#define USE_THE_REPOSITORY_VARIABLE

#define DISABLE_SIGN_COMPARE_WARNINGS

#include "git-compat-util.h"

#include "commit-reach.h"

#include "commit-slab.h"

#include "config.h"

#include "diff.h"

#include "diffcore.h"

#include "environment.h"

#include "hex.h"

#include "object-name.h"

#include "object-file.h"

#include "repository.h"

#include "tmp-objdir.h"

#include "commit.h"

#include "tag.h"

#include "graph.h"

#include "log-tree.h"

#include "merge-ort.h"

#include "reflog-walk.h"

#include "refs.h"

#include "replace-object.h"

#include "revision.h"

#include "string-list.h"

#include "color.h"

#include "gpg-interface.h"

#include "sequencer.h"

#include "line-log.h"

#include "help.h"

#include "range-diff.h"

#include "strmap.h"

#include "tree.h"

#include "wildmatch.h"

#include "write-or-die.h"

#include "pager.h"

static struct decoration name_decoration = { "object names" };

static int decoration_loaded;

static int decoration_flags;

static char decoration_colors[][COLOR_MAXLEN] = {

  GIT_COLOR_RESET,

  GIT_COLOR_BOLD_GREEN, /* REF_LOCAL */

  GIT_COLOR_BOLD_RED, /* REF_REMOTE */

  GIT_COLOR_BOLD_YELLOW,  /* REF_TAG */

  GIT_COLOR_BOLD_MAGENTA, /* REF_STASH */

  GIT_COLOR_BOLD_CYAN,  /* REF_HEAD */

  GIT_COLOR_BOLD_BLUE,  /* GRAFTED */

};

static const char *color_decorate_slots[] = {

  [DECORATION_REF_LOCAL]  = "branch",

  [DECORATION_REF_REMOTE] = "remoteBranch",

  [DECORATION_REF_TAG]  = "tag",

  [DECORATION_REF_STASH]  = "stash",

  [DECORATION_REF_HEAD] = "HEAD",

  [DECORATION_GRAFTED]  = "grafted",

};

static const char *decorate_get_color(enum git_colorbool decorate_use_color, enum decoration_type ix)

{

  if (want_color(decorate_use_color))

    return decoration_colors[ix];

  return "";

}

define_list_config_array(color_decorate_slots);

int parse_decorate_color_config(const char *var, const char *slot_name, const char *value)

{

  int slot = LOOKUP_CONFIG(color_decorate_slots, slot_name);

  if (slot < 0)

    return 0;

  if (!value)

    return config_error_nonbool(var);

  return color_parse(value, decoration_colors[slot]);

}

/*

 * log-tree.c uses DIFF_OPT_TST for determining whether to use color

 * for showing the commit sha1, use the same check for --decorate

 */

#define decorate_get_color_opt(o, ix) \

  decorate_get_color((o)->use_color, ix)

void add_name_decoration(enum decoration_type type, const char *name, struct object *obj)

{

  struct name_decoration *res;

  FLEX_ALLOC_STR(res, name, name);

  res->type = type;

  res->next = add_decoration(&name_decoration, obj, res);

}

const struct name_decoration *get_name_decoration(const struct object *obj)

{

  load_ref_decorations(NULL, DECORATE_SHORT_REFS);

  return lookup_decoration(&name_decoration, obj);

}

static int match_ref_pattern(const char *refname,

           const struct string_list_item *item)

{

  int matched = 0;

  if (!item->util) {

    if (!wildmatch(item->string, refname, 0))

      matched = 1;

  } else {

    const char *rest;

    if (skip_prefix(refname, item->string, &rest) &&

        (!*rest || *rest == '/'))

      matched = 1;

  }

  return matched;

}

static int ref_filter_match(const char *refname,

          const struct decoration_filter *filter)

{

  struct string_list_item *item;

  const struct string_list *exclude_patterns = filter->exclude_ref_pattern;

  const struct string_list *include_patterns = filter->include_ref_pattern;

  const struct string_list *exclude_patterns_config =

        filter->exclude_ref_config_pattern;

  if (exclude_patterns && exclude_patterns->nr) {

    for_each_string_list_item(item, exclude_patterns) {

      if (match_ref_pattern(refname, item))

        return 0;

