ui-stats.c

   1 #include "cgit.h"
   2 #include "ui-stats.h"
   3 #include "html.h"
   4 #include "ui-shared.h"
   5
   6 #ifdef NO_C99_FORMAT
   7 #define SZ_FMT "%u"
   8 #else
   9 #define SZ_FMT "%zu"
  10 #endif
  11
  12 struct authorstat {
  13         long total;
  14         struct string_list list;
  15 };
  16
  17 #define DAY_SECS (60 * 60 * 24)
  18 #define WEEK_SECS (DAY_SECS * 7)
  19
  20 static void trunc_week(struct tm *tm)
  21 {
  22         time_t t = timegm(tm);
  23         t -= ((tm->tm_wday + 6) % 7) * DAY_SECS;
  24         gmtime_r(&t, tm);
  25 }
  26
  27 static void dec_week(struct tm *tm)
  28 {
  29         time_t t = timegm(tm);
  30         t -= WEEK_SECS;
  31         gmtime_r(&t, tm);
  32 }
  33
  34 static void inc_week(struct tm *tm)
  35 {
  36         time_t t = timegm(tm);
  37         t += WEEK_SECS;
  38         gmtime_r(&t, tm);
  39 }
  40
  41 static char *pretty_week(struct tm *tm)
  42 {
  43         static char buf[10];
  44
  45         strftime(buf, sizeof(buf), "W%V %G", tm);
  46         return buf;
  47 }
  48
  49 static void trunc_month(struct tm *tm)
  50 {
  51         tm->tm_mday = 1;
  52 }
  53
  54 static void dec_month(struct tm *tm)
  55 {
  56         tm->tm_mon--;
  57         if (tm->tm_mon < 0) {
  58                 tm->tm_year--;
  59                 tm->tm_mon = 11;
  60         }
  61 }
  62
  63 static void inc_month(struct tm *tm)
  64 {
  65         tm->tm_mon++;
  66         if (tm->tm_mon > 11) {
  67                 tm->tm_year++;
  68                 tm->tm_mon = 0;
  69         }
  70 }
  71
  72 static char *pretty_month(struct tm *tm)
  73 {
  74         static const char *months[] = {
  75                 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  76                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
  77         };
  78         return fmt("%s %d", months[tm->tm_mon], tm->tm_year + 1900);
  79 }
  80
  81 static void trunc_quarter(struct tm *tm)
  82 {
  83         trunc_month(tm);
  84         while (tm->tm_mon % 3 != 0)
  85                 dec_month(tm);
  86 }
  87
  88 static void dec_quarter(struct tm *tm)
  89 {
  90         dec_month(tm);
  91         dec_month(tm);
  92         dec_month(tm);
  93 }
  94
  95 static void inc_quarter(struct tm *tm)
  96 {
  97         inc_month(tm);
  98         inc_month(tm);
  99         inc_month(tm);
 100 }
 101
 102 static char *pretty_quarter(struct tm *tm)
 103 {
 104         return fmt("Q%d %d", tm->tm_mon / 3 + 1, tm->tm_year + 1900);
 105 }
 106
 107 static void trunc_year(struct tm *tm)
 108 {
 109         trunc_month(tm);
 110         tm->tm_mon = 0;
 111 }
 112
 113 static void dec_year(struct tm *tm)
 114 {
 115         tm->tm_year--;
 116 }
 117
 118 static void inc_year(struct tm *tm)
 119 {
 120         tm->tm_year++;
 121 }
 122
 123 static char *pretty_year(struct tm *tm)
 124 {
 125         return fmt("%d", tm->tm_year + 1900);
 126 }
 127
 128 struct cgit_period periods[] = {
 129         {'w', "week", 12, 4, trunc_week, dec_week, inc_week, pretty_week},
 130         {'m', "month", 12, 4, trunc_month, dec_month, inc_month, pretty_month},
 131         {'q', "quarter", 12, 4, trunc_quarter, dec_quarter, inc_quarter, pretty_quarter},
 132         {'y', "year", 12, 4, trunc_year, dec_year, inc_year, pretty_year},
 133 };
 134
 135 /* Given a period code or name, return a period index (1, 2, 3 or 4)
 136  * and update the period pointer to the correcsponding struct.
 137  * If no matching code is found, return 0.
 138  */
 139 int cgit_find_stats_period(const char *expr, struct cgit_period **period)
 140 {
 141         int i;
 142         char code = '\0';
 143
 144         if (!expr)
 145                 return 0;
 146
 147         if (strlen(expr) == 1)
 148                 code = expr[0];
 149
 150         for (i = 0; i < sizeof(periods) / sizeof(periods[0]); i++)
 151                 if (periods[i].code == code || !strcmp(periods[i].name, expr)) {
 152                         if (period)
 153                                 *period = &periods[i];
 154                         return i + 1;
 155                 }
 156         return 0;
 157 }
 158
 159 const char *cgit_find_stats_periodname(int idx)
 160 {
 161         if (idx > 0 && idx < 4)
 162                 return periods[idx - 1].name;
 163         else
 164                 return "";
 165 }
 166
 167 static void add_commit(struct string_list *authors, struct commit *commit,
 168         struct cgit_period *period)
 169 {
 170         struct commitinfo *info;
 171         struct string_list_item *author, *item;
 172         struct authorstat *authorstat;
 173         struct string_list *items;
 174         char *tmp;
 175         struct tm *date;
 176         time_t t;
 177
 178         info = cgit_parse_commit(commit);
 179         tmp = xstrdup(info->author);
 180         author = string_list_insert(authors, tmp);
 181         if (!author->util)
 182                 author->util = xcalloc(1, sizeof(struct authorstat));
 183         else
 184                 free(tmp);
 185         authorstat = author->util;
 186         items = &authorstat->list;
 187         t = info->committer_date;
 188         date = gmtime(&t);
 189         period->trunc(date);
 190         tmp = xstrdup(period->pretty(date));
 191         item = string_list_insert(items, tmp);
 192         if (item->util)
 193                 free(tmp);
 194         item->util++;
 195         authorstat->total++;
 196         cgit_free_commitinfo(info);
 197 }
 198
 199 static int cmp_total_commits(const void *a1, const void *a2)
 200 {
 201         const struct string_list_item *i1 = a1;
 202         const struct string_list_item *i2 = a2;
 203         const struct authorstat *auth1 = i1->util;
 204         const struct authorstat *auth2 = i2->util;
 205
 206         return auth2->total - auth1->total;
 207 }
 208
 209 /* Walk the commit DAG and collect number of commits per author per
 210  * timeperiod into a nested string_list collection.
