add experimental code for new-style "say" application.

The rules for spelling out numbers and dates are in the config
file "say.conf", which can be edited to implement national
or even local language rules.

The new code can be enabled through the cli command
'say load new'
while the old code can be restored with
'say load old'

Eventually, this code should go to a better place,
but for the time being we keep here as it provides
very similar functions.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@21421 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_playback.c

@@ -44,6 +44,10 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 #include "asterisk/options.h"
 #include "asterisk/app.h"
 
+#include "asterisk/cli.h"
+#include "asterisk/localtime.h"
+#include "asterisk/say.h"
+
 static char *tdesc = "Sound File Playback Application";
 
 static char *app = "Playback";
@@ -68,12 +72,322 @@ static char *descrip =
 
 LOCAL_USER_DECL;
 
+static struct ast_config *say_cfg;
+/* save the say' api calls.
+ * The first entry is NULL if we have the standard source,
+ * otherwise we are sourcing from here.
+ * 'say load [new|old]' will enable the new or old method, or report status
+ */
+static const void * say_api_buf[40];
+static const char *say_old = "old";
+static const char *say_new = "new";
+
+static void save_say_mode(const void *arg)
+{
+	int i = 0;
+	say_api_buf[i++] = arg;
+
+        say_api_buf[i++] = ast_say_number_full;
+        say_api_buf[i++] = ast_say_enumeration_full;
+        say_api_buf[i++] = ast_say_digit_str_full;
+        say_api_buf[i++] = ast_say_character_str_full;
+        say_api_buf[i++] = ast_say_phonetic_str_full;
+        say_api_buf[i++] = ast_say_datetime;
+        say_api_buf[i++] = ast_say_time;
+        say_api_buf[i++] = ast_say_date;
+        say_api_buf[i++] = ast_say_datetime_from_now;
+        say_api_buf[i++] = ast_say_date_with_format;
+}
+
+static void restore_say_mode(void *arg)
+{
+	int i = 0;
+	say_api_buf[i++] = arg;
+
+        ast_say_number_full = say_api_buf[i++];
+        ast_say_enumeration_full = say_api_buf[i++];
+        ast_say_digit_str_full = say_api_buf[i++];
+        ast_say_character_str_full = say_api_buf[i++];
+        ast_say_phonetic_str_full = say_api_buf[i++];
+        ast_say_datetime = say_api_buf[i++];
+        ast_say_time = say_api_buf[i++];
+        ast_say_date = say_api_buf[i++];
+        ast_say_datetime_from_now = say_api_buf[i++];
+        ast_say_date_with_format = say_api_buf[i++];
+}
+
+/* 
+ * Typical 'say' arguments in addition to the date or number or string
+ * to say. We do not include 'options' because they may be different
+ * in recursive calls, and so they are better left as an external
+ * parameter.
+ */
+typedef struct {
+        struct ast_channel *chan;
+        const char *ints;
+        const char *language;
+        int audiofd;
+        int ctrlfd;
+} say_args_t;
+
+static int s_streamwait3(const say_args_t *a, const char *fn)
+{
+        int res = ast_streamfile(a->chan, fn, a->language);
+        if (res) {
+                ast_log(LOG_WARNING, "Unable to play message %s\n", fn);
+                return res;
+        }
+        res = (a->audiofd  > -1 && a->ctrlfd > -1) ?
+                ast_waitstream_full(a->chan, a->ints, a->audiofd, a->ctrlfd) :
+                ast_waitstream(a->chan, a->ints);
+        ast_stopstream(a->chan);
+        return res;  
+}
+
+/*
+ * the string is 'prefix:data' or prefix:fmt:data'
+ * with ':' being invalid in strings.
+ */
+static int do_say(say_args_t *a, const char *s, const char *options, int depth)
+{
+	struct ast_variable *v;
+	char *lang, *x, *rule = NULL;
+	int ret = 0;   
+	struct varshead head = { .first = NULL, .last = NULL };
+	struct ast_var_t *n;
+
+	ast_log(LOG_WARNING, "string <%s> depth <%d>\n", s, depth);
+	if (depth++ > 10) {
+		ast_log(LOG_WARNING, "recursion too deep, exiting\n");
+		return -1;
+	}
+
+	/* scan languages same as in file.c */
+	if (a->language == NULL)
+		a->language = "en";     /* default */
+	ast_log(LOG_WARNING, "try <%s> in <%s>\n", s, a->language);
+	lang = ast_strdupa(a->language);
+	if (!lang)      /* no memory! */
+		return -1;
+	for (;;) {
+		for (v = ast_variable_browse(say_cfg, lang); v ; v = v->next) {
+			if (ast_extension_match(v->name, s)) {
+				rule = ast_strdupa(v->value);
+				break;
+			}
+		}
+		if (rule)
+			break;
+		if ( (x = strchr(lang, '_')) )
+			*x = '\0';      /* try without suffix */
+		else if (strcmp(lang, "en"))
+			lang = "en";    /* last resort, try 'en' if not done yet */
+		else
+			break;
+	}
+	if (!rule)
+		return 0;
+
+	/* skip up to two prefixes to get the value */
+	if ( (x = strchr(s, ':')) )
+		s = x + 1;
+	if ( (x = strchr(s, ':')) )
+		s = x + 1;
+	ast_log(LOG_WARNING, "value is <%s>\n", s);
+	n = ast_var_assign("SAY", s);
+	AST_LIST_INSERT_HEAD(&head, n, entries);
+
+	/* scan the body, one piece at a time */
+	while ( ret <= 0 && (x = strsep(&rule, ",")) ) { /* exit on key */
+		char fn[128];
+		const char *p, *fmt, *data; /* format and data pointers */
+
+		/* prepare a decent file name */
+		x = ast_skip_blanks(x);
+		ast_trim_blanks(x);
+
+		/* replace variables */
+		memset(fn, 0, sizeof(fn)); /* XXX why isn't done in pbx_substitute_variables_helper! */
+		pbx_substitute_variables_varshead(&head, x, fn, sizeof(fn));
