	0x1000	/* magic properties not lost when set */
+#define VDOEXPORT	0x2000	/* obey VEXPORT even if VNOEXPORT */
+#define VNOSET		0x4000	/* do not set variable - just readonly test */
+#define VNOERROR	0x8000	/* be quiet if set fails (no error msg) */
+
+struct var;
+
+union var_func_union {		/* function to be called when:  */
+	void (*set_func)(const char *);		/* variable gets set/unset */
+	char*(*ref_func)(struct var *);		/* variable is referenced */
+};
+
+struct var {
+	struct var *next;		/* next entry in hash list */
+	int flags;			/* flags are defined above */
+	char *text;			/* name=value */
+	int name_len;			/* length of name */
+	union var_func_union v_u;	/* function to apply (sometimes) */
+};
+
+
+struct localvar {
+	struct localvar *next;		/* next local variable in list */
+	struct var *vp;			/* the variable that was made local */
+	int flags;			/* saved flags */
+	char *text;			/* saved text */
+	union var_func_union v_u;	/* saved function */
+};
+
+
+extern struct localvar *localvars;
+
+extern struct var vifs;
+extern char ifs_default[];
+extern struct var vmail;
+extern struct var vmpath;
+extern struct var vpath;
+extern struct var vps1;
+extern struct var vps2;
+extern struct var vps4;
+extern struct var line_num;
+#ifndef SMALL
+extern struct var editrc;
+extern struct var vterm;
+extern struct var vtermcap;
+extern struct var vhistsize;
+extern struct var ps_lit;
+extern struct var euname;
+extern struct var random_num;
+extern intmax_t sh_start_time;
+#endif
+
+extern int line_number;
+extern int funclinebase;
+extern int funclineabs;
+
+/*
+ * The following macros access the values of the above variables.
+ * They have to skip over the name.  They return the null string
+ * for unset variables.
+ */
+
+#define ifsset()	((vifs.flags & VUNSET) == 0)
+#define ifsval()	(ifsset() ? (vifs.text + 4) : ifs_default)
+#define mailval()	(vmail.text + 5)
+#define mpathval()	(vmpath.text + 9)
+#define pathval()	(vpath.text + 5)
+#define ps1val()	(vps1.text + 4)
+#define ps2val()	(vps2.text + 4)
+#define ps4val()	(vps4.text + 4)
+#define optindval()	(voptind.text + 7)
+#ifndef SMALL
+#define histsizeval()	(vhistsize.text + 9)
+#define termval()	(vterm.text + 5)
+#endif
+
+#define mpathset()	((vmpath.flags & VUNSET) == 0)
+
+void initvar(void);
+void setvar(const char *, const char *, int);
+void setvareq(char *, int);
+struct strlist;
+void listsetvar(struct strlist *, int);
+char *lookupvar(const char *);
+char *bltinlookup(const char *, int);
+char **environment(void);
+void shprocvar(void);
+int showvars(const char *, int, int, const char *);
+void mklocal(const char *, int);
+void listmklocal(struct strlist *, int);
+void poplocalvars(void);
+int unsetvar(const char *, int);
+void choose_ps1(void);
+int setvarsafe(const char *, const char *, int);
+void print_quoted(const char *);
+int validname(const char *, int, int *);
+
+#endif