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Add SPRINTF dialplan function made by the ever insaneful Corydon (issue #7078 reported by Corydon76)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@28016 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp
2006-05-18 00:00:32 +00:00
parent 4edfd20a7a
commit e08dc08ae2
1 changed files with 145 additions and 0 deletions
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145
funcs/func_strings.c
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@@ -204,6 +204,149 @@ static struct ast_custom_function array_function = {
"entire argument, since Set can take multiple arguments itself.\n",
};
static int acf_sprintf(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
{
#define SPRINTF_FLAG 0
#define SPRINTF_WIDTH 1
#define SPRINTF_PRECISION 2
#define SPRINTF_LENGTH 3
#define SPRINTF_CONVERSION 4
int i, state = -1, argcount = 0;
char *formatstart = NULL, *bufptr = buf;
char formatbuf[256] = "";
int tmpi;
double tmpd;
AST_DECLARE_APP_ARGS(arg,
AST_APP_ARG(format);
AST_APP_ARG(var)[100];
);
AST_STANDARD_APP_ARGS(arg, data);
/* Scan the format, converting each argument into the requisite format type. */
for (i = 0; arg.format[i]; i++) {
switch (state) {
case SPRINTF_FLAG:
if (strchr("#0- +'I", arg.format[i]))
break;
state = SPRINTF_WIDTH;
case SPRINTF_WIDTH:
if (arg.format[i] >= '0' && arg.format[i] <= '9')
break;
/* Next character must be a period to go into a precision */
if (arg.format[i] == '.') {
state = SPRINTF_PRECISION;
} else {
state = SPRINTF_LENGTH;
i--;
}
break;
case SPRINTF_PRECISION:
if (arg.format[i] >= '0' && arg.format[i] <= '9')
break;
state = SPRINTF_LENGTH;
case SPRINTF_LENGTH:
if (strchr("hl", arg.format[i])) {
if (arg.format[i + 1] == arg.format[i])
i++;
state = SPRINTF_CONVERSION;
break;
} else if (strchr("Lqjzt", arg.format[i]))
state = SPRINTF_CONVERSION;
break;
state = SPRINTF_CONVERSION;
case SPRINTF_CONVERSION:
if (strchr("diouxXc", arg.format[i])) {
/* Integer */
/* Isolate this format alone */
ast_copy_string(formatbuf, formatstart, sizeof(formatbuf));
formatbuf[&arg.format[i] - formatstart + 1] = '\0';
/* Convert the argument into the required type */
if (sscanf(arg.var[argcount++], "%i", &tmpi) != 1) {
ast_log(LOG_ERROR, "Argument '%s' is not an integer number for format '%s'\n", arg.var[argcount - 1], formatbuf);
goto sprintf_fail;
}
/* Format the argument */
snprintf(bufptr, buf + len - bufptr, formatbuf, tmpi);
/* Update the position of the next parameter to print */
bufptr = strchr(buf, '\0');
} else if (strchr("eEfFgGaA", arg.format[i])) {
/* Double */
/* Isolate this format alone */
ast_copy_string(formatbuf, formatstart, sizeof(formatbuf));
formatbuf[&arg.format[i] - formatstart + 1] = '\0';
/* Convert the argument into the required type */
if (sscanf(arg.var[argcount++], "%lf", &tmpd) != 1) {
ast_log(LOG_ERROR, "Argument '%s' is not a floating point number for format '%s'\n", arg.var[argcount - 1], formatbuf);
goto sprintf_fail;
}
/* Format the argument */
snprintf(bufptr, buf + len - bufptr, formatbuf, tmpd);
/* Update the position of the next parameter to print */
bufptr = strchr(buf, '\0');
} else if (arg.format[i] == 's') {
/* String */
/* Isolate this format alone */
ast_copy_string(formatbuf, formatstart, sizeof(formatbuf));
formatbuf[&arg.format[i] - formatstart + 1] = '\0';
/* Format the argument */
snprintf(bufptr, buf + len - bufptr, formatbuf, arg.var[argcount++]);
/* Update the position of the next parameter to print */
bufptr = strchr(buf, '\0');
} else if (arg.format[i] == '%') {
/* Literal data to copy */
*bufptr++ = arg.format[i];
} else {
/* Not supported */
/* Isolate this format alone */
ast_copy_string(formatbuf, formatstart, sizeof(formatbuf));
formatbuf[&arg.format[i] - formatstart + 1] = '\0';
ast_log(LOG_ERROR, "Format type not supported: '%s' with argument '%s'\n", formatbuf, arg.var[argcount++]);
goto sprintf_fail;
}
state = -1;
break;
default:
if (arg.format[i] == '%') {
state = SPRINTF_FLAG;
formatstart = &arg.format[i];
break;
} else {
/* Literal data to copy */
*bufptr++ = arg.format[i];
}
}
}
return 0;
sprintf_fail:
return -1;
}
static struct ast_custom_function sprintf_function = {
.name = "SPRINTF",
.synopsis = "Format a variable according to a format string",
.syntax = "SPRINTF(<format>,<arg1>[,...<argN>])",
.read = acf_sprintf,
.desc =
"Parses the format string specified and returns a string matching that format.\n"
"Supports most options supported by sprintf(3). Returns a shortened string if\n"
"a format specifier is not recognized.\n",
};
static int quote(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len)
{
char *bufptr = buf, *dataptr = data;
@@ -438,6 +581,7 @@ static int unload_module(void *mod)
res |= ast_custom_function_unregister(&strptime_function);
res |= ast_custom_function_unregister(&eval_function);
res |= ast_custom_function_unregister(&keypadhash_function);
res |= ast_custom_function_unregister(&sprintf_function);
return res;
}
@@ -456,6 +600,7 @@ static int load_module(void *mod)
res |= ast_custom_function_register(&strptime_function);
res |= ast_custom_function_register(&eval_function);
res |= ast_custom_function_register(&keypadhash_function);
res |= ast_custom_function_register(&sprintf_function);
return res;
}