#include "diff.h"
#include "diffcore.h"
#include "revision.h"
+#include "xdiff-interface.h"
#define DEBUG 0
-static const char blame_usage[] = "[-c] [-l] [--] file [commit]\n"
- " -c, --compability Use the same output mode as git-annotate (Default: off)\n"
- " -l, --long Show long commit SHA1 (Default: off)\n"
- " -h, --help This message";
+static const char blame_usage[] = "git-blame [-c] [-l] [-t] [-S <revs-file>] [--] file [commit]\n"
+ " -c, --compatibility Use the same output mode as git-annotate (Default: off)\n"
+ " -l, --long Show long commit SHA1 (Default: off)\n"
+ " -t, --time Show raw timestamp (Default: off)\n"
+ " -S, --revs-file Use revisions from revs-file instead of calling git-rev-list\n"
+ " -h, --help This message";
static struct commit **blame_lines;
static int num_blame_lines;
};
struct chunk {
- int off1, len1; // ---
- int off2, len2; // +++
+ int off1, len1; /* --- */
+ int off2, len2; /* +++ */
};
struct patch {
static void get_blob(struct commit *commit);
/* Only used for statistics */
-static int num_get_patch = 0;
-static int num_commits = 0;
-static int patch_time = 0;
+static int num_get_patch;
+static int num_commits;
+static int patch_time;
-#define TEMPFILE_PATH_LEN 60
-static struct patch *get_patch(struct commit *commit, struct commit *other)
-{
+struct blame_diff_state {
+ struct xdiff_emit_state xm;
struct patch *ret;
- struct util_info *info_c = (struct util_info *)commit->object.util;
- struct util_info *info_o = (struct util_info *)other->object.util;
- char tmp_path1[TEMPFILE_PATH_LEN], tmp_path2[TEMPFILE_PATH_LEN];
- char diff_cmd[TEMPFILE_PATH_LEN*2 + 20];
- struct timeval tv_start, tv_end;
- int fd;
- FILE *fin;
- char buf[1024];
-
- ret = xmalloc(sizeof(struct patch));
- ret->chunks = NULL;
- ret->num = 0;
-
- get_blob(commit);
- get_blob(other);
+};
- gettimeofday(&tv_start, NULL);
+static void process_u0_diff(void *state_, char *line, unsigned long len)
+{
+ struct blame_diff_state *state = state_;
+ struct chunk *chunk;
- fd = git_mkstemp(tmp_path1, TEMPFILE_PATH_LEN, "git-blame-XXXXXX");
- if (fd < 0)
- die("unable to create temp-file: %s", strerror(errno));
+ if (len < 4 || line[0] != '@' || line[1] != '@')
+ return;
- if (xwrite(fd, info_c->buf, info_c->size) != info_c->size)
- die("write failed: %s", strerror(errno));
- close(fd);
+ if (DEBUG)
+ printf("chunk line: %.*s", (int)len, line);
+ state->ret->num++;
+ state->ret->chunks = xrealloc(state->ret->chunks,
+ sizeof(struct chunk) * state->ret->num);
+ chunk = &state->ret->chunks[state->ret->num - 1];
+
+ assert(!strncmp(line, "@@ -", 4));
+
+ if (parse_hunk_header(line, len,
+ &chunk->off1, &chunk->len1,
+ &chunk->off2, &chunk->len2)) {
+ state->ret->num--;
+ return;
+ }
- fd = git_mkstemp(tmp_path2, TEMPFILE_PATH_LEN, "git-blame-XXXXXX");
- if (fd < 0)
- die("unable to create temp-file: %s", strerror(errno));
+ if (chunk->len1 == 0)
+ chunk->off1++;
+ if (chunk->len2 == 0)
+ chunk->off2++;
- if (xwrite(fd, info_o->buf, info_o->size) != info_o->size)
- die("write failed: %s", strerror(errno));
- close(fd);
+ if (chunk->off1 > 0)
+ chunk->off1--;
+ if (chunk->off2 > 0)
+ chunk->off2--;
