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c397aac02f
Now that we have the codebase wired up to pass any additional metadata to filters, let's collect the additional metadata that we'd like to pass. The two main places we pass this metadata are checkouts and archives. In these two situations, reading HEAD isn't a valid option, since HEAD isn't updated for checkouts until after the working tree is written and archives can accept an arbitrary tree. In other situations, HEAD will usually reflect the refname of the branch in current use. We pass a smaller amount of data in other cases, such as git cat-file, where we can really only logically know about the blob. This commit updates only the parts of the checkout code where we don't use unpack_trees. That function and callers of it will be handled in a future commit. In the archive code, we leak a small amount of memory, since nothing we pass in the archiver argument structure is freed. Signed-off-by: brian m. carlson <bk2204@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
158 lines
5 KiB
C
158 lines
5 KiB
C
/*
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* Copyright (c) 2011, Google Inc.
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*/
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#ifndef CONVERT_H
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#define CONVERT_H
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#include "hash.h"
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#include "string-list.h"
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struct index_state;
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struct strbuf;
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#define CONV_EOL_RNDTRP_DIE (1<<0) /* Die if CRLF to LF to CRLF is different */
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#define CONV_EOL_RNDTRP_WARN (1<<1) /* Warn if CRLF to LF to CRLF is different */
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#define CONV_EOL_RENORMALIZE (1<<2) /* Convert CRLF to LF */
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#define CONV_EOL_KEEP_CRLF (1<<3) /* Keep CRLF line endings as is */
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#define CONV_WRITE_OBJECT (1<<4) /* Content is written to the index */
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extern int global_conv_flags_eol;
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enum auto_crlf {
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AUTO_CRLF_FALSE = 0,
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AUTO_CRLF_TRUE = 1,
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AUTO_CRLF_INPUT = -1
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};
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extern enum auto_crlf auto_crlf;
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enum eol {
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EOL_UNSET,
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EOL_CRLF,
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EOL_LF,
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#ifdef NATIVE_CRLF
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EOL_NATIVE = EOL_CRLF
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#else
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EOL_NATIVE = EOL_LF
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#endif
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};
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enum ce_delay_state {
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CE_NO_DELAY = 0,
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CE_CAN_DELAY = 1,
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CE_RETRY = 2
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};
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struct delayed_checkout {
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/*
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* State of the currently processed cache entry. If the state is
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* CE_CAN_DELAY, then the filter can delay the current cache entry.
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* If the state is CE_RETRY, then this signals the filter that the
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* cache entry was requested before.
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*/
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enum ce_delay_state state;
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/* List of filter drivers that signaled delayed blobs. */
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struct string_list filters;
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/* List of delayed blobs identified by their path. */
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struct string_list paths;
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};
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struct checkout_metadata {
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const char *refname;
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struct object_id treeish;
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struct object_id blob;
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};
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extern enum eol core_eol;
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extern char *check_roundtrip_encoding;
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const char *get_cached_convert_stats_ascii(const struct index_state *istate,
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const char *path);
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const char *get_wt_convert_stats_ascii(const char *path);
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const char *get_convert_attr_ascii(const struct index_state *istate,
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const char *path);
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/* returns 1 if *dst was used */
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int convert_to_git(const struct index_state *istate,
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const char *path, const char *src, size_t len,
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struct strbuf *dst, int conv_flags);
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int convert_to_working_tree(const struct index_state *istate,
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const char *path, const char *src,
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size_t len, struct strbuf *dst,
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const struct checkout_metadata *meta);
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int async_convert_to_working_tree(const struct index_state *istate,
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const char *path, const char *src,
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size_t len, struct strbuf *dst,
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const struct checkout_metadata *meta,
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void *dco);
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int async_query_available_blobs(const char *cmd,
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struct string_list *available_paths);
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int renormalize_buffer(const struct index_state *istate,
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const char *path, const char *src, size_t len,
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struct strbuf *dst);
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static inline int would_convert_to_git(const struct index_state *istate,
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const char *path)
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{
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return convert_to_git(istate, path, NULL, 0, NULL, 0);
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}
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/* Precondition: would_convert_to_git_filter_fd(path) == true */
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void convert_to_git_filter_fd(const struct index_state *istate,
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const char *path, int fd,
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struct strbuf *dst,
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int conv_flags);
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int would_convert_to_git_filter_fd(const struct index_state *istate,
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const char *path);
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/*
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* Initialize the checkout metadata with the given values. Any argument may be
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* NULL if it is not applicable. The treeish should be a commit if that is
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* available, and a tree otherwise.
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*
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* The refname is not copied and must be valid for the lifetime of the struct.
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* THe object IDs are copied.
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*/
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void init_checkout_metadata(struct checkout_metadata *meta, const char *refname,
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const struct object_id *treeish,
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const struct object_id *blob);
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/* Copy the metadata from src to dst, updating the blob. */
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void clone_checkout_metadata(struct checkout_metadata *dst,
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const struct checkout_metadata *src,
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const struct object_id *blob);
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/*
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* Reset the internal list of attributes used by convert_to_git and
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* convert_to_working_tree.
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*/
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void reset_parsed_attributes(void);
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/*****************************************************************
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*
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* Streaming conversion support
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*
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*****************************************************************/
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struct stream_filter; /* opaque */
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struct stream_filter *get_stream_filter(const struct index_state *istate,
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const char *path,
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const struct object_id *);
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void free_stream_filter(struct stream_filter *);
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int is_null_stream_filter(struct stream_filter *);
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/*
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* Use as much input up to *isize_p and fill output up to *osize_p;
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* update isize_p and osize_p to indicate how much buffer space was
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* consumed and filled. Return 0 on success, non-zero on error.
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*
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* Some filters may need to buffer the input and look-ahead inside it
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* to decide what to output, and they may consume more than zero bytes
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* of input and still not produce any output. After feeding all the
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* input, pass NULL as input and keep calling this function, to let
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* such filters know there is no more input coming and it is time for
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* them to produce the remaining output based on the buffered input.
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*/
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int stream_filter(struct stream_filter *,
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const char *input, size_t *isize_p,
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char *output, size_t *osize_p);
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#endif /* CONVERT_H */
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