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-rw-r--r--log-tree.c821
1 files changed, 821 insertions, 0 deletions
diff --git a/log-tree.c b/log-tree.c
new file mode 100644
index 0000000..c894930
--- /dev/null
+++ b/log-tree.c
@@ -0,0 +1,821 @@
+#include "cache.h"
+#include "diff.h"
+#include "commit.h"
+#include "tag.h"
+#include "graph.h"
+#include "log-tree.h"
+#include "reflog-walk.h"
+#include "refs.h"
+#include "string-list.h"
+#include "color.h"
+#include "gpg-interface.h"
+
+struct decoration name_decoration = { "object names" };
+
+enum decoration_type {
+ DECORATION_NONE = 0,
+ DECORATION_REF_LOCAL,
+ DECORATION_REF_REMOTE,
+ DECORATION_REF_TAG,
+ DECORATION_REF_STASH,
+ DECORATION_REF_HEAD,
+ DECORATION_GRAFTED,
+};
+
+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 *decorate_get_color(int decorate_use_color, enum decoration_type ix)
+{
+ if (want_color(decorate_use_color))
+ return decoration_colors[ix];
+ return "";
+}
+
+static int parse_decorate_color_slot(const char *slot)
+{
+ /*
+ * We're comparing with 'ignore-case' on
+ * (because config.c sets them all tolower),
+ * but let's match the letters in the literal
+ * string values here with how they are
+ * documented in Documentation/config.txt, for
+ * consistency.
+ *
+ * We love being consistent, don't we?
+ */
+ if (!strcasecmp(slot, "branch"))
+ return DECORATION_REF_LOCAL;
+ if (!strcasecmp(slot, "remoteBranch"))
+ return DECORATION_REF_REMOTE;
+ if (!strcasecmp(slot, "tag"))
+ return DECORATION_REF_TAG;
+ if (!strcasecmp(slot, "stash"))
+ return DECORATION_REF_STASH;
+ if (!strcasecmp(slot, "HEAD"))
+ return DECORATION_REF_HEAD;
+ return -1;
+}
+
+int parse_decorate_color_config(const char *var, const int ofs, const char *value)
+{
+ int slot = parse_decorate_color_slot(var + ofs);
+ if (slot < 0)
+ return 0;
+ if (!value)
+ return config_error_nonbool(var);
+ color_parse(value, var, decoration_colors[slot]);
+ return 0;
+}
+
+/*
+ * 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)
+
+static void add_name_decoration(enum decoration_type type, const char *name, struct object *obj)
+{
+ int nlen = strlen(name);
+ struct name_decoration *res = xmalloc(sizeof(struct name_decoration) + nlen);
+ memcpy(res->name, name, nlen + 1);
+ res->type = type;
+ res->next = add_decoration(&name_decoration, obj, res);
+}
+
+static int add_ref_decoration(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
+{
+ struct object *obj;
+ enum decoration_type type = DECORATION_NONE;
+
+ if (!prefixcmp(refname, "refs/replace/")) {
+ unsigned char original_sha1[20];
+ if (!read_replace_refs)
+ return 0;
+ if (get_sha1_hex(refname + 13, original_sha1)) {
+ warning("invalid replace ref %s", refname);
+ return 0;
+ }
+ obj = parse_object(original_sha1);
+ if (obj)
+ add_name_decoration(DECORATION_GRAFTED, "replaced", obj);
+ return 0;
+ }
+
+ obj = parse_object(sha1);
+ if (!obj)
+ return 0;
+
+ if (!prefixcmp(refname, "refs/heads/"))
+ type = DECORATION_REF_LOCAL;
+ else if (!prefixcmp(refname, "refs/remotes/"))
+ type = DECORATION_REF_REMOTE;
+ else if (!prefixcmp(refname, "refs/tags/"))
+ type = DECORATION_REF_TAG;
+ else if (!strcmp(refname, "refs/stash"))
+ type = DECORATION_REF_STASH;
+ else if (!strcmp(refname, "HEAD"))
