Update to libgit 1.5.2-rc2

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

9 files changed, 50 insertions, 837 deletions

diff --git a/Makefile b/Makefile
index b1c3a4e..24c3963 100644
--- a/Makefile
+++ b/Makefile
@@ -3,10 +3,12 @@ CGIT_VERSION = 0.2
 prefix = /var/www/htdocs/cgit
 gitsrc = ../git
 
+SHA1_HEADER = <openssl/sha.h>
+
 CACHE_ROOT = /var/cache/cgit
 EXTLIBS = $(gitsrc)/libgit.a $(gitsrc)/xdiff/lib.a -lz -lcrypto
 OBJECTS = shared.o cache.o parsing.o html.o ui-shared.o ui-repolist.o \
-	ui-summary.o ui-log.o ui-view.c ui-tree.c ui-commit.c ui-diff.o \
+	ui-summary.o ui-log.o ui-view.o ui-tree.o ui-commit.o ui-diff.o \
 	ui-snapshot.o
 
 CFLAGS += -Wall
@@ -15,6 +17,8 @@ ifdef DEBUG
 	CFLAGS += -g
 endif
 
+CFLAGS += -I$(gitsrc) -DSHA1_HEADER='$(SHA1_HEADER)'
+
 all: cgit
 
 install: all clean-cache
@@ -22,13 +26,11 @@ install: all clean-cache
 	install cgit $(prefix)/cgit.cgi
 	install cgit.css $(prefix)/cgit.css
 
-cgit: cgit.c cgit.h git.h $(OBJECTS) $(gitsrc)/libgit.a
+cgit: cgit.c cgit.h $(OBJECTS) $(gitsrc)/libgit.a
 	$(CC) $(CFLAGS) -DCGIT_VERSION='"$(CGIT_VERSION)"' cgit.c -o cgit \
 		$(OBJECTS) $(EXTLIBS)
 
-$(OBJECTS): cgit.h git.h
-
-ui-diff.o: xdiff.h
+$(OBJECTS): cgit.h
 
 $(gitsrc)/libgit.a:
 	$(MAKE) -C $(gitsrc)
diff --git a/cgit.h b/cgit.h
index 6e95673..222c9c2 100644
--- a/cgit.h
+++ b/cgit.h
@@ -1,10 +1,22 @@
 #ifndef CGIT_H
 #define CGIT_H
 
-#include "git.h"
-#include <openssl/sha.h>
-#include <ctype.h>
-#include <sched.h>
+
+#include <git-compat-util.h>
+#include <cache.h>
+#include <grep.h>
+#include <object.h>
+#include <tree.h>
+#include <commit.h>
+#include <tag.h>
+#include <diff.h>
+#include <diffcore.h>
+#include <refs.h>
+#include <revision.h>
+#include <log-tree.h>
+#include <archive.h>
+#include <xdiff/xdiff.h>
+
 
 typedef void (*configfn)(const char *name, const char *value);
 
