Andrew's git / gitweb.git / pretty.c
?
pretty.con commit Merge branch 'db/remote-builtin' into jk/send-pack (a108e53)
   1#include "cache.h"
   2#include "commit.h"
   3#include "interpolate.h"
   4#include "utf8.h"
   5#include "diff.h"
   6#include "revision.h"
   7
   8static struct cmt_fmt_map {
   9        const char *n;
  10        size_t cmp_len;
  11        enum cmit_fmt v;
  12} cmt_fmts[] = {
  13        { "raw",        1,      CMIT_FMT_RAW },
  14        { "medium",     1,      CMIT_FMT_MEDIUM },
  15        { "short",      1,      CMIT_FMT_SHORT },
  16        { "email",      1,      CMIT_FMT_EMAIL },
  17        { "full",       5,      CMIT_FMT_FULL },
  18        { "fuller",     5,      CMIT_FMT_FULLER },
  19        { "oneline",    1,      CMIT_FMT_ONELINE },
  20        { "format:",    7,      CMIT_FMT_USERFORMAT},
  21};
  22
  23static char *user_format;
  24
  25enum cmit_fmt get_commit_format(const char *arg)
  26{
  27        int i;
  28
  29        if (!arg || !*arg)
  30                return CMIT_FMT_DEFAULT;
  31        if (*arg == '=')
  32                arg++;
  33        if (!prefixcmp(arg, "format:")) {
  34                if (user_format)
  35                        free(user_format);
  36                user_format = xstrdup(arg + 7);
  37                return CMIT_FMT_USERFORMAT;
  38        }
  39        for (i = 0; i < ARRAY_SIZE(cmt_fmts); i++) {
  40                if (!strncmp(arg, cmt_fmts[i].n, cmt_fmts[i].cmp_len) &&
  41                    !strncmp(arg, cmt_fmts[i].n, strlen(arg)))
  42                        return cmt_fmts[i].v;
  43        }
  44
  45        die("invalid --pretty format: %s", arg);
  46}
  47
  48/*
  49 * Generic support for pretty-printing the header
  50 */
  51static int get_one_line(const char *msg)
  52{
  53        int ret = 0;
  54
  55        for (;;) {
  56                char c = *msg++;
  57                if (!c)
  58                        break;
  59                ret++;
  60                if (c == '\n')
  61                        break;
  62        }
  63        return ret;
  64}
  65
  66/* High bit set, or ISO-2022-INT */
  67int non_ascii(int ch)
  68{
  69        ch = (ch & 0xff);
  70        return ((ch & 0x80) || (ch == 0x1b));
  71}
  72
  73static int is_rfc2047_special(char ch)
  74{
  75        return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_'));
  76}
  77
  78static void add_rfc2047(struct strbuf *sb, const char *line, int len,
  79                       const char *encoding)
  80{
  81        int i, last;
  82
  83        for (i = 0; i < len; i++) {
  84                int ch = line[i];
  85                if (non_ascii(ch))
  86                        goto needquote;
  87                if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
  88                        goto needquote;
  89        }
  90        strbuf_add(sb, line, len);
  91        return;
  92
  93needquote:
  94        strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
  95        strbuf_addf(sb, "=?%s?q?", encoding);
  96        for (i = last = 0; i < len; i++) {
  97                unsigned ch = line[i] & 0xFF;
  98                /*
  99                 * We encode ' ' using '=20' even though rfc2047
 100                 * allows using '_' for readability.  Unfortunately,
 101                 * many programs do not understand this and just
 102                 * leave the underscore in place.
