#ifndef REVISION_H
#define REVISION_H
#include "commit.h"
#include "parse-options.h"
#include "grep.h"
#include "notes.h"
#include "pretty.h"
#include "diff.h"
#include "commit-slab-decl.h"
/**
* The revision walking API offers functions to build a list of revisions
* and then iterate over that list.
*
* Calling sequence
* ----------------
*
* The walking API has a given calling sequence: first you need to initialize
* a rev_info structure, then add revisions to control what kind of revision
* list do you want to get, finally you can iterate over the revision list.
*
*/
/* Remember to update object flag allocation in object.h */
#define SEEN (1u<<0)
#define UNINTERESTING (1u<<1)
#define TREESAME (1u<<2)
#define SHOWN (1u<<3)
#define TMP_MARK (1u<<4) /* for isolated cases; clean after use */
#define BOUNDARY (1u<<5)
#define CHILD_SHOWN (1u<<6)
#define ADDED (1u<<7) /* Parents already parsed and added? */
#define SYMMETRIC_LEFT (1u<<8)
#define PATCHSAME (1u<<9)
#define BOTTOM (1u<<10)
/*
* Indicates object was reached by traversal. i.e. not given by user on
* command-line or stdin.
* NEEDSWORK: NOT_USER_GIVEN doesn't apply to commits because we only support
* filtering trees and blobs, but it may be useful to support filtering commits
* in the future.
*/
#define NOT_USER_GIVEN (1u<<25)
#define TRACK_LINEAR (1u<<26)
#define ALL_REV_FLAGS (((1u<<11)-1) | NOT_USER_GIVEN | TRACK_LINEAR)
#define TOPO_WALK_EXPLORED (1u<<27)
#define TOPO_WALK_INDEGREE (1u<<28)
#define DECORATE_SHORT_REFS 1
#define DECORATE_FULL_REFS 2
struct log_info;
struct repository;
struct rev_info;
struct string_list;
struct saved_parents;
define_shared_commit_slab(revision_sources, char *);
struct rev_cmdline_info {
unsigned int nr;
unsigned int alloc;
struct rev_cmdline_entry {
struct object *item;
const char *name;
enum {
REV_CMD_REF,
REV_CMD_PARENTS_ONLY,
REV_CMD_LEFT,
REV_CMD_RIGHT,
REV_CMD_MERGE_BASE,
REV_CMD_REV
} whence;
unsigned flags;
} *rev;
};
#define REVISION_WALK_WALK 0
#define REVISION_WALK_NO_WALK_SORTED 1
#define REVISION_WALK_NO_WALK_UNSORTED 2
struct oidset;
struct topo_walk_info;
struct rev_info {
/* Starting list */
struct commit_list *commits;
struct object_array pending;
struct repository *repo;
/* Parents of shown commits */
struct object_array boundary_commits;
/* The end-points specified by the end user */
struct rev_cmdline_info cmdline;
/* excluding from --branches, --refs, etc. expansion */
struct string_list *ref_excludes;
/* Basic information */
const char *prefix;
const char *def;
struct pathspec prune_data;
/*
* Whether the arguments parsed by setup_revisions() included any
* "input" revisions that might still have yielded an empty pending
* list (e.g., patterns like "--all" or "--glob").
*/
int rev_input_given;
/*
* Whether we read from stdin due to the --stdin option.
*/
int read_from_stdin;
/* topo-sort */
enum rev_sort_order sort_order;
unsigned int early_output;
unsigned int ignore_missing:1,
ignore_missing_links:1;
/* Traversal flags */
unsigned int dense:1,
prune:1,
no_walk:2,
remove_empty_trees:1,
simplify_history:1,
topo_order:1,
simplify_merges:1,
simplify_by_decoration:1,
single_worktree:1,
tag_objects:1,
tree_objects:1,
blob_objects:1,
verify_objects:1,
edge_hint:1,
edge_hint_aggressive:1,
limited:1,
unpacked:1,
boundary:2,
count:1,
left_right:1,
left_only:1,
right_only:1,
rewrite_parents:1,
print_parents:1,
show_decorations:1,
reverse:1,
reverse_output_stage:1,
cherry_pick:1,
cherry_mark:1,
bisect:1,
ancestry_path:1,
first_parent_only:1,
line_level_traverse:1,
tree_blobs_in_commit_order:1,
/*
* Blobs are shown without regard for their existence.
