Andrew's git / gitweb.git / pretty.c
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pretty.con commit test: modernize style of t4006 (ec57a82)
   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 void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
 244{
 245        int i;
 246
 247        /* just a guess, we may have to also backslash-quote */
 248        strbuf_grow(out, len + 2);
 249
 250        strbuf_addch(out, '"');
 251        for (i = 0; i < len; i++) {
 252                switch (s[i]) {
 253                case '"':
 254                case '\\':
 255                        strbuf_addch(out, '\\');
 256                        /* fall through */
 257                default:
 258                        strbuf_addch(out, s[i]);
 259                }
 260        }
 261        strbuf_addch(out, '"');
 262}
 263
 264static int is_rfc2047_special(char ch)
 265{
 266        return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_'));
 267}
 268
 269static void add_rfc2047(struct strbuf *sb, const char *line, int len,
 270                       const char *encoding)
 271{
 272        static const int max_length = 78; /* per rfc2822 */
 273        int i;
 274        int line_len;
 275
 276        /* How many bytes are already used on the current line? */
 277        for (i = sb->len - 1; i >= 0; i--)
 278                if (sb->buf[i] == '\n')
 279                        break;
 280        line_len = sb->len - (i+1);
 281
 282        for (i = 0; i < len; i++) {
 283                int ch = line[i];
 284                if (non_ascii(ch) || ch == '\n')
 285                        goto needquote;
 286                if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
 287                        goto needquote;
 288        }
 289        strbuf_add_wrapped_bytes(sb, line, len, 0, 1, max_length - line_len);
 290        return;
 291
 292needquote:
 293        strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
 294        strbuf_addf(sb, "=?%s?q?", encoding);
 295        line_len += strlen(encoding) + 5; /* 5 for =??q? */
 296        for (i = 0; i < len; i++) {
 297                unsigned ch = line[i] & 0xFF;
 298
 299                if (line_len >= max_length - 2) {
 300                        strbuf_addf(sb, "?=\n =?%s?q?", encoding);
 301                        line_len = strlen(encoding) + 5 + 1; /* =??q? plus SP */
 302                }
 303
 304                /*
 305                 * We encode ' ' using '=20' even though rfc2047
 306                 * allows using '_' for readability.  Unfortunately,
 307                 * many programs do not understand this and just
 308                 * leave the underscore in place.
 309                 */
 310                if (is_rfc2047_special(ch) || ch == ' ' || ch == '\n') {
 311                        strbuf_addf(sb, "=%02X", ch);
 312                        line_len += 3;
 313                }
 314                else {
 315                        strbuf_addch(sb, ch);
 316                        line_len++;
 317                }
 318        }
 319        strbuf_addstr(sb, "?=");
 320}
 321
 322void pp_user_info(const struct pretty_print_context *pp,
 323                  const char *what, struct strbuf *sb,
 324                  const char *line, const char *encoding)
 325{
 326        char *date;
 327        int namelen;
 328        unsigned long time;
 329        int tz;
 330
 331        if (pp->fmt == CMIT_FMT_ONELINE)
 332                return;
 333        date = strchr(line, '>');
 334        if (!date)
 335                return;
 336        namelen = ++date - line;
 337        time = strtoul(date, &date, 10);
 338        tz = strtol(date, NULL, 10);
 339
 340        if (pp->fmt == CMIT_FMT_EMAIL) {
 341                char *name_tail = strchr(line, '<');
 342                int display_name_length;
 343                int final_line;
 344                if (!name_tail)
 345                        return;
 346                while (line < name_tail && isspace(name_tail[-1]))
 347                        name_tail--;
 348                display_name_length = name_tail - line;
 349                strbuf_addstr(sb, "From: ");
 350                if (!has_rfc822_specials(line, display_name_length)) {
 351                        add_rfc2047(sb, line, display_name_length, encoding);
 352                } else {
 353                        struct strbuf quoted = STRBUF_INIT;
 354                        add_rfc822_quoted(&quoted, line, display_name_length);
 355                        add_rfc2047(sb, quoted.buf, quoted.len, encoding);
 356                        strbuf_release(&quoted);
 357                }
 358                for (final_line = 0; final_line < sb->len; final_line++)
 359                        if (sb->buf[sb->len - final_line - 1] == '\n')
 360                                break;
 361                if (namelen - display_name_length + final_line > 78) {
 362                        strbuf_addch(sb, '\n');
 363                        if (!isspace(name_tail[0]))
 364                                strbuf_addch(sb, ' ');
 365                }
 366                strbuf_add(sb, name_tail, namelen - display_name_length);
 367                strbuf_addch(sb, '\n');
 368        } else {
 369                strbuf_addf(sb, "%s: %.*s%.*s\n", what,
 370                              (pp->fmt == CMIT_FMT_FULLER) ? 4 : 0,
 371                              "    ", namelen, line);
 372        }
 373        switch (pp->fmt) {
 374        case CMIT_FMT_MEDIUM:
 375                strbuf_addf(sb, "Date:   %s\n", show_date(time, tz, pp->date_mode));
 376                break;
 377        case CMIT_FMT_EMAIL:
 378                strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822));
 379                break;
 380        case CMIT_FMT_FULLER:
 381                strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, pp->date_mode));
 382                break;
 383        default:
 384                /* notin' */
 385                break;
