From b7c15c31519dc44c1f691e0466badd556ffe9423 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 18:18:56 +0200
Subject: Adding upstream version 3.7.10.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/util/vstring.h | 125 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 src/util/vstring.h

(limited to 'src/util/vstring.h')

diff --git a/src/util/vstring.h b/src/util/vstring.h
new file mode 100644
index 0000000..49fd960
--- /dev/null
+++ b/src/util/vstring.h
@@ -0,0 +1,125 @@
+#ifndef _VSTRING_H_INCLUDED_
+#define _VSTRING_H_INCLUDED_
+
+/*++
+/* NAME
+/*	vstring 3h
+/* SUMMARY
+/*	arbitrary-length string manager
+/* SYNOPSIS
+/*	#include "vstring.h"
+/* DESCRIPTION
+/* .nf
+
+ /*
+  * System library.
+  */
+#include <stdarg.h>
+
+ /*
+  * Utility library.
+  */
+#include <vbuf.h>
+#include <check_arg.h>
+
+ /*
+  * We can't allow bare VBUFs in the interface, because VSTRINGs have a
+  * specific initialization and destruction sequence.
+  */
+typedef struct VSTRING {
+    VBUF    vbuf;
+} VSTRING;
+
+extern VSTRING *vstring_alloc(ssize_t);
+extern void vstring_ctl(VSTRING *,...);
+extern VSTRING *vstring_truncate(VSTRING *, ssize_t);
+extern VSTRING *vstring_set_payload_size(VSTRING *, ssize_t);
+extern VSTRING *vstring_free(VSTRING *);
+extern VSTRING *vstring_strcpy(VSTRING *, const char *);
+extern VSTRING *vstring_strncpy(VSTRING *, const char *, ssize_t);
+extern VSTRING *vstring_strcat(VSTRING *, const char *);
+extern VSTRING *vstring_strncat(VSTRING *, const char *, ssize_t);
+extern VSTRING *vstring_memcpy(VSTRING *, const char *, ssize_t);
+extern VSTRING *vstring_memcat(VSTRING *, const char *, ssize_t);
+extern char *vstring_memchr(VSTRING *, int);
+extern VSTRING *vstring_insert(VSTRING *, ssize_t, const char *, ssize_t);
+extern VSTRING *vstring_prepend(VSTRING *, const char *, ssize_t);
+extern VSTRING *PRINTFLIKE(2, 3) vstring_sprintf(VSTRING *, const char *,...);
+extern VSTRING *PRINTFLIKE(2, 3) vstring_sprintf_append(VSTRING *, const char *,...);
+extern VSTRING *PRINTFLIKE(2, 3) vstring_sprintf_prepend(VSTRING *, const char *,...);
+extern char *vstring_export(VSTRING *);
+extern VSTRING *vstring_import(char *);
+
+/* Legacy API: constant plus type-unchecked argument. */
+#define VSTRING_CTL_EXACT	2
+#define VSTRING_CTL_END		0
+
+/* Safer API: type-checked arguments. */
+#define CA_VSTRING_CTL_END		VSTRING_CTL_END
+#define CA_VSTRING_CTL_EXACT		VSTRING_CTL_EXACT
+
+CHECK_VAL_HELPER_DCL(VSTRING_CTL, ssize_t);
+
+/* Flags 24..31 are reserved for VSTRING. */
+#define VSTRING_FLAG_EXACT	(1<<24)	/* exact allocation for tests */
+#define VSTRING_FLAG_MASK	(255 << 24)
+
+ /*
+  * Macros. Unsafe macros have UPPERCASE names.
+  */
+#define VSTRING_SPACE(vp, len)	((vp)->vbuf.space(&(vp)->vbuf, (len)))
+#define vstring_str(vp)		((char *) (vp)->vbuf.data)
+#define VSTRING_LEN(vp)		((ssize_t) ((vp)->vbuf.ptr - (vp)->vbuf.data))
+#define vstring_end(vp)		((char *) (vp)->vbuf.ptr)
+#define VSTRING_TERMINATE(vp)	do { \
+				    *(vp)->vbuf.ptr = 0; \
+				} while (0)
+#define VSTRING_RESET(vp)	do { \
+				    (vp)->vbuf.ptr = (vp)->vbuf.data; \
+				    (vp)->vbuf.cnt = (vp)->vbuf.len; \
+				} while (0)
+#define	VSTRING_ADDCH(vp, ch)	VBUF_PUT(&(vp)->vbuf, ch)
+#define VSTRING_SKIP(vp)	do { \
+				    while ((vp)->vbuf.cnt > 0 && *(vp)->vbuf.ptr) \
+				        (vp)->vbuf.ptr++, (vp)->vbuf.cnt--; \
+				} while (0)
+#define vstring_avail(vp)	((vp)->vbuf.cnt)
+
+ /*
+  * The following macro is not part of the public interface, because it can
+  * really screw up a buffer by positioning past allocated memory.
+  */
+#ifdef VSTRING_INTERNAL
+#define VSTRING_AT_OFFSET(vp, offset) do { \
+	(vp)->vbuf.ptr = (vp)->vbuf.data + (offset); \
+	(vp)->vbuf.cnt = (vp)->vbuf.len - (offset); \
+    } while (0)
+#endif
+
+extern VSTRING *vstring_vsprintf(VSTRING *, const char *, va_list);
+extern VSTRING *vstring_vsprintf_append(VSTRING *, const char *, va_list);
+
+/* BUGS
+/*	Auto-resizing may change the address of the string data in
+/*	a vstring structure. Beware of dangling pointers.
+/* HISTORY
+/* .ad
+/* .fi
+/*	A vstring module appears in the UNPROTO software by Wietse Venema.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+#endif
-- 
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