+		ast_log(LOG_WARNING, "doing [%s]\n", fn);
+
+		/* locate prefix and data, if any */
+		fmt = index(fn, ':');
+		if (!fmt || fmt == fn)	{	/* regular filename */
+			ret = s_streamwait3(a, fn);
+			continue;
+		}
+		fmt++;
+		data = index(fmt, ':');	/* colon before data */
+		if (!data || data == fmt) {	/* simple prefix-fmt */
+			ret = do_say(a, fn, options, depth);
+			continue;
+		}
+		/* prefix:fmt:data */
+		for (p = fmt; p < data && ret <= 0; p++) {
+			char fn2[128];
+			if (*p == ' ' || *p == '\t')	/* skip blanks */
+				continue;
+			if (*p == '\'') {/* file name - we trim them */
+				char *y;
+				strcpy(fn2, ast_skip_blanks(p+1));	/* make a full copy */
+				y = index(fn2, '\'');
+				if (!y) {
+					p = data;	/* invalid. prepare to end */
+					break;
+				}
+				*y = '\0';
+				ast_trim_blanks(fn2);
+				p = index(p+1, '\'');
+				ret = s_streamwait3(a, fn2);
+			} else {
+				int l = fmt-fn;
+				strcpy(fn2, fn); /* copy everything */
+				/* after prefix, append the format */
+				fn2[l++] = *p;
+				strcpy(fn2 + l, data);
+				ret = do_say(a, fn2, options, depth);
+			}
+		}
+	}
+	ast_var_delete(n);
+	return ret;
+}
+
+static int say_full(struct ast_channel *chan, const char *string,
+        const char *ints, const char *lang, const char *options,
+        int audiofd, int ctrlfd)
+{
+        say_args_t a = { chan, ints, lang, audiofd, ctrlfd };
+  
+        if (!say_cfg) {
+                ast_log(LOG_WARNING, "no say.conf, cannot spell '%s'\n", string);
+                return -1;   
+        }
+        return do_say(&a, string, options, 0);
+}
+
+static int say_number_full(struct ast_channel *chan, int num,
+	const char *ints, const char *lang, const char *options,
+	int audiofd, int ctrlfd)
+{
+	char buf[64];
+        say_args_t a = { chan, ints, lang, audiofd, ctrlfd };
+	snprintf(buf, sizeof(buf), "num:%d", num);
+        return do_say(&a, buf, options, 0);
+}
+
+static int say_enumeration_full(struct ast_channel *chan, int num,
+	const char *ints, const char *lang, const char *options,
+	int audiofd, int ctrlfd)
+{
+	char buf[64];
+        say_args_t a = { chan, ints, lang, audiofd, ctrlfd };
+	snprintf(buf, sizeof(buf), "enum:%d", num);
+        return do_say(&a, buf, options, 0);
+}
+
+static int say_date_generic(struct ast_channel *chan, time_t t,
+	const char *ints, const char *lang, const char *format, const char *timezone, const char *prefix)
+{
+	char buf[128];
+	struct tm tm;
+        say_args_t a = { chan, ints, lang, -1, -1 };
+	if (format == NULL)
+		format = "";
+
+	ast_localtime(&t, &tm, NULL);
+	snprintf(buf, sizeof(buf), "%s:%s:%04d%02d%02d%02d%02d.%02d-%d-%3d",
+		prefix,
+		format,
+		tm.tm_year+1900,
+		tm.tm_mon+1,
+		tm.tm_mday,
+		tm.tm_hour,
+		tm.tm_min,
+		tm.tm_sec,
+		tm.tm_wday,
+		tm.tm_yday);
+        return do_say(&a, buf, NULL, 0);
+}
+
+static int say_date_with_format(struct ast_channel *chan, time_t t,
+	const char *ints, const char *lang, const char *format, const char *timezone)
+{
+	return say_date_generic(chan, t, ints, lang, format, timezone, "datetime");
+}
+
+static int say_date(struct ast_channel *chan, time_t t, const char *ints, const char *lang)
+{
+	return say_date_generic(chan, t, ints, lang, "", NULL, "date");
+}
+
+static int say_time(struct ast_channel *chan, time_t t, const char *ints, const char *lang)
+{
+	return say_date_generic(chan, t, ints, lang, "", NULL, "time");
+}
+
+static int say_datetime(struct ast_channel *chan, time_t t, const char *ints, const char *lang)
+{
+	return say_date_generic(chan, t, ints, lang, "", NULL, "datetime");
+}
+
+/*
+ * remap the 'say' functions to use those in this file
+ */
+static int __say_init(int fd, int argc, char *argv[])
+{
+	const char *old_mode = say_api_buf[0] ? say_new : say_old;
+	char *mode;
+
+	if (argc == 2) {
+		ast_cli(fd, "say mode is [%s]\n", old_mode);
+		return RESULT_SUCCESS;
+        } else if (argc != 3)
+                return RESULT_SHOWUSAGE;
+        mode = argv[2];
+
+	ast_log(LOG_WARNING, "init say.c from %s to %s", old_mode, mode);
+
+	if (!strcmp(mode, old_mode)) {
+		ast_log(LOG_WARNING, "say mode is %s already\n", mode);
+	} else if (!strcmp(mode, say_new)) {
+		if (say_cfg == NULL)
+			say_cfg = ast_config_load("say.conf");
+		save_say_mode(say_new);
+		ast_say_number_full = say_number_full;
+
+		ast_say_enumeration_full = say_enumeration_full;
+#if 0
+		ast_say_digits_full = say_digits_full;
+		ast_say_digit_str_full = say_digit_str_full;
+		ast_say_character_str_full = say_character_str_full;
+		ast_say_phonetic_str_full = say_phonetic_str_full;
+		ast_say_datetime_from_now = say_datetime_from_now;
+#endif
+		ast_say_datetime = say_datetime;
+		ast_say_time = say_time;
+		ast_say_date = say_date;
+		ast_say_date_with_format = say_date_with_format;
+	} else if (!strcmp(mode, say_old) && say_api_buf[0] == say_new) {
+		restore_say_mode(NULL);
+	} else {
+		ast_log(LOG_WARNING, "unrecognized mode %s\n", mode);
+	}
+	return RESULT_SUCCESS;
+}
+
+static struct ast_cli_entry myclis[] = {
+        { { "say", "load", NULL }, __say_init, "set/show the say mode", "say load new|old" },
+};
+
 static int playback_exec(struct ast_channel *chan, void *data)
 {
 	int res = 0;
 	struct localuser *u;
 	char *tmp;
 	int option_skip=0;
+	int option_say=0;
 	int option_noanswer = 0;
 	int priority_jump = 0;
 