 103                 */
 104                if (is_rfc2047_special(ch) || ch == ' ') {
 105                        strbuf_add(sb, line + last, i - last);
 106                        strbuf_addf(sb, "=%02X", ch);
 107                        last = i + 1;
 108                }
 109        }
 110        strbuf_add(sb, line + last, len - last);
 111        strbuf_addstr(sb, "?=");
 112}
 113
 114static void add_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,
 115                         const char *line, enum date_mode dmode,
 116                         const char *encoding)
 117{
 118        char *date;
 119        int namelen;
 120        unsigned long time;
 121        int tz;
 122        const char *filler = "    ";
 123
 124        if (fmt == CMIT_FMT_ONELINE)
 125                return;
 126        date = strchr(line, '>');
 127        if (!date)
 128                return;
 129        namelen = ++date - line;
 130        time = strtoul(date, &date, 10);
 131        tz = strtol(date, NULL, 10);
 132
 133        if (fmt == CMIT_FMT_EMAIL) {
 134                char *name_tail = strchr(line, '<');
 135                int display_name_length;
 136                if (!name_tail)
 137                        return;
 138                while (line < name_tail && isspace(name_tail[-1]))
 139                        name_tail--;
 140                display_name_length = name_tail - line;
 141                filler = "";
 142                strbuf_addstr(sb, "From: ");
 143                add_rfc2047(sb, line, display_name_length, encoding);
 144                strbuf_add(sb, name_tail, namelen - display_name_length);
 145                strbuf_addch(sb, '\n');
 146        } else {
 147                strbuf_addf(sb, "%s: %.*s%.*s\n", what,
 148                              (fmt == CMIT_FMT_FULLER) ? 4 : 0,
 149                              filler, namelen, line);
 150        }
 151        switch (fmt) {
 152        case CMIT_FMT_MEDIUM:
 153                strbuf_addf(sb, "Date:   %s\n", show_date(time, tz, dmode));
 154                break;
 155        case CMIT_FMT_EMAIL:
 156                strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822));
 157                break;
 158        case CMIT_FMT_FULLER:
 159                strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, dmode));
 160                break;
 161        default:
 162                /* notin' */
 163                break;
 164        }
 165}
 166
 167static int is_empty_line(const char *line, int *len_p)
 168{
 169        int len = *len_p;
 170        while (len && isspace(line[len-1]))
 171                len--;
 172        *len_p = len;
 173        return !len;
 174}
 175
 176static void add_merge_info(enum cmit_fmt fmt, struct strbuf *sb,
 177                        const struct commit *commit, int abbrev)
 178{
 179        struct commit_list *parent = commit->parents;
 180
 181        if ((fmt == CMIT_FMT_ONELINE) || (fmt == CMIT_FMT_EMAIL) ||
 182            !parent || !parent->next)
 183                return;
 184
 185        strbuf_addstr(sb, "Merge:");
 186
 187        while (parent) {
 188                struct commit *p = parent->item;
 189                const char *hex = NULL;
 190                const char *dots;
 191                if (abbrev)
 192                        hex = find_unique_abbrev(p->object.sha1, abbrev);
 193                if (!hex)
 194                        hex = sha1_to_hex(p->object.sha1);
 195                dots = (abbrev && strlen(hex) != 40) ?  "..." : "";
 196                parent = parent->next;
 197
 198                strbuf_addf(sb, " %s%s", hex, dots);
 199        }
 200        strbuf_addch(sb, '\n');
 201}
 202
 203static char *get_header(const struct commit *commit, const char *key)
 204{
 205        int key_len = strlen(key);
 206        const char *line = commit->buffer;
 207
 208        for (;;) {
 209                const char *eol = strchr(line, '\n'), *next;
 210
 211                if (line == eol)
 212                        return NULL;
 213                if (!eol) {
 214                        eol = line + strlen(line);
 215                        next = NULL;
 216                } else
 217                        next = eol + 1;
 218                if (eol - line > key_len &&
 219                    !strncmp(line, key, key_len) &&
 220                    line[key_len] == ' ') {
 221                        return xmemdupz(line + key_len + 1, eol - line - key_len - 1);
 222                }
 223                line = next;
 224        }
 225}
 226
 227static char *replace_encoding_header(char *buf, const char *encoding)
 228{
 229        struct strbuf tmp;
 230        size_t start, len;
 231        char *cp = buf;
 232
 233        /* guess if there is an encoding header before a \n\n */
 234        while (strncmp(cp, "encoding ", strlen("encoding "))) {
 235                cp = strchr(cp, '\n');
 236                if (!cp || *++cp == '\n')
 237                        return buf;
 238        }
 239        start = cp - buf;
