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![Junio C Hamano](/assets/img/avatar_default.png)
Mark strtok() and strtok_r() to be banned. * tb/ban-strtok: banned.h: mark `strtok()` and `strtok_r()` as banned t/helper/test-json-writer.c: avoid using `strtok()` t/helper/test-oidmap.c: avoid using `strtok()` t/helper/test-hashmap.c: avoid using `strtok()` string-list: introduce `string_list_setlen()` string-list: multi-delimiter `string_list_split_in_place()`
1362 lines
38 KiB
C
1362 lines
38 KiB
C
#include "git-compat-util.h"
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#include "config.h"
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#include "environment.h"
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#include "hex.h"
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#include "notes.h"
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#include "object-name.h"
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#include "object-store.h"
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#include "blob.h"
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#include "tree.h"
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#include "utf8.h"
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#include "strbuf.h"
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#include "tree-walk.h"
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#include "string-list.h"
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#include "refs.h"
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/*
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* Use a non-balancing simple 16-tree structure with struct int_node as
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* internal nodes, and struct leaf_node as leaf nodes. Each int_node has a
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* 16-array of pointers to its children.
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* The bottom 2 bits of each pointer is used to identify the pointer type
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* - ptr & 3 == 0 - NULL pointer, assert(ptr == NULL)
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* - ptr & 3 == 1 - pointer to next internal node - cast to struct int_node *
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* - ptr & 3 == 2 - pointer to note entry - cast to struct leaf_node *
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* - ptr & 3 == 3 - pointer to subtree entry - cast to struct leaf_node *
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*
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* The root node is a statically allocated struct int_node.
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*/
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struct int_node {
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void *a[16];
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};
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/*
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* Leaf nodes come in two variants, note entries and subtree entries,
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* distinguished by the LSb of the leaf node pointer (see above).
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* As a note entry, the key is the SHA1 of the referenced object, and the
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* value is the SHA1 of the note object.
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* As a subtree entry, the key is the prefix SHA1 (w/trailing NULs) of the
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* referenced object, using the last byte of the key to store the length of
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* the prefix. The value is the SHA1 of the tree object containing the notes
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* subtree.
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*/
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struct leaf_node {
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struct object_id key_oid;
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struct object_id val_oid;
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};
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/*
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* A notes tree may contain entries that are not notes, and that do not follow
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* the naming conventions of notes. There are typically none/few of these, but
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* we still need to keep track of them. Keep a simple linked list sorted alpha-
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* betically on the non-note path. The list is populated when parsing tree
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* objects in load_subtree(), and the non-notes are correctly written back into
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* the tree objects produced by write_notes_tree().
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*/
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struct non_note {
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struct non_note *next; /* grounded (last->next == NULL) */
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char *path;
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unsigned int mode;
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struct object_id oid;
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};
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#define PTR_TYPE_NULL 0
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#define PTR_TYPE_INTERNAL 1
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#define PTR_TYPE_NOTE 2
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#define PTR_TYPE_SUBTREE 3
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#define GET_PTR_TYPE(ptr) ((uintptr_t) (ptr) & 3)
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#define CLR_PTR_TYPE(ptr) ((void *) ((uintptr_t) (ptr) & ~3))
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#define SET_PTR_TYPE(ptr, type) ((void *) ((uintptr_t) (ptr) | (type)))
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#define GET_NIBBLE(n, sha1) ((((sha1)[(n) >> 1]) >> ((~(n) & 0x01) << 2)) & 0x0f)
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#define KEY_INDEX (the_hash_algo->rawsz - 1)
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#define FANOUT_PATH_SEPARATORS (the_hash_algo->rawsz - 1)
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#define FANOUT_PATH_SEPARATORS_MAX ((GIT_MAX_HEXSZ / 2) - 1)
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#define SUBTREE_SHA1_PREFIXCMP(key_sha1, subtree_sha1) \
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(memcmp(key_sha1, subtree_sha1, subtree_sha1[KEY_INDEX]))
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struct notes_tree default_notes_tree;
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static struct string_list display_notes_refs = STRING_LIST_INIT_NODUP;
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static struct notes_tree **display_notes_trees;
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static void load_subtree(struct notes_tree *t, struct leaf_node *subtree,
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struct int_node *node, unsigned int n);
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/*
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* Search the tree until the appropriate location for the given key is found:
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* 1. Start at the root node, with n = 0
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* 2. If a[0] at the current level is a matching subtree entry, unpack that
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* subtree entry and remove it; restart search at the current level.
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* 3. Use the nth nibble of the key as an index into a:
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* - If a[n] is an int_node, recurse from #2 into that node and increment n
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* - If a matching subtree entry, unpack that subtree entry (and remove it);
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* restart search at the current level.
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* - Otherwise, we have found one of the following:
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* - a subtree entry which does not match the key
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* - a note entry which may or may not match the key
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* - an unused leaf node (NULL)
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* In any case, set *tree and *n, and return pointer to the tree location.
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*/
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static void **note_tree_search(struct notes_tree *t, struct int_node **tree,
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unsigned char *n, const unsigned char *key_sha1)
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{
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struct leaf_node *l;
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unsigned char i;
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void *p = (*tree)->a[0];
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if (GET_PTR_TYPE(p) == PTR_TYPE_SUBTREE) {
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l = (struct leaf_node *) CLR_PTR_TYPE(p);
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if (!SUBTREE_SHA1_PREFIXCMP(key_sha1, l->key_oid.hash)) {
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/* unpack tree and resume search */
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(*tree)->a[0] = NULL;
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load_subtree(t, l, *tree, *n);
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free(l);
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return note_tree_search(t, tree, n, key_sha1);
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}
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}
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i = GET_NIBBLE(*n, key_sha1);
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p = (*tree)->a[i];
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switch (GET_PTR_TYPE(p)) {
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case PTR_TYPE_INTERNAL:
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*tree = CLR_PTR_TYPE(p);
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(*n)++;
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return note_tree_search(t, tree, n, key_sha1);
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case PTR_TYPE_SUBTREE:
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l = (struct leaf_node *) CLR_PTR_TYPE(p);
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if (!SUBTREE_SHA1_PREFIXCMP(key_sha1, l->key_oid.hash)) {
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/* unpack tree and resume search */
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(*tree)->a[i] = NULL;
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load_subtree(t, l, *tree, *n);
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free(l);
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return note_tree_search(t, tree, n, key_sha1);
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}
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/* fall through */
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default:
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return &((*tree)->a[i]);
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}
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}
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/*
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* To find a leaf_node:
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* Search to the tree location appropriate for the given key:
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* If a note entry with matching key, return the note entry, else return NULL.
