diff options
Diffstat (limited to 'pretty.c')
| -rw-r--r-- | pretty.c | 1102 |
1 files changed, 1102 insertions, 0 deletions
diff --git a/pretty.c b/pretty.c new file mode 100644 index 0000000000..d493cade26 --- /dev/null +++ b/pretty.c @@ -0,0 +1,1102 @@ +#include "cache.h" +#include "commit.h" +#include "utf8.h" +#include "diff.h" +#include "revision.h" +#include "string-list.h" +#include "mailmap.h" +#include "log-tree.h" +#include "notes.h" +#include "color.h" +#include "reflog-walk.h" + +static char *user_format; + +static void save_user_format(struct rev_info *rev, const char *cp, int is_tformat) +{ + free(user_format); + user_format = xstrdup(cp); + if (is_tformat) + rev->use_terminator = 1; + rev->commit_format = CMIT_FMT_USERFORMAT; +} + +void get_commit_format(const char *arg, struct rev_info *rev) +{ + int i; + static struct cmt_fmt_map { + const char *n; + size_t cmp_len; + enum cmit_fmt v; + } cmt_fmts[] = { + { "raw", 1, CMIT_FMT_RAW }, + { "medium", 1, CMIT_FMT_MEDIUM }, + { "short", 1, CMIT_FMT_SHORT }, + { "email", 1, CMIT_FMT_EMAIL }, + { "full", 5, CMIT_FMT_FULL }, + { "fuller", 5, CMIT_FMT_FULLER }, + { "oneline", 1, CMIT_FMT_ONELINE }, + }; + + rev->use_terminator = 0; + if (!arg || !*arg) { + rev->commit_format = CMIT_FMT_DEFAULT; + return; + } + if (!prefixcmp(arg, "format:") || !prefixcmp(arg, "tformat:")) { + save_user_format(rev, strchr(arg, ':') + 1, arg[0] == 't'); + return; + } + for (i = 0; i < ARRAY_SIZE(cmt_fmts); i++) { + if (!strncmp(arg, cmt_fmts[i].n, cmt_fmts[i].cmp_len) && + !strncmp(arg, cmt_fmts[i].n, strlen(arg))) { + if (cmt_fmts[i].v == CMIT_FMT_ONELINE) + rev->use_terminator = 1; + rev->commit_format = cmt_fmts[i].v; + return; + } + } + if (strchr(arg, '%')) { + save_user_format(rev, arg, 1); + return; + } + + die("invalid --pretty format: %s", arg); +} + +/* + * Generic support for pretty-printing the header + */ +static int get_one_line(const char *msg) +{ + int ret = 0; + + for (;;) { + char c = *msg++; + if (!c) + break; + ret++; + if (c == '\n') + break; + } + return ret; +} + +/* High bit set, or ISO-2022-INT */ +static int non_ascii(int ch) +{ + return !isascii(ch) || ch == '\033'; +} + +int has_non_ascii(const char *s) +{ + int ch; + if (!s) + return 0; + while ((ch = *s++) != '\0') { + if (non_ascii(ch)) + return 1; + } + return 0; +} + +static int is_rfc2047_special(char ch) +{ + return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_')); +} + +static void add_rfc2047(struct strbuf *sb, const char *line, int len, + const char *encoding) +{ + int i, last; + + for (i = 0; i < len; i++) { + int ch = line[i]; + if (non_ascii(ch)) + goto needquote; + if ((i + 1 < len) && (ch == '=' && line[i+1] == '?')) + goto needquote; + } + strbuf_add(sb, line, len); + return; + +needquote: + strbuf_grow(sb, len * 3 + strlen(encoding) + 100); + strbuf_addf(sb, "=?%s?q?", encoding); + for (i = last = 0; i < len; i++) { + unsigned ch = line[i] & 0xFF; + /* + * We encode ' ' using '=20' even though rfc2047 + * allows using '_' for readability. Unfortunately, + * many programs do not understand this and just + * leave the underscore in place. + */ + if (is_rfc2047_special(ch) || ch == ' ') { + strbuf_add(sb, line + last, i - last); + strbuf_addf(sb, "=%02X", ch); + last = i + 1; + } + } + strbuf_add(sb, line + last, len - last); + strbuf_addstr(sb, "?