apply.h

   1 #ifndef APPLY_H
   2 #define APPLY_H
   3
   4 enum apply_ws_error_action {
   5         nowarn_ws_error,
   6         warn_on_ws_error,
   7         die_on_ws_error,
   8         correct_ws_error
   9 };
  10
  11 enum apply_ws_ignore {
  12         ignore_ws_none,
  13         ignore_ws_change
  14 };
  15
  16 /*
  17  * We need to keep track of how symlinks in the preimage are
  18  * manipulated by the patches.  A patch to add a/b/c where a/b
  19  * is a symlink should not be allowed to affect the directory
  20  * the symlink points at, but if the same patch removes a/b,
  21  * it is perfectly fine, as the patch removes a/b to make room
  22  * to create a directory a/b so that a/b/c can be created.
  23  *
  24  * See also "struct string_list symlink_changes" in "struct
  25  * apply_state".
  26  */
  27 #define APPLY_SYMLINK_GOES_AWAY 01
  28 #define APPLY_SYMLINK_IN_RESULT 02
  29
  30 struct apply_state {
  31         const char *prefix;
  32         int prefix_length;
  33
  34         /* These are lock_file related */
  35         struct lock_file *lock_file;
  36         int newfd;
  37
  38         /* These control what gets looked at and modified */
  39         int apply; /* this is not a dry-run */
  40         int cached; /* apply to the index only */
  41         int check; /* preimage must match working tree, don't actually apply */
  42         int check_index; /* preimage must match the indexed version */
  43         int update_index; /* check_index && apply */
  44
  45         /* These control cosmetic aspect of the output */
  46         int diffstat; /* just show a diffstat, and don't actually apply */
  47         int numstat; /* just show a numeric diffstat, and don't actually apply */
  48         int summary; /* just report creation, deletion, etc, and don't actually apply */
  49
  50         /* These boolean parameters control how the apply is done */
  51         int allow_overlap;
  52         int apply_in_reverse;
  53         int apply_with_reject;
  54         int apply_verbosely;
  55         int no_add;
  56         int threeway;
  57         int unidiff_zero;
  58         int unsafe_paths;
  59
  60         /* Other non boolean parameters */
  61         const char *fake_ancestor;
  62         const char *patch_input_file;
  63         int line_termination;
  64         struct strbuf root;
  65         int p_value;
  66         int p_value_known;
  67         unsigned int p_context;
  68
  69         /* Exclude and include path parameters */
  70         struct string_list limit_by_name;
  71         int has_include;
  72
  73         /* Various "current state" */
  74         int linenr; /* current line number */
  75         struct string_list symlink_changes; /* we have to track symlinks */
  76
  77         /*
  78          * For "diff-stat" like behaviour, we keep track of the biggest change
  79          * we've seen, and the longest filename. That allows us to do simple
  80          * scaling.
  81          */
  82         int max_change;
  83         int max_len;
  84
  85         /*
  86          * Records filenames that have been touched, in order to handle
  87          * the case where more than one patches touch the same file.
  88          */
  89         struct string_list fn_table;
  90
  91         /* These control whitespace errors */
  92         enum apply_ws_error_action ws_error_action;
  93         enum apply_ws_ignore ws_ignore_action;
  94         const char *whitespace_option;
  95         int whitespace_error;
  96         int squelch_whitespace_errors;
  97         int applied_after_fixing_ws;
  98 };
  99
 100 extern int parse_whitespace_option(struct apply_state *state,
 101                                    const char *option);
 102 extern int parse_ignorewhitespace_option(struct apply_state *state,
 103                                          const char *option);
 104
 105 extern int apply_option_parse_exclude(const struct option *opt,
 106                                       const char *arg, int unset);
 107 extern int apply_option_parse_include(const struct option *opt,
 108                                       const char *arg, int unset);
 109 extern int apply_option_parse_p(const struct option *opt,
 110                                 const char *arg,
 111                                 int unset);
 112 extern int apply_option_parse_whitespace(const struct option *opt,
 113                                          const char *arg, int unset);
 114 extern int apply_option_parse_directory(const struct option *opt,
 115                                         const char *arg, int unset);
 116 extern int apply_option_parse_space_change(const struct option *opt,
 117                                            const char *arg, int unset);
 118
 119 extern int init_apply_state(struct apply_state *state,
 120                             const char *prefix,
 121                             struct lock_file *lock_file);
 122 extern void clear_apply_state(struct apply_state *state);
 123 extern int check_apply_state(struct apply_state *state, int force_apply);
 124
 125 /*
 126  * Some aspects of the apply behavior are controlled by the following
 127  * bits in the "options" parameter passed to apply_all_patches().
 128  */
 129 #define APPLY_OPT_INACCURATE_EOF        (1<<0) /* accept inaccurate eof */
 130 #define APPLY_OPT_RECOUNT               (1<<1) /* accept inaccurate line count */
 131
 132 extern int apply_all_patches(struct apply_state *state,
 133                              int argc,
 134                              const char **argv,
 135                              int options);
 136
 137 #endif