1 files changed, 122 insertions, 76 deletions

diff --git a/log-tree.c b/log-tree.c
index bdf23c5f7b..52127427ff 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -1,6 +1,8 @@
 #include "cache.h"
 #include "config.h"
 #include "diff.h"
+#include "object-store.h"
+#include "repository.h"
 #include "commit.h"
 #include "tag.h"
 #include "graph.h"
@@ -12,6 +14,9 @@
 #include "gpg-interface.h"
 #include "sequencer.h"
 #include "line-log.h"
+#include "help.h"
+#include "interdiff.h"
+#include "range-diff.h"
 
 static struct decoration name_decoration = { "object names" };
 static int decoration_loaded;
@@ -27,6 +32,15 @@ static char decoration_colors[][COLOR_MAXLEN] = {
 	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(int decorate_use_color, enum decoration_type ix)
 {
 	if (want_color(decorate_use_color))
@@ -34,34 +48,11 @@ static const char *decorate_get_color(int decorate_use_color, enum decoration_ty
 	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;
-}
+define_list_config_array(color_decorate_slots);
 
 int parse_decorate_color_config(const char *var, const char *slot_name, const char *value)
 {
-	int slot = parse_decorate_color_slot(slot_name);
+	int slot = LOOKUP_CONFIG(color_decorate_slots, slot_name);
 	if (slot < 0)
 		return 0;
 	if (!value)
@@ -86,6 +77,7 @@ void add_name_decoration(enum decoration_type type, const char *name, struct obj
 
 const struct name_decoration *get_name_decoration(const struct object *obj)
 {
+	load_ref_decorations(NULL, DECORATE_SHORT_REFS);
 	return lookup_decoration(&name_decoration, obj);
 }
 
@@ -103,20 +95,20 @@ static int add_ref_decoration(const char *refname, const struct object_id *oid,
 
 	if (starts_with(refname, git_replace_ref_base)) {
 		struct object_id original_oid;
-		if (!check_replace_refs)
+		if (!read_replace_refs)
 			return 0;
 		if (get_oid_hex(refname + strlen(git_replace_ref_base),
 				&original_oid)) {
 			warning("invalid replace ref %s", refname);
 			return 0;
 		}
-		obj = parse_object(&original_oid);
+		obj = parse_object(the_repository, &original_oid);
 		if (obj)
 			add_name_decoration(DECORATION_GRAFTED, "replaced", obj);
 		return 0;
 	}
 
-	obj = parse_object(oid);
+	obj = parse_object(the_repository, oid);
 	if (!obj)
 		return 0;
 
@@ -137,7 +129,7 @@ static int add_ref_decoration(const char *refname, const struct object_id *oid,
 		if (!obj)
 			break;
 		if (!obj->parsed)
-			parse_object(&obj->oid);
+			parse_object(the_repository, &obj->oid);
 		add_name_decoration(DECORATION_REF_TAG, refname, obj);
 	}
 	return 0;
@@ -145,7 +137,7 @@ static int add_ref_decoration(const char *refname, const struct object_id *oid,
 
 static int add_graft_decoration(const struct commit_graft *graft, void *cb_data)
 {
-	struct commit *commit = lookup_commit(&graft->oid);
+	struct commit *commit = lookup_commit(the_repository, &graft->oid);
 	if (!commit)
 		return 0;
 	add_name_decoration(DECORATION_GRAFTED, "grafted", &commit->object);
@@ -177,7 +169,7 @@ 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", find_unique_abbrev(parent->object.oid.hash, abbrev));
+		fprintf(file, " %s", find_unique_abbrev(&parent->object.oid, abbrev));
 	}
 }
 
@@ -185,7 +177,7 @@ static void show_children(struct rev_info *opt, struct commit *commit, int abbre
 {
 	struct commit_list *p = lookup_decoration(&opt->children, &commit->object);
 	for ( ; p; p = p->next) {
-		fprintf(opt->diffopt.file, " %s", find_unique_abbrev(p->item->object.oid.hash, abbrev));
+		fprintf(opt->diffopt.file, " %s", find_unique_abbrev(&p->item->object.oid, abbrev));
 	}
 }
 
@@ -295,8 +287,12 @@ void show_decorations(struct rev_info *opt, struct commit *commit)
 {
 	struct strbuf sb = STRBUF_INIT;
 
