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-rw-r--r--builtin/blame.c1223
1 files changed, 1223 insertions, 0 deletions
diff --git a/builtin/blame.c b/builtin/blame.c
new file mode 100644
index 0000000..71f925e
--- /dev/null
+++ b/builtin/blame.c
@@ -0,0 +1,1223 @@
+/*
+ * Blame
+ *
+ * Copyright (c) 2006, 2014 by its authors
+ * See COPYING for licensing conditions
+ */
+
+#include "cache.h"
+#include "config.h"
+#include "color.h"
+#include "builtin.h"
+#include "repository.h"
+#include "commit.h"
+#include "diff.h"
+#include "revision.h"
+#include "quote.h"
+#include "string-list.h"
+#include "mailmap.h"
+#include "parse-options.h"
+#include "prio-queue.h"
+#include "utf8.h"
+#include "userdiff.h"
+#include "line-range.h"
+#include "line-log.h"
+#include "dir.h"
+#include "progress.h"
+#include "object-store.h"
+#include "blame.h"
+#include "refs.h"
+#include "tag.h"
+
+static char blame_usage[] = N_("git blame [<options>] [<rev-opts>] [<rev>] [--] <file>");
+static char annotate_usage[] = N_("git annotate [<options>] [<rev-opts>] [<rev>] [--] <file>");
+
+static const char *blame_opt_usage[] = {
+ blame_usage,
+ "",
+ N_("<rev-opts> are documented in git-rev-list(1)"),
+ NULL
+};
+
+static const char *annotate_opt_usage[] = {
+ annotate_usage,
+ "",
+ N_("<rev-opts> are documented in git-rev-list(1)"),
+ NULL
+};
+
+static int longest_file;
+static int longest_author;
+static int max_orig_digits;
+static int max_digits;
+static int max_score_digits;
+static int show_root;
+static int reverse;
+static int blank_boundary;
+static int incremental;
+static int xdl_opts;
+static int abbrev = -1;
+static int no_whole_file_rename;
+static int show_progress;
+static char repeated_meta_color[COLOR_MAXLEN];
+static int coloring_mode;
+static struct string_list ignore_revs_file_list = STRING_LIST_INIT_NODUP;
+static int mark_unblamable_lines;
+static int mark_ignored_lines;
+
+static struct date_mode blame_date_mode = { DATE_ISO8601 };
+static size_t blame_date_width;
+
+static struct string_list mailmap = STRING_LIST_INIT_NODUP;
+
+#ifndef DEBUG_BLAME
+#define DEBUG_BLAME 0
+#endif
+
+static unsigned blame_move_score;
+static unsigned blame_copy_score;
+
+/* Remember to update object flag allocation in object.h */
+#define METAINFO_SHOWN (1u<<12)
+#define MORE_THAN_ONE_PATH (1u<<13)
+
+struct progress_info {
+ struct progress *progress;
+ int blamed_lines;
+};
+
+static const char *nth_line_cb(void *data, long lno)
+{
+ return blame_nth_line((struct blame_scoreboard *)data, lno);
+}
+
+/*
+ * Information on commits, used for output.
+ */
+struct commit_info {
+ struct strbuf author;
+ struct strbuf author_mail;
+ timestamp_t author_time;
+ struct strbuf author_tz;
+
+ /* filled only when asked for details */
+ struct strbuf committer;
+ struct strbuf committer_mail;
+ timestamp_t committer_time;
+ struct strbuf committer_tz;
+
+ struct strbuf summary;
+};
+
+#define COMMIT_INFO_INIT { \
+ .author = STRBUF_INIT, \
+ .author_mail = STRBUF_INIT, \
+ .author_tz = STRBUF_INIT, \
+ .committer = STRBUF_INIT, \
+ .committer_mail = STRBUF_INIT, \
+ .committer_tz = STRBUF_INIT, \
+ .summary = STRBUF_INIT, \
+}
+
+/*
+ * Parse author/committer line in the commit object buffer
+ */
+static void get_ac_line(const char *inbuf, const char *what,
+ struct strbuf *name, struct strbuf *mail,
+ timestamp_t *time, struct strbuf *tz)
+{
+ struct ident_split ident;
+ size_t len, maillen, namelen;
+ char *tmp, *endp;
+ const char *namebuf, *mailbuf;
+
+ 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 (split_ident_line(&ident, tmp, len)) {
+ error_out:
+ /* Ugh */
+ tmp = "(unknown)";
+ strbuf_addstr(name, tmp);
+ strbuf_addstr(mail, tmp);
+ strbuf_addstr(tz, tmp);
+ *time = 0;
+ return;
+ }
+
+ namelen = ident.name_end - ident.name_begin;
+ namebuf = ident.name_begin;
+
+ maillen = ident.mail_end - ident.mail_begin;
+ mailbuf = ident.mail_begin;
+
+ if (ident.date_begin && ident.date_end)
+ *time = strtoul(ident.date_begin, NULL, 10);
+ else
+ *time = 0;
+
+ if (ident.tz_begin && ident.tz_end)
+ strbuf_add(tz, ident.tz_begin, ident.tz_end - ident.tz_begin);
+ else
+ strbuf_addstr(tz, "(unknown)");
+
+ /*
+ * Now, convert both name and e-mail using mailmap
+ */
+ map_user(&mailmap, &mailbuf, &maillen,
+ &namebuf, &namelen);
+
+ strbuf_addf(mail, "<%.*s>", (int)maillen, mailbuf);
+ strbuf_add(name, namebuf, namelen);
+}
+
+static void commit_info_destroy(struct commit_info *ci)
+{
+
+ strbuf_release(&ci->author);
+ strbuf_release(&ci->author_mail);
+ strbuf_release(&ci->author_tz);
+ strbuf_release(&ci->committer);
+ strbuf_release(&ci->committer_mail);
+ strbuf_release(&ci->committer_tz);
+ strbuf_release(&ci->summary);
+}
+
+static void get_commit_info(struct commit *commit,
+ struct commit_info *ret,
+ int detailed)
+{
+ int len;
+ const char *subject, *encoding;
+ const char *message;
+
+ encoding = get_log_output_encoding();
+ message = logmsg_reencode(commit, NULL, encoding);
+ get_ac_line(message, "\nauthor ",
+ &ret->author, &ret->author_mail,
+ &ret->author_time, &ret->author_tz);
+
+ if (!detailed) {
+ unuse_commit_buffer(commit, message);
+ return;
+ }
+
+ get_ac_line(message, "\ncommitter ",
+ &ret->committer, &ret->committer_mail,
+ &ret->committer_time, &ret->committer_tz);
+
+ len = find_commit_subject(message, &subject);
+ if (len)
+ strbuf_add(&ret->summary, subject, len);
+ else
+ strbuf_addf(&ret->summary, "(%s)", oid_to_hex(&commit->object.oid));
+
+ unuse_commit_buffer(commit, message);
+}
+
+/*
+ * Write out any suspect information which depends on the path. This must be
+ * handled separately from emit_one_suspect_detail(), because a given commit
+ * may have changes in multiple paths. So this needs to appear each time
+ * we mention a new group.
