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-rw-r--r--pretty.c1779
1 files changed, 1779 insertions, 0 deletions
diff --git a/pretty.c b/pretty.c
new file mode 100644
index 0000000000..3c43db558a
--- /dev/null
+++ b/pretty.c
@@ -0,0 +1,1779 @@
+#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"
+#include "gpg-interface.h"
+
+static char *user_format;
+static struct cmt_fmt_map {
+ const char *name;
+ enum cmit_fmt format;
+ int is_tformat;
+ int is_alias;
+ const char *user_format;
+} *commit_formats;
+static size_t builtin_formats_len;
+static size_t commit_formats_len;
+static size_t commit_formats_alloc;
+static struct cmt_fmt_map *find_commit_format(const char *sought);
+
+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;
+}
+
+static int git_pretty_formats_config(const char *var, const char *value, void *cb)
+{
+ struct cmt_fmt_map *commit_format = NULL;
+ const char *name;
+ const char *fmt;
+ int i;
+
+ if (!starts_with(var, "pretty."))
+ return 0;
+
+ name = var + strlen("pretty.");
+ for (i = 0; i < builtin_formats_len; i++) {
+ if (!strcmp(commit_formats[i].name, name))
+ return 0;
+ }
+
+ for (i = builtin_formats_len; i < commit_formats_len; i++) {
+ if (!strcmp(commit_formats[i].name, name)) {
+ commit_format = &commit_formats[i];
+ break;
+ }
+ }
+
+ if (!commit_format) {
+ ALLOC_GROW(commit_formats, commit_formats_len+1,
+ commit_formats_alloc);
+ commit_format = &commit_formats[commit_formats_len];
+ memset(commit_format, 0, sizeof(*commit_format));
+ commit_formats_len++;
+ }
+
+ commit_format->name = xstrdup(name);
+ commit_format->format = CMIT_FMT_USERFORMAT;
+ git_config_string(&fmt, var, value);
+ if (starts_with(fmt, "format:") || starts_with(fmt, "tformat:")) {
+ commit_format->is_tformat = fmt[0] == 't';
+ fmt = strchr(fmt, ':') + 1;
+ } else if (strchr(fmt, '%'))
+ commit_format->is_tformat = 1;
+ else
+ commit_format->is_alias = 1;
+ commit_format->user_format = fmt;
+
+ return 0;
+}
+
+static void setup_commit_formats(void)
+{
+ struct cmt_fmt_map builtin_formats[] = {
+ { "raw", CMIT_FMT_RAW, 0 },
+ { "medium", CMIT_FMT_MEDIUM, 0 },
+ { "short", CMIT_FMT_SHORT, 0 },
+ { "email", CMIT_FMT_EMAIL, 0 },
+ { "fuller", CMIT_FMT_FULLER, 0 },
+ { "full", CMIT_FMT_FULL, 0 },
+ { "oneline", CMIT_FMT_ONELINE, 1 }
+ };
+ commit_formats_len = ARRAY_SIZE(builtin_formats);
+ builtin_formats_len = commit_formats_len;
+ ALLOC_GROW(commit_formats, commit_formats_len, commit_formats_alloc);
+ memcpy(commit_formats, builtin_formats,
+ sizeof(*builtin_formats)*ARRAY_SIZE(builtin_formats));
+
+ git_config(git_pretty_formats_config, NULL);
+}
+
+static struct cmt_fmt_map *find_commit_format_recursive(const char *sought,
+ const char *original,
+ int num_redirections)
+{
+ struct cmt_fmt_map *found = NULL;
+ size_t found_match_len = 0;
+ int i;
+
+ if (num_redirections >= commit_formats_len)
+ die("invalid --pretty format: "
+ "'%s' references an alias which points to itself",
+ original);
+
+ for (i = 0; i < commit_formats_len; i++) {
+ size_t match_len;
+
+ if (!starts_with(commit_formats[i].name, sought))
+ continue;
+
+ match_len = strlen(commit_formats[i].name);
+ if (found == NULL || found_match_len > match_len) {
+ found = &commit_formats[i];
+ found_match_len = match_len;
+ }
+ }
+
+ if (found && found->is_alias) {
+ found = find_commit_format_recursive(found->user_format,
+ original,
+ num_redirections+1);
+ }
+
+ return found;
+}
+
+static struct cmt_fmt_map *find_commit_format(const char *sought)
+{
+ if (!commit_formats)
+ setup_commit_formats();
+
+ return find_commit_format_recursive(sought, sought, 0);
+}
+
+void get_commit_format(const char *arg, struct rev_info *rev)
+{
+ struct cmt_fmt_map *commit_format;
+
+ rev->use_terminator = 0;
+ if (!arg || !*arg) {
+ rev->commit_format = CMIT_FMT_DEFAULT;
+ return;
+ }
+ if (starts_with(arg, "format:") || starts_with(arg, "tformat:")) {
+ save_user_format(rev, strchr(arg, ':') + 1, arg[0] == 't');
+ return;
+ }
+
+ if (strchr(arg, '%')) {
+ save_user_format(rev, arg, 1);
+ return;
+ }
+
+ commit_format = find_commit_format(arg);
+ if (!commit_format)