="); +} + +void pp_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb, + const char *line, enum date_mode dmode, + const char *encoding) +{ + char *date; + int namelen; + unsigned long time; + int tz; + + if (fmt == CMIT_FMT_ONELINE) + return; + date = strchr(line, '>'); + if (!date) + return; + namelen = ++date - line; + time = strtoul(date, &date, 10); + tz = strtol(date, NULL, 10); + + if (fmt == CMIT_FMT_EMAIL) { + char *name_tail = strchr(line, '<'); + int display_name_length; + if (!name_tail) + return; + while (line < name_tail && isspace(name_tail[-1])) + name_tail--; + display_name_length = name_tail - line; + strbuf_addstr(sb, "From: "); + add_rfc2047(sb, line, display_name_length, encoding); + strbuf_add(sb, name_tail, namelen - display_name_length); + strbuf_addch(sb, '\n'); + } else { + strbuf_addf(sb, "%s: %.*s%.*s\n", what, + (fmt == CMIT_FMT_FULLER) ? 4 : 0, + " ", namelen, line); + } + switch (fmt) { + case CMIT_FMT_MEDIUM: + strbuf_addf(sb, "Date: %s\n", show_date(time, tz, dmode)); + break; + case CMIT_FMT_EMAIL: + strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822)); + break; + case CMIT_FMT_FULLER: + strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, dmode)); + break; + default: + /* notin' */ + break; + } +} + +static int is_empty_line(const char *line, int *len_p) +{ + int len = *len_p; + while (len && isspace(line[len-1])) + len--; + *len_p = len; + return !len; +} + +static const char *skip_empty_lines(const char *msg) +{ + for (;;) { + int linelen = get_one_line(msg); + int ll = linelen; + if (!linelen) + break; + if (!is_empty_line(msg, &ll)) + break; + msg += linelen; + } + return msg; +} + +static void add_merge_info(enum cmit_fmt fmt, struct strbuf *sb, + const struct commit *commit, int abbrev) +{ + struct commit_list *parent = commit->parents; + + if ((fmt == CMIT_FMT_ONELINE) || (fmt == CMIT_FMT_EMAIL) || + !parent || !parent->next) + return; + + strbuf_addstr(sb, "Merge:"); + + while (parent) { + struct commit *p = parent->item; + const char *hex = NULL; + if (abbrev) + hex = find_unique_abbrev(p->object.sha1, abbrev); + if (!hex) + hex = sha1_to_hex(p->object.sha1); + parent = parent->next; + + strbuf_addf(sb, " %s", hex); + } + strbuf_addch(sb, '\n'); +} + +static char *get_header(const struct commit *commit, const char *key) +{ + int key_len = strlen(key); + const char *line = commit->buffer; + + for (;;) { + const char *eol = strchr(line, '\n'), *next; + + if (line == eol) + return NULL; + if (!eol) { + eol = line + strlen(line); + next = NULL; + } else + next = eol + 1; + if (eol - line > key_len && + !strncmp(line, key, key_len) && + line[key_len] == ' ') { + return xmemdupz(line + key_len + 1, eol - line - key_len - 1); + } + line = next; + } +} + +static char *replace_encoding_header(char *buf, const char *encoding) +{ + struct strbuf tmp = STRBUF_INIT; + size_t start, len; + char *cp = buf; + + /* guess if there is an encoding header before a \n\n */ + while (strncmp(cp, "encoding ", strlen("encoding "))) { + cp = strchr(cp, '\n'); + if (!cp || *++cp == '\n') + return buf; + } + start = cp - buf; + cp = strchr(cp, '\n'); + if (!cp) + return buf; /* should not happen but be defensive */ + len = cp + 1 - (buf + start); + + strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1); + if (is_encoding_utf8(encoding)) { + /* we have re-coded to UTF-8; drop the header */ + strbuf_remove(&tmp, start, len); + } else { + /* just replaces XXXX in 'encoding XXXX\n' */ + strbuf_splice(&tmp, start + strlen("encoding "), + len - strlen("encoding \n"), + encoding, strlen(encoding)); + } + return strbuf_detach(&tmp, NULL); +} + +static char *logmsg_reencode(const struct commit *commit, + const char *output_encoding) +{ + static const char *utf8 = "UTF-8"; + const char *use_encoding; + char *encoding; + char *out; + + if (!