/*
* libgit2 "add" example - shows how to modify the index
*
* Written by the libgit2 contributors
*
* To the extent possible under law, the author(s) have dedicated all copyright
* and related and neighboring rights to this software to the public domain
* worldwide. This software is distributed without any warranty.
*
* You should have received a copy of the CC0 Public Domain Dedication along
* with this software. If not, see
* <http://creativecommons.org/publicdomain/zero/1.0/>.
*/
#include "common.h"
/**
* The following example demonstrates how to add files with libgit2.
*
* It will use the repository in the current working directory, and act
* on files passed as its parameters.
*
* Recognized options are:
* -v/--verbose: show the file's status after acting on it.
* -n/--dry-run: do not actually change the index.
* -u/--update: update the index instead of adding to it.
*/
enum index_mode {
INDEX_NONE,
INDEX_ADD,
};
struct index_options {
int dry_run;
int verbose;
git_repository *repo;
enum index_mode mode;
int add_update;
};
/* Forward declarations for helpers */
static void parse_opts(const char **repo_path, struct index_options *options, struct args_info *args);
int print_matched_cb(const char *path, const char *matched_pathspec, void *payload);
int lg2_add(git_repository *repo, int argc, char **argv)
{
git_index_matched_path_cb matched_cb = NULL;
git_index *index;
git_strarray array = {0};
struct index_options options;
struct args_info args = ARGS_INFO_INIT;
/* Parse the options & arguments. */
parse_opts(NULL, &options, &args);
strarray_from_args(&array, &args);
/* Grab the repository's index. */
check_lg2(git_repository_index(&index, repo), "Could not open repository index", NULL);
/* Setup a callback if the requested options need it */
if (options.verbose || options.dry_run) {
matched_cb = &print_matched_cb;
}
options.repo = repo;
/* Perform the requested action with the index and files */
if (options.add_update) {
git_index_update_all(index, &array, matched_cb, &options);
} else {
git_index_add_all(index, &array, 0, matched_cb, &options);
}
/* Cleanup memory */
git_index_write(index);
git_index_free(index);
return 0;
}
/*
* This callback is called for each file under consideration by
* git_index_(update|add)_all above.
* It makes uses of the callback's ability to abort the action.
*/
int print_matched_cb(const char *path, const char *matched_pathspec, void *payload)
{
struct index_options options = *(struct index_options *)(payload);
int ret;
unsigned status;
(void)matched_pathspec;
/* Get the file status */
if (git_status_file(&status, options.repo, path) < 0)
return -1;
if ((status & GIT_STATUS_WT_MODIFIED) || (status & GIT_STATUS_WT_NEW)) {
printf("add '%s'\n", path);
ret = 0;
} else {
ret = 1;
}
if (options.dry_run)
ret = 1;
return ret;
}
void init_array(git_strarray *array, int argc, char **argv)
{
unsigned int i;
array->count = argc;
array->strings = calloc(array->count, sizeof(char *));
assert(array->strings != NULL);
for (i = 0; i < array->count; i++) {
array->strings[i] = argv[i];
}
return;
}
void print_usage(void)
{
fprintf(stderr, "usage: add [options] [--] file-spec [file-spec] [...]\n\n");
fprintf(stderr, "\t-n, --dry-run dry run\n");
fprintf(stderr, "\t-v, --verbose be verbose\n");
fprintf(stderr, "\t-u, --update update tracked files\n");
exit(1);
}
static void parse_opts(const char **repo_path, struct index_options *options, struct args_info *args)
{
if (args->argc <= 1)
print_usage();
for (args->pos = 1; args->pos < args->argc; ++args->pos) {
const char *curr = args->argv[args->pos];
if (curr[0] != '-') {
if (!strcmp("add", curr)) {
options->mode = INDEX_ADD;
continue;
} else if (options->mode == INDEX_NONE) {
fprintf(stderr, "missing command: %s", curr);
print_usage();
break;
} else {
/* We might be looking at a filename */
break;
}
} else if (match_bool_arg(&options->verbose, args, "--verbose") ||
match_bool_arg(&options->dry_run, args, "--dry-run") ||
match_str_arg(repo_path, args, "--git-dir") ||
(options->mode == INDEX_ADD && match_bool_arg(&options->add_update, args, "--update"))) {
continue;
} else if (match_bool_arg(NULL, args, "--help")) {
print_usage();
break;
} else if (match_arg_separator(args)) {
break;
} else {
fprintf(stderr, "Unsupported option %s.\n", curr);
print_usage();
}
}
}