+ die("invalid --pretty format: %s", arg);
+
+ rev->commit_format = commit_format->format;
+ rev->use_terminator = commit_format->is_tformat;
+ if (commit_format->format == CMIT_FMT_USERFORMAT) {
+ save_user_format(rev, commit_format->user_format,
+ commit_format->is_tformat);
+ }
+}
+
+/*
+ * 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_rfc822_special(char ch)
+{
+ switch (ch) {
+ case '(':
+ case ')':
+ case '<':
+ case '>':
+ case '[':
+ case ']':
+ case ':':
+ case ';':
+ case '@':
+ case ',':
+ case '.':
+ case '"':
+ case '\\':
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static int needs_rfc822_quoting(const char *s, int len)
+{
+ int i;
+ for (i = 0; i < len; i++)
+ if (is_rfc822_special(s[i]))
+ return 1;
+ return 0;
+}
+
+static int last_line_length(struct strbuf *sb)
+{
+ int i;
+
+ /* How many bytes are already used on the last line? */
+ for (i = sb->len - 1; i >= 0; i--)
+ if (sb->buf[i] == '\n')
+ break;
+ return sb->len - (i + 1);
+}
+
+static void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
+{
+ int i;
+
+ /* just a guess, we may have to also backslash-quote */
+ strbuf_grow(out, len + 2);
+
+ strbuf_addch(out, '"');
+ for (i = 0; i < len; i++) {
+ switch (s[i]) {
+ case '"':
+ case '\\':
+ strbuf_addch(out, '\\');
+ /* fall through */
+ default:
+ strbuf_addch(out, s[i]);
+ }
+ }
+ strbuf_addch(out, '"');
+}
+
+enum rfc2047_type {
+ RFC2047_SUBJECT,
+ RFC2047_ADDRESS,
+};
+
+static int is_rfc2047_special(char ch, enum rfc2047_type type)
+{
+ /*
+ * rfc2047, section 4.2:
+ *
+ * 8-bit values which correspond to printable ASCII characters other
+ * than "=", "?", and "_" (underscore), MAY be represented as those
+ * characters. (But see section 5 for restrictions.) In
+ * particular, SPACE and TAB MUST NOT be represented as themselves
+ * within encoded words.
+ */
+
+ /*
+ * rule out non-ASCII characters and non-printable characters (the
+ * non-ASCII check should be redundant as isprint() is not localized
+ * and only knows about ASCII, but be defensive about that)
+ */
+ if (non_ascii(ch) || !isprint(ch))
+ return 1;
+
+ /*
+ * rule out special printable characters (' ' should be the only
+ * whitespace character considered printable, but be defensive and use
+ * isspace())
+ */
+ if (isspace(ch) || ch == '=' || ch == '?' || ch == '_')
+ return 1;
+
+ /*
+ * rfc2047, section 5.3:
+ *
+ * As a replacement for a 'word' entity within a 'phrase', for example,
+ * one that precedes an address in a From, To, or Cc header. The ABNF
+ * definition for 'phrase' from RFC 822 thus becomes:
+ *
+ * phrase = 1*( encoded-word / word )
+ *
+ * In this case the set of characters that may be used in a "Q"-encoded
+ * 'encoded-word' is restricted to: <upper and lower case ASCII
+ * letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_"
+ * (underscore, ASCII 95.)>. An 'encoded-word' that appears within a
+ * 'phrase' MUST be separated from any adjacent 'word', 'text' or
+ * 'special' by 'linear-white-space'.
+ */
+
+ if (type != RFC2047_ADDRESS)
+ return 0;
+
+ /* '=' and '_' are special cases and have been checked above */
+ return !(isalnum(ch) || ch == '!' || ch == '*' || ch == '+' || ch == '-' || ch == '/');
+}
+
+static int needs_rfc2047_encoding(const char *line, int len,
+ enum rfc2047_type type)
+{
+ int i;
+
+ for (i = 0; i < len; i++) {
+ int ch = line[i];
+ if (non_ascii(ch) || ch == '\n')
+ return 1;
+ if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
+ return 1;
+ }
+
+ return 0;
+}
+
+static void add_rfc2047(struct strbuf *sb, const char *line, size_t len,
+ const char *encoding, enum rfc2047_type type)
+{
+ static const int max_encoded_length = 76; /* per rfc2047 */
+ int i;
+ int line_len = last_line_length(sb);
+
+ strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
+ strbuf_addf(sb, "=?%s?q?", encoding);
+ line_len += strlen(encoding) + 5; /* 5 for =??q? */
+
+ while (len) {
+ /*
+ * RFC 2047, section 5 (3):
+ *
+ * Each 'encoded-word' MUST represent an integral number of
+ * characters. A multi-octet character may not be split across
+ * adjacent 'encoded- word's.
