diff options
author | file <file@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-05-18 00:00:32 +0000 |
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committer | file <file@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-05-18 00:00:32 +0000 |
commit | 03d241f35c0fbad963ac954e3823ee013a801436 (patch) | |
tree | afcc35c807bd49d7a507dc470776eab1a1ed6483 /funcs | |
parent | 916fa20bc1950f867eb150d8b1242e4863c2306c (diff) |
Add SPRINTF dialplan function made by the ever insaneful Corydon (issue #7078 reported by Corydon76)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@28016 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'funcs')
-rw-r--r-- | funcs/func_strings.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/funcs/func_strings.c b/funcs/func_strings.c index 7445b64a5..16c9962c7 100644 --- a/funcs/func_strings.c +++ b/funcs/func_strings.c @@ -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; } |