Andrew's git / gitweb.git / pretty.c
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pretty.con commit sha1_name.c: clarify what "fake" is for in find_short_object_filename() (274ac00)
   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 start, end, tz = 0;
 535        unsigned long date = 0;
 536        char *ep;
 537        const char *name_start, *name_end, *mail_start, *mail_end, *msg_end = msg+len;
 538        char person_name[1024];
 539        char person_mail[1024];
 540
 541        /* advance 'end' to point to email start delimiter */
 542        for (end = 0; end < len && msg[end] != '<'; end++)
 543                ; /* do nothing */
 544
 545        /*
 546         * When end points at the '<' that we found, it should have
 547         * matching '>' later, which means 'end' must be strictly
 548         * below len - 1.
 549         */
 550        if (end >= len - 2)
 551                goto skip;
 552
 553        /* Seek for both name and email part */
 554        name_start = msg;
 555        name_end = msg+end;
 556        while (name_end > name_start && isspace(*(name_end-1)))
 557                name_end--;
 558        mail_start = msg+end+1;
 559        mail_end = mail_start;
 560        while (mail_end < msg_end && *mail_end != '>')
 561                mail_end++;
 562        if (mail_end == msg_end)
 563                goto skip;
 564        end = mail_end-msg;
 565
 566        if (part == 'N' || part == 'E') { /* mailmap lookup */
 567                strlcpy(person_name, name_start, name_end-name_start+1);
 568                strlcpy(person_mail, mail_start, mail_end-mail_start+1);
 569                mailmap_name(person_mail, sizeof(person_mail), person_name, sizeof(person_name));
 570                name_start = person_name;
 571                name_end = name_start + strlen(person_name);
 572                mail_start = person_mail;
 573                mail_end = mail_start +  strlen(person_mail);
 574        }
 575        if (part == 'n' || part == 'N') {       /* name */
 576                strbuf_add(sb, name_start, name_end-name_start);
 577                return placeholder_len;
 578        }
 579        if (part == 'e' || part == 'E') {       /* email */
 580                strbuf_add(sb, mail_start, mail_end-mail_start);
 581                return placeholder_len;
 582        }
 583
 584        /* advance 'start' to point to date start delimiter */
 585        for (start = end + 1; start < len && isspace(msg[start]); start++)
 586                ; /* do nothing */
 587        if (start >= len)
 588                goto skip;
 589        date = strtoul(msg + start, &ep, 10);
 590        if (msg + start == ep)
 591                goto skip;
 592
 593        if (part == 't') {      /* date, UNIX timestamp */
 594                strbuf_add(sb, msg + start, ep - (msg + start));
 595                return placeholder_len;
 596        }
 597
 598        /* parse tz */
 599        for (start = ep - msg + 1; start < len && isspace(msg[start]); start++)
 600                ; /* do nothing */
 601        if (start + 1 < len) {
 602                tz = strtoul(msg + start + 1, NULL, 10);
 603                if (msg[start] == '-')
 604                        tz = -tz;
 605        }
 606
 607        switch (part) {
 608        case 'd':       /* date */
 609                strbuf_addstr(sb, show_date(date, tz, dmode));
 610                return placeholder_len;
 611        case 'D':       /* date, RFC2822 style */
 612                strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822));
 613                return placeholder_len;
 614        case 'r':       /* date, relative */
 615                strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE));
 616                return placeholder_len;
 617        case 'i':       /* date, ISO 8601 */
 618                strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601));
 619                return placeholder_len;
 620        }
 621
 622skip:
 623        /*
 624         * bogus commit, 'sb' cannot be updated, but we still need to
 625         * compute a valid return value.
