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Add support for sprintf() formatting to tutorial

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<message> tags can now contain sprintf() format
strings (%d, %.2f etc), with

<message-param>
  <property>/some/prop</property>
</message-param>

used as the substitute value.  Could be extended
in the future with perhaps Nasal evaluation?
This commit is contained in:
Stuart Buchanan 2017-03-28 21:38:34 +01:00
parent 60c6e73258
commit 6f2ccdd395
2 changed files with 18 additions and 2 deletions
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6
Docs/README.tutorials
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@ -84,6 +84,10 @@ in detail below:
<step> is entered; allowed multiple times, in
which case one is chosen at random
<message-param> optional; allowed up to 4 times.
<property>...</property> property to substitute into the <message> string
</message-param> using sprintf() formatting. E.g. %d, %.2f
<audio>...</audio> optional; file name of *.wav sample to be played;
may be used multiple times (random)
<set>
@ -473,5 +477,3 @@ terminal, for example:
</marker>
This just needs to be copied to the tutorial XML file.

14
Nasal/tutorial/tutorial.nas
View file

@ -414,6 +414,20 @@ var say_message = func(node, default = nil) {
}
if (msg != nil) {
var params = [];
foreach (var p; node.getChildren("message-param")) {
if (p.getNode("property") != nil) {
append(params, getprop(p.getNode("property").getValue()));
}
}
# Ugly
if (size(params) == 1) { msg = sprintf(msg, params[0]); }
if (size(params) == 2) { msg = sprintf(msg, params[0], params[1]); }
if (size(params) == 3) { msg = sprintf(msg, params[0], params[1], params[2]); }
if (size(params) == 4) { msg = sprintf(msg, params[0], params[1], params[2], params[3]); }
display.write(msg, 1, 1, 1);
if (audio == nil) {
# Link to text-to-speech