Adding upstream version 3.4.23.upstream/3.4.23upstream

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

1 files changed, 267 insertions, 0 deletions

diff --git a/src/util/vstring_vstream.c b/src/util/vstring_vstream.c
new file mode 100644
index 0000000..451cc50
--- /dev/null
+++ b/src/util/vstring_vstream.c
@@ -0,0 +1,267 @@
+/*++
+/* NAME
+/*	vstring_vstream 3
+/* SUMMARY
+/*	auto-resizing string library, standard I/O interface
+/* SYNOPSIS
+/*	#include <vstring_vstream.h>
+/*
+/*	int	vstring_get_flags(vp, fp, flags)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*	int	flags
+/*
+/*	int	vstring_get_flags_nonl(vp, fp, flags)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*	int	flags
+/*
+/*	int	vstring_get_flags_null(vp, fp, flags)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*	int	flags
+/*
+/*	int	vstring_get_flags_bound(vp, fp, flags, bound)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*	ssize_t	bound;
+/*	int	flags
+/*
+/*	int	vstring_get_flags_nonl_bound(vp, fp, flags, bound)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*	ssize_t	bound;
+/*	int	flags
+/*
+/*	int	vstring_get_flags_null_bound(vp, fp, flags, bound)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*	ssize_t	bound;
+/*	int	flags
+/* CONVENIENCE API
+/*	int	vstring_get(vp, fp)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*
+/*	int	vstring_get_nonl(vp, fp)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*
+/*	int	vstring_get_null(vp, fp)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*
+/*	int	vstring_get_bound(vp, fp, bound)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*	ssize_t	bound;
+/*
+/*	int	vstring_get_nonl_bound(vp, fp, bound)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*	ssize_t	bound;
+/*
+/*	int	vstring_get_null_bound(vp, fp, bound)
+/*	VSTRING	*vp;
+/*	VSTREAM	*fp;
+/*	ssize_t	bound;
+/* DESCRIPTION
+/*	The routines in this module each read one newline or null-terminated
+/*	string from an input stream. In all cases the result is either the
+/*	last character read, typically the record terminator, or VSTREAM_EOF.
+/*	The flags argument is VSTRING_GET_FLAG_NONE (default) or
+/*	VSTRING_GET_FLAG_APPEND (append instead of overwrite).
+/*
+/*	vstring_get_flags() reads one line from the named stream, including the
+/*	terminating newline character if present.
+/*
+/*	vstring_get_flags_nonl() reads a line from the named stream and strips
+/*	the trailing newline character.
+/*
+/*	vstring_get_flags_null() reads a null-terminated string from the named
+/*	stream.
+/*
+/*	the vstring_get_flags<whatever>_bound() routines read no more
+/*	than \fIbound\fR characters.  Otherwise they behave like the
+/*	unbounded versions documented above.
+/*
+/*	The functions without _flags in their name accept the same
+/*	arguments except flags. These functions use the default
+/*	flags value.
+/* DIAGNOSTICS
+/*	Fatal errors: memory allocation failure.
+/*	Panic: improper string bound.
+/* 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
+/*--*/
+
+/* System library. */
+
+#include "sys_defs.h"
+#include <stdio.h>
+#include <string.h>
+
+/* Application-specific. */
+
+#include "msg.h"
+#include "vstring.h"
+#include "vstream.h"
+#include "vstring_vstream.h"
+
+ /*
+  * Macro to return the last character added to a VSTRING, for consistency.
+  */
+#define VSTRING_GET_RESULT(vp, baselen) \
+    (VSTRING_LEN(vp) > (base_len) ? vstring_end(vp)[-1] : VSTREAM_EOF)
+
+/* vstring_get_flags - read line from file, keep newline */
+
+int     vstring_get_flags(VSTRING *vp, VSTREAM *fp, int flags)
+{
+    int     c;
+    ssize_t base_len;
+
