branch.h

   1 #ifndef BRANCH_H
   2 #define BRANCH_H
   3
   4 struct repository;
   5 struct strbuf;
   6
   7 enum branch_track {
   8         BRANCH_TRACK_UNSPECIFIED = -1,
   9         BRANCH_TRACK_NEVER = 0,
  10         BRANCH_TRACK_REMOTE,
  11         BRANCH_TRACK_ALWAYS,
  12         BRANCH_TRACK_EXPLICIT,
  13         BRANCH_TRACK_OVERRIDE,
  14         BRANCH_TRACK_INHERIT,
  15         BRANCH_TRACK_SIMPLE,
  16 };
  17
  18 extern enum branch_track git_branch_track;
  19
  20 /* Functions for acting on the information about branches. */
  21
  22 /**
  23  * Sets branch.<new_ref>.{remote,merge} config settings such that
  24  * new_ref tracks orig_ref according to the specified tracking mode.
  25  *
  26  *   - new_ref is the name of the branch that we are setting tracking
  27  *     for.
  28  *
  29  *   - orig_ref is the name of the ref that is 'upstream' of new_ref.
  30  *     orig_ref will be expanded with DWIM so that the config settings
  31  *     are in the correct format e.g. "refs/remotes/origin/main" instead
  32  *     of "origin/main".
  33  *
  34  *   - track is the tracking mode e.g. BRANCH_TRACK_REMOTE causes
  35  *     new_ref to track orig_ref directly, whereas BRANCH_TRACK_INHERIT
  36  *     causes new_ref to track whatever orig_ref tracks.
  37  *
  38  *   - quiet suppresses tracking information.
  39  */
  40 void dwim_and_setup_tracking(struct repository *r, const char *new_ref,
  41                              const char *orig_ref, enum branch_track track,
  42                              int quiet);
  43
  44 /*
  45  * Creates a new branch, where:
  46  *
  47  *   - r is the repository to add a branch to
  48  *
  49  *   - name is the new branch name
  50  *
  51  *   - start_name is the name of the existing branch that the new branch should
  52  *     start from
  53  *
  54  *   - force enables overwriting an existing (non-head) branch
  55  *
  56  *   - clobber_head_ok, when enabled with 'force', allows the currently
  57  *     checked out (head) branch to be overwritten
  58  *
  59  *   - reflog creates a reflog for the branch
  60  *
  61  *   - quiet suppresses tracking information
  62  *
  63  *   - track causes the new branch to be configured to merge the remote branch
  64  *     that start_name is a tracking branch for (if any).
  65  *
  66  *   - dry_run causes the branch to be validated but not created.
  67  *
  68  */
  69 void create_branch(struct repository *r,
  70                    const char *name, const char *start_name,
  71                    int force, int clobber_head_ok,
  72                    int reflog, int quiet, enum branch_track track,
  73                    int dry_run);
  74
  75 /*
  76  * Creates a new branch in a repository and its submodules (and its
  77  * submodules, recursively). The parameters are mostly analogous to
  78  * those of create_branch() except for start_name, which is represented
  79  * by two different parameters:
  80  *
  81  * - start_commitish is the commit-ish, in repository r, that determines
  82  *   which commits the branches will point to. The superproject branch
  83  *   will point to the commit of start_commitish and the submodule
  84  *   branches will point to the gitlink commit oids in start_commitish's
  85  *   tree.
  86  *
  87  * - tracking_name is the name of the ref, in repository r, that will be
  88  *   used to set up tracking information. This value is propagated to
  89  *   all submodules, which will evaluate the ref using their own ref
  90  *   stores. If NULL, this defaults to start_commitish.
  91  *
  92  * When this function is called on the superproject, start_commitish
  93  * can be any user-provided ref and tracking_name can be NULL (similar
  94  * to create_branches()). But when recursing through submodules,
  95  * start_commitish is the plain gitlink commit oid. Since the oid cannot
  96  * be used for tracking information, tracking_name is propagated and
  97  * used for tracking instead.
  98  */
  99 void create_branches_recursively(struct repository *r, const char *name,
 100                                  const char *start_commitish,
 101                                  const char *tracking_name, int force,
 102                                  int reflog, int quiet, enum branch_track track,
 103                                  int dry_run);
 104
 105 /*
 106  * If the branch at 'refname' is currently checked out in a worktree,
 107  * then return the path to that worktree.
 108  */
 109 const char *branch_checked_out(const char *refname);
 110
 111 /*
 112  * Check if 'name' can be a valid name for a branch; die otherwise.
 113  * Return 1 if the named branch already exists; return 0 otherwise.
 114  * Fill ref with the full refname for the branch.
 115  */
 116 int validate_branchname(const char *name, struct strbuf *ref);
 117
 118 /*
 119  * Check if a branch 'name' can be created as a new branch; die otherwise.
 120  * 'force' can be used when it is OK for the named branch already exists.
 121  * Return 1 if the named branch already exists; return 0 otherwise.
 122  * Fill ref with the full refname for the branch.
 123  */
 124 int validate_new_branchname(const char *name, struct strbuf *ref, int force);
 125
 126 /*
 127  * Remove information about the merge state on the current
 128  * branch. (E.g., MERGE_HEAD)
 129  */
 130 void remove_merge_branch_state(struct repository *r);
 131
 132 /*
 133  * Remove information about the state of working on the current
 134  * branch. (E.g., MERGE_HEAD)
 135  */
 136 void remove_branch_state(struct repository *r, int verbose);
 137
 138 /*
 139  * Configure local branch "local" as downstream to branch "remote"
 140  * from remote "origin".  Used by git branch --set-upstream.
 141  * Returns 0 on success.
 142  */
 143 #define BRANCH_CONFIG_VERBOSE 01
 144 int install_branch_config(int flag, const char *local, const char *origin, const char *remote);
 145
 146 /*
 147  * Read branch description
 148  */
 149 int read_branch_desc(struct strbuf *, const char *branch_name);
 150
 151 /*
 152  * Check if a branch is checked out in the main worktree or any linked
 153  * worktree and die (with a message describing its checkout location) if
 154  * it is.
 155  */
 156 void die_if_checked_out(const char *branch, int ignore_current_worktree);
 157
 158 /*
 159  * Update all per-worktree HEADs pointing at the old ref to point the new ref.
 160  * This will be used when renaming a branch. Returns 0 if successful, non-zero
 161  * otherwise.
 162  */
 163 int replace_each_worktree_head_symref(const char *oldref, const char *newref,
 164                                       const char *logmsg);
 165
 166 #endif