 386        }
 387}
 388
 389static int is_empty_line(const char *line, int *len_p)
 390{
 391        int len = *len_p;
 392        while (len && isspace(line[len-1]))
 393                len--;
 394        *len_p = len;
 395        return !len;
 396}
 397
 398static const char *skip_empty_lines(const char *msg)
 399{
 400        for (;;) {
 401                int linelen = get_one_line(msg);
 402                int ll = linelen;
 403                if (!linelen)
 404                        break;
 405                if (!is_empty_line(msg, &ll))
 406                        break;
 407                msg += linelen;
 408        }
 409        return msg;
 410}
 411
 412static void add_merge_info(const struct pretty_print_context *pp,
 413                           struct strbuf *sb, const struct commit *commit)
 414{
 415        struct commit_list *parent = commit->parents;
 416
 417        if ((pp->fmt == CMIT_FMT_ONELINE) || (pp->fmt == CMIT_FMT_EMAIL) ||
 418            !parent || !parent->next)
 419                return;
 420
 421        strbuf_addstr(sb, "Merge:");
 422
 423        while (parent) {
 424                struct commit *p = parent->item;
 425                const char *hex = NULL;
 426                if (pp->abbrev)
 427                        hex = find_unique_abbrev(p->object.sha1, pp->abbrev);
 428                if (!hex)
 429                        hex = sha1_to_hex(p->object.sha1);
 430                parent = parent->next;
 431
 432                strbuf_addf(sb, " %s", hex);
 433        }
 434        strbuf_addch(sb, '\n');
 435}
 436
 437static char *get_header(const struct commit *commit, const char *key)
 438{
 439        int key_len = strlen(key);
 440        const char *line = commit->buffer;
 441
 442        for (;;) {
 443                const char *eol = strchr(line, '\n'), *next;
 444
 445                if (line == eol)
 446                        return NULL;
 447                if (!eol) {
 448                        eol = line + strlen(line);
 449                        next = NULL;
 450                } else
 451                        next = eol + 1;
 452                if (eol - line > key_len &&
 453                    !strncmp(line, key, key_len) &&
 454                    line[key_len] == ' ') {
 455                        return xmemdupz(line + key_len + 1, eol - line - key_len - 1);
 456                }
 457                line = next;
 458        }
 459}
 460
 461static char *replace_encoding_header(char *buf, const char *encoding)
 462{
 463        struct strbuf tmp = STRBUF_INIT;
 464        size_t start, len;
 465        char *cp = buf;
 466
 467        /* guess if there is an encoding header before a \n\n */
 468        while (strncmp(cp, "encoding ", strlen("encoding "))) {
 469                cp = strchr(cp, '\n');
 470                if (!cp || *++cp == '\n')
 471                        return buf;
 472        }
 473        start = cp - buf;
 474        cp = strchr(cp, '\n');
 475        if (!cp)
 476                return buf; /* should not happen but be defensive */
 477        len = cp + 1 - (buf + start);
 478
 479        strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
 480        if (is_encoding_utf8(encoding)) {
 481                /* we have re-coded to UTF-8; drop the header */
 482                strbuf_remove(&tmp, start, len);
 483        } else {
 484                /* just replaces XXXX in 'encoding XXXX\n' */
 485                strbuf_splice(&tmp, start + strlen("encoding "),
 486                                          len - strlen("encoding \n"),
 487                                          encoding, strlen(encoding));
 488        }
 489        return strbuf_detach(&tmp, NULL);
 490}
 491
 492char *logmsg_reencode(const struct commit *commit,
 493                      const char *output_encoding)
 494{
 495        static const char *utf8 = "UTF-8";
 496        const char *use_encoding;
 497        char *encoding;
 498        char *out;
 499
 500        if (!*output_encoding)
 501                return NULL;
 502        encoding = get_header(commit, "encoding");
 503        use_encoding = encoding ? encoding : utf8;
 504        if (!strcmp(use_encoding, output_encoding))
 505                if (encoding) /* we'll strip encoding header later */
 506                        out = xstrdup(commit->buffer);
 507                else
 508                        return NULL; /* nothing to do */
 509        else
 510                out = reencode_string(commit->buffer,
 511                                      output_encoding, use_encoding);
 512        if (out)
 513                out = replace_encoding_header(out, output_encoding);
 514
 515        free(encoding);
 516        return out;
 517}
 518
 519static int mailmap_name(char *email, int email_len, char *name, int name_len)
 520{
 521        static struct string_list *mail_map;
 522        if (!mail_map) {
 523                mail_map = xcalloc(1, sizeof(*mail_map));
 524                read_mailmap(mail_map, NULL);
 525        }
 526        return mail_map->nr && map_user(mail_map, email, email_len, name, name_len);
 527}
 528
 529static size_t format_person_part(struct strbuf *sb, char part,
 530                                 const char *msg, int len, enum date_mode dmode)
 531{
 532        /* currently all placeholders have same length */
 533        const int placeholder_len = 2;
 534        int tz;
 535        unsigned long date = 0;
 536        char person_name[1024];
 537        char person_mail[1024];
 538        struct ident_split s;
 539        const char *name_start, *name_end, *mail_start, *mail_end;
 540
 541        if (split_ident_line(&s, msg, len) < 0)
 542                goto skip;
 543
 544        name_start = s.name_begin;
 545        name_end = s.name_end;
 546        mail_start = s.mail_begin;
 547        mail_end = s.mail_end;
 548
 549        if (part == 'N' || part == 'E') { /* mailmap lookup */
 550                strlcpy(person_name, name_start, name_end - name_start + 1);
