/*
* Copyright (C) 2009-2012 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "fileops.h"
#include "config.h"
#include "git2/config.h"
#include "vector.h"
#if GIT_WIN32
# include <windows.h>
#endif
#include <ctype.h>
typedef struct {
git_config_file *file;
int priority;
} file_internal;
static void config_free(git_config *cfg)
{
unsigned int i;
git_config_file *file;
file_internal *internal;
for(i = 0; i < cfg->files.length; ++i){
internal = git_vector_get(&cfg->files, i);
file = internal->file;
file->free(file);
git__free(internal);
}
git_vector_free(&cfg->files);
git__free(cfg);
}
void git_config_free(git_config *cfg)
{
if (cfg == NULL)
return;
GIT_REFCOUNT_DEC(cfg, config_free);
}
static int config_backend_cmp(const void *a, const void *b)
{
const file_internal *bk_a = (const file_internal *)(a);
const file_internal *bk_b = (const file_internal *)(b);
return bk_b->priority - bk_a->priority;
}
int git_config_new(git_config **out)
{
git_config *cfg;
cfg = git__malloc(sizeof(git_config));
GITERR_CHECK_ALLOC(cfg);
memset(cfg, 0x0, sizeof(git_config));
if (git_vector_init(&cfg->files, 3, config_backend_cmp) < 0) {
git__free(cfg);
return -1;
}
*out = cfg;
GIT_REFCOUNT_INC(cfg);
return 0;
}
int git_config_add_file_ondisk(git_config *cfg, const char *path, int priority)
{
git_config_file *file = NULL;
if (git_config_file__ondisk(&file, path) < 0)
return -1;
if (git_config_add_file(cfg, file, priority) < 0) {
/*
* free manually; the file is not owned by the config
* instance yet and will not be freed on cleanup
*/
file->free(file);
return -1;
}
return 0;
}
int git_config_open_ondisk(git_config **cfg, const char *path)
{
if (git_config_new(cfg) < 0)
return -1;
if (git_config_add_file_ondisk(*cfg, path, 1) < 0) {
git_config_free(*cfg);
return -1;
}
return 0;
}
int git_config_add_file(git_config *cfg, git_config_file *file, int priority)
{
file_internal *internal;
int result;
assert(cfg && file);
if ((result = file->open(file)) < 0)
return result;
internal = git__malloc(sizeof(file_internal));
GITERR_CHECK_ALLOC(internal);
internal->file = file;
internal->priority = priority;
if (git_vector_insert(&cfg->files, internal) < 0) {
git__free(internal);
return -1;
}
git_vector_sort(&cfg->files);
internal->file->cfg = cfg;
return 0;
}
/*
* Loop over all the variables
*/
int git_config_foreach(git_config *cfg, int (*fn)(const char *, const char *, void *), void *data)
{
int ret = 0;
unsigned int i;
file_internal *internal;
git_config_file *file;
for(i = 0; i < cfg->files.length && ret == 0; ++i) {
internal = git_vector_get(&cfg->files, i);
file = internal->file;
ret = file->foreach(file, fn, data);
}
return ret;
}
int git_config_delete(git_config *cfg, const char *name)
{
file_internal *internal;
git_config_file *file;
assert(cfg->files.length);
internal = git_vector_get(&cfg->files, 0);
file = internal->file;
return file->del(file, name);
}
/**************
* Setters
**************/
int git_config_set_int64(git_config *cfg, const char *name, int64_t value)
{
char str_value[32]; /* All numbers should fit in here */
p_snprintf(str_value, sizeof(str_value), "%" PRId64, value);
return git_config_set_string(cfg, name, str_value);
}
int git_config_set_int32(git_config *cfg, const char *name, int32_t value)
{
return git_config_set_int64(cfg, name, (int64_t)value);
}
int git_config_set_bool(git_config *cfg, const char *name, int value)
{
return git_config_set_string(cfg, name, value ? "true" : "false");
}
int git_config_set_string(git_config *cfg, const char *name, const char *value)
{
file_internal *internal;
git_config_file *file;
assert(cfg->files.length);
internal = git_vector_get(&cfg->files, 0);
file = internal->file;
return file->set(file, name, value);
}
static int parse_int64(int64_t *out, const char *value)
{
const char *num_end;
int64_t num;
if (git__strtol64(&num, value, &num_end, 0) < 0)
return -1;
switch (*num_end) {
case 'g':
case 'G':
num *= 1024;
/* fallthrough */
case 'm':
case 'M':
num *= 1024;
/* fallthrough */
case 'k':
case 'K':
num *= 1024;
/* check that that there are no more characters after the
* given modifier suffix */
if (num_end[1] != '\0')
return -1;
/* fallthrough */
case '\0':
*out = num;
return 0;
default:
return -1;
}
}
static int parse_int32(int32_t *out, const char *value)
{
int64_t tmp;
int32_t truncate;
if (parse_int64(&tmp, value) < 0)
return -1;
truncate = tmp & 0xFFFFFFFF;
if (truncate != tmp)
return -1;
*out = truncate;
return 0;
}
/***********
* Getters
***********/
int git_config_lookup_map_value(
git_cvar_map *maps, size_t map_n, const char *value, int *out)
{
size_t i;
if (!value)
return GIT_ENOTFOUND;
