String manipulation dialplan functions. More...
#include "asterisk.h"
#include <ctype.h>
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
Go to the source code of this file.
Defines | |
#define | SPRINTF_CONVERSION 4 |
#define | SPRINTF_FLAG 0 |
#define | SPRINTF_LENGTH 3 |
#define | SPRINTF_PRECISION 2 |
#define | SPRINTF_WIDTH 1 |
Functions | |
static int | acf_sprintf (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len) |
AST_MODULE_INFO_STANDARD (ASTERISK_GPL_KEY,"SPRINTF dialplan function") | |
AST_THREADSTORAGE (result_buf) | |
static int | load_module (void) |
static int | unload_module (void) |
Variables | |
static struct ast_custom_function | sprintf_function |
String manipulation dialplan functions.
Definition in file func_sprintf.c.
#define SPRINTF_CONVERSION 4 |
Referenced by acf_sprintf().
#define SPRINTF_FLAG 0 |
Referenced by acf_sprintf().
#define SPRINTF_LENGTH 3 |
Referenced by acf_sprintf().
#define SPRINTF_PRECISION 2 |
Referenced by acf_sprintf().
#define SPRINTF_WIDTH 1 |
Referenced by acf_sprintf().
static int acf_sprintf | ( | struct ast_channel * | chan, | |
const char * | cmd, | |||
char * | data, | |||
char * | buf, | |||
size_t | len | |||
) | [static] |
Definition at line 67 of file func_sprintf.c.
References AST_APP_ARG, ast_copy_string(), AST_DECLARE_APP_ARGS, ast_log(), AST_STANDARD_APP_ARGS, format, LOG_ERROR, SPRINTF_CONVERSION, SPRINTF_FLAG, SPRINTF_LENGTH, SPRINTF_PRECISION, SPRINTF_WIDTH, and var.
00068 { 00069 #define SPRINTF_FLAG 0 00070 #define SPRINTF_WIDTH 1 00071 #define SPRINTF_PRECISION 2 00072 #define SPRINTF_LENGTH 3 00073 #define SPRINTF_CONVERSION 4 00074 int i, state = -1, argcount = 0; 00075 char *formatstart = NULL, *bufptr = buf; 00076 char formatbuf[256] = ""; 00077 int tmpi; 00078 double tmpd; 00079 AST_DECLARE_APP_ARGS(arg, 00080 AST_APP_ARG(format); 00081 AST_APP_ARG(var)[100]; 00082 ); 00083 00084 AST_STANDARD_APP_ARGS(arg, data); 00085 00086 /* Scan the format, converting each argument into the requisite format type. */ 00087 for (i = 0; arg.format[i]; i++) { 00088 switch (state) { 00089 case SPRINTF_FLAG: 00090 if (strchr("#0- +'I", arg.format[i])) 00091 break; 00092 state = SPRINTF_WIDTH; 00093 case SPRINTF_WIDTH: 00094 if (arg.format[i] >= '0' && arg.format[i] <= '9') 00095 break; 00096 00097 /* Next character must be a period to go into a precision */ 00098 if (arg.format[i] == '.') { 00099 state = SPRINTF_PRECISION; 00100 } else { 00101 state = SPRINTF_LENGTH; 00102 i--; 00103 } 00104 break; 00105 case SPRINTF_PRECISION: 00106 if (arg.format[i] >= '0' && arg.format[i] <= '9') 00107 break; 00108 state = SPRINTF_LENGTH; 00109 case SPRINTF_LENGTH: 00110 if (strchr("hl", arg.format[i])) { 00111 if (arg.format[i + 1] == arg.format[i]) 00112 i++; 00113 state = SPRINTF_CONVERSION; 00114 break; 00115 } else if (strchr("Lqjzt", arg.format[i])) { 00116 state = SPRINTF_CONVERSION; 00117 break; 00118 } 00119 state = SPRINTF_CONVERSION; 00120 case SPRINTF_CONVERSION: 00121 if (strchr("diouxXc", arg.format[i])) { 00122 /* Integer */ 00123 00124 /* Isolate this format alone */ 00125 ast_copy_string(formatbuf, formatstart, sizeof(formatbuf)); 00126 formatbuf[&arg.format[i] - formatstart + 1] = '\0'; 00127 00128 /* Convert the argument into the required type */ 00129 if (arg.var[argcount]) { 00130 if (sscanf(arg.var[argcount++], "%30d", &tmpi) != 1) { 00131 ast_log(LOG_ERROR, "Argument '%s' is not an integer number for format '%s'\n", arg.var[argcount - 1], formatbuf); 00132 goto sprintf_fail; 00133 } 00134 } else { 00135 ast_log(LOG_ERROR, "SPRINTF() has more format specifiers than arguments!