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