diff --git a/git.h b/git.h
deleted file mode 100644
index a1d1c4b..0000000
--- a/git.h
+++ /dev/null
@@ -1,699 +0,0 @@
-#ifndef GIT_H
-#define GIT_H
-
-
-/*
- * from git:git-compat-util.h 
- */
-
-
-#ifndef FLEX_ARRAY
-#if defined(__GNUC__) && (__GNUC__ < 3)
-#define FLEX_ARRAY 0
-#else
-#define FLEX_ARRAY /* empty */
-#endif
-#endif
-
-
-#include <unistd.h>
-#include <stdio.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <errno.h>
-#include <limits.h>
-#include <sys/param.h>
-#include <netinet/in.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <time.h>
-#include <regex.h>
-
-/* On most systems <limits.h> would have given us this, but
- * not on some systems (e.g. GNU/Hurd).
- */
-#ifndef PATH_MAX
-#define PATH_MAX 4096
-#endif
-
-#ifdef __GNUC__
-#define NORETURN __attribute__((__noreturn__))
-#else
-#define NORETURN
-#ifndef __attribute__
-#define __attribute__(x)
-#endif
-#endif
-
-
-extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
-
-
-static inline char* xstrdup(const char *str)
-{
-	char *ret = strdup(str);
-	if (!ret)
-		die("Out of memory, strdup failed");
-	return ret;
-}
-
-static inline void *xmalloc(size_t size)
-{
-	void *ret = malloc(size);
-	if (!ret && !size)
-		ret = malloc(1);
-	if (!ret)
-		die("Out of memory, malloc failed");
-#ifdef XMALLOC_POISON
-	memset(ret, 0xA5, size);
-#endif
-	return ret;
-}
-
-static inline void *xrealloc(void *ptr, size_t size)
-{
-	void *ret = realloc(ptr, size);
-	if (!ret && !size)
-		ret = realloc(ptr, 1);
-	if (!ret)
-		die("Out of memory, realloc failed");
-	return ret;
-}
-
-static inline void *xcalloc(size_t nmemb, size_t size)
-{
-	void *ret = calloc(nmemb, size);
-	if (!ret && (!nmemb || !size))
-		ret = calloc(1, 1);
-	if (!ret)
-		die("Out of memory, calloc failed");
-	return ret;
-}
-
-static inline ssize_t xread(int fd, void *buf, size_t len)
-{
-	ssize_t nr;
-	while (1) {
-		nr = read(fd, buf, len);
-		if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
-			continue;
-		return nr;
-	}
-}
-
-static inline ssize_t xwrite(int fd, const void *buf, size_t len)
-{
-	ssize_t nr;
-	while (1) {
-		nr = write(fd, buf, len);
-		if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
-			continue;
-		return nr;
-	}
-}
-
-
-
-
-/*
- * from git:cache.h
- */
-
-
-enum object_type {
-	OBJ_NONE = 0,
-	OBJ_COMMIT = 1,
-	OBJ_TREE = 2,
-	OBJ_BLOB = 3,
-	OBJ_TAG = 4,
-	/* 5 for future expansion */
-	OBJ_OFS_DELTA = 6,
-	OBJ_REF_DELTA = 7,
-	OBJ_BAD,
-};
-
-
-/* Convert to/from hex/sha1 representation */
-#define MINIMUM_ABBREV 4
-#define DEFAULT_ABBREV 7
-
-extern const unsigned char null_sha1[20];
-
-extern int sha1_object_info(const unsigned char *, char *, unsigned long *);
-
-extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
-
-extern int get_sha1(const char *str, unsigned char *sha1);
-extern int get_sha1_hex(const char *hex, unsigned char *sha1);
-extern char *sha1_to_hex(const unsigned char *sha1);	/* static buffer result! */
-
-static inline int is_null_sha1(const unsigned char *sha1)
-{
-	return !memcmp(sha1, null_sha1, 20);
-}
-static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
-{
-	return memcmp(sha1, sha2, 20);
-}
-static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
-{
-	memcpy(sha_dst, sha_src, 20);
