func_cut.c File Reference
CUT function. More...
#include "asterisk.h"#include "asterisk/file.h"#include "asterisk/channel.h"#include "asterisk/pbx.h"#include "asterisk/module.h"#include "asterisk/app.h"
Include dependency graph for func_cut.c:
Go to the source code of this file.
Data Structures | |
| struct | sortable_keys |
Defines | |
| #define | ERROR_NOARG (-1) |
| #define | ERROR_NOMEM (-2) |
| #define | ERROR_USAGE (-3) |
| #define | MAXRESULT 1024 |
Functions | |
| static void | __reg_module (void) |
| static void | __unreg_module (void) |
| static int | acf_cut_exec (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len) |
| static int | acf_sort_exec (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len) |
| static int | cut_internal (struct ast_channel *chan, char *data, char *buffer, size_t buflen) |
| static int | load_module (void) |
| static int | sort_internal (struct ast_channel *chan, char *data, char *buffer, size_t buflen) |
| static int | sort_subroutine (const void *arg1, const void *arg2) |
| static int | unload_module (void) |
Variables | |
| static struct ast_module_info __MODULE_INFO_SECTION | __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Cut out information from a string" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, } |
| struct ast_custom_function | acf_cut |
| struct ast_custom_function | acf_sort |
| static struct ast_module_info * | ast_module_info = &__mod_info |
Detailed Description
CUT function.
Definition in file func_cut.c.
Define Documentation
| #define ERROR_NOARG (-1) |
Definition at line 99 of file func_cut.c.
Referenced by acf_cut_exec(), acf_sort_exec(), cut_internal(), and sort_internal().
| #define ERROR_NOMEM (-2) |
Definition at line 100 of file func_cut.c.
Referenced by acf_cut_exec(), acf_sort_exec(), and cut_internal().
| #define ERROR_USAGE (-3) |
Definition at line 101 of file func_cut.c.
Referenced by acf_cut_exec(), and cut_internal().
| #define MAXRESULT 1024 |
Definition at line 81 of file func_cut.c.
Referenced by cut_internal().
Function Documentation
| static void __reg_module | ( | void | ) | [static] |
Definition at line 325 of file func_cut.c.
| static void __unreg_module | ( | void | ) | [static] |
Definition at line 325 of file func_cut.c.
| static int acf_cut_exec | ( | struct ast_channel * | chan, |
| const char * | cmd, | ||
| char * | data, | ||
| char * | buf, | ||
| size_t | len | ||
| ) | [static] |
Definition at line 271 of file func_cut.c.
References ast_log(), cut_internal(), ERROR_NOARG, ERROR_NOMEM, ERROR_USAGE, and LOG_ERROR.
{
int ret = -1;
switch (cut_internal(chan, data, buf, len)) {
case ERROR_NOARG:
ast_log(LOG_ERROR, "Syntax: CUT(<varname>,<char-delim>,<range-spec>) - missing argument!\n");
break;
case ERROR_NOMEM:
ast_log(LOG_ERROR, "Out of memory\n");
break;
case ERROR_USAGE:
ast_log(LOG_ERROR, "Usage: CUT(<varname>,<char-delim>,<range-spec>)\n");
break;
case 0:
ret = 0;
break;
default:
ast_log(LOG_ERROR, "Unknown internal error\n");
}
return ret;
}
| static int acf_sort_exec | ( | struct ast_channel * | chan, |
| const char * | cmd, | ||
| char * | data, | ||
| char * | buf, | ||
| size_t | len | ||
| ) | [static] |
Definition at line 250 of file func_cut.c.
References ast_log(), ERROR_NOARG, ERROR_NOMEM, LOG_ERROR, and sort_internal().
{
int ret = -1;
switch (sort_internal(chan, data, buf, len)) {
case ERROR_NOARG:
ast_log(LOG_ERROR, "SORT() requires an argument\n");
break;
case ERROR_NOMEM:
ast_log(LOG_ERROR, "Out of memory\n");
break;
case 0:
ret = 0;
break;
default:
ast_log(LOG_ERROR, "Unknown internal error\n");
}
return ret;
}
| static int cut_internal | ( | struct ast_channel * | chan, |
| char * | data, | ||
| char * | buffer, | ||
| size_t | buflen | ||
| ) | [static] |
Definition at line 154 of file func_cut.c.
References AST_APP_ARG, ast_copy_string(), AST_DECLARE_APP_ARGS, ast_get_encoded_char(), ast_log(), AST_STANDARD_APP_ARGS, ast_strdupa, ERROR_NOARG, ERROR_NOMEM, ERROR_USAGE, LOG_WARNING, MAXRESULT, parse(), pbx_substitute_variables_helper(), and strsep().
Referenced by acf_cut_exec().
