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