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"
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) |
Functions | |
static int | acf_cut_exec (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len) |
static int | acf_cut_exec2 (struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t len) |
static int | acf_sort_exec (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len) |
AST_MODULE_INFO_STANDARD (ASTERISK_GPL_KEY,"Cut out information from a string") | |
static int | cut_internal (struct ast_channel *chan, char *data, struct ast_str **buf, ssize_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_custom_function | acf_cut |
static struct ast_custom_function | acf_sort |
CUT function.
Definition in file func_cut.c.
#define ERROR_NOARG (-1) |
Definition at line 100 of file func_cut.c.
Referenced by acf_cut_exec(), acf_cut_exec2(), acf_sort_exec(), cut_internal(), and sort_internal().
#define ERROR_NOMEM (-2) |
Definition at line 101 of file func_cut.c.
Referenced by acf_cut_exec(), acf_cut_exec2(), and acf_sort_exec().
#define ERROR_USAGE (-3) |
Definition at line 102 of file func_cut.c.
Referenced by acf_cut_exec(), acf_cut_exec2(), and cut_internal().
static int acf_cut_exec | ( | struct ast_channel * | chan, | |
const char * | cmd, | |||
char * | data, | |||
char * | buf, | |||
size_t | len | |||
) | [static] |
Definition at line 258 of file func_cut.c.
References ast_copy_string(), ast_free, ast_log(), ast_str_buffer(), ast_str_create(), cut_internal(), ERROR_NOARG, ERROR_NOMEM, ERROR_USAGE, LOG_ERROR, and str.
00259 { 00260 int ret = -1; 00261 struct ast_str *str = ast_str_create(16); 00262 00263 switch (cut_internal(chan, data, &str, len)) { 00264 case ERROR_NOARG: 00265 ast_log(LOG_ERROR, "Syntax: CUT(<varname>,<char-delim>,<range-spec>) - missing argument!\n"); 00266 break; 00267 case ERROR_NOMEM: 00268 ast_log(LOG_ERROR, "Out of memory\n"); 00269 break; 00270 case ERROR_USAGE: 00271 ast_log(LOG_ERROR, "Usage: CUT(<varname>,<char-delim>,<range-spec>)\n"); 00272 break; 00273 case 0: 00274 ret = 0; 00275 ast_copy_string(buf, ast_str_buffer(str), len); 00276 break; 00277 default: 00278 ast_log(LOG_ERROR, "Unknown internal error\n"); 00279 } 00280 ast_free(str); 00281 return ret; 00282 }
static int acf_cut_exec2 | ( | struct ast_channel * | chan, | |
const char * | cmd, | |||
char * | data, | |||
struct ast_str ** | buf, | |||
ssize_t | len | |||
) | [static] |
Definition at line 284 of file func_cut.c.
References ast_log(), cut_internal(), ERROR_NOARG, ERROR_NOMEM, ERROR_USAGE, and LOG_ERROR.
00285 { 00286 int ret = -1; 00287 00288 switch (cut_internal(chan, data, buf, len)) { 00289 case ERROR_NOARG: 00290 ast_log(LOG_ERROR, "Syntax: CUT(<varname>,<char-delim>,<range-spec>) - missing argument!\n"); 00291 break; 00292 case ERROR_NOMEM: 00293 ast_log(LOG_ERROR, "Out of memory\n"); 00294 break; 00295 case ERROR_USAGE: 00296 ast_log(LOG_ERROR, "Usage: CUT(<varname>,<char-delim>,<range-spec>)\n"); 00297 break; 00298 case 0: 00299 ret = 0; 00300 break; 00301 default: 00302 ast_log(LOG_ERROR, "Unknown internal error\n"); 00303 } 00304 00305 return ret; 00306 }
static int acf_sort_exec | ( | struct ast_channel * | chan, | |
const char * | cmd, | |||
char * | data, | |||
char * | buf, | |||
size_t | len | |||
) | [static] |
Definition at line 237 of file func_cut.c.
References ast_log(), ERROR_NOARG, ERROR_NOMEM, LOG_ERROR, and sort_internal().
