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-rw-r--r--blame.h143
-rw-r--r--builtin/blame.c134
2 files changed, 144 insertions, 133 deletions
diff --git a/blame.h b/blame.h
new file mode 100644
index 0000000..c064d92
--- /dev/null
+++ b/blame.h
@@ -0,0 +1,143 @@
+#ifndef BLAME_H
+#define BLAME_H
+
+#include "cache.h"
+#include "commit.h"
+#include "xdiff-interface.h"
+#include "revision.h"
+#include "prio-queue.h"
+
+/*
+ * One blob in a commit that is being suspected
+ */
+struct blame_origin {
+ int refcnt;
+ /* Record preceding blame record for this blob */
+ struct blame_origin *previous;
+ /* origins are put in a list linked via `next' hanging off the
+ * corresponding commit's util field in order to make finding
+ * them fast. The presence in this chain does not count
+ * towards the origin's reference count. It is tempting to
+ * let it count as long as the commit is pending examination,
+ * but even under circumstances where the commit will be
+ * present multiple times in the priority queue of unexamined
+ * commits, processing the first instance will not leave any
+ * work requiring the origin data for the second instance. An
+ * interspersed commit changing that would have to be
+ * preexisting with a different ancestry and with the same
+ * commit date in order to wedge itself between two instances
+ * of the same commit in the priority queue _and_ produce
+ * blame entries relevant for it. While we don't want to let
+ * us get tripped up by this case, it certainly does not seem
+ * worth optimizing for.
+ */
+ struct blame_origin *next;
+ struct commit *commit;
+ /* `suspects' contains blame entries that may be attributed to
+ * this origin's commit or to parent commits. When a commit
+ * is being processed, all suspects will be moved, either by
+ * assigning them to an origin in a different commit, or by
+ * shipping them to the scoreboard's ent list because they
+ * cannot be attributed to a different commit.
+ */
+ struct blame_entry *suspects;
+ mmfile_t file;
+ struct object_id blob_oid;
+ unsigned mode;
+ /* guilty gets set when shipping any suspects to the final
+ * blame list instead of other commits
+ */
+ char guilty;
+ char path[FLEX_ARRAY];
+};
+
+/*
+ * Each group of lines is described by a blame_entry; it can be split
+ * as we pass blame to the parents. They are arranged in linked lists
+ * kept as `suspects' of some unprocessed origin, or entered (when the
+ * blame origin has been finalized) into the scoreboard structure.
+ * While the scoreboard structure is only sorted at the end of
+ * processing (according to final image line number), the lists
+ * attached to an origin are sorted by the target line number.
+ */
+struct blame_entry {
+ struct blame_entry *next;
+
+ /* the first line of this group in the final image;
+ * internally all line numbers are 0 based.
+ */
+ int lno;
+
+ /* how many lines this group has */
+ int num_lines;
+
+ /* the commit that introduced this group into the final image */
+ struct blame_origin *suspect;
+
+ /* the line number of the first line of this group in the
+ * suspect's file; internally all line numbers are 0 based.
+ */
+ int s_lno;
+
+ /* how significant this entry is -- cached to avoid
+ * scanning the lines over and over.
+ */
+ unsigned score;
+};
+
+/*
+ * The current state of the blame assignment.
+ */
+struct blame_scoreboard {
+ /* the final commit (i.e. where we started digging from) */
+ struct commit *final;
+ /* Priority queue for commits with unassigned blame records */
+ struct prio_queue commits;
+ struct rev_info *revs;
+ const char *path;
+
+ /*
+ * The contents in the final image.
+ * Used by many functions to obtain contents of the nth line,
+ * indexed with scoreboard.lineno[blame_entry.lno].
+ */
+ const char *final_buf;
+ unsigned long final_buf_size;
+
+ /* linked list of blames */
+ struct blame_entry *ent;
+
+ /* look-up a line in the final buffer */
+ int num_lines;
+ int *lineno;
+
+ /* stats */
+ int num_read_blob;
+ int num_get_patch;
+ int num_commits;
+
+ /*
+ * blame for a blame_entry with score lower than these thresholds
+ * is not passed to the parent using move/copy logic.
