Adding upstream version 2.0.13.upstream/2.0.13upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 173 insertions, 0 deletions

diff --git a/usr/dash/var.h b/usr/dash/var.h
new file mode 100644
index 0000000..1a06a3c
--- /dev/null
+++ b/usr/dash/var.h
@@ -0,0 +1,173 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 1997-2005
+ *	Herbert Xu <herbert@gondor.apana.org.au>.  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
+ */
+
+#include <inttypes.h>
+
+/*
+ * Shell variables.
+ */
+
+/* flags */
+#define VEXPORT		0x01	/* variable is exported */
+#define VREADONLY	0x02	/* variable cannot be modified */
+#define VSTRFIXED	0x04	/* variable struct is statically allocated */
+#define VTEXTFIXED	0x08	/* text is statically allocated */
+#define VSTACK		0x10	/* text is allocated on the stack */
+#define VUNSET		0x20	/* the variable is not set */
+#define VNOFUNC		0x40	/* don't call the callback function */
+#define VNOSET		0x80	/* do not set variable - just readonly test */
+#define VNOSAVE		0x100	/* when text is on the heap before setvareq */
+
+
+struct var {
+	struct var *next;		/* next entry in hash list */
+	int flags;			/* flags are defined above */
+	const char *text;		/* name=value */
+	void (*func)(const char *);
+					/* function to be called when  */
+					/* the variable gets set/unset */
+};
+
+
+struct localvar {
+	struct localvar *next;		/* next local variable in list */
+	struct var *vp;			/* the variable that was made local */
+	int flags;			/* saved flags */
+	const char *text;		/* saved text */
+};
+
+struct localvar_list;
+
+
+extern struct localvar *localvars;
+extern struct var varinit[];
+
+#if ATTY
+#define vatty varinit[0]
+#define vifs varinit[1]
+#else
+#define vifs varinit[0]
+#endif
+#define vmail (&vifs)[1]
+#define vmpath (&vmail)[1]
+#define vpath (&vmpath)[1]
+#define vps1 (&vpath)[1]
+#define vps2 (&vps1)[1]
+#define vps4 (&vps2)[1]
+#define voptind (&vps4)[1]
+#ifdef WITH_LINENO
+#define vlineno (&voptind)[1]
+#endif
+#ifndef SMALL
+#ifdef WITH_LINENO
+#define vterm (&vlineno)[1]
+#else
+#define vterm (&voptind)[1]
+#endif
+#define vhistsize (&vterm)[1]
+#endif
+
+#ifdef IFS_BROKEN
+extern const char defifsvar[];
+#define defifs (defifsvar + 4)
+#else
+extern const char defifs[];
+#endif
+extern const char defpathvar[];
+#define defpath (defpathvar + 5)
+
+extern int lineno;
+extern char linenovar[];
+
+/*
+ * 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 ifsval()	(vifs.text + 4)
+#define ifsset()	((vifs.flags & VUNSET) == 0)
+#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)
+#define linenoval()	(vlineno.text + 7)
+#ifndef SMALL
+#define histsizeval()	(vhistsize.text + 9)
+#define termval()	(vterm.text + 5)
+#endif
+
+#if ATTY
+#define attyset()	((vatty.flags & VUNSET) == 0)
+#endif
+#define mpathset()	((vmpath.flags & VUNSET) == 0)
+
+void initvar(void);
+struct var *setvar(const char *name, const char *val, int flags);
+intmax_t setvarint(const char *, intmax_t, int);
+struct var *setvareq(char *s, int flags);
+struct strlist;
+void listsetvar(struct strlist *, int);
+char *lookupvar(const char *);
+intmax_t lookupvarint(const char *);
+char **listvars(int, int, char ***);
+#define environment() listvars(VEXPORT, VUNSET, 0)
+int showvars(const char *, int, int);
+int exportcmd(int, char **);
+int localcmd(int, char **);
+void mklocal(char *);
+struct localvar_list *pushlocalvars(void);
+void poplocalvars(int);
+void unwindlocalvars(struct localvar_list *stop);
+int unsetcmd(int, char **);
+void unsetvar(const char *);
+int varcmp(const char *, const char *);
+
+static inline int varequal(const char *a, const char *b) {
+	return !varcmp(a, b);
+}
+
+/*
+ * Search the environment of a builtin command.
+ */
+
+static inline char *bltinlookup(const char *name)
+{
+	return lookupvar(name);
+}