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Diffstat (limited to 'Documentation/technical/api-builtin.txt')
-rw-r--r-- | Documentation/technical/api-builtin.txt | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/Documentation/technical/api-builtin.txt b/Documentation/technical/api-builtin.txt deleted file mode 100644 index f3c1357b7c..0000000000 --- a/Documentation/technical/api-builtin.txt +++ /dev/null @@ -1,70 +0,0 @@ -builtin API -=========== - -Adding a new built-in ---------------------- - -There are 4 things to do to add a built-in command implementation to -Git: - -. Define the implementation of the built-in command `foo` with - signature: - - int cmd_foo(int argc, const char **argv, const char *prefix); - -. Add the external declaration for the function to `builtin.h`. - -. Add the command to `commands[]` table in `handle_internal_command()`, - defined in `git.c`. The entry should look like: - - { "foo", cmd_foo, <options> }, -+ -where options is the bitwise-or of: - -`RUN_SETUP`:: - - Make sure there is a Git directory to work on, and if there is a - work tree, chdir to the top of it if the command was invoked - in a subdirectory. If there is no work tree, no chdir() is - done. - -`USE_PAGER`:: - - If the standard output is connected to a tty, spawn a pager and - feed our output to it. - -`NEED_WORK_TREE`:: - - Make sure there is a work tree, i.e. the command cannot act - on bare repositories. - This only makes sense when `RUN_SETUP` is also set. - -. Add `builtin/foo.o` to `BUILTIN_OBJS` in `Makefile`. - -Additionally, if `foo` is a new command, there are 3 more things to do: - -. Add tests to `t/` directory. - -. Write documentation in `Documentation/git-foo.txt`. - -. Add an entry for `git-foo` to `command-list.txt`. - -. Add an entry for `/git-foo` to `.gitignore`. - - -How a built-in is called ------------------------- - -The implementation `cmd_foo()` takes three parameters, `argc`, `argv, -and `prefix`. The first two are similar to what `main()` of a -standalone command would be called with. - -When `RUN_SETUP` is specified in the `commands[]` table, and when you -were started from a subdirectory of the work tree, `cmd_foo()` is called -after chdir(2) to the top of the work tree, and `prefix` gets the path -to the subdirectory the command started from. This allows you to -convert a user-supplied pathname (typically relative to that directory) -to a pathname relative to the top of the work tree. - -The return value from `cmd_foo()` becomes the exit status of the -command. |