openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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<class name = "zstr" state = "stable">
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sending and receiving strings
<method name = "recv" singleton = "1">
Receive C string from socket. Caller must free returned string using
zstr_free(). Returns NULL if the context is being terminated or the
process was interrupted.
<argument name = "source" type = "sockish" />
<return type = "string" fresh = "1" />
</method>
<method name = "recvx" singleton = "1">
Receive a series of strings (until NULL) from multipart data.
Each string is allocated and filled with string data; if there
are not enough frames, unallocated strings are set to NULL.
Returns -1 if the message could not be read, else returns the
number of strings filled, zero or more. Free each returned string
using zstr_free(). If not enough strings are provided, remaining
multipart frames in the message are dropped.
<argument name = "source" type = "sockish" />
<argument name = "string_p" type = "string" by_reference = "1" variadic = "1" />
<return type = "integer" />
</method>
<method name = "send" singleton = "1">
Send a C string to a socket, as a frame. The string is sent without
trailing null byte; to read this you can use zstr_recv, or a similar
method that adds a null terminator on the received string. String
may be NULL, which is sent as "".
<argument name = "dest" type = "sockish" />
<argument name = "string" type = "string" />
<return type = "integer" />
</method>
<method name = "sendm" singleton = "1">
Send a C string to a socket, as zstr_send(), with a MORE flag, so that
you can send further strings in the same multi-part message.
<argument name = "dest" type = "sockish" />
<argument name = "string" type = "string" />
<return type = "integer" />
</method>
<method name = "sendf" singleton = "1">
Send a formatted string to a socket. Note that you should NOT use
user-supplied strings in the format (they may contain '%' which
will create security holes).
<argument name = "dest" type = "sockish" />
<argument name = "format" type = "format" />
<return type = "integer" />
</method>
<method name = "sendfm" singleton = "1">
Send a formatted string to a socket, as for zstr_sendf(), with a
MORE flag, so that you can send further strings in the same multi-part
message.
<argument name = "dest" type = "sockish" />
<argument name = "format" type = "format" />
<return type = "integer" />
</method>
<method name = "sendx" singleton = "1">
Send a series of strings (until NULL) as multipart data
Returns 0 if the strings could be sent OK, or -1 on error.
<argument name = "dest" type = "sockish" />
<argument name = "string" type = "string" variadic = "1" />
<return type = "integer" />
</method>
<method name = "str" singleton = "1" state = "draft" >
Accepts a void pointer and returns a fresh character string. If source
is null, returns an empty string.
<argument name = "source" type = "sockish" />
<return type = "string" fresh = "1" />
</method>
<method name = "free" singleton = "1">
Free a provided string, and nullify the parent pointer. Safe to call on
a null pointer.
<argument name = "string_p" type = "string" by_reference = "1" />
</method>
</class>