+ *
+ * To allow LF and other nonportable characters in pathnames,
+ * they are c-style quoted as needed.
+ */
+static void write_filename_info(struct blame_origin *suspect)
+{
+ if (suspect->previous) {
+ struct blame_origin *prev = suspect->previous;
+ printf("previous %s ", oid_to_hex(&prev->commit->object.oid));
+ write_name_quoted(prev->path, stdout, '\n');
+ }
+ printf("filename ");
+ write_name_quoted(suspect->path, stdout, '\n');
+}
+
+/*
+ * Porcelain/Incremental format wants to show a lot of details per
+ * commit. Instead of repeating this every line, emit it only once,
+ * the first time each commit appears in the output (unless the
+ * user has specifically asked for us to repeat).
+ */
+static int emit_one_suspect_detail(struct blame_origin *suspect, int repeat)
+{
+ struct commit_info ci = COMMIT_INFO_INIT;
+
+ if (!repeat && (suspect->commit->object.flags & METAINFO_SHOWN))
+ return 0;
+
+ suspect->commit->object.flags |= METAINFO_SHOWN;
+ get_commit_info(suspect->commit, &ci, 1);
+ printf("author %s\n", ci.author.buf);
+ printf("author-mail %s\n", ci.author_mail.buf);
+ printf("author-time %"PRItime"\n", ci.author_time);
+ printf("author-tz %s\n", ci.author_tz.buf);
+ printf("committer %s\n", ci.committer.buf);
+ printf("committer-mail %s\n", ci.committer_mail.buf);
+ printf("committer-time %"PRItime"\n", ci.committer_time);
+ printf("committer-tz %s\n", ci.committer_tz.buf);
+ printf("summary %s\n", ci.summary.buf);
+ if (suspect->commit->object.flags & UNINTERESTING)
+ printf("boundary\n");
+
+ commit_info_destroy(&ci);
+
+ return 1;
+}
+
+/*
+ * The blame_entry is found to be guilty for the range.
+ * Show it in incremental output.
+ */
+static void found_guilty_entry(struct blame_entry *ent, void *data)
+{
+ struct progress_info *pi = (struct progress_info *)data;
+
+ if (incremental) {
+ struct blame_origin *suspect = ent->suspect;
+
+ printf("%s %d %d %d\n",
+ oid_to_hex(&suspect->commit->object.oid),
+ ent->s_lno + 1, ent->lno + 1, ent->num_lines);
+ emit_one_suspect_detail(suspect, 0);
+ write_filename_info(suspect);
+ maybe_flush_or_die(stdout, "stdout");
+ }
+ pi->blamed_lines += ent->num_lines;
+ display_progress(pi->progress, pi->blamed_lines);
+}
+
+static const char *format_time(timestamp_t time, const char *tz_str,
+ int show_raw_time)
+{
+ static struct strbuf time_buf = STRBUF_INIT;
+
+ strbuf_reset(&time_buf);
+ if (show_raw_time) {
+ strbuf_addf(&time_buf, "%"PRItime" %s", time, tz_str);
+ }
+ else {
+ const char *time_str;
+ size_t time_width;
+ int tz;
+ tz = atoi(tz_str);
+ time_str = show_date(time, tz, &blame_date_mode);
+ strbuf_addstr(&time_buf, time_str);
+ /*
+ * Add space paddings to time_buf to display a fixed width
+ * string, and use time_width for display width calibration.
