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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
commitb5896ba9f6047e7031e2bdee0622d543e11a6734 (patch)
treefd7b460593a2fee1be579bec5697e6d887ea3421 /src/global/tok822_node.c
parentInitial commit. (diff)
downloadpostfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.tar.xz
postfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.zip
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/global/tok822_node.c')
-rw-r--r--src/global/tok822_node.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/src/global/tok822_node.c b/src/global/tok822_node.c
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+/*++
+/* NAME
+/* tok822_node 3
+/* SUMMARY
+/* token memory management
+/* SYNOPSIS
+/* #include <tok822.h>
+/*
+/* TOK822 *tok822_alloc(type, strval)
+/* int type;
+/* const char *strval;
+/*
+/* TOK822 *tok822_free(tp)
+/* TOK822 *tp;
+/* DESCRIPTION
+/* This module implements memory management for token
+/* structures. A distinction is made between single-character
+/* tokens that have no string value, and string-valued tokens.
+/*
+/* tok822_alloc() allocates memory for a token structure of
+/* the named type, and initializes it properly. In case of
+/* a single-character token, no string memory is allocated.
+/* Otherwise, \fIstrval\fR is a null pointer or provides
+/* string data to initialize the token with.
+/*
+/* tok822_free() releases the memory used for the specified token
+/* and conveniently returns a null pointer value.
+/* 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 library. */
+
+#include <sys_defs.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <mymalloc.h>
+#include <vstring.h>
+
+/* Global library. */
+
+#include "tok822.h"
+
+/* tok822_alloc - allocate and initialize token */
+
+TOK822 *tok822_alloc(int type, const char *strval)
+{
+ TOK822 *tp;
+
+#define CONTAINER_TOKEN(x) \
+ ((x) == TOK822_ADDR || (x) == TOK822_STARTGRP)
+
+ tp = (TOK822 *) mymalloc(sizeof(*tp));
+ tp->type = type;
+ tp->next = tp->prev = tp->head = tp->tail = tp->owner = 0;
+ tp->vstr = (type < TOK822_MINTOK || CONTAINER_TOKEN(type) ? 0 :
+ strval == 0 ? vstring_alloc(10) :
+ vstring_strcpy(vstring_alloc(strlen(strval) + 1), strval));
+ return (tp);
+}
+
+/* tok822_free - destroy token */
+
+TOK822 *tok822_free(TOK822 *tp)
+{
+ if (tp->vstr)
+ vstring_free(tp->vstr);
+ myfree((void *) tp);
+ return (0);
+}