Merge branch 'sg/t-helper-gitignore'
[git/git.git] / convert.h
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1/*
2 * Copyright (c) 2011, Google Inc.
3 */
4#ifndef CONVERT_H
5#define CONVERT_H
6
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7#include "string-list.h"
8
a7609c54 9struct index_state;
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10struct object_id;
11struct strbuf;
a7609c54 12
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13#define CONV_EOL_RNDTRP_DIE (1<<0) /* Die if CRLF to LF to CRLF is different */
14#define CONV_EOL_RNDTRP_WARN (1<<1) /* Warn if CRLF to LF to CRLF is different */
15#define CONV_EOL_RENORMALIZE (1<<2) /* Convert CRLF to LF */
16#define CONV_EOL_KEEP_CRLF (1<<3) /* Keep CRLF line endings as is */
107642fe 17#define CONV_WRITE_OBJECT (1<<4) /* Content is written to the index */
d1bf0e08 18
8462ff43 19extern int global_conv_flags_eol;
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20
21enum auto_crlf {
22 AUTO_CRLF_FALSE = 0,
23 AUTO_CRLF_TRUE = 1,
24 AUTO_CRLF_INPUT = -1
25};
26
27extern enum auto_crlf auto_crlf;
28
29enum eol {
30 EOL_UNSET,
31 EOL_CRLF,
32 EOL_LF,
33#ifdef NATIVE_CRLF
34 EOL_NATIVE = EOL_CRLF
35#else
36 EOL_NATIVE = EOL_LF
37#endif
38};
39
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40enum ce_delay_state {
41 CE_NO_DELAY = 0,
42 CE_CAN_DELAY = 1,
43 CE_RETRY = 2
44};
45
46struct delayed_checkout {
47 /*
48 * State of the currently processed cache entry. If the state is
49 * CE_CAN_DELAY, then the filter can delay the current cache entry.
50 * If the state is CE_RETRY, then this signals the filter that the
51 * cache entry was requested before.
52 */
53 enum ce_delay_state state;
54 /* List of filter drivers that signaled delayed blobs. */
55 struct string_list filters;
56 /* List of delayed blobs identified by their path. */
57 struct string_list paths;
58};
59
d1bf0e08 60extern enum eol core_eol;
e92d6225 61extern char *check_roundtrip_encoding;
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62const char *get_cached_convert_stats_ascii(const struct index_state *istate,
63 const char *path);
64const char *get_wt_convert_stats_ascii(const char *path);
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65const char *get_convert_attr_ascii(const struct index_state *istate,
66 const char *path);
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67
68/* returns 1 if *dst was used */
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69int convert_to_git(const struct index_state *istate,
70 const char *path, const char *src, size_t len,
71 struct strbuf *dst, int conv_flags);
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72int convert_to_working_tree(const struct index_state *istate,
73 const char *path, const char *src,
546f70f3 74 size_t len, struct strbuf *dst);
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75int async_convert_to_working_tree(const struct index_state *istate,
76 const char *path, const char *src,
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77 size_t len, struct strbuf *dst,
78 void *dco);
79int async_query_available_blobs(const char *cmd,
80 struct string_list *available_paths);
81int renormalize_buffer(const struct index_state *istate,
82 const char *path, const char *src, size_t len,
83 struct strbuf *dst);
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84static inline int would_convert_to_git(const struct index_state *istate,
85 const char *path)
92ac3197 86{
82b474e0 87 return convert_to_git(istate, path, NULL, 0, NULL, 0);
92ac3197 88}
9035d75a 89/* Precondition: would_convert_to_git_filter_fd(path) == true */
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90void convert_to_git_filter_fd(const struct index_state *istate,
91 const char *path, int fd,
92 struct strbuf *dst,
93 int conv_flags);
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94int would_convert_to_git_filter_fd(const struct index_state *istate,
95 const char *path);
b6691092 96
2c65d90f 97/*
98 * Reset the internal list of attributes used by convert_to_git and
99 * convert_to_working_tree.
100 */
101void reset_parsed_attributes(void);
102
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103/*****************************************************************
104 *
749f763d 105 * Streaming conversion support
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106 *
107 *****************************************************************/
108
109struct stream_filter; /* opaque */
110
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111struct stream_filter *get_stream_filter(const struct index_state *istate,
112 const char *path,
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113 const struct object_id *);
114void free_stream_filter(struct stream_filter *);
115int is_null_stream_filter(struct stream_filter *);
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116
117/*
118 * Use as much input up to *isize_p and fill output up to *osize_p;
119 * update isize_p and osize_p to indicate how much buffer space was
120 * consumed and filled. Return 0 on success, non-zero on error.
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121 *
122 * Some filters may need to buffer the input and look-ahead inside it
123 * to decide what to output, and they may consume more than zero bytes
124 * of input and still not produce any output. After feeding all the
125 * input, pass NULL as input and keep calling this function, to let
126 * such filters know there is no more input coming and it is time for
127 * them to produce the remaining output based on the buffered input.
b6691092 128 */
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129int stream_filter(struct stream_filter *,
130 const char *input, size_t *isize_p,
131 char *output, size_t *osize_p);
b6691092 132
d1bf0e08 133#endif /* CONVERT_H */