#include "tree.h"
#include "blob.h"
#include "diff.h"
+ #include "diffcore.h"
#include "revision.h"
#define DEBUG 0
char *buf;
unsigned long size;
int num_lines;
- // const char* path;
+ const char* pathname;
+
+ void* topo_data;
};
struct chunk {
unsigned mode, int stage);
static unsigned char blob_sha1[20];
+ static const char* blame_file;
static int get_blob_sha1(struct tree *t, const char *pathname,
unsigned char *sha1)
{
int i;
const char *pathspec[2];
+ blame_file = pathname;
pathspec[0] = pathname;
pathspec[1] = NULL;
memset(blob_sha1, 0, sizeof(blob_sha1));
if (S_ISDIR(mode))
return READ_TREE_RECURSIVE;
+ if (strncmp(blame_file, base, baselen) ||
+ strcmp(blame_file + baselen, pathname))
+ return -1;
+
memcpy(blob_sha1, sha1, 20);
return -1;
}
return info->line_map[line];
}
- static int fill_util_info(struct commit *commit, const char *path)
+ static struct util_info* get_util(struct commit *commit)
{
- struct util_info *util;
- if (commit->object.util)
- return 0;
+ struct util_info *util = commit->object.util;
+
+ if (util)
+ return util;
util = xmalloc(sizeof(struct util_info));
+ util->buf = NULL;
+ util->size = 0;
+ util->line_map = NULL;
+ util->num_lines = -1;
+ util->pathname = NULL;
+ commit->object.util = util;
+ return util;
+ }
+
+ static int fill_util_info(struct commit *commit)
+ {
+ struct util_info *util = commit->object.util;
+
+ assert(util);
+ assert(util->pathname);
- if (get_blob_sha1(commit->tree, path, util->sha1)) {
- free(util);
+ if (get_blob_sha1(commit->tree, util->pathname, util->sha1))
return 1;
- } else {
- util->buf = NULL;
- util->size = 0;
- util->line_map = NULL;
- util->num_lines = -1;
- commit->object.util = util;
+ else
return 0;
- }
}
static void alloc_line_map(struct commit *commit)
static void init_first_commit(struct commit* commit, const char* filename)
{
- struct util_info* util;
+ struct util_info* util = commit->object.util;
int i;
- if (fill_util_info(commit, filename))
+ util->pathname = filename;
+ if (fill_util_info(commit))
die("fill_util_info failed");
alloc_line_map(commit);
if(num_parents == 0)
*initial = commit;
- if(fill_util_info(commit, path))
+ if (fill_util_info(commit))
continue;
alloc_line_map(commit);
printf("parent: %s\n",
sha1_to_hex(parent->object.sha1));
- if(fill_util_info(parent, path)) {
+ if (fill_util_info(parent)) {
num_parents--;
continue;
}
} while ((commit = get_revision(rev)) != NULL);
}
+
+ static int compare_tree_path(struct rev_info* revs,
+ struct commit* c1, struct commit* c2)
+ {
+ const char* paths[2];
+ struct util_info* util = c2->object.util;
+ paths[0] = util->pathname;
+ paths[1] = NULL;
+
+ diff_tree_setup_paths(get_pathspec(revs->prefix, paths));
+ return rev_compare_tree(c1->tree, c2->tree);
+ }
+
+
+ static int same_tree_as_empty_path(struct rev_info *revs, struct tree* t1,
+ const char* path)
+ {
+ const char* paths[2];
+ paths[0] = path;
+ paths[1] = NULL;
+
+ diff_tree_setup_paths(get_pathspec(revs->prefix, paths));
+ return rev_same_tree_as_empty(t1);
+ }
+
+ static const char* find_rename(struct commit* commit, struct commit* parent)
+ {
+ struct util_info* cutil = commit->object.util;
+ struct diff_options diff_opts;
+ const char *paths[1];
+ int i;
+
+ if (DEBUG) {
+ printf("find_rename commit: %s ",
+ sha1_to_hex(commit->object.sha1));
+ puts(sha1_to_hex(parent->object.sha1));
+ }
+
+ diff_setup(&diff_opts);
+ diff_opts.recursive = 1;
+ diff_opts.detect_rename = DIFF_DETECT_RENAME;
+ paths[0] = NULL;
+ diff_tree_setup_paths(paths);
+ if (diff_setup_done(&diff_opts) < 0)
+ die("diff_setup_done failed");
+
+ diff_tree_sha1(commit->tree->object.sha1, parent->tree->object.sha1,
+ "", &diff_opts);
+ diffcore_std(&diff_opts);
+
+ for (i = 0; i < diff_queued_diff.nr; i++) {
+ struct diff_filepair *p = diff_queued_diff.queue[i];
+
+ if (p->status == 'R' && !strcmp(p->one->path, cutil->pathname)) {
+ if (DEBUG)
+ printf("rename %s -> %s\n", p->one->path, p->two->path);
+ return p->two->path;
+ }
+ }
+
+ return 0;
+ }
+
+ static void simplify_commit(struct rev_info *revs, struct commit *commit)
+ {
+ struct commit_list **pp, *parent;
+
+ if (!commit->tree)
+ return;
+
+ if (!commit->parents) {
+ struct util_info* util = commit->object.util;
+ if (!same_tree_as_empty_path(revs, commit->tree,
+ util->pathname))
+ commit->object.flags |= TREECHANGE;
+ return;
+ }
+
+ pp = &commit->parents;
