1#include "builtin.h"
2#include "cache.h"
3#include "commit.h"
4#include "diff.h"
5#include "string-list.h"
6#include "revision.h"
7#include "utf8.h"
8#include "mailmap.h"
9#include "shortlog.h"
10#include "parse-options.h"
11
12static char const * const shortlog_usage[] = {
13 N_("git shortlog [<options>] [<revision-range>] [[--] [<path>...]]"),
14 NULL
15};
16
17/*
18 * The util field of our string_list_items will contain one of two things:
19 *
20 * - if --summary is not in use, it will point to a string list of the
21 * oneline subjects assigned to this author
22 *
23 * - if --summary is in use, we don't need that list; we only need to know
24 * its size. So we abuse the pointer slot to store our integer counter.
25 *
26 * This macro accesses the latter.
27 */
28#define UTIL_TO_INT(x) ((intptr_t)(x)->util)
29
30static int compare_by_counter(const void *a1, const void *a2)
31{
32 const struct string_list_item *i1 = a1, *i2 = a2;
33 return UTIL_TO_INT(i2) - UTIL_TO_INT(i1);
34}
35
36static int compare_by_list(const void *a1, const void *a2)
37{
38 const struct string_list_item *i1 = a1, *i2 = a2;
39 const struct string_list *l1 = i1->util, *l2 = i2->util;
40
41 if (l1->nr < l2->nr)
42 return 1;
43 else if (l1->nr == l2->nr)
44 return 0;
45 else
46 return -1;
47}
48
49static void insert_one_record(struct shortlog *log,
50 const char *author,
51 const char *oneline)
52{
53 struct string_list_item *item;
54 const char *mailbuf, *namebuf;
55 size_t namelen, maillen;
56 struct strbuf namemailbuf = STRBUF_INIT;
57 struct ident_split ident;
58
59 if (split_ident_line(&ident, author, strlen(author)))
60 return;
61
62 namebuf = ident.name_begin;
63 mailbuf = ident.mail_begin;
64 namelen = ident.name_end - ident.name_begin;
65 maillen = ident.mail_end - ident.mail_begin;
66
67 map_user(&log->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
68 strbuf_add(&namemailbuf, namebuf, namelen);
69
70 if (log->email)
71 strbuf_addf(&namemailbuf, " <%.*s>", (int)maillen, mailbuf);
72
73 item = string_list_insert(&log->list, namemailbuf.buf);
74
75 if (log->summary)
76 item->util = (void *)(UTIL_TO_INT(item) + 1);
77 else {
78 const char *dot3 = log->common_repo_prefix;
79 char *buffer, *p;
80 struct strbuf subject = STRBUF_INIT;
81 const char *eol;
82
83 /* Skip any leading whitespace, including any blank lines. */
84 while (*oneline && isspace(*oneline))
85 oneline++;
86 eol = strchr(oneline, '\n');
87 if (!eol)
88 eol = oneline + strlen(oneline);
89 if (starts_with(oneline, "[PATCH")) {
90 char *eob = strchr(oneline, ']');
91 if (eob && (!eol || eob < eol))
92 oneline = eob + 1;
93 }
94 while (*oneline && isspace(*oneline) && *oneline != '\n')
95 oneline++;
96 format_subject(&subject, oneline, " ");
97 buffer = strbuf_detach(&subject, NULL);
98
99 if (dot3) {
100 int dot3len = strlen(dot3);
101 if (dot3len > 5) {
102 while ((p = strstr(buffer, dot3)) != NULL) {
103 int taillen = strlen(p) - dot3len;
104 memcpy(p, "/.../", 5);
105 memmove(p + 5, p + dot3len, taillen + 1);
106 }
107 }
108 }
109
110 if (item->util == NULL)
111 item->util = xcalloc(1, sizeof(struct string_list));
112 string_list_append(item->util, buffer);
113 }
114}
115
116static void read_from_stdin(struct shortlog *log)
117{
118 struct strbuf author = STRBUF_INIT;
119 struct strbuf oneline = STRBUF_INIT;
120 static const char *author_match[2] = { "Author: ", "author " };
