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Merge branch 'ao/submodule-wo-gitmodules-checked-out'

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The submodule support has been updated to read from the blob at
HEAD:.gitmodules when the .gitmodules file is missing from the
working tree.

* ao/submodule-wo-gitmodules-checked-out:
  t/helper: add test-submodule-nested-repo-config
  submodule: support reading .gitmodules when it's not in the working tree
  submodule: add a helper to check if it is safe to write to .gitmodules
  t7506: clean up .gitmodules properly before setting up new scenario
  submodule: use the 'submodule--helper config' command
  submodule--helper: add a new 'config' subcommand
  t7411: be nicer to future tests and really clean things up
  t7411: merge tests 5 and 6
  submodule: factor out a config_set_in_gitmodules_file_gently function
  submodule: add a print_config_from_gitmodules() helper
This commit is contained in:
Junio C Hamano
2018-11-13 22:37:22 +09:00
parent 504bdc5994 2b1257e463
commit abb4824d13
16 changed files with 455 additions and 33 deletions
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28
submodule.c
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@ -51,6 +51,24 @@ int is_gitmodules_unmerged(const struct index_state *istate)
return 0;
}
/*
* Check if the .gitmodules file is safe to write.
*
* Writing to the .gitmodules file requires that the file exists in the
* working tree or, if it doesn't, that a brand new .gitmodules file is going
* to be created (i.e. it's neither in the index nor in the current branch).
*
* It is not safe to write to .gitmodules if it's not in the working tree but
* it is in the index or in the current branch, because writing new values
* (and staging them) would blindly overwrite ALL the old content.
*/
int is_writing_gitmodules_ok(void)
{
struct object_id oid;
return file_exists(GITMODULES_FILE) ||
(get_oid(GITMODULES_INDEX, &oid) < 0 && get_oid(GITMODULES_HEAD, &oid) < 0);
}
/*
* Check if the .gitmodules file has unstaged modifications. This must be
* checked before allowing modifications to the .gitmodules file with the
@ -89,6 +107,7 @@ int update_path_in_gitmodules(const char *oldpath, const char *newpath)
{
struct strbuf entry = STRBUF_INIT;
const struct submodule *submodule;
int ret;
if (!file_exists(GITMODULES_FILE)) /* Do nothing without .gitmodules */
return -1;
@ -104,14 +123,9 @@ int update_path_in_gitmodules(const char *oldpath, const char *newpath)
strbuf_addstr(&entry, "submodule.");
strbuf_addstr(&entry, submodule->name);
strbuf_addstr(&entry, ".path");
if (git_config_set_in_file_gently(GITMODULES_FILE, entry.buf, newpath) < 0) {
/* Maybe the user already did that, don't error out here */
warning(_("Could not update .gitmodules entry %s"), entry.buf);
strbuf_release(&entry);
return -1;
}
ret = config_set_in_gitmodules_file_gently(entry.buf, newpath);
strbuf_release(&entry);
return 0;
return ret;
}
/*