7cd4ac0ee1
restore appropriate copyrights for functions that came from files with copyrights listed git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5587 65c4cc65-6c06-0410-ace0-fbb531ad65f3
102 lines
2.4 KiB
C
Executable file
102 lines
2.4 KiB
C
Executable file
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Conditional logic dialplan functions
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*
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* Copyright (C) 2005, Digium, Inc.
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* Portions Copyright (C) 2005, Anthony Minessale II
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/logger.h"
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#include "asterisk/utils.h"
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#include "asterisk/app.h"
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#include "asterisk/config.h" /* for ast_true */
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static char *builtin_function_isnull(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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char *ret_true = "1", *ret_false = "0";
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return data && *data ? ret_false : ret_true;
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}
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static char *builtin_function_exists(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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char *ret_true = "1", *ret_false = "0";
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return data && *data ? ret_true : ret_false;
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}
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static char *builtin_function_if(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
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{
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char *ret = NULL;
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char *mydata = NULL;
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char *expr = NULL;
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char *iftrue = NULL;
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char *iffalse = NULL;
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if((mydata = ast_strdupa(data))) {
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expr = mydata;
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if ((iftrue = strchr(mydata, '?'))) {
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*iftrue = '\0';
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iftrue++;
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if ((iffalse = strchr(iftrue, ':'))) {
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*iffalse = '\0';
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iffalse++;
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}
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} else
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iffalse = "";
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if (expr && iftrue) {
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ret = ast_true(expr) ? iftrue : iffalse;
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strncpy(buf, ret, len);
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ret = buf;
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} else {
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ast_log(LOG_WARNING, "Syntax $(if <expr>?[<truecond>][:<falsecond>])\n");
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ret = NULL;
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}
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} else {
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ast_log(LOG_WARNING, "Memory Error!\n");
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ret = NULL;
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}
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return ret;
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}
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#ifndef BUILTIN_FUNC
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static
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#endif
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struct ast_custom_function isnull_function = {
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.name = "ISNULL",
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.synopsis = "NULL Test: Returns 1 if NULL or 0 otherwise",
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.syntax = "ISNULL(<data>)",
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.read = builtin_function_isnull,
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};
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#ifndef BUILTIN_FUNC
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static
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#endif
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struct ast_custom_function exists_function = {
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.name = "EXISTS",
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.synopsis = "Existence Test: Returns 1 if exists, 0 otherwise",
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.syntax = "EXISTS(<data>)",
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.read = builtin_function_exists,
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};
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#ifndef BUILTIN_FUNC
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static
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#endif
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struct ast_custom_function if_function = {
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.name = "IF",
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.synopsis = "Conditional: Returns the data following '?' if true else the data following ':'",
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.syntax = "IF(<expr>?<true>:<false>)",
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.read = builtin_function_if,
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};
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