Merge branch 'cr/git-work-tree-sans-git-dir' into maint
[git] / builtin / shortlog.c
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
12 static char const * const shortlog_usage[] = {
13         N_("git shortlog [<options>] [<revision range>] [[--] [<path>...]]"),
14         NULL
15 };
16
17 static int compare_by_number(const void *a1, const void *a2)
18 {
19         const struct string_list_item *i1 = a1, *i2 = a2;
20         const struct string_list *l1 = i1->util, *l2 = i2->util;
21
22         if (l1->nr < l2->nr)
23                 return 1;
24         else if (l1->nr == l2->nr)
25                 return 0;
26         else
27                 return -1;
28 }
29
30 static void insert_one_record(struct shortlog *log,
31                               const char *author,
32                               const char *oneline)
33 {
34         const char *dot3 = log->common_repo_prefix;
35         char *buffer, *p;
36         struct string_list_item *item;
37         const char *mailbuf, *namebuf;
38         size_t namelen, maillen;
39         const char *eol;
40         struct strbuf subject = STRBUF_INIT;
41         struct strbuf namemailbuf = STRBUF_INIT;
42         struct ident_split ident;
43
44         if (split_ident_line(&ident, author, strlen(author)))
45                 return;
46
47         namebuf = ident.name_begin;
48         mailbuf = ident.mail_begin;
49         namelen = ident.name_end - ident.name_begin;
50         maillen = ident.mail_end - ident.mail_begin;
51
52         map_user(&log->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
53         strbuf_add(&namemailbuf, namebuf, namelen);
54
55         if (log->email)
56                 strbuf_addf(&namemailbuf, " <%.*s>", (int)maillen, mailbuf);
57
58         item = string_list_insert(&log->list, namemailbuf.buf);
59         if (item->util == NULL)
60                 item->util = xcalloc(1, sizeof(struct string_list));
61
62         /* Skip any leading whitespace, including any blank lines. */
63         while (*oneline && isspace(*oneline))
64                 oneline++;
65         eol = strchr(oneline, '\n');
66         if (!eol)
67                 eol = oneline + strlen(oneline);
68         if (!prefixcmp(oneline, "[PATCH")) {
69                 char *eob = strchr(oneline, ']');
70                 if (eob && (!eol || eob < eol))
71                         oneline = eob + 1;
72         }
73         while (*oneline && isspace(*oneline) && *oneline != '\n')
74                 oneline++;
75         format_subject(&subject, oneline, " ");
76         buffer = strbuf_detach(&subject, NULL);
77
78         if (dot3) {
79                 int dot3len = strlen(dot3);
80                 if (dot3len > 5) {
81                         while ((p = strstr(buffer, dot3)) != NULL) {
82                                 int taillen = strlen(p) - dot3len;
83                                 memcpy(p, "/.../", 5);
84                                 memmove(p + 5, p + dot3len, taillen + 1);
85                         }
86                 }
87         }
88
89         string_list_append(item->util, buffer);
90 }
91
92 static void read_from_stdin(struct shortlog *log)
93 {
94         char author[1024], oneline[1024];
95
96         while (fgets(author, sizeof(author), stdin) != NULL) {
97                 if (!(author[0] == 'A' || author[0] == 'a') ||
98                     prefixcmp(author + 1, "uthor: "))
99                         continue;
100                 while (fgets(oneline, sizeof(oneline), stdin) &&
101                        oneline[0] != '\n')
102                         ; /* discard headers */
103                 while (fgets(oneline, sizeof(oneline), stdin) &&
104                        oneline[0] == '\n')
105                         ; /* discard blanks */
106                 insert_one_record(log, author + 8, oneline);
107         }
108 }
109
110 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
111 {
112         const char *author = NULL, *buffer;
113         struct strbuf buf = STRBUF_INIT;
114         struct strbuf ufbuf = STRBUF_INIT;
115
116         pp_commit_easy(CMIT_FMT_RAW, commit, &buf);
117         buffer = buf.buf;
118         while (*buffer && *buffer != '\n') {
119                 const char *eol = strchr(buffer, '\n');
120
121                 if (eol == NULL)
122                         eol = buffer + strlen(buffer);
123                 else
124                         eol++;
125
126                 if (!prefixcmp(buffer, "author "))
127                         author = buffer + 7;
128                 buffer = eol;
129         }
130         if (!author)
131                 die(_("Missing author: %s"),
132                     sha1_to_hex(commit->object.sha1));
133         if (log->user_format) {
134                 struct pretty_print_context ctx = {0};
135                 ctx.fmt = CMIT_FMT_USERFORMAT;
136                 ctx.abbrev = log->abbrev;
137                 ctx.subject = "";
138                 ctx.after_subject = "";
139                 ctx.date_mode = DATE_NORMAL;
140                 pretty_print_commit(&ctx, commit, &ufbuf);
141                 buffer = ufbuf.buf;
142         } else if (*buffer) {
143                 buffer++;
144         }
145         insert_one_record(log, author, !*buffer ? "<none>" : buffer);
146         strbuf_release(&ufbuf);
147         strbuf_release(&buf);
148 }
149
150 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
151 {
152         struct commit *commit;
153
154         if (prepare_revision_walk(rev))
155                 die(_("revision walk setup failed"));
156         while ((commit = get_revision(rev)) != NULL)
157                 shortlog_add_commit(log, commit);
158 }
159
160 static int parse_uint(char const **arg, int comma, int defval)
161 {
162         unsigned long ul;
163         int ret;
164         char *endp;
165
166         ul = strtoul(*arg, &endp, 10);
167         if (*endp && *endp != comma)
168                 return -1;
169         if (ul > INT_MAX)
170                 return -1;
171         ret = *arg == endp ? defval : (int)ul;