+ */
+ const unsigned char *p = (const unsigned char *)line;
+ int chrlen = mbs_chrlen(&line, &len, encoding);
+ int is_special = (chrlen > 1) || is_rfc2047_special(*p, type);
+
+ /* "=%02X" * chrlen, or the byte itself */
+ const char *encoded_fmt = is_special ? "=%02X" : "%c";
+ int encoded_len = is_special ? 3 * chrlen : 1;
+
+ /*
+ * According to RFC 2047, we could encode the special character
+ * ' ' (space) with '_' (underscore) for readability. But many
+ * programs do not understand this and just leave the
+ * underscore in place. Thus, we do nothing special here, which
+ * causes ' ' to be encoded as '=20', avoiding this problem.
+ */
+
+ if (line_len + encoded_len + 2 > max_encoded_length) {
+ /* It won't fit with trailing "?=" --- break the line */
+ strbuf_addf(sb, "?=\n =?%s?q?", encoding);
+ line_len = strlen(encoding) + 5 + 1; /* =??q? plus SP */
+ }
+
+ for (i = 0; i < chrlen; i++)
+ strbuf_addf(sb, encoded_fmt, p[i]);
+ line_len += encoded_len;
+ }
+ strbuf_addstr(sb, "?=");
+}
+
+static const char *show_ident_date(const struct ident_split *ident,
+ enum date_mode mode)
+{
+ unsigned long date = 0;
+ long tz = 0;
+
+ if (ident->date_begin && ident->date_end)
+ date = strtoul(ident->date_begin, NULL, 10);
+ if (date_overflows(date))
+ date = 0;
+ else {
+ if (ident->tz_begin && ident->tz_end)
+ tz = strtol(ident->tz_begin, NULL, 10);
+ if (tz >= INT_MAX || tz <= INT_MIN)
+ tz = 0;
+ }
+ return show_date(date, tz, mode);
+}
+
+void pp_user_info(struct pretty_print_context *pp,
+ const char *what, struct strbuf *sb,
+ const char *line, const char *encoding)
+{
+ struct ident_split ident;
+ char *line_end;
+ const char *mailbuf, *namebuf;
+ size_t namelen, maillen;
+ int max_length = 78; /* per rfc2822 */
+
+ if (pp->fmt == CMIT_FMT_ONELINE)
+ return;
+
+ line_end = strchrnul(line, '\n');
+ if (split_ident_line(&ident, line, line_end - line))
+ return;
+
+ mailbuf = ident.mail_begin;
+ maillen = ident.mail_end - ident.mail_begin;
+ namebuf = ident.name_begin;
+ namelen = ident.name_end - ident.name_begin;
+
+ if (pp->mailmap)
+ map_user(pp->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
+
+ if (pp->fmt == CMIT_FMT_EMAIL) {
+ if (pp->from_ident && ident_cmp(pp->from_ident, &ident)) {
+ struct strbuf buf = STRBUF_INIT;
+
+ strbuf_addstr(&buf, "From: ");
+ strbuf_add(&buf, namebuf, namelen);
+ strbuf_addstr(&buf, " <");
+ strbuf_add(&buf, mailbuf, maillen);
+ strbuf_addstr(&buf, ">\n");
+ string_list_append(&pp->in_body_headers,
+ strbuf_detach(&buf, NULL));
+
+ mailbuf = pp->from_ident->mail_begin;
+ maillen = pp->from_ident->mail_end - mailbuf;
+ namebuf = pp->from_ident->name_begin;
+ namelen = pp->from_ident->name_end - namebuf;
+ }
+
+ strbuf_addstr(sb, "From: ");
+ if (needs_rfc2047_encoding(namebuf, namelen, RFC2047_ADDRESS)) {
+ add_rfc2047(sb, namebuf, namelen,
+ encoding, RFC2047_ADDRESS);
+ max_length = 76; /* per rfc2047 */
+ } else if (needs_rfc822_quoting(namebuf, namelen)) {
+ struct strbuf quoted = STRBUF_INIT;
+ add_rfc822_quoted(&quoted, namebuf, namelen);
+ strbuf_add_wrapped_bytes(sb, quoted.buf, quoted.len,
+ -6, 1, max_length);
+ strbuf_release(&quoted);
+ } else {
+ strbuf_add_wrapped_bytes(sb, namebuf, namelen,
+ -6, 1, max_length);
+ }
+
+ if (max_length <
+ last_line_length(sb) + strlen(" <") + maillen + strlen(">"))
+ strbuf_addch(sb, '\n');
+ strbuf_addf(sb, " <%.*s>\n", (int)maillen, mailbuf);
+ } else {
+ strbuf_addf(sb, "%s: %.*s%.*s <%.*s>\n", what,
+ (pp->fmt == CMIT_FMT_FULLER) ? 4 : 0, " ",
+ (int)namelen, namebuf, (int)maillen, mailbuf);
+ }
+