+    if ((flags & VSTRING_GET_FLAG_APPEND) == 0)
+	VSTRING_RESET(vp);
+    base_len = VSTRING_LEN(vp);
+    while ((c = VSTREAM_GETC(fp)) != VSTREAM_EOF) {
+	VSTRING_ADDCH(vp, c);
+	if (c == '\n')
+	    break;
+    }
+    VSTRING_TERMINATE(vp);
+    return (VSTRING_GET_RESULT(vp, baselen));
+}
+
+/* vstring_get_flags_nonl - read line from file, strip newline */
+
+int     vstring_get_flags_nonl(VSTRING *vp, VSTREAM *fp, int flags)
+{
+    int     c;
+    ssize_t base_len;
+
+    if ((flags & VSTRING_GET_FLAG_APPEND) == 0)
+	VSTRING_RESET(vp);
+    base_len = VSTRING_LEN(vp);
+    while ((c = VSTREAM_GETC(fp)) != VSTREAM_EOF && c != '\n')
+	VSTRING_ADDCH(vp, c);
+    VSTRING_TERMINATE(vp);
+    return (c == '\n' ? c : VSTRING_GET_RESULT(vp, baselen));
+}
+
+/* vstring_get_flags_null - read null-terminated string from file */
+
+int     vstring_get_flags_null(VSTRING *vp, VSTREAM *fp, int flags)
+{
+    int     c;
+    ssize_t base_len;
+
+    if ((flags & VSTRING_GET_FLAG_APPEND) == 0)
+	VSTRING_RESET(vp);
+    base_len = VSTRING_LEN(vp);
+    while ((c = VSTREAM_GETC(fp)) != VSTREAM_EOF && c != 0)
+	VSTRING_ADDCH(vp, c);
+    VSTRING_TERMINATE(vp);
+    return (c == 0 ? c : VSTRING_GET_RESULT(vp, baselen));
+}
+
+/* vstring_get_flags_bound - read line from file, keep newline, up to bound */
+
+int     vstring_get_flags_bound(VSTRING *vp, VSTREAM *fp, int flags,
+				        ssize_t bound)
+{
+    int     c;
+    ssize_t base_len;
+
+    if (bound <= 0)
+	msg_panic("vstring_get_bound: invalid bound %ld", (long) bound);
+
+    if ((flags & VSTRING_GET_FLAG_APPEND) == 0)
+	VSTRING_RESET(vp);
+    base_len = VSTRING_LEN(vp);
+    while (bound-- > 0 && (c = VSTREAM_GETC(fp)) != VSTREAM_EOF) {
+	VSTRING_ADDCH(vp, c);
+	if (c == '\n')
+	    break;
+    }
+    VSTRING_TERMINATE(vp);
+    return (VSTRING_GET_RESULT(vp, baselen));
+}
+
+/* vstring_get_flags_nonl_bound - read line from file, strip newline, up to bound */
+
+int     vstring_get_flags_nonl_bound(VSTRING *vp, VSTREAM *fp, int flags,
+				             ssize_t bound)
+{
+    int     c;
+    ssize_t base_len;
+
+    if (bound <= 0)
+	msg_panic("vstring_get_nonl_bound: invalid bound %ld", (long) bound);
+
+    if ((flags & VSTRING_GET_FLAG_APPEND) == 0)
+	VSTRING_RESET(vp);
+    base_len = VSTRING_LEN(vp);
+    while (bound-- > 0 && (c = VSTREAM_GETC(fp)) != VSTREAM_EOF && c != '\n')
+	VSTRING_ADDCH(vp, c);
+    VSTRING_TERMINATE(vp);
+    return (c == '\n' ? c : VSTRING_GET_RESULT(vp, baselen));
+}
+
+/* vstring_get_flags_null_bound - read null-terminated string from file */
+
+int     vstring_get_flags_null_bound(VSTRING *vp, VSTREAM *fp, int flags,
+				             ssize_t bound)
+{
+    int     c;
+    ssize_t base_len;
+
+    if (bound <= 0)
+	msg_panic("vstring_get_null_bound: invalid bound %ld", (long) bound);
+
+    if ((flags & VSTRING_GET_FLAG_APPEND) == 0)
+	VSTRING_RESET(vp);
+    base_len = VSTRING_LEN(vp);
+    while (bound-- > 0 && (c = VSTREAM_GETC(fp)) != VSTREAM_EOF && c != 0)
+	VSTRING_ADDCH(vp, c);
+    VSTRING_TERMINATE(vp);
+    return (c == 0 ? c : VSTRING_GET_RESULT(vp, baselen));
+}
+
+#ifdef TEST
+
+ /*
+  * Proof-of-concept test program: copy the source to this module to stdout.
+  */
+#include <fcntl.h>
+
+#define TEXT_VSTREAM    "vstring_vstream.c"
+
+int     main(void)
+{
+    VSTRING *vp = vstring_alloc(1);
+    VSTREAM *fp;
+
+    if ((fp = vstream_fopen(TEXT_VSTREAM, O_RDONLY, 0)) == 0)
+	msg_fatal("open %s: %m", TEXT_VSTREAM);
+    while (vstring_fgets(vp, fp))
+	vstream_fprintf(VSTREAM_OUT, "%s", vstring_str(vp));
+    vstream_fclose(fp);
+    vstream_fflush(VSTREAM_OUT);
+    vstring_free(vp);
+    return (0);
+}
+
+#endif