-}
-static inline void hashclr(unsigned char *hash)
-{
-	memset(hash, 0, 20);
-}
-
-
-/*
- * from git:grep.h
- */
-
-enum grep_pat_token {
-        GREP_PATTERN,
-        GREP_PATTERN_HEAD,
-        GREP_PATTERN_BODY,
-        GREP_AND,
-        GREP_OPEN_PAREN,
-        GREP_CLOSE_PAREN,
-        GREP_NOT,
-        GREP_OR,
-};
-
-enum grep_context {
-        GREP_CONTEXT_HEAD,
-        GREP_CONTEXT_BODY,
-};
-
-struct grep_pat {
-        struct grep_pat *next;
-        const char *origin;
-        int no;
-        enum grep_pat_token token;
-        const char *pattern;
-        regex_t regexp;
-};
-
-enum grep_expr_node {
-        GREP_NODE_ATOM,
-        GREP_NODE_NOT,
-        GREP_NODE_AND,
-        GREP_NODE_OR,
-};
-
-struct grep_opt {
-        struct grep_pat *pattern_list;
-        struct grep_pat **pattern_tail;
-        struct grep_expr *pattern_expression;
-        int prefix_length;
-        regex_t regexp;
-        unsigned linenum:1;
-        unsigned invert:1;
-        unsigned status_only:1;
-        unsigned name_only:1;
-        unsigned unmatch_name_only:1;
-        unsigned count:1;
-        unsigned word_regexp:1;
-        unsigned fixed:1;
-        unsigned all_match:1;
-#define GREP_BINARY_DEFAULT     0
-#define GREP_BINARY_NOMATCH     1
-#define GREP_BINARY_TEXT        2
-        unsigned binary:2;
-        unsigned extended:1;
-        unsigned relative:1;
-        unsigned pathname:1;
-        int regflags;
-        unsigned pre_context;
-        unsigned post_context;
-};
-
-
-extern void compile_grep_patterns(struct grep_opt *opt);
-extern void free_grep_patterns(struct grep_opt *opt);
-
-
-/*
- * from git:object.h 
- */
-
-extern const char *type_names[9];
-
-struct object_list {
-	struct object *item;
-	struct object_list *next;
-};
-
-struct object_refs {
-	unsigned count;
-	struct object *base;
-	struct object *ref[FLEX_ARRAY]; /* more */
-};
-
-struct object_array {
-	unsigned int nr;
-	unsigned int alloc;
-	struct object_array_entry {
-		struct object *item;
-		const char *name;
-	} *objects;
-};
-
-#define TYPE_BITS   3
-#define FLAG_BITS  27
-
-/*
- * The object type is stored in 3 bits.
- */
-struct object {
-	unsigned parsed : 1;
-	unsigned used : 1;
-	unsigned type : TYPE_BITS;
-	unsigned flags : FLAG_BITS;
-	unsigned char sha1[20];
-};
-
-
-/** Returns the object, having parsed it to find out what it is. **/
-struct object *parse_object(const unsigned char *sha1);
-
-
-/*
- * from git:tree.h
- */
-
-struct tree {
-	struct object object;
-	void *buffer;
-	unsigned long size;
-};
-
-
-struct tree *lookup_tree(const unsigned char *sha1);
-int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size);
-int parse_tree(struct tree *tree);
-struct tree *parse_tree_indirect(const unsigned char *sha1);
-
-typedef int (*read_tree_fn_t)(const unsigned char *, const char *, int, const char *, unsigned int, int);
-
-extern int read_tree_recursive(struct tree *tree,
-			       const char *base, int baselen,
-			       int stage, const char **match,
-			       read_tree_fn_t fn);
-
-extern int read_tree(struct tree *tree, int stage, const char **paths);
-
-
-/* from git:commit.h */
-
-struct commit_list {
-	struct commit *item;
-	struct commit_list *next;