+ switch (pp->fmt) {
+ case CMIT_FMT_MEDIUM:
+ strbuf_addf(sb, "Date: %s\n",
+ show_ident_date(&ident, pp->date_mode));
+ break;
+ case CMIT_FMT_EMAIL:
+ strbuf_addf(sb, "Date: %s\n",
+ show_ident_date(&ident, DATE_RFC2822));
+ break;
+ case CMIT_FMT_FULLER:
+ strbuf_addf(sb, "%sDate: %s\n", what,
+ show_ident_date(&ident, pp->date_mode));
+ 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(const struct pretty_print_context *pp,
+ struct strbuf *sb, const struct commit *commit)
+{
+ struct commit_list *parent = commit->parents;
+
+ if ((pp->fmt == CMIT_FMT_ONELINE) || (pp->fmt == CMIT_FMT_EMAIL) ||
+ !parent || !parent->next)
+ return;
+
+ strbuf_addstr(sb, "Merge:");
+
+ while (parent) {
+ struct commit *p = parent->item;
+ const char *hex = NULL;
+ if (pp->abbrev)
+ hex = find_unique_abbrev(p->object.sha1, pp->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 *msg,
+ const char *key)
+{
+ int key_len = strlen(key);
+ const char *line = msg;
+
+ while (line) {
+ const char *eol = strchrnul(line, '\n'), *next;
+
+ if (line == eol)
+ return NULL;
+ if (!*eol) {
+ warning("malformed commit (header is missing newline): %s",
+ sha1_to_hex(commit->object.sha1));
+ 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;
+ }
+ return NULL;
+}
+
+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);
+}
+
+char *logmsg_reencode(const struct commit *commit,
+ char **commit_encoding,
+ const char *output_encoding)
+{
+ static const char *utf8 = "UTF-8";
+ const char *use_encoding;
+ char *encoding;
+ char *msg = commit->buffer;
+ char *out;
+
+ if (!msg) {
+ enum object_type type;
+ unsigned long size;
+
+ msg = read_sha1_file(commit->object.sha1, &type, &size);
+ if (!msg)
+ die("Cannot read commit object %s",
+ sha1_to_hex(commit->object.sha1));
+ if (type != OBJ_COMMIT)
+ die("Expected commit for '%s', got %s",
+ sha1_to_hex(commit->object.sha1), typename(type));
+ }
+
+ if (!output_encoding || !*output_encoding) {
+ if (commit_encoding)
+ *commit_encoding =
+ get_header(commit, msg, "encoding");
+ return msg;
+ }
+ encoding = get_header(commit, msg, "encoding");
+ if (commit_encoding)
+ *commit_encoding = encoding;
+ use_encoding = encoding ? encoding : utf8;
+ if (same_encoding(use_encoding, output_encoding)) {
+ /*
+ * No encoding work to be done. If we have no encoding header
+ * at all, then there's nothing to do, and we can return the
+ * message verbatim (whether newly allocated or not).
+ */
+ if (!encoding)
+ return msg;
+
+ /*
+ * Otherwise, we still want to munge the encoding header in the
+ * result, which will be done by modifying the buffer. If we
+ * are using a fresh copy, we can reuse it. But if we are using
+ * the cached copy from commit->buffer, we need to duplicate it
+ * to avoid munging commit->buffer.
+ */
+ out = msg;
+ if (out == commit->buffer)
+ out = xstrdup(out);
+ }
+ else {
+ /*
+ * There's actual encoding work to do. Do the reencoding, which
+ * still leaves the header to be replaced in the next step. At
+ * this point, we are done with msg. If we allocated a fresh
+ * copy, we can free it.
+ */
+ out = reencode_string(msg, output_encoding, use_encoding);
+ if (out && msg != commit->buffer)
+ free(msg);
+ }
+
+ /*
+ * This replacement actually consumes the buffer we hand it, so we do
+ * not have to worry about freeing the old "out" here.
+ */
+ if (out)
+ out = replace_encoding_header(out, output_encoding);
+
+ if (!commit_encoding)
+ free(encoding);
+ /*
+ * If the re-encoding failed, out might be NULL here; in that
+ * case we just return the commit message verbatim.