+ */
+ for (time_width = utf8_strwidth(time_str);
+ time_width < blame_date_width;
+ time_width++)
+ strbuf_addch(&time_buf, ' ');
+ }
+ return time_buf.buf;
+}
+
+#define OUTPUT_ANNOTATE_COMPAT (1U<<0)
+#define OUTPUT_LONG_OBJECT_NAME (1U<<1)
+#define OUTPUT_RAW_TIMESTAMP (1U<<2)
+#define OUTPUT_PORCELAIN (1U<<3)
+#define OUTPUT_SHOW_NAME (1U<<4)
+#define OUTPUT_SHOW_NUMBER (1U<<5)
+#define OUTPUT_SHOW_SCORE (1U<<6)
+#define OUTPUT_NO_AUTHOR (1U<<7)
+#define OUTPUT_SHOW_EMAIL (1U<<8)
+#define OUTPUT_LINE_PORCELAIN (1U<<9)
+#define OUTPUT_COLOR_LINE (1U<<10)
+#define OUTPUT_SHOW_AGE_WITH_COLOR (1U<<11)
+
+static void emit_porcelain_details(struct blame_origin *suspect, int repeat)
+{
+ if (emit_one_suspect_detail(suspect, repeat) ||
+ (suspect->commit->object.flags & MORE_THAN_ONE_PATH))
+ write_filename_info(suspect);
+}
+
+static void emit_porcelain(struct blame_scoreboard *sb, struct blame_entry *ent,
+ int opt)
+{
+ int repeat = opt & OUTPUT_LINE_PORCELAIN;
+ int cnt;
+ const char *cp;
+ struct blame_origin *suspect = ent->suspect;
+ char hex[GIT_MAX_HEXSZ + 1];
+
+ oid_to_hex_r(hex, &suspect->commit->object.oid);
+ printf("%s %d %d %d\n",
+ hex,
+ ent->s_lno + 1,
+ ent->lno + 1,
+ ent->num_lines);
+ emit_porcelain_details(suspect, repeat);
+
+ cp = blame_nth_line(sb, ent->lno);
+ for (cnt = 0; cnt < ent->num_lines; cnt++) {
+ char ch;
+ if (cnt) {
+ printf("%s %d %d\n", hex,
+ ent->s_lno + 1 + cnt,
+ ent->lno + 1 + cnt);
+ if (repeat)
+ emit_porcelain_details(suspect, 1);
+ }
+ putchar('\t');
+ do {
+ ch = *cp++;
+ putchar(ch);
+ } while (ch != '\n' &&
+ cp < sb->final_buf + sb->final_buf_size);
+ }
+
+ if (sb->final_buf_size && cp[-1] != '\n')
+ putchar('\n');
+}
+
+static struct color_field {
+ timestamp_t hop;
+ char col[COLOR_MAXLEN];
+} *colorfield;
+static int colorfield_nr, colorfield_alloc;
+
+static void parse_color_fields(const char *s)
+{
+ struct string_list l = STRING_LIST_INIT_DUP;
+ struct string_list_item *item;
+ enum { EXPECT_DATE, EXPECT_COLOR } next = EXPECT_COLOR;
+
+ colorfield_nr = 0;
+
+ /* Ideally this would be stripped and split at the same time? */
+ string_list_split(&l, s, ',', -1);
+ ALLOC_GROW(colorfield, colorfield_nr + 1, colorfield_alloc);
+
+ for_each_string_list_item(item, &l) {
+ switch (next) {
+ case EXPECT_DATE:
+ colorfield[colorfield_nr].hop = approxidate(item->string);
+ next = EXPECT_COLOR;
+ colorfield_nr++;
+ ALLOC_GROW(colorfield, colorfield_nr + 1, colorfield_alloc);
+ break;
+ case EXPECT_COLOR:
+ if (color_parse(item->string, colorfield[colorfield_nr].col))
+ die(_("expecting a color: %s"), item->string);
+ next = EXPECT_DATE;
+ break;
+ }
+ }
+
+ if (next == EXPECT_COLOR)
+ die(_("must end with a color"));
+
+ colorfield[colorfield_nr].hop = TIME_MAX;
+ string_list_clear(&l, 0);
+}
+
+static void setup_default_color_by_age(void)
+{
+ parse_color_fields("blue,12 month ago,white,1 month ago,red");
+}
+
+static void determine_line_heat(struct commit_info *ci, const char **dest_color)
+{
+ int i = 0;
+
+ while (i < colorfield_nr && ci->author_time > colorfield[i].hop)
+ i++;
+
+ *dest_color = colorfield[i].col;
+}
+
+static void emit_other(struct blame_scoreboard *sb, struct blame_entry *ent, int opt)
+{
+ int cnt;
+ const char *cp;
+ struct blame_origin *suspect = ent->suspect;
+ struct commit_info ci = COMMIT_INFO_INIT;
+ char hex[GIT_MAX_HEXSZ + 1];
+ int show_raw_time = !!(opt & OUTPUT_RAW_TIMESTAMP);
+ const char *default_color = NULL, *color = NULL, *reset = NULL;
+
+ get_commit_info(suspect->commit, &ci, 1);
+ oid_to_hex_r(hex, &suspect->commit->object.oid);
+
+ cp = blame_nth_line(sb, ent->lno);
+
+ if (opt & OUTPUT_SHOW_AGE_WITH_COLOR) {
+ determine_line_heat(&ci, &default_color);
+ color = default_color;
+ reset = GIT_COLOR_RESET;
+ }
+
+ for (cnt = 0; cnt < ent->num_lines; cnt++) {
+ char ch;
+ int length = (opt & OUTPUT_LONG_OBJECT_NAME) ? the_hash_algo->hexsz : abbrev;
+
+ if (opt & OUTPUT_COLOR_LINE) {
+ if (cnt > 0) {
+ color = repeated_meta_color;
+ reset = GIT_COLOR_RESET;
+ } else {
+ color = default_color ? default_color : NULL;
+ reset = default_color ? GIT_COLOR_RESET : NULL;
+ }
+ }
+ if (color)
+ fputs(color, stdout);
+
+ if (suspect->commit->object.flags & UNINTERESTING) {
+ if (blank_boundary)
+ memset(hex, ' ', length);
+ else if (!(opt & OUTPUT_ANNOTATE_COMPAT)) {