 626         */
 627        if (part == 'n' || part == 'e' || part == 't' || part == 'd'
 628            || part == 'D' || part == 'r' || part == 'i')
 629                return placeholder_len;
 630
 631        return 0; /* unknown placeholder */
 632}
 633
 634struct chunk {
 635        size_t off;
 636        size_t len;
 637};
 638
 639struct format_commit_context {
 640        const struct commit *commit;
 641        const struct pretty_print_context *pretty_ctx;
 642        unsigned commit_header_parsed:1;
 643        unsigned commit_message_parsed:1;
 644        unsigned commit_signature_parsed:1;
 645        struct {
 646                char *gpg_output;
 647                char good_bad;
 648                char *signer;
 649        } signature;
 650        char *message;
 651        size_t width, indent1, indent2;
 652
 653        /* These offsets are relative to the start of the commit message. */
 654        struct chunk author;
 655        struct chunk committer;
 656        struct chunk encoding;
 657        size_t message_off;
 658        size_t subject_off;
 659        size_t body_off;
 660
 661        /* The following ones are relative to the result struct strbuf. */
 662        struct chunk abbrev_commit_hash;
 663        struct chunk abbrev_tree_hash;
 664        struct chunk abbrev_parent_hashes;
 665        size_t wrap_start;
 666};
 667
 668static int add_again(struct strbuf *sb, struct chunk *chunk)
 669{
 670        if (chunk->len) {
 671                strbuf_adddup(sb, chunk->off, chunk->len);
 672                return 1;
 673        }
 674
 675        /*
 676         * We haven't seen this chunk before.  Our caller is surely
 677         * going to add it the hard way now.  Remember the most likely
 678         * start of the to-be-added chunk: the current end of the
 679         * struct strbuf.
 680         */
 681        chunk->off = sb->len;
 682        return 0;
 683}
 684
 685static void parse_commit_header(struct format_commit_context *context)
 686{
 687        const char *msg = context->message;
 688        int i;
 689
 690        for (i = 0; msg[i]; i++) {
 691                int eol;
 692                for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
 693                        ; /* do nothing */
 694
 695                if (i == eol) {
 696                        break;
 697                } else if (!prefixcmp(msg + i, "author ")) {
 698                        context->author.off = i + 7;
 699                        context->author.len = eol - i - 7;
 700                } else if (!prefixcmp(msg + i, "committer ")) {
 701                        context->committer.off = i + 10;
 702                        context->committer.len = eol - i - 10;
 703                } else if (!prefixcmp(msg + i, "encoding ")) {
 704                        context->encoding.off = i + 9;
 705                        context->encoding.len = eol - i - 9;
 706                }
 707                i = eol;
 708        }
 709        context->message_off = i;
 710        context->commit_header_parsed = 1;
 711}
 712
 713static int istitlechar(char c)
 714{
 715        return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
 716                (c >= '0' && c <= '9') || c == '.' || c == '_';
 717}
 718
 719static void format_sanitized_subject(struct strbuf *sb, const char *msg)
 720{
 721        size_t trimlen;
 722        size_t start_len = sb->len;
 723        int space = 2;
 724
 725        for (; *msg && *msg != '\n'; msg++) {
 726                if (istitlechar(*msg)) {
 727                        if (space == 1)
 728                                strbuf_addch(sb, '-');
 729                        space = 0;
 730                        strbuf_addch(sb, *msg);
 731                        if (*msg == '.')
 732                                while (*(msg+1) == '.')
 733                                        msg++;
 734                } else
 735                        space |= 1;
 736        }
 737
 738        /* trim any trailing '.' or '-' characters */
 739        trimlen = 0;
 740        while (sb->len - trimlen > start_len &&
 741                (sb->buf[sb->len - 1 - trimlen] == '.'
