pretty.con commit Merge git://repo.or.cz/git-gui (144126a)
   1#include "cache.h"
   2#include "commit.h"
   3#include "utf8.h"
   4#include "diff.h"
   5#include "revision.h"
   6
   7static struct cmt_fmt_map {
   8        const char *n;
   9        size_t cmp_len;
  10        enum cmit_fmt v;
  11} cmt_fmts[] = {
  12        { "raw",        1,      CMIT_FMT_RAW },
  13        { "medium",     1,      CMIT_FMT_MEDIUM },
  14        { "short",      1,      CMIT_FMT_SHORT },
  15        { "email",      1,      CMIT_FMT_EMAIL },
  16        { "full",       5,      CMIT_FMT_FULL },
  17        { "fuller",     5,      CMIT_FMT_FULLER },
  18        { "oneline",    1,      CMIT_FMT_ONELINE },
  19        { "format:",    7,      CMIT_FMT_USERFORMAT},
  20};
  21
  22static char *user_format;
  23
  24enum cmit_fmt get_commit_format(const char *arg)
  25{
  26        int i;
  27
  28        if (!arg || !*arg)
  29                return CMIT_FMT_DEFAULT;
  30        if (*arg == '=')
  31                arg++;
  32        if (!prefixcmp(arg, "format:")) {
  33                if (user_format)
  34                        free(user_format);
  35                user_format = xstrdup(arg + 7);
  36                return CMIT_FMT_USERFORMAT;
  37        }
  38        for (i = 0; i < ARRAY_SIZE(cmt_fmts); i++) {
  39                if (!strncmp(arg, cmt_fmts[i].n, cmt_fmts[i].cmp_len) &&
  40                    !strncmp(arg, cmt_fmts[i].n, strlen(arg)))
  41                        return cmt_fmts[i].v;
  42        }
  43
  44        die("invalid --pretty format: %s", arg);
  45}
  46
  47/*
  48 * Generic support for pretty-printing the header
  49 */
  50static int get_one_line(const char *msg)
  51{
  52        int ret = 0;
  53
  54        for (;;) {
  55                char c = *msg++;
  56                if (!c)
  57                        break;
  58                ret++;
  59                if (c == '\n')
  60                        break;
  61        }
  62        return ret;
  63}
  64
  65/* High bit set, or ISO-2022-INT */
  66int non_ascii(int ch)
  67{
  68        ch = (ch & 0xff);
  69        return ((ch & 0x80) || (ch == 0x1b));
  70}
  71
  72static int is_rfc2047_special(char ch)
  73{
  74        return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_'));
  75}
  76
  77static void add_rfc2047(struct strbuf *sb, const char *line, int len,
  78                       const char *encoding)
  79{
  80        int i, last;
  81
  82        for (i = 0; i < len; i++) {
  83                int ch = line[i];
  84                if (non_ascii(ch))
  85                        goto needquote;
  86                if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
  87                        goto needquote;
  88        }
  89        strbuf_add(sb, line, len);
  90        return;
  91
  92needquote:
  93        strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
  94        strbuf_addf(sb, "=?%s?q?", encoding);
  95        for (i = last = 0; i < len; i++) {
  96                unsigned ch = line[i] & 0xFF;
  97                /*
  98                 * We encode ' ' using '=20' even though rfc2047
  99                 * allows using '_' for readability.  Unfortunately,
 100                 * many programs do not understand this and just
 101                 * leave the underscore in place.