00238 { 00239 int ret = -1; 00240 00241 switch (sort_internal(chan, data, buf, len)) { 00242 case ERROR_NOARG: 00243 ast_log(LOG_ERROR, "SORT() requires an argument\n"); 00244 break; 00245 case ERROR_NOMEM: 00246 ast_log(LOG_ERROR, "Out of memory\n"); 00247 break; 00248 case 0: 00249 ret = 0; 00250 break; 00251 default: 00252 ast_log(LOG_ERROR, "Unknown internal error\n"); 00253 } 00254 00255 return ret; 00256 }
AST_MODULE_INFO_STANDARD | ( | ASTERISK_GPL_KEY | , | |
"Cut out information from a string" | ||||
) |
static int cut_internal | ( | struct ast_channel * | chan, | |
char * | data, | |||
struct ast_str ** | buf, | |||
ssize_t | buflen | |||
) | [static] |
Definition at line 155 of file func_cut.c.
References args, ast_alloca, AST_APP_ARG, ast_copy_string(), AST_DECLARE_APP_ARGS, ast_free, ast_get_encoded_char(), ast_log(), AST_STANDARD_APP_ARGS, ast_str_append(), ast_str_buffer(), ast_str_create(), ast_str_strlen(), ast_str_substitute_variables(), ast_strdupa, ERROR_NOARG, ERROR_USAGE, LOG_WARNING, and parse().
Referenced by acf_cut_exec(), and acf_cut_exec2().
00156 { 00157 char *parse, ds[2], *var_expr; 00158 size_t delim_consumed; 00159 struct ast_str *var_value; 00160 AST_DECLARE_APP_ARGS(args, 00161 AST_APP_ARG(varname); 00162 AST_APP_ARG(delimiter); 00163 AST_APP_ARG(field); 00164 ); 00165 00166 parse = ast_strdupa(data); 00167 00168 AST_STANDARD_APP_ARGS(args, parse); 00169 00170 /* Check arguments */ 00171 if (args.argc < 3) { 00172 return ERROR_NOARG; 00173 } 00174 var_expr = ast_alloca(strlen(args.varname) + 4); 00175 00176 /* Get the value of the variable named in the 1st argument */ 00177 snprintf(var_expr, strlen(args.varname) + 4, "${%s}", args.varname); 00178 var_value = ast_str_create(16); 00179 ast_str_substitute_variables(&var_value, 0, chan, var_expr); 00180 00181 /* Copy delimiter from 2nd argument to ds[] possibly decoding backslash escapes */ 00182 if (ast_get_encoded_char(args.delimiter, ds, &delim_consumed)) { 00183 ast_copy_string(ds, "-", sizeof(ds)); 00184 } 00185 ds[1] = '\0'; 00186 00187 if (ast_str_strlen(var_value)) { 00188 int curfieldnum = 1; 00189 char *curfieldptr = ast_str_buffer(var_value); 00190 int out_field_count = 0; 00191 00192 while (curfieldptr != NULL && args.field != NULL) { 00193 char *next_range = strsep(&(args.field), "&"); 00194 int start_field, stop_field; 00195 char trashchar; 00196 00197 if (sscanf(next_range, "%30d-%30d", &start_field, &stop_field) == 2) { 00198 /* range with both start and end */ 00199 } else if (sscanf(next_range, "-%30d", &stop_field) == 1) { 00200 /* range with end only */ 00201 start_field = 1; 00202 } else if ((sscanf(next_range, "%30d%1c", &start_field, &trashchar) == 2) && (trashchar == '-')) { 00203 /* range with start only */ 00204 stop_field = INT_MAX; 00205 } else if (sscanf(next_range, "%30d", &start_field) == 1) { 00206 /* single number */ 00207 stop_field = start_field; 00208 } else { 00209 /* invalid field spec */ 00210 ast_free(var_value); 00211 return ERROR_USAGE; 00212 } 00213 00214 /* Get to start, if not there already */ 00215 while (curfieldptr != NULL && curfieldnum < start_field) { 00216 strsep(&curfieldptr, ds); 00217 curfieldnum++; 00218 } 00219 00220 /* Most frequent problem is the expectation of reordering fields */ 00221 if (curfieldnum > start_field) { 00222 ast_log(LOG_WARNING, "We're already past the field you wanted?\n"); 00223 } 00224 00225 /* Output fields until we either run out of fields or stop_field is reached */ 00226 while (curfieldptr != NULL && curfieldnum <= stop_field) { 00227 char *field_value = strsep(&curfieldptr, ds); 00228 ast_str_append(buf, buflen, "%s%s", out_field_count++ ? ds : "", field_value); 00229 curfieldnum++; 00230 } 00231 } 00232 } 00233 ast_free(var_value); 00234 return 0; 00235 }
static int load_module | ( | void | ) | [static] |
Definition at line 329 of file func_cut.c.
