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-rw-r--r--pretty.c1255
1 files changed, 1255 insertions, 0 deletions
diff --git a/pretty.c b/pretty.c
new file mode 100644
index 0000000000..f85444b27d
--- /dev/null
+++ b/pretty.c
@@ -0,0 +1,1255 @@
+#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 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 (prefixcmp(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 (!prefixcmp(fmt, "format:") || !prefixcmp(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 (prefixcmp(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 (!prefixcmp(arg, "format:") || !prefixcmp(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_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,
+ c->pretty_ctx->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,
+ 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_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':
+ if (c->pretty_ctx->show_notes) {
+ format_display_notes(commit->object.sha1, sb,
+ git_log_output_encoding ? git_log_output_encoding
+ : git_commit_encoding, 0);
+ return 1;
+ }
+ return 0;
+ }
+
+ /* 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;
+ 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_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,
+ 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;
+ 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, user_format, 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;
+
+ 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)
+ format_display_notes(commit->object.sha1, sb, encoding,
+ NOTES_SHOW_HEADER | NOTES_INDENT);
+
+ free(reencoded);
+}