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-rw-r--r--blame.c458
1 files changed, 312 insertions, 146 deletions
diff --git a/blame.c b/blame.c
index d0e506c02..1144c8533 100644
--- a/blame.c
+++ b/blame.c
@@ -17,19 +17,26 @@
#include "diffcore.h"
#include "revision.h"
#include "xdiff-interface.h"
+#include "quote.h"
+#ifndef DEBUG
#define DEBUG 0
+#endif
-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 const char blame_usage[] =
+"git-blame [-c] [-l] [-t] [-f] [-n] [-p] [-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"
+" -f, --show-name Show original filename (Default: auto)\n"
+" -n, --show-number Show original linenumber (Default: off)\n"
+" -p, --porcelain Show in a format designed for machine consumption\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;
-static char* blame_contents;
+static char *blame_contents;
static int blame_len;
struct util_info {
@@ -38,9 +45,10 @@ struct util_info {
char *buf;
unsigned long size;
int num_lines;
- const char* pathname;
+ const char *pathname;
+ unsigned meta_given:1;
- void* topo_data;
+ void *topo_data;
};
struct chunk {
@@ -157,11 +165,10 @@ static int get_blob_sha1_internal(const unsigned char *sha1, const char *base,
unsigned mode, int stage);
static unsigned char blob_sha1[20];
-static const char* blame_file;
+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;
@@ -169,12 +176,7 @@ static int get_blob_sha1(struct tree *t, const char *pathname,
hashclr(blob_sha1);
read_tree_recursive(t, "", 0, 0, pathspec, get_blob_sha1_internal);
- for (i = 0; i < 20; i++) {
- if (blob_sha1[i] != 0)
- break;
- }
-
- if (i == 20)
+ if (is_null_sha1(blob_sha1))
return -1;
hashcpy(sha1, blob_sha1);
@@ -234,6 +236,9 @@ static void print_map(struct commit *cmit, struct commit *other)
util2->num_lines ? util->num_lines : util2->num_lines;
int num;
+ if (print_map == NULL)
+ ; /* to avoid "unused function" warning */
+
for (i = 0; i < max; i++) {
printf("i: %d ", i);
num = -1;
@@ -241,7 +246,8 @@ static void print_map(struct commit *cmit, struct commit *other)
if (i < util->num_lines) {
num = util->line_map[i];
printf("%d\t", num);
- } else
+ }
+ else
printf("\t");
if (i < util2->num_lines) {
@@ -249,7 +255,8 @@ static void print_map(struct commit *cmit, struct commit *other)
printf("%d\t", num2);
if (num != -1 && num2 != num)
printf("---");
- } else
+ }
+ else
printf("\t");
printf("\n");
@@ -268,12 +275,12 @@ static void fill_line_map(struct commit *commit, struct commit *other,
int cur_chunk = 0;
int i1, i2;
- if (p->num && DEBUG)
- print_patch(p);
-
- if (DEBUG)
+ if (DEBUG) {
+ if (p->num)
+ print_patch(p);
printf("num lines 1: %d num lines 2: %d\n", util->num_lines,
util2->num_lines);
+ }
for (i1 = 0, i2 = 0; i1 < util->num_lines; i1++, i2++) {
struct chunk *chunk = NULL;
@@ -295,7 +302,8 @@ static void fill_line_map(struct commit *commit, struct commit *other,
i2 += chunk->len2;
cur_chunk++;
- } else {
+ }
+ else {
if (i2 >= util2->num_lines)
break;
@@ -329,19 +337,15 @@ static int map_line(struct commit *commit, int line)
return info->line_map[line];
}
-static struct util_info* get_util(struct commit *commit)
+static struct util_info *get_util(struct commit *commit)
{
struct util_info *util = commit->util;
if (util)
return util;
- util = xmalloc(sizeof(struct util_info));
- util->buf = NULL;
- util->size = 0;
- util->line_map = NULL;
+ util = xcalloc(1, sizeof(struct util_info));
util->num_lines = -1;
- util->pathname = NULL;
commit->util = util;
return util;
}
@@ -371,7 +375,7 @@ static void alloc_line_map(struct commit *commit)
if (util->buf[i] == '\n')
util->num_lines++;