-	if (opt->show_source && commit->util)
-		fprintf(opt->diffopt.file, "\t%s", (char *) commit->util);
+	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);
@@ -362,7 +358,8 @@ void fmt_output_email_subject(struct strbuf *sb, struct rev_info *opt)
 
 void log_write_email_headers(struct rev_info *opt, struct commit *commit,
 			     const char **extra_headers_p,
-			     int *need_8bit_cte_p)
+			     int *need_8bit_cte_p,
+			     int maybe_multipart)
 {
 	const char *extra_headers = opt->extra_headers;
 	const char *name = oid_to_hex(opt->zero_commit ?
@@ -385,12 +382,16 @@ void log_write_email_headers(struct rev_info *opt, struct commit *commit,
 			       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];
+	if (opt->mime_boundary && maybe_multipart) {
+		static struct strbuf subject_buffer = STRBUF_INIT;
+		static struct strbuf buffer = STRBUF_INIT;
 		struct strbuf filename =  STRBUF_INIT;
 		*need_8bit_cte_p = -1; /* NEVER */
-		snprintf(subject_buffer, sizeof(subject_buffer) - 1,
+
+		strbuf_reset(&subject_buffer);
+		strbuf_reset(&buffer);
+
+		strbuf_addf(&subject_buffer,
 			 "%s"
 			 "MIME-Version: 1.0\n"
 			 "Content-Type: multipart/mixed;"
@@ -405,13 +406,13 @@ void log_write_email_headers(struct rev_info *opt, struct commit *commit,
 			 extra_headers ? extra_headers : "",
 			 mime_boundary_leader, opt->mime_boundary,
 			 mime_boundary_leader, opt->mime_boundary);
-		extra_headers = subject_buffer;
+		extra_headers = subject_buffer.buf;
 
 		if (opt->numbered_files)
 			strbuf_addf(&filename, "%d", opt->nr);
 		else
 			fmt_output_commit(&filename, commit, opt);
-		snprintf(buffer, sizeof(buffer) - 1,
+		strbuf_addf(&buffer,
 			 "\n--%s%s\n"
 			 "Content-Type: text/x-patch;"
 			 " name=\"%s\"\n"
@@ -422,7 +423,7 @@ void log_write_email_headers(struct rev_info *opt, struct commit *commit,
 			 filename.buf,
 			 opt->no_inline ? "attachment" : "inline",
 			 filename.buf);
-		opt->diffopt.stat_sep = buffer;
+		opt->diffopt.stat_sep = buffer.buf;
 		strbuf_release(&filename);
 	}
 	*extra_headers_p = extra_headers;
@@ -474,7 +475,7 @@ static int which_parent(const struct object_id *oid, const struct commit *commit
 	const struct commit_list *parent;
 
 	for (nth = 0, parent = commit->parents; parent; parent = parent->next) {
-		if (!oidcmp(&parent->item->object.oid, oid))
+		if (oideq(&parent->item->object.oid, oid))
 			return nth;
 		nth++;
 	}
@@ -488,9 +489,9 @@ static int is_common_merge(const struct commit *commit)
 		&& !commit->parents->next->next);
 }
 
-static void show_one_mergetag(struct commit *commit,
-			      struct commit_extra_header *extra,
-			      void *data)
+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;
@@ -499,22 +500,23 @@ static void show_one_mergetag(struct commit *commit,
 	int status, nth;
 	size_t payload_size, gpg_message_offset;
 
-	hash_object_file(extra->value, extra->len, type_name(OBJ_TAG), &oid);
-	tag = lookup_tag(&oid);
+	hash_object_file(the_hash_algo, extra->value, extra->len,
+			 type_name(OBJ_TAG), &oid);
+	tag = lookup_tag(the_repository, &oid);
 	if (!tag)
-		return; /* error message already given */
+		return -1; /* error message already given */
 
 	strbuf_init(&verify_message, 256);
-	if (parse_tag_buffer(tag, extra->value, extra->len))
+	if (parse_tag_buffer(the_repository, tag, extra->value, extra->len))
 		strbuf_addstr(&verify_message, "malformed mergetag\n");
 	else if (is_common_merge(commit) &&
-		 !oidcmp(&tag->tagged->oid,
-			  &commit->parents->next->item->object.oid))
+		 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, tag->tagged->oid.hash);
+				    tag->tag, oid_to_hex(&tag->tagged->oid));
 	else
 		strbuf_addf(&verify_message,
 			    "parent #%d, tagged '%s'\n", nth + 1, tag->tag);
@@ -536,11 +538,22 @@ static void show_one_mergetag(struct commit *commit,
 
 	show_sig_lines(opt, status, verify_message.buf);
 	strbuf_release(&verify_message);
+	return 0;
+}
+
+static int show_mergetag(struct rev_info *opt, struct commit *commit)
+{
+	return for_each_mergetag(show_one_mergetag, commit, opt);
 }
 