-};
-
-struct commit {
-	struct object object;
-	void *util;
-	unsigned long date;
-	struct commit_list *parents;
-	struct tree *tree;
-	char *buffer;
-};
-
-
-struct commit *lookup_commit(const unsigned char *sha1);
-struct commit *lookup_commit_reference(const unsigned char *sha1);
-struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
-					      int quiet);
-
-int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
-int parse_commit(struct commit *item);
-
-struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
-struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
-
-void free_commit_list(struct commit_list *list);
-
-void sort_by_date(struct commit_list **list);
-
-/* Commit formats */
-enum cmit_fmt {
-	CMIT_FMT_RAW,
-	CMIT_FMT_MEDIUM,
-	CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
-	CMIT_FMT_SHORT,
-	CMIT_FMT_FULL,
-	CMIT_FMT_FULLER,
-	CMIT_FMT_ONELINE,
-	CMIT_FMT_EMAIL,
-
-	CMIT_FMT_UNSPECIFIED,
-};
-
-extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev, const char *subject, const char *after_subject, int relative_date);
-
-
-typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
-typedef void* (*topo_sort_get_fn_t)(struct commit*);
-
-
-
-/*
- * from git:tag.h
- */
-
-extern const char *tag_type;
-
-struct tag {
-	struct object object;
-	struct object *tagged;
-	char *tag;
-	char *signature; /* not actually implemented */
-};
-
-extern struct tag *lookup_tag(const unsigned char *sha1);
-extern int parse_tag_buffer(struct tag *item, void *data, unsigned long size);
-extern int parse_tag(struct tag *item);
-extern struct object *deref_tag(struct object *, const char *, int);
-
-
-/*
- * from git:diffcore.h
- */
-
-struct diff_filespec {
-	unsigned char sha1[20];
-	char *path;
-	void *data;
-	void *cnt_data;
-	unsigned long size;
-	int xfrm_flags;		 /* for use by the xfrm */
-	unsigned short mode;	 /* file mode */
-	unsigned sha1_valid : 1; /* if true, use sha1 and trust mode;
-				  * if false, use the name and read from
-				  * the filesystem.
-				  */
-#define DIFF_FILE_VALID(spec) (((spec)->mode) != 0)
-	unsigned should_free : 1; /* data should be free()'ed */
-	unsigned should_munmap : 1; /* data should be munmap()'ed */
-};
-
-struct diff_filepair {
-	struct diff_filespec *one;
-	struct diff_filespec *two;
-	unsigned short int score;
-	char status; /* M C R N D U (see Documentation/diff-format.txt) */
-	unsigned source_stays : 1; /* all of R/C are copies */
-	unsigned broken_pair : 1;
-	unsigned renamed_pair : 1;
-};
-
-#define DIFF_PAIR_UNMERGED(p) \
-	(!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two))
-
-#define DIFF_PAIR_RENAME(p) ((p)->renamed_pair)
-
-#define DIFF_PAIR_BROKEN(p) \
-	( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \
-	  ((p)->broken_pair != 0) )
-
-#define DIFF_PAIR_TYPE_CHANGED(p) \
-	((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode))
-
-#define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode)
-
-extern void diff_free_filepair(struct diff_filepair *);
-
-extern int diff_unmodified_pair(struct diff_filepair *);
-
-struct diff_queue_struct {
-	struct diff_filepair **queue;
-	int alloc;
-	int nr;
-};
-
-
-/*
- *  from git:diff.h
- */
-
-
-struct rev_info;
-struct diff_options;