- sprintf(diff_cmd, "diff -U 0 %s %s", tmp_path1, tmp_path2);
- fin = popen(diff_cmd, "r");
- if (!fin)
- die("popen failed: %s", strerror(errno));
+ assert(chunk->off1 >= 0);
+ assert(chunk->off2 >= 0);
+}
- while (fgets(buf, sizeof(buf), fin)) {
- struct chunk *chunk;
- char *start, *sp;
+static struct patch *get_patch(struct commit *commit, struct commit *other)
+{
+ struct blame_diff_state state;
+ xpparam_t xpp;
+ xdemitconf_t xecfg;
+ mmfile_t file_c, file_o;
+ xdemitcb_t ecb;
+ struct util_info *info_c = (struct util_info *)commit->util;
+ struct util_info *info_o = (struct util_info *)other->util;
+ struct timeval tv_start, tv_end;
- if (buf[0] != '@' || buf[1] != '@')
- continue;
+ get_blob(commit);
+ file_c.ptr = info_c->buf;
+ file_c.size = info_c->size;
- if (DEBUG)
- printf("chunk line: %s", buf);
- ret->num++;
- ret->chunks = xrealloc(ret->chunks,
- sizeof(struct chunk) * ret->num);
- chunk = &ret->chunks[ret->num - 1];
-
- assert(!strncmp(buf, "@@ -", 4));
-
- start = buf + 4;
- sp = index(start, ' ');
- *sp = '\0';
- if (index(start, ',')) {
- int ret =
- sscanf(start, "%d,%d", &chunk->off1, &chunk->len1);
- assert(ret == 2);
- } else {
- int ret = sscanf(start, "%d", &chunk->off1);
- assert(ret == 1);
- chunk->len1 = 1;
- }
- *sp = ' ';
-
- start = sp + 1;
- sp = index(start, ' ');
- *sp = '\0';
- if (index(start, ',')) {
- int ret =
- sscanf(start, "%d,%d", &chunk->off2, &chunk->len2);
- assert(ret == 2);
- } else {
- int ret = sscanf(start, "%d", &chunk->off2);
- assert(ret == 1);
- chunk->len2 = 1;
- }
- *sp = ' ';
+ get_blob(other);
+ file_o.ptr = info_o->buf;
+ file_o.size = info_o->size;
- if (chunk->len1 == 0)
- chunk->off1++;
- if (chunk->len2 == 0)
- chunk->off2++;
+ gettimeofday(&tv_start, NULL);
- if (chunk->off1 > 0)
- chunk->off1--;
- if (chunk->off2 > 0)
- chunk->off2--;
+ xpp.flags = XDF_NEED_MINIMAL;
+ xecfg.ctxlen = 0;
+ xecfg.flags = 0;
+ ecb.outf = xdiff_outf;
+ ecb.priv = &state;
+ memset(&state, 0, sizeof(state));
+ state.xm.consume = process_u0_diff;
+ state.ret = xmalloc(sizeof(struct patch));
+ state.ret->chunks = NULL;
+ state.ret->num = 0;
- assert(chunk->off1 >= 0);
- assert(chunk->off2 >= 0);
- }
- pclose(fin);
- unlink(tmp_path1);
- unlink(tmp_path2);
+ xdl_diff(&file_c, &file_o, &xpp, &xecfg, &ecb);
gettimeofday(&tv_end, NULL);
patch_time += 1000000 * (tv_end.tv_sec - tv_start.tv_sec) +
tv_end.tv_usec - tv_start.tv_usec;
num_get_patch++;
- return ret;
+ return state.ret;
}
static void free_patch(struct patch *p)
free(p);
}
-static int get_blob_sha1_internal(unsigned char *sha1, const char *base,
+static int get_blob_sha1_internal(const unsigned char *sha1, const char *base,
int baselen, const char *pathname,
unsigned mode, int stage);
blame_file = pathname;
pathspec[0] = pathname;
pathspec[1] = NULL;
- memset(blob_sha1, 0, sizeof(blob_sha1));
+ hashclr(blob_sha1);
read_tree_recursive(t, "", 0, 0, pathspec, get_blob_sha1_internal);
for (i = 0; i < 20; i++) {
if (i == 20)
return -1;
- memcpy(sha1, blob_sha1, 20);
+ hashcpy(sha1, blob_sha1);
return 0;
}
-static int get_blob_sha1_internal(unsigned char *sha1, const char *base,
