summaryrefslogtreecommitdiff
path: root/t/t7814-grep-recurse-submodules.sh
AgeCommit message (Collapse)AuthorFilesLines
2016-12-22grep: search history of moved submodulesLibravatar Brandon Williams1-0/+41
If a submodule was renamed at any point since it's inception then if you were to try and grep on a commit prior to the submodule being moved, you wouldn't be able to find a working directory for the submodule since the path in the past is different from the current path. This patch teaches grep to find the .git directory for a submodule in the parents .git/modules/ directory in the event the path to the submodule in the commit that is being searched differs from the state of the currently checked out commit. If found, the child process that is spawned to grep the submodule will chdir into its gitdir instead of a working directory. In order to override the explicit setting of submodule child process's gitdir environment variable (which was introduced in '10f5c526') `GIT_DIR_ENVIORMENT` needs to be pushed onto child process's env_array. This allows the searching of history from a submodule's gitdir, rather than from a working directory. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-22grep: enable recurse-submodules to work on <tree> objectsLibravatar Brandon Williams1-1/+102
Teach grep to recursively search in submodules when provided with a <tree> object. This allows grep to search a submodule based on the state of the submodule that is present in a commit of the super project. When grep is provided with a <tree> object, the name of the object is prefixed to all output. In order to provide uniformity of output between the parent and child processes the option `--parent-basename` has been added so that the child can preface all of it's output with the name of the parent's object instead of the name of the commit SHA1 of the submodule. This changes output from the command `git grep -e. -l --recurse-submodules HEAD` from: HEAD:file <commit sha1 of submodule>:sub/file to: HEAD:file HEAD:sub/file Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-22grep: optionally recurse into submodulesLibravatar Brandon Williams1-0/+99
Allow grep to recognize submodules and recursively search for patterns in each submodule. This is done by forking off a process to recursively call grep on each submodule. The top level --super-prefix option is used to pass a path to the submodule which can in turn be used to prepend to output or in pathspec matching logic. Recursion only occurs for submodules which have been initialized and checked out by the parent project. If a submodule hasn't been initialized and checked out it is simply skipped. In order to support the existing multi-threading infrastructure in grep, output from each child process is captured in a strbuf so that it can be later printed to the console in an ordered fashion. To limit the number of theads that are created, each child process has half the number of threads as its parents (minimum of 1), otherwise we potentailly have a fork-bomb. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>