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*/
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static struct leaf_node *note_tree_find(struct notes_tree *t,
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struct int_node *tree, unsigned char n,
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const unsigned char *key_sha1)
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{
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void **p = note_tree_search(t, &tree, &n, key_sha1);
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if (GET_PTR_TYPE(*p) == PTR_TYPE_NOTE) {
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struct leaf_node *l = (struct leaf_node *) CLR_PTR_TYPE(*p);
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if (hasheq(key_sha1, l->key_oid.hash))
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return l;
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}
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return NULL;
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}
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/*
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* How to consolidate an int_node:
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* If there are > 1 non-NULL entries, give up and return non-zero.
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* Otherwise replace the int_node at the given index in the given parent node
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* with the only NOTE entry (or a NULL entry if no entries) from the given
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* tree, and return 0.
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*/
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static int note_tree_consolidate(struct int_node *tree,
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struct int_node *parent, unsigned char index)
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{
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unsigned int i;
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void *p = NULL;
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assert(tree && parent);
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assert(CLR_PTR_TYPE(parent->a[index]) == tree);
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for (i = 0; i < 16; i++) {
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if (GET_PTR_TYPE(tree->a[i]) != PTR_TYPE_NULL) {
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if (p) /* more than one entry */
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return -2;
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p = tree->a[i];
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}
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}
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if (p && (GET_PTR_TYPE(p) != PTR_TYPE_NOTE))
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return -2;
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/* replace tree with p in parent[index] */
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parent->a[index] = p;
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free(tree);
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return 0;
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}
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/*
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* To remove a leaf_node:
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* Search to the tree location appropriate for the given leaf_node's key:
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* - If location does not hold a matching entry, abort and do nothing.
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* - Copy the matching entry's value into the given entry.
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* - Replace the matching leaf_node with a NULL entry (and free the leaf_node).
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* - Consolidate int_nodes repeatedly, while walking up the tree towards root.
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*/
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static void note_tree_remove(struct notes_tree *t,
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struct int_node *tree, unsigned char n,
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struct leaf_node *entry)
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{
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struct leaf_node *l;
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struct int_node *parent_stack[GIT_MAX_RAWSZ];
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unsigned char i, j;
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void **p = note_tree_search(t, &tree, &n, entry->key_oid.hash);
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assert(GET_PTR_TYPE(entry) == 0); /* no type bits set */
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if (GET_PTR_TYPE(*p) != PTR_TYPE_NOTE)
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return; /* type mismatch, nothing to remove */
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l = (struct leaf_node *) CLR_PTR_TYPE(*p);
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if (!oideq(&l->key_oid, &entry->key_oid))
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return; /* key mismatch, nothing to remove */
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/* we have found a matching entry */
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oidcpy(&entry->val_oid, &l->val_oid);
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free(l);
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*p = SET_PTR_TYPE(NULL, PTR_TYPE_NULL);
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/* consolidate this tree level, and parent levels, if possible */
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if (!n)
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return; /* cannot consolidate top level */
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/* first, build stack of ancestors between root and current node */
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parent_stack[0] = t->root;
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for (i = 0; i < n; i++) {
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j = GET_NIBBLE(i, entry->key_oid.hash);
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parent_stack[i + 1] = CLR_PTR_TYPE(parent_stack[i]->a[j]);
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}
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assert(i == n && parent_stack[i] == tree);
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/* next, unwind stack until note_tree_consolidate() is done */
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while (i > 0 &&
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!note_tree_consolidate(parent_stack[i], parent_stack[i - 1],
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GET_NIBBLE(i - 1, entry->key_oid.hash)))
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i--;
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}
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/*
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* To insert a leaf_node:
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* Search to the tree location appropriate for the given leaf_node's key:
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* - If location is unused (NULL), store the tweaked pointer directly there
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* - If location holds a note entry that matches the note-to-be-inserted, then
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* combine the two notes (by calling the given combine_notes function).
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* - If location holds a note entry that matches the subtree-to-be-inserted,
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* then unpack the subtree-to-be-inserted into the location.
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* - If location holds a matching subtree entry, unpack the subtree at that
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* location, and restart the insert operation from that level.
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* - Else, create a new int_node, holding both the node-at-location and the
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* node-to-be-inserted, and store the new int_node into the location.
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*/
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static int note_tree_insert(struct notes_tree *t, struct int_node *tree,
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unsigned char n, struct leaf_node *entry, unsigned char type,
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combine_notes_fn combine_notes)
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{
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struct int_node *new_node;
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struct leaf_node *l;
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void **p = note_tree_search(t, &tree, &n, entry->key_oid.hash);
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int ret = 0;
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assert(GET_PTR_TYPE(entry) == 0); /* no type bits set */
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l = (struct leaf_node *) CLR_PTR_TYPE(*p);
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switch (GET_PTR_TYPE(*p)) {
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case PTR_TYPE_NULL:
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assert(!*p);
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if (is_null_oid(&entry->val_oid))
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free(entry);
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else
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*p = SET_PTR_TYPE(entry, type);
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return 0;
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case PTR_TYPE_NOTE:
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switch (type) {
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case PTR_TYPE_NOTE:
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if (oideq(&l->key_oid, &entry->key_oid)) {
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/* skip concatenation if l == entry */
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if (oideq(&l->val_oid, &entry->val_oid)) {
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free(entry);
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return 0;
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}
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ret = combine_notes(&l->val_oid,
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&entry->val_oid);
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if (!ret && is_null_oid(&l->val_oid))
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note_tree_remove(t, tree, n, entry);
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free(entry);
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return ret;
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}
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break;
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case PTR_TYPE_SUBTREE:
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if (!SUBTREE_SHA1_PREFIXCMP(l->key_oid.hash,
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entry->key_oid.hash)) {
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/* unpack 'entry' */
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load_subtree(t, entry, tree, n);
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free(entry);
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return 0;
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}
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break;
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}
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break;
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case PTR_TYPE_SUBTREE:
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if (!SUBTREE_SHA1_PREFIXCMP(entry->key_oid.hash, l->key_oid.hash)) {
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/* unpack 'l' and restart insert */
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*p = NULL;
