Andrew's git - gitweb.git/blob

482402d2838ce3a8f8700dea47afc1cdc37f38e3
   1#include "cache.h"
   2#include "commit.h"
   3#include "utf8.h"
   4#include "diff.h"
   5#include "revision.h"
   6#include "string-list.h"
   7#include "mailmap.h"
   8#include "log-tree.h"
   9#include "notes.h"
  10#include "color.h"
  11#include "reflog-walk.h"
  12#include "gpg-interface.h"
  13
  14static char *user_format;
  15static struct cmt_fmt_map {
  16        const char *name;
  17        enum cmit_fmt format;
  18        int is_tformat;
  19        int is_alias;
  20        const char *user_format;
  21} *commit_formats;
  22static size_t builtin_formats_len;
  23static size_t commit_formats_len;
  24static size_t commit_formats_alloc;
  25static struct cmt_fmt_map *find_commit_format(const char *sought);
  26
  27static void save_user_format(struct rev_info *rev, const char *cp, int is_tformat)
  28{
  29        free(user_format);
  30        user_format = xstrdup(cp);
  31        if (is_tformat)
  32                rev->use_terminator = 1;
  33        rev->commit_format = CMIT_FMT_USERFORMAT;
  34}
  35
  36static int git_pretty_formats_config(const char *var, const char *value, void *cb)
  37{
  38        struct cmt_fmt_map *commit_format = NULL;
  39        const char *name;
  40        const char *fmt;
  41        int i;
  42
  43        if (prefixcmp(var, "pretty."))
  44                return 0;
  45
  46        name = var + strlen("pretty.");
  47        for (i = 0; i < builtin_formats_len; i++) {
  48                if (!strcmp(commit_formats[i].name, name))
  49                        return 0;
  50        }
  51
  52        for (i = builtin_formats_len; i < commit_formats_len; i++) {
  53                if (!strcmp(commit_formats[i].name, name)) {
  54                        commit_format = &commit_formats[i];
  55                        break;
  56                }
  57        }
  58
  59        if (!commit_format) {
  60                ALLOC_GROW(commit_formats, commit_formats_len+1,
  61                           commit_formats_alloc);
  62                commit_format = &commit_formats[commit_formats_len];
  63                memset(commit_format, 0, sizeof(*commit_format));
  64                commit_formats_len++;
  65        }
  66
  67        commit_format->name = xstrdup(name);
  68        commit_format->format = CMIT_FMT_USERFORMAT;
  69        git_config_string(&fmt, var, value);
  70        if (!prefixcmp(fmt, "format:") || !prefixcmp(fmt, "tformat:")) {
  71                commit_format->is_tformat = fmt[0] == 't';
  72                fmt = strchr(fmt, ':') + 1;
  73        } else if (strchr(fmt, '%'))
  74                commit_format->is_tformat = 1;
  75        else
  76                commit_format->is_alias = 1;
  77        commit_format->user_format = fmt;
  78
  79        return 0;
  80}
  81
  82static void setup_commit_formats(void)
  83{
  84        struct cmt_fmt_map builtin_formats[] = {
  85                { "raw",        CMIT_FMT_RAW,           0 },
  86                { "medium",     CMIT_FMT_MEDIUM,        0 },
  87                { "short",      CMIT_FMT_SHORT,         0 },
  88                { "email",      CMIT_FMT_EMAIL,         0 },
  89                { "fuller",     CMIT_FMT_FULLER,        0 },
  90                { "full",       CMIT_FMT_FULL,          0 },
  91                { "oneline",    CMIT_FMT_ONELINE,       1 }
  92        };
  93        commit_formats_len = ARRAY_SIZE(builtin_formats);
  94        builtin_formats_len = commit_formats_len;
  95        ALLOC_GROW(commit_formats, commit_formats_len, commit_formats_alloc);
  96        memcpy(commit_formats, builtin_formats,
  97               sizeof(*builtin_formats)*ARRAY_SIZE(builtin_formats));
  98
  99        git_config(git_pretty_formats_config, NULL);
 100}
 101
 102static struct cmt_fmt_map *find_commit_format_recursive(const char *sought,
 103                                                        const char *original,
 104                                                        int num_redirections)
 105{
 106        struct cmt_fmt_map *found = NULL;
 107        size_t found_match_len = 0;
 108        int i;
 109
 110        if (num_redirections >= commit_formats_len)
 111                die("invalid --pretty format: "
 112                    "'%s' references an alias which points to itself",
 113                    original);
 114
 115        for (i = 0; i < commit_formats_len; i++) {
 116                size_t match_len;
 117
 118                if (prefixcmp(commit_formats[i].name, sought))
 119                        continue;
 120
 121                match_len = strlen(commit_formats[i].name);
 122                if (found == NULL || found_match_len > match_len) {
 123                        found = &commit_formats[i];
 124                        found_match_len = match_len;
 125                }
 126        }
 127
 128        if (found && found->is_alias) {
 129                found = find_commit_format_recursive(found->user_format,
 130                                                     original,
 131                                                     num_redirections+1);
 132        }
 133
 134        return found;
 135}
 136
 137static struct cmt_fmt_map *find_commit_format(const char *sought)
 138{
 139        if (!commit_formats)
 140                setup_commit_formats();
 141
 142        return find_commit_format_recursive(sought, sought, 0);
 143}
 144
 145void get_commit_format(const char *arg, struct rev_info *rev)
 146{
 147        struct cmt_fmt_map *commit_format;
 148
 149        rev->use_terminator = 0;
 150        if (!arg || !*arg) {
 151                rev->commit_format = CMIT_FMT_DEFAULT;
 152                return;
 153        }
 154        if (!prefixcmp(arg, "format:") || !prefixcmp(arg, "tformat:")) {
 155                save_user_format(rev, strchr(arg, ':') + 1, arg[0] == 't');
 156                return;
 157        }
 158
 159        if (strchr(arg, '%')) {
 160                save_user_format(rev, arg, 1);
 161                return;
 162        }
 163
 164        commit_format = find_commit_format(arg);
 165        if (!commit_format)
 166                die("invalid --pretty format: %s", arg);
 167
 168        rev->commit_format = commit_format->format;
 169        rev->use_terminator = commit_format->is_tformat;
 170        if (commit_format->format == CMIT_FMT_USERFORMAT) {
 171                save_user_format(rev, commit_format->user_format,
 172                                 commit_format->is_tformat);
 173        }
 174}
 175
 176/*
 177 * Generic support for pretty-printing the header
 178 */
 179static int get_one_line(const char *msg)
 180{
 181        int ret = 0;