+static int get_blob_sha1_internal(const unsigned char *sha1, const char *base,
int baselen, const char *pathname,
unsigned mode, int stage)
{
strcmp(blame_file + baselen, pathname))
return -1;
- memcpy(blob_sha1, sha1, 20);
+ hashcpy(blob_sha1, sha1);
return -1;
}
static void get_blob(struct commit *commit)
{
- struct util_info *info = commit->object.util;
+ struct util_info *info = commit->util;
char type[20];
if (info->buf)
info->buf = read_sha1_file(info->sha1, type, &info->size);
- assert(!strcmp(type, "blob"));
+ assert(!strcmp(type, blob_type));
}
/* For debugging only */
/* For debugging only */
static void print_map(struct commit *cmit, struct commit *other)
{
- struct util_info *util = cmit->object.util;
- struct util_info *util2 = other->object.util;
+ struct util_info *util = cmit->util;
+ struct util_info *util2 = other->util;
int i;
int max =
}
#endif
-// p is a patch from commit to other.
+/* p is a patch from commit to other. */
static void fill_line_map(struct commit *commit, struct commit *other,
struct patch *p)
{
- struct util_info *util = commit->object.util;
- struct util_info *util2 = other->object.util;
+ struct util_info *util = commit->util;
+ struct util_info *util2 = other->util;
int *map = util->line_map;
int *map2 = util2->line_map;
int cur_chunk = 0;
if (DEBUG)
printf("map: i1: %d %d %p i2: %d %d %p\n",
i1, map[i1],
- i1 != -1 ? blame_lines[map[i1]] : NULL,
+ (void *) (i1 != -1 ? blame_lines[map[i1]] : NULL),
i2, map2[i2],
- i2 != -1 ? blame_lines[map2[i2]] : NULL);
+ (void *) (i2 != -1 ? blame_lines[map2[i2]] : NULL));
if (map2[i2] != -1 &&
blame_lines[map[i1]] &&
!blame_lines[map2[i2]])
static int map_line(struct commit *commit, int line)
{
- struct util_info *info = commit->object.util;
+ struct util_info *info = commit->util;
assert(line >= 0 && line < info->num_lines);
return info->line_map[line];
}
static struct util_info* get_util(struct commit *commit)
{
- struct util_info *util = commit->object.util;
+ struct util_info *util = commit->util;
if (util)
return util;
util->line_map = NULL;
util->num_lines = -1;
util->pathname = NULL;
- commit->object.util = util;
+ commit->util = util;
return util;
}
static int fill_util_info(struct commit *commit)
{
- struct util_info *util = commit->object.util;
+ struct util_info *util = commit->util;
assert(util);
assert(util->pathname);
- if (get_blob_sha1(commit->tree, util->pathname, util->sha1))
- return 1;
- else
- return 0;
+ return !!get_blob_sha1(commit->tree, util->pathname, util->sha1);
}
static void alloc_line_map(struct commit *commit)
{
- struct util_info *util = commit->object.util;
+ struct util_info *util = commit->util;
int i;
if (util->line_map)
static void init_first_commit(struct commit* commit, const char* filename)
{
- struct util_info* util = commit->object.util;
+ struct util_info* util = commit->util;
int i;
util->pathname = filename;
alloc_line_map(commit);
- util = commit->object.util;
+ util = commit->util;
for (i = 0; i < util->num_lines; i++)
util->line_map[i] = i;
assert(commit);
init_first_commit(commit, path);
- util = commit->object.util;
+ util = commit->util;
num_blame_lines = util->num_lines;