 742                || sb->buf[sb->len - 1 - trimlen] == '-'))
 743                trimlen++;
 744        strbuf_remove(sb, sb->len - trimlen, trimlen);
 745}
 746
 747const char *format_subject(struct strbuf *sb, const char *msg,
 748                           const char *line_separator)
 749{
 750        int first = 1;
 751
 752        for (;;) {
 753                const char *line = msg;
 754                int linelen = get_one_line(line);
 755
 756                msg += linelen;
 757                if (!linelen || is_empty_line(line, &linelen))
 758                        break;
 759
 760                if (!sb)
 761                        continue;
 762                strbuf_grow(sb, linelen + 2);
 763                if (!first)
 764                        strbuf_addstr(sb, line_separator);
 765                strbuf_add(sb, line, linelen);
 766                first = 0;
 767        }
 768        return msg;
 769}
 770
 771static void parse_commit_message(struct format_commit_context *c)
 772{
 773        const char *msg = c->message + c->message_off;
 774        const char *start = c->message;
 775
 776        msg = skip_empty_lines(msg);
 777        c->subject_off = msg - start;
 778
 779        msg = format_subject(NULL, msg, NULL);
 780        msg = skip_empty_lines(msg);
 781        c->body_off = msg - start;
 782
 783        c->commit_message_parsed = 1;
 784}
 785
 786static void format_decoration(struct strbuf *sb, const struct commit *commit)
 787{
 788        struct name_decoration *d;
 789        const char *prefix = " (";
 790
 791        load_ref_decorations(DECORATE_SHORT_REFS);
 792        d = lookup_decoration(&name_decoration, &commit->object);
 793        while (d) {
 794                strbuf_addstr(sb, prefix);
 795                prefix = ", ";
 796                strbuf_addstr(sb, d->name);
 797                d = d->next;
 798        }
 799        if (prefix[0] == ',')
 800                strbuf_addch(sb, ')');
 801}
 802
 803static void strbuf_wrap(struct strbuf *sb, size_t pos,
 804                        size_t width, size_t indent1, size_t indent2)
 805{
 806        struct strbuf tmp = STRBUF_INIT;
 807
 808        if (pos)
 809                strbuf_add(&tmp, sb->buf, pos);
 810        strbuf_add_wrapped_text(&tmp, sb->buf + pos,
 811                                (int) indent1, (int) indent2, (int) width);
 812        strbuf_swap(&tmp, sb);
 813        strbuf_release(&tmp);
 814}
 815
 816static void rewrap_message_tail(struct strbuf *sb,
 817                                struct format_commit_context *c,
 818                                size_t new_width, size_t new_indent1,
 819                                size_t new_indent2)
 820{
 821        if (c->width == new_width && c->indent1 == new_indent1 &&
 822            c->indent2 == new_indent2)
 823                return;
 824        if (c->wrap_start < sb->len)
 825                strbuf_wrap(sb, c->wrap_start, c->width, c->indent1, c->indent2);
 826        c->wrap_start = sb->len;
 827        c->width = new_width;
 828        c->indent1 = new_indent1;
 829        c->indent2 = new_indent2;
 830}
 831
 832static struct {
 833        char result;
 834        const char *check;
 835} signature_check[] = {
 836        { 'G', ": Good signature from " },
 837        { 'B', ": BAD signature from " },
 838};
 839
 840static void parse_signature_lines(struct format_commit_context *ctx)
 841{
 842        const char *buf = ctx->signature.gpg_output;
 843        int i;
 844
 845        for (i = 0; i < ARRAY_SIZE(signature_check); i++) {
 846                const char *found = strstr(buf, signature_check[i].check);
 847                const char *next;
 848                if (!found)
 849                        continue;
 850                ctx->signature.good_bad = signature_check[i].result;
 851                found += strlen(signature_check[i].check);
 852                next = strchrnul(found, '\n');
 853                ctx->signature.signer = xmemdupz(found, next - found);
 854                break;
 855        }
 856}
 857
 858static void parse_commit_signature(struct format_commit_context *ctx)
 859{
 860        struct strbuf payload = STRBUF_INIT;
 861        struct strbuf signature = STRBUF_INIT;
 862        struct strbuf gpg_output = STRBUF_INIT;
 863        int status;
 864
 865        ctx->commit_signature_parsed = 1;
 866
 867        if (parse_signed_commit(ctx->commit->object.sha1,
 868                                &payload, &signature) <= 0)
 869                goto out;
 870        status = verify_signed_buffer(payload.buf, payload.len,
 871                                      signature.buf, signature.len,
 872                                      &gpg_output);
 873        if (status && !gpg_output.len)
 874                goto out;