 182
 183        for (;;) {
 184                char c = *msg++;
 185                if (!c)
 186                        break;
 187                ret++;
 188                if (c == '\n')
 189                        break;
 190        }
 191        return ret;
 192}
 193
 194/* High bit set, or ISO-2022-INT */
 195static int non_ascii(int ch)
 196{
 197        return !isascii(ch) || ch == '\033';
 198}
 199
 200int has_non_ascii(const char *s)
 201{
 202        int ch;
 203        if (!s)
 204                return 0;
 205        while ((ch = *s++) != '\0') {
 206                if (non_ascii(ch))
 207                        return 1;
 208        }
 209        return 0;
 210}
 211
 212static int is_rfc822_special(char ch)
 213{
 214        switch (ch) {
 215        case '(':
 216        case ')':
 217        case '<':
 218        case '>':
 219        case '[':
 220        case ']':
 221        case ':':
 222        case ';':
 223        case '@':
 224        case ',':
 225        case '.':
 226        case '"':
 227        case '\\':
 228                return 1;
 229        default:
 230                return 0;
 231        }
 232}
 233
 234static int has_rfc822_specials(const char *s, int len)
 235{
 236        int i;
 237        for (i = 0; i < len; i++)
 238                if (is_rfc822_special(s[i]))
 239                        return 1;
 240        return 0;
 241}
 242
 243static int last_line_length(struct strbuf *sb)
 244{
 245        int i;
 246
 247        /* How many bytes are already used on the last line? */
 248        for (i = sb->len - 1; i >= 0; i--)
 249                if (sb->buf[i] == '\n')
 250                        break;
 251        return sb->len - (i + 1);
 252}
 253
 254static void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
 255{
 256        int i;
 257
 258        /* just a guess, we may have to also backslash-quote */
 259        strbuf_grow(out, len + 2);
 260
 261        strbuf_addch(out, '"');
 262        for (i = 0; i < len; i++) {
 263                switch (s[i]) {
 264                case '"':
 265                case '\\':
 266                        strbuf_addch(out, '\\');
 267                        /* fall through */
 268                default:
 269                        strbuf_addch(out, s[i]);
 270                }
 271        }
 272        strbuf_addch(out, '"');
 273}
 274
 275static int is_rfc2047_special(char ch)
 276{
 277        if (ch == ' ' || ch == '\n')
 278                return 1;
 279
 280        return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_'));
 281}
 282
 283static void add_rfc2047(struct strbuf *sb, const char *line, int len,
 284                       const char *encoding)
 285{
 286        static const int max_length = 78; /* per rfc2822 */
 287        static const int max_encoded_length = 76; /* per rfc2047 */
 288        int i;
 289        int line_len = last_line_length(sb);
 290
 291        for (i = 0; i < len; i++) {
 292                int ch = line[i];
 293                if (non_ascii(ch) || ch == '\n')
 294                        goto needquote;
 295                if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
 296                        goto needquote;
 297        }
 298        strbuf_add_wrapped_bytes(sb, line, len, -line_len, 1, max_length);
 299        return;
 300
 301needquote:
 302        strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
 303        strbuf_addf(sb, "=?%s?q?", encoding);
 304        line_len += strlen(encoding) + 5; /* 5 for =??q? */
 305        for (i = 0; i < len; i++) {
 306                unsigned ch = line[i] & 0xFF;
 307                int is_special = is_rfc2047_special(ch);
 308
 309                /*
 310                 * According to RFC 2047, we could encode the special character
 311                 * ' ' (space) with '_' (underscore) for readability. But many
 312                 * programs do not understand this and just leave the
 313                 * underscore in place. Thus, we do nothing special here, which
 314                 * causes ' ' to be encoded as '=20', avoiding this problem.
 315                 */
 316
 317                if (line_len + 2 + (is_special ? 3 : 1) > max_encoded_length) {
 318                        strbuf_addf(sb, "?=\n =?%s?q?", encoding);
 319                        line_len = strlen(encoding) + 5 + 1; /* =??q? plus SP */
 320                }
 321
 322                if (is_special) {
 323                        strbuf_addf(sb, "=%02X", ch);
 324                        line_len += 3;
 325                } else {
 326                        strbuf_addch(sb, ch);
 327                        line_len++;
 328                }
 329        }
 330        strbuf_addstr(sb, "?=");
 331}
 332
 333void pp_user_info(const struct pretty_print_context *pp,
 334                  const char *what, struct strbuf *sb,
 335                  const char *line, const char *encoding)
 336{
 337        char *date;
 338        int namelen;
 339        unsigned long time;
 340        int tz;
 341
 342        if (pp->fmt == CMIT_FMT_ONELINE)
 343                return;
 344        date = strchr(line, '>');
 345        if (!date)
 346                return;
 347        namelen = ++date - line;
 348        time = strtoul(date, &date, 10);
 349        tz = strtol(date, NULL, 10);
 350
 351        if (pp->fmt == CMIT_FMT_EMAIL) {
 352                char *name_tail = strchr(line, '<');
 353                int display_name_length;
 354                if (!name_tail)
 355                        return;
 356                while (line < name_tail && isspace(name_tail[-1]))
 357                        name_tail--;
 358                display_name_length = name_tail - line;
 359                strbuf_addstr(sb, "From: ");
 360                if (!has_rfc822_specials(line, display_name_length)) {
 361                        add_rfc2047(sb, line, display_name_length, encoding);
 362                } else {
 363                        struct strbuf quoted = STRBUF_INIT;
 364                        add_rfc822_quoted(&quoted, line, display_name_length);
 365                        add_rfc2047(sb, quoted.buf, quoted.len, encoding);
 366                        strbuf_release(&quoted);
 367                }
 368                if (namelen - display_name_length + last_line_length(sb) > 78) {
 369                        strbuf_addch(sb, '\n');
 370                        if (!isspace(name_tail[0]))
 371                                strbuf_addch(sb, ' ');
 372                }
 373                strbuf_add(sb, name_tail, namelen - display_name_length);
 374                strbuf_addch(sb, '\n');
 375        } else {
 376                strbuf_addf(sb, "%s: %.*s%.*s\n", what,
