diff --git a/apps/Makefile b/apps/Makefile index fa3591ab30..b2ed7b473b 100755 --- a/apps/Makefile +++ b/apps/Makefile @@ -24,7 +24,7 @@ APPS=app_dial.so app_playback.so app_voicemail.so app_directory.so app_intercom. app_authenticate.so app_softhangup.so app_lookupblacklist.so \ app_waitforring.so app_privacy.so app_db.so app_chanisavail.so \ app_enumlookup.so app_voicemail2.so app_transfer.so app_setcidnum.so app_cdr.so \ - app_hasnewvoicemail.so app_sayunixtime.so + app_hasnewvoicemail.so app_sayunixtime.so app_cut.so #APPS+=app_sql_postgres.so #APPS+=app_sql_odbc.so diff --git a/apps/app_cut.c b/apps/app_cut.c new file mode 100755 index 0000000000..f046689292 --- /dev/null +++ b/apps/app_cut.c @@ -0,0 +1,198 @@ +/* + * Asterisk -- A telephony toolkit for Linux. + * + * Cut application + * + * Copyright (c) 2003 Tilghman Lesher. All rights reserved. + * + * Tilghman Lesher + * + * $Id$ + * + * This code is released by the author with no restrictions on usage. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Maximum length of any variable */ +#define MAXRESULT 1024 + +static char *tdesc = "Cuts up variables"; + +static char *app_cut = "Cut"; + +static char *cut_synopsis = "Cut(newvar=varname|delimiter|fieldspec)"; + +static char *cut_descrip = +"Cut(varname=varname,delimiter,field)\n" +" newvar - result string is set to this variable\n" +" varname - variable you want cut\n" +" delimiter - defaults to -\n" +" fieldspec - number of the field you want (1-based offset)\n" +" may also be specified as a range (with -)\n" +" or group of ranges and fields (with &)\n" +" Returns 0 or -1 on hangup or error.\n"; + +STANDARD_LOCAL_USER; + +LOCAL_USER_DECL; + +static int cut_exec(struct ast_channel *chan, void *data) +{ + int res=0; + struct localuser *u; + char *s, *newvar=NULL, *varname=NULL, *delimiter=NULL, *field=NULL; + int args_okay = 0; + + LOCAL_USER_ADD(u); + + /* Check and parse arguments */ + if (data) { + s = strdupa((char *)data); + if (s) { + newvar = strsep(&s, "="); + if (newvar && (newvar[0] != '\0')) { + varname = strsep(&s, "|"); + if (varname && (varname[0] != '\0')) { + delimiter = strsep(&s, "|"); + if (delimiter) { + field = strsep(&s, "|"); + if (field) { + args_okay = 1; + } + } + } + } + } else { + ast_log(LOG_ERROR, "Out of memory\n"); + res = -1; + } + } + + if (args_okay) { + char d, ds[2]; + char *tmp = alloca(strlen(varname) + 4); + char *tmp2 = alloca(MAXRESULT); + char retstring[MAXRESULT]; + + memset(retstring, 0, MAXRESULT); + + if (tmp && tmp2) { + snprintf(tmp, strlen(varname) + 4, "${%s}", varname); + memset(tmp2, 0, sizeof(tmp2)); + } else { + ast_log(LOG_ERROR, "Out of memory"); + return -1; + } + + if (delimiter[0]) + d = delimiter[0]; + else + d = '-'; + + /* String form of the delimiter, for use with strsep(3) */ + sprintf(ds,"%c",d); + + pbx_substitute_variables_helper(chan, tmp, tmp2, MAXRESULT - 1); + + if (tmp2) { + int curfieldnum = 1; + while ((tmp2 != NULL) && (field != NULL)) { + char *nextgroup = strsep(&field, "&"); + int num1 = 0, num2 = MAXRESULT; + char trashchar; + + if (sscanf(nextgroup, "%d-%d", &num1, &num2) == 2) { + /* range with both start and end */ + } else if (sscanf(nextgroup, "-%d", &num2) == 1) { + /* range with end */ + num1 = 0; + } else if ((sscanf(nextgroup, "%d%c", &num1, &trashchar) == 2) && (trashchar == '-')) { + /* range with start */ + num2 = MAXRESULT; + } else if (sscanf(nextgroup, "%d", &num1) == 1) { + /* single number */ + num2 = num1; + } else { + ast_log(LOG_ERROR, "Cut(): Illegal range '%s'\n", nextgroup); + ast_log(LOG_ERROR, "Usage: %s\n", cut_synopsis); + return -1; + } + + /* Get to start, if any */ + if (num1 > 0) { + while ((tmp2 != NULL + 1) && (curfieldnum < num1)) { + tmp2 = index(tmp2, d) + 1; + curfieldnum++; + } + } + + /* Most frequent problem is the expectation of reordering fields */ + if ((num1 > 0) && (curfieldnum > num1)) { + ast_log(LOG_WARNING, "Cut(): we're already past the field you wanted?\n"); + } + + /* Re-null tmp2 if we added 1 to NULL */ + if (tmp2 == NULL + 1) + tmp2 = NULL; + + /* Output fields until we either run out of fields or num2 is reached */ + while ((tmp2 != NULL) && (curfieldnum <= num2)) { + char *tmp3 = strsep(&tmp2, ds); + int curlen = strlen(retstring); + + if (strlen(retstring)) { + snprintf(retstring + curlen, MAXRESULT - curlen, "%c%s", d, tmp3); + } else { + snprintf(retstring, MAXRESULT, "%s", tmp3); + } + + curfieldnum++; + } + } + } + + pbx_builtin_setvar_helper(chan, newvar, retstring); + } + + LOCAL_USER_REMOVE(u); + return res; +} + +int unload_module(void) +{ + STANDARD_HANGUP_LOCALUSERS; + return ast_unregister_application(app_cut); +} + +int load_module(void) +{ + return ast_register_application(app_cut, cut_exec, cut_synopsis, cut_descrip); +} + +char *description(void) +{ + return tdesc; +} + +int usecount(void) +{ + int res; + STANDARD_USECOUNT(res); + return res; +} + +char *key() +{ + return ASTERISK_GPL_KEY; +}