Adding upstream version 3.4.23.upstream/3.4.23upstream

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

1 files changed, 326 insertions, 0 deletions

diff --git a/src/util/argv.c b/src/util/argv.c
new file mode 100644
index 0000000..d6a4ef3
--- /dev/null
+++ b/src/util/argv.c
@@ -0,0 +1,326 @@
+/*++
+/* NAME
+/*	argv 3
+/* SUMMARY
+/*	string array utilities
+/* SYNOPSIS
+/*	#include <argv.h>
+/*
+/*	ARGV	*argv_alloc(len)
+/*	ssize_t	len;
+/*
+/*	ARGV    *argv_sort(argvp)
+/*	ARGV    *argvp;
+/*
+/*	ARGV	*argv_free(argvp)
+/*	ARGV	*argvp;
+/*
+/*	void	argv_add(argvp, arg, ..., ARGV_END)
+/*	ARGV	*argvp;
+/*	char	*arg;
+/*
+/*	void	argv_addn(argvp, arg, arg_len, ..., ARGV_END)
+/*	ARGV	*argvp;
+/*	char	*arg;
+/*	ssize_t	arg_len;
+/*
+/*	void	argv_terminate(argvp);
+/*	ARGV	*argvp;
+/*
+/*	void	argv_truncate(argvp, len);
+/*	ARGV	*argvp;
+/*	ssize_t	len;
+/*
+/*	void	argv_insert_one(argvp, pos, arg)
+/*	ARGV	*argvp;
+/*	ssize_t	pos;
+/*	const char *arg;
+/*
+/*	void	argv_replace_one(argvp, pos, arg)
+/*	ARGV	*argvp;
+/*	ssize_t	pos;
+/*	const char *arg;
+/*
+/*	void	argv_delete(argvp, pos, how_many)
+/*	ARGV	*argvp;
+/*	ssize_t	pos;
+/*	ssize_t	how_many;
+/*
+/*	void	ARGV_FAKE_BEGIN(argv, arg)
+/*	const char *arg;
+/*
+/*	void	ARGV_FAKE_END
+/* DESCRIPTION
+/*	The functions in this module manipulate arrays of string
+/*	pointers. An ARGV structure contains the following members:
+/* .IP len
+/*	The length of the \fIargv\fR array member.
+/* .IP argc
+/*	The number of \fIargv\fR elements used.
+/* .IP argv
+/*	An array of pointers to null-terminated strings.
+/* .PP
+/*	argv_alloc() returns an empty string array of the requested
+/*	length. The result is ready for use by argv_add(). The array
+/*	is null terminated.
+/*
+/*	argv_sort() sorts the elements of argvp in place returning
+/*	the original array.
+/*
+/*	argv_add() copies zero or more strings and adds them to the
+/*	specified string array. The array is null terminated.
+/*	Terminate the argument list with a null pointer. The manifest
+/*	constant ARGV_END provides a convenient notation for this.
+/*
+/*	argv_addn() is like argv_add(), but each string is followed
+/*	by a string length argument.
+/*
+/*	argv_free() releases storage for a string array, and conveniently
+/*	returns a null pointer.
+/*
+/*	argv_terminate() null-terminates its string array argument.
+/*
+/*	argv_truncate() trucates its argument to the specified
+/*	number of entries, but does not reallocate memory. The
+/*	result is null-terminated.
+/*
+/*	argv_insert_one() inserts one string at the specified array
+/*	position.
+/*
+/*	argv_replace_one() replaces one string at the specified
+/*	position. The old string is destroyed after the update is
+/*	made.
+/*
+/*	argv_delete() deletes the specified number of elements
+/*	starting at the specified array position. The result is
+/*	null-terminated.
+/*
+/*	ARGV_FAKE_BEGIN/END are an optimization for the case where
+/*	a single string needs to be passed into an ARGV-based
+/*	interface.  ARGV_FAKE_BEGIN() opens a statement block and
+/*	allocates a stack-based ARGV structure named after the first
+/*	argument, that encapsulates the second argument.  This
+/*	implementation allocates no heap memory and creates no copy
+/*	of the second argument.  ARGV_FAKE_END closes the statement
+/*	block and thereby releases storage.
+/* SEE ALSO
+/*	msg(3) diagnostics interface
+/* DIAGNOSTICS
+/*	Fatal errors: memory allocation problem.
+/* 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
+/*--*/
+
+/* System libraries. */
+
+#include <sys_defs.h>
+#include <stdlib.h>			/* 44BSD stdarg.h uses abort() */
+#include <stdarg.h>
+#include <string.h>
+
+/* Application-specific. */
+
+#include "mymalloc.h"
+#include "msg.h"
+#include "argv.h"
+
+/* argv_free - destroy string array */
+
+ARGV   *argv_free(ARGV *argvp)
+{
+    char  **cpp;
+
+    for (cpp = argvp->argv; cpp < argvp->argv + argvp->argc; cpp++)
+	myfree(*cpp);
+    myfree((void *) argvp->argv);
+    myfree((void *) argvp);
+    return (0);
+}
+
+/* argv_alloc - initialize string array */
+
+ARGV   *argv_alloc(ssize_t len)
+{
+    ARGV   *argvp;