blame_lines = xmalloc(sizeof(struct commit *) * num_blame_lines);
blame_contents = util->buf;
continue;
alloc_line_map(commit);
- util = commit->object.util;
+ util = commit->util;
for (parents = commit->parents;
parents != NULL; parents = parents->next) {
static int compare_tree_path(struct rev_info* revs,
struct commit* c1, struct commit* c2)
{
+ int ret;
const char* paths[2];
- struct util_info* util = c2->object.util;
+ struct util_info* util = c2->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);
+ diff_tree_setup_paths(get_pathspec(revs->prefix, paths),
+ &revs->pruning);
+ ret = rev_compare_tree(revs, c1->tree, c2->tree);
+ diff_tree_release_paths(&revs->pruning);
+ return ret;
}
static int same_tree_as_empty_path(struct rev_info *revs, struct tree* t1,
const char* path)
{
+ int ret;
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);
+ diff_tree_setup_paths(get_pathspec(revs->prefix, paths),
+ &revs->pruning);
+ ret = rev_same_tree_as_empty(revs, t1);
+ diff_tree_release_paths(&revs->pruning);
+ return ret;
}
static const char* find_rename(struct commit* commit, struct commit* parent)
{
- struct util_info* cutil = commit->object.util;
+ struct util_info* cutil = commit->util;
struct diff_options diff_opts;
const char *paths[1];
int i;
diff_opts.recursive = 1;
diff_opts.detect_rename = DIFF_DETECT_RENAME;
paths[0] = NULL;
- diff_tree_setup_paths(paths);
+ diff_tree_setup_paths(paths, &diff_opts);
if (diff_setup_done(&diff_opts) < 0)
die("diff_setup_done failed");
return;
if (!commit->parents) {
- struct util_info* util = commit->object.util;
+ struct util_info* util = commit->util;
if (!same_tree_as_empty_path(revs, commit->tree,
util->pathname))
commit->object.flags |= TREECHANGE;
case REV_TREE_NEW:
{
- struct util_info* util = commit->object.util;
+ struct util_info* util = commit->util;
if (revs->remove_empty_trees &&
same_tree_as_empty_path(revs, p->tree,
util->pathname)) {
if (new_name) {
struct util_info* putil = get_util(p);
if (!putil->pathname)
- putil->pathname = strdup(new_name);
+ putil->pathname = xstrdup(new_name);
} else {
*pp = parent->next;
continue;
static char author_buf[1024];
tmp = strstr(commit->buffer, "\nauthor ") + 8;
- len = index(tmp, '\n') - tmp;
+ len = strchr(tmp, '\n') - tmp;
ret->author = author_buf;
memcpy(ret->author, tmp, len);
*tmp = 0;
}
-static const char* format_time(unsigned long time, const char* tz_str)
+static const char* format_time(unsigned long time, const char* tz_str,
+ int show_raw_time)
{
static char time_buf[128];
time_t t = time;
int minutes, tz;
struct tm *tm;
+ if (show_raw_time) {
+ sprintf(time_buf, "%lu %s", time, tz_str);
+ return time_buf;
+ }
+
tz = atoi(tz_str);
minutes = tz < 0 ? -tz : tz;
minutes = (minutes / 100)*60 + (minutes % 100);
static void topo_setter(struct commit* c, void* data)
{
- struct util_info* util = c->object.util;
+ struct util_info* util = c->util;
util->topo_data = data;
}
static void* topo_getter(struct commit* c)
{
- struct util_info* util = c->object.util;
+ struct util_info* util = c->util;
return util->topo_data;
}
+static int read_ancestry(const char *graft_file,