}
- if(util->buf[util->size - 1] != '\n')
+ if (util->buf[util->size - 1] != '\n')
util->num_lines++;
util->line_map = xmalloc(sizeof(int) * util->num_lines);
@@ -380,9 +384,9 @@ static void alloc_line_map(struct commit *commit)
util->line_map[i] = -1;
}
-static void init_first_commit(struct commit* commit, const char* filename)
+static void init_first_commit(struct commit *commit, const char *filename)
{
- struct util_info* util = commit->util;
+ struct util_info *util = commit->util;
int i;
util->pathname = filename;
@@ -397,18 +401,17 @@ static void init_first_commit(struct commit* commit, const char* filename)
util->line_map[i] = i;
}
-
static void process_commits(struct rev_info *rev, const char *path,
- struct commit** initial)
+ struct commit **initial)
{
int i;
- struct util_info* util;
+ struct util_info *util;
int lines_left;
int *blame_p;
int *new_lines;
int new_lines_len;
- struct commit* commit = get_revision(rev);
+ struct commit *commit = get_revision(rev);
assert(commit);
init_first_commit(commit, path);
@@ -444,7 +447,7 @@ static void process_commits(struct rev_info *rev, const char *path,
parents != NULL; parents = parents->next)
num_parents++;
- if(num_parents == 0)
+ if (num_parents == 0)
*initial = commit;
if (fill_util_info(commit))
@@ -505,13 +508,12 @@ static void process_commits(struct rev_info *rev, const char *path,
} while ((commit = get_revision(rev)) != NULL);
}
-
-static int compare_tree_path(struct rev_info* revs,
- struct commit* c1, struct commit* c2)
+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->util;
+ const char *paths[2];
+ struct util_info *util = c2->util;
paths[0] = util->pathname;
paths[1] = NULL;
@@ -522,12 +524,11 @@ static int compare_tree_path(struct rev_info* revs,
return ret;
}
-
-static int same_tree_as_empty_path(struct rev_info *revs, struct tree* t1,
- const char* path)
+static int same_tree_as_empty_path(struct rev_info *revs, struct tree *t1,
+ const char *path)
{
int ret;
- const char* paths[2];
+ const char *paths[2];
paths[0] = path;
paths[1] = NULL;
@@ -538,9 +539,9 @@ static int same_tree_as_empty_path(struct rev_info *revs, struct tree* t1,
return ret;
}
-static const char* find_rename(struct commit* commit, struct commit* parent)
+static const char *find_rename(struct commit *commit, struct commit *parent)
{
- struct util_info* cutil = commit->util;
+ struct util_info *cutil = commit->util;
struct diff_options diff_opts;
const char *paths[1];
int i;
@@ -566,9 +567,11 @@ static const char* find_rename(struct commit* commit, struct commit* parent)
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 (p->status == 'R' &&
+ !strcmp(p->one->path, cutil->pathname)) {
if (DEBUG)
- printf("rename %s -> %s\n", p->one->path, p->two->path);
+ printf("rename %s -> %s\n",
+ p->one->path, p->two->path);
return p->two->path;
}
}
@@ -584,7 +587,7 @@ static void simplify_commit(struct rev_info *revs, struct commit *commit)
return;
if (!commit->parents) {
- struct util_info* util = commit->util;
+ struct util_info *util = commit->util;
if (!same_tree_as_empty_path(revs, commit->tree,
util->pathname))
commit->object.flags |= TREECHANGE;
@@ -610,17 +613,17 @@ static void simplify_commit(struct rev_info *revs, struct commit *commit)
case REV_TREE_NEW:
{
-
- struct util_info* util = commit->util;
+ struct util_info *util = commit->util;
if (revs->remove_empty_trees &&
same_tree_as_empty_path(revs, p->tree,
util->pathname)) {
- const char* new_name = find_rename(commit, p);
+ const char *new_name = find_rename(commit, p);
if (new_name) {
- struct util_info* putil = get_util(p);