 551                strlcpy(person_mail, mail_start, mail_end - mail_start + 1);
 552                mailmap_name(person_mail, sizeof(person_mail), person_name, sizeof(person_name));
 553                name_start = person_name;
 554                name_end = name_start + strlen(person_name);
 555                mail_start = person_mail;
 556                mail_end = mail_start +  strlen(person_mail);
 557        }
 558        if (part == 'n' || part == 'N') {       /* name */
 559                strbuf_add(sb, name_start, name_end-name_start);
 560                return placeholder_len;
 561        }
 562        if (part == 'e' || part == 'E') {       /* email */
 563                strbuf_add(sb, mail_start, mail_end-mail_start);
 564                return placeholder_len;
 565        }
 566
 567        if (!s.date_begin)
 568                goto skip;
 569
 570        date = strtoul(s.date_begin, NULL, 10);
 571
 572        if (part == 't') {      /* date, UNIX timestamp */
 573                strbuf_add(sb, s.date_begin, s.date_end - s.date_begin);
 574                return placeholder_len;
 575        }
 576
 577        /* parse tz */
 578        tz = strtoul(s.tz_begin + 1, NULL, 10);
 579        if (*s.tz_begin == '-')
 580                tz = -tz;
 581
 582        switch (part) {
 583        case 'd':       /* date */
 584                strbuf_addstr(sb, show_date(date, tz, dmode));
 585                return placeholder_len;
 586        case 'D':       /* date, RFC2822 style */
 587                strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822));
 588                return placeholder_len;
 589        case 'r':       /* date, relative */
 590                strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE));
 591                return placeholder_len;
 592        case 'i':       /* date, ISO 8601 */
 593                strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601));
 594                return placeholder_len;
 595        }
 596
 597skip:
 598        /*
 599         * reading from either a bogus commit, or a reflog entry with
 600         * %gn, %ge, etc.; 'sb' cannot be updated, but we still need
 601         * to compute a valid return value.
 602         */
 603        if (part == 'n' || part == 'e' || part == 't' || part == 'd'
 604            || part == 'D' || part == 'r' || part == 'i')
 605                return placeholder_len;
 606
 607        return 0; /* unknown placeholder */
 608}
 609
 610struct chunk {
 611        size_t off;
 612        size_t len;
 613};
 614
 615struct format_commit_context {
 616        const struct commit *commit;
 617        const struct pretty_print_context *pretty_ctx;
 618        unsigned commit_header_parsed:1;
 619        unsigned commit_message_parsed:1;
 620        unsigned commit_signature_parsed:1;
 621        struct {
 622                char *gpg_output;
 623                char good_bad;
 624                char *signer;
 625        } signature;
 626        char *message;
 627        size_t width, indent1, indent2;
 628
 629        /* These offsets are relative to the start of the commit message. */
 630        struct chunk author;
 631        struct chunk committer;
 632        struct chunk encoding;
 633        size_t message_off;
 634        size_t subject_off;
 635        size_t body_off;
 636
 637        /* The following ones are relative to the result struct strbuf. */
 638        struct chunk abbrev_commit_hash;
 639        struct chunk abbrev_tree_hash;
 640        struct chunk abbrev_parent_hashes;
 641        size_t wrap_start;
 642};
 643
 644static int add_again(struct strbuf *sb, struct chunk *chunk)
 645{
 646        if (chunk->len) {
 647                strbuf_adddup(sb, chunk->off, chunk->len);
 648                return 1;
 649        }
 650
 651        /*
 652         * We haven't seen this chunk before.  Our caller is surely
 653         * going to add it the hard way now.  Remember the most likely
 654         * start of the to-be-added chunk: the current end of the
 655         * struct strbuf.
 656         */
 657        chunk->off = sb->len;
 658        return 0;
 659}
 660
 661static void parse_commit_header(struct format_commit_context *context)
 662{
 663        const char *msg = context->message;
 664        int i;
 665
 666        for (i = 0; msg[i]; i++) {
 667                int eol;
 668                for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
 669                        ; /* do nothing */
 670
 671                if (i == eol) {
 672                        break;
 673                } else if (!prefixcmp(msg + i, "author ")) {
 674                        context->author.off = i + 7;
 675                        context->author.len = eol - i - 7;
 676                } else if (!prefixcmp(msg + i, "committer ")) {
 677                        context->committer.off = i + 10;
 678                        context->committer.len = eol - i - 10;
 679                } else if (!prefixcmp(msg + i, "encoding ")) {
 680                        context->encoding.off = i + 9;
 681                        context->encoding.len = eol - i - 9;
 682                }
 683                i = eol;
 684        }
 685        context->message_off = i;
 686        context->commit_header_parsed = 1;
 687}
 688
 689static int istitlechar(char c)
 690{
 691        return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
 692                (c >= '0' && c <= '9') || c == '.' || c == '_';
 693}
 694
 695static void format_sanitized_subject(struct strbuf *sb, const char *msg)
 696{
 697        size_t trimlen;
 698        size_t start_len = sb->len;
 699        int space = 2;
 700
 701        for (; *msg && *msg != '\n'; msg++) {
 702                if (istitlechar(*msg)) {
 703                        if (space == 1)
 704                                strbuf_addch(sb, '-');
 705                        space = 0;
 706                        strbuf_addch(sb, *msg);
 707                        if (*msg == '.')