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load_subtree(t, l, tree, n);
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free(l);
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return note_tree_insert(t, tree, n, entry, type,
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combine_notes);
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}
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break;
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}
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/* non-matching leaf_node */
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assert(GET_PTR_TYPE(*p) == PTR_TYPE_NOTE ||
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GET_PTR_TYPE(*p) == PTR_TYPE_SUBTREE);
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if (is_null_oid(&entry->val_oid)) { /* skip insertion of empty note */
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free(entry);
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return 0;
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}
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new_node = (struct int_node *) xcalloc(1, sizeof(struct int_node));
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ret = note_tree_insert(t, new_node, n + 1, l, GET_PTR_TYPE(*p),
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combine_notes);
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if (ret)
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return ret;
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*p = SET_PTR_TYPE(new_node, PTR_TYPE_INTERNAL);
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return note_tree_insert(t, new_node, n + 1, entry, type, combine_notes);
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}
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/* Free the entire notes data contained in the given tree */
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static void note_tree_free(struct int_node *tree)
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{
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unsigned int i;
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for (i = 0; i < 16; i++) {
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void *p = tree->a[i];
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switch (GET_PTR_TYPE(p)) {
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case PTR_TYPE_INTERNAL:
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note_tree_free(CLR_PTR_TYPE(p));
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/* fall through */
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case PTR_TYPE_NOTE:
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case PTR_TYPE_SUBTREE:
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free(CLR_PTR_TYPE(p));
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}
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}
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}
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static int non_note_cmp(const struct non_note *a, const struct non_note *b)
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{
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return strcmp(a->path, b->path);
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}
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/* note: takes ownership of path string */
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static void add_non_note(struct notes_tree *t, char *path,
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unsigned int mode, const unsigned char *sha1)
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{
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struct non_note *p = t->prev_non_note, *n;
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n = (struct non_note *) xmalloc(sizeof(struct non_note));
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n->next = NULL;
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n->path = path;
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n->mode = mode;
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oidread(&n->oid, sha1);
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t->prev_non_note = n;
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if (!t->first_non_note) {
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t->first_non_note = n;
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return;
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}
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if (non_note_cmp(p, n) < 0)
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; /* do nothing */
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else if (non_note_cmp(t->first_non_note, n) <= 0)
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p = t->first_non_note;
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else {
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/* n sorts before t->first_non_note */
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n->next = t->first_non_note;
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t->first_non_note = n;
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return;
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}
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/* n sorts equal or after p */
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while (p->next && non_note_cmp(p->next, n) <= 0)
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p = p->next;
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if (non_note_cmp(p, n) == 0) { /* n ~= p; overwrite p with n */
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assert(strcmp(p->path, n->path) == 0);
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p->mode = n->mode;
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oidcpy(&p->oid, &n->oid);
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free(n);
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t->prev_non_note = p;
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return;
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}
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/* n sorts between p and p->next */
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n->next = p->next;
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p->next = n;
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}
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static void load_subtree(struct notes_tree *t, struct leaf_node *subtree,
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struct int_node *node, unsigned int n)
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{
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struct object_id object_oid;
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size_t prefix_len;
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void *buf;
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struct tree_desc desc;
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struct name_entry entry;
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const unsigned hashsz = the_hash_algo->rawsz;
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buf = fill_tree_descriptor(the_repository, &desc, &subtree->val_oid);
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if (!buf)
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die("Could not read %s for notes-index",
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oid_to_hex(&subtree->val_oid));
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prefix_len = subtree->key_oid.hash[KEY_INDEX];
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if (prefix_len >= hashsz)
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BUG("prefix_len (%"PRIuMAX") is out of range", (uintmax_t)prefix_len);
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if (prefix_len * 2 < n)
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BUG("prefix_len (%"PRIuMAX") is too small", (uintmax_t)prefix_len);
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memcpy(object_oid.hash, subtree->key_oid.hash, prefix_len);
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while (tree_entry(&desc, &entry)) {
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unsigned char type;
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struct leaf_node *l;
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size_t path_len = strlen(entry.path);
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if (path_len == 2 * (hashsz - prefix_len)) {
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/* This is potentially the remainder of the SHA-1 */
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if (!S_ISREG(entry.mode))
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/* notes must be blobs */
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goto handle_non_note;
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if (hex_to_bytes(object_oid.hash + prefix_len, entry.path,
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hashsz - prefix_len))
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goto handle_non_note; /* entry.path is not a SHA1 */
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type = PTR_TYPE_NOTE;
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} else if (path_len == 2) {
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/* This is potentially an internal node */
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size_t len = prefix_len;
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if (!S_ISDIR(entry.mode))
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/* internal nodes must be trees */
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goto handle_non_note;
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if (hex_to_bytes(object_oid.hash + len++, entry.path, 1))
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goto handle_non_note; /* entry.path is not a SHA1 */
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/*
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* Pad the rest of the SHA-1 with zeros,
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* except for the last byte, where we write
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* the length:
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*/
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memset(object_oid.hash + len, 0, hashsz - len - 1);
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object_oid.hash[KEY_INDEX] = (unsigned char)len;
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type = PTR_TYPE_SUBTREE;
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} else {
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/* This can't be part of a note */
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goto handle_non_note;
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}
|
|
|
|
CALLOC_ARRAY(l, 1);
|
|
oidcpy(&l->key_oid, &object_oid);
|
|
oidcpy(&l->val_oid, &entry.oid);
|
|
oid_set_algo(&l->key_oid, the_hash_algo);
|
|
oid_set_algo(&l->val_oid, the_hash_algo);
|
|
if (note_tree_insert(t, node, n, l, type,
|
|
combine_notes_concatenate))
|
|
die("Failed to load %s %s into notes tree "
|
|
"from %s",
|
|
type == PTR_TYPE_NOTE ? "note" : "subtree",
|
|
oid_to_hex(&object_oid), t->ref);
|
|
|
|
continue;
|
|
|
|
handle_non_note:
|
|
/*
|
|
* Determine full path for this non-note entry. The
|
|
* filename is already found in entry.path, but the
|
|
* directory part of the path must be deduced from the
|
|
* subtree containing this entry based on our
|
|
* knowledge that the overall notes tree follows a
|
|
* strict byte-based progressive fanout structure
|
|
* (i.e. using 2/38, 2/2/36, etc. fanouts).
|
|
*/
|
|
{
|
|
struct strbuf non_note_path = STRBUF_INIT;
|
|
const char *q = oid_to_hex(&subtree->key_oid);
|
|
size_t i;
|
|
for (i = 0; i < prefix_len; i++) {
|
|
strbuf_addch(&non_note_path, *q++);
|
|
strbuf_addch(&non_note_path, *q++);
|
|
strbuf_addch(&non_note_path, '/');
|
|
}
|
|
strbuf_addstr(&non_note_path, entry.path);
|
|
oid_set_algo(&entry.oid, the_hash_algo);
|
|
add_non_note(t, strbuf_detach(&non_note_path, NULL),
|
|
entry.mode, entry.oid.hash);
|
|
}
|
|
}
|
|
free(buf);
|
|
}
|
|
|
|
/*
|
|
* Determine optimal on-disk fanout for this part of the notes tree
|
|
*
|
|
* Given a (sub)tree and the level in the internal tree structure, determine
|
|
* whether or not the given existing fanout should be expanded for this
|
|
* (sub)tree.