 377                              (pp->fmt == CMIT_FMT_FULLER) ? 4 : 0,
 378                              "    ", namelen, line);
 379        }
 380        switch (pp->fmt) {
 381        case CMIT_FMT_MEDIUM:
 382                strbuf_addf(sb, "Date:   %s\n", show_date(time, tz, pp->date_mode));
 383                break;
 384        case CMIT_FMT_EMAIL:
 385                strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822));
 386                break;
 387        case CMIT_FMT_FULLER:
 388                strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, pp->date_mode));
 389                break;
 390        default:
 391                /* notin' */
 392                break;
 393        }
 394}
 395
 396static int is_empty_line(const char *line, int *len_p)
 397{
 398        int len = *len_p;
 399        while (len && isspace(line[len-1]))
 400                len--;
 401        *len_p = len;
 402        return !len;
 403}
 404
 405static const char *skip_empty_lines(const char *msg)
 406{
 407        for (;;) {
 408                int linelen = get_one_line(msg);
 409                int ll = linelen;
 410                if (!linelen)
 411                        break;
 412                if (!is_empty_line(msg, &ll))
 413                        break;
 414                msg += linelen;
 415        }
 416        return msg;
 417}
 418
 419static void add_merge_info(const struct pretty_print_context *pp,
 420                           struct strbuf *sb, const struct commit *commit)
 421{
 422        struct commit_list *parent = commit->parents;
 423
 424        if ((pp->fmt == CMIT_FMT_ONELINE) || (pp->fmt == CMIT_FMT_EMAIL) ||
 425            !parent || !parent->next)
 426                return;
 427
 428        strbuf_addstr(sb, "Merge:");
 429
 430        while (parent) {
 431                struct commit *p = parent->item;
 432                const char *hex = NULL;
 433                if (pp->abbrev)
 434                        hex = find_unique_abbrev(p->object.sha1, pp->abbrev);
 435                if (!hex)
 436                        hex = sha1_to_hex(p->object.sha1);
 437                parent = parent->next;
 438
 439                strbuf_addf(sb, " %s", hex);
 440        }
 441        strbuf_addch(sb, '\n');
 442}
 443
 444static char *get_header(const struct commit *commit, const char *key)
 445{
 446        int key_len = strlen(key);
 447        const char *line = commit->buffer;
 448
 449        while (line) {
 450                const char *eol = strchr(line, '\n'), *next;
 451
 452                if (line == eol)
 453                        return NULL;
 454                if (!eol) {
 455                        warning("malformed commit (header is missing newline): %s",
 456                                sha1_to_hex(commit->object.sha1));
 457                        eol = line + strlen(line);
 458                        next = NULL;
 459                } else
 460                        next = eol + 1;
 461                if (eol - line > key_len &&
 462                    !strncmp(line, key, key_len) &&
 463                    line[key_len] == ' ') {
 464                        return xmemdupz(line + key_len + 1, eol - line - key_len - 1);
 465                }
 466                line = next;
 467        }
 468        return NULL;
 469}
 470
 471static char *replace_encoding_header(char *buf, const char *encoding)
 472{
 473        struct strbuf tmp = STRBUF_INIT;
 474        size_t start, len;
 475        char *cp = buf;
 476
 477        /* guess if there is an encoding header before a \n\n */
 478        while (strncmp(cp, "encoding ", strlen("encoding "))) {
 479                cp = strchr(cp, '\n');
 480                if (!cp || *++cp == '\n')
 481                        return buf;
 482        }
 483        start = cp - buf;
 484        cp = strchr(cp, '\n');
 485        if (!cp)
 486                return buf; /* should not happen but be defensive */
 487        len = cp + 1 - (buf + start);
 488
 489        strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
 490        if (is_encoding_utf8(encoding)) {
 491                /* we have re-coded to UTF-8; drop the header */
 492                strbuf_remove(&tmp, start, len);
 493        } else {
 494                /* just replaces XXXX in 'encoding XXXX\n' */
 495                strbuf_splice(&tmp, start + strlen("encoding "),
 496                                          len - strlen("encoding \n"),
 497                                          encoding, strlen(encoding));
 498        }
 499        return strbuf_detach(&tmp, NULL);
 500}
 501
 502char *logmsg_reencode(const struct commit *commit,
 503                      const char *output_encoding)
 504{
 505        static const char *utf8 = "UTF-8";
 506        const char *use_encoding;
 507        char *encoding;
 508        char *out;
 509
 510        if (!*output_encoding)
 511                return NULL;
 512        encoding = get_header(commit, "encoding");
 513        use_encoding = encoding ? encoding : utf8;
 514        if (!strcmp(use_encoding, output_encoding))
 515                if (encoding) /* we'll strip encoding header later */
 516                        out = xstrdup(commit->buffer);
 517                else
 518                        return NULL; /* nothing to do */
 519        else
 520                out = reencode_string(commit->buffer,
 521                                      output_encoding, use_encoding);
 522        if (out)
 523                out = replace_encoding_header(out, output_encoding);
 524
 525        free(encoding);
 526        return out;
 527}
 528
 529static int mailmap_name(char *email, int email_len, char *name, int name_len)
 530{
 531        static struct string_list *mail_map;
 532        if (!mail_map) {
 533                mail_map = xcalloc(1, sizeof(*mail_map));
 534                read_mailmap(mail_map, NULL);
 535        }
 536        return mail_map->nr && map_user(mail_map, email, email_len, name, name_len);
 537}
 538
 539static size_t format_person_part(struct strbuf *sb, char part,
 540                                 const char *msg, int len, enum date_mode dmode)
 541{
 542        /* currently all placeholders have same length */
 543        const int placeholder_len = 2;
 544        int tz;
 545        unsigned long date = 0;
 546        char person_name[1024];
 547        char person_mail[1024];
 548        struct ident_split s;
 549        const char *name_start, *name_end, *mail_start, *mail_end;
 550
 551        if (split_ident_line(&s, msg, len) < 0)
 552                goto skip;
 553
 554        name_start = s.name_begin;
 555        name_end = s.name_end;
 556        mail_start = s.mail_begin;