@@ -96,6 +410,8 @@ static int playback_exec(struct ast_channel *chan, void *data)
 	if (args.options) {
 		if (strcasestr(args.options, "skip"))
 			option_skip = 1;
+		if (strcasestr(args.options, "say"))
+			option_say = 1;
 		if (strcasestr(args.options, "noanswer"))
 			option_noanswer = 1;
 		if (strchr(args.options, 'j'))
@@ -105,8 +421,7 @@ static int playback_exec(struct ast_channel *chan, void *data)
 	if (chan->_state != AST_STATE_UP) {
 		if (option_skip) {
 			/* At the user's option, skip if the line is not up */
-			LOCAL_USER_REMOVE(u);
-			return 0;
+			goto done;
 		} else if (!option_noanswer)
 			/* Otherwise answer unless we're supposed to send this while on-hook */
 			res = ast_answer(chan);
@@ -117,7 +432,10 @@ static int playback_exec(struct ast_channel *chan, void *data)
 
 		ast_stopstream(chan);
 		while (!res && (front = strsep(&tmp, "&"))) {
-			res = ast_streamfile(chan, front, chan->language);
+			if (option_say)
+				res = say_full(chan, front, "", chan->language, NULL, -1, -1);
+			else
+				res = ast_streamfile(chan, front, chan->language);
 			if (!res) { 
 				res = ast_waitstream(chan, "");	
 				ast_stopstream(chan);
@@ -131,6 +449,7 @@ static int playback_exec(struct ast_channel *chan, void *data)
 		}
 		pbx_builtin_setvar_helper(chan, "PLAYBACKSTATUS", mres ? "FAILED" : "SUCCESS");
 	}
+done:
 	LOCAL_USER_REMOVE(u);
 	return res;
 }
@@ -148,6 +467,7 @@ static int unload_module(void *mod)
 
 static int load_module(void *mod)
 {
+        ast_cli_register_multiple(myclis, sizeof(myclis)/sizeof(struct ast_cli_entry));
 	return ast_register_application(app, playback_exec, synopsis, descrip);
 }