+ type = DECORATION_REF_HEAD;
+
+ if (!cb_data || *(int *)cb_data == DECORATE_SHORT_REFS)
+ refname = prettify_refname(refname);
+ add_name_decoration(type, refname, obj);
+ while (obj->type == OBJ_TAG) {
+ obj = ((struct tag *)obj)->tagged;
+ if (!obj)
+ break;
+ add_name_decoration(DECORATION_REF_TAG, refname, obj);
+ }
+ return 0;
+}
+
+static int add_graft_decoration(const struct commit_graft *graft, void *cb_data)
+{
+ struct commit *commit = lookup_commit(graft->sha1);
+ if (!commit)
+ return 0;
+ add_name_decoration(DECORATION_GRAFTED, "grafted", &commit->object);
+ return 0;
+}
+
+void load_ref_decorations(int flags)
+{
+ static int loaded;
+ if (!loaded) {
+ loaded = 1;
+ for_each_ref(add_ref_decoration, &flags);
+ head_ref(add_ref_decoration, &flags);
+ for_each_commit_graft(add_graft_decoration, NULL);
+ }
+}
+
+static void show_parents(struct commit *commit, int abbrev)
+{
+ struct commit_list *p;
+ for (p = commit->parents; p ; p = p->next) {
+ struct commit *parent = p->item;
+ printf(" %s", find_unique_abbrev(parent->object.sha1, 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) {
+ printf(" %s", find_unique_abbrev(p->item->object.sha1, abbrev));
+ }
+}
+
+void show_decorations(struct rev_info *opt, struct commit *commit)
+{
+ const char *prefix;
+ struct name_decoration *decoration;
+ const char *color_commit =
+ diff_get_color_opt(&opt->diffopt, DIFF_COMMIT);
+ const char *color_reset =
+ decorate_get_color_opt(&opt->diffopt, DECORATION_NONE);
+
+ if (opt->show_source && commit->util)
+ printf("\t%s", (char *) commit->util);
+ if (!opt->show_decorations)
+ return;
+ decoration = lookup_decoration(&name_decoration, &commit->object);
+ if (!decoration)
+ return;
+ prefix = " (";
+ while (decoration) {
+ printf("%s", prefix);
+ fputs(decorate_get_color_opt(&opt->diffopt, decoration->type),
+ stdout);
+ if (decoration->type == DECORATION_REF_TAG)
+ fputs("tag: ", stdout);
+ printf("%s", decoration->name);
+ fputs(color_reset, stdout);
+ fputs(color_commit, stdout);
+ prefix = ", ";
+ decoration = decoration->next;
+ }
+ putchar(')');
+}
+
+/*
+ * Search for "^[-A-Za-z]+: [^@]+@" pattern. It usually matches
+ * Signed-off-by: and Acked-by: lines.
+ */
+static int detect_any_signoff(char *letter, int size)
+{
+ char *cp;
+ int seen_colon = 0;
+ int seen_at = 0;
+ int seen_name = 0;
+ int seen_head = 0;
+
+ cp = letter + size;
+ while (letter <= --cp && *cp == '\n')
+ continue;
+
+ while (letter <= cp) {
+ char ch = *cp--;
+ if (ch == '\n')
+ break;
+
+ if (!seen_at) {
+ if (ch == '@')
+ seen_at = 1;
+ continue;
+ }
+ if (!seen_colon) {
+ if (ch == '@')
+ return 0;
+ else if (ch == ':')
+ seen_colon = 1;
+ else
+ seen_name = 1;
+ continue;
+ }
+ if (('A' <= ch && ch <= 'Z') ||
+ ('a' <= ch && ch <= 'z') ||
+ ch == '-') {
+ seen_head = 1;
+ continue;
+ }
+ /* no empty last line doesn't match */
+ return 0;
+ }
+ return seen_head && seen_name;
+}
+
+static void append_signoff(struct strbuf *sb, const char *signoff)
+{
+ static const char signed_off_by[] = "Signed-off-by: ";
+ size_t signoff_len = strlen(signoff);
+ int has_signoff = 0;
+ char *cp;
+
+ cp = sb->buf;
+
+ /* First see if we already have the sign-off by the signer */
+ while ((cp = strstr(cp, signed_off_by))) {
+