 557        mail_end = s.mail_end;
 558
 559        if (part == 'N' || part == 'E') { /* mailmap lookup */
 560                snprintf(person_name, sizeof(person_name), "%.*s",
 561                         (int)(name_end - name_start), name_start);
 562                snprintf(person_mail, sizeof(person_mail), "%.*s",
 563                         (int)(mail_end - mail_start), mail_start);
 564                mailmap_name(person_mail, sizeof(person_mail), person_name, sizeof(person_name));
 565                name_start = person_name;
 566                name_end = name_start + strlen(person_name);
 567                mail_start = person_mail;
 568                mail_end = mail_start +  strlen(person_mail);
 569        }
 570        if (part == 'n' || part == 'N') {       /* name */
 571                strbuf_add(sb, name_start, name_end-name_start);
 572                return placeholder_len;
 573        }
 574        if (part == 'e' || part == 'E') {       /* email */
 575                strbuf_add(sb, mail_start, mail_end-mail_start);
 576                return placeholder_len;
 577        }
 578
 579        if (!s.date_begin)
 580                goto skip;
 581
 582        date = strtoul(s.date_begin, NULL, 10);
 583
 584        if (part == 't') {      /* date, UNIX timestamp */
 585                strbuf_add(sb, s.date_begin, s.date_end - s.date_begin);
 586                return placeholder_len;
 587        }
 588
 589        /* parse tz */
 590        tz = strtoul(s.tz_begin + 1, NULL, 10);
 591        if (*s.tz_begin == '-')
 592                tz = -tz;
 593
 594        switch (part) {
 595        case 'd':       /* date */
 596                strbuf_addstr(sb, show_date(date, tz, dmode));
 597                return placeholder_len;
 598        case 'D':       /* date, RFC2822 style */
 599                strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822));
 600                return placeholder_len;
 601        case 'r':       /* date, relative */
 602                strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE));
 603                return placeholder_len;
 604        case 'i':       /* date, ISO 8601 */
 605                strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601));
 606                return placeholder_len;
 607        }
 608
 609skip:
 610        /*
 611         * reading from either a bogus commit, or a reflog entry with
 612         * %gn, %ge, etc.; 'sb' cannot be updated, but we still need
 613         * to compute a valid return value.
 614         */
 615        if (part == 'n' || part == 'e' || part == 't' || part == 'd'
 616            || part == 'D' || part == 'r' || part == 'i')
 617                return placeholder_len;
 618
 619        return 0; /* unknown placeholder */
 620}
 621
 622struct chunk {
 623        size_t off;
 624        size_t len;
 625};
 626
 627struct format_commit_context {
 628        const struct commit *commit;
 629        const struct pretty_print_context *pretty_ctx;
 630        unsigned commit_header_parsed:1;
 631        unsigned commit_message_parsed:1;
 632        unsigned commit_signature_parsed:1;
 633        struct {
 634                char *gpg_output;
 635                char good_bad;
 636                char *signer;
 637        } signature;
 638        char *message;
 639        size_t width, indent1, indent2;
 640
 641        /* These offsets are relative to the start of the commit message. */
 642        struct chunk author;
 643        struct chunk committer;
 644        struct chunk encoding;
 645        size_t message_off;
 646        size_t subject_off;
 647        size_t body_off;
 648
 649        /* The following ones are relative to the result struct strbuf. */
 650        struct chunk abbrev_commit_hash;
 651        struct chunk abbrev_tree_hash;
 652        struct chunk abbrev_parent_hashes;
 653        size_t wrap_start;
 654};
 655
 656static int add_again(struct strbuf *sb, struct chunk *chunk)
 657{
 658        if (chunk->len) {
 659                strbuf_adddup(sb, chunk->off, chunk->len);
 660                return 1;
 661        }
 662
 663        /*
 664         * We haven't seen this chunk before.  Our caller is surely
 665         * going to add it the hard way now.  Remember the most likely
 666         * start of the to-be-added chunk: the current end of the
 667         * struct strbuf.
 668         */
 669        chunk->off = sb->len;
 670        return 0;
 671}
 672
 673static void parse_commit_header(struct format_commit_context *context)
 674{
 675        const char *msg = context->message;
 676        int i;
 677
 678        for (i = 0; msg[i]; i++) {
 679                int eol;
 680                for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
 681                        ; /* do nothing */
 682
 683                if (i == eol) {
 684                        break;
 685                } else if (!prefixcmp(msg + i, "author ")) {
 686                        context->author.off = i + 7;
 687                        context->author.len = eol - i - 7;
 688                } else if (!prefixcmp(msg + i, "committer ")) {
 689                        context->committer.off = i + 10;
 690                        context->committer.len = eol - i - 10;
 691                } else if (!prefixcmp(msg + i, "encoding ")) {
 692                        context->encoding.off = i + 9;
 693                        context->encoding.len = eol - i - 9;
 694                }
 695                i = eol;
 696        }
 697        context->message_off = i;
 698        context->commit_header_parsed = 1;
 699}
 700
 701static int istitlechar(char c)
 702{
 703        return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
 704                (c >= '0' && c <= '9') || c == '.' || c == '_';
 705}
 706
 707static void format_sanitized_subject(struct strbuf *sb, const char *msg)
 708{
 709        size_t trimlen;
 710        size_t start_len = sb->len;
 711        int space = 2;
 712
 713        for (; *msg && *msg != '\n'; msg++) {
 714                if (istitlechar(*msg)) {
 715                        if (space == 1)
 716                                strbuf_addch(sb, '-');
 717                        space = 0;
 718                        strbuf_addch(sb, *msg);
 719                        if (*msg == '.')
 720                                while (*(msg+1) == '.')
 721                                        msg++;
 722                } else
 723                        space |= 1;
 724        }
 725
 726        /* trim any trailing '.' or '-' characters */
 727        trimlen = 0;
 728        while (sb->len - trimlen > start_len &&
 729                (sb->buf[sb->len - 1 - trimlen] == '.'
