convert.h

   1 /*
   2  * Copyright (c) 2011, Google Inc.
   3  */
   4 #ifndef CONVERT_H
   5 #define CONVERT_H
   6
   7 struct index_state;
   8
   9 enum safe_crlf {
  10         SAFE_CRLF_FALSE = 0,
  11         SAFE_CRLF_FAIL = 1,
  12         SAFE_CRLF_WARN = 2,
  13         SAFE_CRLF_RENORMALIZE = 3,
  14         SAFE_CRLF_KEEP_CRLF = 4
  15 };
  16
  17 extern enum safe_crlf safe_crlf;
  18
  19 enum auto_crlf {
  20         AUTO_CRLF_FALSE = 0,
  21         AUTO_CRLF_TRUE = 1,
  22         AUTO_CRLF_INPUT = -1
  23 };
  24
  25 extern enum auto_crlf auto_crlf;
  26
  27 enum eol {
  28         EOL_UNSET,
  29         EOL_CRLF,
  30         EOL_LF,
  31 #ifdef NATIVE_CRLF
  32         EOL_NATIVE = EOL_CRLF
  33 #else
  34         EOL_NATIVE = EOL_LF
  35 #endif
  36 };
  37
  38 extern enum eol core_eol;
  39 extern const char *get_cached_convert_stats_ascii(const struct index_state *istate,
  40                                                   const char *path);
  41 extern const char *get_wt_convert_stats_ascii(const char *path);
  42 extern const char *get_convert_attr_ascii(const char *path);
  43
  44 /* returns 1 if *dst was used */
  45 extern int convert_to_git(const struct index_state *istate,
  46                           const char *path, const char *src, size_t len,
  47                           struct strbuf *dst, enum safe_crlf checksafe);
  48 extern int convert_to_working_tree(const char *path, const char *src,
  49                                    size_t len, struct strbuf *dst);
  50 extern int renormalize_buffer(const struct index_state *istate,
  51                               const char *path, const char *src, size_t len,
  52                               struct strbuf *dst);
  53 static inline int would_convert_to_git(const struct index_state *istate,
  54                                        const char *path)
  55 {
  56         return convert_to_git(istate, path, NULL, 0, NULL, 0);
  57 }
  58 /* Precondition: would_convert_to_git_filter_fd(path) == true */
  59 extern void convert_to_git_filter_fd(const struct index_state *istate,
  60                                      const char *path, int fd,
  61                                      struct strbuf *dst,
  62                                      enum safe_crlf checksafe);
  63 extern int would_convert_to_git_filter_fd(const char *path);
  64
  65 /*****************************************************************
  66  *
  67  * Streaming conversion support
  68  *
  69  *****************************************************************/
  70
  71 struct stream_filter; /* opaque */
  72
  73 extern struct stream_filter *get_stream_filter(const char *path, const unsigned char *);
  74 extern void free_stream_filter(struct stream_filter *);
  75 extern int is_null_stream_filter(struct stream_filter *);
  76
  77 /*
  78  * Use as much input up to *isize_p and fill output up to *osize_p;
  79  * update isize_p and osize_p to indicate how much buffer space was
  80  * consumed and filled. Return 0 on success, non-zero on error.
  81  *
  82  * Some filters may need to buffer the input and look-ahead inside it
  83  * to decide what to output, and they may consume more than zero bytes
  84  * of input and still not produce any output. After feeding all the
  85  * input, pass NULL as input and keep calling this function, to let
  86  * such filters know there is no more input coming and it is time for
  87  * them to produce the remaining output based on the buffered input.
  88  */
  89 extern int stream_filter(struct stream_filter *,
  90                          const char *input, size_t *isize_p,
  91                          char *output, size_t *osize_p);
  92
  93 #endif /* CONVERT_H */