+ has_signoff = 1;
+
+ cp += strlen(signed_off_by);
+ if (cp + signoff_len >= sb->buf + sb->len)
+ break;
+ if (strncmp(cp, signoff, signoff_len))
+ continue;
+ if (!isspace(cp[signoff_len]))
+ continue;
+ /* we already have him */
+ return;
+ }
+
+ if (!has_signoff)
+ has_signoff = detect_any_signoff(sb->buf, sb->len);
+
+ if (!has_signoff)
+ strbuf_addch(sb, '\n');
+
+ strbuf_addstr(sb, signed_off_by);
+ strbuf_add(sb, signoff, signoff_len);
+ strbuf_addch(sb, '\n');
+}
+
+static unsigned int digits_in_number(unsigned int number)
+{
+ unsigned int i = 10, result = 1;
+ while (i <= number) {
+ i *= 10;
+ result++;
+ }
+ return result;
+}
+
+void get_patch_filename(struct commit *commit, const char *subject, int nr,
+ const char *suffix, struct strbuf *buf)
+{
+ int suffix_len = strlen(suffix) + 1;
+ int start_len = buf->len;
+
+ strbuf_addf(buf, commit || subject ? "%04d-" : "%d", nr);
+ if (commit || subject) {
+ int max_len = start_len + FORMAT_PATCH_NAME_MAX - suffix_len;
+ struct pretty_print_context ctx = {0};
+
+ if (subject)
+ strbuf_addstr(buf, subject);
+ else if (commit)
+ format_commit_message(commit, "%f", buf, &ctx);
+
+ if (max_len < buf->len)
+ strbuf_setlen(buf, max_len);
+ strbuf_addstr(buf, suffix);
+ }
+}
+
+void log_write_email_headers(struct rev_info *opt, struct commit *commit,
+ const char **subject_p,
+ const char **extra_headers_p,
+ int *need_8bit_cte_p)
+{
+ const char *subject = NULL;
+ const char *extra_headers = opt->extra_headers;
+ const char *name = sha1_to_hex(commit->object.sha1);
+
+ *need_8bit_cte_p = 0; /* unknown */
+ if (opt->total > 0) {
+ static char buffer[64];
+ snprintf(buffer, sizeof(buffer),
+ "Subject: [%s%s%0*d/%d] ",
+ opt->subject_prefix,
+ *opt->subject_prefix ? " " : "",
+ digits_in_number(opt->total),
+ opt->nr, opt->total);
+ subject = buffer;
+ } else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {
+ static char buffer[256];
+ snprintf(buffer, sizeof(buffer),
+ "Subject: [%s] ",
+ opt->subject_prefix);
+ subject = buffer;
+ } else {
+ subject = "Subject: ";
+ }
+
+ printf("From %s Mon Sep 17 00:00:00 2001\n", name);
+ graph_show_oneline(opt->graph);
+ if (opt->message_id) {
+ printf("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;
+ printf("In-Reply-To: <%s>\n", opt->ref_message_ids->items[n-1].string);
+ for (i = 0; i < n; i++)
+ printf("%s<%s>\n", (i > 0 ? "\t" : "References: "),
+ opt->ref_message_ids->items[i].string);
+ graph_show_oneline(opt->graph);
+ }
+ if (opt->mime_boundary) {
+ static char subject_buffer[1024];
+ static char buffer[1024];
+ struct strbuf filename = STRBUF_INIT;
+ *need_8bit_cte_p = -1; /* NEVER */
+ snprintf(subject_buffer, sizeof(subject_buffer) - 1,
+ "%s"
+ "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",
+ extra_headers ? extra_headers : "",
+ mime_boundary_leader, opt->mime_boundary,
+ mime_boundary_leader, opt->mime_boundary);
+ extra_headers = subject_buffer;
+
+ get_patch_filename(opt->numbered_files ? NULL : commit, NULL,
+ opt->nr, opt->patch_suffix, &filename);
+ snprintf(buffer, sizeof(buffer) - 1,
+ "\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;
+ strbuf_release(&filename);
+ }
+ *subject_p = subject;
+ *extra_headers_p = extra_headers;
+}
+
+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');