-static void show_mergetag(struct rev_info *opt, struct commit *commit)
+static void next_commentary_block(struct rev_info *opt, struct strbuf *sb)
 {
-	for_each_mergetag(show_one_mergetag, commit, opt);
+	const char *x = opt->shown_dashes ? "\n" : "---\n";
+	if (sb)
+		strbuf_addstr(sb, x);
+	else
+		fputs(x, opt->diffopt.file);
+	opt->shown_dashes = 1;
 }
 
 void show_log(struct rev_info *opt)
@@ -548,7 +561,7 @@ 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 : GIT_SHA1_HEXSZ;
+	int abbrev_commit = opt->abbrev_commit ? opt->abbrev : the_hash_algo->hexsz;
 	const char *extra_headers = opt->extra_headers;
 	struct pretty_print_context ctx = {0};
 
@@ -558,7 +571,7 @@ void show_log(struct rev_info *opt)
 
 		if (!opt->graph)
 			put_revision_mark(opt, commit);
-		fputs(find_unique_abbrev(commit->object.oid.hash, abbrev_commit), opt->diffopt.file);
+		fputs(find_unique_abbrev(&commit->object.oid, abbrev_commit), opt->diffopt.file);
 		if (opt->print_parents)
 			show_parents(commit, abbrev_commit, opt->diffopt.file);
 		if (opt->children.name)
@@ -610,7 +623,7 @@ void show_log(struct rev_info *opt)
 
 	if (cmit_fmt_is_mail(opt->commit_format)) {
 		log_write_email_headers(opt, commit, &extra_headers,
-					&ctx.need_8bit_cte);
+					&ctx.need_8bit_cte, 1);
 		ctx.rev = opt;
 		ctx.print_email_subject = 1;
 	} else if (opt->commit_format != CMIT_FMT_USERFORMAT) {
@@ -620,7 +633,8 @@ void show_log(struct rev_info *opt)
 
 		if (!opt->graph)
 			put_revision_mark(opt, commit);
-		fputs(find_unique_abbrev(commit->object.oid.hash, abbrev_commit),
+		fputs(find_unique_abbrev(&commit->object.oid,
+					 abbrev_commit),
 		      opt->diffopt.file);
 		if (opt->print_parents)
 			show_parents(commit, abbrev_commit, opt->diffopt.file);
@@ -628,8 +642,7 @@ void show_log(struct rev_info *opt)
 			show_children(opt, commit, abbrev_commit);
 		if (parent)
 			fprintf(opt->diffopt.file, " (from %s)",
-			       find_unique_abbrev(parent->object.oid.hash,
-						  abbrev_commit));
+			       find_unique_abbrev(&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) {
@@ -666,9 +679,7 @@ void show_log(struct rev_info *opt)
 		raw = (opt->commit_format == CMIT_FMT_USERFORMAT);
 		format_display_notes(&commit->object.oid, &notebuf,
 				     get_log_output_encoding(), raw);
-		ctx.notes_message = notebuf.len
-			? strbuf_detach(&notebuf, NULL)
-			: xcalloc(1, 1);
+		ctx.notes_message = strbuf_detach(&notebuf, NULL);
 	}
 
 	/*
@@ -676,8 +687,7 @@ void show_log(struct rev_info *opt)
 	 */
 	if (ctx.need_8bit_cte >= 0 && opt->add_signoff)
 		ctx.need_8bit_cte =
-			has_non_ascii(fmt_name(getenv("GIT_COMMITTER_NAME"),
-					       getenv("GIT_COMMITTER_EMAIL")));
+			has_non_ascii(fmt_name(WANT_COMMITTER_IDENT));
 	ctx.date_mode = opt->date_mode;
 	ctx.date_mode_explicit = opt->date_mode_explicit;
 	ctx.abbrev = opt->diffopt.abbrev;
@@ -689,6 +699,7 @@ void show_log(struct rev_info *opt)
 	ctx.color = opt->diffopt.use_color;
 	ctx.expand_tabs_in_log = opt->expand_tabs_in_log;
 	ctx.output_encoding = get_log_output_encoding();
+	ctx.rev = opt;
 	if (opt->from_ident.mail_begin && opt->from_ident.name_begin)
 		ctx.from_ident = &opt->from_ident;
 	if (opt->graph)
@@ -700,10 +711,8 @@ void show_log(struct rev_info *opt)
 