    }

  }

  if (include_patterns && include_patterns->nr) {

    for_each_string_list_item(item, include_patterns) {

      if (match_ref_pattern(refname, item))

        return 1;

    }

    return 0;

  }

  if (exclude_patterns_config && exclude_patterns_config->nr) {

    for_each_string_list_item(item, exclude_patterns_config) {

      if (match_ref_pattern(refname, item))

        return 0;

    }

  }

  return 1;

}

static int add_ref_decoration(const struct reference *ref, void *cb_data)

{

  int i;

  struct object *obj;

  enum object_type objtype;

  enum decoration_type deco_type = DECORATION_NONE;

  struct decoration_filter *filter = (struct decoration_filter *)cb_data;

  const char *git_replace_ref_base = ref_namespace[NAMESPACE_REPLACE].ref;

  if (filter && !ref_filter_match(ref->name, filter))

    return 0;

  if (starts_with(ref->name, git_replace_ref_base)) {

    struct object_id original_oid;

    if (!replace_refs_enabled(the_repository))

      return 0;

    if (get_oid_hex(ref->name + strlen(git_replace_ref_base),

        &original_oid)) {

      warning("invalid replace ref %s", ref->name);

      return 0;

    }

    obj = parse_object(the_repository, &original_oid);

    if (obj)

      add_name_decoration(DECORATION_GRAFTED, "replaced", obj);

    return 0;

  }

  objtype = odb_read_object_info(the_repository->objects, ref->oid, NULL);

  if (objtype < 0)

    return 0;

  obj = lookup_object_by_type(the_repository, ref->oid, objtype);

  for (i = 0; i < ARRAY_SIZE(ref_namespace); i++) {

    struct ref_namespace_info *info = &ref_namespace[i];

    if (!info->decoration)

      continue;

    if (info->exact) {

      if (!strcmp(ref->name, info->ref)) {

        deco_type = info->decoration;

        break;

      }

    } else if (starts_with(ref->name, info->ref)) {

      deco_type = info->decoration;

      break;

    }

  }

  add_name_decoration(deco_type, ref->name, obj);

  while (obj->type == OBJ_TAG) {

    if (!obj->parsed)

      parse_object(the_repository, &obj->oid);

    obj = ((struct tag *)obj)->tagged;

    if (!obj)

      break;

    add_name_decoration(DECORATION_REF_TAG, ref->name, obj);

  }

  return 0;

}

static int add_graft_decoration(const struct commit_graft *graft,

        void *cb_data UNUSED)

{

  struct commit *commit = lookup_commit(the_repository, &graft->oid);

  if (!commit)

    return 0;

  add_name_decoration(DECORATION_GRAFTED, "grafted", &commit->object);

  return 0;

}

void load_ref_decorations(struct decoration_filter *filter, int flags)

{

  if (!decoration_loaded) {

    if (filter) {

      struct string_list_item *item;

      for_each_string_list_item(item, filter->exclude_ref_pattern) {

        normalize_glob_ref(item, NULL, item->string);

      }

      for_each_string_list_item(item, filter->include_ref_pattern) {

        normalize_glob_ref(item, NULL, item->string);

      }

      for_each_string_list_item(item, filter->exclude_ref_config_pattern) {

        normalize_glob_ref(item, NULL, item->string);

      }

      /* normalize_glob_ref duplicates the strings */

      filter->exclude_ref_pattern->strdup_strings = 1;

      filter->include_ref_pattern->strdup_strings = 1;

      filter->exclude_ref_config_pattern->strdup_strings = 1;

    }

    decoration_loaded = 1;

    decoration_flags = flags;

    refs_for_each_ref(get_main_ref_store(the_repository),

          add_ref_decoration, filter);

    refs_head_ref(get_main_ref_store(the_repository),

            add_ref_decoration, filter);

    for_each_commit_graft(add_graft_decoration, filter);

  }

}

void load_branch_decorations(void)

{

  if (!decoration_loaded) {

    struct string_list decorate_refs_exclude = STRING_LIST_INIT_NODUP;

    struct string_list decorate_refs_exclude_config = STRING_LIST_INIT_NODUP;

    struct string_list decorate_refs_include = STRING_LIST_INIT_NODUP;

    struct decoration_filter decoration_filter = {

      .include_ref_pattern = &decorate_refs_include,

      .exclude_ref_pattern = &decorate_refs_exclude,

      .exclude_ref_config_pattern = &decorate_refs_exclude_config,

    };

    string_list_append(&decorate_refs_include, "refs/heads/");

    load_ref_decorations(&decoration_filter, 0);

    string_list_clear(&decorate_refs_exclude, 0);

    string_list_clear(&decorate_refs_exclude_config, 0);

    string_list_clear(&decorate_refs_include, 0);

