gitk: Second try to work around the command line limit on Windows
[git/dscho.git] / builtin / shortlog.c
blob06320f5285988365b8340e110427866e68536b47
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"
12 static char const * const shortlog_usage[] = {
13 "git shortlog [-n] [-s] [-e] [-w] [rev-opts] [--] [<commit-id>... ]",
14 "",
15 "[rev-opts] are documented in git-rev-list(1)",
16 NULL
19 static int compare_by_number(const void *a1, const void *a2)
21 const struct string_list_item *i1 = a1, *i2 = a2;
22 const struct string_list *l1 = i1->util, *l2 = i2->util;
24 if (l1->nr < l2->nr)
25 return 1;
26 else if (l1->nr == l2->nr)
27 return 0;
28 else
29 return -1;
32 const char *format_subject(struct strbuf *sb, const char *msg,
33 const char *line_separator);
35 static void insert_one_record(struct shortlog *log,
36 const char *author,
37 const char *oneline)
39 const char *dot3 = log->common_repo_prefix;
40 char *buffer, *p;
41 struct string_list_item *item;
42 char namebuf[1024];
43 char emailbuf[1024];
44 size_t len;
45 const char *eol;
46 const char *boemail, *eoemail;
47 struct strbuf subject = STRBUF_INIT;
49 boemail = strchr(author, '<');
50 if (!boemail)
51 return;
52 eoemail = strchr(boemail, '>');
53 if (!eoemail)
54 return;
56 /* copy author name to namebuf, to support matching on both name and email */
57 memcpy(namebuf, author, boemail - author);
58 len = boemail - author;
59 while (len > 0 && isspace(namebuf[len-1]))
60 len--;
61 namebuf[len] = 0;
63 /* copy email name to emailbuf, to allow email replacement as well */
64 memcpy(emailbuf, boemail+1, eoemail - boemail);
65 emailbuf[eoemail - boemail - 1] = 0;
67 if (!map_user(&log->mailmap, emailbuf, sizeof(emailbuf), namebuf, sizeof(namebuf))) {
68 while (author < boemail && isspace(*author))
69 author++;
70 for (len = 0;
71 len < sizeof(namebuf) - 1 && author + len < boemail;
72 len++)
73 namebuf[len] = author[len];
74 while (0 < len && isspace(namebuf[len-1]))
75 len--;
76 namebuf[len] = '\0';
78 else
79 len = strlen(namebuf);
81 if (log->email) {
82 size_t room = sizeof(namebuf) - len - 1;
83 int maillen = strlen(emailbuf);
84 snprintf(namebuf + len, room, " <%.*s>", maillen, emailbuf);
87 item = string_list_insert(namebuf, &log->list);
88 if (item->util == NULL)
89 item->util = xcalloc(1, sizeof(struct string_list));
91 /* Skip any leading whitespace, including any blank lines. */
92 while (*oneline && isspace(*oneline))
93 oneline++;
94 eol = strchr(oneline, '\n');
95 if (!eol)
96 eol = oneline + strlen(oneline);
97 if (!prefixcmp(oneline, "[PATCH")) {
98 char *eob = strchr(oneline, ']');
99 if (eob && (!eol || eob < eol))
100 oneline = eob + 1;
102 while (*oneline && isspace(*oneline) && *oneline != '\n')
103 oneline++;
104 format_subject(&subject, oneline, " ");
105 buffer = strbuf_detach(&subject, NULL);
107 if (dot3) {
108 int dot3len = strlen(dot3);
109 if (dot3len > 5) {
110 while ((p = strstr(buffer, dot3)) != NULL) {
111 int taillen = strlen(p) - dot3len;
112 memcpy(p, "/.../", 5);
113 memmove(p + 5, p + dot3len, taillen + 1);
118 string_list_append(buffer, item->util);
121 static void read_from_stdin(struct shortlog *log)