{
char *parse;
size_t delim_consumed;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(varname);
AST_APP_ARG(delimiter);
AST_APP_ARG(field);
);
*buffer = '\0';
parse = ast_strdupa(data);
AST_STANDARD_APP_ARGS(args, parse);
/* Check and parse arguments */
if (args.argc < 3) {
return ERROR_NOARG;
} else {
char d, ds[2] = "";
char *tmp = alloca(strlen(args.varname) + 4);
char varvalue[MAXRESULT], *tmp2=varvalue;
if (tmp) {
snprintf(tmp, strlen(args.varname) + 4, "${%s}", args.varname);
} else {
return ERROR_NOMEM;
}
if (ast_get_encoded_char(args.delimiter, ds, &delim_consumed))
ast_copy_string(ds, "-", sizeof(ds));
/* String form of the delimiter, for use with strsep(3) */
d = *ds;
pbx_substitute_variables_helper(chan, tmp, tmp2, MAXRESULT - 1);
if (tmp2) {
int curfieldnum = 1, firstfield = 1;
while (tmp2 != NULL && args.field != NULL) {
char *nextgroup = strsep(&(args.field), "&");
int num1 = 0, num2 = MAXRESULT;
char trashchar;
if (sscanf(nextgroup, "%30d-%30d", &num1, &num2) == 2) {
/* range with both start and end */
} else if (sscanf(nextgroup, "-%30d", &num2) == 1) {
/* range with end */
num1 = 0;
} else if ((sscanf(nextgroup, "%30d%1c", &num1, &trashchar) == 2) && (trashchar == '-')) {
/* range with start */
num2 = MAXRESULT;
} else if (sscanf(nextgroup, "%30d", &num1) == 1) {
/* single number */
num2 = num1;
} else {
return ERROR_USAGE;
}
/* Get to start, if any */
if (num1 > 0) {
while (tmp2 != (char *)NULL + 1 && curfieldnum < num1) {
tmp2 = strchr(tmp2, d) + 1;
curfieldnum++;
}
}
/* Most frequent problem is the expectation of reordering fields */
if ((num1 > 0) && (curfieldnum > num1))
ast_log(LOG_WARNING, "We're already past the field you wanted?\n");
/* Re-null tmp2 if we added 1 to NULL */
if (tmp2 == (char *)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(buffer);
if (firstfield) {
snprintf(buffer, buflen, "%s", tmp3);
firstfield = 0;
} else {
snprintf(buffer + curlen, buflen - curlen, "%c%s", d, tmp3);
}
curfieldnum++;
}
}
}
}
return 0;
}
| static int load_module | ( | void | ) | [static] |
Definition at line 315 of file func_cut.c.
References ast_custom_function_register.
{
int res = 0;
res |= ast_custom_function_register(&acf_cut);
res |= ast_custom_function_register(&acf_sort);
return res;
}
| static int sort_internal | ( | struct ast_channel * | chan, |
| char * | data, | ||
| char * | buffer, | ||
| size_t | buflen | ||
| ) | [static] |
Definition at line 103 of file func_cut.c.
References ast_strdupa, ERROR_NOARG, sortable_keys::key, sort_subroutine(), strsep(), and sortable_keys::value.
Referenced by acf_sort_exec().
{
char *strings, *ptrkey, *ptrvalue;
int count=1, count2, element_count=0;
struct sortable_keys *sortable_keys;
*buffer = '\0';
if (!data)
return ERROR_NOARG;
strings = ast_strdupa(data);
for (ptrkey = strings; *ptrkey; ptrkey++) {
if (*ptrkey == ',')
count++;
}
sortable_keys = alloca(count * sizeof(struct sortable_keys));
memset(sortable_keys, 0, count * sizeof(struct sortable_keys));
/* Parse each into a struct */
count2 = 0;
while ((ptrkey = strsep(&strings, ","))) {
ptrvalue = strchr(ptrkey, ':');
if (!ptrvalue) {
count--;
continue;
}
*ptrvalue++ = '\0';
sortable_keys[count2].key = ptrkey;
sscanf(ptrvalue, "%30f", &sortable_keys[count2].value);
count2++;
}
/* Sort the structs */
qsort(sortable_keys, count, sizeof(struct sortable_keys), sort_subroutine);
for (count2 = 0; count2 < count; count2++) {
int blen = strlen(buffer);
if (element_count++) {
strncat(buffer + blen, ",", buflen - blen - 1);
blen++;
}
strncat(buffer + blen, sortable_keys[count2].key, buflen - blen - 1);
}
return 0;
}
| static int sort_subroutine | ( | const void * | arg1, |
| const void * | arg2 | ||
| ) | [static] |
Definition at line 88 of file func_cut.c.
References sortable_keys::value.
Referenced by sort_internal().
{
const struct sortable_keys *one=arg1, *two=arg2;
if (one->value < two->value)
return -1;
else if (one->value == two->value)
return 0;
else
return 1;
}
| static int unload_module | ( | void | ) | [static] |
Definition at line 305 of file func_cut.c.
References ast_custom_function_unregister().
{
int res = 0;
res |= ast_custom_function_unregister(&acf_cut);
res |= ast_custom_function_unregister(&acf_sort);
return res;
}
Variable Documentation
struct ast_module_info __MODULE_INFO_SECTION __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Cut out information from a string" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, } [static] |
Definition at line 325 of file func_cut.c.
| struct ast_custom_function acf_cut |
Initial value:
{
.name = "CUT",
.read = acf_cut_exec,
}
Definition at line 300 of file func_cut.c.
| struct ast_custom_function acf_sort |
Initial value:
{
.name = "SORT",
.read = acf_sort_exec,
}
Definition at line 295 of file func_cut.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 325 of file func_cut.c.
