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-rw-r--r--src/tree-cache.c277
1 files changed, 0 insertions, 277 deletions
diff --git a/src/tree-cache.c b/src/tree-cache.c
deleted file mode 100644
index 04d86fd36..000000000
--- a/src/tree-cache.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * 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 "tree-cache.h"
-
-#include "pool.h"
-#include "tree.h"
-
-static git_tree_cache *find_child(
- const git_tree_cache *tree, const char *path, const char *end)
-{
- size_t i, dirlen = end ? (size_t)(end - path) : strlen(path);
-
- for (i = 0; i < tree->children_count; ++i) {
- git_tree_cache *child = tree->children[i];
-
- if (child->namelen == dirlen && !memcmp(path, child->name, dirlen))
- return child;
- }
-
- return NULL;
-}
-
-void git_tree_cache_invalidate_path(git_tree_cache *tree, const char *path)
-{
- const char *ptr = path, *end;
-
- if (tree == NULL)
- return;
-
- tree->entry_count = -1;
-
- while (ptr != NULL) {
- end = strchr(ptr, '/');
-
- if (end == NULL) /* End of path */
- break;
-
- tree = find_child(tree, ptr, end);
- if (tree == NULL) /* We don't have that tree */
- return;
-
- tree->entry_count = -1;
- ptr = end + 1;
- }
-}
-
-const git_tree_cache *git_tree_cache_get(const git_tree_cache *tree, const char *path)
-{
- const char *ptr = path, *end;
-
- if (tree == NULL) {
- return NULL;
- }
-
- while (1) {
- end = strchr(ptr, '/');
-
- tree = find_child(tree, ptr, end);
- if (tree == NULL) /* Can't find it */
- return NULL;
-
- if (end == NULL || *end + 1 == '\0')
- return tree;
-
- ptr = end + 1;
- }
-}
-
-static int read_tree_internal(git_tree_cache **out,
- const char **buffer_in, const char *buffer_end,
- git_pool *pool)
-{
- git_tree_cache *tree = NULL;
- const char *name_start, *buffer;
- int count;
-
- buffer = name_start = *buffer_in;
-
- if ((buffer = memchr(buffer, '\0', buffer_end - buffer)) == NULL)
- goto corrupted;
-
- if (++buffer >= buffer_end)
- goto corrupted;
-
- if (git_tree_cache_new(&tree, name_start, pool) < 0)
- return -1;
-
- /* Blank-terminated ASCII decimal number of entries in this tree */
- if (git__strntol32(&count, buffer, buffer_end - buffer, &buffer, 10) < 0)
- goto corrupted;
-
- tree->entry_count = count;
-
- if (*buffer != ' ' || ++buffer >= buffer_end)
- goto corrupted;
-
- /* Number of children of the tree, newline-terminated */
- if (git__strntol32(&count, buffer, buffer_end - buffer, &buffer, 10) < 0 || count < 0)
- goto corrupted;
-
- tree->children_count = count;
-
- if (*buffer != '\n' || ++buffer > buffer_end)
- goto corrupted;
-
- /* The SHA1 is only there if it's not invalidated */
- if (tree->entry_count >= 0) {
- /* 160-bit SHA-1 for this tree and it's children */
- if (buffer + GIT_OID_RAWSZ > buffer_end)
- goto corrupted;
-
- git_oid_fromraw(&tree->oid, (const unsigned char *)buffer);
- buffer += GIT_OID_RAWSZ;
- }
-
- /* Parse children: */
- if (tree->children_count > 0) {
- size_t i, bufsize;
-
- GIT_ERROR_CHECK_ALLOC_MULTIPLY(&bufsize, tree->children_count, sizeof(git_tree_cache*));
-
- tree->children = git_pool_malloc(pool, bufsize);
- GIT_ERROR_CHECK_ALLOC(tree->children);
-
- memset(tree->children, 0x0, bufsize);
-
- for (i = 0; i < tree->children_count; ++i) {
- if (read_tree_internal(&tree->children[i], &buffer, buffer_end, pool) < 0)
- goto corrupted;
- }
- }
-
- *buffer_in = buffer;
- *out = tree;
- return 0;
-
- corrupted:
- git_error_set(GIT_ERROR_INDEX, "corrupted TREE extension in index");
- return -1;
-}
-
-int git_tree_cache_read(git_tree_cache **tree, const char *buffer, size_t buffer_size, git_pool *pool)
-{
- const char *buffer_end = buffer + buffer_size;
-
- if (read_tree_internal(tree, &buffer, buffer_end, pool) < 0)
- return -1;
-
- if (buffer < buffer_end) {
- git_error_set(GIT_ERROR_INDEX, "corrupted TREE extension in index (unexpected trailing data)");
- return -1;
- }
-
- return 0;
-}
-
-static int read_tree_recursive(git_tree_cache *cache, const git_tree *tree, git_pool *pool)
-{
- git_repository *repo;
- size_t i, j, nentries, ntrees, alloc_size;
- int error;
-
- repo = git_tree_owner(tree);
-
- git_oid_cpy(&cache->oid, git_tree_id(tree));
- nentries = git_tree_entrycount(tree);
-
- /*
- * We make sure we know how many trees we need to allocate for
- * so we don't have to realloc and change the pointers for the
- * parents.