 875        ctx->signature.gpg_output = strbuf_detach(&gpg_output, NULL);
 876        parse_signature_lines(ctx);
 877
 878 out:
 879        strbuf_release(&gpg_output);
 880        strbuf_release(&payload);
 881        strbuf_release(&signature);
 882}
 883
 884
 885static int format_reflog_person(struct strbuf *sb,
 886                                char part,
 887                                struct reflog_walk_info *log,
 888                                enum date_mode dmode)
 889{
 890        const char *ident;
 891
 892        if (!log)
 893                return 2;
 894
 895        ident = get_reflog_ident(log);
 896        if (!ident)
 897                return 2;
 898
 899        return format_person_part(sb, part, ident, strlen(ident), dmode);
 900}
 901
 902static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
 903                                void *context)
 904{
 905        struct format_commit_context *c = context;
 906        const struct commit *commit = c->commit;
 907        const char *msg = c->message;
 908        struct commit_list *p;
 909        int h1, h2;
 910
 911        /* these are independent of the commit */
 912        switch (placeholder[0]) {
 913        case 'C':
 914                if (placeholder[1] == '(') {
 915                        const char *end = strchr(placeholder + 2, ')');
 916                        char color[COLOR_MAXLEN];
 917                        if (!end)
 918                                return 0;
 919                        color_parse_mem(placeholder + 2,
 920                                        end - (placeholder + 2),
 921                                        "--pretty format", color);
 922                        strbuf_addstr(sb, color);
 923                        return end - placeholder + 1;
 924                }
 925                if (!prefixcmp(placeholder + 1, "red")) {
 926                        strbuf_addstr(sb, GIT_COLOR_RED);
 927                        return 4;
 928                } else if (!prefixcmp(placeholder + 1, "green")) {
 929                        strbuf_addstr(sb, GIT_COLOR_GREEN);
 930                        return 6;
 931                } else if (!prefixcmp(placeholder + 1, "blue")) {
 932                        strbuf_addstr(sb, GIT_COLOR_BLUE);
 933                        return 5;
 934                } else if (!prefixcmp(placeholder + 1, "reset")) {
 935                        strbuf_addstr(sb, GIT_COLOR_RESET);
 936                        return 6;
 937                } else
 938                        return 0;
 939        case 'n':               /* newline */
 940                strbuf_addch(sb, '\n');
 941                return 1;
 942        case 'x':
 943                /* %x00 == NUL, %x0a == LF, etc. */
 944                if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) &&
 945                    h1 <= 16 &&
 946                    0 <= (h2 = hexval_table[0xff & placeholder[2]]) &&
 947                    h2 <= 16) {
 948                        strbuf_addch(sb, (h1<<4)|h2);
 949                        return 3;
 950                } else
 951                        return 0;
 952        case 'w':
 953                if (placeholder[1] == '(') {
 954                        unsigned long width = 0, indent1 = 0, indent2 = 0;
 955                        char *next;
 956                        const char *start = placeholder + 2;
 957                        const char *end = strchr(start, ')');
 958                        if (!end)
 959                                return 0;
 960                        if (end > start) {
 961                                width = strtoul(start, &next, 10);
 962                                if (*next == ',') {
 963                                        indent1 = strtoul(next + 1, &next, 10);
 964                                        if (*next == ',') {
 965                                                indent2 = strtoul(next + 1,
 966                                                                 &next, 10);
 967                                        }
 968                                }
 969                                if (*next != ')')
 970                                        return 0;
 971                        }
 972                        rewrap_message_tail(sb, c, width, indent1, indent2);
 973                        return end - placeholder + 1;
 974                } else
 975                        return 0;
 976        }
 977
 978        /* these depend on the commit */
 979        if (!commit->object.parsed)
 980                parse_object(commit->object.sha1);
 981
 982        switch (placeholder[0]) {
 983        case 'H':               /* commit hash */
 984                strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
 985                return 1;
 986        case 'h':               /* abbreviated commit hash */