  }

}

static void show_parents(struct commit *commit, int abbrev, FILE *file)

{

  struct commit_list *p;

  for (p = commit->parents; p ; p = p->next) {

    struct commit *parent = p->item;

    fprintf(file, " %s",

      repo_find_unique_abbrev(the_repository, &parent->object.oid, abbrev));

  }

}

static void show_children(struct rev_info *opt, struct commit *commit, int abbrev)

{

  struct commit_list *p = lookup_decoration(&opt->children, &commit->object);

  for ( ; p; p = p->next) {

    fprintf(opt->diffopt.file, " %s",

      repo_find_unique_abbrev(the_repository, &p->item->object.oid, abbrev));

  }

}

/*

 * Do we have HEAD in the output, and also the branch it points at?

 * If so, find that decoration entry for that current branch.

 */

static const struct name_decoration *current_pointed_by_HEAD(const struct name_decoration *decoration)

{

  const struct name_decoration *list, *head = NULL;

  const char *branch_name = NULL;

  int rru_flags;

  /* First find HEAD */

  for (list = decoration; list; list = list->next)

    if (list->type == DECORATION_REF_HEAD) {

      head = list;

      break;

    }

  if (!head)

    return NULL;

  /* Now resolve and find the matching current branch */

  branch_name = refs_resolve_ref_unsafe(get_main_ref_store(the_repository),

                "HEAD", 0, NULL, &rru_flags);

  if (!branch_name || !(rru_flags & REF_ISSYMREF))

    return NULL;

  if (!starts_with(branch_name, "refs/"))

    return NULL;

  /* OK, do we have that ref in the list? */

  for (list = decoration; list; list = list->next)

    if ((list->type == DECORATION_REF_LOCAL) &&

        !strcmp(branch_name, list->name)) {

      return list;

    }

  return NULL;

}

static void show_name(struct strbuf *sb, const struct name_decoration *decoration)

{

  if (decoration_flags == DECORATE_SHORT_REFS)

    strbuf_addstr(sb, prettify_refname(decoration->name));

  else

    strbuf_addstr(sb, decoration->name);

}

/*

 * The caller makes sure there is no funny color before calling.

 * format_decorations ensures the same after return.

 */

void format_decorations(struct strbuf *sb,

      const struct commit *commit,

      enum git_colorbool use_color,

      const struct decoration_options *opts)

{

  const struct name_decoration *decoration;

  const struct name_decoration *current_and_HEAD;

  const char *color_commit, *color_reset;

  const char *prefix = " (";

  const char *suffix = ")";

  const char *separator = ", ";

  const char *pointer = " -> ";

  const char *tag = "tag: ";

  decoration = get_name_decoration(&commit->object);

  if (!decoration)

    return;

  if (opts) {

    if (opts->prefix)

      prefix = opts->prefix;

    if (opts->suffix)

      suffix = opts->suffix;

    if (opts->separator)

      separator = opts->separator;

    if (opts->pointer)

      pointer = opts->pointer;

    if (opts->tag)

      tag = opts->tag;

  }

  color_commit = diff_get_color(use_color, DIFF_COMMIT);

  color_reset = decorate_get_color(use_color, DECORATION_NONE);

  current_and_HEAD = current_pointed_by_HEAD(decoration);

  while (decoration) {

    /*

     * When both current and HEAD are there, only

     * show HEAD->current where HEAD would have

     * appeared, skipping the entry for current.

