git: update to v2.10.0

Upstream continues to replace unsigned char *sha1 with struct
object_id old_oid. This makes the required changes.

The git lib has its own main function now. Rename our main function
to cmd_main, it is called from main then.

9 files changed, 62 insertions, 62 deletions

diff --git a/Makefile b/Makefile
index 9d067d4..821cfb3 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ htmldir = $(docdir)
 pdfdir = $(docdir)
 mandir = $(prefix)/share/man
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 2.9.1
+GIT_VER = 2.10.0
 GIT_URL = https://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.gz
 INSTALL = install
 COPYTREE = cp -r
diff --git a/cgit.c b/cgit.c
index 9427c4a..2f29aa6 100644
--- a/cgit.c
+++ b/cgit.c
@@ -1026,7 +1026,7 @@ static int calc_ttl(void)
 	return ctx.cfg.cache_repo_ttl;
 }
 
-int main(int argc, const char **argv)
+int cmd_main(int argc, const char **argv)
 {
 	const char *path;
 	int err, ttl;
diff --git a/cgit.h b/cgit.h
index 325432b..f34395c 100644
--- a/cgit.h
+++ b/cgit.h
@@ -348,14 +348,14 @@ extern void *cgit_free_commitinfo(struct commitinfo *info);
 void cgit_diff_tree_cb(struct diff_queue_struct *q,
 		       struct diff_options *options, void *data);
 
-extern int cgit_diff_files(const unsigned char *old_sha1,
-			   const unsigned char *new_sha1,
+extern int cgit_diff_files(const struct object_id *old_oid,
+			   const struct object_id *new_oid,
 			   unsigned long *old_size, unsigned long *new_size,
 			   int *binary, int context, int ignorews,
 			   linediff_fn fn);
 
-extern void cgit_diff_tree(const unsigned char *old_sha1,
-			   const unsigned char *new_sha1,
+extern void cgit_diff_tree(const struct object_id *old_oid,
+			   const struct object_id *new_oid,
 			   filepair_fn fn, const char *prefix, int ignorews);
 
 extern void cgit_diff_commit(struct commit *commit, filepair_fn fn,
diff --git a/git b/git
-Subproject 5c9159de87e41cf14ec5f2132afb5a06f35c26b
+Subproject 6ebdac1bab966b720d776aa43ca188fe378b1f4
diff --git a/shared.c b/shared.c
index a63633b..a48eea6 100644
--- a/shared.c
+++ b/shared.c
@@ -263,15 +263,15 @@ void cgit_diff_tree_cb(struct diff_queue_struct *q,
 	}
 }
 
-static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
+static int load_mmfile(mmfile_t *file, const struct object_id *oid)
 {
 	enum object_type type;
 
-	if (is_null_sha1(sha1)) {
+	if (is_null_oid(oid)) {
 		file->ptr = (char *)"";
 		file->size = 0;
 	} else {
-		file->ptr = read_sha1_file(sha1, &type,
+		file->ptr = read_sha1_file(oid->hash, &type,
 		                           (unsigned long *)&file->size);
 	}
 	return 1;
@@ -322,8 +322,8 @@ static int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
 	return 0;
 }
 
-int cgit_diff_files(const unsigned char *old_sha1,
-		    const unsigned char *new_sha1, unsigned long *old_size,
+int cgit_diff_files(const struct object_id *old_oid,
+		    const struct object_id *new_oid, unsigned long *old_size,
 		    unsigned long *new_size, int *binary, int context,
 		    int ignorews, linediff_fn fn)
 {
@@ -332,7 +332,7 @@ int cgit_diff_files(const unsigned char *old_sha1,
 	xdemitconf_t emit_params;
 	xdemitcb_t emit_cb;
 
-	if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
+	if (!load_mmfile(&file1, old_oid) || !load_mmfile(&file2, new_oid))
 		return 1;
 
 	*old_size = file1.size;
@@ -366,8 +366,8 @@ int cgit_diff_files(const unsigned char *old_sha1,
 	return 0;
 }
 
-void cgit_diff_tree(const unsigned char *old_sha1,
-		    const unsigned char *new_sha1,
+void cgit_diff_tree(const struct object_id *old_oid,
+		    const struct object_id *new_oid,
 		    filepair_fn fn, const char *prefix, int ignorews)
 {
 	struct diff_options opt;
@@ -391,21 +391,21 @@ void cgit_diff_tree(const unsigned char *old_sha1,
 	}
 	diff_setup_done(&opt);
 
