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#ifndef CGIT_H
#define CGIT_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>
#include <utf8.h>


/*
 * Dateformats used on misc. pages
 */
#define FMT_LONGDATE "%Y-%m-%d %H:%M:%S (%Z)"
#define FMT_SHORTDATE "%Y-%m-%d"
#define FMT_ATOMDATE "%Y-%m-%dT%H:%M:%SZ"


/*
 * Limits used for relative dates
 */
#define TM_MIN    60
#define TM_HOUR  (TM_MIN * 60)
#define TM_DAY   (TM_HOUR * 24)
#define TM_WEEK  (TM_DAY * 7)
#define TM_YEAR  (TM_DAY * 365)
#define TM_MONTH (TM_YEAR / 12.0)


/*
 * Default encoding
 */
#define PAGE_ENCODING "UTF-8"

typedef void (*configfn)(const char *name, const char *value);
typedef void (*filepair_fn)(struct diff_filepair *pair);
typedef void (*linediff_fn)(char *line, int len);

struct cgit_repo {
	char *url;
	char *name;
	char *path;
	char *desc;
	char *owner;
	char *defbranch;
	char *group;
	char *module_link;
	char *readme;
	char *clone_url;
	int snapshots;
	int enable_log_filecount;
	int enable_log_linecount;
};

struct cgit_repolist {
	int length;
	int count;
	struct cgit_repo *repos;
};

struct commitinfo {
	struct commit *commit;
	char *author;
	char *author_email;
	unsigned long author_date;
	char *committer;
	char *committer_email;
	unsigned long committer_date;
	char *subject;
	char *msg;
	char *msg_encoding;
};

struct taginfo {
	char *tagger;
	char *tagger_email;
	int tagger_date;
	char *msg;
};

struct refinfo {
	const char *refname;
	struct object *object;
	union {
		struct taginfo *tag;
		struct commitinfo *commit;
	};
};

struct reflist {
	struct refinfo **refs;
	int alloc;
	int count;
};

struct cgit_query {
	int has_symref;
	int has_sha1;
	char *raw;
	char *repo;
	char *page;
	char *search;
	char *grep;
	char *head;
	char *sha1;
	char *sha2;
	char *path;
	char *name;
	char *mimetype;
	int   ofs;
};

struct cgit_config {
	char *agefile;
	char *cache_root;
	char *clone_prefix;
	char *css;
	char *favicon;
	char *footer;
	char *index_header;
	char *index_info;
	char *logo;
	char *logo_link;
	char *module_link;
	char *repo_group;
	char *robots;
	char *root_title;
	char *root_desc;
	char *root_readme;
	char *script_name;
	char *virtual_root;
	int cache_size;
	int cache_dynamic_ttl;
	int cache_max_create_time;
	int cache_repo_ttl;
	int cache_root_ttl;
	int cache_static_ttl;
	int enable_index_links;
	int enable_log_filecount;
	int enable_log_linecount;
	int local_time;
	int max_repo_count;
	int max_commit_count;
	int max_lock_attempts;
	int max_msg_len;
	int max_repodesc_len;
	int nocache;
	int renamelimit;
	int snapshots;
	int summary_branches;
	int summary_log;
	int summary_tags;
};

struct cgit_page {
	time_t modified;
	time_t expires;
	char *mimetype;
	char *charset;
	char *filename;
	char *title;
};

struct cgit_context {
	struct cgit_query qry;
	struct cgit_config cfg;
	struct cgit_repo *repo;
	struct cgit_page page;
};

struct cgit_snapshot_format {
	const char *suffix;
	const char *mimetype;
	write_archive_fn_t write_func;
	int bit;
};

extern const char *cgit_version;

extern struct cgit_repolist cgit_repolist;
extern struct cgit_context ctx;
extern const struct cgit_snapshot_format cgit_snapshot_formats[];

extern struct cgit_repo *cgit_add_repo(const char *url);
extern struct cgit_repo *cgit_get_repoinfo(const char *url);
extern void cgit_repo_config_cb(const char *name, const char *value);

extern int chk_zero(int result, char *msg);
extern int chk_positive(int result, char *msg);
extern int chk_non_negative(int result, char *msg);

extern char *trim_end(const char *str, char c);
extern char *strlpart(char *txt, int maxlen);
extern char *strrpart(char *txt, int maxlen);

extern void cgit_add_ref(struct reflist *list, struct refinfo *ref);
extern int cgit_refs_cb(const char *refname, const unsigned char *sha1,
			int flags, void *cb_data);

extern void *cgit_free_commitinfo(struct commitinfo *info);

extern int cgit_diff_files(const unsigned char *old_sha1,
			   const unsigned char *new_sha1,
			   linediff_fn fn);

extern void cgit_diff_tree(const unsigned char *old_sha1,
			   const unsigned char *new_sha1,
			   filepair_fn fn, const char *prefix);

extern void cgit_diff_commit(struct commit *commit, filepair_fn fn);

extern char *fmt(const char *format,...);

extern struct commitinfo *cgit_parse_commit(struct commit *commit);
extern struct taginfo *cgit_parse_tag(struct tag *tag);
extern void cgit_parse_url(const char *url);

extern const char *cgit_repobasename(const char *reponame);

extern int cgit_parse_snapshots_mask(const char *str);

/* libgit.a either links against or compiles its own implementation of
 * strcasestr(), and we'd like to reuse it. Simply re-declaring it
 * seems to do the trick.
 */
extern char *strcasestr(const char *haystack, const char *needle);


#endif /* CGIT_H */