Andrew's git - gitweb.git/blob

   1/*
   2 * Copyright (c) 2011, Google Inc.
   3 */
   4#ifndef CONVERT_H
   5#define CONVERT_H
   6
   7#include "string-list.h"
   8
   9struct index_state;
  10
  11enum safe_crlf {
  12        SAFE_CRLF_FALSE = 0,
  13        SAFE_CRLF_FAIL = 1,
  14        SAFE_CRLF_WARN = 2,
  15        SAFE_CRLF_RENORMALIZE = 3,
  16        SAFE_CRLF_KEEP_CRLF = 4
  17};
  18
  19extern enum safe_crlf safe_crlf;
  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
  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
  60extern enum eol core_eol;
  61extern const char *get_cached_convert_stats_ascii(const struct index_state *istate,
  62                                                  const char *path);
  63extern const char *get_wt_convert_stats_ascii(const char *path);
  64extern const char *get_convert_attr_ascii(const char *path);
  65
  66/* returns 1 if *dst was used */
  67extern int convert_to_git(const struct index_state *istate,
  68                          const char *path, const char *src, size_t len,
  69                          struct strbuf *dst, enum safe_crlf checksafe);
  70extern int convert_to_working_tree(const char *path, const char *src,
  71                                   size_t len, struct strbuf *dst);
  72extern int async_convert_to_working_tree(const char *path, const char *src,
  73                                         size_t len, struct strbuf *dst,
  74                                         void *dco);
  75extern int async_query_available_blobs(const char *cmd, struct string_list *available_paths);
  76extern int renormalize_buffer(const struct index_state *istate,
  77                              const char *path, const char *src, size_t len,
  78                              struct strbuf *dst);
  79static inline int would_convert_to_git(const struct index_state *istate,
  80                                       const char *path)
  81{
  82        return convert_to_git(istate, path, NULL, 0, NULL, 0);
  83}
  84/* Precondition: would_convert_to_git_filter_fd(path) == true */
  85extern void convert_to_git_filter_fd(const struct index_state *istate,
  86                                     const char *path, int fd,
  87                                     struct strbuf *dst,
  88                                     enum safe_crlf checksafe);
  89extern int would_convert_to_git_filter_fd(const char *path);
  90
  91/*****************************************************************
  92 *
  93 * Streaming conversion support
  94 *
  95 *****************************************************************/
  96
  97struct stream_filter; /* opaque */
  98
  99extern struct stream_filter *get_stream_filter(const char *path, const unsigned char *);
 100extern void free_stream_filter(struct stream_filter *);
 101extern int is_null_stream_filter(struct stream_filter *);
 102
 103/*
 104 * Use as much input up to *isize_p and fill output up to *osize_p;
 105 * update isize_p and osize_p to indicate how much buffer space was
 106 * consumed and filled. Return 0 on success, non-zero on error.
 107 *
 108 * Some filters may need to buffer the input and look-ahead inside it
 109 * to decide what to output, and they may consume more than zero bytes
 110 * of input and still not produce any output. After feeding all the
 111 * input, pass NULL as input and keep calling this function, to let
 112 * such filters know there is no more input coming and it is time for
 113 * them to produce the remaining output based on the buffered input.
 114 */
 115extern int stream_filter(struct stream_filter *,
 116                         const char *input, size_t *isize_p,
 117                         char *output, size_t *osize_p);
 118
 119#endif /* CONVERT_H */