-	if (old_sha1 && !is_null_sha1(old_sha1))
-		diff_tree_sha1(old_sha1, new_sha1, "", &opt);
+	if (old_oid && !is_null_oid(old_oid))
+		diff_tree_sha1(old_oid->hash, new_oid->hash, "", &opt);
 	else
-		diff_root_tree_sha1(new_sha1, "", &opt);
+		diff_root_tree_sha1(new_oid->hash, "", &opt);
 	diffcore_std(&opt);
 	diff_flush(&opt);
 }
 
 void cgit_diff_commit(struct commit *commit, filepair_fn fn, const char *prefix)
 {
-	unsigned char *old_sha1 = NULL;
+	const struct object_id *old_oid = NULL;
 
 	if (commit->parents)
-		old_sha1 = commit->parents->item->object.oid.hash;
-	cgit_diff_tree(old_sha1, commit->object.oid.hash, fn, prefix,
+		old_oid = &commit->parents->item->object.oid;
+	cgit_diff_tree(old_oid, &commit->object.oid, fn, prefix,
 		       ctx.qry.ignorews);
 }
 
diff --git a/ui-diff.c b/ui-diff.c
index edee793..173d351 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -12,8 +12,8 @@
 #include "ui-shared.h"
 #include "ui-ssdiff.h"
 
-unsigned char old_rev_sha1[20];
-unsigned char new_rev_sha1[20];
+struct object_id old_rev_oid[1];
+struct object_id new_rev_oid[1];
 
 static int files, slots;
 static int total_adds, total_rems, max_changes;
@@ -21,8 +21,8 @@ static int lines_added, lines_removed;
 
 static struct fileinfo {
 	char status;
-	unsigned char old_sha1[20];
-	unsigned char new_sha1[20];
+	struct object_id old_oid[1];
+	struct object_id new_oid[1];
 	unsigned short old_mode;
 	unsigned short new_mode;
 	char *old_path;
@@ -83,15 +83,15 @@ static void print_fileinfo(struct fileinfo *info)
 
 	html("<tr>");
 	htmlf("<td class='mode'>");
-	if (is_null_sha1(info->new_sha1)) {
+	if (is_null_oid(info->new_oid)) {
 		cgit_print_filemode(info->old_mode);
 	} else {
 		cgit_print_filemode(info->new_mode);
 	}
 
 	if (info->old_mode != info->new_mode &&
-	    !is_null_sha1(info->old_sha1) &&
-	    !is_null_sha1(info->new_sha1)) {
+	    !is_null_oid(info->old_oid) &&
+	    !is_null_oid(info->new_oid)) {
 		html("<span class='modechange'>[");
 		cgit_print_filemode(info->old_mode);
 		html("]</span>");
@@ -160,7 +160,7 @@ static void inspect_filepair(struct diff_filepair *pair)
 	files++;
 	lines_added = 0;
 	lines_removed = 0;
-	cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size, &new_size,
+	cgit_diff_files(&pair->one->oid, &pair->two->oid, &old_size, &new_size,
 			&binary, 0, ctx.qry.ignorews, count_diff_lines);
 	if (files >= slots) {
 		if (slots == 0)
@@ -170,8 +170,8 @@ static void inspect_filepair(struct diff_filepair *pair)
 		items = xrealloc(items, slots * sizeof(struct fileinfo));
 	}
 	items[files-1].status = pair->status;
-	hashcpy(items[files-1].old_sha1, pair->one->sha1);
-	hashcpy(items[files-1].new_sha1, pair->two->sha1);
+	oidcpy(items[files-1].old_oid, &pair->one->oid);
+	oidcpy(items[files-1].new_oid, &pair->two->oid);
 	items[files-1].old_mode = pair->one->mode;
 	items[files-1].new_mode = pair->two->mode;
 	items[files-1].old_path = xstrdup(pair->one->path);
@@ -187,8 +187,8 @@ static void inspect_filepair(struct diff_filepair *pair)
 	total_rems += lines_removed;
 }
 
-static void cgit_print_diffstat(const unsigned char *old_sha1,
-				const unsigned char *new_sha1,
+static void cgit_print_diffstat(const struct object_id *old_oid,
+				const struct object_id *new_oid,
 				const char *prefix)
 {
 	int i;
@@ -204,7 +204,7 @@ static void cgit_print_diffstat(const unsigned char *old_sha1,
 	html("</div>");
 	html("<table summary='diffstat' class='diffstat'>");
 	max_changes = 0;
-	cgit_diff_tree(old_sha1, new_sha1, inspect_filepair, prefix,
+	cgit_diff_tree(old_oid, new_oid, inspect_filepair, prefix,
 		       ctx.qry.ignorews);
 	for (i = 0; i<files; i++)
 		print_fileinfo(&items[i]);
@@ -238,8 +238,8 @@ static void print_line(char *line, int len)
 	line[len-1] = c;
 }
 