+ length--;
+ putchar('^');
+ }
+ }
+
+ if (mark_unblamable_lines && ent->unblamable) {
+ length--;
+ putchar('*');
+ }
+ if (mark_ignored_lines && ent->ignored) {
+ length--;
+ putchar('?');
+ }
+ printf("%.*s", length, hex);
+ if (opt & OUTPUT_ANNOTATE_COMPAT) {
+ const char *name;
+ if (opt & OUTPUT_SHOW_EMAIL)
+ name = ci.author_mail.buf;
+ else
+ name = ci.author.buf;
+ printf("\t(%10s\t%10s\t%d)", name,
+ format_time(ci.author_time, ci.author_tz.buf,
+ show_raw_time),
+ ent->lno + 1 + cnt);
+ } else {
+ if (opt & OUTPUT_SHOW_SCORE)
+ printf(" %*d %02d",
+ max_score_digits, ent->score,
+ ent->suspect->refcnt);
+ if (opt & OUTPUT_SHOW_NAME)
+ printf(" %-*.*s", longest_file, longest_file,
+ suspect->path);
+ if (opt & OUTPUT_SHOW_NUMBER)
+ printf(" %*d", max_orig_digits,
+ ent->s_lno + 1 + cnt);
+
+ if (!(opt & OUTPUT_NO_AUTHOR)) {
+ const char *name;
+ int pad;
+ if (opt & OUTPUT_SHOW_EMAIL)
+ name = ci.author_mail.buf;
+ else
+ name = ci.author.buf;
+ pad = longest_author - utf8_strwidth(name);
+ printf(" (%s%*s %10s",
+ name, pad, "",
+ format_time(ci.author_time,
+ ci.author_tz.buf,
+ show_raw_time));
+ }
+ printf(" %*d) ",
+ max_digits, ent->lno + 1 + cnt);
+ }
+ if (reset)
+ fputs(reset, stdout);
+ do {
+ ch = *cp++;
+ putchar(ch);
+ } while (ch != '\n' &&
+ cp < sb->final_buf + sb->final_buf_size);
+ }
+
+ if (sb->final_buf_size && cp[-1] != '\n')
+ putchar('\n');
+
+ commit_info_destroy(&ci);
+}
+
+static void output(struct blame_scoreboard *sb, int option)
+{
+ struct blame_entry *ent;
+
+ if (option & OUTPUT_PORCELAIN) {
+ for (ent = sb->ent; ent; ent = ent->next) {
+ int count = 0;
+ struct blame_origin *suspect;
+ struct commit *commit = ent->suspect->commit;
+ if (commit->object.flags & MORE_THAN_ONE_PATH)
+ continue;
+ for (suspect = get_blame_suspects(commit); suspect; suspect = suspect->next) {
+ if (suspect->guilty && count++) {
+ commit->object.flags |= MORE_THAN_ONE_PATH;
+ break;
+ }
+ }
+ }
+ }
+
+ for (ent = sb->ent; ent; ent = ent->next) {
+ if (option & OUTPUT_PORCELAIN)
+ emit_porcelain(sb, ent, option);
+ else {
+ emit_other(sb, ent, option);
+ }
+ }
+}
+
+/*
+ * Add phony grafts for use with -S; this is primarily to
+ * support git's cvsserver that wants to give a linear history
+ * to its clients.
+ */
+static int read_ancestry(const char *graft_file)
+{
+ FILE *fp = fopen_or_warn(graft_file, "r");
+ struct strbuf buf = STRBUF_INIT;
+ if (!fp)
+ return -1;
+ while (!strbuf_getwholeline(&buf, fp, '\n')) {
+ /* The format is just "Commit Parent1 Parent2 ...\n" */
+ struct commit_graft *graft = read_graft_line(&buf);
+ if (graft)
+ register_commit_graft(the_repository, graft, 0);
+ }
+ fclose(fp);
+ strbuf_release(&buf);
+ return 0;
+}
+
+static int update_auto_abbrev(int auto_abbrev, struct blame_origin *suspect)
+{
+ const char *uniq = find_unique_abbrev(&suspect->commit->object.oid,
+ auto_abbrev);
+ int len = strlen(uniq);
+ if (auto_abbrev < len)
+ return len;
+ return auto_abbrev;
+}
+
+/*
+ * How many columns do we need to show line numbers, authors,
+ * and filenames?
+ */
+static void find_alignment(struct blame_scoreboard *sb, int *option)
+{
+ int longest_src_lines = 0;
+ int longest_dst_lines = 0;
+ unsigned largest_score = 0;
+ struct blame_entry *e;
+ int compute_auto_abbrev = (abbrev < 0);
+ int auto_abbrev = DEFAULT_ABBREV;
+
+ for (e = sb->ent; e; e = e->next) {
+ struct blame_origin *suspect = e->suspect;
+ int num;
+
+ if (compute_auto_abbrev)
+ auto_abbrev = update_auto_abbrev(auto_abbrev, suspect);
+ if (strcmp(suspect->path, sb->path))
+ *option |= OUTPUT_SHOW_NAME;
+ num = strlen(suspect->path);
+ if (longest_file < num)
+ longest_file = num;
+ if (!(suspect->commit->object.flags & METAINFO_SHOWN)) {
+ struct commit_info ci = COMMIT_INFO_INIT;
+ suspect->commit->object.flags |= METAINFO_SHOWN;
+ get_commit_info(suspect->commit, &ci, 1);
+ if (*option & OUTPUT_SHOW_EMAIL)
+ num = utf8_strwidth(ci.author_mail.buf);
+ else
+ num = utf8_strwidth(ci.author.buf);
+ if (longest_author < num)
+ longest_author = num;
+ commit_info_destroy(&ci);
+ }
+ num = e->s_lno + e->num_lines;
+ if (longest_src_lines < num)
+ longest_src_lines = num;
+ num = e->lno + e->num_lines;
+ if (longest_dst_lines < num)
+ longest_dst_lines = num;
+ if (largest_score < blame_entry_score(sb, e))