*output_encoding) + return NULL; + encoding = get_header(commit, "encoding"); + use_encoding = encoding ? encoding : utf8; + if (!strcmp(use_encoding, output_encoding)) + if (encoding) /* we'll strip encoding header later */ + out = xstrdup(commit->buffer); + else + return NULL; /* nothing to do */ + else + out = reencode_string(commit->buffer, + output_encoding, use_encoding); + if (out) + out = replace_encoding_header(out, output_encoding); + + free(encoding); + return out; +} + +static int mailmap_name(char *email, int email_len, char *name, int name_len) +{ + static struct string_list *mail_map; + if (!mail_map) { + mail_map = xcalloc(1, sizeof(*mail_map)); + read_mailmap(mail_map, NULL); + } + return mail_map->nr && map_user(mail_map, email, email_len, name, name_len); +} + +static size_t format_person_part(struct strbuf *sb, char part, + const char *msg, int len, enum date_mode dmode) +{ + /* currently all placeholders have same length */ + const int placeholder_len = 2; + int start, end, tz = 0; + unsigned long date = 0; + char *ep; + const char *name_start, *name_end, *mail_start, *mail_end, *msg_end = msg+len; + char person_name[1024]; + char person_mail[1024]; + + /* advance 'end' to point to email start delimiter */ + for (end = 0; end < len && msg[end] != '<'; end++) + ; /* do nothing */ + + /* + * When end points at the '<' that we found, it should have + * matching '>' later, which means 'end' must be strictly + * below len - 1. + */ + if (end >= len - 2) + goto skip; + + /* Seek for both name and email part */ + name_start = msg; + name_end = msg+end; + while (name_end > name_start && isspace(*(name_end-1))) + name_end--; + mail_start = msg+end+1; + mail_end = mail_start; + while (mail_end < msg_end && *mail_end != '>') + mail_end++; + if (mail_end == msg_end) + goto skip; + end = mail_end-msg; + + if (part == 'N' || part == 'E') { /* mailmap lookup */ + strlcpy(person_name, name_start, name_end-name_start+1); + strlcpy(person_mail, mail_start, mail_end-mail_start+1); + mailmap_name(person_mail, sizeof(person_mail), person_name, sizeof(person_name)); + name_start = person_name; + name_end = name_start + strlen(person_name); + mail_start = person_mail; + mail_end = mail_start + strlen(person_mail); + } + if (part == 'n' || part == 'N') { /* name */ + strbuf_add(sb, name_start, name_end-name_start); + return placeholder_len; + } + if (part == 'e' || part == 'E') { /* email */ + strbuf_add(sb, mail_start, mail_end-mail_start); + return placeholder_len; + } + + /* advance 'start' to point to date start delimiter */ + for (start = end + 1; start < len && isspace(msg[start]); start++) + ; /* do nothing */ + if (start >= len) + goto skip; + date = strtoul(msg + start, &ep, 10); + if (msg + start == ep) + goto skip; + + if (part == 't') { /* date, UNIX timestamp */ + strbuf_add(sb, msg + start, ep - (msg + start)); + return placeholder_len; + } + + /* parse tz */ + for (start = ep - msg + 1; start < len && isspace(msg[start]); start++) + ; /* do nothing */ + if (start + 1 < len) { + tz = strtoul(msg + start + 1, NULL, 10); + if (msg[start] == '-') + tz = -tz; + } + + switch (part) { + case 