-struct diff_queue_struct;
-
-typedef void (*change_fn_t)(struct diff_options *options,
-		 unsigned old_mode, unsigned new_mode,
-		 const unsigned char *old_sha1,
-		 const unsigned char *new_sha1,
-		 const char *base, const char *path);
-
-typedef void (*add_remove_fn_t)(struct diff_options *options,
-		    int addremove, unsigned mode,
-		    const unsigned char *sha1,
-		    const char *base, const char *path);
-
-typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
-		struct diff_options *options, void *data);
-
-#define DIFF_FORMAT_RAW		0x0001
-#define DIFF_FORMAT_DIFFSTAT	0x0002
-#define DIFF_FORMAT_NUMSTAT	0x0004
-#define DIFF_FORMAT_SUMMARY	0x0008
-#define DIFF_FORMAT_PATCH	0x0010
-
-/* These override all above */
-#define DIFF_FORMAT_NAME	0x0100
-#define DIFF_FORMAT_NAME_STATUS	0x0200
-#define DIFF_FORMAT_CHECKDIFF	0x0400
-
-/* Same as output_format = 0 but we know that -s flag was given
- * and we should not give default value to output_format.
- */
-#define DIFF_FORMAT_NO_OUTPUT	0x0800
-
-#define DIFF_FORMAT_CALLBACK	0x1000
-
-struct diff_options {
-	const char *filter;
-	const char *orderfile;
-	const char *pickaxe;
-	const char *single_follow;
-	unsigned recursive:1,
-		 tree_in_recursive:1,
-		 binary:1,
-		 text:1,
-		 full_index:1,
-		 silent_on_remove:1,
-		 find_copies_harder:1,
-		 color_diff:1,
-		 color_diff_words:1;
-	int context;
-	int break_opt;
-	int detect_rename;
-	int line_termination;
-	int output_format;
-	int pickaxe_opts;
-	int rename_score;
-	int reverse_diff;
-	int rename_limit;
-	int setup;
-	int abbrev;
-	const char *msg_sep;
-	const char *stat_sep;
-	long xdl_opts;
-
-	int stat_width;
-	int stat_name_width;
-
-	int nr_paths;
-	const char **paths;
-	int *pathlens;
-	change_fn_t change;
-	add_remove_fn_t add_remove;
-	diff_format_fn_t format_callback;
-	void *format_callback_data;
-};
-
-enum color_diff {
-	DIFF_RESET = 0,
-	DIFF_PLAIN = 1,
-	DIFF_METAINFO = 2,
-	DIFF_FRAGINFO = 3,
-	DIFF_FILE_OLD = 4,
-	DIFF_FILE_NEW = 5,
-	DIFF_COMMIT = 6,
-	DIFF_WHITESPACE = 7,
-};
-
-
-extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
-			  const char *base, struct diff_options *opt);
-
-extern int diff_root_tree_sha1(const unsigned char *new, const char *base,
-			       struct diff_options *opt);
-
-extern int git_diff_ui_config(const char *var, const char *value);
-extern void diff_setup(struct diff_options *);
-extern int diff_opt_parse(struct diff_options *, const char **, int);
-extern int diff_setup_done(struct diff_options *);
-
-
-extern void diffcore_std(struct diff_options *);
-extern void diff_flush(struct diff_options*);
-
-
-/* diff-raw status letters */
-#define DIFF_STATUS_ADDED		'A'
-#define DIFF_STATUS_COPIED		'C'
-#define DIFF_STATUS_DELETED		'D'
-#define DIFF_STATUS_MODIFIED		'M'
-#define DIFF_STATUS_RENAMED		'R'
-#define DIFF_STATUS_TYPE_CHANGED	'T'
-#define DIFF_STATUS_UNKNOWN		'X'
-#define DIFF_STATUS_UNMERGED		'U'
-
-
-
-/*
- * from git:refs.g
- */
-
-typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, void *cb_data);
-extern int head_ref(each_ref_fn, void *);
-extern int for_each_ref(each_ref_fn, void *);
-extern int for_each_tag_ref(each_ref_fn, void *);
-extern int for_each_branch_ref(each_ref_fn, void *);