 102                 */
 103                if (is_rfc2047_special(ch) || ch == ' ') {
 104                        strbuf_add(sb, line + last, i - last);
 105                        strbuf_addf(sb, "=%02X", ch);
 106                        last = i + 1;
 107                }
 108        }
 109        strbuf_add(sb, line + last, len - last);
 110        strbuf_addstr(sb, "?=");
 111}
 112
 113static void add_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,
 114                         const char *line, enum date_mode dmode,
 115                         const char *encoding)
 116{
 117        char *date;
 118        int namelen;
 119        unsigned long time;
 120        int tz;
 121        const char *filler = "    ";
 122
 123        if (fmt == CMIT_FMT_ONELINE)
 124                return;
 125        date = strchr(line, '>');
 126        if (!date)
 127                return;
 128        namelen = ++date - line;
 129        time = strtoul(date, &date, 10);
 130        tz = strtol(date, NULL, 10);
 131
 132        if (fmt == CMIT_FMT_EMAIL) {
 133                char *name_tail = strchr(line, '<');
 134                int display_name_length;
 135                if (!name_tail)
 136                        return;
 137                while (line < name_tail && isspace(name_tail[-1]))
 138                        name_tail--;
 139                display_name_length = name_tail - line;
 140                filler = "";
 141                strbuf_addstr(sb, "From: ");
 142                add_rfc2047(sb, line, display_name_length, encoding);
 143                strbuf_add(sb, name_tail, namelen - display_name_length);
 144                strbuf_addch(sb, '\n');
 145        } else {
 146                strbuf_addf(sb, "%s: %.*s%.*s\n", what,
 147                              (fmt == CMIT_FMT_FULLER) ? 4 : 0,
 148                              filler, namelen, line);
 149        }
 150        switch (fmt) {
 151        case CMIT_FMT_MEDIUM:
 152                strbuf_addf(sb, "Date:   %s\n", show_date(time, tz, dmode));
 153                break;
 154        case CMIT_FMT_EMAIL:
 155                strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822));
 156                break;
 157        case CMIT_FMT_FULLER:
 158                strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, dmode));
 159                break;
 160        default:
 161                /* notin' */
 162                break;
 163        }
 164}
 165
 166static int is_empty_line(const char *line, int *len_p)
 167{
 168        int len = *len_p;
 169        while (len && isspace(line[len-1]))
 170                len--;
 171        *len_p = len;
 172        return !len;
 173}
 174
 175static void add_merge_info(enum cmit_fmt fmt, struct strbuf *sb,
 176                        const struct commit *commit, int abbrev)
 177{
 178        struct commit_list *parent = commit->parents;
 179
 180        if ((fmt == CMIT_FMT_ONELINE) || (fmt == CMIT_FMT_EMAIL) ||
 181            !parent || !parent->next)
 182                return;
 183
 184        strbuf_addstr(sb, "Merge:");
 185
 186        while (parent) {
 187                struct commit *p = parent->item;
 188                const char *hex = NULL;
 189                const char *dots;
 190                if (abbrev)
 191                        hex = find_unique_abbrev(p->object.sha1, abbrev);
 192                if (!hex)
 193                        hex = sha1_to_hex(p->object.sha1);
 194                dots = (abbrev && strlen(hex) != 40) ?  "..." : "";
 195                parent = parent->next;
 196
 197                strbuf_addf(sb, " %s%s", hex, dots);
 198        }
 199        strbuf_addch(sb, '\n');
 200}
 201
 202static char *get_header(const struct commit *commit, const char *key)
 203{
 204        int key_len = strlen(key);
 205        const char *line = commit->buffer;
 206
 207        for (;;) {
 208                const char *eol = strchr(line, '\n'), *next;
 209
 210                if (line == eol)
 211                        return NULL;
 212                if (!eol) {
 213                        eol = line + strlen(line);
 214                        next = NULL;
 215                } else
 216                        next = eol + 1;
 217                if (eol - line > key_len &&
 218                    !strncmp(line, key, key_len) &&
 219                    line[key_len] == ' ') {
 220                        return xmemdupz(line + key_len + 1, eol - line - key_len - 1);
 221                }
 222                line = next;
 223        }
 224}
 225
 226static char *replace_encoding_header(char *buf, const char *encoding)
 227{
 228        struct strbuf tmp;
 229        size_t start, len;
 230        char *cp = buf;
 231
 232        /* guess if there is an encoding header before a \n\n */
 233        while (strncmp(cp, "encoding ", strlen("encoding "))) {
 234                cp = strchr(cp, '\n');
 235                if (!cp || *++cp == '\n')
 236                        return buf;
 237        }
 238        start = cp - buf;
 239        cp = strchr(cp, '\n');
 240        if (!cp)
 241                return buf; /* should not happen but be defensive */