+ struct util_info *putil = get_util(p);
if (!putil->pathname)
putil->pathname = xstrdup(new_name);
- } else {
+ }
+ else {
*pp = parent->next;
continue;
}
@@ -641,47 +644,106 @@ static void simplify_commit(struct rev_info *revs, struct commit *commit)
commit->object.flags |= TREECHANGE;
}
-
struct commit_info
{
- char* author;
- char* author_mail;
+ char *author;
+ char *author_mail;
unsigned long author_time;
- char* author_tz;
+ char *author_tz;
+
+ /* filled only when asked for details */
+ char *committer;
+ char *committer_mail;
+ unsigned long committer_time;
+ char *committer_tz;
+
+ char *summary;
};
-static void get_commit_info(struct commit* commit, struct commit_info* ret)
+static void get_ac_line(const char *inbuf, const char *what,
+ int bufsz, char *person, char **mail,
+ unsigned long *time, char **tz)
{
int len;
- char* tmp;
- static char author_buf[1024];
-
- tmp = strstr(commit->buffer, "\nauthor ") + 8;
- len = strchr(tmp, '\n') - tmp;
- ret->author = author_buf;
- memcpy(ret->author, tmp, len);
+ char *tmp, *endp;
+
+ tmp = strstr(inbuf, what);
+ if (!tmp)
+ goto error_out;
+ tmp += strlen(what);
+ endp = strchr(tmp, '\n');
+ if (!endp)
+ len = strlen(tmp);
+ else
+ len = endp - tmp;
+ if (bufsz <= len) {
+ error_out:
+ /* Ugh */
+ person = *mail = *tz = "(unknown)";
+ *time = 0;
+ return;
+ }
+ memcpy(person, tmp, len);
- tmp = ret->author;
+ tmp = person;
tmp += len;
*tmp = 0;
- while(*tmp != ' ')
+ while (*tmp != ' ')
tmp--;
- ret->author_tz = tmp+1;
+ *tz = tmp+1;
*tmp = 0;
- while(*tmp != ' ')
+ while (*tmp != ' ')
tmp--;
- ret->author_time = strtoul(tmp, NULL, 10);
+ *time = strtoul(tmp, NULL, 10);
*tmp = 0;
- while(*tmp != ' ')
+ while (*tmp != ' ')
tmp--;
- ret->author_mail = tmp + 1;
-
+ *mail = tmp + 1;
*tmp = 0;
}
-static const char* format_time(unsigned long time, const char* tz_str,
+static void get_commit_info(struct commit *commit, struct commit_info *ret, int detailed)
+{
+ int len;
+ char *tmp, *endp;
+ static char author_buf[1024];
+ static char committer_buf[1024];
+ static char summary_buf[1024];
+
+ ret->author = author_buf;
+ get_ac_line(commit->buffer, "\nauthor ",
+ sizeof(author_buf), author_buf, &ret->author_mail,
+ &ret->author_time, &ret->author_tz);
+
+ if (!detailed)
+ return;
+
+ ret->committer = committer_buf;
+ get_ac_line(commit->buffer, "\ncommitter ",
+ sizeof(committer_buf), committer_buf, &ret->committer_mail,
+ &ret->committer_time, &ret->committer_tz);
+
+ ret->summary = summary_buf;
+ tmp = strstr(commit->buffer, "\n\n");
+ if (!tmp) {
+ error_out:
+ sprintf(summary_buf, "(%s)", sha1_to_hex(commit->object.sha1));
+ return;
+ }
+ tmp += 2;
+ endp = strchr(tmp, '\n');
+ if (!endp)
+ goto error_out;
+ len = endp - tmp;
+ if (len >= sizeof(summary_buf))
+ goto error_out;
+ memcpy(summary_buf, tmp, len);
+ summary_buf[len] = 0;
+}
+
+static const char *format_time(unsigned long time, const char *tz_str,
int show_raw_time)
{
static char time_buf[128];
@@ -706,15 +768,15 @@ static const char* format_time(unsigned long time, const char* tz_str,
return time_buf;
}
-static void topo_setter(struct commit* c, void* data)
+static void topo_setter(struct commit *c, void *data)
{
- struct util_info* util = c->util;
+ struct util_info *util = c->util;
util->topo_data = data;
}
-static void* topo_getter(struct commit* c)
+static void *topo_getter(struct commit *c)
{
- struct util_info* util = c->util;
+ struct util_info *util = c->util;
return util->topo_data;
}
@@ -737,6 +799,101 @@ static int read_ancestry(const char *graft_file,
return 0;
}
+static int lineno_width(int lines)
+{
+ int i, width;