-extern int for_each_remote_ref(each_ref_fn, void *);
-
-
-
-/*
- * from git:revision.h
- */
-
-struct rev_info;
-struct log_info;
-
-typedef void (prune_fn_t)(struct rev_info *revs, struct commit *commit);
-
-struct rev_info {
-	/* Starting list */
-	struct commit_list *commits;
-	struct object_array pending;
-
-	/* Basic information */
-	const char *prefix;
-	void *prune_data;
-	prune_fn_t *prune_fn;
-
-	/* Traversal flags */
-	unsigned int	dense:1,
-			no_merges:1,
-			no_walk:1,
-			remove_empty_trees:1,
-			simplify_history:1,
-			lifo:1,
-			topo_order:1,
-			tag_objects:1,
-			tree_objects:1,
-			blob_objects:1,
-			edge_hint:1,
-			limited:1,
-			unpacked:1, /* see also ignore_packed below */
-			boundary:1,
-			parents:1;
-
-	/* Diff flags */
-	unsigned int	diff:1,
-			full_diff:1,
-			show_root_diff:1,
-			no_commit_id:1,
-			verbose_header:1,
-			ignore_merges:1,
-			combine_merges:1,
-			dense_combined_merges:1,
-			always_show_header:1;
-
-	/* Format info */
-	unsigned int	shown_one:1,
-			abbrev_commit:1,
-			relative_date:1;
-
-	const char **ignore_packed; /* pretend objects in these are unpacked */
-	int num_ignore_packed;
-
-	unsigned int	abbrev;
-	enum cmit_fmt	commit_format;
-	struct log_info *loginfo;
-	int		nr, total;
-	const char	*mime_boundary;
-	const char	*message_id;
-	const char	*ref_message_id;
-	const char	*add_signoff;
-	const char	*extra_headers;
-
-	/* Filter by commit log message */
-	struct grep_opt	*grep_filter;
-
-	/* special limits */
-	int max_count;
-	unsigned long max_age;
-	unsigned long min_age;
-
-	/* diff info for patches and for paths limiting */
-	struct diff_options diffopt;
-	struct diff_options pruning;
-
-	topo_sort_set_fn_t topo_setter;
-	topo_sort_get_fn_t topo_getter;
-};
-
-
-extern void init_revisions(struct rev_info *revs, const char *prefix);
-extern int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def);
-extern int handle_revision_arg(const char *arg, struct rev_info *revs,int flags,int cant_be_filename);
-
-extern void prepare_revision_walk(struct rev_info *revs);
-extern struct commit *get_revision(struct rev_info *revs);
-
-
-
-/* from git:log-tree.h */
-
-int log_tree_commit(struct rev_info *, struct commit *);
-
-
-
-/* from git:archive.h */
-
-struct archiver_args {
-	const char *base;
-	struct tree *tree;
-	const unsigned char *commit_sha1;
-	time_t time;
-	const char **pathspec;
-	unsigned int verbose : 1;
-	void *extra;
-};
-
-typedef int (*write_archive_fn_t)(struct archiver_args *);
-
-typedef void *(*parse_extra_args_fn_t)(int argc, const char **argv);
-
-struct archiver {
-	const char *name;
-	struct archiver_args args;
-	write_archive_fn_t write_archive;
-	parse_extra_args_fn_t parse_extra;
-};
-
-extern int write_tar_archive(struct archiver_args *);
-extern int write_zip_archive(struct archiver_args *);
-extern void *parse_extra_zip_args(int argc, const char **argv);
-
-#endif /* GIT_H */
diff --git a/parsing.c b/parsing.c
index 1013dad..332d61c 100644
--- a/parsing.c
+++ b/parsing.c
@@ -201,13 +201,13 @@ struct commitinfo *cgit_parse_commit(struct commit *commit)
 struct taginfo *cgit_parse_tag(struct tag *tag)
 {
 	void *data;
-	char type[20];
+	enum object_type type;
 	unsigned long size;
 	char *p, *t;
 	struct taginfo *ret;
 