 987                if (add_again(sb, &c->abbrev_commit_hash))
 988                        return 1;
 989                strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
 990                                                     c->pretty_ctx->abbrev));
 991                c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
 992                return 1;
 993        case 'T':               /* tree hash */
 994                strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
 995                return 1;
 996        case 't':               /* abbreviated tree hash */
 997                if (add_again(sb, &c->abbrev_tree_hash))
 998                        return 1;
 999                strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
1000                                                     c->pretty_ctx->abbrev));
1001                c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
1002                return 1;
1003        case 'P':               /* parent hashes */
1004                for (p = commit->parents; p; p = p->next) {
1005                        if (p != commit->parents)
1006                                strbuf_addch(sb, ' ');
1007                        strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
1008                }
1009                return 1;
1010        case 'p':               /* abbreviated parent hashes */
1011                if (add_again(sb, &c->abbrev_parent_hashes))
1012                        return 1;
1013                for (p = commit->parents; p; p = p->next) {
1014                        if (p != commit->parents)
1015                                strbuf_addch(sb, ' ');
1016                        strbuf_addstr(sb, find_unique_abbrev(
1017                                        p->item->object.sha1,
1018                                        c->pretty_ctx->abbrev));
1019                }
1020                c->abbrev_parent_hashes.len = sb->len -
1021                                              c->abbrev_parent_hashes.off;
1022                return 1;
1023        case 'm':               /* left/right/bottom */
1024                strbuf_addstr(sb, get_revision_mark(NULL, commit));
1025                return 1;
1026        case 'd':
1027                format_decoration(sb, commit);
1028                return 1;
1029        case 'g':               /* reflog info */
1030                switch(placeholder[1]) {
1031                case 'd':       /* reflog selector */
1032                case 'D':
1033                        if (c->pretty_ctx->reflog_info)
1034                                get_reflog_selector(sb,
1035                                                    c->pretty_ctx->reflog_info,
1036                                                    c->pretty_ctx->date_mode,
1037                                                    (placeholder[1] == 'd'));
1038                        return 2;
1039                case 's':       /* reflog message */
1040                        if (c->pretty_ctx->reflog_info)
1041                                get_reflog_message(sb, c->pretty_ctx->reflog_info);
1042                        return 2;
1043                case 'n':
1044                case 'N':
1045                case 'e':
1046                case 'E':
1047                        return format_reflog_person(sb,
1048                                                    placeholder[1],
1049                                                    c->pretty_ctx->reflog_info,
1050                                                    c->pretty_ctx->date_mode);
1051                }
1052                return 0;       /* unknown %g placeholder */
1053        case 'N':
1054                if (c->pretty_ctx->show_notes) {
1055                        format_display_notes(commit->object.sha1, sb,
1056                                    get_log_output_encoding(), 0);
1057                        return 1;
1058                }
1059                return 0;
1060        }
1061
1062        if (placeholder[0] == 'G') {
1063                if (!c->commit_signature_parsed)
1064                        parse_commit_signature(c);
1065                switch (placeholder[1]) {
1066                case 'G':
1067                        if (c->signature.gpg_output)
1068                                strbuf_addstr(sb, c->signature.gpg_output);
1069                        break;
1070                case '?':
1071                        switch (c->signature.good_bad) {
1072                        case 'G':
1073                        case 'B':
1074                                strbuf_addch(sb, c->signature.good_bad);
1075                        }
1076                        break;
1077                case 'S':
1078                        if (c->signature.signer)
1079                                strbuf_addstr(sb, c->signature.signer);
