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| | #include "cache.h"
#include "change-table.h"
#include "commit.h"
#include "ref-filter.h"
#include "metacommit-parser.h"
void change_table_init(struct change_table *to_initialize)
{
memset(to_initialize, 0, sizeof(*to_initialize));
mem_pool_init(&to_initialize->memory_pool, 0);
to_initialize->memory_pool.block_alloc = 4*1024 - sizeof(struct mp_block);
oidmap_init(&to_initialize->oid_to_metadata_index, 0);
string_list_init_dup(&to_initialize->refname_to_change_head);
}
static void change_list_clear(struct change_list *to_clear) {
string_list_clear(&to_clear->additional_refnames, 0);
}
static void commit_change_list_entry_clear(
struct commit_change_list_entry *to_clear) {
change_list_clear(&to_clear->changes);
}
void change_table_clear(struct change_table *to_clear)
{
struct oidmap_iter iter;
struct commit_change_list_entry *next;
for (next = oidmap_iter_first(&to_clear->oid_to_metadata_index, &iter);
next;
next = oidmap_iter_next(&iter)) {
commit_change_list_entry_clear(next);
}
oidmap_free(&to_clear->oid_to_metadata_index, 0);
string_list_clear(&to_clear->refname_to_change_head, 0);
mem_pool_discard(&to_clear->memory_pool, 0);
}
static void add_head_to_commit(struct change_table *to_modify,
const struct object_id *to_add, const char *refname)
{
struct commit_change_list_entry *entry;
/**
* Note: the indices in the map are 1-based. 0 is used to indicate a missing
* element.
*/
entry = oidmap_get(&to_modify->oid_to_metadata_index, to_add);
if (!entry) {
entry = mem_pool_calloc(&to_modify->memory_pool, 1,
sizeof(*entry));
oidcpy(&entry->entry.oid, to_add);
oidmap_put(&to_modify->oid_to_metadata_index, entry);
string_list_init_nodup(&entry->changes.additional_refnames);
}
if (!entry->changes.first_refname)
entry->changes.first_refname = refname;
else
string_list_insert(&entry->changes.additional_refnames, refname);
}
void change_table_add(struct change_table *to_modify, const char *refname,
struct commit *to_add)
{
struct change_head *new_head;
struct string_list_item *new_item;
int metacommit_type;
new_head = mem_pool_calloc(&to_modify->memory_pool, 1,
sizeof(*new_head));
oidcpy(&new_head->head, &to_add->object.oid);
metacommit_type = get_metacommit_content(to_add, &new_head->content);
if (metacommit_type == METACOMMIT_TYPE_NONE)
oidcpy(&new_head->content, &to_add->object.oid);
new_head->abandoned = (metacommit_type == METACOMMIT_TYPE_ABANDONED);
new_head->remote = starts_with(refname, "refs/remote/");
new_head->hidden = starts_with(refname, "refs/hiddenmetas/");
new_item = string_list_insert(&to_modify->refname_to_change_head, refname);
new_item->util = new_head;
/* Use pointers to the copy of the string we're retaining locally */
refname = new_item->string;
if (!oideq(&new_head->content, &new_head->head))
add_head_to_commit(to_modify, &new_head->content, refname);
add_head_to_commit(to_modify, &new_head->head, refname);
}
void change_table_add_all_visible(struct change_table *to_modify,
struct repository* repo)
{
struct ref_filter filter;
const char *name_patterns[] = {NULL};
memset(&filter, 0, sizeof(filter));
filter.kind = FILTER_REFS_CHANGES;
filter.name_patterns = name_patterns;
change_table_add_matching_filter(to_modify, repo, &filter);
}
void change_table_add_matching_filter(struct change_table *to_modify,
struct repository* repo, struct ref_filter *filter)
{
struct ref_array matching_refs;
int i;
memset(&matching_refs, 0, sizeof(matching_refs));
filter_refs(&matching_refs, filter, filter->kind);
/**
* Determine the object id for the latest content commit for each change.
* Fetch the commit at the head of each change ref. If it's a normal commit,
* that's the commit we want. If it's a metacommit, locate its content parent
* and use that.
*/
for (i = 0; i < matching_refs.nr; i++) {
struct ref_array_item *item = matching_refs.items[i];
struct commit *commit = item->commit;
commit = lookup_commit_reference_gently(repo, &item->objectname, 1);
if (commit)
change_table_add(to_modify, item->refname, commit);
}
ref_array_clear(&matching_refs);
}
static int return_true_callback(const char *refname, void *cb_data)
{
return 1;
}
int change_table_has_change_referencing(struct change_table *changes,
const struct object_id *referenced_commit_id)
{
return for_each_change_referencing(changes, referenced_commit_id,
return_true_callback, NULL);
}
int for_each_change_referencing(struct change_table *table,
const struct object_id *referenced_commit_id, each_change_fn fn, void *cb_data)
{
const struct change_list *changes;
int i;
int retvalue;
struct commit_change_list_entry *entry;
entry = oidmap_get(&table->oid_to_metadata_index,
referenced_commit_id);
/* If this commit isn't referenced by any changes, it won't be in the map */
if (!entry)
return 0;
changes = &entry->changes;
if (!changes->first_refname)
return 0;
retvalue = fn(changes->first_refname, cb_data);
for (i = 0; retvalue == 0 && i < changes->additional_refnames.nr; i++)
retvalue = fn(changes->additional_refnames.items[i].string, cb_data);
return retvalue;
}
struct change_head* get_change_head(struct change_table *heads,
const char* refname)
{
struct string_list_item *item = string_list_lookup(
&heads->refname_to_change_head, refname);
if (!item)
return NULL;
return (struct change_head *)item->util;
}
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