+ */
+ unsigned move_score;
+ unsigned copy_score;
+
+ /* use this file's contents as the final image */
+ const char *contents_from;
+
+ /* flags */
+ int reverse;
+ int show_root;
+ int xdl_opts;
+ int no_whole_file_rename;
+ int debug;
+
+ /* callbacks */
+ void(*on_sanity_fail)(struct blame_scoreboard *, int);
+ void(*found_guilty_entry)(struct blame_entry *, void *);
+
+ void *found_guilty_entry_data;
+};
+
+#endif /* BLAME_H */
diff --git a/builtin/blame.c b/builtin/blame.c
index 29771b7..07b1a76 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -28,6 +28,7 @@
#include "line-log.h"
#include "dir.h"
#include "progress.h"
+#include "blame.h"
static char blame_usage[] = N_("git blame [<options>] [<rev-opts>] [<rev>] [--] <file>");
@@ -75,50 +76,6 @@ static unsigned blame_copy_score;
#define METAINFO_SHOWN (1u<<12)
#define MORE_THAN_ONE_PATH (1u<<13)
-/*
- * One blob in a commit that is being suspected
- */
-struct blame_origin {
- int refcnt;
- /* Record preceding blame record for this blob */
- struct blame_origin *previous;
- /* origins are put in a list linked via `next' hanging off the
- * corresponding commit's util field in order to make finding
- * them fast. The presence in this chain does not count
- * towards the origin's reference count. It is tempting to
- * let it count as long as the commit is pending examination,
- * but even under circumstances where the commit will be
- * present multiple times in the priority queue of unexamined
- * commits, processing the first instance will not leave any
- * work requiring the origin data for the second instance. An
- * interspersed commit changing that would have to be
- * preexisting with a different ancestry and with the same
- * commit date in order to wedge itself between two instances
- * of the same commit in the priority queue _and_ produce
- * blame entries relevant for it. While we don't want to let
- * us get tripped up by this case, it certainly does not seem
- * worth optimizing for.
- */
- struct blame_origin *next;
- struct commit *commit;
- /* `suspects' contains blame entries that may be attributed to
- * this origin's commit or to parent commits. When a commit
- * is being processed, all suspects will be moved, either by
- * assigning them to an origin in a different commit, or by
- * shipping them to the scoreboard's ent list because they
- * cannot be attributed to a different commit.
- */
- struct blame_entry *suspects;
- mmfile_t file;
- struct object_id blob_oid;
- unsigned mode;
- /* guilty gets set when shipping any suspects to the final
- * blame list instead of other commits
- */
- char guilty;
- char path[FLEX_ARRAY];
-};
-
struct progress_info {
struct progress *progress;
int blamed_lines;
@@ -209,40 +166,6 @@ static void drop_origin_blob(struct blame_origin *o)
}
/*
- * Each group of lines is described by a blame_entry; it can be split
- * as we pass blame to the parents. They are arranged in linked lists
- * kept as `suspects' of some unprocessed origin, or entered (when the
- * blame origin has been finalized) into the scoreboard structure.
- * While the scoreboard structure is only sorted at the end of
- * processing (according to final image line number), the lists
- * attached to an origin are sorted by the target line number.
- */
-struct blame_entry {
- struct blame_entry *next;
-
- /* the first line of this group in the final image;
- * internally all line numbers are 0 based.
- */
- int lno;
-
- /* how many lines this group has */
- int num_lines;
-
- /* the commit that introduced this group into the final image */
- struct blame_origin *suspect;
-
- /* the line number of the first line of this group in the
- * suspect's file; internally all line numbers are 0 based.
- */
- int s_lno;
-
- /* how significant this entry is -- cached to avoid
- * scanning the lines over and over.
- */
- unsigned score;
-};
-
-/*
* Any merge of blames happens on lists of blames that arrived via
* different parents in a single suspect. In this case, we want to
* sort according to the suspect line numbers as opposed to the final
@@ -335,61 +258,6 @@ static int compare_commits_by_reverse_commit_date(const void *a,
return -compare_commits_by_commit_date(a, b, c);
}
-/*
- * The current state of the blame assignment.
- */
-struct blame_scoreboard {
- /* the final commit (i.e. where we started digging from) */
- struct commit *final;
- /* Priority queue for commits with unassigned blame records */
- struct prio_queue commits;
- struct rev_info *revs;
- const char *path;
-
- /*
- * The contents in the final image.
- * Used by many functions to obtain contents of the nth line,
- * indexed with scoreboard.lineno[blame_entry.lno].
- */
- const char *final_buf;
- unsigned long final_buf_size;
-
- /* linked list of blames */
- struct blame_entry *ent;
-
- /* look-up a line in the final buffer */
- int num_lines;
- int *lineno;
-
- /* stats */
- int num_read_blob;
- int num_get_patch;
- int num_commits;
-
- /*
- * blame for a blame_entry with score lower than these thresholds
- * is not passed to the parent using move/copy logic.
- */
- unsigned move_score;
- unsigned copy_score;
-
- /* use this file's contents as the final image */
- const char *contents_from;
-
- /* flags */
- int reverse;
- int show_root;
- int xdl_opts;
- int no_whole_file_rename;
- int debug;
-
- /* callbacks */
- void(*on_sanity_fail)(struct blame_scoreboard *, int);
- void(*found_guilty_entry)(struct blame_entry *, void *);
-
- void *found_guilty_entry_data;
-};
-
static void blame_sort_final(struct blame_scoreboard *sb)
{
sb->ent = llist_mergesort(sb->ent, get_next_blame, set_next_blame,