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libgdata
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libgdata is a GLib-based library for accessing online service APIs using the
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GData protocol --- most notably, Google's services. It provides APIs to access
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the common Google services, and has full asynchronous support.
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See the test programs in gdata/tests/ for simple examples of how to use the
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code.
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libgdata is API and ABI stable.
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Dependencies
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============
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 • glib-2.0 ≥ 2.44.0
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 • libxml-2.0
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 • gio-2.0 ≥ 2.44.0
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 • libsoup-2.4 ≥ 2.42.0
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 • liboauth ≥ 0.9.4
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 • json-glib ≥ 0.15.0
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If compiling with --enable-gnome (for GNOME support):
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 • gcr-base-3
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 • goa-1.0 ≥ 3.8
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If compiling the demos:
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 • gtk+-3.0 ≥ 2.91.2
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Environment variables
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If the environment variable LIBGDATA_DEBUG is set to one of the following
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values, libgdata will give debug output (at various levels):
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 0: Output no debug messages or network logs
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 1: Output debug messages, but not network logs
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 2: Output debug messages and network traffic headers
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 3: Output debug messages and full network traffic logs, redacting usernames,
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    passwords and auth. tokens
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 4: Output debug messages and full network traffic logs, and don't redact
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    usernames, passwords and auth. tokens
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If LIBGDATA_DEBUG is unset, no debug output will be produced.
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So, to debug a program which uses libgdata, run it from a terminal with the
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following command:
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$ LIBGDATA_DEBUG=3 ./my-program-name &> libgdata.log
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Deprecation guards
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==================
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If LIBGDATA_DISABLE_DEPRECATED is defined when compiling against libgdata, all
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deprecated API will be removed from included headers.
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Licensing
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libgdata is licensed under the LGPL; see COPYING for more details.
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Contact
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Philip Withnall <philip@tecnocode.co.uk>
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https://wiki.gnome.org/Projects/libgdata