-	data = read_sha1_file(tag->object.sha1, type, &size);
-	if (!data || strcmp(type, tag_type)) {
+	data = read_sha1_file(tag->object.sha1, &type, &size);
+	if (!data || type != OBJ_TAG) {
 		free(data);
 		return 0;
 	}
diff --git a/ui-diff.c b/ui-diff.c
index b6486f1..0ad9faf 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -7,7 +7,6 @@
  */
 
 #include "cgit.h"
-#include "xdiff.h"
 
 char *diff_buffer;
 int diff_buffer_size;
@@ -82,13 +81,13 @@ int diff_cb(void *priv_, mmbuffer_t *mb, int nbuf)
 
 static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
 {
-	char type[20];
+	enum object_type type;
 
 	if (is_null_sha1(sha1)) {
 		file->ptr = (char *)"";
 		file->size = 0;
 	} else {
-		file->ptr = read_sha1_file(sha1, type, &file->size);
+		file->ptr = read_sha1_file(sha1, &type, &file->size);
 	}
 	return 1;
 }
diff --git a/ui-summary.c b/ui-summary.c
index 42f4300..0a7869b 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -62,7 +62,7 @@ static void cgit_print_object_ref(struct object *obj)
 	url = cgit_pageurl(cgit_query_repo, page, 
 			   fmt("id=%s", sha1_to_hex(obj->sha1)));
 	html_link_open(url, NULL, NULL);
-	htmlf("%s %s", type_names[obj->type], 
+	htmlf("%s %s", typename(obj->type), 
 	      sha1_to_hex(obj->sha1));
 	html_link_close();
 }
diff --git a/ui-tree.c b/ui-tree.c
index b00670e..60f7560 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -14,37 +14,39 @@ static int print_entry(const unsigned char *sha1, const char *base,
 		       int stage)
 {
 	char *name;
-	char type[20];
+	enum object_type type;
 	unsigned long size;
 
-	if (sha1_object_info(sha1, type, &size)) {
-		cgit_print_error(fmt("Bad object name: %s", 
-				     sha1_to_hex(sha1)));
+	name = xstrdup(pathname);
+	type = sha1_object_info(sha1, &size);
+	if (type == OBJ_BAD) {
+		htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
+		      name,
+		      sha1_to_hex(sha1));
 		return 0;
 	}
-	name = xstrdup(pathname);
 	html("<tr><td class='filemode'>");
 	html_filemode(mode);
 	html("</td><td>");
-	if (S_ISDIR(mode)) {
+	if (S_ISDIRLNK(mode)) {
+		htmlf("<div class='ls-dirlnk'>%s => submodule</div>", name);
+	} else if (S_ISDIR(mode)) {
 		html("<div class='ls-dir'><a href='");
 		html_attr(cgit_pageurl(cgit_query_repo, "tree", 
 				       fmt("id=%s&path=%s%s/", 
 					   sha1_to_hex(sha1),
 					   cgit_query_path ? cgit_query_path : "",
 					   pathname)));
+		htmlf("'>%s</a></div>", name);
 	} else {
 		html("<div class='ls-blob'><a href='");
 		html_attr(cgit_pageurl(cgit_query_repo, "view",
 				      fmt("id=%s&path=%s%s", sha1_to_hex(sha1),
 					  cgit_query_path ? cgit_query_path : "",
 					  pathname)));
+		htmlf("'>%s</a></div>", name);
 	}
-	html("'>");
-	html_txt(name);
-	if (S_ISDIR(mode))
-		html("/");
-	html("</a></div></td>");
+	html("</div></td>");
 	htmlf("<td class='filesize'>%li</td>", size);
 	html("</tr>\n");
 	free(name);
diff --git a/ui-view.c b/ui-view.c
index 85e223c..9d23c45 100644
--- a/ui-view.c
+++ b/ui-view.c
@@ -11,7 +11,7 @@
 void cgit_print_view(const char *hex)
 {
 	unsigned char sha1[20];
-	char type[20];
+	enum object_type type;
 	unsigned char *buf;
 	unsigned long size;
 
@@ -20,20 +20,22 @@ void cgit_print_view(const char *hex)
 	        return;
 	}
 
-	if (sha1_object_info(sha1, type, &size)){
-		cgit_print_error("Bad object name");
+	type = sha1_object_info(sha1, &size);
+	if (type == OBJ_BAD) {
+		cgit_print_error(fmt("Bad object name: %s", hex));
 		return;
 	}
 