* But not so for trees: unless exclude_promisor_objects
* is set and the tree in question is a promisor object;
* OR ignore_missing_links is set, the revision walker
* dies with a "bad tree object HASH" message when
* encountering a missing tree. For callers that can
* handle missing trees and want them to be filterable
* and showable, set this to true. The revision walker
* will filter and show such a missing tree as usual,
* but will not attempt to recurse into this tree
* object.
*/
do_not_die_on_missing_tree:1,
/* for internal use only */
exclude_promisor_objects:1;
/* Diff flags */
unsigned int diff:1,
full_diff:1,
show_root_diff:1,
no_commit_id:1,
verbose_header:1,
ignore_merges:1,
combine_merges:1,
combined_all_paths:1,
dense_combined_merges:1,
always_show_header:1;
/* Format info */
int show_notes;
unsigned int shown_one:1,
shown_dashes:1,
show_merge:1,
show_notes_given:1,
show_signature:1,
pretty_given:1,
abbrev_commit:1,
abbrev_commit_given:1,
zero_commit:1,
use_terminator:1,
missing_newline:1,
date_mode_explicit:1,
preserve_subject:1;
unsigned int disable_stdin:1;
/* --show-linear-break */
unsigned int track_linear:1,
track_first_time:1,
linear:1;
struct date_mode date_mode;
int expand_tabs_in_log; /* unset if negative */
int expand_tabs_in_log_default;
unsigned int abbrev;
enum cmit_fmt commit_format;
struct log_info *loginfo;
int nr, total;
const char *mime_boundary;
const char *patch_suffix;
int numbered_files;
int reroll_count;
char *message_id;
struct ident_split from_ident;
struct string_list *ref_message_ids;
int add_signoff;
const char *extra_headers;
const char *log_reencode;
const char *subject_prefix;
int no_inline;
int show_log_size;
struct string_list *mailmap;
/* Filter by commit log message */
struct grep_opt grep_filter;
/* Negate the match of grep_filter */
int invert_grep;
/* Display history graph */
struct git_graph *graph;
/* special limits */
int skip_count;
int max_count;
timestamp_t max_age;
timestamp_t min_age;
int min_parents;
int max_parents;
int (*include_check)(struct commit *, void *);
void *include_check_data;
/* diff info for patches and for paths limiting */
struct diff_options diffopt;
struct diff_options pruning;
struct reflog_walk_info *reflog_info;
struct decoration children;
struct decoration merge_simplification;
struct decoration treesame;
/* notes-specific options: which refs to show */
struct display_notes_opt notes_opt;
/* interdiff */
const struct object_id *idiff_oid1;
const struct object_id *idiff_oid2;
const char *idiff_title;
/* range-diff */
const char *rdiff1;
const char *rdiff2;
int creation_factor;
const char *rdiff_title;
/* commit counts */
int count_left;
int count_right;
int count_same;
/* line level range that we are chasing */
struct decoration line_log_data;
/* copies of the parent lists, for --full-diff display */
struct saved_parents *saved_parents_slab;
struct commit_list *previous_parents;
const char *break_bar;
struct revision_sources *sources;
struct topo_walk_info *topo_walk_info;
};
int ref_excluded(struct string_list *, const char *path);
void clear_ref_exclusion(struct string_list **);
void add_ref_exclusion(struct string_list **, const char *exclude);
#define REV_TREE_SAME 0
#define REV_TREE_NEW 1 /* Only new files */
#define REV_TREE_OLD 2 /* Only files removed */
#define REV_TREE_DIFFERENT 3 /* Mixed changes */
/* revision.c */
typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
extern volatile show_early_output_fn_t show_early_output;
struct setup_revision_opt {
const char *def;
void (*tweak)(struct rev_info *, struct setup_revision_opt *);
const char *submodule; /* TODO: drop this and use rev_info->repo */
unsigned int assume_dashdash:1,
allow_exclude_promisor_objects:1;
unsigned revarg_opt;
};
#ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
#define init_revisions(revs, prefix) repo_init_revisions(the_repository, revs, prefix)
#endif
/**
* Initialize a rev_info structure with default values. The third parameter may
* be NULL or can be prefix path, and then the `.prefix` variable will be set
* to it. This is typically the first function you want to call when you want
* to deal with a revision list. After calling this function, you are free to
* customize options, like set `.ignore_merges` to 0 if you don't want to
* ignore merges, and so on.