     */

    if (decoration != current_and_HEAD) {

      const char *color =

        decorate_get_color(use_color, decoration->type);

      if (*prefix) {

        strbuf_addstr(sb, color_commit);

        strbuf_addstr(sb, prefix);

        strbuf_addstr(sb, color_reset);

      }

      if (*tag && decoration->type == DECORATION_REF_TAG) {

        strbuf_addstr(sb, color);

        strbuf_addstr(sb, tag);

        strbuf_addstr(sb, color_reset);

      }

      strbuf_addstr(sb, color);

      show_name(sb, decoration);

      strbuf_addstr(sb, color_reset);

      if (current_and_HEAD &&

          decoration->type == DECORATION_REF_HEAD) {

        strbuf_addstr(sb, color_commit);

        strbuf_addstr(sb, pointer);

        strbuf_addstr(sb, color_reset);

        strbuf_addstr(sb, decorate_get_color(use_color, current_and_HEAD->type));

        show_name(sb, current_and_HEAD);

        strbuf_addstr(sb, color_reset);

      }

      prefix = separator;

    }

    decoration = decoration->next;

  }

  if (*suffix) {

    strbuf_addstr(sb, color_commit);

    strbuf_addstr(sb, suffix);

    strbuf_addstr(sb, color_reset);

  }

}

void show_decorations(struct rev_info *opt, struct commit *commit)

{

  struct strbuf sb = STRBUF_INIT;

  if (opt->sources) {

    char **slot = revision_sources_peek(opt->sources, commit);

    if (slot && *slot)

      fprintf(opt->diffopt.file, "\t%s", *slot);

  }

  if (!opt->show_decorations)

    return;

  format_decorations(&sb, commit, opt->diffopt.use_color, NULL);

  fputs(sb.buf, opt->diffopt.file);

  strbuf_release(&sb);

}

void fmt_output_subject(struct strbuf *filename,

      const char *subject,

      struct rev_info *info)

{

  const char *suffix = info->patch_suffix;

  int nr = info->nr;

  int start_len = filename->len;

  int max_len = start_len + info->patch_name_max - (strlen(suffix) + 1);

  if (info->reroll_count) {

    struct strbuf temp = STRBUF_INIT;

    strbuf_addf(&temp, "v%s", info->reroll_count);

    format_sanitized_subject(filename, temp.buf, temp.len);

    strbuf_addstr(filename, "-");

    strbuf_release(&temp);

  }

  strbuf_addf(filename, "%04d-%s", nr, subject);

  if (max_len < filename->len)

    strbuf_setlen(filename, max_len);

  strbuf_addstr(filename, suffix);

}

void fmt_output_commit(struct strbuf *filename,

           struct commit *commit,

           struct rev_info *info)

{

  struct pretty_print_context ctx = {0};

  struct strbuf subject = STRBUF_INIT;

  repo_format_commit_message(the_repository, commit, "%f", &subject,

           &ctx);

  fmt_output_subject(filename, subject.buf, info);

  strbuf_release(&subject);

}

void fmt_output_email_subject(struct strbuf *sb, struct rev_info *opt)

{

  if (opt->total > 0) {

    strbuf_addf(sb, "Subject: [%s%s%0*d/%d] ",

          opt->subject_prefix,

          *opt->subject_prefix ? " " : "",

          decimal_width(opt->total),

          opt->nr, opt->total);

  } else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {

    strbuf_addf(sb, "Subject: [%s] ",

          opt->subject_prefix);

  } else {

    strbuf_addstr(sb, "Subject: ");

  }

}

void log_write_email_headers(struct rev_info *opt, struct commit *commit,

           char **extra_headers_p,

           int *need_8bit_cte_p,

           int maybe_multipart)

{

  struct strbuf headers = STRBUF_INIT;

  const char *name = oid_to_hex(opt->zero_commit ?

              null_oid(the_hash_algo) : &commit->object.oid);

  *need_8bit_cte_p = 0; /* unknown */

  if (opt->extra_headers && *opt->extra_headers)

    strbuf_addstr(&headers, opt->extra_headers);

  fprintf(opt->diffopt.file, "From %s Mon Sep 17 00:00:00 2001\n", name);

  graph_show_oneline(opt->graph);

  if (opt->message_id) {

    fprintf(opt->diffopt.file, "Message-ID: <%s>\n", opt->message_id);

    graph_show_oneline(opt->graph);

  }

  if (opt->ref_message_ids && opt->ref_message_ids->nr > 0) {

    int i, n;

    n = opt->ref_message_ids->nr;

    fprintf(opt->diffopt.file, "In-Reply-To: <%s>\n", opt->ref_message_ids->items[n-1].string);

    for (i = 0; i < n; i++)

      fprintf(opt->diffopt.file, "%s<%s>\n", (i > 0 ? "\t" : "References: "),

             opt->ref_message_ids->items[i].string);

    graph_show_oneline(opt->graph);

