1#ifndef GIT_H
  2#define GIT_H
  3
  4
  5/*
  6 * from git:git-compat-util.h 
  7 */
  8
  9
 10#ifndef FLEX_ARRAY
 11#if defined(__GNUC__) && (__GNUC__ < 3)
 12#define FLEX_ARRAY 0
 13#else
 14#define FLEX_ARRAY /* empty */
 15#endif
 16#endif
 17
 18
 19#include <unistd.h>
 20#include <stdio.h>
 21#include <sys/stat.h>
 22#include <fcntl.h>
 23#include <stddef.h>
 24#include <stdlib.h>
 25#include <stdarg.h>
 26#include <string.h>
 27#include <errno.h>
 28#include <limits.h>
 29#include <sys/param.h>
 30#include <netinet/in.h>
 31#include <sys/types.h>
 32#include <dirent.h>
 33#include <time.h>
 34
 35
 36static inline char* xstrdup(const char *str)
 37{
 38	char *ret = strdup(str);
 39	if (!ret)
 40		die("Out of memory, strdup failed");
 41	return ret;
 42}
 43
 44static inline void *xmalloc(size_t size)
 45{
 46	void *ret = malloc(size);
 47	if (!ret && !size)
 48		ret = malloc(1);
 49	if (!ret)
 50		die("Out of memory, malloc failed");
 51#ifdef XMALLOC_POISON
 52	memset(ret, 0xA5, size);
 53#endif
 54	return ret;
 55}
 56
 57static inline void *xrealloc(void *ptr, size_t size)
 58{
 59	void *ret = realloc(ptr, size);
 60	if (!ret && !size)
 61		ret = realloc(ptr, 1);
 62	if (!ret)
 63		die("Out of memory, realloc failed");
 64	return ret;
 65}
 66
 67static inline void *xcalloc(size_t nmemb, size_t size)
 68{
 69	void *ret = calloc(nmemb, size);
 70	if (!ret && (!nmemb || !size))
 71		ret = calloc(1, 1);
 72	if (!ret)
 73		die("Out of memory, calloc failed");
 74	return ret;
 75}
 76
 77static inline ssize_t xread(int fd, void *buf, size_t len)
 78{
 79	ssize_t nr;
 80	while (1) {
 81		nr = read(fd, buf, len);
 82		if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
 83			continue;
 84		return nr;
 85	}
 86}
 87
 88static inline ssize_t xwrite(int fd, const void *buf, size_t len)
 89{
 90	ssize_t nr;
 91	while (1) {
 92		nr = write(fd, buf, len);
 93		if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
 94			continue;
 95		return nr;
 96	}
 97}
 98
 99
100
101
102/*
103 * from git:cache.h
104 */
105
106
107/* Convert to/from hex/sha1 representation */
108#define MINIMUM_ABBREV 4
109#define DEFAULT_ABBREV 7
110
111
112extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
113
114
115
116
117/*
118 * from git:object.h 
119 */
120
121struct object_list {
122	struct object *item;
123	struct object_list *next;
124};
125
126struct object_refs {
127	unsigned count;
128	struct object *base;
129	struct object *ref[FLEX_ARRAY]; /* more */
130};
131
132struct object_array {
133	unsigned int nr;
134	unsigned int alloc;
135	struct object_array_entry {
136		struct object *item;
137		const char *name;
138	} *objects;
139};
140
141#define TYPE_BITS   3
142#define FLAG_BITS  27
143
144/*
145 * The object type is stored in 3 bits.
146 */
147struct object {
148	unsigned parsed : 1;
149	unsigned used : 1;
150	unsigned type : TYPE_BITS;
151	unsigned flags : FLAG_BITS;
152	unsigned char sha1[20];
153};
154
155
156/*
157 * from git:tree.h
158 */
159
160struct tree {
161	struct object object;
162	void *buffer;
163	unsigned long size;
164};
165
166
167
168
169/* from git:commit.h */
170
171struct commit_list {
172	struct commit *item;
173	struct commit_list *next;
174};
175
176struct commit {
177	struct object object;
178	void *util;
179	unsigned long date;
180	struct commit_list *parents;
181	struct tree *tree;
182	char *buffer;
183};
184
185
186/* Commit formats */
187enum cmit_fmt {
188	CMIT_FMT_RAW,
189	CMIT_FMT_MEDIUM,
190	CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
191	CMIT_FMT_SHORT,
192	CMIT_FMT_FULL,
193	CMIT_FMT_FULLER,
194	CMIT_FMT_ONELINE,
195	CMIT_FMT_EMAIL,
196
197	CMIT_FMT_UNSPECIFIED,
198};
199
200
201
202struct commit *lookup_commit(const unsigned char *sha1);
203struct commit *lookup_commit_reference(const unsigned char *sha1);
204struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
205					      int quiet);
206
207typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
208typedef void* (*topo_sort_get_fn_t)(struct commit*);
209
210
211
212
213/*
214 *  from git:diff.h
215 */
216
217
218struct rev_info;
219struct diff_options;
220struct diff_queue_struct;
221
222typedef void (*change_fn_t)(struct diff_options *options,
223		 unsigned old_mode, unsigned new_mode,
224		 const unsigned char *old_sha1,
225		 const unsigned char *new_sha1,
226		 const char *base, const char *path);
227
228typedef void (*add_remove_fn_t)(struct diff_options *options,
229		    int addremove, unsigned mode,
230		    const unsigned char *sha1,
231		    const char *base, const char *path);
232
233typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
234		struct diff_options *options, void *data);
235
236#define DIFF_FORMAT_RAW		0x0001
237#define DIFF_FORMAT_DIFFSTAT	0x0002
238#define DIFF_FORMAT_NUMSTAT	0x0004
239#define DIFF_FORMAT_SUMMARY	0x0008
240#define DIFF_FORMAT_PATCH	0x0010
241
242/* These override all above */
243#define DIFF_FORMAT_NAME	0x0100
244#define DIFF_FORMAT_NAME_STATUS	0x0200
245#define DIFF_FORMAT_CHECKDIFF	0x0400
246
247/* Same as output_format = 0 but we know that -s flag was given
248 * and we should not give default value to output_format.