- */
- ntrees = 0;
- for (i = 0; i < nentries; i++) {
- const git_tree_entry *entry;
-
- entry = git_tree_entry_byindex(tree, i);
- if (git_tree_entry_filemode(entry) == GIT_FILEMODE_TREE)
- ntrees++;
- }
-
- GIT_ERROR_CHECK_ALLOC_MULTIPLY(&alloc_size, ntrees, sizeof(git_tree_cache *));
-
- cache->children_count = ntrees;
- cache->children = git_pool_mallocz(pool, alloc_size);
- GIT_ERROR_CHECK_ALLOC(cache->children);
-
- j = 0;
- for (i = 0; i < nentries; i++) {
- const git_tree_entry *entry;
- git_tree *subtree;
-
- entry = git_tree_entry_byindex(tree, i);
- if (git_tree_entry_filemode(entry) != GIT_FILEMODE_TREE) {
- cache->entry_count++;
- continue;
- }
-
- if ((error = git_tree_cache_new(&cache->children[j], git_tree_entry_name(entry), pool)) < 0)
- return error;
-
- if ((error = git_tree_lookup(&subtree, repo, git_tree_entry_id(entry))) < 0)
- return error;
-
- error = read_tree_recursive(cache->children[j], subtree, pool);
- git_tree_free(subtree);
- cache->entry_count += cache->children[j]->entry_count;
- j++;
-
- if (error < 0)
- return error;
- }
-
- return 0;
-}
-
-int git_tree_cache_read_tree(git_tree_cache **out, const git_tree *tree, git_pool *pool)
-{
- int error;
- git_tree_cache *cache;
-
- if ((error = git_tree_cache_new(&cache, "", pool)) < 0)
- return error;
-
- if ((error = read_tree_recursive(cache, tree, pool)) < 0)
- return error;
-
- *out = cache;
- return 0;
-}
-
-int git_tree_cache_new(git_tree_cache **out, const char *name, git_pool *pool)
-{
- size_t name_len, alloc_size;
- git_tree_cache *tree;
-
- name_len = strlen(name);
-
- GIT_ERROR_CHECK_ALLOC_ADD3(&alloc_size, sizeof(git_tree_cache), name_len, 1);
-
- tree = git_pool_malloc(pool, alloc_size);
- GIT_ERROR_CHECK_ALLOC(tree);
-
- memset(tree, 0x0, sizeof(git_tree_cache));
- /* NUL-terminated tree name */
- tree->namelen = name_len;
- memcpy(tree->name, name, name_len);
- tree->name[name_len] = '\0';
-
- *out = tree;
- return 0;
-}
-
-static void write_tree(git_buf *out, git_tree_cache *tree)
-{
- size_t i;
-
- git_buf_printf(out, "%s%c%"PRIdZ" %"PRIuZ"\n", tree->name, 0, tree->entry_count, tree->children_count);
-
- if (tree->entry_count != -1)
- git_buf_put(out, (const char *) &tree->oid, GIT_OID_RAWSZ);
-
- for (i = 0; i < tree->children_count; i++)
- write_tree(out, tree->children[i]);
-}
-
-int git_tree_cache_write(git_buf *out, git_tree_cache *tree)
-{
- write_tree(out, tree);
-
- return git_buf_oom(out) ? -1 : 0;
-}