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This is the first change in a series to allow modifying the sparse-checkout pattern set without expanding a sparse index to a full one in the process. Here, we focus on the problem of expanding the pattern set through a command like 'git sparse-checkout add <path>' which needs to create new index entries for the paths now being written to the worktree. To achieve this, we need to be able to replace sparse directory entries with their contained files and subdirectories. Once this is complete, other code paths can discover those cache entries and write the corresponding files to disk before committing the index. We already have logic in ensure_full_index() that expands the index entries, so we will use that as our base. Create a new method, expand_index(), which takes a pattern list, but for now mostly ignores it. The current implementation is only correct when the pattern list is NULL as that does the same as ensure_full_index(). In fact, ensure_full_index() is converted to a shim over expand_index(). A future update will actually implement expand_index() to its full capabilities. For now, it is created and documented. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
#ifndef SPARSE_INDEX_H__
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#define SPARSE_INDEX_H__
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struct index_state;
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#define SPARSE_INDEX_MEMORY_ONLY (1 << 0)
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int convert_to_sparse(struct index_state *istate, int flags);
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void ensure_correct_sparsity(struct index_state *istate);
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void clear_skip_worktree_from_present_files(struct index_state *istate);
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/*
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* Some places in the codebase expect to search for a specific path.
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* This path might be outside of the sparse-checkout definition, in
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* which case a sparse-index may not contain a path for that index.
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*
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* Given an index and a path, check to see if a leading directory for
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* 'path' exists in the index as a sparse directory. In that case,
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* expand that sparse directory to a full range of cache entries and
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* populate the index accordingly.
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*/
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void expand_to_path(struct index_state *istate,
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const char *path, size_t pathlen, int icase);
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struct repository;
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int set_sparse_index_config(struct repository *repo, int enable);
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struct pattern_list;
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/**
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* Scan the given index and compare its entries to the given pattern list.
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* If the index is sparse and the pattern list uses cone mode patterns,
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* then modify the index to contain the all of the file entries within that
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* new pattern list. This expands sparse directories only as far as needed.
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*
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* If the pattern list is NULL or does not use cone mode patterns, then the
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* index is expanded to a full index.
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*/
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void expand_index(struct index_state *istate, struct pattern_list *pl);
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#endif
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