 242        len = cp + 1 - (buf + start);
 243
 244        strbuf_init(&tmp, 0);
 245        strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
 246        if (is_encoding_utf8(encoding)) {
 247                /* we have re-coded to UTF-8; drop the header */
 248                strbuf_remove(&tmp, start, len);
 249        } else {
 250                /* just replaces XXXX in 'encoding XXXX\n' */
 251                strbuf_splice(&tmp, start + strlen("encoding "),
 252                                          len - strlen("encoding \n"),
 253                                          encoding, strlen(encoding));
 254        }
 255        return strbuf_detach(&tmp, NULL);
 256}
 257
 258static char *logmsg_reencode(const struct commit *commit,
 259                             const char *output_encoding)
 260{
 261        static const char *utf8 = "utf-8";
 262        const char *use_encoding;
 263        char *encoding;
 264        char *out;
 265
 266        if (!*output_encoding)
 267                return NULL;
 268        encoding = get_header(commit, "encoding");
 269        use_encoding = encoding ? encoding : utf8;
 270        if (!strcmp(use_encoding, output_encoding))
 271                if (encoding) /* we'll strip encoding header later */
 272                        out = xstrdup(commit->buffer);
 273                else
 274                        return NULL; /* nothing to do */
 275        else
 276                out = reencode_string(commit->buffer,
 277                                      output_encoding, use_encoding);
 278        if (out)
 279                out = replace_encoding_header(out, output_encoding);
 280
 281        free(encoding);
 282        return out;
 283}
 284
 285static void format_person_part(struct strbuf *sb, char part,
 286                               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        if (part == 'n') {      /* name */
 299                strbuf_add(sb, msg, end);
 300                return;
 301        }
 302
 303        if (start >= len)
 304                return;
 305
 306        /* parse email */
 307        for (end = start + 1; end < len && msg[end] != '>'; end++)
 308                ; /* do nothing */
 309
 310        if (end >= len)
 311                return;
 312
 313        if (part == 'e') {      /* email */
 314                strbuf_add(sb, msg + start, end - start);
 315                return;
 316        }
 317
 318        /* parse date */
 319        for (start = end + 1; start < len && isspace(msg[start]); start++)
 320                ; /* do nothing */
 321        if (start >= len)
 322                return;
 323        date = strtoul(msg + start, &ep, 10);
 324        if (msg + start == ep)
 325                return;
 326
 327        if (part == 't') {      /* date, UNIX timestamp */
 328                strbuf_add(sb, msg + start, ep - (msg + start));
 329                return;
 330        }
 331
 332        /* parse tz */
 333        for (start = ep - msg + 1; start < len && isspace(msg[start]); start++)
 334                ; /* do nothing */
 335        if (start + 1 < len) {
 336                tz = strtoul(msg + start + 1, NULL, 10);
 337                if (msg[start] == '-')
 338                        tz = -tz;
 339        }
 340
 341        switch (part) {
 342        case 'd':       /* date */
 343                strbuf_addstr(sb, show_date(date, tz, DATE_NORMAL));
 344                return;
 345        case 'D':       /* date, RFC2822 style */
 346                strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822));
 347                return;
 348        case 'r':       /* date, relative */
 349                strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE));
 350                return;
 351        case 'i':       /* date, ISO 8601 */
 352                strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601));
 353                return;
 354        }
 355}
 356
 357struct chunk {
 358        size_t off;
 359        size_t len;
 360};
 361
 362struct format_commit_context {
 363        const struct commit *commit;
 364
 365        /* These offsets are relative to the start of the commit message. */
 366        int commit_header_parsed;
 367        struct chunk subject;
 368        struct chunk author;
 369        struct chunk committer;
 370        struct chunk encoding;
 371        size_t body_off;
 372
 373        /* The following ones are relative to the result struct strbuf. */
 374        struct chunk abbrev_commit_hash;
 375        struct chunk abbrev_tree_hash;
 376        struct chunk abbrev_parent_hashes;
 377};
 378
 379static int add_again(struct strbuf *sb, struct chunk *chunk)
 380{
 381        if (chunk->len) {
 382                strbuf_adddup(sb, chunk->off, chunk->len);
 383                return 1;
 384        }
 385
 386        /*
 387         * We haven't seen this chunk before.  Our caller is surely
 388         * going to add it the hard way now.  Remember the most likely
 389         * start of the to-be-added chunk: the current end of the
 390         * struct strbuf.
