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bindings: wrap sr_input_scan_file() in the C++ language binding 

Allow C++ applications to have the input format automatically detected,
and get a corresponding InputFormat instance. This makes the format match
logic available to PulseView.
This commit is contained in:
Gerhard Sittig 2018-05-13 08:56:09 +02:00 committed by Uwe Hermann
parent c83bdde9da
commit 092843eb42
2 changed files with 28 additions and 0 deletions
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26
bindings/cxx/classes.cpp
View File

@ -177,6 +177,32 @@ map<string, shared_ptr<InputFormat>> Context::input_formats()
return result;
}
shared_ptr<InputFormat> Context::input_format_match(string filename)
{
const struct sr_input *input;
const struct sr_input_module *imod;
int rc;
/*
* Have the input module looked up for the specified file.
* Failed lookup (or "successful lookup" with an empty result)
* are non-fatal. Free the sr_input that was created by the
* lookup routine, but grab the input module kind and return an
* InputFormat instance to the application. This works because
* the application passes a filename, no input data got buffered
* in the sr_input that we release.
*/
input = NULL;
rc = sr_input_scan_file(filename.c_str(), &input);
if (rc != SR_OK)
return nullptr;
if (!input)
return nullptr;
imod = sr_input_module_get(input);
sr_input_free(input);
return shared_ptr<InputFormat>{new InputFormat{imod}, default_delete<InputFormat>{}};
}
map<string, shared_ptr<OutputFormat>> Context::output_formats()
{
map<string, shared_ptr<OutputFormat>> result;

2
bindings/cxx/include/libsigrokcxx/libsigrokcxx.hpp
View File

@ -252,6 +252,8 @@ public:
map<string, shared_ptr<Driver> > drivers();
/** Available input formats, indexed by name. */
map<string, shared_ptr<InputFormat> > input_formats();
/** Lookup the responsible input module for an input file. */
shared_ptr<InputFormat> input_format_match(string filename);
/** Available output formats, indexed by name. */
map<string, shared_ptr<OutputFormat> > output_formats();
/** Current log level. */