 708                                while (*(msg+1) == '.')
 709                                        msg++;
 710                } else
 711                        space |= 1;
 712        }
 713
 714        /* trim any trailing '.' or '-' characters */
 715        trimlen = 0;
 716        while (sb->len - trimlen > start_len &&
 717                (sb->buf[sb->len - 1 - trimlen] == '.'
 718                || sb->buf[sb->len - 1 - trimlen] == '-'))
 719                trimlen++;
 720        strbuf_remove(sb, sb->len - trimlen, trimlen);
 721}
 722
 723const char *format_subject(struct strbuf *sb, const char *msg,
 724                           const char *line_separator)
 725{
 726        int first = 1;
 727
 728        for (;;) {
 729                const char *line = msg;
 730                int linelen = get_one_line(line);
 731
 732                msg += linelen;
 733                if (!linelen || is_empty_line(line, &linelen))
 734                        break;
 735
 736                if (!sb)
 737                        continue;
 738                strbuf_grow(sb, linelen + 2);
 739                if (!first)
 740                        strbuf_addstr(sb, line_separator);
 741                strbuf_add(sb, line, linelen);
 742                first = 0;
 743        }
 744        return msg;
 745}
 746
 747static void parse_commit_message(struct format_commit_context *c)
 748{
 749        const char *msg = c->message + c->message_off;
 750        const char *start = c->message;
 751
 752        msg = skip_empty_lines(msg);
 753        c->subject_off = msg - start;
 754
 755        msg = format_subject(NULL, msg, NULL);
 756        msg = skip_empty_lines(msg);
 757        c->body_off = msg - start;
 758
 759        c->commit_message_parsed = 1;
 760}
 761
 762static void format_decoration(struct strbuf *sb, const struct commit *commit)
 763{
 764        struct name_decoration *d;
 765        const char *prefix = " (";
 766
 767        load_ref_decorations(DECORATE_SHORT_REFS);
 768        d = lookup_decoration(&name_decoration, &commit->object);
 769        while (d) {
 770                strbuf_addstr(sb, prefix);
 771                prefix = ", ";
 772                strbuf_addstr(sb, d->name);
 773                d = d->next;
 774        }
 775        if (prefix[0] == ',')
 776                strbuf_addch(sb, ')');
 777}
 778
 779static void strbuf_wrap(struct strbuf *sb, size_t pos,
 780                        size_t width, size_t indent1, size_t indent2)
 781{
 782        struct strbuf tmp = STRBUF_INIT;
 783
 784        if (pos)
 785                strbuf_add(&tmp, sb->buf, pos);
 786        strbuf_add_wrapped_text(&tmp, sb->buf + pos,
 787                                (int) indent1, (int) indent2, (int) width);
 788        strbuf_swap(&tmp, sb);
 789        strbuf_release(&tmp);
 790}
 791
 792static void rewrap_message_tail(struct strbuf *sb,
 793                                struct format_commit_context *c,
 794                                size_t new_width, size_t new_indent1,
 795                                size_t new_indent2)
 796{
 797        if (c->width == new_width && c->indent1 == new_indent1 &&
 798            c->indent2 == new_indent2)
 799                return;
 800        if (c->wrap_start < sb->len)
 801                strbuf_wrap(sb, c->wrap_start, c->width, c->indent1, c->indent2);
 802        c->wrap_start = sb->len;
 803        c->width = new_width;
 804        c->indent1 = new_indent1;
 805        c->indent2 = new_indent2;
 806}
 807
 808static struct {
 809        char result;
 810        const char *check;
 811} signature_check[] = {
 812        { 'G', ": Good signature from " },
 813        { 'B', ": BAD signature from " },
 814};
 815
 816static void parse_signature_lines(struct format_commit_context *ctx)
 817{
 818        const char *buf = ctx->signature.gpg_output;
 819        int i;
 820
 821        for (i = 0; i < ARRAY_SIZE(signature_check); i++) {
 822                const char *found = strstr(buf, signature_check[i].check);
 823                const char *next;
 824                if (!found)
 825                        continue;
 826                ctx->signature.good_bad = signature_check[i].result;
 827                found += strlen(signature_check[i].check);
 828                next = strchrnul(found, '\n');
 829                ctx->signature.signer = xmemdupz(found, next - found);
 830                break;
 831        }
 832}
 833
 834static void parse_commit_signature(struct format_commit_context *ctx)
 835{
 836        struct strbuf payload = STRBUF_INIT;
 837        struct strbuf signature = STRBUF_INIT;
 838        struct strbuf gpg_output = STRBUF_INIT;
 839        int status;
 840
 841        ctx->commit_signature_parsed = 1;
 842
 843        if (parse_signed_commit(ctx->commit->object.sha1,
 844                                &payload, &signature) <= 0)
 845                goto out;
 846        status = verify_signed_buffer(payload.buf, payload.len,
 847                                      signature.buf, signature.len,
 848                                      &gpg_output);
 849        if (status && !gpg_output.len)
 850                goto out;
 851        ctx->signature.gpg_output = strbuf_detach(&gpg_output, NULL);
 852        parse_signature_lines(ctx);
 853
 854 out:
 855        strbuf_release(&gpg_output);
 856        strbuf_release(&payload);
 857        strbuf_release(&signature);
 858}
 859
 860
 861static int format_reflog_person(struct strbuf *sb,
 862                                char part,
 863                                struct reflog_walk_info *log,
