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c0b1e88e8a
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5867 65c4cc65-6c06-0410-ace0-fbb531ad65f3
140 lines
3.9 KiB
C
Executable File
140 lines
3.9 KiB
C
Executable File
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Skeleton application
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*
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* Copyright (C) 1999, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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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 <sys/types.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/file.h"
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#include "asterisk/logger.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/pbx.h"
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#include "asterisk/lock.h"
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static char *tdesc = "(Deprecated) Save substring digits in a given variable";
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static char *descrip =
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" (Deprecated, use ${variable:a:b} instead)\n"
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"\n"
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" SubString(variable=string_of_digits|count1|count2): Assigns the substring\n"
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"of string_of_digits to a given variable. Parameter count1 may be positive\n"
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"or negative. If it's positive then we skip the first count1 digits from the\n"
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"left. If it's negative, we move count1 digits counting from the end of\n"
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"the string to the left. Parameter count2 implies how many digits we are\n"
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"taking from the point that count1 placed us. If count2 is negative, then\n"
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"that many digits are omitted from the end.\n"
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"For example:\n"
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"exten => _NXXXXXX,1,SubString,test=2564286161|0|3\n"
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"assigns the area code (3 first digits) to variable test.\n"
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"exten => _NXXXXXX,1,SubString,test=2564286161|-7|7\n"
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"assigns the last 7 digits to variable test.\n"
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"exten => _NXXXXXX,1,SubString,test=2564286161|0|-4\n"
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"assigns all but the last 4 digits to variable test.\n"
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"If there are no parameters it'll return with -1.\n"
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"If there wrong parameters it go on and return with 0\n";
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static char *app = "SubString";
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static char *synopsis = "(Deprecated) Save substring digits in a given variable";
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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static int substring_exec(struct ast_channel *chan, void *data)
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{
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char newexten[AST_MAX_EXTENSION] = "";
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char *count1, *count2;
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char *first, *second, *stringp;
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stringp=alloca(strlen(data)+1);
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ast_log(LOG_WARNING, "The use of Substring application is deprecated. Please use ${variable:a:b} instead\n");
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strncpy(stringp,data,strlen(data));
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if (strchr(stringp,'|')&&strchr(stringp,'=')) {
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int icount1,icount2;
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first=strsep(&stringp,"=");
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second=strsep(&stringp,"|");
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count1=strsep(&stringp,"|");
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count2=strsep(&stringp,"\0");
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if (!first || !second || !count1 || !count2) {
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ast_log(LOG_DEBUG, "Ignoring, since there is no argument: variable or string or count1 or count2\n");
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return 0;
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}
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icount1=atoi(count1);
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icount2=atoi(count2);
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if (icount2<0) {
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icount2 = icount2 + strlen(second);
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}
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if (abs(icount1)>strlen(second)) {
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ast_log(LOG_WARNING, "Limiting count1 parameter because it exceeds the length of the string\n");
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if (icount1>=0)
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icount1=strlen(second);
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else
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icount1=0;
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}
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if ((icount1<0 && icount2>-icount1) || (icount1>=0 && icount1+icount2>strlen(second))) {
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ast_log(LOG_WARNING, "Limiting count2 parameter because it exceeds the length of the string\n");
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if (icount1>=0)
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icount2=strlen(second)-icount1;
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else
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icount2=strlen(second)+icount1;
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}
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if (first&&second) {
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if (icount1>=0)
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strncpy(newexten,second+icount1,icount2);
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else
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strncpy(newexten,second+strlen(second)+icount1,icount2);
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pbx_builtin_setvar_helper(chan,first,newexten);
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}
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} else {
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ast_log(LOG_DEBUG, "Ignoring, no parameters\n");
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}
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return 0;
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}
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int unload_module(void)
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{
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STANDARD_HANGUP_LOCALUSERS;
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return ast_unregister_application(app);
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}
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int load_module(void)
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{
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return ast_register_application(app, substring_exec, synopsis, descrip);
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}
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char *description(void)
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{
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return tdesc;
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}
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int usecount(void)
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{
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int res;
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STANDARD_USECOUNT(res);
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return res;
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}
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char *key()
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{
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return ASTERISK_GPL_KEY;
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}
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