+
+ for (width = 1, i = 10; i <= lines + 1; width++)
+ i *= 10;
+ return width;
+}
+
+static int find_orig_linenum(struct util_info *u, int lineno)
+{
+ int i;
+
+ for (i = 0; i < u->num_lines; i++)
+ if (lineno == u->line_map[i])
+ return i + 1;
+ return 0;
+}
+
+static void emit_meta(struct commit *c, int lno,
+ int sha1_len, int compatibility, int porcelain,
+ int show_name, int show_number, int show_raw_time,
+ int longest_file, int longest_author,
+ int max_digits, int max_orig_digits)
+{
+ struct util_info *u;
+ int lineno;
+ struct commit_info ci;
+
+ u = c->util;
+ lineno = find_orig_linenum(u, lno);
+
+ if (porcelain) {
+ int group_size = -1;
+ struct commit *cc = (lno == 0) ? NULL : blame_lines[lno-1];
+ if (cc != c) {
+ /* This is the beginning of this group */
+ int i;
+ for (i = lno + 1; i < num_blame_lines; i++)
+ if (blame_lines[i] != c)
+ break;
+ group_size = i - lno;
+ }
+ if (0 < group_size)
+ printf("%s %d %d %d\n", sha1_to_hex(c->object.sha1),
+ lineno, lno + 1, group_size);
+ else
+ printf("%s %d %d\n", sha1_to_hex(c->object.sha1),
+ lineno, lno + 1);
+ if (!u->meta_given) {
+ get_commit_info(c, &ci, 1);
+ printf("author %s\n", ci.author);
+ printf("author-mail %s\n", ci.author_mail);
+ printf("author-time %lu\n", ci.author_time);
+ printf("author-tz %s\n", ci.author_tz);
+ printf("committer %s\n", ci.committer);
+ printf("committer-mail %s\n", ci.committer_mail);
+ printf("committer-time %lu\n", ci.committer_time);
+ printf("committer-tz %s\n", ci.committer_tz);
+ printf("filename ");
+ if (quote_c_style(u->pathname, NULL, NULL, 0))
+ quote_c_style(u->pathname, NULL, stdout, 0);
+ else
+ fputs(u->pathname, stdout);
+ printf("\nsummary %s\n", ci.summary);
+
+ u->meta_given = 1;
+ }
+ putchar('\t');
+ return;
+ }
+
+ get_commit_info(c, &ci, 0);
+ fwrite(sha1_to_hex(c->object.sha1), sha1_len, 1, stdout);
+ if (compatibility) {
+ printf("\t(%10s\t%10s\t%d)", ci.author,
+ format_time(ci.author_time, ci.author_tz,
+ show_raw_time),
+ lno + 1);
+ }
+ else {
+ if (show_name)
+ printf(" %-*.*s", longest_file, longest_file,
+ u->pathname);
+ if (show_number)
+ printf(" %*d", max_orig_digits,
+ lineno);
+ printf(" (%-*.*s %10s %*d) ",
+ longest_author, longest_author, ci.author,
+ format_time(ci.author_time, ci.author_tz,
+ show_raw_time),
+ max_digits, lno + 1);
+ }
+}
+
int main(int argc, const char **argv)
{
int i;
@@ -749,38 +906,43 @@ int main(int argc, const char **argv)
int compatibility = 0;
int show_raw_time = 0;
int options = 1;
- struct commit* start_commit;
+ struct commit *start_commit;
- const char* args[10];
+ const char *args[10];
struct rev_info rev;
struct commit_info ci;
const char *buf;
- int max_digits;
- int longest_file, longest_author;
- int found_rename;
+ int max_digits, max_orig_digits;
+ int longest_file, longest_author, longest_file_lines;
+ int show_name = 0;
+ int show_number = 0;
+ int porcelain = 0;
- const char* prefix = setup_git_directory();
+ const char *prefix = setup_git_directory();
git_config(git_default_config);
- for(i = 1; i < argc; i++) {
- if(options) {
- if(!strcmp(argv[i], "-h") ||
+ for (i = 1; i < argc; i++) {
+ if (options) {
+ if (!strcmp(argv[i], "-h") ||
!strcmp(argv[i], "--help"))
usage(blame_usage);
- else if(!strcmp(argv[i], "-l") ||
- !strcmp(argv[i], "--long")) {
+ if (!strcmp(argv[i], "-l") ||
+ !strcmp(argv[i], "--long")) {
sha1_len = 40;
continue;
- } else if(!strcmp(argv[i], "-c") ||
- !strcmp(argv[i], "--compatibility")) {
+ }
+ if (!strcmp(argv[i], "-c") ||
+ !strcmp(argv[i], "--compatibility")) {
compatibility = 1;
continue;
- } else if(!strcmp(argv[i], "-t") ||
