Tag
Hash :
f673e232
Author :
Date :
2018-12-27T13:47:34
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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* 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 "config_entries.h"
typedef struct config_entry_list {
struct config_entry_list *next;
struct config_entry_list *last;
git_config_entry *entry;
} config_entry_list;
typedef struct config_entries_iterator {
git_config_iterator parent;
git_config_entries *entries;
config_entry_list *head;
} config_entries_iterator;
struct git_config_entries {
git_refcount rc;
git_strmap *map;
config_entry_list *list;
};
static void config_entry_list_free(config_entry_list *list)
{
config_entry_list *next;
while (list != NULL) {
next = list->next;
git__free((char*) list->entry->name);
git__free((char *) list->entry->value);
git__free(list->entry);
git__free(list);
list = next;
};
}
static void config_entry_list_append(config_entry_list **list, config_entry_list *entry)
{
if (*list)
(*list)->last->next = entry;
else
*list = entry;
(*list)->last = entry;
}
int git_config_entries_new(git_config_entries **out)
{
git_config_entries *entries;
int error;
entries = git__calloc(1, sizeof(git_config_entries));
GIT_ERROR_CHECK_ALLOC(entries);
GIT_REFCOUNT_INC(entries);
if ((error = git_strmap_alloc(&entries->map)) < 0)
git__free(entries);
else
*out = entries;
return error;
}
int git_config_entries_dup(git_config_entries **out, git_config_entries *entries)
{
git_config_entries *result = NULL;
config_entry_list *head;
int error;
if ((error = git_config_entries_new(&result)) < 0)
goto out;
for (head = entries->list; head; head = head->next) {
git_config_entry *dup;
dup = git__calloc(1, sizeof(git_config_entry));
dup->name = git__strdup(head->entry->name);
GIT_ERROR_CHECK_ALLOC(dup->name);
if (head->entry->value) {
dup->value = git__strdup(head->entry->value);
GIT_ERROR_CHECK_ALLOC(dup->value);
}
dup->level = head->entry->level;
dup->include_depth = head->entry->include_depth;
if ((error = git_config_entries_append(result, dup)) < 0)
goto out;
}
*out = result;
result = NULL;
out:
git_config_entries_free(result);
return error;
}
void git_config_entries_incref(git_config_entries *entries)
{
GIT_REFCOUNT_INC(entries);
}
static void config_entries_free(git_config_entries *entries)
{
config_entry_list *list = NULL, *next;
git_strmap_foreach_value(entries->map, list, config_entry_list_free(list));
git_strmap_free(entries->map);
list = entries->list;
while (list != NULL) {
next = list->next;
git__free(list);
list = next;
}
git__free(entries);
}
void git_config_entries_free(git_config_entries *entries)
{
if (entries)
GIT_REFCOUNT_DEC(entries, config_entries_free);
}
int git_config_entries_append(git_config_entries *entries, git_config_entry *entry)
{
config_entry_list *existing, *var;
int error = 0;
size_t pos;
var = git__calloc(1, sizeof(config_entry_list));
GIT_ERROR_CHECK_ALLOC(var);
var->entry = entry;
pos = git_strmap_lookup_index(entries->map, entry->name);
if (!git_strmap_valid_index(entries->map, pos)) {
/*
* We only ever inspect `last` from the first config
* entry in a multivar. In case where this new entry is
* the first one in the entry map, it will also be the
* last one at the time of adding it, which is
* why we set `last` here to itself. Otherwise we
* do not have to set `last` and leave it set to
* `NULL`.
*/
var->last = var;
git_strmap_insert(entries->map, entry->name, var, &error);
if (error > 0)
error = 0;
} else {
existing = git_strmap_value_at(entries->map, pos);
config_entry_list_append(&existing, var);
}
var = git__calloc(1, sizeof(config_entry_list));
GIT_ERROR_CHECK_ALLOC(var);
var->entry = entry;
config_entry_list_append(&entries->list, var);
return error;
}
int config_entry_get(config_entry_list **out, git_config_entries *entries, const char *key)
{
size_t pos;
pos = git_strmap_lookup_index(entries->map, key);
/* no error message; the config system will write one */
if (!git_strmap_valid_index(entries->map, pos))
return GIT_ENOTFOUND;
*out = git_strmap_value_at(entries->map, pos);
return 0;
}
int git_config_entries_get(git_config_entry **out, git_config_entries *entries, const char *key)
{
config_entry_list *entry;
int error;
if ((error = config_entry_get(&entry, entries, key)) < 0)
return error;
*out = entry->last->entry;
return 0;
}
int git_config_entries_get_unique(git_config_entry **out, git_config_entries *entries, const char *key)
{
config_entry_list *entry;
int error;
if ((error = config_entry_get(&entry, entries, key)) < 0)
return error;
if (entry->next != NULL) {
git_error_set(GIT_ERROR_CONFIG, "entry is not unique due to being a multivar");
return -1;
}
if (entry->entry->include_depth) {
git_error_set(GIT_ERROR_CONFIG, "entry is not unique due to being included");
return -1;
}
*out = entry->entry;
return 0;
}
void config_iterator_free(git_config_iterator *iter)
{
config_entries_iterator *it = (config_entries_iterator *) iter;
git_config_entries_free(it->entries);
git__free(it);
}
int config_iterator_next(
git_config_entry **entry,
git_config_iterator *iter)
{
config_entries_iterator *it = (config_entries_iterator *) iter;
if (!it->head)
return GIT_ITEROVER;
*entry = it->head->entry;
it->head = it->head->next;
return 0;
}
int git_config_entries_iterator_new(git_config_iterator **out, git_config_entries *entries)
{
config_entries_iterator *it;
it = git__calloc(1, sizeof(config_entries_iterator));
GIT_ERROR_CHECK_ALLOC(it);
it->parent.next = config_iterator_next;
it->parent.free = config_iterator_free;
it->head = entries->list;
it->entries = entries;
git_config_entries_incref(entries);
*out = &it->parent;
return 0;
}