 730                || sb->buf[sb->len - 1 - trimlen] == '-'))
 731                trimlen++;
 732        strbuf_remove(sb, sb->len - trimlen, trimlen);
 733}
 734
 735const char *format_subject(struct strbuf *sb, const char *msg,
 736                           const char *line_separator)
 737{
 738        int first = 1;
 739
 740        for (;;) {
 741                const char *line = msg;
 742                int linelen = get_one_line(line);
 743
 744                msg += linelen;
 745                if (!linelen || is_empty_line(line, &linelen))
 746                        break;
 747
 748                if (!sb)
 749                        continue;
 750                strbuf_grow(sb, linelen + 2);
 751                if (!first)
 752                        strbuf_addstr(sb, line_separator);
 753                strbuf_add(sb, line, linelen);
 754                first = 0;
 755        }
 756        return msg;
 757}
 758
 759static void parse_commit_message(struct format_commit_context *c)
 760{
 761        const char *msg = c->message + c->message_off;
 762        const char *start = c->message;
 763
 764        msg = skip_empty_lines(msg);
 765        c->subject_off = msg - start;
 766
 767        msg = format_subject(NULL, msg, NULL);
 768        msg = skip_empty_lines(msg);
 769        c->body_off = msg - start;
 770
 771        c->commit_message_parsed = 1;
 772}
 773
 774static void format_decoration(struct strbuf *sb, const struct commit *commit)
 775{
 776        struct name_decoration *d;
 777        const char *prefix = " (";
 778
 779        load_ref_decorations(DECORATE_SHORT_REFS);
 780        d = lookup_decoration(&name_decoration, &commit->object);
 781        while (d) {
 782                strbuf_addstr(sb, prefix);
 783                prefix = ", ";
 784                strbuf_addstr(sb, d->name);
 785                d = d->next;
 786        }
 787        if (prefix[0] == ',')
 788                strbuf_addch(sb, ')');
 789}
 790
 791static void strbuf_wrap(struct strbuf *sb, size_t pos,
 792                        size_t width, size_t indent1, size_t indent2)
 793{
 794        struct strbuf tmp = STRBUF_INIT;
 795
 796        if (pos)
 797                strbuf_add(&tmp, sb->buf, pos);
 798        strbuf_add_wrapped_text(&tmp, sb->buf + pos,
 799                                (int) indent1, (int) indent2, (int) width);
 800        strbuf_swap(&tmp, sb);
 801        strbuf_release(&tmp);
 802}
 803
 804static void rewrap_message_tail(struct strbuf *sb,
 805                                struct format_commit_context *c,
 806                                size_t new_width, size_t new_indent1,
 807                                size_t new_indent2)
 808{
 809        if (c->width == new_width && c->indent1 == new_indent1 &&
 810            c->indent2 == new_indent2)
 811                return;
 812        if (c->wrap_start < sb->len)
 813                strbuf_wrap(sb, c->wrap_start, c->width, c->indent1, c->indent2);
 814        c->wrap_start = sb->len;
 815        c->width = new_width;
 816        c->indent1 = new_indent1;
 817        c->indent2 = new_indent2;
 818}
 819
 820static struct {
 821        char result;
 822        const char *check;
 823} signature_check[] = {
 824        { 'G', ": Good signature from " },
 825        { 'B', ": BAD signature from " },
 826};
 827
 828static void parse_signature_lines(struct format_commit_context *ctx)
 829{
 830        const char *buf = ctx->signature.gpg_output;
 831        int i;
 832
 833        for (i = 0; i < ARRAY_SIZE(signature_check); i++) {
 834                const char *found = strstr(buf, signature_check[i].check);
 835                const char *next;
 836                if (!found)
 837                        continue;
 838                ctx->signature.good_bad = signature_check[i].result;
 839                found += strlen(signature_check[i].check);
 840                next = strchrnul(found, '\n');
 841                ctx->signature.signer = xmemdupz(found, next - found);
 842                break;
 843        }
 844}
 845
 846static void parse_commit_signature(struct format_commit_context *ctx)
 847{
 848        struct strbuf payload = STRBUF_INIT;
 849        struct strbuf signature = STRBUF_INIT;
 850        struct strbuf gpg_output = STRBUF_INIT;
 851        int status;
 852
 853        ctx->commit_signature_parsed = 1;
 854
 855        if (parse_signed_commit(ctx->commit->object.sha1,
 856                                &payload, &signature) <= 0)
 857                goto out;
 858        status = verify_signed_buffer(payload.buf, payload.len,
 859                                      signature.buf, signature.len,
 860                                      &gpg_output);
 861        if (status && !gpg_output.len)
 862                goto out;
 863        ctx->signature.gpg_output = strbuf_detach(&gpg_output, NULL);
 864        parse_signature_lines(ctx);
 865
 866 out:
 867        strbuf_release(&gpg_output);
 868        strbuf_release(&payload);
 869        strbuf_release(&signature);
 870}
 871
 872
 873static int format_reflog_person(struct strbuf *sb,
 874                                char part,
 875                                struct reflog_walk_info *log,
 876                                enum date_mode dmode)
 877{
 878        const char *ident;
 879
 880        if (!log)
 881                return 2;
 882
 883        ident = get_reflog_ident(log);
 884        if (!ident)
 885                return 2;
 886
 887        return format_person_part(sb, part, ident, strlen(ident), dmode);
 888}
 889
 890static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
 891                                void *context)
 892{
 893        struct format_commit_context *c = context;
 894        const struct commit *commit = c->commit;
 895        const char *msg = c->message;
 896        struct commit_list *p;
 897        int h1, h2;
 898
 899        /* these are independent of the commit */
 900        switch (placeholder[0]) {
 901        case 'C':
 902                if (placeholder[1] == '(') {
 903                        const char *end = strchr(placeholder + 2, ')');
 904                        char color[COLOR_MAXLEN];
 905                        if (!end)
 906                                return 0;
 907                        color_parse_mem(placeholder + 2,
 908                                        end - (placeholder + 2),
 909                                        "--pretty format", color);
 910                        strbuf_addstr(sb, color);
 911                        return end - placeholder + 1;
 912                }
 913                if (!prefixcmp(placeholder + 1, "red")) {
 914                        strbuf_addstr(sb, GIT_COLOR_RED);
 915                        return 4;
 916                } else if (!prefixcmp(placeholder + 1, "green")) {
 917                        strbuf_addstr(sb, GIT_COLOR_GREEN);
 918                        return 6;
 919                } else if (!prefixcmp(placeholder + 1, "blue")) {
 920                        strbuf_addstr(sb, GIT_COLOR_BLUE);
 921                        return 5;
 922                } else if (!prefixcmp(placeholder + 1, "reset")) {
 923                        strbuf_addstr(sb, GIT_COLOR_RESET);
 924                        return 6;
 925                } else
 926                        return 0;
 927        case 'n':               /* newline */