+ */
+ return out ? out : msg;
+}
+
+void logmsg_free(char *msg, const struct commit *commit)
+{
+ if (msg != commit->buffer)
+ free(msg);
+}
+
+static int mailmap_name(const char **email, size_t *email_len,
+ const char **name, size_t *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;
+ struct ident_split s;
+ const char *name, *mail;
+ size_t maillen, namelen;
+
+ if (split_ident_line(&s, msg, len) < 0)
+ goto skip;
+
+ name = s.name_begin;
+ namelen = s.name_end - s.name_begin;
+ mail = s.mail_begin;
+ maillen = s.mail_end - s.mail_begin;
+
+ if (part == 'N' || part == 'E') /* mailmap lookup */
+ mailmap_name(&mail, &maillen, &name, &namelen);
+ if (part == 'n' || part == 'N') { /* name */
+ strbuf_add(sb, name, namelen);
+ return placeholder_len;
+ }
+ if (part == 'e' || part == 'E') { /* email */
+ strbuf_add(sb, mail, maillen);
+ return placeholder_len;
+ }
+
+ if (!s.date_begin)
+ goto skip;
+
+ if (part == 't') { /* date, UNIX timestamp */
+ strbuf_add(sb, s.date_begin, s.date_end - s.date_begin);
+ return placeholder_len;
+ }
+
+ switch (part) {
+ case 'd': /* date */
+ strbuf_addstr(sb, show_ident_date(&s, dmode));
+ return placeholder_len;
+ case 'D': /* date, RFC2822 style */
+ strbuf_addstr(sb, show_ident_date(&s, DATE_RFC2822));
+ return placeholder_len;
+ case 'r': /* date, relative */
+ strbuf_addstr(sb, show_ident_date(&s, DATE_RELATIVE));
+ return placeholder_len;
+ case 'i': /* date, ISO 8601 */
+ strbuf_addstr(sb, show_ident_date(&s, DATE_ISO8601));
+ return placeholder_len;
+ }
+
+skip:
+ /*
+ * reading from either a bogus commit, or a reflog entry with
+ * %gn, %ge, etc.; '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;
+};
+
+enum flush_type {
+ no_flush,
+ flush_right,
+ flush_left,
+ flush_left_and_steal,
+ flush_both
+};
+
+enum trunc_type {
+ trunc_none,
+ trunc_left,
+ trunc_middle,
+ trunc_right
+};
+
+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;
+ struct signature_check signature_check;
+ enum flush_type flush_type;
+ enum trunc_type truncate;
+ char *message;
+ char *commit_encoding;
+ size_t width, indent1, indent2;
+ int auto_color;
+ int padding;
+
+ /* These offsets are relative to the start of the commit message. */
+ struct chunk author;
+ struct chunk committer;
+ 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->message;
+ 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 (starts_with(msg + i, "author ")) {
+ context->author.off = i + 7;
+ context->author.len = eol - i - 7;
+ } else if (starts_with(msg + i, "committer ")) {
+ context->committer.off = i + 10;
+ context->committer.len = eol - i - 10;
+ }
+ 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->message + c->message_off;
+ const char *start = c->message;
+
+ 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 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 int format_reflog_person(struct strbuf *sb,
+ char part,
+ struct reflog_walk_info *log,
+ enum date_mode dmode)
+{
+ const char *ident;
+
+ if (!log)
+ return 2;
+
+ ident = get_reflog_ident(log);
+ if (!ident)
+ return 2;
+
+ return format_person_part(sb, part, ident, strlen(ident), dmode);
+}
+
+static size_t parse_color(struct strbuf *sb, /* in UTF-8 */
+ const char *placeholder,
+ struct format_commit_context *c)
+{
+ if (placeholder[1] == '(') {
+ const char *begin = placeholder + 2;
+ const char *end = strchr(begin, ')');
+ char color[COLOR_MAXLEN];
+
+ if (!end)
+ return 0;
+ if (starts_with(begin, "auto,")) {
+ if (!want_color(c->pretty_ctx->color))
+ return end - placeholder + 1;
+ begin += 5;
+ }
+ color_parse_mem(begin,
+ end - begin,
+ "--pretty format", color);
+ strbuf_addstr(sb, color);
+ return end - placeholder + 1;
+ }
+ if (starts_with(placeholder + 1, "red")) {
+ strbuf_addstr(sb, GIT_COLOR_RED);
+ return 4;
+ } else if (starts_with(placeholder + 1, "green")) {
+ strbuf_addstr(sb, GIT_COLOR_GREEN);
+ return 6;
+ } else if (starts_with(placeholder + 1, "blue")) {
+ strbuf_addstr(sb, GIT_COLOR_BLUE);
+ return 5;
+ } else if (starts_with(placeholder + 1, "reset")) {
+ strbuf_addstr(sb, GIT_COLOR_RESET);
+ return 6;
+ } else
+ return 0;
+}
+
+static size_t parse_padding_placeholder(struct strbuf *sb,
+ const char *placeholder,
+ struct format_commit_context *c)
+{
+ const char *ch = placeholder;
+ enum flush_type flush_type;
+ int to_column = 0;
+
+ switch (*ch++) {
+ case '<':
+ flush_type = flush_right;
+ break;
+ case '>':
+ if (*ch == '<') {
+ flush_type = flush_both;
+ ch++;
+ } else if (*ch == '>') {
+ flush_type = flush_left_and_steal;
+ ch++;
+ } else
+ flush_type = flush_left;
+ break;
+ default:
+ return 0;
+ }
+
+ /* the next value means "wide enough to that column" */
+ if (*ch == '|') {
+ to_column = 1;
+ ch++;
+ }
+
+ if (*ch == '(') {
+ const char *start = ch + 1;
+ const char *end = start + strcspn(start, ",)");
+ char *next;
+ int width;
+ if (!end || end == start)
+ return 0;
+ width = strtoul(start, &next, 10);
+ if (next == start || width == 0)
+ return 0;
+ c->padding = to_column ? -width : width;
+ c->flush_type = flush_type;
+
+ if (*end == ',') {
+ start = end + 1;
+ end = strchr(start, ')');
+ if (!end || end == start)
+ return 0;
+ if (starts_with(start, "trunc)"))
+ c->truncate = trunc_right;
+ else if (starts_with(start, "ltrunc)"))
+ c->truncate = trunc_left;
+ else if (starts_with(start, "mtrunc)"))
+ c->truncate = trunc_middle;
+ else
+ return 0;
+ } else
+ c->truncate = trunc_none;
+
+ return end - placeholder + 1;
+ }
+ return 0;
+}
+
+static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
+ const char *placeholder,
+ void *context)
+{
+ struct format_commit_context *c = context;
+ const struct commit *commit = c->commit;
+ const char *msg = c->message;
+ struct commit_list *p;
+ int h1, h2;
+
+ /* these are independent of the commit */
+ switch (placeholder[0]) {
+ case 'C':
+ if (starts_with(placeholder + 1, "(auto)")) {
+ c->auto_color = 1;
+ return 7; /* consumed 7 bytes, "C(auto)" */
+ } else {
+ int ret = parse_color(sb, placeholder, c);
+ if (ret)
+ c->auto_color = 0;
+ /*
+ * Otherwise, we decided to treat %C<unknown>
+ * as a literal string, and the previous
+ * %C(auto) is still valid.