+ printf("%s%.*s%s%s", color, (int)(eol - bol), bol, reset,
+ *eol ? "\n" : "");
+ 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 strbuf gpg_output = STRBUF_INIT;
+ int status;
+
+ if (parse_signed_commit(commit->object.sha1, &payload, &signature) <= 0)
+ goto out;
+
+ status = verify_signed_buffer(payload.buf, payload.len,
+ signature.buf, signature.len,
+ &gpg_output);
+ if (status && !gpg_output.len)
+ strbuf_addstr(&gpg_output, "No signature\n");
+
+ show_sig_lines(opt, status, gpg_output.buf);
+
+ out:
+ strbuf_release(&gpg_output);
+ strbuf_release(&payload);
+ strbuf_release(&signature);
+}
+
+static int which_parent(const unsigned char *sha1, const struct commit *commit)
+{
+ int nth;
+ const struct commit_list *parent;
+
+ for (nth = 0, parent = commit->parents; parent; parent = parent->next) {
+ if (!hashcmp(parent->item->object.sha1, sha1))
+ 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 void show_one_mergetag(struct rev_info *opt,
+ struct commit_extra_header *extra,
+ struct commit *commit)
+{
+ unsigned char sha1[20];
+ struct tag *tag;
+ struct strbuf verify_message;
+ int status, nth;
+ size_t payload_size, gpg_message_offset;
+
+ hash_sha1_file(extra->value, extra->len, typename(OBJ_TAG), sha1);
+ tag = lookup_tag(sha1);
+ if (!tag)
+ return; /* error message already given */
+
+ strbuf_init(&verify_message, 256);
+ if (parse_tag_buffer(tag, extra->value, extra->len))
+ strbuf_addstr(&verify_message, "malformed mergetag\n");
+ else if (is_common_merge(commit) &&
+ !hashcmp(tag->tagged->sha1,
+ commit->parents->next->item->object.sha1))
+ strbuf_addf(&verify_message,
+ "merged tag '%s'\n", tag->tag);
+ else if ((nth = which_parent(tag->tagged->sha1, commit)) < 0)
+ strbuf_addf(&verify_message, "tag %s names a non-parent %s\n",
+ tag->tag, tag->tagged->sha1);
+ else
+ strbuf_addf(&verify_message,
+ "parent #%d, tagged '%s'\n", nth + 1, tag->tag);
+ gpg_message_offset = verify_message.len;
+
+ payload_size = parse_signature(extra->value, extra->len);
+ if ((extra->len <= payload_size) ||
+ (verify_signed_buffer(extra->value, payload_size,
+ extra->value + payload_size,
+ extra->len - payload_size,
+ &verify_message) &&
+ verify_message.len <= gpg_message_offset)) {
+ strbuf_addstr(&verify_message, "No signature\n");
+ status = -1;
+ }
+ else if (strstr(verify_message.buf + gpg_message_offset,
+ ": Good signature from "))
+ status = 0;
+ else
+ status = -1;
+
+ show_sig_lines(opt, status, verify_message.buf);
+ strbuf_release(&verify_message);
+}
+
+static void show_mergetag(struct rev_info *opt, struct commit *commit)
+{
+ struct commit_extra_header *extra, *to_free;
+
+ to_free = read_commit_extra_headers(commit, NULL);
+ for (extra = to_free; extra; extra = extra->next) {
+ if (strcmp(extra->key, "mergetag"))
+ continue; /* not a merge tag */
+ show_one_mergetag(opt, extra, commit);
+ }
+ free_commit_extra_headers(to_free);
+}
+
+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 : 40;
+ const char *extra_headers = opt->extra_headers;
+ struct pretty_print_context ctx = {0};
+
+ opt->loginfo = NULL;
+ ctx.show_notes = opt->show_notes;
+ if (!opt->verbose_header) {
+ graph_show_commit(opt->graph);
+
+ if (!opt->graph)
+ put_revision_mark(opt, commit);