121 static const char *committer_match[2] = { "Commit: ", "committer " };
122 const char **match;
123
124 match = log->committer ? committer_match : author_match;
125 while (strbuf_getline_lf(&author, stdin) != EOF) {
126 const char *v;
127 if (!skip_prefix(author.buf, match[0], &v) &&
128 !skip_prefix(author.buf, match[1], &v))
129 continue;
130 while (strbuf_getline_lf(&oneline, stdin) != EOF &&
131 oneline.len)
132 ; /* discard headers */
133 while (strbuf_getline_lf(&oneline, stdin) != EOF &&
134 !oneline.len)
135 ; /* discard blanks */
136 insert_one_record(log, v, oneline.buf);
137 }
138 strbuf_release(&author);
139 strbuf_release(&oneline);
140}
141
142void shortlog_add_commit(struct shortlog *log, struct commit *commit)
143{
144 struct strbuf author = STRBUF_INIT;
145 struct strbuf oneline = STRBUF_INIT;
146 struct pretty_print_context ctx = {0};
147 const char *fmt;
148
149 ctx.fmt = CMIT_FMT_USERFORMAT;
150 ctx.abbrev = log->abbrev;
151 ctx.subject = "";
152 ctx.date_mode.type = DATE_NORMAL;
153 ctx.output_encoding = get_log_output_encoding();
154
155 fmt = log->committer ? "%cn <%ce>" : "%an <%ae>";
156
157 format_commit_message(commit, fmt, &author, &ctx);
158 if (!log->summary) {
159 if (log->user_format)
160 pretty_print_commit(&ctx, commit, &oneline);
161 else
162 format_commit_message(commit, "%s", &oneline, &ctx);
163 }
164
165 insert_one_record(log, author.buf, oneline.len ? oneline.buf : "<none>");
166
167 strbuf_release(&author);
168 strbuf_release(&oneline);
169}
170
171static void get_from_rev(struct rev_info *rev, struct shortlog *log)
172{
173 struct commit *commit;
174
175 if (prepare_revision_walk(rev))
176 die(_("revision walk setup failed"));
177 while ((commit = get_revision(rev)) != NULL)
178 shortlog_add_commit(log, commit);
179}
180
181static int parse_uint(char const **arg, int comma, int defval)
182{
183 unsigned long ul;
184 int ret;
185 char *endp;
186
187 ul = strtoul(*arg, &endp, 10);
188 if (*endp && *endp != comma)
189 return -1;
190 if (ul > INT_MAX)
191 return -1;
192 ret = *arg == endp ? defval : (int)ul;
193 *arg = *endp ? endp + 1 : endp;
194 return ret;
195}
196
197static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
198#define DEFAULT_WRAPLEN 76
199#define DEFAULT_INDENT1 6
200#define DEFAULT_INDENT2 9
201
202static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
203{
204 struct shortlog *log = opt->value;
205
206 log->wrap_lines = !unset;
207 if (unset)
208 return 0;
209 if (!arg) {
210 log->wrap = DEFAULT_WRAPLEN;
211 log->in1 = DEFAULT_INDENT1;
212 log->in2 = DEFAULT_INDENT2;
213 return 0;
214 }
215
216 log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
217 log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
218 log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
219 if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
220 return error(wrap_arg_usage);
221 if (log->wrap &&
222 ((log->in1 && log->wrap <= log->in1) ||
223 (log->in2 && log->wrap <= log->in2)))
224 return error(wrap_arg_usage);
225 return 0;
226}
227
228void shortlog_init(struct shortlog *log)
229{
230 memset(log, 0, sizeof(*log));
231
232 read_mailmap(&log->mailmap, &log->common_repo_prefix);
233
234 log->list.strdup_strings = 1;
235 log->wrap = DEFAULT_WRAPLEN;
236 log->in1 = DEFAULT_INDENT1;
237 log->in2 = DEFAULT_INDENT2;
238}
239
240int cmd_shortlog(int argc, const char **argv, const char *prefix)