 928                strbuf_addch(sb, '\n');
 929                return 1;
 930        case 'x':
 931                /* %x00 == NUL, %x0a == LF, etc. */
 932                if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) &&
 933                    h1 <= 16 &&
 934                    0 <= (h2 = hexval_table[0xff & placeholder[2]]) &&
 935                    h2 <= 16) {
 936                        strbuf_addch(sb, (h1<<4)|h2);
 937                        return 3;
 938                } else
 939                        return 0;
 940        case 'w':
 941                if (placeholder[1] == '(') {
 942                        unsigned long width = 0, indent1 = 0, indent2 = 0;
 943                        char *next;
 944                        const char *start = placeholder + 2;
 945                        const char *end = strchr(start, ')');
 946                        if (!end)
 947                                return 0;
 948                        if (end > start) {
 949                                width = strtoul(start, &next, 10);
 950                                if (*next == ',') {
 951                                        indent1 = strtoul(next + 1, &next, 10);
 952                                        if (*next == ',') {
 953                                                indent2 = strtoul(next + 1,
 954                                                                 &next, 10);
 955                                        }
 956                                }
 957                                if (*next != ')')
 958                                        return 0;
 959                        }
 960                        rewrap_message_tail(sb, c, width, indent1, indent2);
 961                        return end - placeholder + 1;
 962                } else
 963                        return 0;
 964        }
 965
 966        /* these depend on the commit */
 967        if (!commit->object.parsed)
 968                parse_object(commit->object.sha1);
 969
 970        switch (placeholder[0]) {
 971        case 'H':               /* commit hash */
 972                strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
 973                return 1;
 974        case 'h':               /* abbreviated commit hash */
 975                if (add_again(sb, &c->abbrev_commit_hash))
 976                        return 1;
 977                strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
 978                                                     c->pretty_ctx->abbrev));
 979                c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
 980                return 1;
 981        case 'T':               /* tree hash */
 982                strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
 983                return 1;
 984        case 't':               /* abbreviated tree hash */
 985                if (add_again(sb, &c->abbrev_tree_hash))
 986                        return 1;
 987                strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
 988                                                     c->pretty_ctx->abbrev));
 989                c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
 990                return 1;
 991        case 'P':               /* parent hashes */
 992                for (p = commit->parents; p; p = p->next) {
 993                        if (p != commit->parents)
 994                                strbuf_addch(sb, ' ');
 995                        strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
 996                }
 997                return 1;
 998        case 'p':               /* abbreviated parent hashes */
 999                if (add_again(sb, &c->abbrev_parent_hashes))
1000                        return 1;
1001                for (p = commit->parents; p; p = p->next) {
1002                        if (p != commit->parents)
1003                                strbuf_addch(sb, ' ');
1004                        strbuf_addstr(sb, find_unique_abbrev(
1005                                        p->item->object.sha1,
1006                                        c->pretty_ctx->abbrev));
1007                }
1008                c->abbrev_parent_hashes.len = sb->len -
1009                                              c->abbrev_parent_hashes.off;
1010                return 1;
1011        case 'm':               /* left/right/bottom */
1012                strbuf_addstr(sb, get_revision_mark(NULL, commit));
1013                return 1;
1014        case 'd':
1015                format_decoration(sb, commit);
1016                return 1;
1017        case 'g':               /* reflog info */
1018                switch(placeholder[1]) {
1019                case 'd':       /* reflog selector */
1020                case 'D':
1021                        if (c->pretty_ctx->reflog_info)
1022                                get_reflog_selector(sb,
1023                                                    c->pretty_ctx->reflog_info,
1024                                                    c->pretty_ctx->date_mode,
1025                                                    c->pretty_ctx->date_mode_explicit,
1026                                                    (placeholder[1] == 'd'));
1027                        return 2;
1028                case 's':       /* reflog message */
1029                        if (c->pretty_ctx->reflog_info)
1030                                get_reflog_message(sb, c->pretty_ctx->reflog_info);
1031                        return 2;
1032                case 'n':
1033                case 'N':
1034                case 'e':
1035                case 'E':
1036                        return format_reflog_person(sb,
1037                                                    placeholder[1],
1038                                                    c->pretty_ctx->reflog_info,
1039                                                    c->pretty_ctx->date_mode);
1040                }
1041                return 0;       /* unknown %g placeholder */
1042        case 'N':
1043                if (c->pretty_ctx->show_notes) {
1044                        format_display_notes(commit->object.sha1, sb,
1045                                    get_log_output_encoding(), 0);
1046                        return 1;
1047                }
1048                return 0;
1049        }
1050
1051        if (placeholder[0] == 'G') {
1052                if (!c->commit_signature_parsed)
1053                        parse_commit_signature(c);
1054                switch (placeholder[1]) {
1055                case 'G':
1056                        if (c->signature.gpg_output)
1057                                strbuf_addstr(sb, c->signature.gpg_output);
1058                        break;
1059                case '?':
1060                        switch (c->signature.good_bad) {
1061                        case 'G':
1062                        case 'B':
1063                                strbuf_addch(sb, c->signature.good_bad);
1064                        }
1065                        break;
1066                case 'S':
1067                        if (c->signature.signer)
1068                                strbuf_addstr(sb, c->signature.signer);
1069                        break;
1070                }
1071                return 2;
1072        }
1073
1074
1075        /* For the rest we have to parse the commit header. */
1076        if (!c->commit_header_parsed)