172         *arg = *endp ? endp + 1 : endp;
173         return ret;
174 }
175
176 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
177 #define DEFAULT_WRAPLEN 76
178 #define DEFAULT_INDENT1 6
179 #define DEFAULT_INDENT2 9
180
181 static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
182 {
183         struct shortlog *log = opt->value;
184
185         log->wrap_lines = !unset;
186         if (unset)
187                 return 0;
188         if (!arg) {
189                 log->wrap = DEFAULT_WRAPLEN;
190                 log->in1 = DEFAULT_INDENT1;
191                 log->in2 = DEFAULT_INDENT2;
192                 return 0;
193         }
194
195         log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
196         log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
197         log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
198         if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
199                 return error(wrap_arg_usage);
200         if (log->wrap &&
201             ((log->in1 && log->wrap <= log->in1) ||
202              (log->in2 && log->wrap <= log->in2)))
203                 return error(wrap_arg_usage);
204         return 0;
205 }
206
207 void shortlog_init(struct shortlog *log)
208 {
209         memset(log, 0, sizeof(*log));
210
211         read_mailmap(&log->mailmap, &log->common_repo_prefix);
212
213         log->list.strdup_strings = 1;
214         log->wrap = DEFAULT_WRAPLEN;
215         log->in1 = DEFAULT_INDENT1;
216         log->in2 = DEFAULT_INDENT2;
217 }
218
219 int cmd_shortlog(int argc, const char **argv, const char *prefix)
220 {
221         static struct shortlog log;
222         static struct rev_info rev;
223         int nongit = !startup_info->have_repository;
224
225         static const struct option options[] = {
226                 OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
227                             N_("sort output according to the number of commits per author")),
228                 OPT_BOOLEAN('s', "summary", &log.summary,
229                             N_("Suppress commit descriptions, only provides commit count")),
230                 OPT_BOOLEAN('e', "email", &log.email,
231                             N_("Show the email address of each author")),
232                 { OPTION_CALLBACK, 'w', NULL, &log, N_("w[,i1[,i2]]"),
233                         N_("Linewrap output"), PARSE_OPT_OPTARG, &parse_wrap_args },
234                 OPT_END(),
235         };
236
237         struct parse_opt_ctx_t ctx;
238
239         git_config(git_default_config, NULL);
240         shortlog_init(&log);
241         init_revisions(&rev, prefix);
242         parse_options_start(&ctx, argc, argv, prefix, options,
243                             PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
244
245         for (;;) {
246                 switch (parse_options_step(&ctx, options, shortlog_usage)) {
247                 case PARSE_OPT_HELP:
248                         exit(129);
249                 case PARSE_OPT_DONE:
250                         goto parse_done;
251                 }
252                 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
253         }
254 parse_done:
255         argc = parse_options_end(&ctx);
256
257         if (setup_revisions(argc, argv, &rev, NULL) != 1) {
258                 error(_("unrecognized argument: %s"), argv[1]);
259                 usage_with_options(shortlog_usage, options);
260         }
261
262         log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
263         log.abbrev = rev.abbrev;
264
265         /* assume HEAD if from a tty */
266         if (!nongit && !rev.pending.nr && isatty(0))
267                 add_head_to_pending(&rev);
268         if (rev.pending.nr == 0) {
269                 if (isatty(0))
270                         fprintf(stderr, _("(reading log message from standard input)\n"));
271                 read_from_stdin(&log);
272         }
273         else
274                 get_from_rev(&rev, &log);
275
276         shortlog_output(&log);
277         return 0;
278 }
279
280 static void add_wrapped_shortlog_msg(struct strbuf *sb, const char *s,
281                                      const struct shortlog *log)
282 {
283         strbuf_add_wrapped_text(sb, s, log->in1, log->in2, log->wrap);
284         strbuf_addch(sb, '\n');
285 }
286
287 void shortlog_output(struct shortlog *log)
288 {
289         int i, j;
290         struct strbuf sb = STRBUF_INIT;
291
292         if (log->sort_by_number)
293                 qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
294                         compare_by_number);
295         for (i = 0; i < log->list.nr; i++) {
296                 struct string_list *onelines = log->list.items[i].util;
297
298                 if (log->summary) {
299                         printf("%6d\t%s\n", onelines->nr, log->list.items[i].string);
300                 } else {
301                         printf("%s (%d):\n", log->list.items[i].string, onelines->nr);
302                         for (j = onelines->nr - 1; j >= 0; j--) {
303                                 const char *msg = onelines->items[j].string;
304
305                                 if (log->wrap_lines) {
306                                         strbuf_reset(&sb);
307                                         add_wrapped_shortlog_msg(&sb, msg, log);
308                                         fwrite(sb.buf, sb.len, 1, stdout);
309                                 }
310                                 else
311                                         printf("      %s\n", msg);
312                         }
313                         putchar('\n');
314                 }
315
316                 onelines->strdup_strings = 1;
317                 string_list_clear(onelines, 0);
318                 free(onelines);
319                 log->list.items[i].util = NULL;
320         }
321
322         strbuf_release(&sb);
323         log->list.strdup_strings = 1;
324         string_list_clear(&log->list, 1);
325         clear_mailmap(&log->mailmap);
326 }