*/
void repo_init_revisions(struct repository *r,
struct rev_info *revs,
const char *prefix);
/**
* Parse revision information, filling in the `rev_info` structure, and
* removing the used arguments from the argument list. Returns the number
* of arguments left that weren't recognized, which are also moved to the
* head of the argument list. The last parameter is used in case no
* parameter given by the first two arguments.
*/
int setup_revisions(int argc, const char **argv, struct rev_info *revs,
struct setup_revision_opt *);
void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
const struct option *options,
const char * const usagestr[]);
#define REVARG_CANNOT_BE_FILENAME 01
#define REVARG_COMMITTISH 02
int handle_revision_arg(const char *arg, struct rev_info *revs,
int flags, unsigned revarg_opt);
/**
* Reset the flags used by the revision walking api. You can use this to do
* multiple sequential revision walks.
*/
void reset_revision_walk(void);
/**
* Prepares the rev_info structure for a walk. You should check if it returns
* any error (non-zero return code) and if it does not, you can start using
* get_revision() to do the iteration.
*/
int prepare_revision_walk(struct rev_info *revs);
/**
* Takes a pointer to a `rev_info` structure and iterates over it, returning a
* `struct commit *` each time you call it. The end of the revision list is
* indicated by returning a NULL pointer.
*/
struct commit *get_revision(struct rev_info *revs);
const char *get_revision_mark(const struct rev_info *revs,
const struct commit *commit);
void put_revision_mark(const struct rev_info *revs,
const struct commit *commit);
void mark_parents_uninteresting(struct commit *commit);
void mark_tree_uninteresting(struct repository *r, struct tree *tree);
void mark_trees_uninteresting_sparse(struct repository *r, struct oidset *trees);
void show_object_with_name(FILE *, struct object *, const char *);
/**
* This function can be used if you want to add commit objects as revision
* information. You can use the `UNINTERESTING` object flag to indicate if
* you want to include or exclude the given commit (and commits reachable
* from the given commit) from the revision list.
*
* NOTE: If you have the commits as a string list then you probably want to
* use setup_revisions(), instead of parsing each string and using this
* function.
*/
void add_pending_object(struct rev_info *revs,
struct object *obj, const char *name);
void add_pending_oid(struct rev_info *revs,
const char *name, const struct object_id *oid,
unsigned int flags);
void add_head_to_pending(struct rev_info *);
void add_reflogs_to_pending(struct rev_info *, unsigned int flags);
void add_index_objects_to_pending(struct rev_info *, unsigned int flags);
enum commit_action {
commit_ignore,
commit_show,
commit_error
};
enum commit_action get_commit_action(struct rev_info *revs,
struct commit *commit);
enum commit_action simplify_commit(struct rev_info *revs,
struct commit *commit);
enum rewrite_result {
rewrite_one_ok,
rewrite_one_noparents,
rewrite_one_error
};
typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct commit **pp);
int rewrite_parents(struct rev_info *revs,
struct commit *commit,
rewrite_parent_fn_t rewrite_parent);
/*
* The log machinery saves the original parent list so that
* get_saved_parents() can later tell what the real parents of the
* commits are, when commit->parents has been modified by history
* simpification.
*
* get_saved_parents() will transparently return commit->parents if
* history simplification is off.
*/
struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit);
#endif