-	buf = read_sha1_file(sha1, type, &size);
+	buf = read_sha1_file(sha1, &type, &size);
 	if (!buf) {
-		cgit_print_error("Error reading object");
+		cgit_print_error(fmt("Error reading object %s", hex));
 		return;
 	}
 
 	buf[size] = '\0';
 	html("<table class='list'>\n");
-	htmlf("<tr class='nohover'><th class='left'>%s %s, %li bytes</th></tr>\n", type, hex, size);
+	htmlf("<tr class='nohover'><th class='left'>%s %s, %li bytes</th></tr>\n",
+	      typename(type), hex, size);
 	html("<tr><td class='blob'>\n");
 	html_txt(buf);
 	html("\n</td></tr>\n");
diff --git a/xdiff.h b/xdiff.h
deleted file mode 100644
index fa409d5..0000000
--- a/xdiff.h
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- *  LibXDiff by Davide Libenzi ( File Differential Library )
- *  Copyright (C) 2003  Davide Libenzi
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Lesser General Public
- *  License as published by the Free Software Foundation; either
- *  version 2.1 of the License, or (at your option) any later version.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public
- *  License along with this library; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- *  Davide Libenzi <davidel@xmailserver.org>
- *
- */
-
-#if !defined(XDIFF_H)
-#define XDIFF_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* #ifdef __cplusplus */
-
-
-#define XDF_NEED_MINIMAL (1 << 1)
-#define XDF_IGNORE_WHITESPACE (1 << 2)
-#define XDF_IGNORE_WHITESPACE_CHANGE (1 << 3)
-#define XDF_WHITESPACE_FLAGS (XDF_IGNORE_WHITESPACE | XDF_IGNORE_WHITESPACE_CHANGE)
-
-#define XDL_PATCH_NORMAL '-'
-#define XDL_PATCH_REVERSE '+'
-#define XDL_PATCH_MODEMASK ((1 << 8) - 1)
-#define XDL_PATCH_IGNOREBSPACE (1 << 8)
-
-#define XDL_EMIT_FUNCNAMES (1 << 0)
-#define XDL_EMIT_COMMON (1 << 1)
-
-#define XDL_MMB_READONLY (1 << 0)
-
-#define XDL_MMF_ATOMIC (1 << 0)
-
-#define XDL_BDOP_INS 1
-#define XDL_BDOP_CPY 2
-#define XDL_BDOP_INSB 3
-
-#define XDL_MERGE_MINIMAL 0
-#define XDL_MERGE_EAGER 1
-#define XDL_MERGE_ZEALOUS 2
-
-typedef struct s_mmfile {
-	char *ptr;
-	long size;
-} mmfile_t;
-
-typedef struct s_mmbuffer {
-	char *ptr;
-	long size;
-} mmbuffer_t;
-
-typedef struct s_xpparam {
-	unsigned long flags;
-} xpparam_t;
-
-typedef struct s_xdemitcb {
-	void *priv;
-	int (*outf)(void *, mmbuffer_t *, int);
-} xdemitcb_t;
-
-typedef struct s_xdemitconf {
-	long ctxlen;
-	unsigned long flags;
-} xdemitconf_t;
-
-typedef struct s_bdiffparam {
-	long bsize;
-} bdiffparam_t;
-
-
-#define xdl_malloc(x) malloc(x)
-#define xdl_free(ptr) free(ptr)
-#define xdl_realloc(ptr,x) realloc(ptr,x)
-
-void *xdl_mmfile_first(mmfile_t *mmf, long *size);
-void *xdl_mmfile_next(mmfile_t *mmf, long *size);
-long xdl_mmfile_size(mmfile_t *mmf);
-
-int xdl_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
-	     xdemitconf_t const *xecfg, xdemitcb_t *ecb);
-
-int xdl_merge(mmfile_t *orig, mmfile_t *mf1, const char *name1,
-		mmfile_t *mf2, const char *name2,
-		xpparam_t const *xpp, int level, mmbuffer_t *result);
-
-#ifdef __cplusplus
-}
-#endif /* #ifdef __cplusplus */
-
-#endif /* #if !defined(XDIFF_H) */
-