 	if ((ctx.fmt != CMIT_FMT_USERFORMAT) &&
 	    ctx.notes_message && *ctx.notes_message) {
-		if (cmit_fmt_is_mail(ctx.fmt)) {
-			strbuf_addstr(&msgbuf, "---\n");
-			opt->shown_dashes = 1;
-		}
+		if (cmit_fmt_is_mail(ctx.fmt))
+			next_commentary_block(opt, &msgbuf);
 		strbuf_addstr(&msgbuf, ctx.notes_message);
 	}
 
@@ -730,6 +739,42 @@ void show_log(struct rev_info *opt)
 
 	strbuf_release(&msgbuf);
 	free(ctx.notes_message);
+
+	if (cmit_fmt_is_mail(ctx.fmt) && opt->idiff_oid1) {
+		struct diff_queue_struct dq;
+
+		memcpy(&dq, &diff_queued_diff, sizeof(diff_queued_diff));
+		DIFF_QUEUE_CLEAR(&diff_queued_diff);
+
+		next_commentary_block(opt, NULL);
+		fprintf_ln(opt->diffopt.file, "%s", opt->idiff_title);
+		show_interdiff(opt, 2);
+
+		memcpy(&diff_queued_diff, &dq, sizeof(diff_queued_diff));
+	}
+
+	if (cmit_fmt_is_mail(ctx.fmt) && opt->rdiff1) {
+		struct diff_queue_struct dq;
+		struct diff_options opts;
+
+		memcpy(&dq, &diff_queued_diff, sizeof(diff_queued_diff));
+		DIFF_QUEUE_CLEAR(&diff_queued_diff);
+
+		next_commentary_block(opt, NULL);
+		fprintf_ln(opt->diffopt.file, "%s", opt->rdiff_title);
+		/*
+		 * Pass minimum required diff-options to range-diff; others
+		 * can be added later if deemed desirable.
+		 */
+		diff_setup(&opts);
+		opts.file = opt->diffopt.file;
+		opts.use_color = opt->diffopt.use_color;
+		diff_setup_done(&opts);
+		show_range_diff(opt->rdiff1, opt->rdiff2,
+				opt->creation_factor, 1, &opts, NULL);
+
+		memcpy(&diff_queued_diff, &dq, sizeof(diff_queued_diff));
+	}
 }
 
 int log_tree_diff_flush(struct rev_info *opt)
@@ -767,9 +812,10 @@ int log_tree_diff_flush(struct rev_info *opt)
 
 			/*
 			 * We may have shown three-dashes line early
-			 * between notes and the log message, in which
-			 * case we only want a blank line after the
-			 * notes without (an extra) three-dashes line.
+			 * between generated commentary (notes, etc.)
+			 * and the log message, in which case we only
+			 * want a blank line after the commentary
+			 * without (an extra) three-dashes line.
 			 * Otherwise, we show the three-dashes line if
 			 * we are showing the patch with diffstat, but
 			 * in that case, there is no extra blank line
@@ -806,7 +852,7 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
 		return 0;
 
 	parse_commit_or_die(commit);
-	oid = &commit->tree->object.oid;
+	oid = get_commit_tree_oid(commit);
 
 	/* Root commit? */
 	parents = get_saved_parents(opt, commit);
@@ -831,7 +877,7 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
 			 * we merged _in_.
 			 */
 			parse_commit_or_die(parents->item);
-			diff_tree_oid(&parents->item->tree->object.oid,
+			diff_tree_oid(get_commit_tree_oid(parents->item),
 				      oid, "", &opt->diffopt);
 			log_tree_diff_flush(opt);
 			return !opt->loginfo;
@@ -846,7 +892,7 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
 		struct commit *parent = parents->item;
 
 		parse_commit_or_die(parent);
-		diff_tree_oid(&parent->tree->object.oid,
+		diff_tree_oid(get_commit_tree_oid(parent),
 			      oid, "", &opt->diffopt);
 		log_tree_diff_flush(opt);