249 */
250#define DIFF_FORMAT_NO_OUTPUT	0x0800
251
252#define DIFF_FORMAT_CALLBACK	0x1000
253
254struct diff_options {
255	const char *filter;
256	const char *orderfile;
257	const char *pickaxe;
258	const char *single_follow;
259	unsigned recursive:1,
260		 tree_in_recursive:1,
261		 binary:1,
262		 text:1,
263		 full_index:1,
264		 silent_on_remove:1,
265		 find_copies_harder:1,
266		 color_diff:1,
267		 color_diff_words:1;
268	int context;
269	int break_opt;
270	int detect_rename;
271	int line_termination;
272	int output_format;
273	int pickaxe_opts;
274	int rename_score;
275	int reverse_diff;
276	int rename_limit;
277	int setup;
278	int abbrev;
279	const char *msg_sep;
280	const char *stat_sep;
281	long xdl_opts;
282
283	int stat_width;
284	int stat_name_width;
285
286	int nr_paths;
287	const char **paths;
288	int *pathlens;
289	change_fn_t change;
290	add_remove_fn_t add_remove;
291	diff_format_fn_t format_callback;
292	void *format_callback_data;
293};
294
295enum color_diff {
296	DIFF_RESET = 0,
297	DIFF_PLAIN = 1,
298	DIFF_METAINFO = 2,
299	DIFF_FRAGINFO = 3,
300	DIFF_FILE_OLD = 4,
301	DIFF_FILE_NEW = 5,
302	DIFF_COMMIT = 6,
303	DIFF_WHITESPACE = 7,
304};
305
306
307
308
309
310
311
312/*
313 * from git:revision.h
314 */
315
316struct rev_info;
317struct log_info;
318
319typedef void (prune_fn_t)(struct rev_info *revs, struct commit *commit);
320
321struct rev_info {
322	/* Starting list */
323	struct commit_list *commits;
324	struct object_array pending;
325
326	/* Basic information */
327	const char *prefix;
328	void *prune_data;
329	prune_fn_t *prune_fn;
330
331	/* Traversal flags */
332	unsigned int	dense:1,
333			no_merges:1,
334			no_walk:1,
335			remove_empty_trees:1,
336			simplify_history:1,
337			lifo:1,
338			topo_order:1,
339			tag_objects:1,
340			tree_objects:1,
341			blob_objects:1,
342			edge_hint:1,
343			limited:1,
344			unpacked:1, /* see also ignore_packed below */
345			boundary:1,
346			parents:1;
347
348	/* Diff flags */
349	unsigned int	diff:1,
350			full_diff:1,
351			show_root_diff:1,
352			no_commit_id:1,
353			verbose_header:1,
354			ignore_merges:1,
355			combine_merges:1,
356			dense_combined_merges:1,
357			always_show_header:1;
358
359	/* Format info */
360	unsigned int	shown_one:1,
361			abbrev_commit:1,
362			relative_date:1;
363
364	const char **ignore_packed; /* pretend objects in these are unpacked */
365	int num_ignore_packed;
366
367	unsigned int	abbrev;
368	enum cmit_fmt	commit_format;
369	struct log_info *loginfo;
370	int		nr, total;
371	const char	*mime_boundary;
372	const char	*message_id;
373	const char	*ref_message_id;
374	const char	*add_signoff;
375	const char	*extra_headers;
376
377	/* Filter by commit log message */
378	struct grep_opt	*grep_filter;
379
380	/* special limits */
381	int max_count;
382	unsigned long max_age;
383	unsigned long min_age;
384
385	/* diff info for patches and for paths limiting */
386	struct diff_options diffopt;
387	struct diff_options pruning;
388
389	topo_sort_set_fn_t topo_setter;
390	topo_sort_get_fn_t topo_getter;
391};
392
393
394extern struct commit *get_revision(struct rev_info *revs);
395
396
397
398
399#endif /* GIT_H */