+ largest_score = blame_entry_score(sb, e);
+ }
+ max_orig_digits = decimal_width(longest_src_lines);
+ max_digits = decimal_width(longest_dst_lines);
+ max_score_digits = decimal_width(largest_score);
+
+ if (compute_auto_abbrev)
+ /* one more abbrev length is needed for the boundary commit */
+ abbrev = auto_abbrev + 1;
+}
+
+static void sanity_check_on_fail(struct blame_scoreboard *sb, int baa)
+{
+ int opt = OUTPUT_SHOW_SCORE | OUTPUT_SHOW_NUMBER | OUTPUT_SHOW_NAME;
+ find_alignment(sb, &opt);
+ output(sb, opt);
+ die("Baa %d!", baa);
+}
+
+static unsigned parse_score(const char *arg)
+{
+ char *end;
+ unsigned long score = strtoul(arg, &end, 10);
+ if (*end)
+ return 0;
+ return score;
+}
+
+static const char *add_prefix(const char *prefix, const char *path)
+{
+ return prefix_path(prefix, prefix ? strlen(prefix) : 0, path);
+}
+
+static int git_blame_config(const char *var, const char *value, void *cb)
+{
+ if (!strcmp(var, "blame.showroot")) {
+ show_root = git_config_bool(var, value);
+ return 0;
+ }
+ if (!strcmp(var, "blame.blankboundary")) {
+ blank_boundary = git_config_bool(var, value);
+ return 0;
+ }
+ if (!strcmp(var, "blame.showemail")) {
+ int *output_option = cb;
+ if (git_config_bool(var, value))
+ *output_option |= OUTPUT_SHOW_EMAIL;
+ else
+ *output_option &= ~OUTPUT_SHOW_EMAIL;
+ return 0;
+ }
+ if (!strcmp(var, "blame.date")) {
+ if (!value)
+ return config_error_nonbool(var);
+ parse_date_format(value, &blame_date_mode);
+ return 0;
+ }
+ if (!strcmp(var, "blame.ignorerevsfile")) {
+ const char *str;
+ int ret;
+
+ ret = git_config_pathname(&str, var, value);
+ if (ret)
+ return ret;
+ string_list_insert(&ignore_revs_file_list, str);
+ return 0;
+ }
+ if (!strcmp(var, "blame.markunblamablelines")) {
+ mark_unblamable_lines = git_config_bool(var, value);
+ return 0;
+ }
+ if (!strcmp(var, "blame.markignoredlines")) {
+ mark_ignored_lines = git_config_bool(var, value);
+ return 0;
+ }
+ if (!strcmp(var, "color.blame.repeatedlines")) {
+ if (color_parse_mem(value, strlen(value), repeated_meta_color))
+ warning(_("invalid value for '%s': '%s'"),
+ "color.blame.repeatedLines", value);
+ return 0;
+ }
+ if (!strcmp(var, "color.blame.highlightrecent")) {
+ parse_color_fields(value);
+ return 0;
+ }
+
+ if (!strcmp(var, "blame.coloring")) {
+ if (!strcmp(value, "repeatedLines")) {
+ coloring_mode |= OUTPUT_COLOR_LINE;
+ } else if (!strcmp(value, "highlightRecent")) {
+ coloring_mode |= OUTPUT_SHOW_AGE_WITH_COLOR;
+ } else if (!strcmp(value, "none")) {
+ coloring_mode &= ~(OUTPUT_COLOR_LINE |
+ OUTPUT_SHOW_AGE_WITH_COLOR);
+ } else {
+ warning(_("invalid value for '%s': '%s'"),
+ "blame.coloring", value);
+ return 0;
+ }
+ }
+
+ if (git_diff_heuristic_config(var, value, cb) < 0)
+ return -1;
+ if (userdiff_config(var, value) < 0)
+ return -1;
+
+ return git_default_config(var, value, cb);
+}
+
+static int blame_copy_callback(const struct option *option, const char *arg, int unset)
+{
+ int *opt = option->value;
+
+ BUG_ON_OPT_NEG(unset);
+
+ /*
+ * -C enables copy from removed files;
+ * -C -C enables copy from existing files, but only
+ * when blaming a new file;
+ * -C -C -C enables copy from existing files for
+ * everybody
+ */
+ if (*opt & PICKAXE_BLAME_COPY_HARDER)
+ *opt |= PICKAXE_BLAME_COPY_HARDEST;
+ if (*opt & PICKAXE_BLAME_COPY)
+ *opt |= PICKAXE_BLAME_COPY_HARDER;
+ *opt |= PICKAXE_BLAME_COPY | PICKAXE_BLAME_MOVE;
+
+ if (arg)
+ blame_copy_score = parse_score(arg);
+ return 0;
+}
+
+static int blame_move_callback(const struct option *option, const char *arg, int unset)
+{
+ int *opt = option->value;
+
+ BUG_ON_OPT_NEG(unset);
+
+ *opt |= PICKAXE_BLAME_MOVE;
+
+ if (arg)
+ blame_move_score = parse_score(arg);
+ return 0;
+}
+
+static int is_a_rev(const char *name)
+{
+ struct object_id oid;
+
+ if (get_oid(name, &oid))
+ return 0;
+ return OBJ_NONE < oid_object_info(the_repository, &oid, NULL);
+}
+
+static int peel_to_commit_oid(struct object_id *oid_ret, void *cbdata)
+{
+ struct repository *r = ((struct blame_scoreboard *)cbdata)->repo;
+ struct object_id oid;
+
+ oidcpy(&oid, oid_ret);
+ while (1) {
+ struct object *obj;
+ int kind = oid_object_info(r, &oid, NULL);
+ if (kind == OBJ_COMMIT) {
+ oidcpy(oid_ret, &oid);
+ return 0;
+ }
+ if (kind != OBJ_TAG)
+ return -1;
+ obj = deref_tag(r, parse_object(r, &oid), NULL, 0);