 391         */
 392        chunk->off = sb->len;
 393        return 0;
 394}
 395
 396static void parse_commit_header(struct format_commit_context *context)
 397{
 398        const char *msg = context->commit->buffer;
 399        int i;
 400        enum { HEADER, SUBJECT, BODY } state;
 401
 402        for (i = 0, state = HEADER; msg[i] && state < BODY; i++) {
 403                int eol;
 404                for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
 405                        ; /* do nothing */
 406
 407                if (state == SUBJECT) {
 408                        context->subject.off = i;
 409                        context->subject.len = eol - i;
 410                        i = eol;
 411                }
 412                if (i == eol) {
 413                        state++;
 414                        /* strip empty lines */
 415                        while (msg[eol] == '\n' && msg[eol + 1] == '\n')
 416                                eol++;
 417                } else if (!prefixcmp(msg + i, "author ")) {
 418                        context->author.off = i + 7;
 419                        context->author.len = eol - i - 7;
 420                } else if (!prefixcmp(msg + i, "committer ")) {
 421                        context->committer.off = i + 10;
 422                        context->committer.len = eol - i - 10;
 423                } else if (!prefixcmp(msg + i, "encoding ")) {
 424                        context->encoding.off = i + 9;
 425                        context->encoding.len = eol - i - 9;
 426                }
 427                i = eol;
 428                if (!msg[i])
 429                        break;
 430        }
 431        context->body_off = i;
 432        context->commit_header_parsed = 1;
 433}
 434
 435static void format_commit_item(struct strbuf *sb, const char *placeholder,
 436                               void *context)
 437{
 438        struct format_commit_context *c = context;
 439        const struct commit *commit = c->commit;
 440        const char *msg = commit->buffer;
 441        struct commit_list *p;
 442
 443        /* these are independent of the commit */
 444        switch (placeholder[0]) {
 445        case 'C':
 446                switch (placeholder[3]) {
 447                case 'd':       /* red */
 448                        strbuf_addstr(sb, "\033[31m");
 449                        return;
 450                case 'e':       /* green */
 451                        strbuf_addstr(sb, "\033[32m");
 452                        return;
 453                case 'u':       /* blue */
 454                        strbuf_addstr(sb, "\033[34m");
 455                        return;
 456                case 's':       /* reset color */
 457                        strbuf_addstr(sb, "\033[m");
 458                        return;
 459                }
 460        case 'n':               /* newline */
 461                strbuf_addch(sb, '\n');
 462                return;
 463        }
 464
 465        /* these depend on the commit */
 466        if (!commit->object.parsed)
 467                parse_object(commit->object.sha1);
 468
 469        switch (placeholder[0]) {
 470        case 'H':               /* commit hash */
 471                strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
 472                return;
 473        case 'h':               /* abbreviated commit hash */
 474                if (add_again(sb, &c->abbrev_commit_hash))
 475                        return;
 476                strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
 477                                                     DEFAULT_ABBREV));
 478                c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
 479                return;
 480        case 'T':               /* tree hash */
 481                strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
 482                return;
 483        case 't':               /* abbreviated tree hash */
 484                if (add_again(sb, &c->abbrev_tree_hash))
 485                        return;
 486                strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
 487                                                     DEFAULT_ABBREV));
 488                c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
 489                return;
 490        case 'P':               /* parent hashes */
 491                for (p = commit->parents; p; p = p->next) {
 492                        if (p != commit->parents)
 493                                strbuf_addch(sb, ' ');