- !strcmp(argv[i], "--time")) {
+ }
+ if (!strcmp(argv[i], "-t") ||
+ !strcmp(argv[i], "--time")) {
show_raw_time = 1;
continue;
- } else if(!strcmp(argv[i], "-S")) {
+ }
+ if (!strcmp(argv[i], "-S")) {
if (i + 1 < argc &&
!read_ancestry(argv[i + 1], &sha1_p)) {
compatibility = 1;
@@ -788,33 +950,51 @@ int main(int argc, const char **argv)
continue;
}
usage(blame_usage);
- } else if(!strcmp(argv[i], "--")) {
+ }
+ if (!strcmp(argv[i], "-f") ||
+ !strcmp(argv[i], "--show-name")) {
+ show_name = 1;
+ continue;
+ }
+ if (!strcmp(argv[i], "-n") ||
+ !strcmp(argv[i], "--show-number")) {
+ show_number = 1;
+ continue;
+ }
+ if (!strcmp(argv[i], "-p") ||
+ !strcmp(argv[i], "--porcelain")) {
+ porcelain = 1;
+ sha1_len = 40;
+ show_raw_time = 1;
+ continue;
+ }
+ if (!strcmp(argv[i], "--")) {
options = 0;
continue;
- } else if(argv[i][0] == '-')
+ }
+ if (argv[i][0] == '-')
usage(blame_usage);
- else
- options = 0;
+ options = 0;
}
- if(!options) {
- if(!filename)
+ if (!options) {
+ if (!filename)
filename = argv[i];
- else if(!commit)
+ else if (!commit)
commit = argv[i];
else
usage(blame_usage);
}
}
- if(!filename)
+ if (!filename)
usage(blame_usage);
if (commit && sha1_p)
usage(blame_usage);
- else if(!commit)
+ else if (!commit)
commit = "HEAD";
- if(prefix)
+ if (prefix)
sprintf(filename_buf, "%s%s", prefix, filename);
else
strcpy(filename_buf, filename);
@@ -832,7 +1012,6 @@ int main(int argc, const char **argv)
return 1;
}
-
init_revisions(&rev, setup_git_directory());
rev.remove_empty_trees = 1;
rev.topo_order = 1;
@@ -850,62 +1029,49 @@ int main(int argc, const char **argv)
prepare_revision_walk(&rev);
process_commits(&rev, filename, &initial);
+ for (i = 0; i < num_blame_lines; i++)
+ if (!blame_lines[i])
+ blame_lines[i] = initial;
+
buf = blame_contents;
- for (max_digits = 1, i = 10; i <= num_blame_lines + 1; max_digits++)
- i *= 10;
+ max_digits = lineno_width(num_blame_lines);
longest_file = 0;
longest_author = 0;
- found_rename = 0;
+ longest_file_lines = 0;
for (i = 0; i < num_blame_lines; i++) {
struct commit *c = blame_lines[i];
- struct util_info* u;
- if (!c)
- c = initial;
+ struct util_info *u;
u = c->util;
- if (!found_rename && strcmp(filename, u->pathname))
- found_rename = 1;
+ if (!show_name && strcmp(filename, u->pathname))
+ show_name = 1;
if (longest_file < strlen(u->pathname))
longest_file = strlen(u->pathname);
- get_commit_info(c, &ci);
+ if (longest_file_lines < u->num_lines)
+ longest_file_lines = u->num_lines;
+ get_commit_info(c, &ci, 0);
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;
+ max_orig_digits = lineno_width(longest_file_lines);
- if (!c)
- c = initial;
-
- u = c->util;
- get_commit_info(c, &ci);
- fwrite(sha1_to_hex(c->object.sha1), sha1_len, 1, stdout);
- if(compatibility) {
- printf("\t(%10s\t%10s\t%d)", ci.author,
- 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,
- show_raw_time),
- max_digits, i+1);
- }
+ for (i = 0; i < num_blame_lines; i++) {
+ emit_meta(blame_lines[i], i,
+ sha1_len, compatibility, porcelain,
+ show_name, show_number, show_raw_time,
+ longest_file, longest_author,
+ max_digits, max_orig_digits);
- if(i == num_blame_lines - 1) {
+ if (i == num_blame_lines - 1) {
fwrite(buf, blame_len - (buf - blame_contents),
1, stdout);
- if(blame_contents[blame_len-1] != '\n')
+ if (blame_contents[blame_len-1] != '\n')
putc('\n', stdout);
- } else {
- char* next_buf = strchr(buf, '\n') + 1;
+ }
+ else {
+ char *next_buf = strchr(buf, '\n') + 1;
fwrite(buf, next_buf - buf, 1, stdout);
buf = next_buf;
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-08 21:56:40 +0000