References ast_custom_function_register.
00330 { 00331 int res = 0; 00332 00333 res |= ast_custom_function_register(&acf_cut); 00334 res |= ast_custom_function_register(&acf_sort); 00335 00336 return res; 00337 }
static int sort_internal | ( | struct ast_channel * | chan, | |
char * | data, | |||
char * | buffer, | |||
size_t | buflen | |||
) | [static] |
Definition at line 104 of file func_cut.c.
References ast_alloca, ast_strdupa, ERROR_NOARG, sortable_keys::key, sort_subroutine(), and value.
Referenced by acf_sort_exec().
00105 { 00106 char *strings, *ptrkey, *ptrvalue; 00107 int count=1, count2, element_count=0; 00108 struct sortable_keys *sortable_keys; 00109 00110 *buffer = '\0'; 00111 00112 if (!data) 00113 return ERROR_NOARG; 00114 00115 strings = ast_strdupa(data); 00116 00117 for (ptrkey = strings; *ptrkey; ptrkey++) { 00118 if (*ptrkey == ',') 00119 count++; 00120 } 00121 00122 sortable_keys = ast_alloca(count * sizeof(struct sortable_keys)); 00123 00124 memset(sortable_keys, 0, count * sizeof(struct sortable_keys)); 00125 00126 /* Parse each into a struct */ 00127 count2 = 0; 00128 while ((ptrkey = strsep(&strings, ","))) { 00129 ptrvalue = strchr(ptrkey, ':'); 00130 if (!ptrvalue) { 00131 count--; 00132 continue; 00133 } 00134 *ptrvalue++ = '\0'; 00135 sortable_keys[count2].key = ptrkey; 00136 sscanf(ptrvalue, "%30f", &sortable_keys[count2].value); 00137 count2++; 00138 } 00139 00140 /* Sort the structs */ 00141 qsort(sortable_keys, count, sizeof(struct sortable_keys), sort_subroutine); 00142 00143 for (count2 = 0; count2 < count; count2++) { 00144 int blen = strlen(buffer); 00145 if (element_count++) { 00146 strncat(buffer + blen, ",", buflen - blen - 1); 00147 blen++; 00148 } 00149 strncat(buffer + blen, sortable_keys[count2].key, buflen - blen - 1); 00150 } 00151 00152 return 0; 00153 }
static int sort_subroutine | ( | const void * | arg1, | |
const void * | arg2 | |||
) | [static] |
Definition at line 89 of file func_cut.c.
References sortable_keys::value.
Referenced by sort_internal().
00090 { 00091 const struct sortable_keys *one=arg1, *two=arg2; 00092 if (one->value < two->value) 00093 return -1; 00094 else if (one->value == two->value) 00095 return 0; 00096 else 00097 return 1; 00098 }
static int unload_module | ( | void | ) | [static] |
Definition at line 319 of file func_cut.c.
References ast_custom_function_unregister().
00320 { 00321 int res = 0; 00322 00323 res |= ast_custom_function_unregister(&acf_cut); 00324 res |= ast_custom_function_unregister(&acf_sort); 00325 00326 return res; 00327 }
struct ast_custom_function acf_cut [static] |
{ .name = "CUT", .read = acf_cut_exec, .read2 = acf_cut_exec2, }
Definition at line 313 of file func_cut.c.
struct ast_custom_function acf_sort [static] |
{ .name = "SORT", .read = acf_sort_exec, }
Definition at line 308 of file func_cut.c.