 494                        strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
 495                }
 496                return;
 497        case 'p':               /* abbreviated parent hashes */
 498                if (add_again(sb, &c->abbrev_parent_hashes))
 499                        return;
 500                for (p = commit->parents; p; p = p->next) {
 501                        if (p != commit->parents)
 502                                strbuf_addch(sb, ' ');
 503                        strbuf_addstr(sb, find_unique_abbrev(
 504                                        p->item->object.sha1, DEFAULT_ABBREV));
 505                }
 506                c->abbrev_parent_hashes.len = sb->len -
 507                                              c->abbrev_parent_hashes.off;
 508                return;
 509        case 'm':               /* left/right/bottom */
 510                strbuf_addch(sb, (commit->object.flags & BOUNDARY)
 511                                 ? '-'
 512                                 : (commit->object.flags & SYMMETRIC_LEFT)
 513                                 ? '<'
 514                                 : '>');
 515                return;
 516        }
 517
 518        /* For the rest we have to parse the commit header. */
 519        if (!c->commit_header_parsed)
 520                parse_commit_header(c);
 521
 522        switch (placeholder[0]) {
 523        case 's':
 524                strbuf_add(sb, msg + c->subject.off, c->subject.len);
 525                return;
 526        case 'a':
 527                format_person_part(sb, placeholder[1],
 528                                   msg + c->author.off, c->author.len);
 529                return;
 530        case 'c':
 531                format_person_part(sb, placeholder[1],
 532                                   msg + c->committer.off, c->committer.len);
 533                return;
 534        case 'e':
 535                strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
 536                return;
 537        case 'b':
 538                strbuf_addstr(sb, msg + c->body_off);
 539                return;
 540        }
 541}
 542
 543void format_commit_message(const struct commit *commit,
 544                           const void *format, struct strbuf *sb)
 545{
 546        const char *placeholders[] = {
 547                "H",            /* commit hash */
 548                "h",            /* abbreviated commit hash */
 549                "T",            /* tree hash */
 550                "t",            /* abbreviated tree hash */
 551                "P",            /* parent hashes */
 552                "p",            /* abbreviated parent hashes */
 553                "an",           /* author name */
 554                "ae",           /* author email */
 555                "ad",           /* author date */
 556                "aD",           /* author date, RFC2822 style */
 557                "ar",           /* author date, relative */
 558                "at",           /* author date, UNIX timestamp */
 559                "ai",           /* author date, ISO 8601 */
 560                "cn",           /* committer name */
 561                "ce",           /* committer email */
 562                "cd",           /* committer date */
 563                "cD",           /* committer date, RFC2822 style */
 564                "cr",           /* committer date, relative */
 565                "ct",           /* committer date, UNIX timestamp */
 566                "ci",           /* committer date, ISO 8601 */
 567                "e",            /* encoding */
 568                "s",            /* subject */
 569                "b",            /* body */
 570                "Cred",         /* red */
 571                "Cgreen",       /* green */
 572                "Cblue",        /* blue */
 573                "Creset",       /* reset color */
 574                "n",            /* newline */
 575                "m",            /* left/right/bottom */
 576                NULL
 577        };
 578        struct format_commit_context context;
 579
 580        memset(&context, 0, sizeof(context));
 581        context.commit = commit;
 582        strbuf_expand(sb, format, placeholders, format_commit_item, &context);
 583}
 584
 585static void pp_header(enum cmit_fmt fmt,
 586                      int abbrev,
 587                      enum date_mode dmode,
 588                      const char *encoding,
 589                      const struct commit *commit,
 590                      const char **msg_p,
 591                      struct strbuf *sb)
 592{