 240        cp = strchr(cp, '\n');
 241        if (!cp)
 242                return buf; /* should not happen but be defensive */
 243        len = cp + 1 - (buf + start);
 244
 245        strbuf_init(&tmp, 0);
 246        strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
 247        if (is_encoding_utf8(encoding)) {
 248                /* we have re-coded to UTF-8; drop the header */
 249                strbuf_remove(&tmp, start, len);
 250        } else {
 251                /* just replaces XXXX in 'encoding XXXX\n' */
 252                strbuf_splice(&tmp, start + strlen("encoding "),
 253                                          len - strlen("encoding \n"),
 254                                          encoding, strlen(encoding));
 255        }
 256        return strbuf_detach(&tmp, NULL);
 257}
 258
 259static char *logmsg_reencode(const struct commit *commit,
 260                             const char *output_encoding)
 261{
 262        static const char *utf8 = "utf-8";
 263        const char *use_encoding;
 264        char *encoding;
 265        char *out;
 266
 267        if (!*output_encoding)
 268                return NULL;
 269        encoding = get_header(commit, "encoding");
 270        use_encoding = encoding ? encoding : utf8;
 271        if (!strcmp(use_encoding, output_encoding))
 272                if (encoding) /* we'll strip encoding header later */
 273                        out = xstrdup(commit->buffer);
 274                else
 275                        return NULL; /* nothing to do */
 276        else
 277                out = reencode_string(commit->buffer,
 278                                      output_encoding, use_encoding);
 279        if (out)
 280                out = replace_encoding_header(out, output_encoding);
 281
 282        free(encoding);
 283        return out;
 284}
 285
 286static void fill_person(struct interp *table, const char *msg, int len)
 287{
 288        int start, end, tz = 0;
 289        unsigned long date;
 290        char *ep;
 291
 292        /* parse name */
 293        for (end = 0; end < len && msg[end] != '<'; end++)
 294                ; /* do nothing */
 295        start = end + 1;
 296        while (end > 0 && isspace(msg[end - 1]))
 297                end--;
 298        table[0].value = xmemdupz(msg, end);
 299
 300        if (start >= len)
 301                return;
 302
 303        /* parse email */
 304        for (end = start + 1; end < len && msg[end] != '>'; end++)
 305                ; /* do nothing */
 306
 307        if (end >= len)
 308                return;
 309
 310        table[1].value = xmemdupz(msg + start, end - start);
 311
 312        /* parse date */
 313        for (start = end + 1; start < len && isspace(msg[start]); start++)
 314                ; /* do nothing */
 315        if (start >= len)
 316                return;
 317        date = strtoul(msg + start, &ep, 10);
 318        if (msg + start == ep)
 319                return;
 320
 321        table[5].value = xmemdupz(msg + start, ep - (msg + start));
 322
 323        /* parse tz */
 324        for (start = ep - msg + 1; start < len && isspace(msg[start]); start++)
 325                ; /* do nothing */
 326        if (start + 1 < len) {
 327                tz = strtoul(msg + start + 1, NULL, 10);
 328                if (msg[start] == '-')
 329                        tz = -tz;
 330        }
 331
 332        interp_set_entry(table, 2, show_date(date, tz, DATE_NORMAL));
 333        interp_set_entry(table, 3, show_date(date, tz, DATE_RFC2822));
 334        interp_set_entry(table, 4, show_date(date, tz, DATE_RELATIVE));
 335        interp_set_entry(table, 6, show_date(date, tz, DATE_ISO8601));
 336}
 337
 338void format_commit_message(const struct commit *commit,
 339                           const void *format, struct strbuf *sb)
 340{
 341        struct interp table[] = {
 342                { "%H" },       /* commit hash */
 343                { "%h" },       /* abbreviated commit hash */
 344                { "%T" },       /* tree hash */
 345                { "%t" },       /* abbreviated tree hash */
 346                { "%P" },       /* parent hashes */
 347                { "%p" },       /* abbreviated parent hashes */
 348                { "%an" },      /* author name */
 349                { "%ae" },      /* author email */
 350                { "%ad" },      /* author date */
 351                { "%aD" },      /* author date, RFC2822 style */
 352                { "%ar" },      /* author date, relative */
 353                { "%at" },      /* author date, UNIX timestamp */
 354                { "%ai" },      /* author date, ISO 8601 */
 355                { "%cn" },      /* committer name */
 356                { "%ce" },      /* committer email */
 357                { "%cd" },      /* committer date */
 358                { "%cD" },      /* committer date, RFC2822 style */
 359                { "%cr" },      /* committer date, relative */
 360                { "%ct" },      /* committer date, UNIX timestamp */