|
|
*
|
|
* Values of the 'fanout' variable:
|
|
* - 0: No fanout (all notes are stored directly in the root notes tree)
|
|
* - 1: 2/38 fanout
|
|
* - 2: 2/2/36 fanout
|
|
* - 3: 2/2/2/34 fanout
|
|
* etc.
|
|
*/
|
|
static unsigned char determine_fanout(struct int_node *tree, unsigned char n,
|
|
unsigned char fanout)
|
|
{
|
|
/*
|
|
* The following is a simple heuristic that works well in practice:
|
|
* For each even-numbered 16-tree level (remember that each on-disk
|
|
* fanout level corresponds to _two_ 16-tree levels), peek at all 16
|
|
* entries at that tree level. If all of them are either int_nodes or
|
|
* subtree entries, then there are likely plenty of notes below this
|
|
* level, so we return an incremented fanout.
|
|
*/
|
|
unsigned int i;
|
|
if ((n % 2) || (n > 2 * fanout))
|
|
return fanout;
|
|
for (i = 0; i < 16; i++) {
|
|
switch (GET_PTR_TYPE(tree->a[i])) {
|
|
case PTR_TYPE_SUBTREE:
|
|
case PTR_TYPE_INTERNAL:
|
|
continue;
|
|
default:
|
|
return fanout;
|
|
}
|
|
}
|
|
return fanout + 1;
|
|
}
|
|
|
|
/* hex oid + '/' between each pair of hex digits + NUL */
|
|
#define FANOUT_PATH_MAX GIT_MAX_HEXSZ + FANOUT_PATH_SEPARATORS_MAX + 1
|
|
|
|
static void construct_path_with_fanout(const unsigned char *hash,
|
|
unsigned char fanout, char *path)
|
|
{
|
|
unsigned int i = 0, j = 0;
|
|
const char *hex_hash = hash_to_hex(hash);
|
|
assert(fanout < the_hash_algo->rawsz);
|
|
while (fanout) {
|
|
path[i++] = hex_hash[j++];
|
|
path[i++] = hex_hash[j++];
|
|
path[i++] = '/';
|
|
fanout--;
|
|
}
|
|
xsnprintf(path + i, FANOUT_PATH_MAX - i, "%s", hex_hash + j);
|
|
}
|
|
|
|
static int for_each_note_helper(struct notes_tree *t, struct int_node *tree,
|
|
unsigned char n, unsigned char fanout, int flags,
|
|
each_note_fn fn, void *cb_data)
|
|
{
|
|
unsigned int i;
|
|
void *p;
|
|
int ret = 0;
|
|
struct leaf_node *l;
|
|
static char path[FANOUT_PATH_MAX];
|
|
|
|
fanout = determine_fanout(tree, n, fanout);
|
|
for (i = 0; i < 16; i++) {
|
|
redo:
|
|
p = tree->a[i];
|
|
switch (GET_PTR_TYPE(p)) {
|
|
case PTR_TYPE_INTERNAL:
|
|
/* recurse into int_node */
|
|
ret = for_each_note_helper(t, CLR_PTR_TYPE(p), n + 1,
|
|
fanout, flags, fn, cb_data);
|
|
break;
|
|
case PTR_TYPE_SUBTREE:
|
|
l = (struct leaf_node *) CLR_PTR_TYPE(p);
|
|
/*
|
|
* Subtree entries in the note tree represent parts of
|
|
* the note tree that have not yet been explored. There
|
|
* is a direct relationship between subtree entries at
|
|
* level 'n' in the tree, and the 'fanout' variable:
|
|
* Subtree entries at level 'n < 2 * fanout' should be
|
|
* preserved, since they correspond exactly to a fanout
|
|
* directory in the on-disk structure. However, subtree
|
|
* entries at level 'n >= 2 * fanout' should NOT be
|
|
* preserved, but rather consolidated into the above
|
|
* notes tree level. We achieve this by unconditionally
|
|
* unpacking subtree entries that exist below the
|
|
* threshold level at 'n = 2 * fanout'.
|
|
*/
|
|
if (n < 2 * fanout &&
|
|
flags & FOR_EACH_NOTE_YIELD_SUBTREES) {
|
|
/* invoke callback with subtree */
|
|
unsigned int path_len =
|
|
l->key_oid.hash[KEY_INDEX] * 2 + fanout;
|
|
assert(path_len < FANOUT_PATH_MAX - 1);
|
|
construct_path_with_fanout(l->key_oid.hash,
|
|
fanout,
|
|
path);
|
|
/* Create trailing slash, if needed */
|
|
if (path[path_len - 1] != '/')
|
|
path[path_len++] = '/';
|
|
path[path_len] = '\0';
|
|
ret = fn(&l->key_oid, &l->val_oid,
|
|
path,
|
|
cb_data);
|
|
}
|
|
if (n >= 2 * fanout ||
|
|
!(flags & FOR_EACH_NOTE_DONT_UNPACK_SUBTREES)) {
|
|
/* unpack subtree and resume traversal */
|
|
tree->a[i] = NULL;
|
|
load_subtree(t, l, tree, n);
|
|
free(l);
|
|
goto redo;
|
|
}
|
|
break;
|
|
case PTR_TYPE_NOTE:
|
|
l = (struct leaf_node *) CLR_PTR_TYPE(p);
|
|
construct_path_with_fanout(l->key_oid.hash, fanout,
|
|
path);
|
|
ret = fn(&l->key_oid, &l->val_oid, path,
|
|
cb_data);
|
|
break;
|
|
}
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct tree_write_stack {
|
|
struct tree_write_stack *next;
|
|
struct strbuf buf;
|
|
char path[2]; /* path to subtree in next, if any */
|
|
};
|
|
|
|
static inline int matches_tree_write_stack(struct tree_write_stack *tws,
|
|
const char *full_path)
|
|
{
|
|
return full_path[0] == tws->path[0] &&
|
|
full_path[1] == tws->path[1] &&
|
|
full_path[2] == '/';
|
|
}
|
|
|
|
static void write_tree_entry(struct strbuf *buf, unsigned int mode,
|
|
const char *path, unsigned int path_len, const
|
|
unsigned char *hash)
|
|
{
|
|
strbuf_addf(buf, "%o %.*s%c", mode, path_len, path, '\0');
|
|
strbuf_add(buf, hash, the_hash_algo->rawsz);
|
|
}
|
|
|
|
static void tree_write_stack_init_subtree(struct tree_write_stack *tws,
|
|
const char *path)
|
|
{
|
|
struct tree_write_stack *n;
|
|
assert(!tws->next);
|
|
assert(tws->path[0] == '\0' && tws->path[1] == '\0');
|
|
n = (struct tree_write_stack *)
|
|
xmalloc(sizeof(struct tree_write_stack));
|
|
n->next = NULL;
|
|
strbuf_init(&n->buf, 256 * (32 + the_hash_algo->hexsz)); /* assume 256 entries per tree */
|
|
n->path[0] = n->path[1] = '\0';
|
|
tws->next = n;
|
|
tws->path[0] = path[0];
|
|
tws->path[1] = path[1];
|
|
}
|
|
|
|
static int tree_write_stack_finish_subtree(struct tree_write_stack *tws)
|
|
{
|
|
int ret;
|
|
struct tree_write_stack *n = tws->next;
|
|
struct object_id s;
|
|
if (n) {
|
|