 864                                enum date_mode dmode)
 865{
 866        const char *ident;
 867
 868        if (!log)
 869                return 2;
 870
 871        ident = get_reflog_ident(log);
 872        if (!ident)
 873                return 2;
 874
 875        return format_person_part(sb, part, ident, strlen(ident), dmode);
 876}
 877
 878static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
 879                                void *context)
 880{
 881        struct format_commit_context *c = context;
 882        const struct commit *commit = c->commit;
 883        const char *msg = c->message;
 884        struct commit_list *p;
 885        int h1, h2;
 886
 887        /* these are independent of the commit */
 888        switch (placeholder[0]) {
 889        case 'C':
 890                if (placeholder[1] == '(') {
 891                        const char *end = strchr(placeholder + 2, ')');
 892                        char color[COLOR_MAXLEN];
 893                        if (!end)
 894                                return 0;
 895                        color_parse_mem(placeholder + 2,
 896                                        end - (placeholder + 2),
 897                                        "--pretty format", color);
 898                        strbuf_addstr(sb, color);
 899                        return end - placeholder + 1;
 900                }
 901                if (!prefixcmp(placeholder + 1, "red")) {
 902                        strbuf_addstr(sb, GIT_COLOR_RED);
 903                        return 4;
 904                } else if (!prefixcmp(placeholder + 1, "green")) {
 905                        strbuf_addstr(sb, GIT_COLOR_GREEN);
 906                        return 6;
 907                } else if (!prefixcmp(placeholder + 1, "blue")) {
 908                        strbuf_addstr(sb, GIT_COLOR_BLUE);
 909                        return 5;
 910                } else if (!prefixcmp(placeholder + 1, "reset")) {
 911                        strbuf_addstr(sb, GIT_COLOR_RESET);
 912                        return 6;
 913                } else
 914                        return 0;
 915        case 'n':               /* newline */
 916                strbuf_addch(sb, '\n');
 917                return 1;
 918        case 'x':
 919                /* %x00 == NUL, %x0a == LF, etc. */
 920                if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) &&
 921                    h1 <= 16 &&
 922                    0 <= (h2 = hexval_table[0xff & placeholder[2]]) &&
 923                    h2 <= 16) {
 924                        strbuf_addch(sb, (h1<<4)|h2);
 925                        return 3;
 926                } else
 927                        return 0;
 928        case 'w':
 929                if (placeholder[1] == '(') {
 930                        unsigned long width = 0, indent1 = 0, indent2 = 0;
 931                        char *next;
 932                        const char *start = placeholder + 2;
 933                        const char *end = strchr(start, ')');
 934                        if (!end)
 935                                return 0;
 936                        if (end > start) {
 937                                width = strtoul(start, &next, 10);
 938                                if (*next == ',') {
 939                                        indent1 = strtoul(next + 1, &next, 10);
 940                                        if (*next == ',') {
 941                                                indent2 = strtoul(next + 1,
 942                                                                 &next, 10);
 943                                        }
 944                                }
 945                                if (*next != ')')
 946                                        return 0;
 947                        }
 948                        rewrap_message_tail(sb, c, width, indent1, indent2);
 949                        return end - placeholder + 1;
 950                } else
 951                        return 0;
 952        }
 953
 954        /* these depend on the commit */
 955        if (!commit->object.parsed)
 956                parse_object(commit->object.sha1);
 957
 958        switch (placeholder[0]) {
 959        case 'H':               /* commit hash */
 960                strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
 961                return 1;
 962        case 'h':               /* abbreviated commit hash */
 963                if (add_again(sb, &c->abbrev_commit_hash))
 964                        return 1;
 965                strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
 966                                                     c->pretty_ctx->abbrev));
 967                c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
 968                return 1;
 969        case 'T':               /* tree hash */
 970                strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
 971                return 1;
 972        case 't':               /* abbreviated tree hash */
 973                if (add_again(sb, &c->abbrev_tree_hash))
 974                        return 1;
 975                strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
 976                                                     c->pretty_ctx->abbrev));
 977                c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
 978                return 1;
 979        case 'P':               /* parent hashes */
 980                for (p = commit->parents; p; p = p->next) {
 981                        if (p != commit->parents)
 982                                strbuf_addch(sb, ' ');