-static void header(unsigned char *sha1, char *path1, int mode1,
-		   unsigned char *sha2, char *path2, int mode2)
+static void header(const struct object_id *oid1, char *path1, int mode1,
+		   const struct object_id *oid2, char *path2, int mode2)
 {
 	char *abbrev1, *abbrev2;
 	int subproject;
@@ -258,8 +258,8 @@ static void header(unsigned char *sha1, char *path1, int mode1,
 		htmlf("<br/>deleted file mode %.6o", mode1);
 
 	if (!subproject) {
-		abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
-		abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
+		abbrev1 = xstrdup(find_unique_abbrev(oid1->hash, DEFAULT_ABBREV));
+		abbrev2 = xstrdup(find_unique_abbrev(oid2->hash, DEFAULT_ABBREV));
 		htmlf("<br/>index %s..%s", abbrev1, abbrev2);
 		free(abbrev1);
 		free(abbrev2);
@@ -268,24 +268,24 @@ static void header(unsigned char *sha1, char *path1, int mode1,
 			if (mode2 != mode1)
 				htmlf("..%.6o", mode2);
 		}
-		if (is_null_sha1(sha1)) {
+		if (is_null_oid(oid1)) {
 			path1 = "dev/null";
 			html("<br/>--- /");
 		} else
 			html("<br/>--- a/");
 		if (mode1 != 0)
 			cgit_tree_link(path1, NULL, NULL, ctx.qry.head,
-				       sha1_to_hex(old_rev_sha1), path1);
+				       oid_to_hex(old_rev_oid), path1);
 		else
 			html_txt(path1);
-		if (is_null_sha1(sha2)) {
+		if (is_null_oid(oid2)) {
 			path2 = "dev/null";
 			html("<br/>+++ /");
 		} else
 			html("<br/>+++ b/");
 		if (mode2 != 0)
 			cgit_tree_link(path2, NULL, NULL, ctx.qry.head,
-				       sha1_to_hex(new_rev_sha1), path2);
+				       oid_to_hex(new_rev_oid), path2);
 		else
 			html_txt(path2);
 	}
@@ -307,20 +307,20 @@ static void filepair_cb(struct diff_filepair *pair)
 		cgit_ssdiff_header_begin();
 		print_line_fn = cgit_ssdiff_line_cb;
 	}
-	header(pair->one->sha1, pair->one->path, pair->one->mode,
-	       pair->two->sha1, pair->two->path, pair->two->mode);
+	header(&pair->one->oid, pair->one->path, pair->one->mode,
+	       &pair->two->oid, pair->two->path, pair->two->mode);
 	if (use_ssdiff)
 		cgit_ssdiff_header_end();
 	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
 		if (S_ISGITLINK(pair->one->mode))
-			print_line_fn(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
+			print_line_fn(fmt("-Subproject %s", oid_to_hex(&pair->one->oid)), 52);
 		if (S_ISGITLINK(pair->two->mode))
-			print_line_fn(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
+			print_line_fn(fmt("+Subproject %s", oid_to_hex(&pair->two->oid)), 52);
 		if (use_ssdiff)
 			cgit_ssdiff_footer();
 		return;
 	}
-	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
+	if (cgit_diff_files(&pair->one->oid, &pair->two->oid, &old_size,
 			    &new_size, &binary, ctx.qry.context,
 			    ctx.qry.ignorews, print_line_fn))
 		cgit_print_error("Error running diff");
@@ -402,36 +402,36 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 
 	if (!new_rev)
 		new_rev = ctx.qry.head;
-	if (get_sha1(new_rev, new_rev_sha1)) {
+	if (get_oid(new_rev, new_rev_oid)) {
 		cgit_print_error_page(404, "Not found",
 			"Bad object name: %s", new_rev);
 		return;
 	}
-	commit = lookup_commit_reference(new_rev_sha1);
+	commit = lookup_commit_reference(new_rev_oid->hash);
 	if (!commit || parse_commit(commit)) {
 		cgit_print_error_page(404, "Not found",
-			"Bad commit: %s", sha1_to_hex(new_rev_sha1));
+			"Bad commit: %s", oid_to_hex(new_rev_oid));
 		return;
 	}
 	new_tree_sha1 = commit->tree->object.oid.hash;
 
 	if (old_rev) {
-		if (get_sha1(old_rev, old_rev_sha1)) {
+		if (get_oid(old_rev, old_rev_oid)) {
 			cgit_print_error_page(404, "Not found",
 				"Bad object name: %s", old_rev);
 			return;
 		}
 	} else if (commit->parents && commit->parents->item) {
-		hashcpy(old_rev_sha1, commit->parents->item->object.oid.hash);
+		oidcpy(old_rev_oid, &commit->parents->item->object.oid);
 	} else {
-		hashclr(old_rev_sha1);
+		oidclr(old_rev_oid);
 	}
 