+    ssize_t sane_len;
+
+    /*
+     * Make sure that always argvp->argc < argvp->len.
+     */
+    argvp = (ARGV *) mymalloc(sizeof(*argvp));
+    argvp->len = 0;
+    sane_len = (len < 2 ? 2 : len);
+    argvp->argv = (char **) mymalloc((sane_len + 1) * sizeof(char *));
+    argvp->len = sane_len;
+    argvp->argc = 0;
+    argvp->argv[0] = 0;
+    return (argvp);
+}
+
+static int argv_cmp(const void *e1, const void *e2)
+{
+    const char *s1 = *(const char **) e1;
+    const char *s2 = *(const char **) e2;
+
+    return strcmp(s1, s2);
+}
+
+/* argv_sort - sort array in place */
+
+ARGV   *argv_sort(ARGV *argvp)
+{
+    qsort(argvp->argv, argvp->argc, sizeof(argvp->argv[0]), argv_cmp);
+    return (argvp);
+}
+
+/* argv_extend - extend array */
+
+static void argv_extend(ARGV *argvp)
+{
+    ssize_t new_len;
+
+    new_len = argvp->len * 2;
+    argvp->argv = (char **)
+	myrealloc((void *) argvp->argv, (new_len + 1) * sizeof(char *));
+    argvp->len = new_len;
+}
+
+/* argv_add - add string to vector */
+
+void    argv_add(ARGV *argvp,...)
+{
+    char   *arg;
+    va_list ap;
+
+    /*
+     * Make sure that always argvp->argc < argvp->len.
+     */
+#define ARGV_SPACE_LEFT(a) ((a)->len - (a)->argc - 1)
+
+    va_start(ap, argvp);
+    while ((arg = va_arg(ap, char *)) != 0) {
+	if (ARGV_SPACE_LEFT(argvp) <= 0)
+	    argv_extend(argvp);
+	argvp->argv[argvp->argc++] = mystrdup(arg);
+    }
+    va_end(ap);
+    argvp->argv[argvp->argc] = 0;
+}
+
+/* argv_addn - add string to vector */
+
+void    argv_addn(ARGV *argvp,...)
+{
+    char   *arg;
+    ssize_t len;
+    va_list ap;
+
+    /*
+     * Make sure that always argvp->argc < argvp->len.
+     */
+    va_start(ap, argvp);
+    while ((arg = va_arg(ap, char *)) != 0) {
+	if ((len = va_arg(ap, ssize_t)) < 0)
+	    msg_panic("argv_addn: bad string length %ld", (long) len);
+	if (ARGV_SPACE_LEFT(argvp) <= 0)
+	    argv_extend(argvp);
+	argvp->argv[argvp->argc++] = mystrndup(arg, len);
+    }
+    va_end(ap);
+    argvp->argv[argvp->argc] = 0;
+}
+
+/* argv_terminate - terminate string array */
+
+void    argv_terminate(ARGV *argvp)
+{
+
+    /*
+     * Trust that argvp->argc < argvp->len.
+     */
+    argvp->argv[argvp->argc] = 0;
+}
+
+/* argv_truncate - truncate string array */
+
+void    argv_truncate(ARGV *argvp, ssize_t len)
+{
+    char  **cpp;
+
+    /*
+     * Sanity check.
+     */
+    if (len < 0)
+	msg_panic("argv_truncate: bad length %ld", (long) len);
+
+    if (len < argvp->argc) {
+	for (cpp = argvp->argv + len; cpp < argvp->argv + argvp->argc; cpp++)
+	    myfree(*cpp);
+	argvp->argc = len;
+	argvp->argv[argvp->argc] = 0;
+    }
+}
+
+/* argv_insert_one - insert one string into array */
+
+void    argv_insert_one(ARGV *argvp, ssize_t where, const char *arg)
+{
+    ssize_t pos;
+
+    /*
+     * Sanity check.
+     */
+    if (where < 0 || where > argvp->argc)
+	msg_panic("argv_insert_one bad position: %ld", (long) where);
+
+    if (ARGV_SPACE_LEFT(argvp) <= 0)
+	argv_extend(argvp);
+    for (pos = argvp->argc; pos >= where; pos--)
+	argvp->argv[pos + 1] = argvp->argv[pos];
+    argvp->argv[where] = mystrdup(arg);
+    argvp->argc += 1;
+}
+
+/* argv_replace_one - replace one string in array */
+
+void    argv_replace_one(ARGV *argvp, ssize_t where, const char *arg)
+{
+    char   *temp;
+
+    /*
+     * Sanity check.
+     */
+    if (where < 0 || where >= argvp->argc)
+	msg_panic("argv_replace_one bad position: %ld", (long) where);
+
+    temp = argvp->argv[where];
+    argvp->argv[where] = mystrdup(arg);
+    myfree(temp);
+}
+
+/* argv_delete - remove string(s) from array */
+
+void    argv_delete(ARGV *argvp, ssize_t first, ssize_t how_many)
+{
+    ssize_t pos;
+
+    /*
+     * Sanity check.
+     */
+    if (first < 0 || how_many < 0 || first + how_many > argvp->argc)
+	msg_panic("argv_delete bad range: (start=%ld count=%ld)",
+		  (long) first, (long) how_many);
+
+    for (pos = first; pos < first + how_many; pos++)
+	myfree(argvp->argv[pos]);
+    for (pos = first; pos <= argvp->argc - how_many; pos++)
+	argvp->argv[pos] = argvp->argv[pos + how_many];
+    argvp->argc -= how_many;
+}