'd': /* date */ + strbuf_addstr(sb, show_date(date, tz, dmode)); + return placeholder_len; + case 'D': /* date, RFC2822 style */ + strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822)); + return placeholder_len; + case 'r': /* date, relative */ + strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE)); + return placeholder_len; + case 'i': /* date, ISO 8601 */ + strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601)); + return placeholder_len; + } + +skip: + /* + * bogus commit, 'sb' cannot be updated, but we still need to + * compute a valid return value. + */ + if (part == 'n' || part == 'e' || part == 't' || part == 'd' + || part == 'D' || part == 'r' || part == 'i') + return placeholder_len; + + return 0; /* unknown placeholder */ +} + +struct chunk { + size_t off; + size_t len; +}; + +struct format_commit_context { + const struct commit *commit; + const struct pretty_print_context *pretty_ctx; + unsigned commit_header_parsed:1; + unsigned commit_message_parsed:1; + size_t width, indent1, indent2; + + /* These offsets are relative to the start of the commit message. */ + struct chunk author; + struct chunk committer; + struct chunk encoding; + size_t message_off; + size_t subject_off; + size_t body_off; + + /* The following ones are relative to the result struct strbuf. */ + struct chunk abbrev_commit_hash; + struct chunk abbrev_tree_hash; + struct chunk abbrev_parent_hashes; + size_t wrap_start; +}; + +static int add_again(struct strbuf *sb, struct chunk *chunk) +{ + if (chunk->len) { + strbuf_adddup(sb, chunk->off, chunk->len); + return 1; + } + + /* + * We haven't seen this chunk before. Our caller is surely + * going to add it the hard way now. Remember the most likely + * start of the to-be-added chunk: the current end of the + * struct strbuf. + */ + chunk->off = sb->len; + return 0; +} + +static void parse_commit_header(struct format_commit_context *context) +{ + const char *msg = context->commit->buffer; + int i; + + for (i = 0; msg[i]; i++) { + int eol; + for (eol = i; msg[eol] && msg[eol] != '\n'; eol++) + ; /* do nothing */ + + if (i == eol) { + break; + } else if (!prefixcmp(msg + i, "author ")) { + context->author.off = i + 7; + context->author.len = eol - i - 7; + } else if (!prefixcmp(msg + i, "committer ")) { + context->committer.off = i + 10; + context->committer.len = eol - i - 10; + } else if (!prefixcmp(msg + i, "encoding ")) { + context->encoding.off = i + 9; + context->encoding.len = eol - i - 9; + } + i = eol; + } + context->message_off = i; + context->commit_header_parsed = 1; +} + +static int istitlechar(char c) +{ + return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || + (c >= '0' && c <= '9') || c == '.' || c == '_'; +} + +static void format_sanitized_subject(struct strbuf *sb, const char *msg) +{ + size_t trimlen; + size_t start_len = sb->len; + int space = 2; + + for (; *msg && *msg != '\n'; msg++) { + if (istitlechar(*msg)) { + if (space == 1) + strbuf_addch(sb, '-'); + space = 0; + strbuf_addch(sb, *msg); + if (*msg == '.') + while (*(msg+1) == '.') + msg++; + } else + space |= 1; + } + + /* trim any trailing '.' or '-' characters */ + trimlen = 0; + while (sb->len - trimlen > start_len && + (sb->buf[sb->len - 1 - trimlen] == '.' + || sb->buf[sb->len - 1 - trimlen] == '-')) + trimlen++; + strbuf_remove(sb, sb->len - trimlen, trimlen); +} + +const char *format_subject(struct strbuf *sb, const char *msg, + const char *line_separator) +{ + int first = 1; + + for (;;) { + const char *line = msg; + int linelen = get_one_line(line); + + msg += linelen; + if (!linelen || is_empty_line(line, &linelen)) + break; + + if (!sb) + continue; + strbuf_grow(sb, linelen + 2); + if (!first) + strbuf_addstr(sb, line_separator); + strbuf_add(sb, line, linelen); + first = 0; + } + return msg; +} + +static void parse_commit_message(struct format_commit_context *c) +{ + const char *msg = c->commit->buffer + c->message_off; + const char *start = c->commit->buffer; + + msg = skip_empty_lines(msg); + c->subject_off = msg - start; + + msg = format_subject(NULL, msg, NULL); + msg = skip_empty_lines(msg); + c->body_off = msg - start; + + c->commit_message_parsed = 1; +} + +static void format_decoration(struct strbuf *sb, const struct commit *commit) +{ + struct name_decoration *d; + const char *prefix = " ("; + + load_ref_decorations(DECORATE_SHORT_REFS); + d = lookup_decoration(&name_decoration, &commit->object); + while (d) { + strbuf_addstr(sb, prefix); + prefix = ", "; + strbuf_addstr(sb, d->name); + d = d->next; + } + if (prefix[0] == ',') + strbuf_addch(sb, ')'); +} + +static void strbuf_wrap(struct strbuf *sb, size_t pos, + size_t width, size_t indent1, size_t indent2) +{ + struct strbuf tmp = STRBUF_INIT; + + if (pos) + strbuf_add(&tmp, sb->buf, pos); + strbuf_add_wrapped_text(&tmp, sb->buf + pos, + (int) indent1, (int) indent2, (int) width); + strbuf_swap(&tmp, sb); + strbuf_release(&tmp); +} + +static void rewrap_message_tail(struct strbuf *sb, + struct format_commit_context *c, + size_t new_width, size_t new_indent1, + size_t new_indent2) +{ + if (c->width == new_width && c->indent1 == new_indent1 && + c->indent2 == new_indent2) + return; + if (c->wrap_start < sb->len) + strbuf_wrap(sb, c->wrap_start, c->width, c->indent1, c->indent2); + c->wrap_start = sb->len; + c->width = new_width; + c->indent1 = new_indent1; + c->indent2 = new_indent2; +} + +static size_t format_commit_one(struct strbuf *sb, const char *placeholder, + void *context) +{ + struct format_commit_context *c = context; + const struct commit *commit = c->commit; + const char *msg = commit->buffer; + struct commit_list *p; + int h1, h2; + + /* these are independent of the commit */ + switch (placeholder[0]) { + case 'C': + if (placeholder[1] == '(') { + const char *end = strchr(placeholder + 2, ')'); + char color[COLOR_MAXLEN]; + if (!end) + return 0; + color_parse_mem(placeholder + 2, + end - (placeholder + 2), + "--pretty format", color); + strbuf_addstr(sb, color); + return end - placeholder + 1; + } + if (!prefixcmp(placeholder + 1, "red")) { + strbuf_addstr(sb, GIT_COLOR_RED); + return 4; + } else if (!prefixcmp(placeholder + 1, "green")) { + strbuf_addstr(sb, GIT_COLOR_GREEN); + return 6; + } else if (!prefixcmp(placeholder + 1, "blue")) { + strbuf_addstr(sb, GIT_COLOR_BLUE); + return 5; + } else if (!prefixcmp(placeholder + 1, "reset")) { + strbuf_addstr(sb, GIT_COLOR_RESET); + return 6; + } else + return 0; + case 'n': /* newline */ + strbuf_addch(sb, '\n'); + return 1; + case 'x': + /* %x00 == NUL, %x0a == LF, etc. */ + if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) && + h1 <= 16 && + 0 <= (h2 = hexval_table[0xff & placeholder[2]]) && + h2 <= 16) { + strbuf_addch(sb, (h1<<4)|h2); + return 3; + } else + return 0; + case 'w': + if (placeholder[1] == '(') { + unsigned long width = 0, indent1 = 0, indent2 = 0; + char *next; + const char *start = placeholder + 2; + const char *end = strchr(start, ')'); + if (!end) + return 0; + if (end > start) { + width = strtoul(start, &next, 10); + if (*next == ',') { + indent1 = strtoul(next + 1, &next, 10); + if (*next == ',') { + indent2 = strtoul(next + 1, + &next, 10); + } + } + if (*next != ')') + return 0; + } + rewrap_message_tail(sb, c, width, indent1, indent2); + return end - placeholder + 1; + } else + return 0; + } + + /* these depend on the commit */ + if (!commit->object.parsed) + parse_object(commit->object.sha1); + + switch (placeholder[0]) { + case 'H': /* commit hash */ + strbuf_addstr(sb, sha1_to_hex(commit->object.sha1)); + return 1; + case 'h': /* abbreviated commit hash */ + if (add_again(sb, &c->abbrev_commit_hash)) + return 1; + strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1, + DEFAULT_ABBREV)); + c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off; + return 1; + case 'T': /* tree hash */ + strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1)); + return 1; + case 't': /* abbreviated tree hash */ + if (add_again(sb, &c->abbrev_tree_hash)) + return 1; + strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1, + DEFAULT_ABBREV)); + c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off; + return 1; + case 'P': /* parent hashes */ + for (p = commit->parents; p; p = p->next) { + if (p != commit->parents) + strbuf_addch(sb, ' '); + strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1)); + } + return 1; + case 'p': /* abbreviated parent hashes */ + if (add_again(sb, &c->abbrev_parent_hashes)) + return 1; + for (p = commit->parents; p; p = p->next) { + if (p != commit->parents) + strbuf_addch(sb, ' '); + strbuf_addstr(sb, find_unique_abbrev( + p->item->object.sha1, DEFAULT_ABBREV)); + } + c->abbrev_parent_hashes.len = sb->len - + c->abbrev_parent_hashes.off; + return 1; + case 'm': /* left/right/bottom */ + strbuf_addch(sb, (commit->object.flags & BOUNDARY) + ? '-' + : (commit->object.flags & SYMMETRIC_LEFT) + ? '<' + : '>'); + return 1; + case 'd': + format_decoration(sb, commit); + return 1; + case 'g': /* reflog info */ + switch(placeholder[1]) { + case 'd': /* reflog selector */ + case 'D': + if (c->pretty_ctx->reflog_info) + get_reflog_selector(sb, + c->pretty_ctx->reflog_info, + c->pretty_ctx->date_mode, + (placeholder[1] == 'd')); + return 2; + case 's': /* reflog message */ + if (c->pretty_ctx->reflog_info) + get_reflog_message(sb, c->pretty_ctx->reflog_info); + return 2; + } + return 0; /* unknown %g placeholder */ + case 'N': + get_commit_notes(commit, sb, git_log_output_encoding ? + git_log_output_encoding : git_commit_encoding, 0); + return 1; + } + + /* For the rest we have to parse the commit header. */ + if (!c->commit_header_parsed) + parse_commit_header(c); + + switch (placeholder[0]) { + case 'a': /* author ... */ + return format_person_part(sb, placeholder[1], + msg + c->author.off, c->author.len, + c->pretty_ctx->date_mode); + case 'c': /* committer ... */ + return format_person_part(sb, placeholder[1], + msg + c->committer.off, c->committer.len, + c->pretty_ctx->date_mode); + case 'e': /* encoding */ + strbuf_add(sb, msg + c->encoding.off, c->encoding.len); + return 1; + } + + /* Now we need to parse the commit message. */ + if (!c->commit_message_parsed) + parse_commit_message(c); + + switch (placeholder[0]) { + case 's': /* subject */ + format_subject(sb, msg + c->subject_off, " "); + return 1; + case 'f': /* sanitized