+ if (!obj)
+ return -1;
+ oidcpy(&oid, &obj->oid);
+ }
+}
+
+static void build_ignorelist(struct blame_scoreboard *sb,
+ struct string_list *ignore_revs_file_list,
+ struct string_list *ignore_rev_list)
+{
+ struct string_list_item *i;
+ struct object_id oid;
+
+ oidset_init(&sb->ignore_list, 0);
+ for_each_string_list_item(i, ignore_revs_file_list) {
+ if (!strcmp(i->string, ""))
+ oidset_clear(&sb->ignore_list);
+ else
+ oidset_parse_file_carefully(&sb->ignore_list, i->string,
+ peel_to_commit_oid, sb);
+ }
+ for_each_string_list_item(i, ignore_rev_list) {
+ if (get_oid_committish(i->string, &oid) ||
+ peel_to_commit_oid(&oid, sb))
+ die(_("cannot find revision %s to ignore"), i->string);
+ oidset_insert(&sb->ignore_list, &oid);
+ }
+}
+
+int cmd_blame(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info revs;
+ const char *path;
+ struct blame_scoreboard sb;
+ struct blame_origin *o;
+ struct blame_entry *ent = NULL;
+ long dashdash_pos, lno;
+ struct progress_info pi = { NULL, 0 };
+
+ struct string_list range_list = STRING_LIST_INIT_NODUP;
+ struct string_list ignore_rev_list = STRING_LIST_INIT_NODUP;
+ int output_option = 0, opt = 0;
+ int show_stats = 0;
+ const char *revs_file = NULL;
+ const char *contents_from = NULL;
+ const struct option options[] = {
+ OPT_BOOL(0, "incremental", &incremental, N_("show blame entries as we find them, incrementally")),
+ OPT_BOOL('b', NULL, &blank_boundary, N_("do not show object names of boundary commits (Default: off)")),
+ OPT_BOOL(0, "root", &show_root, N_("do not treat root commits as boundaries (Default: off)")),
+ OPT_BOOL(0, "show-stats", &show_stats, N_("show work cost statistics")),
+ OPT_BOOL(0, "progress", &show_progress, N_("force progress reporting")),
+ OPT_BIT(0, "score-debug", &output_option, N_("show output score for blame entries"), OUTPUT_SHOW_SCORE),
+ OPT_BIT('f', "show-name", &output_option, N_("show original filename (Default: auto)"), OUTPUT_SHOW_NAME),
+ OPT_BIT('n', "show-number", &output_option, N_("show original linenumber (Default: off)"), OUTPUT_SHOW_NUMBER),
+ OPT_BIT('p', "porcelain", &output_option, N_("show in a format designed for machine consumption"), OUTPUT_PORCELAIN),
+ OPT_BIT(0, "line-porcelain", &output_option, N_("show porcelain format with per-line commit information"), OUTPUT_PORCELAIN|OUTPUT_LINE_PORCELAIN),
+ OPT_BIT('c', NULL, &output_option, N_("use the same output mode as git-annotate (Default: off)"), OUTPUT_ANNOTATE_COMPAT),
+ OPT_BIT('t', NULL, &output_option, N_("show raw timestamp (Default: off)"), OUTPUT_RAW_TIMESTAMP),
+ OPT_BIT('l', NULL, &output_option, N_("show long commit SHA1 (Default: off)"), OUTPUT_LONG_OBJECT_NAME),
+ OPT_BIT('s', NULL, &output_option, N_("suppress author name and timestamp (Default: off)"), OUTPUT_NO_AUTHOR),
+ OPT_BIT('e', "show-email", &output_option, N_("show author email instead of name (Default: off)"), OUTPUT_SHOW_EMAIL),
+ OPT_BIT('w', NULL, &xdl_opts, N_("ignore whitespace differences"), XDF_IGNORE_WHITESPACE),
+ OPT_STRING_LIST(0, "ignore-rev", &ignore_rev_list, N_("rev"), N_("ignore <rev> when blaming")),
+ OPT_STRING_LIST(0, "ignore-revs-file", &ignore_revs_file_list, N_("file"), N_("ignore revisions from <file>")),
+ OPT_BIT(0, "color-lines", &output_option, N_("color redundant metadata from previous line differently"), OUTPUT_COLOR_LINE),
+ OPT_BIT(0, "color-by-age", &output_option, N_("color lines by age"), OUTPUT_SHOW_AGE_WITH_COLOR),
+ OPT_BIT(0, "minimal", &xdl_opts, N_("spend extra cycles to find better match"), XDF_NEED_MINIMAL),
+ OPT_STRING('S', NULL, &revs_file, N_("file"), N_("use revisions from <file> instead of calling git-rev-list")),
+ OPT_STRING(0, "contents", &contents_from, N_("file"), N_("use <file>'s contents as the final image")),
+ OPT_CALLBACK_F('C', NULL, &opt, N_("score"), N_("find line copies within and across files"), PARSE_OPT_OPTARG, blame_copy_callback),
+ OPT_CALLBACK_F('M', NULL, &opt, N_("score"), N_("find line movements within and across files"), PARSE_OPT_OPTARG, blame_move_callback),
+ OPT_STRING_LIST('L', NULL, &range_list, N_("range"),
+ N_("process only line range <start>,<end> or function :<funcname>")),
+ OPT__ABBREV(&abbrev),
+ OPT_END()
+ };
+
+ struct parse_opt_ctx_t ctx;
+ int cmd_is_annotate = !strcmp(argv[0], "annotate");
+ struct range_set ranges;