 361                { "%ci" },      /* committer date, ISO 8601 */
 362                { "%e" },       /* encoding */
 363                { "%s" },       /* subject */
 364                { "%b" },       /* body */
 365                { "%Cred" },    /* red */
 366                { "%Cgreen" },  /* green */
 367                { "%Cblue" },   /* blue */
 368                { "%Creset" },  /* reset color */
 369                { "%n" },       /* newline */
 370                { "%m" },       /* left/right/bottom */
 371        };
 372        enum interp_index {
 373                IHASH = 0, IHASH_ABBREV,
 374                ITREE, ITREE_ABBREV,
 375                IPARENTS, IPARENTS_ABBREV,
 376                IAUTHOR_NAME, IAUTHOR_EMAIL,
 377                IAUTHOR_DATE, IAUTHOR_DATE_RFC2822, IAUTHOR_DATE_RELATIVE,
 378                IAUTHOR_TIMESTAMP, IAUTHOR_ISO8601,
 379                ICOMMITTER_NAME, ICOMMITTER_EMAIL,
 380                ICOMMITTER_DATE, ICOMMITTER_DATE_RFC2822,
 381                ICOMMITTER_DATE_RELATIVE, ICOMMITTER_TIMESTAMP,
 382                ICOMMITTER_ISO8601,
 383                IENCODING,
 384                ISUBJECT,
 385                IBODY,
 386                IRED, IGREEN, IBLUE, IRESET_COLOR,
 387                INEWLINE,
 388                ILEFT_RIGHT,
 389        };
 390        struct commit_list *p;
 391        char parents[1024];
 392        unsigned long len;
 393        int i;
 394        enum { HEADER, SUBJECT, BODY } state;
 395        const char *msg = commit->buffer;
 396
 397        if (ILEFT_RIGHT + 1 != ARRAY_SIZE(table))
 398                die("invalid interp table!");
 399
 400        /* these are independent of the commit */
 401        interp_set_entry(table, IRED, "\033[31m");
 402        interp_set_entry(table, IGREEN, "\033[32m");
 403        interp_set_entry(table, IBLUE, "\033[34m");
 404        interp_set_entry(table, IRESET_COLOR, "\033[m");
 405        interp_set_entry(table, INEWLINE, "\n");
 406
 407        /* these depend on the commit */
 408        if (!commit->object.parsed)
 409                parse_object(commit->object.sha1);
 410        interp_set_entry(table, IHASH, sha1_to_hex(commit->object.sha1));
 411        interp_set_entry(table, IHASH_ABBREV,
 412                        find_unique_abbrev(commit->object.sha1,
 413                                DEFAULT_ABBREV));
 414        interp_set_entry(table, ITREE, sha1_to_hex(commit->tree->object.sha1));
 415        interp_set_entry(table, ITREE_ABBREV,
 416                        find_unique_abbrev(commit->tree->object.sha1,
 417                                DEFAULT_ABBREV));
 418        interp_set_entry(table, ILEFT_RIGHT,
 419                         (commit->object.flags & BOUNDARY)
 420                         ? "-"
 421                         : (commit->object.flags & SYMMETRIC_LEFT)
 422                         ? "<"
 423                         : ">");
 424
 425        parents[1] = 0;
 426        for (i = 0, p = commit->parents;
 427                        p && i < sizeof(parents) - 1;
 428                        p = p->next)
 429                i += snprintf(parents + i, sizeof(parents) - i - 1, " %s",
 430                        sha1_to_hex(p->item->object.sha1));
 431        interp_set_entry(table, IPARENTS, parents + 1);
 432
 433        parents[1] = 0;
 434        for (i = 0, p = commit->parents;
 435                        p && i < sizeof(parents) - 1;
 436                        p = p->next)
 437                i += snprintf(parents + i, sizeof(parents) - i - 1, " %s",
 438                        find_unique_abbrev(p->item->object.sha1,
 439                                DEFAULT_ABBREV));
 440        interp_set_entry(table, IPARENTS_ABBREV, parents + 1);
 441
 442        for (i = 0, state = HEADER; msg[i] && state < BODY; i++) {
 443                int eol;
 444                for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
 445                        ; /* do nothing */
 446
 447                if (state == SUBJECT) {
 448                        table[ISUBJECT].value = xmemdupz(msg + i, eol - i);
 449                        i = eol;
 450                }
 451                if (i == eol) {
 452                        state++;
 453                        /* strip empty lines */
 454                        while (msg[eol + 1] == '\n')
 455                                eol++;
 456                } else if (!prefixcmp(msg + i, "author "))
 457                        fill_person(table + IAUTHOR_NAME,
 458                                        msg + i + 7, eol - i - 7);
 459                else if (!prefixcmp(msg + i, "committer "))
 460                        fill_person(table + ICOMMITTER_NAME,
 461                                        msg + i + 10, eol - i - 10);
 462                else if (!prefixcmp(msg + i, "encoding "))
 463                        table[IENCODING].value =
 464                                xmemdupz(msg + i + 9, eol - i - 9);
 465                i = eol;
 466        }
 467        if (msg[i])