 983                        strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
 984                }
 985                return 1;
 986        case 'p':               /* abbreviated parent hashes */
 987                if (add_again(sb, &c->abbrev_parent_hashes))
 988                        return 1;
 989                for (p = commit->parents; p; p = p->next) {
 990                        if (p != commit->parents)
 991                                strbuf_addch(sb, ' ');
 992                        strbuf_addstr(sb, find_unique_abbrev(
 993                                        p->item->object.sha1,
 994                                        c->pretty_ctx->abbrev));
 995                }
 996                c->abbrev_parent_hashes.len = sb->len -
 997                                              c->abbrev_parent_hashes.off;
 998                return 1;
 999        case 'm':               /* left/right/bottom */
1000                strbuf_addstr(sb, get_revision_mark(NULL, commit));
1001                return 1;
1002        case 'd':
1003                format_decoration(sb, commit);
1004                return 1;
1005        case 'g':               /* reflog info */
1006                switch(placeholder[1]) {
1007                case 'd':       /* reflog selector */
1008                case 'D':
1009                        if (c->pretty_ctx->reflog_info)
1010                                get_reflog_selector(sb,
1011                                                    c->pretty_ctx->reflog_info,
1012                                                    c->pretty_ctx->date_mode,
1013                                                    (placeholder[1] == 'd'));
1014                        return 2;
1015                case 's':       /* reflog message */
1016                        if (c->pretty_ctx->reflog_info)
1017                                get_reflog_message(sb, c->pretty_ctx->reflog_info);
1018                        return 2;
1019                case 'n':
1020                case 'N':
1021                case 'e':
1022                case 'E':
1023                        return format_reflog_person(sb,
1024                                                    placeholder[1],
1025                                                    c->pretty_ctx->reflog_info,
1026                                                    c->pretty_ctx->date_mode);
1027                }
1028                return 0;       /* unknown %g placeholder */
1029        case 'N':
1030                if (c->pretty_ctx->show_notes) {
1031                        format_display_notes(commit->object.sha1, sb,
1032                                    get_log_output_encoding(), 0);
1033                        return 1;
1034                }
1035                return 0;
1036        }
1037
1038        if (placeholder[0] == 'G') {
1039                if (!c->commit_signature_parsed)
1040                        parse_commit_signature(c);
1041                switch (placeholder[1]) {
1042                case 'G':
1043                        if (c->signature.gpg_output)
1044                                strbuf_addstr(sb, c->signature.gpg_output);
1045                        break;
1046                case '?':
1047                        switch (c->signature.good_bad) {
1048                        case 'G':
1049                        case 'B':
1050                                strbuf_addch(sb, c->signature.good_bad);
1051                        }
1052                        break;
1053                case 'S':
1054                        if (c->signature.signer)
1055                                strbuf_addstr(sb, c->signature.signer);
1056                        break;
1057                }
1058                return 2;
1059        }
1060
1061
1062        /* For the rest we have to parse the commit header. */
1063        if (!c->commit_header_parsed)
1064                parse_commit_header(c);
1065
1066        switch (placeholder[0]) {
1067        case 'a':       /* author ... */
1068                return format_person_part(sb, placeholder[1],
1069                                   msg + c->author.off, c->author.len,
1070                                   c->pretty_ctx->date_mode);
1071        case 'c':       /* committer ... */
1072                return format_person_part(sb, placeholder[1],
1073                                   msg + c->committer.off, c->committer.len,
1074                                   c->pretty_ctx->date_mode);
1075        case 'e':       /* encoding */
1076                strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
1077                return 1;
1078        case 'B':       /* raw body */
1079                /* message_off is always left at the initial newline */
1080                strbuf_addstr(sb, msg + c->message_off + 1);
1081                return 1;
1082        }
1083
1084        /* Now we need to parse the commit message. */
1085        if (!c->commit_message_parsed)
1086                parse_commit_message(c);
1087
1088        switch (placeholder[0]) {
1089        case 's':       /* subject */
1090                format_subject(sb, msg + c->subject_off, " ");
1091                return 1;
1092        case 'f':       /* sanitized subject */
1093                format_sanitized_subject(sb, msg + c->subject_off);
1094                return 1;
1095        case 'b':       /* body */
1096                strbuf_addstr(sb, msg + c->body_off);
1097                return 1;
1098        }
1099        return 0;       /* unknown placeholder */
1100}
1101
1102static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
1103                                 void *context)