1077                parse_commit_header(c);
1078
1079        switch (placeholder[0]) {
1080        case 'a':       /* author ... */
1081                return format_person_part(sb, placeholder[1],
1082                                   msg + c->author.off, c->author.len,
1083                                   c->pretty_ctx->date_mode);
1084        case 'c':       /* committer ... */
1085                return format_person_part(sb, placeholder[1],
1086                                   msg + c->committer.off, c->committer.len,
1087                                   c->pretty_ctx->date_mode);
1088        case 'e':       /* encoding */
1089                strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
1090                return 1;
1091        case 'B':       /* raw body */
1092                /* message_off is always left at the initial newline */
1093                strbuf_addstr(sb, msg + c->message_off + 1);
1094                return 1;
1095        }
1096
1097        /* Now we need to parse the commit message. */
1098        if (!c->commit_message_parsed)
1099                parse_commit_message(c);
1100
1101        switch (placeholder[0]) {
1102        case 's':       /* subject */
1103                format_subject(sb, msg + c->subject_off, " ");
1104                return 1;
1105        case 'f':       /* sanitized subject */
1106                format_sanitized_subject(sb, msg + c->subject_off);
1107                return 1;
1108        case 'b':       /* body */
1109                strbuf_addstr(sb, msg + c->body_off);
1110                return 1;
1111        }
1112        return 0;       /* unknown placeholder */
1113}
1114
1115static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
1116                                 void *context)
1117{
1118        int consumed;
1119        size_t orig_len;
1120        enum {
1121                NO_MAGIC,
1122                ADD_LF_BEFORE_NON_EMPTY,
1123                DEL_LF_BEFORE_EMPTY,
1124                ADD_SP_BEFORE_NON_EMPTY
1125        } magic = NO_MAGIC;
1126
1127        switch (placeholder[0]) {
1128        case '-':
1129                magic = DEL_LF_BEFORE_EMPTY;
1130                break;
1131        case '+':
1132                magic = ADD_LF_BEFORE_NON_EMPTY;
1133                break;
1134        case ' ':
1135                magic = ADD_SP_BEFORE_NON_EMPTY;
1136                break;
1137        default:
1138                break;
1139        }
1140        if (magic != NO_MAGIC)
1141                placeholder++;
1142
1143        orig_len = sb->len;
1144        consumed = format_commit_one(sb, placeholder, context);
1145        if (magic == NO_MAGIC)
1146                return consumed;
1147
1148        if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) {
1149                while (sb->len && sb->buf[sb->len - 1] == '\n')
1150                        strbuf_setlen(sb, sb->len - 1);
1151        } else if (orig_len != sb->len) {
1152                if (magic == ADD_LF_BEFORE_NON_EMPTY)
1153                        strbuf_insert(sb, orig_len, "\n", 1);
1154                else if (magic == ADD_SP_BEFORE_NON_EMPTY)
1155                        strbuf_insert(sb, orig_len, " ", 1);
1156        }
1157        return consumed + 1;
1158}
1159
1160static size_t userformat_want_item(struct strbuf *sb, const char *placeholder,
1161                                   void *context)
1162{
1163        struct userformat_want *w = context;
1164
1165        if (*placeholder == '+' || *placeholder == '-' || *placeholder == ' ')
1166                placeholder++;
1167
1168        switch (*placeholder) {
1169        case 'N':
1170                w->notes = 1;
1171                break;
1172        }
1173        return 0;
1174}
1175
1176void userformat_find_requirements(const char *fmt, struct userformat_want *w)
1177{
1178        struct strbuf dummy = STRBUF_INIT;
1179
1180        if (!fmt) {
1181                if (!user_format)
1182                        return;
1183                fmt = user_format;
1184        }
1185        strbuf_expand(&dummy, fmt, userformat_want_item, w);
1186        strbuf_release(&dummy);
1187}
1188
1189void format_commit_message(const struct commit *commit,
1190                           const char *format, struct strbuf *sb,
1191                           const struct pretty_print_context *pretty_ctx)
1192{
1193        struct format_commit_context context;
1194        static const char utf8[] = "UTF-8";
1195        const char *output_enc = pretty_ctx->output_encoding;
1196
1197        memset(&context, 0, sizeof(context));
1198        context.commit = commit;
1199        context.pretty_ctx = pretty_ctx;
1200        context.wrap_start = sb->len;
1201        context.message = commit->buffer;
1202        if (output_enc) {
1203                char *enc = get_header(commit, "encoding");
1204                if (strcmp(enc ? enc : utf8, output_enc)) {
1205                        context.message = logmsg_reencode(commit, output_enc);
1206                        if (!context.message)
1207                                context.message = commit->buffer;
1208                }
1209                free(enc);
1210        }
1211
1212        strbuf_expand(sb, format, format_commit_item, &context);
1213        rewrap_message_tail(sb, &context, 0, 0, 0);
1214
1215        if (context.message != commit->buffer)
1216                free(context.message);
1217        free(context.signature.gpg_output);
1218        free(context.signature.signer);
1219}
1220
1221static void pp_header(const struct pretty_print_context *pp,
1222                      const char *encoding,
1223                      const struct commit *commit,
1224                      const char **msg_p,
1225                      struct strbuf *sb)
1226{
1227        int parents_shown = 0;
1228
1229        for (;;) {
1230                const char *line = *msg_p;
1231                int linelen = get_one_line(*msg_p);
1232
1233                if (!linelen)
1234                        return;
1235                *msg_p += linelen;
1236
1237                if (linelen == 1)
1238                        /* End of header */
1239                        return;
1240
1241                if (pp->fmt == CMIT_FMT_RAW) {
1242                        strbuf_add(sb, line, linelen);
1243                        continue;
1244                }
1245
1246                if (!memcmp(line, "parent ", 7)) {
1247                        if (linelen != 48)
1248                                die("bad parent line in commit");
1249                        continue;
1250                }
1251
1252                if (!parents_shown) {
1253                        struct commit_list *parent;
1254                        int num;
1255                        for (parent = commit->parents, num = 0;
1256                             parent;
1257                             parent = parent->next, num++)
1258                                ;
1259                        /* with enough slop */
1260                        strbuf_grow(sb, num * 50 + 20);
1261                        add_merge_info(pp, sb, commit);
1262                        parents_shown = 1;
1263                }
1264
1265                /*
1266                 * MEDIUM == DEFAULT shows only author with dates.
1267                 * FULL shows both authors but not dates.
1268                 * FULLER shows both authors and dates.
