add KEYPADHASH dialplan function (issue #6441)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@10113 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/funcs/func_strings.c b/funcs/func_strings.c
index 4d992b1b538712781e7b8fdd3f73f40966986ae7..e24fc1ea49fe1acebc4f592af9ea6848c7f3e4d5 100644 (file)
--- a/funcs/func_strings.c
+++ b/funcs/func_strings.c
@@ -349,6 +349,49 @@ static struct ast_custom_function eval_function = {
        .read = function_eval,
 };
 
+static int keypadhash(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
+{
+       char *bufptr, *dataptr;
+
+       for (bufptr = buf, dataptr = data; bufptr < buf + len - 1; dataptr++) {
+               if (*dataptr == '1') {
+                       *bufptr++ = '1';
+               } else if (strchr("AaBbCc2", *dataptr)) {
+                       *bufptr++ = '2';
+               } else if (strchr("DdEeFf3", *dataptr)) {
+                       *bufptr++ = '3';
+               } else if (strchr("GgHhIi4", *dataptr)) {
+                       *bufptr++ = '4';
+               } else if (strchr("JjKkLl5", *dataptr)) {
+                       *bufptr++ = '5';
+               } else if (strchr("MmNnOo6", *dataptr)) {
+                       *bufptr++ = '6';
+               } else if (strchr("PpQqRrSs7", *dataptr)) {
+                       *bufptr++ = '7';
+               } else if (strchr("TtUuVv8", *dataptr)) {
+                       *bufptr++ = '8';
+               } else if (strchr("WwXxYyZz9", *dataptr)) {
+                       *bufptr++ = '9';
+               } else if (*dataptr == '0') {
+                       *bufptr++ = '0';
+               } else if (*dataptr == '\0') {
+                       *bufptr++ = '\0';
+                       break;
+               }
+       }
+       buf[len - 1] = '\0';
+
+       return 0;
+}
+
+static struct ast_custom_function keypadhash_function = {
+       .name = "KEYPADHASH",
+       .synopsis = "Hash the letters in the string into the equivalent keypad numbers.",
+       .syntax = "KEYPADHASH(<string>)",
+       .read = keypadhash,
+       .desc = "Example:  ${KEYPADHASH(Les)} returns \"537\"\n",
+};
+
 static char *tdesc = "String handling dialplan functions";
 
 int unload_module(void)
@@ -363,6 +406,7 @@ int unload_module(void)
        res |= ast_custom_function_unregister(&strftime_function);
        res |= ast_custom_function_unregister(&strptime_function);
        res |= ast_custom_function_unregister(&eval_function);
+       res |= ast_custom_function_unregister(&keypadhash_function);
 
        return res;
 }
@@ -379,6 +423,7 @@ int load_module(void)
        res |= ast_custom_function_register(&strftime_function);
        res |= ast_custom_function_register(&strptime_function);
        res |= ast_custom_function_register(&eval_function);
+       res |= ast_custom_function_register(&keypadhash_function);
 
        return res;
 }