ret = tree_write_stack_finish_subtree(n);
|
|
if (ret)
|
|
return ret;
|
|
ret = write_object_file(n->buf.buf, n->buf.len, OBJ_TREE, &s);
|
|
if (ret)
|
|
return ret;
|
|
strbuf_release(&n->buf);
|
|
free(n);
|
|
tws->next = NULL;
|
|
write_tree_entry(&tws->buf, 040000, tws->path, 2, s.hash);
|
|
tws->path[0] = tws->path[1] = '\0';
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int write_each_note_helper(struct tree_write_stack *tws,
|
|
const char *path, unsigned int mode,
|
|
const struct object_id *oid)
|
|
{
|
|
size_t path_len = strlen(path);
|
|
unsigned int n = 0;
|
|
int ret;
|
|
|
|
/* Determine common part of tree write stack */
|
|
while (tws && 3 * n < path_len &&
|
|
matches_tree_write_stack(tws, path + 3 * n)) {
|
|
n++;
|
|
tws = tws->next;
|
|
}
|
|
|
|
/* tws point to last matching tree_write_stack entry */
|
|
ret = tree_write_stack_finish_subtree(tws);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Start subtrees needed to satisfy path */
|
|
while (3 * n + 2 < path_len && path[3 * n + 2] == '/') {
|
|
tree_write_stack_init_subtree(tws, path + 3 * n);
|
|
n++;
|
|
tws = tws->next;
|
|
}
|
|
|
|
/* There should be no more directory components in the given path */
|
|
assert(memchr(path + 3 * n, '/', path_len - (3 * n)) == NULL);
|
|
|
|
/* Finally add given entry to the current tree object */
|
|
write_tree_entry(&tws->buf, mode, path + 3 * n, path_len - (3 * n),
|
|
oid->hash);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct write_each_note_data {
|
|
struct tree_write_stack *root;
|
|
struct non_note **nn_list;
|
|
struct non_note *nn_prev;
|
|
};
|
|
|
|
static int write_each_non_note_until(const char *note_path,
|
|
struct write_each_note_data *d)
|
|
{
|
|
struct non_note *p = d->nn_prev;
|
|
struct non_note *n = p ? p->next : *d->nn_list;
|
|
int cmp = 0, ret;
|
|
while (n && (!note_path || (cmp = strcmp(n->path, note_path)) <= 0)) {
|
|
if (note_path && cmp == 0)
|
|
; /* do nothing, prefer note to non-note */
|
|
else {
|
|
ret = write_each_note_helper(d->root, n->path, n->mode,
|
|
&n->oid);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
p = n;
|
|
n = n->next;
|
|
}
|
|
d->nn_prev = p;
|
|
return 0;
|
|
}
|
|
|
|
static int write_each_note(const struct object_id *object_oid UNUSED,
|
|
const struct object_id *note_oid, char *note_path,
|
|
void *cb_data)
|
|
{
|
|
struct write_each_note_data *d =
|
|
(struct write_each_note_data *) cb_data;
|
|
size_t note_path_len = strlen(note_path);
|
|
unsigned int mode = 0100644;
|
|
|
|
if (note_path[note_path_len - 1] == '/') {
|
|
/* subtree entry */
|
|
note_path_len--;
|
|
note_path[note_path_len] = '\0';
|
|
mode = 040000;
|
|
}
|
|
assert(note_path_len <= GIT_MAX_HEXSZ + FANOUT_PATH_SEPARATORS);
|
|
|
|
/* Weave non-note entries into note entries */
|
|
return write_each_non_note_until(note_path, d) ||
|
|
write_each_note_helper(d->root, note_path, mode, note_oid);
|
|
}
|
|
|
|
struct note_delete_list {
|
|
struct note_delete_list *next;
|
|
const unsigned char *sha1;
|
|
};
|
|
|
|
static int prune_notes_helper(const struct object_id *object_oid,
|
|
const struct object_id *note_oid UNUSED,
|
|
char *note_path UNUSED,
|
|
void *cb_data)
|
|
{
|
|
struct note_delete_list **l = (struct note_delete_list **) cb_data;
|
|
struct note_delete_list *n;
|
|
|
|
if (repo_has_object_file(the_repository, object_oid))
|
|
return 0; /* nothing to do for this note */
|
|
|
|
/* failed to find object => prune this note */
|
|
n = (struct note_delete_list *) xmalloc(sizeof(*n));
|
|
n->next = *l;
|
|
n->sha1 = object_oid->hash;
|
|
*l = n;
|
|
return 0;
|
|
}
|
|
|
|
int combine_notes_concatenate(struct object_id *cur_oid,
|
|
const struct object_id *new_oid)
|
|
{
|
|
char *cur_msg = NULL, *new_msg = NULL, *buf;
|
|
unsigned long cur_len, new_len, buf_len;
|
|
enum object_type cur_type, new_type;
|
|
int ret;
|
|
|
|
/* read in both note blob objects */
|
|
if (!is_null_oid(new_oid))
|
|
new_msg = repo_read_object_file(the_repository, new_oid,
|
|
&new_type, &new_len);
|
|
if (!new_msg || !new_len || new_type != OBJ_BLOB) {
|
|
free(new_msg);
|
|
return 0;
|
|
}
|
|
if (!is_null_oid(cur_oid))
|
|
cur_msg = repo_read_object_file(the_repository, cur_oid,
|
|
&cur_type, &cur_len);
|
|
if (!cur_msg || !cur_len || cur_type != OBJ_BLOB) {
|
|
free(cur_msg);
|
|
free(new_msg);
|
|
oidcpy(cur_oid, new_oid);
|
|
return 0;
|
|
}
|
|
|
|
/* we will separate the notes by two newlines anyway */
|
|
if (cur_msg[cur_len - 1] == '\n')
|
|
cur_len--;
|
|
|
|
/* concatenate cur_msg and new_msg into buf */
|
|
buf_len = cur_len + 2 + new_len;
|
|
buf = (char *) xmalloc(buf_len);
|
|
memcpy(buf, cur_msg, cur_len);
|
|
buf[cur_len] = '\n';
|
|
buf[cur_len + 1] = '\n';
|
|
memcpy(buf + cur_len + 2, new_msg, new_len);
|
|
free(cur_msg);
|
|
free(new_msg);
|
|
|
|
/* create a new blob object from buf */
|
|
ret = write_object_file(buf, buf_len, OBJ_BLOB, cur_oid);
|
|
free(buf);
|
|
return ret;
|
|
}
|
|
|
|
int combine_notes_overwrite(struct object_id *cur_oid,
|
|
const struct object_id *new_oid)
|
|
{
|
|
oidcpy(cur_oid, new_oid);
|
|
return 0;
|
|
}
|
|
|
|
int combine_notes_ignore(struct object_id *cur_oid UNUSED,
|
|
const struct object_id *new_oid UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Add the lines from the named object to list, with trailing
|
|
* newlines removed.