1269                 */
1270                if (!memcmp(line, "author ", 7)) {
1271                        strbuf_grow(sb, linelen + 80);
1272                        pp_user_info(pp, "Author", sb, line + 7, encoding);
1273                }
1274                if (!memcmp(line, "committer ", 10) &&
1275                    (pp->fmt == CMIT_FMT_FULL || pp->fmt == CMIT_FMT_FULLER)) {
1276                        strbuf_grow(sb, linelen + 80);
1277                        pp_user_info(pp, "Commit", sb, line + 10, encoding);
1278                }
1279        }
1280}
1281
1282void pp_title_line(const struct pretty_print_context *pp,
1283                   const char **msg_p,
1284                   struct strbuf *sb,
1285                   const char *encoding,
1286                   int need_8bit_cte)
1287{
1288        struct strbuf title;
1289
1290        strbuf_init(&title, 80);
1291        *msg_p = format_subject(&title, *msg_p,
1292                                pp->preserve_subject ? "\n" : " ");
1293
1294        strbuf_grow(sb, title.len + 1024);
1295        if (pp->subject) {
1296                strbuf_addstr(sb, pp->subject);
1297                add_rfc2047(sb, title.buf, title.len, encoding);
1298        } else {
1299                strbuf_addbuf(sb, &title);
1300        }
1301        strbuf_addch(sb, '\n');
1302
1303        if (need_8bit_cte > 0) {
1304                const char *header_fmt =
1305                        "MIME-Version: 1.0\n"
1306                        "Content-Type: text/plain; charset=%s\n"
1307                        "Content-Transfer-Encoding: 8bit\n";
1308                strbuf_addf(sb, header_fmt, encoding);
1309        }
1310        if (pp->after_subject) {
1311                strbuf_addstr(sb, pp->after_subject);
1312        }
1313        if (pp->fmt == CMIT_FMT_EMAIL) {
1314                strbuf_addch(sb, '\n');
1315        }
1316        strbuf_release(&title);
1317}
1318
1319void pp_remainder(const struct pretty_print_context *pp,
1320                  const char **msg_p,
1321                  struct strbuf *sb,
1322                  int indent)
1323{
1324        int first = 1;
1325        for (;;) {
1326                const char *line = *msg_p;
1327                int linelen = get_one_line(line);
1328                *msg_p += linelen;
1329
1330                if (!linelen)
1331                        break;
1332
1333                if (is_empty_line(line, &linelen)) {
1334                        if (first)
1335                                continue;
1336                        if (pp->fmt == CMIT_FMT_SHORT)
1337                                break;
1338                }
1339                first = 0;
1340
1341                strbuf_grow(sb, linelen + indent + 20);
1342                if (indent) {
1343                        memset(sb->buf + sb->len, ' ', indent);
1344                        strbuf_setlen(sb, sb->len + indent);
1345                }
1346                strbuf_add(sb, line, linelen);
1347                strbuf_addch(sb, '\n');
1348        }
1349}
1350
1351char *reencode_commit_message(const struct commit *commit, const char **encoding_p)
1352{
1353        const char *encoding;
1354
1355        encoding = get_log_output_encoding();
1356        if (encoding_p)
1357                *encoding_p = encoding;
1358        return logmsg_reencode(commit, encoding);
1359}
1360
1361void pretty_print_commit(const struct pretty_print_context *pp,
1362                         const struct commit *commit,
1363                         struct strbuf *sb)
1364{
1365        unsigned long beginning_of_body;
1366        int indent = 4;
1367        const char *msg = commit->buffer;
1368        char *reencoded;
1369        const char *encoding;
1370        int need_8bit_cte = pp->need_8bit_cte;
1371
1372        if (pp->fmt == CMIT_FMT_USERFORMAT) {
1373                format_commit_message(commit, user_format, sb, pp);
1374                return;
1375        }
1376
1377        reencoded = reencode_commit_message(commit, &encoding);
1378        if (reencoded) {
1379                msg = reencoded;
1380        }
1381
1382        if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
1383                indent = 0;
1384
1385        /*
1386         * We need to check and emit Content-type: to mark it
1387         * as 8-bit if we haven't done so.
1388         */
1389        if (pp->fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) {
1390                int i, ch, in_body;
1391
1392                for (in_body = i = 0; (ch = msg[i]); i++) {
1393                        if (!in_body) {
1394                                /* author could be non 7-bit ASCII but
1395                                 * the log may be so; skip over the
1396                                 * header part first.
1397                                 */
1398                                if (ch == '\n' && msg[i+1] == '\n')
1399                                        in_body = 1;
1400                        }
1401                        else if (non_ascii(ch)) {
1402                                need_8bit_cte = 1;
1403                                break;
1404                        }
1405                }
1406        }
1407
1408        pp_header(pp, encoding, commit, &msg, sb);
1409        if (pp->fmt != CMIT_FMT_ONELINE && !pp->subject) {
1410                strbuf_addch(sb, '\n');
1411        }
1412
1413        /* Skip excess blank lines at the beginning of body, if any... */
1414        msg = skip_empty_lines(msg);
1415
1416        /* These formats treat the title line specially. */
1417        if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
1418                pp_title_line(pp, &msg, sb, encoding, need_8bit_cte);
1419
1420        beginning_of_body = sb->len;
1421        if (pp->fmt != CMIT_FMT_ONELINE)
1422                pp_remainder(pp, &msg, sb, indent);
1423        strbuf_rtrim(sb);
1424
1425        /* Make sure there is an EOLN for the non-oneline case */
1426        if (pp->fmt != CMIT_FMT_ONELINE)
1427                strbuf_addch(sb, '\n');
1428
1429        /*
1430         * The caller may append additional body text in e-mail
1431         * format.  Make sure we did not strip the blank line
1432         * between the header and the body.
1433         */
1434        if (pp->fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
1435                strbuf_addch(sb, '\n');
1436
1437        if (pp->show_notes)
1438                format_display_notes(commit->object.sha1, sb, encoding,
1439                                     NOTES_SHOW_HEADER | NOTES_INDENT);
1440
1441        free(reencoded);
1442}
1443
1444void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit,
1445                    struct strbuf *sb)
1446{
1447        struct pretty_print_context pp = {0};
1448        pp.fmt = fmt;
1449        pretty_print_commit(&pp, commit, sb);
1450}