/** Parse arguments as copied from git-diff. */
static void parse_opts(struct opts *o, int argc, char *argv[])
{
struct args_info args = ARGS_INFO_INIT;
for (args.pos = 1; args.pos < argc; ++args.pos) {
const char *a = argv[args.pos];
if (a[0] != '-') {
if (o->treeish1 == NULL)
o->treeish1 = a;
else if (o->treeish2 == NULL)
o->treeish2 = a;
else
usage("Only one or two tree identifiers can be provided", NULL);
}
else if (!strcmp(a, "-p") || !strcmp(a, "-u") ||
!strcmp(a, "--patch")) {
o->output |= OUTPUT_DIFF;
o->format = GIT_DIFF_FORMAT_PATCH;
}
else if (!strcmp(a, "--cached"))
o->cache = CACHE_ONLY;
else if (!strcmp(a, "--nocache"))
o->cache = CACHE_NONE;
else if (!strcmp(a, "--name-only") || !strcmp(a, "--format=name"))
o->format = GIT_DIFF_FORMAT_NAME_ONLY;
else if (!strcmp(a, "--name-status") ||
!strcmp(a, "--format=name-status"))
o->format = GIT_DIFF_FORMAT_NAME_STATUS;
else if (!strcmp(a, "--raw") || !strcmp(a, "--format=raw"))
o->format = GIT_DIFF_FORMAT_RAW;
else if (!strcmp(a, "--format=diff-index")) {
o->format = GIT_DIFF_FORMAT_RAW;
o->diffopts.id_abbrev = 40;
}
else if (!strcmp(a, "--color"))
o->color = 0;
else if (!strcmp(a, "--no-color"))
o->color = -1;
else if (!strcmp(a, "-R"))
o->diffopts.flags |= GIT_DIFF_REVERSE;
else if (!strcmp(a, "-a") || !strcmp(a, "--text"))
o->diffopts.flags |= GIT_DIFF_FORCE_TEXT;
else if (!strcmp(a, "--ignore-space-at-eol"))
o->diffopts.flags |= GIT_DIFF_IGNORE_WHITESPACE_EOL;
else if (!strcmp(a, "-b") || !strcmp(a, "--ignore-space-change"))
o->diffopts.flags |= GIT_DIFF_IGNORE_WHITESPACE_CHANGE;
else if (!strcmp(a, "-w") || !strcmp(a, "--ignore-all-space"))
o->diffopts.flags |= GIT_DIFF_IGNORE_WHITESPACE;
else if (!strcmp(a, "--ignored"))
o->diffopts.flags |= GIT_DIFF_INCLUDE_IGNORED;
else if (!strcmp(a, "--untracked"))
o->diffopts.flags |= GIT_DIFF_INCLUDE_UNTRACKED;
else if (!strcmp(a, "--patience"))
o->diffopts.flags |= GIT_DIFF_PATIENCE;
else if (!strcmp(a, "--minimal"))
o->diffopts.flags |= GIT_DIFF_MINIMAL;
else if (!strcmp(a, "--stat"))
o->output |= OUTPUT_STAT;
else if (!strcmp(a, "--numstat"))
o->output |= OUTPUT_NUMSTAT;
else if (!strcmp(a, "--shortstat"))
o->output |= OUTPUT_SHORTSTAT;
else if (!strcmp(a, "--summary"))
o->output |= OUTPUT_SUMMARY;
else if (match_uint16_arg(
&o->findopts.rename_threshold, &args, "-M") ||
match_uint16_arg(
&o->findopts.rename_threshold, &args, "--find-renames"))
o->findopts.flags |= GIT_DIFF_FIND_RENAMES;
else if (match_uint16_arg(
&o->findopts.copy_threshold, &args, "-C") ||
match_uint16_arg(
&o->findopts.copy_threshold, &args, "--find-copies"))
o->findopts.flags |= GIT_DIFF_FIND_COPIES;
else if (!strcmp(a, "--find-copies-harder"))
o->findopts.flags |= GIT_DIFF_FIND_COPIES_FROM_UNMODIFIED;
else if (is_prefixed(a, "-B") || is_prefixed(a, "--break-rewrites"))
/* TODO: parse thresholds */
o->findopts.flags |= GIT_DIFF_FIND_REWRITES;
else if (!match_uint32_arg(
&o->diffopts.context_lines, &args, "-U") &&
!match_uint32_arg(
&o->diffopts.context_lines, &args, "--unified") &&
!match_uint32_arg(
&o->diffopts.interhunk_lines, &args, "--inter-hunk-context") &&
!match_uint16_arg(
&o->diffopts.id_abbrev, &args, "--abbrev") &&
!match_str_arg(&o->diffopts.old_prefix, &args, "--src-prefix") &&
!match_str_arg(&o->diffopts.new_prefix, &args, "--dst-prefix") &&
!match_str_arg(&o->dir, &args, "--git-dir"))
usage("Unknown command line argument", a);
}
}
int main(int argc, char * argv[])
{
bool no_options = true, quiet = false, bare = false, initial_commit = false;
uint32_t shared = GIT_REPOSITORY_INIT_SHARED_UMASK;
const char *templ = nullptr, *gitdir = nullptr, *dir = nullptr;
auto_git_initializer;
/* Process arguments */
for (int i = 1; i < argc; ++i)
{
auto arg = argv[i];
StringView a = arg;
if (arg[0] == '-')
no_options = false;
if (arg[0] != '-')
{
if (dir)
usage("extra argument", arg);
dir = arg;
}
else if (a == "-q" || a == "--quiet")
quiet = true;
else if (a == "--bare")
bare = true;
else if (auto pfxlen = is_prefixed(a, "--template="))
templ = arg + pfxlen;
else if (a == "--separate-git-dir")
gitdir = argv[++i];
else if (auto pfxlen = is_prefixed(a, "--separate-git-dir="))
gitdir = arg + pfxlen;
else if (a == "--shared")
shared = GIT_REPOSITORY_INIT_SHARED_GROUP;
else if (auto pfxlen = is_prefixed(a, "--shared="))
shared = parse_shared(arg + pfxlen);
else if (a == "--initial-commit")
initial_commit = true;
else
usage("unknown option", arg);
}
if (!dir)
usage("must specify directory to init", nullptr);
/* Initialize repository */
Repository repo = no_options
? Repository(dir, Repository::init)
: Repository(dir, Repository::init, make_opts(bare, templ, shared, gitdir, dir));
/* Print a message to stdout like "git init" does */
if (!quiet)
{
printf("Initialized empty Git repository in %s\n",
(bare || gitdir) ? repo.path() : repo.workdir());
}
/* As an extension to the basic "git init" command, this example
* gives the option to create an empty initial commit. This is
* mostly to demonstrate what it takes to do that, but also some
* people like to have that empty base commit in their repo.
*/
if (initial_commit)
{
create_initial_commit(repo);
printf("Created empty initial commit\n");
}
return 0;
}