|
|
*/
|
|
static int string_list_add_note_lines(struct string_list *list,
|
|
const struct object_id *oid)
|
|
{
|
|
char *data;
|
|
unsigned long len;
|
|
enum object_type t;
|
|
|
|
if (is_null_oid(oid))
|
|
return 0;
|
|
|
|
/* read_sha1_file NUL-terminates */
|
|
data = repo_read_object_file(the_repository, oid, &t, &len);
|
|
if (t != OBJ_BLOB || !data || !len) {
|
|
free(data);
|
|
return t != OBJ_BLOB || !data;
|
|
}
|
|
|
|
/*
|
|
* If the last line of the file is EOL-terminated, this will
|
|
* add an empty string to the list. But it will be removed
|
|
* later, along with any empty strings that came from empty
|
|
* lines within the file.
|
|
*/
|
|
string_list_split(list, data, '\n', -1);
|
|
free(data);
|
|
return 0;
|
|
}
|
|
|
|
static int string_list_join_lines_helper(struct string_list_item *item,
|
|
void *cb_data)
|
|
{
|
|
struct strbuf *buf = cb_data;
|
|
strbuf_addstr(buf, item->string);
|
|
strbuf_addch(buf, '\n');
|
|
return 0;
|
|
}
|
|
|
|
int combine_notes_cat_sort_uniq(struct object_id *cur_oid,
|
|
const struct object_id *new_oid)
|
|
{
|
|
struct string_list sort_uniq_list = STRING_LIST_INIT_DUP;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
int ret = 1;
|
|
|
|
/* read both note blob objects into unique_lines */
|
|
if (string_list_add_note_lines(&sort_uniq_list, cur_oid))
|
|
goto out;
|
|
if (string_list_add_note_lines(&sort_uniq_list, new_oid))
|
|
goto out;
|
|
string_list_remove_empty_items(&sort_uniq_list, 0);
|
|
string_list_sort(&sort_uniq_list);
|
|
string_list_remove_duplicates(&sort_uniq_list, 0);
|
|
|
|
/* create a new blob object from sort_uniq_list */
|
|
if (for_each_string_list(&sort_uniq_list,
|
|
string_list_join_lines_helper, &buf))
|
|
goto out;
|
|
|
|
ret = write_object_file(buf.buf, buf.len, OBJ_BLOB, cur_oid);
|
|
|
|
out:
|
|
strbuf_release(&buf);
|
|
string_list_clear(&sort_uniq_list, 0);
|
|
return ret;
|
|
}
|
|
|
|
static int string_list_add_one_ref(const char *refname,
|
|
const struct object_id *oid UNUSED,
|
|
int flag UNUSED, void *cb)
|
|
{
|
|
struct string_list *refs = cb;
|
|
if (!unsorted_string_list_has_string(refs, refname))
|
|
string_list_append(refs, refname);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The list argument must have strdup_strings set on it.
|
|
*/
|
|
void string_list_add_refs_by_glob(struct string_list *list, const char *glob)
|
|
{
|
|
assert(list->strdup_strings);
|
|
if (has_glob_specials(glob)) {
|
|
for_each_glob_ref(string_list_add_one_ref, glob, list);
|
|
} else {
|
|
struct object_id oid;
|
|
if (repo_get_oid(the_repository, glob, &oid))
|
|
warning("notes ref %s is invalid", glob);
|
|
if (!unsorted_string_list_has_string(list, glob))
|
|
string_list_append(list, glob);
|
|
}
|
|
}
|
|
|
|
void string_list_add_refs_from_colon_sep(struct string_list *list,
|
|
const char *globs)
|
|
{
|
|
struct string_list split = STRING_LIST_INIT_NODUP;
|
|
char *globs_copy = xstrdup(globs);
|
|
int i;
|
|
|
|
string_list_split_in_place(&split, globs_copy, ":", -1);
|
|
string_list_remove_empty_items(&split, 0);
|
|
|
|
for (i = 0; i < split.nr; i++)
|
|
string_list_add_refs_by_glob(list, split.items[i].string);
|
|
|
|
string_list_clear(&split, 0);
|
|
free(globs_copy);
|
|
}
|
|
|
|
static int notes_display_config(const char *k, const char *v, void *cb)
|
|
{
|
|
int *load_refs = cb;
|
|
|
|
if (*load_refs && !strcmp(k, "notes.displayref")) {
|
|
if (!v)
|
|
return config_error_nonbool(k);
|
|
string_list_add_refs_by_glob(&display_notes_refs, v);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
const char *default_notes_ref(void)
|
|
{
|
|
const char *notes_ref = NULL;
|
|
if (!notes_ref)
|
|
notes_ref = getenv(GIT_NOTES_REF_ENVIRONMENT);
|
|
if (!notes_ref)
|
|
notes_ref = notes_ref_name; /* value of core.notesRef config */
|
|
if (!notes_ref)
|
|
notes_ref = GIT_NOTES_DEFAULT_REF;
|
|
return notes_ref;
|
|
}
|
|
|
|
void init_notes(struct notes_tree *t, const char *notes_ref,
|
|
combine_notes_fn combine_notes, int flags)
|
|
{
|
|
struct object_id oid, object_oid;
|
|
unsigned short mode;
|
|
struct leaf_node root_tree;
|
|
|
|
if (!t)
|
|
t = &default_notes_tree;
|
|
assert(!t->initialized);
|
|
|
|
if (!notes_ref)
|
|
notes_ref = default_notes_ref();
|
|
update_ref_namespace(NAMESPACE_NOTES, xstrdup(notes_ref));
|
|
|
|
if (!combine_notes)
|
|
combine_notes = combine_notes_concatenate;
|
|
|
|
t->root = (struct int_node *) xcalloc(1, sizeof(struct int_node));
|
|
t->first_non_note = NULL;
|
|
t->prev_non_note = NULL;
|
|
t->ref = xstrdup(notes_ref);
|
|
t->update_ref = (flags & NOTES_INIT_WRITABLE) ? t->ref : NULL;
|
|
t->combine_notes = combine_notes;
|
|
t->initialized = 1;
|
|
t->dirty = 0;
|
|
|
|
if (flags & NOTES_INIT_EMPTY ||
|
|
repo_get_oid_treeish(the_repository, notes_ref, &object_oid))
|
|
return;
|
|