subject */ + format_sanitized_subject(sb, msg + c->subject_off); + return 1; + case 'b': /* body */ + strbuf_addstr(sb, msg + c->body_off); + return 1; + } + return 0; /* unknown placeholder */ +} + +static size_t format_commit_item(struct strbuf *sb, const char *placeholder, + void *context) +{ + int consumed; + size_t orig_len; + enum { + NO_MAGIC, + ADD_LF_BEFORE_NON_EMPTY, + DEL_LF_BEFORE_EMPTY, + } magic = NO_MAGIC; + + switch (placeholder[0]) { + case '-': + magic = DEL_LF_BEFORE_EMPTY; + break; + case '+': + magic = ADD_LF_BEFORE_NON_EMPTY; + break; + default: + break; + } + if (magic != NO_MAGIC) + placeholder++; + + orig_len = sb->len; + consumed = format_commit_one(sb, placeholder, context); + if (magic == NO_MAGIC) + return consumed; + + if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) { + while (sb->len && sb->buf[sb->len - 1] == '\n') + strbuf_setlen(sb, sb->len - 1); + } else if ((orig_len != sb->len) && magic == ADD_LF_BEFORE_NON_EMPTY) { + strbuf_insert(sb, orig_len, "\n", 1); + } + return consumed + 1; +} + +void format_commit_message(const struct commit *commit, + const char *format, struct strbuf *sb, + const struct pretty_print_context *pretty_ctx) +{ + struct format_commit_context context; + + memset(&context, 0, sizeof(context)); + context.commit = commit; + context.pretty_ctx = pretty_ctx; + context.wrap_start = sb->len; + strbuf_expand(sb, format, format_commit_item, &context); + rewrap_message_tail(sb, &context, 0, 0, 0); +} + +static void pp_header(enum cmit_fmt fmt, + int abbrev, + enum date_mode dmode, + const char *encoding, + const struct commit *commit, + const char **msg_p, + struct strbuf *sb) +{ + int parents_shown = 0; + + for (;;) { + const char *line = *msg_p; + int linelen = get_one_line(*msg_p); + + if (!linelen) + return; + *msg_p += linelen; + + if (linelen == 1) + /* End of header */ + return; + + if (fmt == CMIT_FMT_RAW) { + strbuf_add(sb, line, linelen); + continue; + } + + if (!memcmp(line, "parent ", 7)) { + if (linelen != 48) + die("bad parent line in commit"); + continue; + } + + if (!parents_shown) { + struct commit_list *parent; + int num; + for (parent = commit->parents, num = 0; + parent; + parent = parent->next, num++) + ; + /* with enough slop */ + strbuf_grow(sb, num * 50 + 20); + add_merge_info(fmt, sb, commit, abbrev); + parents_shown = 1; + } + + /* + * MEDIUM == DEFAULT shows only author with dates. + * FULL shows both authors but not dates. + * FULLER shows both authors and dates. + */ + if (!memcmp(line, "author ", 7)) { + strbuf_grow(sb, linelen + 80); + pp_user_info("Author", fmt, sb, line + 7, dmode, encoding); + } + if (!memcmp(line, "committer ", 10) && + (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) { + strbuf_grow(sb, linelen + 80); + pp_user_info("Commit", fmt, sb, line + 10, dmode, encoding); + } + } +} + +void pp_title_line(enum cmit_fmt fmt, + const char **msg_p, + struct strbuf *sb, + const char *subject, + const char *after_subject, + const char *encoding, + int need_8bit_cte) +{ + const char *line_separator = (fmt == CMIT_FMT_EMAIL) ? "\n " : " "; + struct strbuf title; + + strbuf_init(&title, 80); + *msg_p = format_subject(&title, *msg_p, line_separator); + + strbuf_grow(sb, title.len + 1024); + if (subject) { + strbuf_addstr(sb, subject); + add_rfc2047(sb, title.buf, title.len, encoding); + } else { + strbuf_addbuf(sb, &title); + } + strbuf_addch(sb, '\n'); + + if (need_8bit_cte > 