  }

  if (opt->mime_boundary && maybe_multipart) {

    static struct strbuf buffer = STRBUF_INIT;

    struct strbuf filename =  STRBUF_INIT;

    *need_8bit_cte_p = -1; /* NEVER */

    strbuf_reset(&buffer);

    strbuf_addf(&headers,

       "MIME-Version: 1.0\n"

       "Content-Type: multipart/mixed;"

       " boundary=\"%s%s\"\n"

       "\n"

       "This is a multi-part message in MIME "

       "format.\n"

       "--%s%s\n"

       "Content-Type: text/plain; "

       "charset=UTF-8; format=fixed\n"

       "Content-Transfer-Encoding: 8bit\n\n",

       mime_boundary_leader, opt->mime_boundary,

       mime_boundary_leader, opt->mime_boundary);

    if (opt->numbered_files)

      strbuf_addf(&filename, "%d", opt->nr);

    else

      fmt_output_commit(&filename, commit, opt);

    strbuf_addf(&buffer,

       "\n--%s%s\n"

       "Content-Type: text/x-patch;"

       " name=\"%s\"\n"

       "Content-Transfer-Encoding: 8bit\n"

       "Content-Disposition: %s;"

       " filename=\"%s\"\n\n",

       mime_boundary_leader, opt->mime_boundary,

       filename.buf,

       opt->no_inline ? "attachment" : "inline",

       filename.buf);

    opt->diffopt.stat_sep = buffer.buf;

    strbuf_release(&filename);

  }

  *extra_headers_p = headers.len ? strbuf_detach(&headers, NULL) : NULL;

}

static void show_sig_lines(struct rev_info *opt, int status, const char *bol)

{

  const char *color, *reset, *eol;

  color = diff_get_color_opt(&opt->diffopt,

           status ? DIFF_WHITESPACE : DIFF_FRAGINFO);

  reset = diff_get_color_opt(&opt->diffopt, DIFF_RESET);

  while (*bol) {

    eol = strchrnul(bol, '\n');

    fprintf(opt->diffopt.file, "%s%.*s%s%s", color, (int)(eol - bol), bol, reset,

           *eol ? "\n" : "");

    graph_show_oneline(opt->graph);

    bol = (*eol) ? (eol + 1) : eol;

  }

}

static void show_signature(struct rev_info *opt, struct commit *commit)

{

  struct strbuf payload = STRBUF_INIT;

  struct strbuf signature = STRBUF_INIT;

  struct signature_check sigc = { 0 };

  int status;

  if (parse_signed_commit(commit, &payload, &signature, the_hash_algo) <= 0)

    goto out;

  sigc.payload_type = SIGNATURE_PAYLOAD_COMMIT;

  sigc.payload = strbuf_detach(&payload, &sigc.payload_len);

  status = check_signature(&sigc, signature.buf, signature.len);

  if (status && !sigc.output)

    show_sig_lines(opt, status, "No signature\n");

  else

    show_sig_lines(opt, status, sigc.output);

  signature_check_clear(&sigc);

 out:

  strbuf_release(&payload);

  strbuf_release(&signature);

}

static int which_parent(const struct object_id *oid, const struct commit *commit)

{

  int nth;

  const struct commit_list *parent;

  for (nth = 0, parent = commit->parents; parent; parent = parent->next) {

    if (oideq(&parent->item->object.oid, oid))

      return nth;

    nth++;

  }

  return -1;

}

static int is_common_merge(const struct commit *commit)

{

  return (commit->parents

    && commit->parents->next

    && !commit->parents->next->next);

}

static int show_one_mergetag(struct commit *commit,

           struct commit_extra_header *extra,

           void *data)