1080                        break;
1081                }
1082                return 2;
1083        }
1084
1085
1086        /* For the rest we have to parse the commit header. */
1087        if (!c->commit_header_parsed)
1088                parse_commit_header(c);
1089
1090        switch (placeholder[0]) {
1091        case 'a':       /* author ... */
1092                return format_person_part(sb, placeholder[1],
1093                                   msg + c->author.off, c->author.len,
1094                                   c->pretty_ctx->date_mode);
1095        case 'c':       /* committer ... */
1096                return format_person_part(sb, placeholder[1],
1097                                   msg + c->committer.off, c->committer.len,
1098                                   c->pretty_ctx->date_mode);
1099        case 'e':       /* encoding */
1100                strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
1101                return 1;
1102        case 'B':       /* raw body */
1103                /* message_off is always left at the initial newline */
1104                strbuf_addstr(sb, msg + c->message_off + 1);
1105                return 1;
1106        }
1107
1108        /* Now we need to parse the commit message. */
1109        if (!c->commit_message_parsed)
1110                parse_commit_message(c);
1111
1112        switch (placeholder[0]) {
1113        case 's':       /* subject */
1114                format_subject(sb, msg + c->subject_off, " ");
1115                return 1;
1116        case 'f':       /* sanitized subject */
1117                format_sanitized_subject(sb, msg + c->subject_off);
1118                return 1;
1119        case 'b':       /* body */
1120                strbuf_addstr(sb, msg + c->body_off);
1121                return 1;
1122        }
1123        return 0;       /* unknown placeholder */
1124}
1125
1126static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
1127                                 void *context)
1128{
1129        int consumed;
1130        size_t orig_len;
1131        enum {
1132                NO_MAGIC,
1133                ADD_LF_BEFORE_NON_EMPTY,
1134                DEL_LF_BEFORE_EMPTY,
1135                ADD_SP_BEFORE_NON_EMPTY
1136        } magic = NO_MAGIC;
1137
1138        switch (placeholder[0]) {
1139        case '-':
1140                magic = DEL_LF_BEFORE_EMPTY;
1141                break;
1142        case '+':
1143                magic = ADD_LF_BEFORE_NON_EMPTY;
1144                break;
1145        case ' ':
1146                magic = ADD_SP_BEFORE_NON_EMPTY;
1147                break;
1148        default:
1149                break;
1150        }
1151        if (magic != NO_MAGIC)
1152                placeholder++;
1153
1154        orig_len = sb->len;
1155        consumed = format_commit_one(sb, placeholder, context);
1156        if (magic == NO_MAGIC)
1157                return consumed;
1158
1159        if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) {
1160                while (sb->len && sb->buf[sb->len - 1] == '\n')
1161                        strbuf_setlen(sb, sb->len - 1);
1162        } else if (orig_len != sb->len) {
1163                if (magic == ADD_LF_BEFORE_NON_EMPTY)
1164                        strbuf_insert(sb, orig_len, "\n", 1);
1165                else if (magic == ADD_SP_BEFORE_NON_EMPTY)
1166                        strbuf_insert(sb, orig_len, " ", 1);
1167        }
1168        return consumed + 1;
1169}
1170
1171static size_t userformat_want_item(struct strbuf *sb, const char *placeholder,
1172                                   void *context)
1173{
1174        struct userformat_want *w = context;
1175
1176        if (*placeholder == '+' || *placeholder == '-' || *placeholder == ' ')
1177                placeholder++;
1178
1179        switch (*placeholder) {
1180        case 'N':
1181                w->notes = 1;
1182                break;
1183        }
1184        return 0;
1185}
1186
1187void userformat_find_requirements(const char *fmt, struct userformat_want *w)
1188{
1189        struct strbuf dummy = STRBUF_INIT;
1190
1191        if (!fmt) {
1192                if (!user_format)
1193                        return;
1194                fmt = user_format;
1195        }
1196        strbuf_expand(&dummy, fmt, userformat_want_item, w);
1197        strbuf_release(&dummy);
1198}
1199
1200void format_commit_message(const struct commit *commit,
1201                           const char *format, struct strbuf *sb,
1202                           const struct pretty_print_context *pretty_ctx)
1203{
1204        struct format_commit_context context;
1205        static const char utf8[] = "UTF-8";
1206        const char *output_enc = pretty_ctx->output_encoding;
1207
1208        memset(&context, 0, sizeof(context));