+ fputs(find_unique_abbrev(commit->object.sha1, abbrev_commit), stdout);
+ if (opt->print_parents)
+ show_parents(commit, abbrev_commit);
+ if (opt->children.name)
+ show_children(opt, commit, abbrev_commit);
+ show_decorations(opt, commit);
+ if (opt->graph && !graph_is_commit_finished(opt->graph)) {
+ putchar('\n');
+ graph_show_remainder(opt->graph);
+ }
+ putchar(opt->diffopt.line_termination);
+ 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);
+ putchar(opt->diffopt.line_termination);
+ }
+ 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 (opt->commit_format == CMIT_FMT_EMAIL) {
+ log_write_email_headers(opt, commit, &ctx.subject, &extra_headers,
+ &ctx.need_8bit_cte);
+ } else if (opt->commit_format != CMIT_FMT_USERFORMAT) {
+ fputs(diff_get_color_opt(&opt->diffopt, DIFF_COMMIT), stdout);
+ if (opt->commit_format != CMIT_FMT_ONELINE)
+ fputs("commit ", stdout);
+
+ if (!opt->graph)
+ put_revision_mark(opt, commit);
+ fputs(find_unique_abbrev(commit->object.sha1, abbrev_commit),
+ stdout);
+ if (opt->print_parents)
+ show_parents(commit, abbrev_commit);
+ if (opt->children.name)
+ show_children(opt, commit, abbrev_commit);
+ if (parent)
+ printf(" (from %s)",
+ find_unique_abbrev(parent->object.sha1,
+ abbrev_commit));
+ show_decorations(opt, commit);
+ printf("%s", diff_get_color_opt(&opt->diffopt, DIFF_RESET));
+ if (opt->commit_format == CMIT_FMT_ONELINE) {
+ putchar(' ');
+ } else {
+ putchar('\n');
+ 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 (!commit->buffer)
+ return;
+
+ /*
+ * And then the pretty-printed message itself
+ */
+ if (ctx.need_8bit_cte >= 0)
+ ctx.need_8bit_cte = has_non_ascii(opt->add_signoff);
+ ctx.date_mode = opt->date_mode;
+ ctx.date_mode_explicit = opt->date_mode_explicit;
+ ctx.abbrev = opt->diffopt.abbrev;
+ ctx.after_subject = extra_headers;
+ ctx.preserve_subject = opt->preserve_subject;
+ ctx.reflog_info = opt->reflog_info;
+ ctx.fmt = opt->commit_format;
+ pretty_print_commit(&ctx, commit, &msgbuf);
+
+ if (opt->add_signoff)
+ append_signoff(&msgbuf, opt->add_signoff);
+ if (opt->show_log_size) {
+ printf("log size %i\n", (int)msgbuf.len);
+ graph_show_oneline(opt->graph);
+ }
+
+ /*
+ * Set opt->missing_newline if msgbuf doesn't
+ * end in a newline (including if it is empty)
+ */
+ if (!msgbuf.len || msgbuf.buf[msgbuf.len - 1] != '\n')
+ opt->missing_newline = 1;
+ else
+ opt->missing_newline = 0;
+
+ if (opt->graph)
+ graph_show_commit_msg(opt->graph, &msgbuf);
+ else
+ fwrite(msgbuf.buf, sizeof(char), msgbuf.len, stdout);
+ if (opt->use_terminator) {
+ if (!opt->missing_newline)
+ graph_show_padding(opt->graph);
+ putchar(opt->diffopt.line_termination);
+ }
+
+ strbuf_release(&msgbuf);
+}
+
+int log_tree_diff_flush(struct rev_info *opt)
+{
+ diffcore_std(&opt->diffopt);
+
+ if (diff_queue_is_empty()) {
+ int saved_fmt = opt->diffopt.output_format;
+ opt->diffopt.output_format = DIFF_FORMAT_NO_OUTPUT;
+ diff_flush(&opt->diffopt);
+ opt->diffopt.output_format = saved_fmt;
+ return 0;
+ }
+
+ if (opt->loginfo && !opt->no_commit_id) {
+ /* When showing a verbose header (i.e. log message),
+ * and not in --pretty=oneline format, we would want
+ * an extra newline between the end of log and the
+ * output for readability.
