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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        int prefix_length;
  39
  40        /* These are lock_file related */
  41        struct lock_file *lock_file;
  42        int newfd;
  43
  44        /* These control what gets looked at and modified */
  45        int apply; /* this is not a dry-run */
  46        int cached; /* apply to the index only */
  47        int check; /* preimage must match working tree, don't actually apply */
  48        int check_index; /* preimage must match the indexed version */
  49        int update_index; /* check_index && apply */
  50
  51        /* These control cosmetic aspect of the output */
  52        int diffstat; /* just show a diffstat, and don't actually apply */
  53        int numstat; /* just show a numeric diffstat, and don't actually apply */
  54        int summary; /* just report creation, deletion, etc, and don't actually apply */
  55
  56        /* These boolean parameters control how the apply is done */
  57        int allow_overlap;
  58        int apply_in_reverse;
  59        int apply_with_reject;
  60        int no_add;
  61        int threeway;
  62        int unidiff_zero;
  63        int unsafe_paths;
  64
  65        /* Other non boolean parameters */
  66        const char *index_file;
  67        enum apply_verbosity apply_verbosity;
  68        const char *fake_ancestor;
  69        const char *patch_input_file;
  70        int line_termination;
  71        struct strbuf root;
  72        int p_value;
  73        int p_value_known;
  74        unsigned int p_context;
  75
  76        /* Exclude and include path parameters */
  77        struct string_list limit_by_name;
  78        int has_include;
  79
  80        /* Various "current state" */
  81        int linenr; /* current line number */
  82        struct string_list symlink_changes; /* we have to track symlinks */
  83
  84        /*
  85         * For "diff-stat" like behaviour, we keep track of the biggest change
  86         * we've seen, and the longest filename. That allows us to do simple
  87         * scaling.
  88         */
  89        int max_change;
  90        int max_len;
  91
  92        /*
  93         * Records filenames that have been touched, in order to handle
  94         * the case where more than one patches touch the same file.
  95         */
  96        struct string_list fn_table;
  97
  98        /*
  99         * This is to save reporting routines before using
 100         * set_error_routine() or set_warn_routine() to install muting
 101         * routines when in verbosity_silent mode.
 102         */
 103        void (*saved_error_routine)(const char *err, va_list params);
 104        void (*saved_warn_routine)(const char *warn, va_list params);
 105
 106        /* These control whitespace errors */
 107        enum apply_ws_error_action ws_error_action;
 108        enum apply_ws_ignore ws_ignore_action;
 109        const char *whitespace_option;
 110        int whitespace_error;
 111        int squelch_whitespace_errors;
 112        int applied_after_fixing_ws;
 113};
 114
 115extern int apply_parse_options(int argc, const char **argv,
 116                               struct apply_state *state,
 117                               int *force_apply, int *options,
 118                               const char * const *apply_usage);
 119extern int init_apply_state(struct apply_state *state,
 120                            const char *prefix,
 121                            struct lock_file *lock_file);
 122extern void clear_apply_state(struct apply_state *state);
 123extern 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
 132extern int apply_all_patches(struct apply_state *state,
 133                             int argc,
 134                             const char **argv,
 135                             int options);
 136
 137#endif