 468                table[IBODY].value = xstrdup(msg + i);
 469
 470        len = interpolate(sb->buf + sb->len, strbuf_avail(sb),
 471                                format, table, ARRAY_SIZE(table));
 472        if (len > strbuf_avail(sb)) {
 473                strbuf_grow(sb, len);
 474                interpolate(sb->buf + sb->len, strbuf_avail(sb) + 1,
 475                                        format, table, ARRAY_SIZE(table));
 476        }
 477        strbuf_setlen(sb, sb->len + len);
 478        interp_clear_table(table, ARRAY_SIZE(table));
 479}
 480
 481static void pp_header(enum cmit_fmt fmt,
 482                      int abbrev,
 483                      enum date_mode dmode,
 484                      const char *encoding,
 485                      const struct commit *commit,
 486                      const char **msg_p,
 487                      struct strbuf *sb)
 488{
 489        int parents_shown = 0;
 490
 491        for (;;) {
 492                const char *line = *msg_p;
 493                int linelen = get_one_line(*msg_p);
 494
 495                if (!linelen)
 496                        return;
 497                *msg_p += linelen;
 498
 499                if (linelen == 1)
 500                        /* End of header */
 501                        return;
 502
 503                if (fmt == CMIT_FMT_RAW) {
 504                        strbuf_add(sb, line, linelen);
 505                        continue;
 506                }
 507
 508                if (!memcmp(line, "parent ", 7)) {
 509                        if (linelen != 48)
 510                                die("bad parent line in commit");
 511                        continue;
 512                }
 513
 514                if (!parents_shown) {
 515                        struct commit_list *parent;
 516                        int num;
 517                        for (parent = commit->parents, num = 0;
 518                             parent;
 519                             parent = parent->next, num++)
 520                                ;
 521                        /* with enough slop */
 522                        strbuf_grow(sb, num * 50 + 20);
 523                        add_merge_info(fmt, sb, commit, abbrev);
 524                        parents_shown = 1;
 525                }
 526
 527                /*
 528                 * MEDIUM == DEFAULT shows only author with dates.
 529                 * FULL shows both authors but not dates.
 530                 * FULLER shows both authors and dates.
 531                 */
 532                if (!memcmp(line, "author ", 7)) {
 533                        strbuf_grow(sb, linelen + 80);
 534                        add_user_info("Author", fmt, sb, line + 7, dmode, encoding);
 535                }
 536                if (!memcmp(line, "committer ", 10) &&
 537                    (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) {
 538                        strbuf_grow(sb, linelen + 80);
 539                        add_user_info("Commit", fmt, sb, line + 10, dmode, encoding);
 540                }
 541        }
 542}
 543
 544static void pp_title_line(enum cmit_fmt fmt,
 545                          const char **msg_p,
 546                          struct strbuf *sb,
 547                          const char *subject,
 548                          const char *after_subject,
 549                          const char *encoding,
 550                          int plain_non_ascii)
 551{
 552        struct strbuf title;
 553
 554        strbuf_init(&title, 80);
 555
 556        for (;;) {
 557                const char *line = *msg_p;
 558                int linelen = get_one_line(line);
 559
 560                *msg_p += linelen;
 561                if (!linelen || is_empty_line(line, &linelen))
 562                        break;
 563
 564                strbuf_grow(&title, linelen + 2);
 565                if (title.len) {
 566                        if (fmt == CMIT_FMT_EMAIL) {
 567                                strbuf_addch(&title, '\n');
 568                        }
 569                        strbuf_addch(&title, ' ');
 570                }
 571                strbuf_add(&title, line, linelen);
 572        }
 573
 574        strbuf_grow(sb, title.len + 1024);
 575        if (subject) {
 576                strbuf_addstr(sb, subject);
 577                add_rfc2047(sb, title.buf, title.len, encoding);
 578        } else {
 579                strbuf_addbuf(sb, &title);
 580        }
 581        strbuf_addch(sb, '\n');
 582
 583        if (plain_non_ascii) {
 584                const char *header_fmt =
 585                        "MIME-Version: 1.0\n"
 586                        "Content-Type: text/plain; charset=%s\n"
 587                        "Content-Transfer-Encoding: 8bit\n";
 588                strbuf_addf(sb, header_fmt, encoding);
 589        }
 590        if (after_subject) {
 591                strbuf_addstr(sb, after_subject);
 592        }
 593        if (fmt == CMIT_FMT_EMAIL) {
 594                strbuf_addch(sb, '\n');