1209        context.commit = commit;
1210        context.pretty_ctx = pretty_ctx;
1211        context.wrap_start = sb->len;
1212        context.message = commit->buffer;
1213        if (output_enc) {
1214                char *enc = get_header(commit, "encoding");
1215                if (strcmp(enc ? enc : utf8, output_enc)) {
1216                        context.message = logmsg_reencode(commit, output_enc);
1217                        if (!context.message)
1218                                context.message = commit->buffer;
1219                }
1220                free(enc);
1221        }
1222
1223        strbuf_expand(sb, format, format_commit_item, &context);
1224        rewrap_message_tail(sb, &context, 0, 0, 0);
1225
1226        if (context.message != commit->buffer)
1227                free(context.message);
1228        free(context.signature.gpg_output);
1229        free(context.signature.signer);
1230}
1231
1232static void pp_header(const struct pretty_print_context *pp,
1233                      const char *encoding,
1234                      const struct commit *commit,
1235                      const char **msg_p,
1236                      struct strbuf *sb)
1237{
1238        int parents_shown = 0;
1239
1240        for (;;) {
1241                const char *line = *msg_p;
1242                int linelen = get_one_line(*msg_p);
1243
1244                if (!linelen)
1245                        return;
1246                *msg_p += linelen;
1247
1248                if (linelen == 1)
1249                        /* End of header */
1250                        return;
1251
1252                if (pp->fmt == CMIT_FMT_RAW) {
1253                        strbuf_add(sb, line, linelen);
1254                        continue;
1255                }
1256
1257                if (!memcmp(line, "parent ", 7)) {
1258                        if (linelen != 48)
1259                                die("bad parent line in commit");
1260                        continue;
1261                }
1262
1263                if (!parents_shown) {
1264                        struct commit_list *parent;
1265                        int num;
1266                        for (parent = commit->parents, num = 0;
1267                             parent;
1268                             parent = parent->next, num++)
1269                                ;
1270                        /* with enough slop */
1271                        strbuf_grow(sb, num * 50 + 20);
1272                        add_merge_info(pp, sb, commit);
1273                        parents_shown = 1;
1274                }
1275
1276                /*
1277                 * MEDIUM == DEFAULT shows only author with dates.
1278                 * FULL shows both authors but not dates.
1279                 * FULLER shows both authors and dates.
1280                 */
1281                if (!memcmp(line, "author ", 7)) {
1282                        strbuf_grow(sb, linelen + 80);
1283                        pp_user_info(pp, "Author", sb, line + 7, encoding);
1284                }
1285                if (!memcmp(line, "committer ", 10) &&
1286                    (pp->fmt == CMIT_FMT_FULL || pp->fmt == CMIT_FMT_FULLER)) {
1287                        strbuf_grow(sb, linelen + 80);
1288                        pp_user_info(pp, "Commit", sb, line + 10, encoding);
1289                }
1290        }
1291}
1292
1293void pp_title_line(const struct pretty_print_context *pp,
1294                   const char **msg_p,
1295                   struct strbuf *sb,
1296                   const char *encoding,
1297                   int need_8bit_cte)
1298{
1299        struct strbuf title;
1300
1301        strbuf_init(&title, 80);
1302        *msg_p = format_subject(&title, *msg_p,
1303                                pp->preserve_subject ? "\n" : " ");
1304
1305        strbuf_grow(sb, title.len + 1024);
1306        if (pp->subject) {
1307                strbuf_addstr(sb, pp->subject);
1308                add_rfc2047(sb, title.buf, title.len, encoding);
1309        } else {
1310                strbuf_addbuf(sb, &title);
1311        }
1312        strbuf_addch(sb, '\n');
1313
1314        if (need_8bit_cte > 0) {
1315                const char *header_fmt =
1316                        "MIME-Version: 1.0\n"
1317                        "Content-Type: text/plain; charset=%s\n"
1318                        "Content-Transfer-Encoding: 8bit\n";
1319                strbuf_addf(sb, header_fmt, encoding);
1320        }
1321        if (pp->after_subject) {
1322                strbuf_addstr(sb, pp->after_subject);
1323        }
1324        if (pp->fmt == CMIT_FMT_EMAIL) {
1325                strbuf_addch(sb, '\n');
1326        }
1327        strbuf_release(&title);
1328}
1329
1330void pp_remainder(const struct pretty_print_context *pp,
1331                  const char **msg_p,