{

  struct rev_info *opt = (struct rev_info *)data;

  struct object_id oid;

  struct tag *tag;

  struct strbuf verify_message;

  struct signature_check sigc = { 0 };

  int status, nth;

  struct strbuf payload = STRBUF_INIT;

  struct strbuf signature = STRBUF_INIT;

  hash_object_file(the_hash_algo, extra->value, extra->len,

       OBJ_TAG, &oid);

  tag = lookup_tag(the_repository, &oid);

  if (!tag)

    return -1; /* error message already given */

  strbuf_init(&verify_message, 256);

  if (parse_tag_buffer(the_repository, tag, extra->value, extra->len))

    strbuf_addstr(&verify_message, "malformed mergetag\n");

  else if (is_common_merge(commit) &&

     oideq(&tag->tagged->oid,

           &commit->parents->next->item->object.oid))

    strbuf_addf(&verify_message,

          "merged tag '%s'\n", tag->tag);

  else if ((nth = which_parent(&tag->tagged->oid, commit)) < 0)

    strbuf_addf(&verify_message, "tag %s names a non-parent %s\n",

            tag->tag, oid_to_hex(&tag->tagged->oid));

  else

    strbuf_addf(&verify_message,

          "parent #%d, tagged '%s'\n", nth + 1, tag->tag);

  status = -1;

  if (parse_signature(extra->value, extra->len, &payload, &signature)) {

    /* could have a good signature */

    sigc.payload_type = SIGNATURE_PAYLOAD_TAG;

    sigc.payload = strbuf_detach(&payload, &sigc.payload_len);

    status = check_signature(&sigc, signature.buf, signature.len);

    if (sigc.output)

      strbuf_addstr(&verify_message, sigc.output);

    else

      strbuf_addstr(&verify_message, "No signature\n");

    signature_check_clear(&sigc);

    /* otherwise we couldn't verify, which is shown as bad */

  }

  show_sig_lines(opt, status, verify_message.buf);

  strbuf_release(&verify_message);

  strbuf_release(&payload);

  strbuf_release(&signature);

  return 0;

}

static int show_mergetag(struct rev_info *opt, struct commit *commit)

{

  return for_each_mergetag(show_one_mergetag, commit, opt);

}

static void next_commentary_block(struct rev_info *opt, struct strbuf *sb)

{

  const char *x = opt->shown_dashes ? "\n" : "---\n";

  if (sb)

    strbuf_addstr(sb, x);

  else

    fputs(x, opt->diffopt.file);

  opt->shown_dashes = 1;

}

static void show_diff_of_diff(struct rev_info *opt)

{

  if (!cmit_fmt_is_mail(opt->commit_format))

    return;

  if (opt->idiff_oid1) {

    struct diff_queue_struct dq;

    memcpy(&dq, &diff_queued_diff, sizeof(diff_queued_diff));

    diff_queue_init(&diff_queued_diff);

    fprintf_ln(opt->diffopt.file, "\n%s", opt->idiff_title);

    show_interdiff(opt->idiff_oid1, opt->idiff_oid2, 2,

             &opt->diffopt);

    memcpy(&diff_queued_diff, &dq, sizeof(diff_queued_diff));

  }

  if (opt->rdiff1) {

    struct diff_queue_struct dq;

    struct diff_options opts;

    struct range_diff_options range_diff_opts = {

      .creation_factor = opt->creation_factor,

      .dual_color = 1,

      .max_memory = RANGE_DIFF_MAX_MEMORY_DEFAULT,

      .diffopt = &opts,

      .log_arg = &opt->rdiff_log_arg

    };

    memcpy(&dq, &diff_queued_diff, sizeof(diff_queued_diff));

    diff_queue_init(&diff_queued_diff);

    fprintf_ln(opt->diffopt.file, "\n%s", opt->rdiff_title);

    /*

     * Pass minimum required diff-options to range-diff; others

     * can be added later if deemed desirable.

     */

    repo_diff_setup(the_repository, &opts);

    opts.file = opt->diffopt.file;

    opts.use_color = opt->diffopt.use_color;

    diff_setup_done(&opts);

    show_range_diff(opt->rdiff1, opt->rdiff2, &range_diff_opts);

    memcpy(&diff_queued_diff, &dq, sizeof(diff_queued_diff));

  }

}

void show_log(struct rev_info *opt)