123 char author[1024], oneline[1024];
125 while (fgets(author, sizeof(author), stdin) != NULL) {
126 if (!(author[0] == 'A' || author[0] == 'a') ||
127 prefixcmp(author + 1, "uthor: "))
128 continue;
129 while (fgets(oneline, sizeof(oneline), stdin) &&
130 oneline[0] != '\n')
131 ; /* discard headers */
132 while (fgets(oneline, sizeof(oneline), stdin) &&
133 oneline[0] == '\n')
134 ; /* discard blanks */
135 insert_one_record(log, author + 8, oneline);
139 void shortlog_add_commit(struct shortlog *log, struct commit *commit)
141 const char *author = NULL, *buffer;
142 struct strbuf buf = STRBUF_INIT;
143 struct strbuf ufbuf = STRBUF_INIT;
144 struct pretty_print_context ctx = {0};
146 pretty_print_commit(CMIT_FMT_RAW, commit, &buf, &ctx);
147 buffer = buf.buf;
148 while (*buffer && *buffer != '\n') {
149 const char *eol = strchr(buffer, '\n');
151 if (eol == NULL)
152 eol = buffer + strlen(buffer);
153 else
154 eol++;
156 if (!prefixcmp(buffer, "author "))
157 author = buffer + 7;
158 buffer = eol;
160 if (!author)
161 die("Missing author: %s",
162 sha1_to_hex(commit->object.sha1));
163 if (log->user_format) {
164 struct pretty_print_context ctx = {0};
165 ctx.abbrev = DEFAULT_ABBREV;
166 ctx.subject = "";
167 ctx.after_subject = "";
168 ctx.date_mode = DATE_NORMAL;
169 pretty_print_commit(CMIT_FMT_USERFORMAT, commit, &ufbuf, &ctx);
170 buffer = ufbuf.buf;
171 } else if (*buffer) {
172 buffer++;
174 insert_one_record(log, author, !*buffer ? "<none>" : buffer);
175 strbuf_release(&ufbuf);
176 strbuf_release(&buf);
179 static void get_from_rev(struct rev_info *rev, struct shortlog *log)
181 struct commit *commit;
183 if (prepare_revision_walk(rev))
184 die("revision walk setup failed");
185 while ((commit = get_revision(rev)) != NULL)
186 shortlog_add_commit(log, commit);
189 static int parse_uint(char const **arg, int comma, int defval)
191 unsigned long ul;
192 int ret;
193 char *endp;
195 ul = strtoul(*arg, &endp, 10);
196 if (*endp && *endp != comma)
197 return -1;
198 if (ul > INT_MAX)
199 return -1;
200 ret = *arg == endp ? defval : (int)ul;
201 *arg = *endp ? endp + 1 : endp;
202 return ret;
205 static const char wrap_arg_usage[] = "-w[<width>[,<indent1>[,<indent2>]]]";
206 #define DEFAULT_WRAPLEN 76
207 #define DEFAULT_INDENT1 6
208 #define DEFAULT_INDENT2 9
210 static int parse_wrap_args(const struct option *opt, const char *arg, int unset)
212 struct shortlog *log = opt->value;
214 log->wrap_lines = !unset;
215 if (unset)
216 return 0;
217 if (!arg) {
218 log->wrap = DEFAULT_WRAPLEN;
219 log->in1 = DEFAULT_INDENT1;
220 log->in2 = DEFAULT_INDENT2;
221 return 0;
224 log->wrap = parse_uint(&arg, ',', DEFAULT_WRAPLEN);
225 log->in1 = parse_uint(&arg, ',', DEFAULT_INDENT1);
226 log->in2 = parse_uint(&arg, '\0', DEFAULT_INDENT2);
227 if (log->wrap < 0 || log->in1 < 0 || log->in2 < 0)
228 return error(wrap_arg_usage);
229 if (log->wrap &&
230 ((log->in1 && log->wrap <= log->in1) ||
231 (log->in2 && log->wrap <= log->in2)))
232 return error(wrap_arg_usage);
233 return 0;
236 void shortlog_init(struct shortlog *log)
238 memset(log, 0, sizeof(*log));
240 read_mailmap(&log->mailmap, &log->common_repo_prefix);
