diff options
author | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2005-05-05 05:39:33 +0000 |
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committer | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2005-05-05 05:39:33 +0000 |
commit | 6a262d98eeee9e0b4bfac92d88aacad6c4fab935 (patch) | |
tree | d1f6c678019f87fb5730998dc62af2c209dc66d6 /funcs/func_logic.c | |
parent | 7fe9220d99afa1950199d7effe66b81aa2ec64b7 (diff) |
major re-work of dialplan functions, including:
- locking of functions list during registration/unregistration/searching
- rename of function description structure to be consistent with the rest of the API
- addition of 'desc' element to description structure, for detailed description (like applications)
- addition of 'show function' CLI command to show function details
- conversion of existing functions to use uppercase names to match policy
- creation of new 'pbx_functions.so' module to contain standard 'builtin' functions
- removal of all builtin functions from pbx.c and apps and placement into new 'funcs' directory
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@5583 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'funcs/func_logic.c')
-rwxr-xr-x | funcs/func_logic.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/funcs/func_logic.c b/funcs/func_logic.c new file mode 100755 index 000000000..f7f2c8e5c --- /dev/null +++ b/funcs/func_logic.c @@ -0,0 +1,100 @@ +/* + * Asterisk -- A telephony toolkit for Linux. + * + * MD5 digest related dialplan functions + * + * Copyright (C) 2005, Digium, Inc. + * + * This program is free software, distributed under the terms of + * the GNU General Public License + */ + +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> + +#include "asterisk/channel.h" +#include "asterisk/pbx.h" +#include "asterisk/logger.h" +#include "asterisk/utils.h" +#include "asterisk/app.h" +#include "asterisk/config.h" /* for ast_true */ + +static char *builtin_function_isnull(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len) +{ + char *ret_true = "1", *ret_false = "0"; + + return data && *data ? ret_false : ret_true; +} + +static char *builtin_function_exists(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len) +{ + char *ret_true = "1", *ret_false = "0"; + + return data && *data ? ret_true : ret_false; +} + +static char *builtin_function_if(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len) +{ + char *ret = NULL; + char *mydata = NULL; + char *expr = NULL; + char *iftrue = NULL; + char *iffalse = NULL; + + if((mydata = ast_strdupa(data))) { + expr = mydata; + if ((iftrue = strchr(mydata, '?'))) { + *iftrue = '\0'; + iftrue++; + if ((iffalse = strchr(iftrue, ':'))) { + *iffalse = '\0'; + iffalse++; + } + } else + iffalse = ""; + if (expr && iftrue) { + ret = ast_true(expr) ? iftrue : iffalse; + strncpy(buf, ret, len); + ret = buf; + } else { + ast_log(LOG_WARNING, "Syntax $(if <expr>?[<truecond>][:<falsecond>])\n"); + ret = NULL; + } + } else { + ast_log(LOG_WARNING, "Memory Error!\n"); + ret = NULL; + } + + return ret; +} + +#ifndef BUILTIN_FUNC +static +#endif +struct ast_custom_function isnull_function = { + .name = "ISNULL", + .synopsis = "NULL Test: Returns 1 if NULL or 0 otherwise", + .syntax = "ISNULL(<data>)", + .read = builtin_function_isnull, +}; + +#ifndef BUILTIN_FUNC +static +#endif +struct ast_custom_function exists_function = { + .name = "EXISTS", + .synopsis = "Existence Test: Returns 1 if exists, 0 otherwise", + .syntax = "EXISTS(<data>)", + .read = builtin_function_exists, +}; + +#ifndef BUILTIN_FUNC +static +#endif +struct ast_custom_function if_function = { + .name = "IF", + .synopsis = "Conditional: Returns the data following '?' if true else the data following ':'", + .syntax = "IF(<expr>?<true>:<false>)", + .read = builtin_function_if, +}; |