if (flags & NOTES_INIT_WRITABLE && read_ref(notes_ref, &object_oid))
|
|
die("Cannot use notes ref %s", notes_ref);
|
|
if (get_tree_entry(the_repository, &object_oid, "", &oid, &mode))
|
|
die("Failed to read notes tree referenced by %s (%s)",
|
|
notes_ref, oid_to_hex(&object_oid));
|
|
|
|
oidclr(&root_tree.key_oid);
|
|
oidcpy(&root_tree.val_oid, &oid);
|
|
load_subtree(t, &root_tree, t->root, 0);
|
|
}
|
|
|
|
struct notes_tree **load_notes_trees(struct string_list *refs, int flags)
|
|
{
|
|
struct string_list_item *item;
|
|
int counter = 0;
|
|
struct notes_tree **trees;
|
|
ALLOC_ARRAY(trees, refs->nr + 1);
|
|
for_each_string_list_item(item, refs) {
|
|
struct notes_tree *t = xcalloc(1, sizeof(struct notes_tree));
|
|
init_notes(t, item->string, combine_notes_ignore, flags);
|
|
trees[counter++] = t;
|
|
}
|
|
trees[counter] = NULL;
|
|
return trees;
|
|
}
|
|
|
|
void init_display_notes(struct display_notes_opt *opt)
|
|
{
|
|
memset(opt, 0, sizeof(*opt));
|
|
opt->use_default_notes = -1;
|
|
}
|
|
|
|
void enable_default_display_notes(struct display_notes_opt *opt, int *show_notes)
|
|
{
|
|
opt->use_default_notes = 1;
|
|
*show_notes = 1;
|
|
}
|
|
|
|
void enable_ref_display_notes(struct display_notes_opt *opt, int *show_notes,
|
|
const char *ref) {
|
|
struct strbuf buf = STRBUF_INIT;
|
|
strbuf_addstr(&buf, ref);
|
|
expand_notes_ref(&buf);
|
|
string_list_append(&opt->extra_notes_refs,
|
|
strbuf_detach(&buf, NULL));
|
|
*show_notes = 1;
|
|
}
|
|
|
|
void disable_display_notes(struct display_notes_opt *opt, int *show_notes)
|
|
{
|
|
opt->use_default_notes = -1;
|
|
/* we have been strdup'ing ourselves, so trick
|
|
* string_list into free()ing strings */
|
|
opt->extra_notes_refs.strdup_strings = 1;
|
|
string_list_clear(&opt->extra_notes_refs, 0);
|
|
opt->extra_notes_refs.strdup_strings = 0;
|
|
*show_notes = 0;
|
|
}
|
|
|
|
void load_display_notes(struct display_notes_opt *opt)
|
|
{
|
|
char *display_ref_env;
|
|
int load_config_refs = 0;
|
|
display_notes_refs.strdup_strings = 1;
|
|
|
|
assert(!display_notes_trees);
|
|
|
|
if (!opt || opt->use_default_notes > 0 ||
|
|
(opt->use_default_notes == -1 && !opt->extra_notes_refs.nr)) {
|
|
string_list_append(&display_notes_refs, default_notes_ref());
|
|
display_ref_env = getenv(GIT_NOTES_DISPLAY_REF_ENVIRONMENT);
|
|
if (display_ref_env) {
|
|
string_list_add_refs_from_colon_sep(&display_notes_refs,
|
|
display_ref_env);
|
|
load_config_refs = 0;
|
|
} else
|
|
load_config_refs = 1;
|
|
}
|
|
|
|
git_config(notes_display_config, &load_config_refs);
|
|
|
|
if (opt) {
|
|
struct string_list_item *item;
|
|
for_each_string_list_item(item, &opt->extra_notes_refs)
|
|
string_list_add_refs_by_glob(&display_notes_refs,
|
|
item->string);
|
|
}
|
|
|
|
display_notes_trees = load_notes_trees(&display_notes_refs, 0);
|
|
string_list_clear(&display_notes_refs, 0);
|
|
}
|
|
|
|
int add_note(struct notes_tree *t, const struct object_id *object_oid,
|
|
const struct object_id *note_oid, combine_notes_fn combine_notes)
|
|
{
|
|
struct leaf_node *l;
|
|
|
|
if (!t)
|
|
t = &default_notes_tree;
|
|
assert(t->initialized);
|
|
t->dirty = 1;
|
|
if (!combine_notes)
|
|
combine_notes = t->combine_notes;
|
|
l = (struct leaf_node *) xmalloc(sizeof(struct leaf_node));
|
|
oidcpy(&l->key_oid, object_oid);
|
|
oidcpy(&l->val_oid, note_oid);
|
|
return note_tree_insert(t, t->root, 0, l, PTR_TYPE_NOTE, combine_notes);
|
|
}
|
|
|
|
int remove_note(struct notes_tree *t, const unsigned char *object_sha1)
|
|
{
|
|
struct leaf_node l;
|
|
|
|
if (!t)
|
|
t = &default_notes_tree;
|
|
assert(t->initialized);
|
|
oidread(&l.key_oid, object_sha1);
|
|
oidclr(&l.val_oid);
|
|
note_tree_remove(t, t->root, 0, &l);
|
|
if (is_null_oid(&l.val_oid)) /* no note was removed */
|
|
return 1;
|
|
t->dirty = 1;
|
|
return 0;
|
|
}
|
|
|
|
const struct object_id *get_note(struct notes_tree *t,
|
|
const struct object_id *oid)
|
|
{
|
|
struct leaf_node *found;
|
|
|
|
if (!t)
|
|
t = &default_notes_tree;
|
|
assert(t->initialized);
|
|
found = note_tree_find(t, t->root, 0, oid->hash);
|
|
return found ? &found->val_oid : NULL;
|
|
}
|
|
|
|
int for_each_note(struct notes_tree *t, int flags, each_note_fn fn,
|
|
void *cb_data)
|
|
{
|
|
if (!t)
|
|
t = &default_notes_tree;
|
|
assert(t->initialized);
|
|
return for_each_note_helper(t, t->root, 0, 0, flags, fn, cb_data);
|
|
}
|
|
|
|
int write_notes_tree(struct notes_tree *t, struct object_id *result)
|
|
{
|
|
struct tree_write_stack root;
|
|
struct write_each_note_data cb_data;
|
|
int ret;
|
|
int flags;
|
|
|
|
if (!t)
|
|
t = &default_notes_tree;
|
|
assert(t->initialized);
|
|
|
|
/* Prepare for traversal of current notes tree */
|
|
root.next = NULL; /* last forward entry in list is grounded */
|
|
strbuf_init(&root.buf, 256 * (32 + the_hash_algo->hexsz)); /* assume 256 entries */