 595        }
 596        strbuf_release(&title);
 597}
 598
 599static void pp_remainder(enum cmit_fmt fmt,
 600                         const char **msg_p,
 601                         struct strbuf *sb,
 602                         int indent)
 603{
 604        int first = 1;
 605        for (;;) {
 606                const char *line = *msg_p;
 607                int linelen = get_one_line(line);
 608                *msg_p += linelen;
 609
 610                if (!linelen)
 611                        break;
 612
 613                if (is_empty_line(line, &linelen)) {
 614                        if (first)
 615                                continue;
 616                        if (fmt == CMIT_FMT_SHORT)
 617                                break;
 618                }
 619                first = 0;
 620
 621                strbuf_grow(sb, linelen + indent + 20);
 622                if (indent) {
 623                        memset(sb->buf + sb->len, ' ', indent);
 624                        strbuf_setlen(sb, sb->len + indent);
 625                }
 626                strbuf_add(sb, line, linelen);
 627                strbuf_addch(sb, '\n');
 628        }
 629}
 630
 631void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
 632                                  struct strbuf *sb, int abbrev,
 633                                  const char *subject, const char *after_subject,
 634                                  enum date_mode dmode, int plain_non_ascii)
 635{
 636        unsigned long beginning_of_body;
 637        int indent = 4;
 638        const char *msg = commit->buffer;
 639        char *reencoded;
 640        const char *encoding;
 641
 642        if (fmt == CMIT_FMT_USERFORMAT) {
 643                format_commit_message(commit, user_format, sb);
 644                return;
 645        }
 646
 647        encoding = (git_log_output_encoding
 648                    ? git_log_output_encoding
 649                    : git_commit_encoding);
 650        if (!encoding)
 651                encoding = "utf-8";
 652        reencoded = logmsg_reencode(commit, encoding);
 653        if (reencoded) {
 654                msg = reencoded;
 655        }
 656
 657        if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
 658                indent = 0;
 659
 660        /* After-subject is used to pass in Content-Type: multipart
 661         * MIME header; in that case we do not have to do the
 662         * plaintext content type even if the commit message has
 663         * non 7-bit ASCII character.  Otherwise, check if we need
 664         * to say this is not a 7-bit ASCII.
 665         */
 666        if (fmt == CMIT_FMT_EMAIL && !after_subject) {
 667                int i, ch, in_body;
 668
 669                for (in_body = i = 0; (ch = msg[i]); i++) {
 670                        if (!in_body) {
 671                                /* author could be non 7-bit ASCII but
 672                                 * the log may be so; skip over the
 673                                 * header part first.
 674                                 */
 675                                if (ch == '\n' && msg[i+1] == '\n')
 676                                        in_body = 1;
 677                        }
 678                        else if (non_ascii(ch)) {
 679                                plain_non_ascii = 1;
 680                                break;
 681                        }
 682                }
 683        }
 684
 685        pp_header(fmt, abbrev, dmode, encoding, commit, &msg, sb);
 686        if (fmt != CMIT_FMT_ONELINE && !subject) {
 687                strbuf_addch(sb, '\n');
 688        }
 689
 690        /* Skip excess blank lines at the beginning of body, if any... */
 691        for (;;) {
 692                int linelen = get_one_line(msg);
 693                int ll = linelen;
 694                if (!linelen)
 695                        break;
 696                if (!is_empty_line(msg, &ll))
 697                        break;
 698                msg += linelen;
 699        }
 700
 701        /* These formats treat the title line specially. */
 702        if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
 703                pp_title_line(fmt, &msg, sb, subject,
 704                              after_subject, encoding, plain_non_ascii);
 705
 706        beginning_of_body = sb->len;
 707        if (fmt != CMIT_FMT_ONELINE)
 708                pp_remainder(fmt, &msg, sb, indent);
 709        strbuf_rtrim(sb);
 710
 711        /* Make sure there is an EOLN for the non-oneline case */
 712        if (fmt != CMIT_FMT_ONELINE)
 713                strbuf_addch(sb, '\n');
 714
 715        /*
 716         * The caller may append additional body text in e-mail
 717         * format.  Make sure we did not strip the blank line
 718         * between the header and the body.
 719         */
 720        if (fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
 721                strbuf_addch(sb, '\n');
 722        free(reencoded);
 723}