git/builtin/repo.c

155 lines
3.4 KiB
C

#define USE_THE_REPOSITORY_VARIABLE
#include "builtin.h"
#include "parse-options.h"
#include "refs.h"
#include "environment.h"
#include "shallow.h"
typedef const char *get_value_fn(struct repository *repo);
enum output_format {
FORMAT_KEYVALUE,
FORMAT_NULL_TERMINATED,
};
struct field {
const char *key;
get_value_fn *add_field_callback;
};
static const char *get_layout_bare(struct repository *repo UNUSED)
{
return is_bare_repository() ? "true" : "false";
}
static const char *get_layout_shallow(struct repository *repo)
{
return is_repository_shallow(repo) ? "true" : "false";
}
static const char *get_references_format(struct repository *repo)
{
return ref_storage_format_to_name(repo->ref_storage_format);
}
/* repo_info_fields keys should be in lexicographical order */
static const struct field repo_info_fields[] = {
{ "layout.bare", get_layout_bare },
{ "layout.shallow", get_layout_shallow },
{ "references.format", get_references_format },
};
static int repo_info_fields_cmp(const void *va, const void *vb)
{
const struct field *a = va;
const struct field *b = vb;
return strcmp(a->key, b->key);
}
static get_value_fn *get_value_callback(const char *key)
{
const struct field search_key = { key, NULL };
const struct field *found = bsearch(&search_key, repo_info_fields,
ARRAY_SIZE(repo_info_fields),
sizeof(struct field),
repo_info_fields_cmp);
return found ? found->add_field_callback : NULL;
}
static int qsort_strcmp(const void *va, const void *vb)
{
const char *a = *(const char **)va;
const char *b = *(const char **)vb;
return strcmp(a, b);
}
static int print_fields(int argc, const char **argv,
struct repository *repo,
enum output_format format)
{
const char *last = "";
char kv_sep;
char field_sep;
switch (format) {
case FORMAT_KEYVALUE:
kv_sep = '=';
field_sep = '\n';
break;
case FORMAT_NULL_TERMINATED:
kv_sep = '\n';
field_sep = '\0';
break;
}
QSORT(argv, argc, qsort_strcmp);
for (int i = 0; i < argc; i++) {
get_value_fn *callback;
const char *key = argv[i];
const char *value;
if (!strcmp(key, last))
continue;
callback = get_value_callback(key);
if (!callback)
return error("key %s not found", key);
value = callback(repo);
printf("%s%c%s%c", key, kv_sep, value, field_sep);
last = key;
}
return 0;
}
static int repo_info(int argc, const char **argv, const char *prefix,
struct repository *repo)
{
const char *format_str = "keyvalue";
enum output_format format;
const char *const repo_info_usage[] = {
"git repo info [<key>...]",
NULL
};
struct option options[] = {
OPT_STRING(0, "format", &format_str, N_("format"),
N_("output format")),
OPT_END()
};
argc = parse_options(argc, argv, prefix, options, repo_info_usage, 0);
if (!strcmp(format_str, "keyvalue"))
format = FORMAT_KEYVALUE;
else if (!strcmp(format_str, "null"))
format = FORMAT_NULL_TERMINATED;
else
die("invalid format %s", format_str);
return print_fields(argc, argv, repo, format);
}
int cmd_repo(int argc, const char **argv, const char *prefix,
struct repository *repo)
{
parse_opt_subcommand_fn *fn = NULL;
const char *const repo_usage[] = {
"git repo info [<key>...]",
NULL
};
struct option options[] = {
OPT_SUBCOMMAND("info", &fn, repo_info),
OPT_END()
};
argc = parse_options(argc, argv, prefix, options, repo_usage, 0);
return fn(argc, argv, prefix, repo);
}