+ */
+ return ret;
+ }
+ 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;
+
+ case '<':
+ case '>':
+ return parse_padding_placeholder(sb, placeholder, c);
+ }
+
+ /* these depend on the commit */
+ if (!commit->object.parsed)
+ parse_object(commit->object.sha1);
+
+ switch (placeholder[0]) {
+ case 'H': /* commit hash */
+ strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_COMMIT));
+ strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
+ strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
+ return 1;
+ case 'h': /* abbreviated commit hash */
+ strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_COMMIT));
+ if (add_again(sb, &c->abbrev_commit_hash)) {
+ strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
+ return 1;
+ }
+ strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
+ c->pretty_ctx->abbrev));
+ strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
+ 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,
+ c->pretty_ctx->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,
+ c->pretty_ctx->abbrev));
+ }
+ c->abbrev_parent_hashes.len = sb->len -
+ c->abbrev_parent_hashes.off;
+ return 1;
+ case 'm': /* left/right/bottom */
+ strbuf_addstr(sb, get_revision_mark(NULL, commit));
+ return 1;
+ case 'd':
+ load_ref_decorations(DECORATE_SHORT_REFS);
+ format_decorations(sb, commit, c->auto_color);
+ 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,
+ c->pretty_ctx->date_mode_explicit,
+ (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;
+ case 'n':
+ case 'N':
+ case 'e':
+ case 'E':
+ return format_reflog_person(sb,
+ placeholder[1],
+ c->pretty_ctx->reflog_info,
+ c->pretty_ctx->date_mode);
+ }
+ return 0; /* unknown %g placeholder */
+ case 'N':
+ if (c->pretty_ctx->notes_message) {
+ strbuf_addstr(sb, c->pretty_ctx->notes_message);
+ return 1;
+ }
+ return 0;
+ }
+
+ if (placeholder[0] == 'G') {
+ if (!c->signature_check.result)
+ check_commit_signature(c->commit, &(c->signature_check));
+ switch (placeholder[1]) {
+ case 'G':
+ if (c->signature_check.gpg_output)
+ strbuf_addstr(sb, c->signature_check.gpg_output);
+ break;
+ case '?':
+ switch (c->signature_check.result) {
+ case 'G':
+ case 'B':
+ case 'U':
+ case 'N':
+ strbuf_addch(sb, c->signature_check.result);
+ }
+ break;
+ case 'S':
+ if (c->signature_check.signer)
+ strbuf_addstr(sb, c->signature_check.signer);
+ break;
+ case 'K':
+ if (c->signature_check.key)
+ strbuf_addstr(sb, c->signature_check.key);
+ break;
+ }
+ return 2;
+ }
+
+
+ /* 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 */
+ if (c->commit_encoding)
+ strbuf_addstr(sb, c->commit_encoding);
+ return 1;
+ case 'B': /* raw body */
+ /* message_off is always left at the initial newline */
+ strbuf_addstr(sb, msg + c->message_off + 1);
+ 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_and_pad_commit(struct strbuf *sb, /* in UTF-8 */
+ const char *placeholder,
+ struct format_commit_context *c)
+{
+ struct strbuf local_sb = STRBUF_INIT;
+ int total_consumed = 0, len, padding = c->padding;
+ if (padding < 0) {
+ const char *start = strrchr(sb->buf, '\n');
+ int occupied;
+ if (!start)
+ start = sb->buf;
+ occupied = utf8_strnwidth(start, -1, 1);
+ padding = (-padding) - occupied;
+ }
+ while (1) {
+ int modifier = *placeholder == 'C';
+ int consumed = format_commit_one(&local_sb, placeholder, c);
+ total_consumed += consumed;
+
+ if (!modifier)
+ break;
+
+ placeholder += consumed;
+ if (*placeholder != '%')
+ break;
+ placeholder++;
+ total_consumed++;
+ }
+ len = utf8_strnwidth(local_sb.buf, -1, 1);
+
+ if (c->flush_type == flush_left_and_steal) {
+ const char *ch = sb->buf + sb->len - 1;
+ while (len > padding && ch > sb->buf) {
+ const char *p;
+ if (*ch == ' ') {
+ ch--;
+ padding++;
+ continue;
+ }
+ /* check for trailing ansi sequences */
+ if (*ch != 'm')
+ break;
+ p = ch - 1;
+ while (ch - p < 10 && *p != '\033')
+ p--;
+ if (*p != '\033' ||
+ ch + 1 - p != display_mode_esc_sequence_len(p))
+ break;
+ /*
+ * got a good ansi sequence, put it back to
+ * local_sb as we're cutting sb
+ */
+ strbuf_insert(&local_sb, 0, p, ch + 1 - p);