+ */
+ show_log(opt);
+ if ((opt->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT) &&
+ opt->verbose_header &&
+ opt->commit_format != CMIT_FMT_ONELINE) {
+ int pch = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
+ if (opt->diffopt.output_prefix) {
+ struct strbuf *msg = NULL;
+ msg = opt->diffopt.output_prefix(&opt->diffopt,
+ opt->diffopt.output_prefix_data);
+ fwrite(msg->buf, msg->len, 1, stdout);
+ }
+ if ((pch & opt->diffopt.output_format) == pch) {
+ printf("---");
+ }
+ putchar('\n');
+ }
+ }
+ diff_flush(&opt->diffopt);
+ return 1;
+}
+
+static int do_diff_combined(struct rev_info *opt, struct commit *commit)
+{
+ diff_tree_combined_merge(commit, opt->dense_combined_merges, opt);
+ return !opt->loginfo;
+}
+
+/*
+ * Show the diff of a commit.
+ *
+ * Return true if we printed any log info messages
+ */
+static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log_info *log)
+{
+ int showed_log;
+ struct commit_list *parents;
+ unsigned const char *sha1 = commit->object.sha1;
+
+ if (!opt->diff && !DIFF_OPT_TST(&opt->diffopt, EXIT_WITH_STATUS))
+ return 0;
+
+ /* Root commit? */
+ parents = commit->parents;
+ if (!parents) {
+ if (opt->show_root_diff) {
+ diff_root_tree_sha1(sha1, "", &opt->diffopt);
+ log_tree_diff_flush(opt);
+ }
+ return !opt->loginfo;
+ }
+
+ /* More than one parent? */
+ if (parents && parents->next) {
+ if (opt->ignore_merges)
+ return 0;
+ else if (opt->combine_merges)
+ return do_diff_combined(opt, commit);
+ else if (opt->first_parent_only) {
+ /*
+ * Generate merge log entry only for the first
+ * parent, showing summary diff of the others
+ * we merged _in_.
+ */
+ diff_tree_sha1(parents->item->object.sha1, sha1, "", &opt->diffopt);
+ log_tree_diff_flush(opt);
+ return !opt->loginfo;
+ }
+
+ /* If we show individual diffs, show the parent info */
+ log->parent = parents->item;
+ }
+
+ showed_log = 0;
+ for (;;) {
+ struct commit *parent = parents->item;
+
+ diff_tree_sha1(parent->object.sha1, sha1, "", &opt->diffopt);
+ log_tree_diff_flush(opt);
+
+ showed_log |= !opt->loginfo;
+
+ /* Set up the log info for the next parent, if any.. */
+ parents = parents->next;
+ if (!parents)
+ break;
+ log->parent = parents->item;
+ opt->loginfo = log;
+ }
+ return showed_log;
+}
+
+int log_tree_commit(struct rev_info *opt, struct commit *commit)
+{
+ struct log_info log;
+ int shown;
+
+ log.commit = commit;
+ log.parent = NULL;
+ opt->loginfo = &log;
+
+ shown = log_tree_diff(opt, commit, &log);
+ if (!shown && opt->loginfo && opt->always_show_header) {
+ log.parent = NULL;
+ show_log(opt);
+ shown = 1;
+ }
+ opt->loginfo = NULL;
+ maybe_flush_or_die(stdout, "stdout");
+ return shown;
+}
generated by cgit v0.10.2-6-g49f6 at 2024-04-23 22:45:33 (GMT)