241{
242 struct shortlog log = { STRING_LIST_INIT_NODUP };
243 struct rev_info rev;
244 int nongit = !startup_info->have_repository;
245
246 const struct option options[] = {
247 OPT_BOOL('c', "committer", &log.committer,
248 N_("Group by committer rather than author")),
249 OPT_BOOL('n', "numbered", &log.sort_by_number,
250 N_("sort output according to the number of commits per author")),
251 OPT_BOOL('s', "summary", &log.summary,
252 N_("Suppress commit descriptions, only provides commit count")),
253 OPT_BOOL('e', "email", &log.email,
254 N_("Show the email address of each author")),
255 { OPTION_CALLBACK, 'w', NULL, &log, N_("w[,i1[,i2]]"),
256 N_("Linewrap output"), PARSE_OPT_OPTARG, &parse_wrap_args },
257 OPT_END(),
258 };
259
260 struct parse_opt_ctx_t ctx;
261
262 git_config(git_default_config, NULL);
263 shortlog_init(&log);
264 init_revisions(&rev, prefix);
265 parse_options_start(&ctx, argc, argv, prefix, options,
266 PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
267
268 for (;;) {
269 switch (parse_options_step(&ctx, options, shortlog_usage)) {
270 case PARSE_OPT_HELP:
271 exit(129);
272 case PARSE_OPT_DONE:
273 goto parse_done;
274 }
275 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
276 }
277parse_done:
278 argc = parse_options_end(&ctx);
279
280 if (setup_revisions(argc, argv, &rev, NULL) != 1) {
281 error(_("unrecognized argument: %s"), argv[1]);
282 usage_with_options(shortlog_usage, options);
283 }
284
285 log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
286 log.abbrev = rev.abbrev;
287 log.file = rev.diffopt.file;
288
289 /* assume HEAD if from a tty */
290 if (!nongit && !rev.pending.nr && isatty(0))
291 add_head_to_pending(&rev);
292 if (rev.pending.nr == 0) {
293 if (isatty(0))
294 fprintf(stderr, _("(reading log message from standard input)\n"));
295 read_from_stdin(&log);
296 }
297 else
298 get_from_rev(&rev, &log);
299
300 shortlog_output(&log);
301 if (log.file != stdout)
302 fclose(log.file);
303 return 0;
304}
305
306static void add_wrapped_shortlog_msg(struct strbuf *sb, const char *s,
307 const struct shortlog *log)
308{
309 strbuf_add_wrapped_text(sb, s, log->in1, log->in2, log->wrap);
310 strbuf_addch(sb, '\n');
311}
312
313void shortlog_output(struct shortlog *log)
314{
315 int i, j;
316 struct strbuf sb = STRBUF_INIT;
317
318 if (log->sort_by_number)
319 QSORT(log->list.items, log->list.nr,
320 log->summary ? compare_by_counter : compare_by_list);
321 for (i = 0; i < log->list.nr; i++) {
322 const struct string_list_item *item = &log->list.items[i];
323 if (log->summary) {
324 fprintf(log->file, "%6d\t%s\n",
325 (int)UTIL_TO_INT(item), item->string);
326 } else {
327 struct string_list *onelines = item->util;
328 fprintf(log->file, "%s (%d):\n",
329 item->string, onelines->nr);
330 for (j = onelines->nr - 1; j >= 0; j--) {
331 const char *msg = onelines->items[j].string;
332
333 if (log->wrap_lines) {
334 strbuf_reset(&sb);
335 add_wrapped_shortlog_msg(&sb, msg, log);
336 fwrite(sb.buf, sb.len, 1, log->file);
337 }
338 else
339 fprintf(log->file, " %s\n", msg);
340 }
341 putc('\n', log->file);
342 onelines->strdup_strings = 1;
343 string_list_clear(onelines, 0);
344 free(onelines);
345 }
346
347 log->list.items[i].util = NULL;
348 }
349
350 strbuf_release(&sb);
351 log->list.strdup_strings = 1;
352 string_list_clear(&log->list, 1);
353 clear_mailmap(&log->mailmap);
354}