-	if (!is_null_sha1(old_rev_sha1)) {
-		commit2 = lookup_commit_reference(old_rev_sha1);
+	if (!is_null_oid(old_rev_oid)) {
+		commit2 = lookup_commit_reference(old_rev_oid->hash);
 		if (!commit2 || parse_commit(commit2)) {
 			cgit_print_error_page(404, "Not found",
-				"Bad commit: %s", sha1_to_hex(old_rev_sha1));
+				"Bad commit: %s", oid_to_hex(old_rev_oid));
 			return;
 		}
 		old_tree_sha1 = commit2->tree->object.oid.hash;
@@ -479,7 +479,7 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 	if (difftype == DIFF_STATONLY)
 		ctx.qry.difftype = ctx.cfg.difftype;
 
-	cgit_print_diffstat(old_rev_sha1, new_rev_sha1, prefix);
+	cgit_print_diffstat(old_rev_oid, new_rev_oid, prefix);
 
 	if (difftype == DIFF_STATONLY)
 		return;
@@ -490,7 +490,7 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 		html("<table summary='diff' class='diff'>");
 		html("<tr><td>");
 	}
-	cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix,
+	cgit_diff_tree(old_rev_oid, new_rev_oid, filepair_cb, prefix,
 		       ctx.qry.ignorews);
 	if (!use_ssdiff)
 		html("</td></tr>");
diff --git a/ui-diff.h b/ui-diff.h
index 382e8c5..39264a1 100644
--- a/ui-diff.h
+++ b/ui-diff.h
@@ -9,7 +9,7 @@ extern void cgit_print_diff(const char *new_hex, const char *old_hex,
 extern struct diff_filespec *cgit_get_current_old_file(void);
 extern struct diff_filespec *cgit_get_current_new_file(void);
 
-extern unsigned char old_rev_sha1[20];
-extern unsigned char new_rev_sha1[20];
+extern struct object_id old_rev_oid[1];
+extern struct object_id new_rev_oid[1];
 
 #endif /* UI_DIFF_H */
diff --git a/ui-log.c b/ui-log.c
index c97b8e0..a31ff7c 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -49,7 +49,7 @@ static void inspect_files(struct diff_filepair *pair)
 
 	files++;
 	if (ctx.repo->enable_log_linecount)
-		cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
+		cgit_diff_files(&pair->one->oid, &pair->two->oid, &old_size,
 				&new_size, &binary, 0, ctx.qry.ignorews,
 				count_lines);
 }
diff --git a/ui-ssdiff.c b/ui-ssdiff.c
index d183d40..16c812f 100644
--- a/ui-ssdiff.c
+++ b/ui-ssdiff.c
@@ -229,7 +229,7 @@ static void print_ssdiff_line(char *class,
 	if (old_line_no > 0) {
 		struct diff_filespec *old_file = cgit_get_current_old_file();
 		char *lineno_str = fmt("n%d", old_line_no);
-		char *id_str = fmt("id=%s#%s", is_null_sha1(old_file->sha1)?"HEAD":sha1_to_hex(old_rev_sha1), lineno_str);
+		char *id_str = fmt("id=%s#%s", is_null_oid(&old_file->oid)?"HEAD":oid_to_hex(old_rev_oid), lineno_str);
 		char *fileurl = cgit_fileurl(ctx.repo->url, "tree", old_file->path, id_str);
 		html("<td class='lineno'><a href='");
 		html(fileurl);
@@ -252,7 +252,7 @@ static void print_ssdiff_line(char *class,
 	if (new_line_no > 0) {
 		struct diff_filespec *new_file = cgit_get_current_new_file();
 		char *lineno_str = fmt("n%d", new_line_no);
-		char *id_str = fmt("id=%s#%s", is_null_sha1(new_file->sha1)?"HEAD":sha1_to_hex(new_rev_sha1), lineno_str);
+		char *id_str = fmt("id=%s#%s", is_null_oid(&new_file->oid)?"HEAD":oid_to_hex(new_rev_oid), lineno_str);
 		char *fileurl = cgit_fileurl(ctx.repo->url, "tree", new_file->path, id_str);
 		html("<td class='lineno'><a href='");
 		html(fileurl);