+ ch = p - 1;
+ }
+ strbuf_setlen(sb, ch + 1 - sb->buf);
+ c->flush_type = flush_left;
+ }
+
+ if (len > padding) {
+ switch (c->truncate) {
+ case trunc_left:
+ strbuf_utf8_replace(&local_sb,
+ 0, len - (padding - 2),
+ "..");
+ break;
+ case trunc_middle:
+ strbuf_utf8_replace(&local_sb,
+ padding / 2 - 1,
+ len - (padding - 2),
+ "..");
+ break;
+ case trunc_right:
+ strbuf_utf8_replace(&local_sb,
+ padding - 2, len - (padding - 2),
+ "..");
+ break;
+ case trunc_none:
+ break;
+ }
+ strbuf_addstr(sb, local_sb.buf);
+ } else {
+ int sb_len = sb->len, offset = 0;
+ if (c->flush_type == flush_left)
+ offset = padding - len;
+ else if (c->flush_type == flush_both)
+ offset = (padding - len) / 2;
+ /*
+ * we calculate padding in columns, now
+ * convert it back to chars
+ */
+ padding = padding - len + local_sb.len;
+ strbuf_grow(sb, padding);
+ strbuf_setlen(sb, sb_len + padding);
+ memset(sb->buf + sb_len, ' ', sb->len - sb_len);
+ memcpy(sb->buf + sb_len + offset, local_sb.buf,
+ local_sb.len);
+ }
+ strbuf_release(&local_sb);
+ c->flush_type = no_flush;
+ return total_consumed;
+}
+
+static size_t format_commit_item(struct strbuf *sb, /* in UTF-8 */
+ const char *placeholder,
+ void *context)
+{
+ int consumed;
+ size_t orig_len;
+ enum {
+ NO_MAGIC,
+ ADD_LF_BEFORE_NON_EMPTY,
+ DEL_LF_BEFORE_EMPTY,
+ ADD_SP_BEFORE_NON_EMPTY
+ } magic = NO_MAGIC;
+
+ switch (placeholder[0]) {
+ case '-':
+ magic = DEL_LF_BEFORE_EMPTY;
+ break;
+ case '+':
+ magic = ADD_LF_BEFORE_NON_EMPTY;
+ break;
+ case ' ':
+ magic = ADD_SP_BEFORE_NON_EMPTY;
+ break;
+ default:
+ break;
+ }
+ if (magic != NO_MAGIC)
+ placeholder++;
+
+ orig_len = sb->len;
+ if (((struct format_commit_context *)context)->flush_type != no_flush)
+ consumed = format_and_pad_commit(sb, placeholder, context);
+ else
+ 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) {
+ if (magic == ADD_LF_BEFORE_NON_EMPTY)
+ strbuf_insert(sb, orig_len, "\n", 1);
+ else if (magic == ADD_SP_BEFORE_NON_EMPTY)
+ strbuf_insert(sb, orig_len, " ", 1);
+ }
+ return consumed + 1;
+}
+
+static size_t userformat_want_item(struct strbuf *sb, const char *placeholder,
+ void *context)
+{
+ struct userformat_want *w = context;
+
+ if (*placeholder == '+' || *placeholder == '-' || *placeholder == ' ')
+ placeholder++;
+
+ switch (*placeholder) {
+ case 'N':
+ w->notes = 1;
+ break;
+ }
+ return 0;
+}
+
+void userformat_find_requirements(const char *fmt, struct userformat_want *w)
+{
+ struct strbuf dummy = STRBUF_INIT;
+
+ if (!fmt) {
+ if (!user_format)
+ return;
+ fmt = user_format;
+ }
+ strbuf_expand(&dummy, fmt, userformat_want_item, w);
+ strbuf_release(&dummy);
+}
+
+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;
+ const char *output_enc = pretty_ctx->output_encoding;
+ const char *utf8 = "UTF-8";
+
+ memset(&context, 0, sizeof(context));
+ context.commit = commit;
+ context.pretty_ctx = pretty_ctx;
+ context.wrap_start = sb->len;
+ context.message = logmsg_reencode(commit,
+ &context.commit_encoding,
+ output_enc);
+
+ strbuf_expand(sb, format, format_commit_item, &context);
+ rewrap_message_tail(sb, &context, 0, 0, 0);
+
+ if (output_enc) {
+ if (same_encoding(utf8, output_enc))
+ output_enc = NULL;
+ } else {
+ if (context.commit_encoding &&
+ !same_encoding(context.commit_encoding, utf8))
+ output_enc = context.commit_encoding;
+ }
+
+ if (output_enc) {
+ int outsz;
+ char *out = reencode_string_len(sb->buf, sb->len,
+ output_enc, utf8, &outsz);
+ if (out)
+ strbuf_attach(sb, out, outsz, outsz + 1);
+ }
+
+ free(context.commit_encoding);
+ logmsg_free(context.message, commit);
+ free(context.signature_check.gpg_output);
+ free(context.signature_check.signer);
+}
+
+static void pp_header(struct pretty_print_context *pp,
+ 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 (pp->fmt == CMIT_FMT_RAW) {
+ strbuf_add(sb, line, linelen);
+ continue;
+ }
+
+ if (starts_with(line, "parent ")) {
+ 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(pp, sb, commit);
+ parents_shown = 1;
+ }
+
+ /*
+ * MEDIUM == DEFAULT shows only author with dates.