 593        int parents_shown = 0;
 594
 595        for (;;) {
 596                const char *line = *msg_p;
 597                int linelen = get_one_line(*msg_p);
 598
 599                if (!linelen)
 600                        return;
 601                *msg_p += linelen;
 602
 603                if (linelen == 1)
 604                        /* End of header */
 605                        return;
 606
 607                if (fmt == CMIT_FMT_RAW) {
 608                        strbuf_add(sb, line, linelen);
 609                        continue;
 610                }
 611
 612                if (!memcmp(line, "parent ", 7)) {
 613                        if (linelen != 48)
 614                                die("bad parent line in commit");
 615                        continue;
 616                }
 617
 618                if (!parents_shown) {
 619                        struct commit_list *parent;
 620                        int num;
 621                        for (parent = commit->parents, num = 0;
 622                             parent;
 623                             parent = parent->next, num++)
 624                                ;
 625                        /* with enough slop */
 626                        strbuf_grow(sb, num * 50 + 20);
 627                        add_merge_info(fmt, sb, commit, abbrev);
 628                        parents_shown = 1;
 629                }
 630
 631                /*
 632                 * MEDIUM == DEFAULT shows only author with dates.
 633                 * FULL shows both authors but not dates.
 634                 * FULLER shows both authors and dates.
 635                 */
 636                if (!memcmp(line, "author ", 7)) {
 637                        strbuf_grow(sb, linelen + 80);
 638                        add_user_info("Author", fmt, sb, line + 7, dmode, encoding);
 639                }
 640                if (!memcmp(line, "committer ", 10) &&
 641                    (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) {
 642                        strbuf_grow(sb, linelen + 80);
 643                        add_user_info("Commit", fmt, sb, line + 10, dmode, encoding);
 644                }
 645        }
 646}
 647
 648static void pp_title_line(enum cmit_fmt fmt,
 649                          const char **msg_p,
 650                          struct strbuf *sb,
 651                          const char *subject,
 652                          const char *after_subject,
 653                          const char *encoding,
 654                          int plain_non_ascii)
 655{
 656        struct strbuf title;
 657
 658        strbuf_init(&title, 80);
 659
 660        for (;;) {
 661                const char *line = *msg_p;
 662                int linelen = get_one_line(line);
 663
 664                *msg_p += linelen;
 665                if (!linelen || is_empty_line(line, &linelen))
 666                        break;
 667
 668                strbuf_grow(&title, linelen + 2);
 669                if (title.len) {
 670                        if (fmt == CMIT_FMT_EMAIL) {
 671                                strbuf_addch(&title, '\n');
 672                        }
 673                        strbuf_addch(&title, ' ');
 674                }
 675                strbuf_add(&title, line, linelen);
 676        }
 677
 678        strbuf_grow(sb, title.len + 1024);
 679        if (subject) {
 680                strbuf_addstr(sb, subject);
 681                add_rfc2047(sb, title.buf, title.len, encoding);
 682        } else {
 683                strbuf_addbuf(sb, &title);
 684        }
 685        strbuf_addch(sb, '\n');
 686
 687        if (plain_non_ascii) {
 688                const char *header_fmt =
 689                        "MIME-Version: 1.0\n"
 690                        "Content-Type: text/plain; charset=%s\n"
 691                        "Content-Transfer-Encoding: 8bit\n";
 692                strbuf_addf(sb, header_fmt, encoding);
 693        }
 694        if (after_subject) {
 695                strbuf_addstr(sb, after_subject);
 696        }
 697        if (fmt == CMIT_FMT_EMAIL) {
 698                strbuf_addch(sb, '\n');
 699        }
 700        strbuf_release(&title);
 701}
 702
 703static void pp_remainder(enum cmit_fmt fmt,
 704                         const char **msg_p,
 705                         struct strbuf *sb,
 706                         int indent)
 707{
 708        int first = 1;
 709        for (;;) {
 710                const char *line = *msg_p;
 711                int linelen = get_one_line(line);
 712                *msg_p += linelen;
