QSslCertificate::fromPath() does some extra work:
- matching wildcard glob or regular expression patterns
- checks if the string it's called on is a file or a dir
That extra work isn't needed when you already have the path to a
specific certificate file.
E.g. qtlsbackend_openssl.cpp:systemCaCertificates() used to call
fromPath() on *.pem/*.crt files that it got from iterating over system
certifcates dirs.
This also de-duplicates the code in fromPath().
[ChangeLog][QtNetwork][QSslCertificate] Added fromFile() method.
Change-Id: I92ab358e4711866dd4510da42c47905c7dae58b1
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2be51c6923