+ unsigned int range_i;
+ long anchor;
+ const int hexsz = the_hash_algo->hexsz;
+ long num_lines = 0;
+ const char *str_usage = cmd_is_annotate ? annotate_usage : blame_usage;
+ const char **opt_usage = cmd_is_annotate ? annotate_opt_usage : blame_opt_usage;
+
+ setup_default_color_by_age();
+ git_config(git_blame_config, &output_option);
+ repo_init_revisions(the_repository, &revs, NULL);
+ revs.date_mode = blame_date_mode;
+ revs.diffopt.flags.allow_textconv = 1;
+ revs.diffopt.flags.follow_renames = 1;
+
+ save_commit_buffer = 0;
+ dashdash_pos = 0;
+ show_progress = -1;
+
+ parse_options_start(&ctx, argc, argv, prefix, options,
+ PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
+ for (;;) {
+ switch (parse_options_step(&ctx, options, opt_usage)) {
+ case PARSE_OPT_NON_OPTION:
+ case PARSE_OPT_UNKNOWN:
+ break;
+ case PARSE_OPT_HELP:
+ case PARSE_OPT_ERROR:
+ case PARSE_OPT_SUBCOMMAND:
+ exit(129);
+ case PARSE_OPT_COMPLETE:
+ exit(0);
+ case PARSE_OPT_DONE:
+ if (ctx.argv[0])
+ dashdash_pos = ctx.cpidx;
+ goto parse_done;
+ }
+
+ if (!strcmp(ctx.argv[0], "--reverse")) {
+ ctx.argv[0] = "--children";
+ reverse = 1;
+ }
+ parse_revision_opt(&revs, &ctx, options, opt_usage);
+ }
+parse_done:
+ revision_opts_finish(&revs);
+ no_whole_file_rename = !revs.diffopt.flags.follow_renames;
+ xdl_opts |= revs.diffopt.xdl_opts & XDF_INDENT_HEURISTIC;
+ revs.diffopt.flags.follow_renames = 0;
+ argc = parse_options_end(&ctx);
+
+ prepare_repo_settings(the_repository);
+ the_repository->settings.command_requires_full_index = 0;
+
+ if (incremental || (output_option & OUTPUT_PORCELAIN)) {
+ if (show_progress > 0)
+ die(_("--progress can't be used with --incremental or porcelain formats"));
+ show_progress = 0;
+ } else if (show_progress < 0)
+ show_progress = isatty(2);
+
+ if (0 < abbrev && abbrev < hexsz)
+ /* one more abbrev length is needed for the boundary commit */
+ abbrev++;
+ else if (!abbrev)
+ abbrev = hexsz;
+
+ if (revs_file && read_ancestry(revs_file))
+ die_errno("reading graft file '%s' failed", revs_file);
+
+ if (cmd_is_annotate) {
+ output_option |= OUTPUT_ANNOTATE_COMPAT;
+ blame_date_mode.type = DATE_ISO8601;
+ } else {
+ blame_date_mode = revs.date_mode;
+ }
+
+ /* The maximum width used to show the dates */
+ switch (blame_date_mode.type) {
+ case DATE_RFC2822:
+ blame_date_width = sizeof("Thu, 19 Oct 2006 16:00:04 -0700");
+ break;
+ case DATE_ISO8601_STRICT:
+ blame_date_width = sizeof("2006-10-19T16:00:04-07:00");
+ break;
+ case DATE_ISO8601:
+ blame_date_width = sizeof("2006-10-19 16:00:04 -0700");
+ break;
+ case DATE_RAW:
+ blame_date_width = sizeof("1161298804 -0700");
+ break;
+ case DATE_UNIX:
+ blame_date_width = sizeof("1161298804");
+ break;
+ case DATE_SHORT:
+ blame_date_width = sizeof("2006-10-19");
+ break;
+ case DATE_RELATIVE:
+ /*
+ * TRANSLATORS: This string is used to tell us the
+ * maximum display width for a relative timestamp in
+ * "git blame" output. For C locale, "4 years, 11
+ * months ago", which takes 22 places, is the longest
+ * among various forms of relative timestamps, but
+ * your language may need more or fewer display
+ * columns.
+ */
+ blame_date_width = utf8_strwidth(_("4 years, 11 months ago")) + 1; /* add the null */
+ break;
+ case DATE_HUMAN:
+ /* If the year is shown, no time is shown */
+ blame_date_width = sizeof("Thu Oct 19 16:00");
+ break;
+ case DATE_NORMAL:
+ blame_date_width = sizeof("Thu Oct 19 16:00:04 2006 -0700");
+ break;
+ case DATE_STRFTIME:
+ blame_date_width = strlen(show_date(0, 0, &blame_date_mode)) + 1; /* add the null */
+ break;
+ }
+ blame_date_width -= 1; /* strip the null */
+
+ if (revs.diffopt.flags.find_copies_harder)
+ opt |= (PICKAXE_BLAME_COPY | PICKAXE_BLAME_MOVE |
+ PICKAXE_BLAME_COPY_HARDER);
+
+ /*
+ * We have collected options unknown to us in argv[1..unk]
+ * which are to be passed to revision machinery if we are
+ * going to do the "bottom" processing.
+ *
+ * The remaining are:
+ *
+ * (1) if dashdash_pos != 0, it is either
+ * "blame [revisions] -- <path>" or
+ * "blame -- <path> <rev>"
+ *
+ * (2) otherwise, it is one of the two:
+ * "blame [revisions] <path>"
+ * "blame <path> <rev>"
+ *
+ * Note that we must strip out <path> from the arguments: we do not
+ * want the path pruning but we may want "bottom" processing.