+ unsigned char **start_sha1)
+{
+ FILE *fp = fopen(graft_file, "r");
+ char buf[1024];
+ if (!fp)
+ return -1;
+ while (fgets(buf, sizeof(buf), fp)) {
+ /* The format is just "Commit Parent1 Parent2 ...\n" */
+ int len = strlen(buf);
+ struct commit_graft *graft = read_graft_line(buf, len);
+ register_commit_graft(graft, 0);
+ if (!*start_sha1)
+ *start_sha1 = graft->sha1;
+ }
+ fclose(fp);
+ return 0;
+}
+
int main(int argc, const char **argv)
{
int i;
struct commit *initial = NULL;
- unsigned char sha1[20];
+ unsigned char sha1[20], *sha1_p = NULL;
const char *filename = NULL, *commit = NULL;
char filename_buf[256];
int sha1_len = 8;
- int compability = 0;
+ int compatibility = 0;
+ int show_raw_time = 0;
int options = 1;
struct commit* start_commit;
sha1_len = 40;
continue;
} else if(!strcmp(argv[i], "-c") ||
- !strcmp(argv[i], "--compability")) {
- compability = 1;
+ !strcmp(argv[i], "--compatibility")) {
+ compatibility = 1;
continue;
+ } else if(!strcmp(argv[i], "-t") ||
+ !strcmp(argv[i], "--time")) {
+ show_raw_time = 1;
+ continue;
+ } else if(!strcmp(argv[i], "-S")) {
+ if (i + 1 < argc &&
+ !read_ancestry(argv[i + 1], &sha1_p)) {
+ compatibility = 1;
+ i++;
+ continue;
+ }
+ usage(blame_usage);
} else if(!strcmp(argv[i], "--")) {
options = 0;
continue;
if(!filename)
usage(blame_usage);
- if(!commit)
+ if (commit && sha1_p)
+ usage(blame_usage);
+ else if(!commit)
commit = "HEAD";
if(prefix)
strcpy(filename_buf, filename);
filename = filename_buf;
- if (get_sha1(commit, sha1))
- die("get_sha1 failed, commit '%s' not found", commit);
- start_commit = lookup_commit_reference(sha1);
+ if (!sha1_p) {
+ if (get_sha1(commit, sha1))
+ die("get_sha1 failed, commit '%s' not found", commit);
+ sha1_p = sha1;
+ }
+ start_commit = lookup_commit_reference(sha1_p);
get_util(start_commit)->pathname = filename;
if (fill_util_info(start_commit)) {
printf("%s not found in %s\n", filename, commit);
}
- init_revisions(&rev);
+ init_revisions(&rev, setup_git_directory());
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.parents = 1;
rev.limited = 1;
commit_list_insert(start_commit, &rev.commits);
args[0] = filename;
args[1] = NULL;
- diff_tree_setup_paths(args);
+ diff_tree_setup_paths(args, &rev.pruning);
prepare_revision_walk(&rev);
process_commits(&rev, filename, &initial);
struct util_info* u;
if (!c)
c = initial;
- u = c->object.util;
+ u = c->util;
if (!found_rename && strcmp(filename, u->pathname))
found_rename = 1;
if (!c)
c = initial;
- u = c->object.util;
+ u = c->util;
get_commit_info(c, &ci);
fwrite(sha1_to_hex(c->object.sha1), sha1_len, 1, stdout);
- if(compability) {
+ if(compatibility) {
printf("\t(%10s\t%10s\t%d)", ci.author,
- format_time(ci.author_time, ci.author_tz), i+1);
+ format_time(ci.author_time, ci.author_tz,
+ show_raw_time),
+ i+1);
} 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),
+ format_time(ci.author_time, ci.author_tz,
+ show_raw_time),
max_digits, i+1);
}
if(blame_contents[blame_len-1] != '\n')
putc('\n', stdout);
} else {
- char* next_buf = index(buf, '\n') + 1;
+ char* next_buf = strchr(buf, '\n') + 1;
fwrite(buf, next_buf - buf, 1, stdout);
buf = next_buf;
}