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--- cookbooks:devel:transformations [2019/01/09 10:11]
ycaner Json : add json.parse transformation.
+++ cookbooks:devel:transformations [2020/01/28 10:54]
miconda [{s.rm,match}]
@@ Line 1: / Line 1: @@
-====== Kamailio SIP Server v5.3.x (devel): Transformations ======
+====== Kamailio SIP Server v5.4.x (devel): Transformations ======
 <code>
@@ Line 153: / Line 153: @@
 Decode base64 encoded PV and return value
+==== {s.encode.base64t} ====
+Return base64 encoding of PV value without trailing padding characters('=').
+==== {s.decode.base64t} ====
+Decode base64 encoded PV, handling missing trailing padding characters, and return value.
 ==== {s.escape.common} ====
@@ Line 308: / Line 314: @@
 </code>
+==== {s.rmws} ====
+Remove occurrences of whitespace characters (' ', '\t, '\r', '\n').
+<code c>
+$(var(x){s.rmws})
+</code>
 ==== {s.corehash,n} ====
@@ Line 335: / Line 348: @@
 $var(uri) = $(var(x){s.unbracket});
 </code>
+==== {s.count,c} ====
+Count how many times c appears in the pv value.
+<code c>
+abababa"{s.count,a}
+# will return 4
+</code>
 ===== URI Transformations =====
@@ Line 416: / Line 440: @@
 The name of the transformation starts with 'param.'. The PV value is considered to be a string like name1=value1;name2=value2;...". The transformations returns the value for a specific parameter, or the name of a parameter at a specific index.
-Available transformations in this class:
+Available transformations in this class are presented in the next sections.
+**Important Note:** the delimiter cannot be comma (,), because this transformation is using SIP header/URI parameters parser and the comma is a delimiter between serialized SIP header/URI bodies. The workaround is to use the subst transformation to replace the comma with another character that is used then as separator.

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