+ */
+ if (dashdash_pos) {
+ switch (argc - dashdash_pos - 1) {
+ case 2: /* (1b) */
+ if (argc != 4)
+ usage_with_options(opt_usage, options);
+ /* reorder for the new way: <rev> -- <path> */
+ argv[1] = argv[3];
+ argv[3] = argv[2];
+ argv[2] = "--";
+ /* FALLTHROUGH */
+ case 1: /* (1a) */
+ path = add_prefix(prefix, argv[--argc]);
+ argv[argc] = NULL;
+ break;
+ default:
+ usage_with_options(opt_usage, options);
+ }
+ } else {
+ if (argc < 2)
+ usage_with_options(opt_usage, options);
+ if (argc == 3 && is_a_rev(argv[argc - 1])) { /* (2b) */
+ path = add_prefix(prefix, argv[1]);
+ argv[1] = argv[2];
+ } else { /* (2a) */
+ if (argc == 2 && is_a_rev(argv[1]) && !get_git_work_tree())
+ die("missing <path> to blame");
+ path = add_prefix(prefix, argv[argc - 1]);
+ }
+ argv[argc - 1] = "--";
+ }
+
+ revs.disable_stdin = 1;
+ setup_revisions(argc, argv, &revs, NULL);
+ if (!revs.pending.nr && is_bare_repository()) {
+ struct commit *head_commit;
+ struct object_id head_oid;
+
+ if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
+ &head_oid, NULL) ||
+ !(head_commit = lookup_commit_reference_gently(revs.repo,
+ &head_oid, 1)))
+ die("no such ref: HEAD");
+
+ add_pending_object(&revs, &head_commit->object, "HEAD");
+ }
+
+ init_scoreboard(&sb);
+ sb.revs = &revs;
+ sb.contents_from = contents_from;
+ sb.reverse = reverse;
+ sb.repo = the_repository;
+ sb.path = path;
+ build_ignorelist(&sb, &ignore_revs_file_list, &ignore_rev_list);
+ string_list_clear(&ignore_revs_file_list, 0);
+ string_list_clear(&ignore_rev_list, 0);
+ setup_scoreboard(&sb, &o);
+
+ /*
+ * Changed-path Bloom filters are disabled when looking
+ * for copies.
+ */
+ if (!(opt & PICKAXE_BLAME_COPY))
+ setup_blame_bloom_data(&sb);
+
+ lno = sb.num_lines;
+
+ if (lno && !range_list.nr)
+ string_list_append(&range_list, "1");
+
+ anchor = 1;
+ range_set_init(&ranges, range_list.nr);
+ for (range_i = 0; range_i < range_list.nr; ++range_i) {
+ long bottom, top;
+ if (parse_range_arg(range_list.items[range_i].string,
+ nth_line_cb, &sb, lno, anchor,
+ &bottom, &top, sb.path,
+ the_repository->index))
+ usage(str_usage);
+ if ((!lno && (top || bottom)) || lno < bottom)
+ die(Q_("file %s has only %lu line",
+ "file %s has only %lu lines",
+ lno), sb.path, lno);
+ if (bottom < 1)
+ bottom = 1;
+ if (top < 1 || lno < top)
+ top = lno;
+ bottom--;
+ range_set_append_unsafe(&ranges, bottom, top);
+ anchor = top + 1;
+ }
+ sort_and_merge_range_set(&ranges);
+
+ for (range_i = ranges.nr; range_i > 0; --range_i) {
+ const struct range *r = &ranges.ranges[range_i - 1];
+ ent = blame_entry_prepend(ent, r->start, r->end, o);
+ num_lines += (r->end - r->start);
+ }
+ if (!num_lines)
+ num_lines = sb.num_lines;
+
+ o->suspects = ent;
+ prio_queue_put(&sb.commits, o->commit);
+
+ blame_origin_decref(o);
+
+ range_set_release(&ranges);
+ string_list_clear(&range_list, 0);
+
+ sb.ent = NULL;
+
+ if (blame_move_score)
+ sb.move_score = blame_move_score;
+ if (blame_copy_score)
+ sb.copy_score = blame_copy_score;
+
+ sb.debug = DEBUG_BLAME;
+ sb.on_sanity_fail = &sanity_check_on_fail;
+
+ sb.show_root = show_root;
+ sb.xdl_opts = xdl_opts;
+ sb.no_whole_file_rename = no_whole_file_rename;
+
+ read_mailmap(&mailmap);
+
+ sb.found_guilty_entry = &found_guilty_entry;
+ sb.found_guilty_entry_data = &pi;
+ if (show_progress)
+ pi.progress = start_delayed_progress(_("Blaming lines"), num_lines);
+
+ assign_blame(&sb, opt);
+
+ stop_progress(&pi.progress);
+
+ if (!incremental)
+ setup_pager();
+ else
+ goto cleanup;
+
+ blame_sort_final(&sb);
+
+ blame_coalesce(&sb);
+
+ if (!(output_option & (OUTPUT_COLOR_LINE | OUTPUT_SHOW_AGE_WITH_COLOR)))
+ output_option |= coloring_mode;
+
+ if (!(output_option & OUTPUT_PORCELAIN)) {
+ find_alignment(&sb, &output_option);
+ if (!*repeated_meta_color &&
+ (output_option & OUTPUT_COLOR_LINE))
+ xsnprintf(repeated_meta_color,
+ sizeof(repeated_meta_color),
+ "%s", GIT_COLOR_CYAN);
+ }
+ if (output_option & OUTPUT_ANNOTATE_COMPAT)
+ output_option &= ~(OUTPUT_COLOR_LINE | OUTPUT_SHOW_AGE_WITH_COLOR);
+
+ output(&sb, output_option);
+ free((void *)sb.final_buf);
+ for (ent = sb.ent; ent; ) {
+ struct blame_entry *e = ent->next;
+ free(ent);
+ ent = e;
+ }
+
+ if (show_stats) {
+ printf("num read blob: %d\n", sb.num_read_blob);
+ printf("num get patch: %d\n", sb.num_get_patch);
+ printf("num commits: %d\n", sb.num_commits);
+ }
+
+cleanup:
+ cleanup_scoreboard(&sb);
+ release_revisions(&revs);
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-08 21:17:16 +0000