0) { + const char *header_fmt = + "MIME-Version: 1.0\n" + "Content-Type: text/plain; charset=%s\n" + "Content-Transfer-Encoding: 8bit\n"; + strbuf_addf(sb, header_fmt, encoding); + } + if (after_subject) { + strbuf_addstr(sb, after_subject); + } + if (fmt == CMIT_FMT_EMAIL) { + strbuf_addch(sb, '\n'); + } + strbuf_release(&title); +} + +void pp_remainder(enum cmit_fmt fmt, + const char **msg_p, + struct strbuf *sb, + int indent) +{ + int first = 1; + for (;;) { + const char *line = *msg_p; + int linelen = get_one_line(line); + *msg_p += linelen; + + if (!linelen) + break; + + if (is_empty_line(line, &linelen)) { + if (first) + continue; + if (fmt == CMIT_FMT_SHORT) + break; + } + first = 0; + + strbuf_grow(sb, linelen + indent + 20); + if (indent) { + memset(sb->buf + sb->len, ' ', indent); + strbuf_setlen(sb, sb->len + indent); + } + strbuf_add(sb, line, linelen); + strbuf_addch(sb, '\n'); + } +} + +char *reencode_commit_message(const struct commit *commit, const char **encoding_p) +{ + const char *encoding; + + encoding = (git_log_output_encoding + ? git_log_output_encoding + : git_commit_encoding); + if (!encoding) + encoding = "UTF-8"; + if (encoding_p) + *encoding_p = encoding; + return logmsg_reencode(commit, encoding); +} + +void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit, + struct strbuf *sb, + const struct pretty_print_context *context) +{ + unsigned long beginning_of_body; + int indent = 4; + const char *msg = commit->buffer; + char *reencoded; + const char *encoding; + int need_8bit_cte = context->need_8bit_cte; + + if (fmt == CMIT_FMT_USERFORMAT) { + format_commit_message(commit, user_format, sb, context); + return; + } + + reencoded = reencode_commit_message(commit, &encoding); + if (reencoded) { + msg = reencoded; + } + + if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL) + indent = 0; + + /* + * We need to check and emit Content-type: to mark it + * as 8-bit if we haven't done so. + */ + if (fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) { + int i, ch, in_body; + + for (in_body = i = 0; (ch = msg[i]); i++) { + if (!in_body) { + /* author could be non 7-bit ASCII but + * the log may be so; skip over the + * header part first. + */ + if (ch == '\n' && msg[i+1] == '\n') + in_body = 1; + } + else if (non_ascii(ch)) { + need_8bit_cte = 1; + break; + } + } + } + + pp_header(fmt, context->abbrev, context->date_mode, encoding, + commit, &msg, sb); + if (fmt != CMIT_FMT_ONELINE && !context->subject) { + strbuf_addch(sb, '\n'); + } + + /* Skip excess blank lines at the beginning of body, if any... */ + msg = skip_empty_lines(msg); + + /* These formats treat the title line specially. */ + if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL) + pp_title_line(fmt, &msg, sb, context->subject, + context->after_subject, encoding, need_8bit_cte); + + beginning_of_body = sb->len; + if (fmt != CMIT_FMT_ONELINE) + pp_remainder(fmt, &msg, sb, indent); + strbuf_rtrim(sb); + + /* Make sure there is an EOLN for the non-oneline case */ + if (fmt != CMIT_FMT_ONELINE) + strbuf_addch(sb, '\n'); + + /* + * The caller may append additional body text in e-mail + * format. Make sure we did not strip the blank line + * between the header and the body. + */ + if (fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body) + strbuf_addch(sb, '\n'); + + if (context->show_notes) + get_commit_notes(commit, sb, encoding, + NOTES_SHOW_HEADER | NOTES_INDENT); + + free(reencoded); +} |