for (i = 0; i < map_n; ++i) {
git_cvar_map *m = maps + i;
switch (m->cvar_type) {
case GIT_CVAR_FALSE:
case GIT_CVAR_TRUE: {
int bool_val;
if (git__parse_bool(&bool_val, value) == 0 &&
bool_val == (int)m->cvar_type) {
*out = m->map_value;
return 0;
}
break;
}
case GIT_CVAR_INT32:
if (parse_int32(out, value) == 0)
return 0;
break;
case GIT_CVAR_STRING:
if (strcasecmp(value, m->str_match) == 0) {
*out = m->map_value;
return 0;
}
break;
}
}
return GIT_ENOTFOUND;
}
int git_config_get_mapped(
int *out,
git_config *cfg,
const char *name,
git_cvar_map *maps,
size_t map_n)
{
const char *value;
int ret;
ret = git_config_get_string(&value, cfg, name);
if (ret < 0)
return ret;
if (!git_config_lookup_map_value(maps, map_n, value, out))
return 0;
giterr_set(GITERR_CONFIG,
"Failed to map the '%s' config variable with a valid value", name);
return -1;
}
int git_config_get_int64(int64_t *out, git_config *cfg, const char *name)
{
const char *value;
int ret;
ret = git_config_get_string(&value, cfg, name);
if (ret < 0)
return ret;
if (parse_int64(out, value) < 0) {
giterr_set(GITERR_CONFIG, "Failed to parse '%s' as an integer", value);
return -1;
}
return 0;
}
int git_config_get_int32(int32_t *out, git_config *cfg, const char *name)
{
const char *value;
int ret;
ret = git_config_get_string(&value, cfg, name);
if (ret < 0)
return ret;
if (parse_int32(out, value) < 0) {
giterr_set(GITERR_CONFIG, "Failed to parse '%s' as a 32-bit integer", value);
return -1;
}
return 0;
}
int git_config_get_bool(int *out, git_config *cfg, const char *name)
{
const char *value;
int ret;
ret = git_config_get_string(&value, cfg, name);
if (ret < 0)
return ret;
if (git__parse_bool(out, value) == 0)
return 0;
if (parse_int32(out, value) == 0) {
*out = !!(*out);
return 0;
}
giterr_set(GITERR_CONFIG, "Failed to parse '%s' as a boolean value", value);
return -1;
}
int git_config_get_string(const char **out, git_config *cfg, const char *name)
{
file_internal *internal;
unsigned int i;
assert(cfg->files.length);
*out = NULL;
git_vector_foreach(&cfg->files, i, internal) {
git_config_file *file = internal->file;
int ret = file->get(file, name, out);
if (ret != GIT_ENOTFOUND)
return ret;
}
giterr_set(GITERR_CONFIG, "Config variable '%s' not found", name);
return GIT_ENOTFOUND;
}
int git_config_get_multivar(git_config *cfg, const char *name, const char *regexp,
int (*fn)(const char *value, void *data), void *data)
{
file_internal *internal;
git_config_file *file;
int ret = GIT_ENOTFOUND;
unsigned int i;
assert(cfg->files.length);
/*
* This loop runs the "wrong" way 'round because we need to
* look at every value from the most general to most specific
*/
for (i = cfg->files.length; i > 0; --i) {
internal = git_vector_get(&cfg->files, i - 1);
file = internal->file;
ret = file->get_multivar(file, name, regexp, fn, data);
if (ret < 0 && ret != GIT_ENOTFOUND)
return ret;
}
return 0;
}
int git_config_set_multivar(git_config *cfg, const char *name, const char *regexp, const char *value)
{
file_internal *internal;
git_config_file *file;
int ret = GIT_ENOTFOUND;
unsigned int i;
for (i = cfg->files.length; i > 0; --i) {
internal = git_vector_get(&cfg->files, i - 1);
file = internal->file;
ret = file->set_multivar(file, name, regexp, value);
if (ret < 0 && ret != GIT_ENOTFOUND)
return ret;
}
return 0;
}
int git_config_find_global_r(git_buf *path)
{
return git_futils_find_global_file(path, GIT_CONFIG_FILENAME);
}
int git_config_find_global(char *global_config_path, size_t length)
{
git_buf path = GIT_BUF_INIT;
int ret = git_config_find_global_r(&path);
if (ret < 0) {
git_buf_free(&path);
return ret;
}
if (path.size >= length) {
git_buf_free(&path);
giterr_set(GITERR_NOMEMORY,
"Path is to long to fit on the given buffer");
return -1;
}
git_buf_copy_cstr(global_config_path, length, &path);
git_buf_free(&path);
return 0;
}
int git_config_find_system_r(git_buf *path)
{
return git_futils_find_system_file(path, GIT_CONFIG_FILENAME_SYSTEM);
}
int git_config_find_system(char *system_config_path, size_t length)
{
git_buf path = GIT_BUF_INIT;
int ret = git_config_find_system_r(&path);
if (ret < 0) {
git_buf_free(&path);
return ret;
}
if (path.size >= length) {
git_buf_free(&path);
giterr_set(GITERR_NOMEMORY,
"Path is to long to fit on the given buffer");
return -1;
}
git_buf_copy_cstr(system_config_path, length, &path);
git_buf_free(&path);
return 0;
}
int git_config_open_global(git_config **out)
{
int error;
git_buf path = GIT_BUF_INIT;
if ((error = git_config_find_global_r(&path)) < 0)
return error;
error = git_config_open_ondisk(out, git_buf_cstr(&path));
git_buf_free(&path);
return error;
}