+ while ((parent = *pp) != NULL) {
+ struct commit *p = parent->item;
+
+ if (p->object.flags & UNINTERESTING) {
+ pp = &parent->next;
+ continue;
+ }
+
+ parse_commit(p);
+ switch (compare_tree_path(revs, p, commit)) {
+ case REV_TREE_SAME:
+ parent->next = NULL;
+ commit->parents = parent;
+ get_util(p)->pathname = get_util(commit)->pathname;
+ return;
+
+ case REV_TREE_NEW:
+ {
+
+ struct util_info* util = commit->object.util;
+ if (revs->remove_empty_trees &&
+ same_tree_as_empty_path(revs, p->tree,
+ util->pathname)) {
+ const char* new_name = find_rename(commit, p);
+ if (new_name) {
+ struct util_info* putil = get_util(p);
+ if (!putil->pathname)
+ putil->pathname = strdup(new_name);
+ } else {
+ *pp = parent->next;
+ continue;
+ }
+ }
+ }
+
+ /* fallthrough */
+ case REV_TREE_DIFFERENT:
+ pp = &parent->next;
+ if (!get_util(p)->pathname)
+ get_util(p)->pathname =
+ get_util(commit)->pathname;
+ continue;
+ }
+ die("bad tree compare for commit %s",
+ sha1_to_hex(commit->object.sha1));
+ }
+ commit->object.flags |= TREECHANGE;
+ }
+
+
struct commit_info
{
char* author;
return time_buf;
}
+ static void topo_setter(struct commit* c, void* data)
+ {
+ struct util_info* util = c->object.util;
+ util->topo_data = data;
+ }
+
+ static void* topo_getter(struct commit* c)
+ {
+ struct util_info* util = c->object.util;
+ return util->topo_data;
+ }
+
int main(int argc, const char **argv)
{
int i;
int sha1_len = 8;
int compability = 0;
int options = 1;
+ struct commit* start_commit;
- int num_args;
const char* args[10];
struct rev_info rev;
struct commit_info ci;
const char *buf;
int max_digits;
- size_t longest_file, longest_author;
++ int longest_file, longest_author;
+ int found_rename;
const char* prefix = setup_git_directory();
++ git_config(git_default_config);
for(i = 1; i < argc; i++) {
if(options) {
strcpy(filename_buf, filename);
filename = filename_buf;
- {
- struct commit* c;
- if (get_sha1(commit, sha1))
- die("get_sha1 failed, commit '%s' not found", commit);
- c = lookup_commit_reference(sha1);
-
- if (fill_util_info(c, filename)) {
- printf("%s not found in %s\n", filename, commit);
- return 1;
- }
+ if (get_sha1(commit, sha1))
+ die("get_sha1 failed, commit '%s' not found", commit);
+ start_commit = lookup_commit_reference(sha1);
+ get_util(start_commit)->pathname = filename;
+ if (fill_util_info(start_commit)) {
+ printf("%s not found in %s\n", filename, commit);
+ return 1;
}
- num_args = 0;
- args[num_args++] = NULL;
- args[num_args++] = "--topo-order";
- args[num_args++] = "--remove-empty";
- args[num_args++] = commit;
- args[num_args++] = "--";
- args[num_args++] = filename;
- args[num_args] = NULL;
- setup_revisions(num_args, args, &rev, "HEAD");
+ init_revisions(&rev);
+ rev.remove_empty_trees = 1;
+ rev.topo_order = 1;
+ rev.prune_fn = simplify_commit;
+ rev.topo_setter = topo_setter;
+ rev.topo_getter = topo_getter;
+ rev.limited = 1;
+
+ commit_list_insert(start_commit, &rev.commits);
+
+ args[0] = filename;
+ args[1] = NULL;
+ diff_tree_setup_paths(args);
prepare_revision_walk(&rev);
process_commits(&rev, filename, &initial);
for (max_digits = 1, i = 10; i <= num_blame_lines + 1; max_digits++)
i *= 10;
+ longest_file = 0;
+ longest_author = 0;
+ found_rename = 0;
for (i = 0; i < num_blame_lines; i++) {
struct commit *c = blame_lines[i];
+ struct util_info* u;
if (!c)
c = initial;
+ u = c->object.util;
+ if (!found_rename && strcmp(filename, u->pathname))
+ found_rename = 1;
+ if (longest_file < strlen(u->pathname))
+ longest_file = strlen(u->pathname);
+ get_commit_info(c, &ci);
+ if (longest_author < strlen(ci.author))
+ longest_author = strlen(ci.author);
+ }
+
+ for (i = 0; i < num_blame_lines; i++) {
+ struct commit *c = blame_lines[i];
+ struct util_info* u;
+
+ if (!c)
+ c = initial;
+
+ u = c->object.util;
get_commit_info(c, &ci);
fwrite(sha1_to_hex(c->object.sha1), sha1_len, 1, stdout);
- if(compability)
+ if(compability) {
printf("\t(%10s\t%10s\t%d)", ci.author,
format_time(ci.author_time, ci.author_tz), i+1);
- else
- printf(" (%-15.15s %10s %*d) ", ci.author,
+ } else {
+ if (found_rename)
+ printf(" %-*.*s", longest_file, longest_file,
+ u->pathname);
+ printf(" (%-*.*s %10s %*d) ",
+ longest_author, longest_author, ci.author,
format_time(ci.author_time, ci.author_tz),
max_digits, i+1);
+ }
if(i == num_blame_lines - 1) {
fwrite(buf, blame_len - (buf - blame_contents),