\n"); 00136 goto sprintf_fail; 00137 } 00138 00139 /* Format the argument */ 00140 snprintf(bufptr, buf + len - bufptr, formatbuf, tmpi); 00141 00142 /* Update the position of the next parameter to print */ 00143 bufptr = strchr(buf, '\0'); 00144 } else if (strchr("eEfFgGaA", arg.format[i])) { 00145 /* Double */ 00146 00147 /* Isolate this format alone */ 00148 ast_copy_string(formatbuf, formatstart, sizeof(formatbuf)); 00149 formatbuf[&arg.format[i] - formatstart + 1] = '\0'; 00150 00151 /* Convert the argument into the required type */ 00152 if (arg.var[argcount]) { 00153 if (sscanf(arg.var[argcount++], "%30lf", &tmpd) != 1) { 00154 ast_log(LOG_ERROR, "Argument '%s' is not a floating point number for format '%s'\n", arg.var[argcount - 1], formatbuf); 00155 goto sprintf_fail; 00156 } 00157 } else { 00158 ast_log(LOG_ERROR, "SPRINTF() has more format specifiers than arguments!\n"); 00159 goto sprintf_fail; 00160 } 00161 00162 /* Format the argument */ 00163 snprintf(bufptr, buf + len - bufptr, formatbuf, tmpd); 00164 00165 /* Update the position of the next parameter to print */ 00166 bufptr = strchr(buf, '\0'); 00167 } else if (arg.format[i] == 's') { 00168 /* String */ 00169 00170 /* Isolate this format alone */ 00171 ast_copy_string(formatbuf, formatstart, sizeof(formatbuf)); 00172 formatbuf[&arg.format[i] - formatstart + 1] = '\0'; 00173 00174 /* Format the argument */ 00175 snprintf(bufptr, buf + len - bufptr, formatbuf, arg.var[argcount++]); 00176 00177 /* Update the position of the next parameter to print */ 00178 bufptr = strchr(buf, '\0'); 00179 } else if (arg.format[i] == '%') { 00180 /* Literal data to copy */ 00181 *bufptr++ = arg.format[i]; 00182 } else { 00183 /* Not supported */ 00184 00185 /* Isolate this format alone */ 00186 ast_copy_string(formatbuf, formatstart, sizeof(formatbuf)); 00187 formatbuf[&arg.format[i] - formatstart + 1] = '\0'; 00188 00189 ast_log(LOG_ERROR, "Format type not supported: '%s' with argument '%s'\n", formatbuf, arg.var[argcount++]); 00190 goto sprintf_fail; 00191 } 00192 state = -1; 00193 break; 00194 default: 00195 if (arg.format[i] == '%') { 00196 state = SPRINTF_FLAG; 00197 formatstart = &arg.format[i]; 00198 break; 00199 } else { 00200 /* Literal data to copy */ 00201 *bufptr++ = arg.format[i]; 00202 } 00203 } 00204 } 00205 *bufptr = '\0'; 00206 return 0; 00207 sprintf_fail: 00208 return -1; 00209 }
AST_MODULE_INFO_STANDARD | ( | ASTERISK_GPL_KEY | , | |
"SPRINTF dialplan function" | ||||
) |
AST_THREADSTORAGE | ( | result_buf | ) |
static int load_module | ( | void | ) | [static] |
Definition at line 225 of file func_sprintf.c.
References ast_custom_function_register.
00226 { 00227 int res = 0; 00228 00229 res |= ast_custom_function_register(&sprintf_function); 00230 00231 return res; 00232 }
static int unload_module | ( | void | ) | [static] |
Definition at line 216 of file func_sprintf.c.
References ast_custom_function_unregister().
00217 { 00218 int res = 0; 00219 00220 res |= ast_custom_function_unregister(&sprintf_function); 00221 00222 return res; 00223 }
struct ast_custom_function sprintf_function [static] |
{ .name = "SPRINTF", .read = acf_sprintf, }
Definition at line 211 of file func_sprintf.c.