242 log->list.strdup_strings = 1;
243 log->wrap = DEFAULT_WRAPLEN;
244 log->in1 = DEFAULT_INDENT1;
245 log->in2 = DEFAULT_INDENT2;
248 int cmd_shortlog(int argc, const char **argv, const char *prefix)
250 static struct shortlog log;
251 static struct rev_info rev;
252 int nongit;
254 static const struct option options[] = {
255 OPT_BOOLEAN('n', "numbered", &log.sort_by_number,
256 "sort output according to the number of commits per author"),
257 OPT_BOOLEAN('s', "summary", &log.summary,
258 "Suppress commit descriptions, only provides commit count"),
259 OPT_BOOLEAN('e', "email", &log.email,
260 "Show the email address of each author"),
261 { OPTION_CALLBACK, 'w', NULL, &log, "w[,i1[,i2]]",
262 "Linewrap output", PARSE_OPT_OPTARG, &parse_wrap_args },
263 OPT_END(),
266 struct parse_opt_ctx_t ctx;
268 prefix = setup_git_directory_gently(&nongit);
269 git_config(git_default_config, NULL);
270 shortlog_init(&log);
271 init_revisions(&rev, prefix);
272 parse_options_start(&ctx, argc, argv, prefix, PARSE_OPT_KEEP_DASHDASH |
273 PARSE_OPT_KEEP_ARGV0);
275 for (;;) {
276 switch (parse_options_step(&ctx, options, shortlog_usage)) {
277 case PARSE_OPT_HELP:
278 exit(129);
279 case PARSE_OPT_DONE:
280 goto parse_done;
282 parse_revision_opt(&rev, &ctx, options, shortlog_usage);
284 parse_done:
285 argc = parse_options_end(&ctx);
287 if (setup_revisions(argc, argv, &rev, NULL) != 1) {
288 error("unrecognized argument: %s", argv[1]);
289 usage_with_options(shortlog_usage, options);
292 log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
294 /* assume HEAD if from a tty */
295 if (!nongit && !rev.pending.nr && isatty(0))
296 add_head_to_pending(&rev);
297 if (rev.pending.nr == 0) {
298 if (isatty(0))
299 fprintf(stderr, "(reading log message from standard input)\n");
300 read_from_stdin(&log);
302 else
303 get_from_rev(&rev, &log);
305 shortlog_output(&log);
306 return 0;
309 static void add_wrapped_shortlog_msg(struct strbuf *sb, const char *s,
310 const struct shortlog *log)
312 int col = strbuf_add_wrapped_text(sb, s, log->in1, log->in2, log->wrap);
313 if (col != log->wrap)
314 strbuf_addch(sb, '\n');
317 void shortlog_output(struct shortlog *log)
319 int i, j;
320 struct strbuf sb = STRBUF_INIT;
322 if (log->sort_by_number)
323 qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
324 compare_by_number);
325 for (i = 0; i < log->list.nr; i++) {
326 struct string_list *onelines = log->list.items[i].util;
328 if (log->summary) {
329 printf("%6d\t%s\n", onelines->nr, log->list.items[i].string);
330 } else {
331 printf("%s (%d):\n", log->list.items[i].string, onelines->nr);
332 for (j = onelines->nr - 1; j >= 0; j--) {
333 const char *msg = onelines->items[j].string;
335 if (log->wrap_lines) {
336 strbuf_reset(&sb);
337 add_wrapped_shortlog_msg(&sb, msg, log);
338 fwrite(sb.buf, sb.len, 1, stdout);
340 else
341 printf(" %s\n", msg);
343 putchar('\n');
346 onelines->strdup_strings = 1;
347 string_list_clear(onelines, 0);
348 free(onelines);
349 log->list.items[i].util = NULL;
352 strbuf_release(&sb);
353 log->list.strdup_strings = 1;
354 string_list_clear(&log->list, 1);
355 clear_mailmap(&log->mailmap);