1332                  struct strbuf *sb,
1333                  int indent)
1334{
1335        int first = 1;
1336        for (;;) {
1337                const char *line = *msg_p;
1338                int linelen = get_one_line(line);
1339                *msg_p += linelen;
1340
1341                if (!linelen)
1342                        break;
1343
1344                if (is_empty_line(line, &linelen)) {
1345                        if (first)
1346                                continue;
1347                        if (pp->fmt == CMIT_FMT_SHORT)
1348                                break;
1349                }
1350                first = 0;
1351
1352                strbuf_grow(sb, linelen + indent + 20);
1353                if (indent) {
1354                        memset(sb->buf + sb->len, ' ', indent);
1355                        strbuf_setlen(sb, sb->len + indent);
1356                }
1357                strbuf_add(sb, line, linelen);
1358                strbuf_addch(sb, '\n');
1359        }
1360}
1361
1362char *reencode_commit_message(const struct commit *commit, const char **encoding_p)
1363{
1364        const char *encoding;
1365
1366        encoding = get_log_output_encoding();
1367        if (encoding_p)
1368                *encoding_p = encoding;
1369        return logmsg_reencode(commit, encoding);
1370}
1371
1372void pretty_print_commit(const struct pretty_print_context *pp,
1373                         const struct commit *commit,
1374                         struct strbuf *sb)
1375{
1376        unsigned long beginning_of_body;
1377        int indent = 4;
1378        const char *msg = commit->buffer;
1379        char *reencoded;
1380        const char *encoding;
1381        int need_8bit_cte = pp->need_8bit_cte;
1382
1383        if (pp->fmt == CMIT_FMT_USERFORMAT) {
1384                format_commit_message(commit, user_format, sb, pp);
1385                return;
1386        }
1387
1388        reencoded = reencode_commit_message(commit, &encoding);
1389        if (reencoded) {
1390                msg = reencoded;
1391        }
1392
1393        if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
1394                indent = 0;
1395
1396        /*
1397         * We need to check and emit Content-type: to mark it
1398         * as 8-bit if we haven't done so.
1399         */
1400        if (pp->fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) {
1401                int i, ch, in_body;
1402
1403                for (in_body = i = 0; (ch = msg[i]); i++) {
1404                        if (!in_body) {
1405                                /* author could be non 7-bit ASCII but
1406                                 * the log may be so; skip over the
1407                                 * header part first.
1408                                 */
1409                                if (ch == '\n' && msg[i+1] == '\n')
1410                                        in_body = 1;
1411                        }
1412                        else if (non_ascii(ch)) {
1413                                need_8bit_cte = 1;
1414                                break;
1415                        }
1416                }
1417        }
1418
1419        pp_header(pp, encoding, commit, &msg, sb);
1420        if (pp->fmt != CMIT_FMT_ONELINE && !pp->subject) {
1421                strbuf_addch(sb, '\n');
1422        }
1423
1424        /* Skip excess blank lines at the beginning of body, if any... */
1425        msg = skip_empty_lines(msg);
1426
1427        /* These formats treat the title line specially. */
1428        if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
1429                pp_title_line(pp, &msg, sb, encoding, need_8bit_cte);
1430
1431        beginning_of_body = sb->len;
1432        if (pp->fmt != CMIT_FMT_ONELINE)
1433                pp_remainder(pp, &msg, sb, indent);
1434        strbuf_rtrim(sb);
1435
1436        /* Make sure there is an EOLN for the non-oneline case */
1437        if (pp->fmt != CMIT_FMT_ONELINE)
1438                strbuf_addch(sb, '\n');
1439
1440        /*
1441         * The caller may append additional body text in e-mail
1442         * format.  Make sure we did not strip the blank line
1443         * between the header and the body.
1444         */
1445        if (pp->fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
1446                strbuf_addch(sb, '\n');
1447
1448        if (pp->show_notes)
1449                format_display_notes(commit->object.sha1, sb, encoding,
1450                                     NOTES_SHOW_HEADER | NOTES_INDENT);
1451
1452        free(reencoded);
1453}
1454
1455void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit,
1456                    struct strbuf *sb)
1457{
1458        struct pretty_print_context pp = {0};
1459        pp.fmt = fmt;
1460        pretty_print_commit(&pp, commit, sb);
1461}