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70abe95ff1
This adds a a "simple" red-black tree that can store a record of each file both on the local and remote side.
47 lines
1.0 KiB
C
47 lines
1.0 KiB
C
#ifndef sync_tree_h
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#define sync_tree_h
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/* tree.h - binary search trees of file metadata */
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#include "sync/meta.h"
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/* A reference to a file node by 1-based index, or 0 for none. */
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typedef int FileRef;
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typedef enum
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{
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kNodeBlack,
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kNodeRed,
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} NodeColor;
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/* A file record stored in a binary search tree. */
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struct FileNode {
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/* The sort key. This is a case-folded version of the local filename. */
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FileName key;
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struct FileRec file;
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/* The root of the tree for the directory contents, if this is a
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directory. */
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FileRef directory_root;
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/* Binary search tree bookkeeping. */
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NodeColor color;
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FileRef children[2];
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};
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/* Binary search tree of files. */
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struct FileTree {
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struct FileNode **nodes;
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Size count;
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Size alloc;
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FileRef root;
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};
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/* Insert a node into the tree with the given key. On success, return a positive
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FileRef. On failure, return a negative error code. To get the error code
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value, negate the function result. */
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FileRef TreeInsert(struct FileTree *tree, FileRef directory,
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const FileName *key);
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#endif
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