dannas (who said he really likes git log -p)


r943445 | stsp | 2010-05-12 05:59:27 -0500 (Wed, 12 May 2010)

Add a new --show-diff option to svn log, fixing part of issue #2909.

svn log --show-diff makes the svn log command provide inline diff output.
This is a fairly naive implementation, done entirely within the CLI client.
A separate RA session is opened to retrieve the diff. It behaves more or
less like one svn log invocation coupled with many svn diff invocations
(one for each revision in the log). This means first and foremost that
it is a bit slow. But it works.

* subversion/svn/cl.h
  (svn_cl__opt_state_t): Add SHOW_DIFF member.

* subversion/svn/log-cmd.c
  (log_receiver_baton): Add a client context CTX here so we can invoke
   svn_client_diff5(), replacing the CANCEL_FUNC and CANCEL_BATON members.
   Also add TARGET_URL member to be used as root of the diff operation.
   The new SHOW_DIFF and DIFF_EXTENSIONS members represent the --show-diff
   and --extensions options.
  (log_entry_receiver): Adjust calls to cancellation functions to baton
   changes. Print a diff if the --show-diff option was passed. Flush stderr
   as well as stdout since an external diff tool might write to stderr.
  (log_entry_receiver_xml): Adjust calls to cancellation functions to baton
   changes. There is no support for printing diffs in XML mode yet so nothing
   else changed here.
  (svn_cl__log): Make sure diff options passed are consistent. Adjust
   population of the baton to above changes.

* subversion/svn/main.c
  (svn_cl__longopt_t): Add OPT_SHOW_DIFF.
  (svn_cl__options): Add and document the new --show-diff option, alias
   it to --diff.
  (svn_cl__cmd_table): Make svn log accept the --show-diff, --diff-cmd,
   and --extensions options.
  (main): Handle --show-diff option.

* subversion/tests/cmdline/getopt_tests_data/svn_help_log_switch_stdout:
   Adjust, output has changed.

Inspired by: dannas (who said he really likes git log -p)