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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));

GITERR_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);

GITERR_CHECK_ALLOC(dup->name);

if (head->entry->value) {

dup->value = git__strdup(head->entry->value);

GITERR_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)

{

git_strmap_iter pos;

config_entry_list *existing, *var;

int error = 0;

var = git__calloc(1, sizeof(config_entry_list));

GITERR_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));

GITERR_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)

{

khiter_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) {

giterr_set(GITERR_CONFIG, "entry is not unique due to being a multivar");

return -1;

}

if (entry->entry->include_depth) {

giterr_set(GITERR_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));

GITERR_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;

}