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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_find.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_find.c')
-rw-r--r--src/global/tok822_find.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/src/global/tok822_find.c b/src/global/tok822_find.c
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+/*++
+/* NAME
+/* tok822_find 3
+/* SUMMARY
+/* token list search operators
+/* SYNOPSIS
+/* #include <tok822.h>
+/*
+/* TOK822 *tok822_find_type(head, type)
+/* TOK822 *head;
+/* int type;
+/*
+/* TOK822 *tok822_rfind_type(tail, type)
+/* TOK822 *tail;
+/* int type;
+/* DESCRIPTION
+/* This module implements token list search operations.
+/*
+/* tok822_find_type() searches a list of tokens for the first
+/* instance of the specified token type. The result is the
+/* found token or a null pointer when the search failed.
+/*
+/* tok822_rfind_type() searches a list of tokens in reverse direction
+/* for the first instance of the specified token type. The result
+/* is the found token or a null pointer when the search failed.
+/* 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>
+
+/* Utility library. */
+
+#include <vstring.h>
+
+/* Global library. */
+
+#include <tok822.h>
+
+/* tok822_find_type - find specific token type, forward search */
+
+TOK822 *tok822_find_type(TOK822 *head, int op)
+{
+ TOK822 *tp;
+
+ for (tp = head; tp != 0 && tp->type != op; tp = tp->next)
+ /* void */ ;
+ return (tp);
+}
+
+/* tok822_rfind_type - find specific token type, backward search */
+
+TOK822 *tok822_rfind_type(TOK822 *tail, int op)
+{
+ TOK822 *tp;
+
+ for (tp = tail; tp != 0 && tp->type != op; tp = tp->prev)
+ /* void */ ;
+ return (tp);
+}