 713
 714                if (!linelen)
 715                        break;
 716
 717                if (is_empty_line(line, &linelen)) {
 718                        if (first)
 719                                continue;
 720                        if (fmt == CMIT_FMT_SHORT)
 721                                break;
 722                }
 723                first = 0;
 724
 725                strbuf_grow(sb, linelen + indent + 20);
 726                if (indent) {
 727                        memset(sb->buf + sb->len, ' ', indent);
 728                        strbuf_setlen(sb, sb->len + indent);
 729                }
 730                strbuf_add(sb, line, linelen);
 731                strbuf_addch(sb, '\n');
 732        }
 733}
 734
 735void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
 736                                  struct strbuf *sb, int abbrev,
 737                                  const char *subject, const char *after_subject,
 738                                  enum date_mode dmode, int plain_non_ascii)
 739{
 740        unsigned long beginning_of_body;
 741        int indent = 4;
 742        const char *msg = commit->buffer;
 743        char *reencoded;
 744        const char *encoding;
 745
 746        if (fmt == CMIT_FMT_USERFORMAT) {
 747                format_commit_message(commit, user_format, sb);
 748                return;
 749        }
 750
 751        encoding = (git_log_output_encoding
 752                    ? git_log_output_encoding
 753                    : git_commit_encoding);
 754        if (!encoding)
 755                encoding = "utf-8";
 756        reencoded = logmsg_reencode(commit, encoding);
 757        if (reencoded) {
 758                msg = reencoded;
 759        }
 760
 761        if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
 762                indent = 0;
 763
 764        /* After-subject is used to pass in Content-Type: multipart
 765         * MIME header; in that case we do not have to do the
 766         * plaintext content type even if the commit message has
 767         * non 7-bit ASCII character.  Otherwise, check if we need
 768         * to say this is not a 7-bit ASCII.
 769         */
 770        if (fmt == CMIT_FMT_EMAIL && !after_subject) {
 771                int i, ch, in_body;
 772
 773                for (in_body = i = 0; (ch = msg[i]); i++) {
 774                        if (!in_body) {
 775                                /* author could be non 7-bit ASCII but
 776                                 * the log may be so; skip over the
 777                                 * header part first.
 778                                 */
 779                                if (ch == '\n' && msg[i+1] == '\n')
 780                                        in_body = 1;
 781                        }
 782                        else if (non_ascii(ch)) {
 783                                plain_non_ascii = 1;
 784                                break;
 785                        }
 786                }
 787        }
 788
 789        pp_header(fmt, abbrev, dmode, encoding, commit, &msg, sb);
 790        if (fmt != CMIT_FMT_ONELINE && !subject) {
 791                strbuf_addch(sb, '\n');
 792        }
 793
 794        /* Skip excess blank lines at the beginning of body, if any... */
 795        for (;;) {
 796                int linelen = get_one_line(msg);
 797                int ll = linelen;
 798                if (!linelen)
 799                        break;
 800                if (!is_empty_line(msg, &ll))
 801                        break;
 802                msg += linelen;
 803        }
 804
 805        /* These formats treat the title line specially. */
 806        if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
 807                pp_title_line(fmt, &msg, sb, subject,
 808                              after_subject, encoding, plain_non_ascii);
 809
 810        beginning_of_body = sb->len;
 811        if (fmt != CMIT_FMT_ONELINE)
 812                pp_remainder(fmt, &msg, sb, indent);
 813        strbuf_rtrim(sb);
 814
 815        /* Make sure there is an EOLN for the non-oneline case */
 816        if (fmt != CMIT_FMT_ONELINE)
 817                strbuf_addch(sb, '\n');
 818
 819        /*
 820         * The caller may append additional body text in e-mail
 821         * format.  Make sure we did not strip the blank line
 822         * between the header and the body.
 823         */
 824        if (fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
 825                strbuf_addch(sb, '\n');
 826        free(reencoded);
 827}