+ * FULL shows both authors but not dates.
+ * FULLER shows both authors and dates.
+ */
+ if (starts_with(line, "author ")) {
+ strbuf_grow(sb, linelen + 80);
+ pp_user_info(pp, "Author", sb, line + 7, encoding);
+ }
+ if (starts_with(line, "committer ") &&
+ (pp->fmt == CMIT_FMT_FULL || pp->fmt == CMIT_FMT_FULLER)) {
+ strbuf_grow(sb, linelen + 80);
+ pp_user_info(pp, "Commit", sb, line + 10, encoding);
+ }
+ }
+}
+
+void pp_title_line(struct pretty_print_context *pp,
+ const char **msg_p,
+ struct strbuf *sb,
+ const char *encoding,
+ int need_8bit_cte)
+{
+ static const int max_length = 78; /* per rfc2047 */
+ struct strbuf title;
+
+ strbuf_init(&title, 80);
+ *msg_p = format_subject(&title, *msg_p,
+ pp->preserve_subject ? "\n" : " ");
+
+ strbuf_grow(sb, title.len + 1024);
+ if (pp->subject) {
+ strbuf_addstr(sb, pp->subject);
+ if (needs_rfc2047_encoding(title.buf, title.len, RFC2047_SUBJECT))
+ add_rfc2047(sb, title.buf, title.len,
+ encoding, RFC2047_SUBJECT);
+ else
+ strbuf_add_wrapped_bytes(sb, title.buf, title.len,
+ -last_line_length(sb), 1, max_length);
+ } else {
+ strbuf_addbuf(sb, &title);
+ }
+ strbuf_addch(sb, '\n');
+
+ if (need_8bit_cte == 0) {
+ int i;
+ for (i = 0; i < pp->in_body_headers.nr; i++) {
+ if (has_non_ascii(pp->in_body_headers.items[i].string)) {
+ need_8bit_cte = 1;
+ break;
+ }
+ }
+ }
+
+ 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 (pp->after_subject) {
+ strbuf_addstr(sb, pp->after_subject);
+ }
+ if (pp->fmt == CMIT_FMT_EMAIL) {
+ strbuf_addch(sb, '\n');
+ }
+
+ if (pp->in_body_headers.nr) {
+ int i;
+ for (i = 0; i < pp->in_body_headers.nr; i++) {
+ strbuf_addstr(sb, pp->in_body_headers.items[i].string);
+ free(pp->in_body_headers.items[i].string);
+ }
+ string_list_clear(&pp->in_body_headers, 0);
+ strbuf_addch(sb, '\n');
+ }
+
+ strbuf_release(&title);
+}
+
+void pp_remainder(struct pretty_print_context *pp,
+ 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 (pp->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');
+ }
+}
+
+void pretty_print_commit(struct pretty_print_context *pp,
+ const struct commit *commit,
+ struct strbuf *sb)
+{
+ unsigned long beginning_of_body;
+ int indent = 4;
+ const char *msg;
+ char *reencoded;
+ const char *encoding;
+ int need_8bit_cte = pp->need_8bit_cte;
+
+ if (pp->fmt == CMIT_FMT_USERFORMAT) {
+ format_commit_message(commit, user_format, sb, pp);
+ return;
+ }
+
+ encoding = get_log_output_encoding();
+ msg = reencoded = logmsg_reencode(commit, NULL, encoding);
+
+ if (pp->fmt == CMIT_FMT_ONELINE || pp->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 (pp->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(pp, encoding, commit, &msg, sb);
+ if (pp->fmt != CMIT_FMT_ONELINE && !pp->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 (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
+ pp_title_line(pp, &msg, sb, encoding, need_8bit_cte);
+
+ beginning_of_body = sb->len;
+ if (pp->fmt != CMIT_FMT_ONELINE)
+ pp_remainder(pp, &msg, sb, indent);
+ strbuf_rtrim(sb);
+
+ /* Make sure there is an EOLN for the non-oneline case */
+ if (pp->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 (pp->fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
+ strbuf_addch(sb, '\n');
+
+ logmsg_free(reencoded, commit);
+}
+
+void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit,
+ struct strbuf *sb)
+{
+ struct pretty_print_context pp = {0};
+ pp.fmt = fmt;
+ pretty_print_commit(&pp, commit, sb);
+}