1104{
1105        int consumed;
1106        size_t orig_len;
1107        enum {
1108                NO_MAGIC,
1109                ADD_LF_BEFORE_NON_EMPTY,
1110                DEL_LF_BEFORE_EMPTY,
1111                ADD_SP_BEFORE_NON_EMPTY
1112        } magic = NO_MAGIC;
1113
1114        switch (placeholder[0]) {
1115        case '-':
1116                magic = DEL_LF_BEFORE_EMPTY;
1117                break;
1118        case '+':
1119                magic = ADD_LF_BEFORE_NON_EMPTY;
1120                break;
1121        case ' ':
1122                magic = ADD_SP_BEFORE_NON_EMPTY;
1123                break;
1124        default:
1125                break;
1126        }
1127        if (magic != NO_MAGIC)
1128                placeholder++;
1129
1130        orig_len = sb->len;
1131        consumed = format_commit_one(sb, placeholder, context);
1132        if (magic == NO_MAGIC)
1133                return consumed;
1134
1135        if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) {
1136                while (sb->len && sb->buf[sb->len - 1] == '\n')
1137                        strbuf_setlen(sb, sb->len - 1);
1138        } else if (orig_len != sb->len) {
1139                if (magic == ADD_LF_BEFORE_NON_EMPTY)
1140                        strbuf_insert(sb, orig_len, "\n", 1);
1141                else if (magic == ADD_SP_BEFORE_NON_EMPTY)
1142                        strbuf_insert(sb, orig_len, " ", 1);
1143        }
1144        return consumed + 1;
1145}
1146
1147static size_t userformat_want_item(struct strbuf *sb, const char *placeholder,
1148                                   void *context)
1149{
1150        struct userformat_want *w = context;
1151
1152        if (*placeholder == '+' || *placeholder == '-' || *placeholder == ' ')
1153                placeholder++;
1154
1155        switch (*placeholder) {
1156        case 'N':
1157                w->notes = 1;
1158                break;
1159        }
1160        return 0;
1161}
1162
1163void userformat_find_requirements(const char *fmt, struct userformat_want *w)
1164{
1165        struct strbuf dummy = STRBUF_INIT;
1166
1167        if (!fmt) {
1168                if (!user_format)
1169                        return;
1170                fmt = user_format;
1171        }
1172        strbuf_expand(&dummy, fmt, userformat_want_item, w);
1173        strbuf_release(&dummy);
1174}
1175
1176void format_commit_message(const struct commit *commit,
1177                           const char *format, struct strbuf *sb,
1178                           const struct pretty_print_context *pretty_ctx)
1179{
1180        struct format_commit_context context;
1181        static const char utf8[] = "UTF-8";
1182        const char *output_enc = pretty_ctx->output_encoding;
1183
1184        memset(&context, 0, sizeof(context));
1185        context.commit = commit;
1186        context.pretty_ctx = pretty_ctx;
1187        context.wrap_start = sb->len;
1188        context.message = commit->buffer;
1189        if (output_enc) {
1190                char *enc = get_header(commit, "encoding");
1191                if (strcmp(enc ? enc : utf8, output_enc)) {
1192                        context.message = logmsg_reencode(commit, output_enc);
1193                        if (!context.message)
1194                                context.message = commit->buffer;
1195                }
1196                free(enc);
1197        }
1198
1199        strbuf_expand(sb, format, format_commit_item, &context);
1200        rewrap_message_tail(sb, &context, 0, 0, 0);
1201
1202        if (context.message != commit->buffer)
1203                free(context.message);
1204        free(context.signature.gpg_output);
1205        free(context.signature.signer);
1206}
1207
1208static void pp_header(const struct pretty_print_context *pp,
1209                      const char *encoding,
1210                      const struct commit *commit,
1211                      const char **msg_p,
1212                      struct strbuf *sb)
1213{
1214        int parents_shown = 0;
1215
1216        for (;;) {
1217                const char *line = *msg_p;
1218                int linelen = get_one_line(*msg_p);
1219
1220                if (!linelen)
1221                        return;
1222                *msg_p += linelen;
1223
1224                if (linelen == 1)
1225                        /* End of header */
1226                        return;
1227
1228                if (pp->fmt == CMIT_FMT_RAW) {
1229                        strbuf_add(sb, line, linelen);
1230                        continue;
1231                }
1232
1233                if (!memcmp(line, "parent ", 7)) {
1234                        if (linelen != 48)
1235                                die("bad parent line in commit");
1236                        continue;
1237                }
1238
1239                if (!parents_shown) {
1240                        struct commit_list *parent;
1241                        int num;
1242                        for (parent = commit->parents, num = 0;
1243                             parent;
1244                             parent = parent->next, num++)
1245                                ;
1246                        /* with enough slop */
1247                        strbuf_grow(sb, num * 50 + 20);
1248                        add_merge_info(pp, sb, commit);
1249                        parents_shown = 1;
1250                }
1251
1252                /*
1253                 * MEDIUM == DEFAULT shows only author with dates.
1254                 * FULL shows both authors but not dates.
1255                 * FULLER shows both authors and dates.