|
|
root.path[0] = root.path[1] = '\0';
|
|
cb_data.root = &root;
|
|
cb_data.nn_list = &(t->first_non_note);
|
|
cb_data.nn_prev = NULL;
|
|
|
|
/* Write tree objects representing current notes tree */
|
|
flags = FOR_EACH_NOTE_DONT_UNPACK_SUBTREES |
|
|
FOR_EACH_NOTE_YIELD_SUBTREES;
|
|
ret = for_each_note(t, flags, write_each_note, &cb_data) ||
|
|
write_each_non_note_until(NULL, &cb_data) ||
|
|
tree_write_stack_finish_subtree(&root) ||
|
|
write_object_file(root.buf.buf, root.buf.len, OBJ_TREE, result);
|
|
strbuf_release(&root.buf);
|
|
return ret;
|
|
}
|
|
|
|
void prune_notes(struct notes_tree *t, int flags)
|
|
{
|
|
struct note_delete_list *l = NULL;
|
|
|
|
if (!t)
|
|
t = &default_notes_tree;
|
|
assert(t->initialized);
|
|
|
|
for_each_note(t, 0, prune_notes_helper, &l);
|
|
|
|
while (l) {
|
|
if (flags & NOTES_PRUNE_VERBOSE)
|
|
printf("%s\n", hash_to_hex(l->sha1));
|
|
if (!(flags & NOTES_PRUNE_DRYRUN))
|
|
remove_note(t, l->sha1);
|
|
l = l->next;
|
|
}
|
|
}
|
|
|
|
void free_notes(struct notes_tree *t)
|
|
{
|
|
if (!t)
|
|
t = &default_notes_tree;
|
|
if (t->root)
|
|
note_tree_free(t->root);
|
|
free(t->root);
|
|
while (t->first_non_note) {
|
|
t->prev_non_note = t->first_non_note->next;
|
|
free(t->first_non_note->path);
|
|
free(t->first_non_note);
|
|
t->first_non_note = t->prev_non_note;
|
|
}
|
|
free(t->ref);
|
|
memset(t, 0, sizeof(struct notes_tree));
|
|
}
|
|
|
|
/*
|
|
* Fill the given strbuf with the notes associated with the given object.
|
|
*
|
|
* If the given notes_tree structure is not initialized, it will be auto-
|
|
* initialized to the default value (see documentation for init_notes() above).
|
|
* If the given notes_tree is NULL, the internal/default notes_tree will be
|
|
* used instead.
|
|
*
|
|
* (raw != 0) gives the %N userformat; otherwise, the note message is given
|
|
* for human consumption.
|
|
*/
|
|
static void format_note(struct notes_tree *t, const struct object_id *object_oid,
|
|
struct strbuf *sb, const char *output_encoding, int raw)
|
|
{
|
|
static const char utf8[] = "utf-8";
|
|
const struct object_id *oid;
|
|
char *msg, *msg_p;
|
|
unsigned long linelen, msglen;
|
|
enum object_type type;
|
|
|
|
if (!t)
|
|
t = &default_notes_tree;
|
|
if (!t->initialized)
|
|
init_notes(t, NULL, NULL, 0);
|
|
|
|
oid = get_note(t, object_oid);
|
|
if (!oid)
|
|
return;
|
|
|
|
if (!(msg = repo_read_object_file(the_repository, oid, &type, &msglen)) || type != OBJ_BLOB) {
|
|
free(msg);
|
|
return;
|
|
}
|
|
|
|
if (output_encoding && *output_encoding &&
|
|
!is_encoding_utf8(output_encoding)) {
|
|
char *reencoded = reencode_string(msg, output_encoding, utf8);
|
|
if (reencoded) {
|
|
free(msg);
|
|
msg = reencoded;
|
|
msglen = strlen(msg);
|
|
}
|
|
}
|
|
|
|
/* we will end the annotation by a newline anyway */
|
|
if (msglen && msg[msglen - 1] == '\n')
|
|
msglen--;
|
|
|
|
if (!raw) {
|
|
const char *ref = t->ref;
|
|
if (!ref || !strcmp(ref, GIT_NOTES_DEFAULT_REF)) {
|
|
strbuf_addstr(sb, "\nNotes:\n");
|
|
} else {
|
|
skip_prefix(ref, "refs/", &ref);
|
|
skip_prefix(ref, "notes/", &ref);
|
|
strbuf_addf(sb, "\nNotes (%s):\n", ref);
|
|
}
|
|
}
|
|
|
|
for (msg_p = msg; msg_p < msg + msglen; msg_p += linelen + 1) {
|
|
linelen = strchrnul(msg_p, '\n') - msg_p;
|
|
|
|
if (!raw)
|
|
strbuf_addstr(sb, " ");
|
|
strbuf_add(sb, msg_p, linelen);
|
|
strbuf_addch(sb, '\n');
|
|
}
|
|
|
|
free(msg);
|
|
}
|
|
|
|
void format_display_notes(const struct object_id *object_oid,
|
|
struct strbuf *sb, const char *output_encoding, int raw)
|
|
{
|
|
int i;
|
|
assert(display_notes_trees);
|
|
for (i = 0; display_notes_trees[i]; i++)
|
|
format_note(display_notes_trees[i], object_oid, sb,
|
|
output_encoding, raw);
|
|
}
|
|
|
|
int copy_note(struct notes_tree *t,
|
|
const struct object_id *from_obj, const struct object_id *to_obj,
|
|
int force, combine_notes_fn combine_notes)
|
|
{
|
|
const struct object_id *note = get_note(t, from_obj);
|
|
const struct object_id *existing_note = get_note(t, to_obj);
|
|
|
|
if (!force && existing_note)
|
|
return 1;
|
|
|
|
if (note)
|
|
return add_note(t, to_obj, note, combine_notes);
|
|
else if (existing_note)
|
|
return add_note(t, to_obj, null_oid(), combine_notes);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void expand_notes_ref(struct strbuf *sb)
|
|
{
|
|
if (starts_with(sb->buf, "refs/notes/"))
|
|
return; /* we're happy */
|
|
else if (starts_with(sb->buf, "notes/"))
|
|
strbuf_insertstr(sb, 0, "refs/");
|
|
else
|
|
strbuf_insertstr(sb, 0, "refs/notes/");
|
|
}
|
|
|
|
void expand_loose_notes_ref(struct strbuf *sb)
|
|
{
|
|
struct object_id object;
|
|
|
|
if (repo_get_oid(the_repository, sb->buf, &object)) {
|
|
/* fallback to expand_notes_ref */
|
|
expand_notes_ref(sb);
|
|
}
|
|
}
|