{

  struct strbuf msgbuf = STRBUF_INIT;

  struct log_info *log = opt->loginfo;

  struct commit *commit = log->commit, *parent = log->parent;

  int abbrev_commit = opt->abbrev_commit ? opt->abbrev : the_hash_algo->hexsz;

  struct pretty_print_context ctx = {0};

  opt->loginfo = NULL;

  if (!opt->verbose_header) {

    graph_show_commit(opt->graph);

    if (!opt->graph)

      put_revision_mark(opt, commit);

    fputs(repo_find_unique_abbrev(the_repository, &commit->object.oid, abbrev_commit),

          opt->diffopt.file);

    if (opt->print_parents)

      show_parents(commit, abbrev_commit, opt->diffopt.file);

    if (opt->children.name)

      show_children(opt, commit, abbrev_commit);

    show_decorations(opt, commit);

    if (opt->graph && !graph_is_commit_finished(opt->graph)) {

      putc('\n', opt->diffopt.file);

      graph_show_remainder(opt->graph);

    }

    putc(opt->diffopt.line_termination, opt->diffopt.file);

    return;

  }

  /*

   * If use_terminator is set, we already handled any record termination

   * at the end of the last record.

   * Otherwise, add a diffopt.line_termination character before all

   * entries but the first.  (IOW, as a separator between entries)

   */

  if (opt->shown_one && !opt->use_terminator) {

    /*

     * If entries are separated by a newline, the output

     * should look human-readable.  If the last entry ended

     * with a newline, print the graph output before this

     * newline.  Otherwise it will end up as a completely blank

     * line and will look like a gap in the graph.

     *

     * If the entry separator is not a newline, the output is

     * primarily intended for programmatic consumption, and we

     * never want the extra graph output before the entry

     * separator.

     */

    if (opt->diffopt.line_termination == '\n' &&

        !opt->missing_newline)

      graph_show_padding(opt->graph);

    putc(opt->diffopt.line_termination, opt->diffopt.file);

  }

  opt->shown_one = 1;

  /*

   * If the history graph was requested,

   * print the graph, up to this commit's line

   */

  graph_show_commit(opt->graph);

  /*

   * Print header line of header..

   */

  if (cmit_fmt_is_mail(opt->commit_format)) {

    log_write_email_headers(opt, commit, &ctx.after_subject,

          &ctx.need_8bit_cte, 1);

    ctx.rev = opt;

  } else if (opt->commit_format != CMIT_FMT_USERFORMAT) {

    fputs(diff_get_color_opt(&opt->diffopt, DIFF_COMMIT), opt->diffopt.file);

    if (opt->commit_format != CMIT_FMT_ONELINE)

      fputs("commit ", opt->diffopt.file);

    if (!opt->graph)

      put_revision_mark(opt, commit);

    fputs(repo_find_unique_abbrev(the_repository, &commit->object.oid,

                abbrev_commit),

          opt->diffopt.file);

    if (opt->print_parents)

      show_parents(commit, abbrev_commit, opt->diffopt.file);

    if (opt->children.name)

      show_children(opt, commit, abbrev_commit);

    if (parent)

      fprintf(opt->diffopt.file, " (from %s)",

             repo_find_unique_abbrev(the_repository, &parent->object.oid, abbrev_commit));

    fputs(diff_get_color_opt(&opt->diffopt, DIFF_RESET), opt->diffopt.file);

    show_decorations(opt, commit);

    if (opt->commit_format == CMIT_FMT_ONELINE) {

      putc(' ', opt->diffopt.file);

    } else {

      putc('\n', opt->diffopt.file);

      graph_show_oneline(opt->graph);

    }

    if (opt->reflog_info) {

      /*

       * setup_revisions() ensures that opt->reflog_info

       * and opt->graph cannot both be set,

       * so we don't need to worry about printing the

       * graph info here.

       */

      show_reflog_message(opt->reflog_info,

              opt->commit_format == CMIT_FMT_ONELINE,

              opt->date_mode,

              opt->date_mode_explicit);

      if (opt->commit_format == CMIT_FMT_ONELINE)

        return;

    }

  }

  if (opt->show_signature) {

    show_signature(opt, commit);

    show_mergetag(opt, commit);

  }

  if (opt->show_notes) {

    int raw;

    struct strbuf notebuf = STRBUF_INIT;

    raw = (opt->commit_format == CMIT_FMT_USERFORMAT);

    format_display_notes(&commit->object.oid, &notebuf,

             get_log_output_encoding(), raw);

    ctx.notes_message = strbuf_detach(&notebuf, NULL);

  }

  /*

   * And then the pretty-printed message itself

   */

  if (ctx.need_8bit_cte >= 0 && opt->add_signoff)