1256                 */
1257                if (!memcmp(line, "author ", 7)) {
1258                        strbuf_grow(sb, linelen + 80);
1259                        pp_user_info(pp, "Author", sb, line + 7, encoding);
1260                }
1261                if (!memcmp(line, "committer ", 10) &&
1262                    (pp->fmt == CMIT_FMT_FULL || pp->fmt == CMIT_FMT_FULLER)) {
1263                        strbuf_grow(sb, linelen + 80);
1264                        pp_user_info(pp, "Commit", sb, line + 10, encoding);
1265                }
1266        }
1267}
1268
1269void pp_title_line(const struct pretty_print_context *pp,
1270                   const char **msg_p,
1271                   struct strbuf *sb,
1272                   const char *encoding,
1273                   int need_8bit_cte)
1274{
1275        struct strbuf title;
1276
1277        strbuf_init(&title, 80);
1278        *msg_p = format_subject(&title, *msg_p,
1279                                pp->preserve_subject ? "\n" : " ");
1280
1281        strbuf_grow(sb, title.len + 1024);
1282        if (pp->subject) {
1283                strbuf_addstr(sb, pp->subject);
1284                add_rfc2047(sb, title.buf, title.len, encoding);
1285        } else {
1286                strbuf_addbuf(sb, &title);
1287        }
1288        strbuf_addch(sb, '\n');
1289
1290        if (need_8bit_cte > 0) {
1291                const char *header_fmt =
1292                        "MIME-Version: 1.0\n"
1293                        "Content-Type: text/plain; charset=%s\n"
1294                        "Content-Transfer-Encoding: 8bit\n";
1295                strbuf_addf(sb, header_fmt, encoding);
1296        }
1297        if (pp->after_subject) {
1298                strbuf_addstr(sb, pp->after_subject);
1299        }
1300        if (pp->fmt == CMIT_FMT_EMAIL) {
1301                strbuf_addch(sb, '\n');
1302        }
1303        strbuf_release(&title);
1304}
1305
1306void pp_remainder(const struct pretty_print_context *pp,
1307                  const char **msg_p,
1308                  struct strbuf *sb,
1309                  int indent)
1310{
1311        int first = 1;
1312        for (;;) {
1313                const char *line = *msg_p;
1314                int linelen = get_one_line(line);
1315                *msg_p += linelen;
1316
1317                if (!linelen)
1318                        break;
1319
1320                if (is_empty_line(line, &linelen)) {
1321                        if (first)
1322                                continue;
1323                        if (pp->fmt == CMIT_FMT_SHORT)
1324                                break;
1325                }
1326                first = 0;
1327
1328                strbuf_grow(sb, linelen + indent + 20);
1329                if (indent) {
1330                        memset(sb->buf + sb->len, ' ', indent);
1331                        strbuf_setlen(sb, sb->len + indent);
1332                }
1333                strbuf_add(sb, line, linelen);
1334                strbuf_addch(sb, '\n');
1335        }
1336}
1337
1338char *reencode_commit_message(const struct commit *commit, const char **encoding_p)
1339{
1340        const char *encoding;
1341
1342        encoding = get_log_output_encoding();
1343        if (encoding_p)
1344                *encoding_p = encoding;
1345        return logmsg_reencode(commit, encoding);
1346}
1347
1348void pretty_print_commit(const struct pretty_print_context *pp,
1349                         const struct commit *commit,
1350                         struct strbuf *sb)
1351{
1352        unsigned long beginning_of_body;
1353        int indent = 4;
1354        const char *msg = commit->buffer;
1355        char *reencoded;
1356        const char *encoding;
1357        int need_8bit_cte = pp->need_8bit_cte;
1358
1359        if (pp->fmt == CMIT_FMT_USERFORMAT) {
1360                format_commit_message(commit, user_format, sb, pp);
1361                return;
1362        }
1363
1364        reencoded = reencode_commit_message(commit, &encoding);
1365        if (reencoded) {
1366                msg = reencoded;
1367        }
1368
1369        if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
1370                indent = 0;
1371
1372        /*
1373         * We need to check and emit Content-type: to mark it
1374         * as 8-bit if we haven't done so.
1375         */
1376        if (pp->fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) {
1377                int i, ch, in_body;
1378
1379                for (in_body = i = 0; (ch = msg[i]); i++) {
1380                        if (!in_body) {
1381                                /* author could be non 7-bit ASCII but
1382                                 * the log may be so; skip over the
1383                                 * header part first.
1384                                 */
1385                                if (ch == '\n' && msg[i+1] == '\n')
1386                                        in_body = 1;
1387                        }
1388                        else if (non_ascii(ch)) {
1389                                need_8bit_cte = 1;
1390                                break;
1391                        }
1392                }
1393        }
1394
1395        pp_header(pp, encoding, commit, &msg, sb);
1396        if (pp->fmt != CMIT_FMT_ONELINE && !pp->subject) {
1397                strbuf_addch(sb, '\n');
1398        }
1399
1400        /* Skip excess blank lines at the beginning of body, if any... */
1401        msg = skip_empty_lines(msg);
1402
1403        /* These formats treat the title line specially. */
1404        if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
1405                pp_title_line(pp, &msg, sb, encoding, need_8bit_cte);
1406
1407        beginning_of_body = sb->len;
1408        if (pp->fmt != CMIT_FMT_ONELINE)
1409                pp_remainder(pp, &msg, sb, indent);
1410        strbuf_rtrim(sb);
1411
1412        /* Make sure there is an EOLN for the non-oneline case */
1413        if (pp->fmt != CMIT_FMT_ONELINE)
1414                strbuf_addch(sb, '\n');
1415
1416        /*
1417         * The caller may append additional body text in e-mail
1418         * format.  Make sure we did not strip the blank line
1419         * between the header and the body.
1420         */
1421        if (pp->fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
1422                strbuf_addch(sb, '\n');
1423
1424        if (pp->show_notes)
1425                format_display_notes(commit->object.sha1, sb, encoding,
1426                                     NOTES_SHOW_HEADER | NOTES_INDENT);
1427
1428        free(reencoded);
1429}
1430
1431void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit,
1432                    struct strbuf *sb)
1433{
1434        struct pretty_print_context pp = {0};
1435        pp.fmt = fmt;
1436        pretty_print_commit(&pp, commit, sb);
1437}