 211  */
 212 static struct string_list collect_stats(struct cgit_period *period)
 213 {
 214         struct string_list authors;
 215         struct rev_info rev;
 216         struct commit *commit;
 217         const char *argv[] = {NULL, ctx.qry.head, NULL, NULL, NULL, NULL};
 218         int argc = 3;
 219         time_t now;
 220         long i;
 221         struct tm *tm;
 222         char tmp[11];
 223
 224         time(&now);
 225         tm = gmtime(&now);
 226         period->trunc(tm);
 227         for (i = 1; i < period->count; i++)
 228                 period->dec(tm);
 229         strftime(tmp, sizeof(tmp), "%Y-%m-%d", tm);
 230         argv[2] = xstrdup(fmt("--since=%s", tmp));
 231         if (ctx.qry.path) {
 232                 argv[3] = "--";
 233                 argv[4] = ctx.qry.path;
 234                 argc += 2;
 235         }
 236         init_revisions(&rev, NULL);
 237         rev.abbrev = DEFAULT_ABBREV;
 238         rev.commit_format = CMIT_FMT_DEFAULT;
 239         rev.max_parents = 1;
 240         rev.verbose_header = 1;
 241         rev.show_root_diff = 0;
 242         setup_revisions(argc, argv, &rev, NULL);
 243         prepare_revision_walk(&rev);
 244         memset(&authors, 0, sizeof(authors));
 245         while ((commit = get_revision(&rev)) != NULL) {
 246                 add_commit(&authors, commit, period);
 247                 free(commit->buffer);
 248                 free_commit_list(commit->parents);
 249         }
 250         return authors;
 251 }
 252
 253 static void print_combined_authorrow(struct string_list *authors, int from,
 254                                      int to, const char *name,
 255                                      const char *leftclass,
 256                                      const char *centerclass,
 257                                      const char *rightclass,
 258                                      struct cgit_period *period)
 259 {
 260         struct string_list_item *author;
 261         struct authorstat *authorstat;
 262         struct string_list *items;
 263         struct string_list_item *date;
 264         time_t now;
 265         long i, j, total, subtotal;
 266         struct tm *tm;
 267         char *tmp;
 268
 269         time(&now);
 270         tm = gmtime(&now);
 271         period->trunc(tm);
 272         for (i = 1; i < period->count; i++)
 273                 period->dec(tm);
 274
 275         total = 0;
 276         htmlf("<tr><td class='%s'>%s</td>", leftclass,
 277                 fmt(name, to - from + 1));
 278         for (j = 0; j < period->count; j++) {
 279                 tmp = period->pretty(tm);
 280                 period->inc(tm);
 281                 subtotal = 0;
 282                 for (i = from; i <= to; i++) {
 283                         author = &authors->items[i];
 284                         authorstat = author->util;
 285                         items = &authorstat->list;
 286                         date = string_list_lookup(items, tmp);
 287                         if (date)
 288                                 subtotal += (size_t)date->util;
 289                 }
 290                 htmlf("<td class='%s'>%ld</td>", centerclass, subtotal);
 291                 total += subtotal;
 292         }
 293         htmlf("<td class='%s'>%ld</td></tr>", rightclass, total);
 294 }
 295
 296 static void print_authors(struct string_list *authors, int top,
 297                           struct cgit_period *period)
 298 {
 299         struct string_list_item *author;
 300         struct authorstat *authorstat;
 301         struct string_list *items;
 302         struct string_list_item *date;
 303         time_t now;
 304         long i, j, total;
 305         struct tm *tm;
 306         char *tmp;
 307
 308         time(&now);
 309         tm = gmtime(&now);
 310         period->trunc(tm);
 311         for (i = 1; i < period->count; i++)
 312                 period->dec(tm);
 313
 314         html("<table class='stats'><tr><th>Author</th>");
 315         for (j = 0; j < period->count; j++) {
 316                 tmp = period->pretty(tm);
 317                 htmlf("<th>%s</th>", tmp);
 318                 period->inc(tm);
 319         }
 320         html("<th>Total</th></tr>\n");
 321
 322         if (top <= 0 || top > authors->nr)
 323                 top = authors->nr;
 324
 325         for (i = 0; i < top; i++) {
 326                 author = &authors->items[i];
 327                 html("<tr><td class='left'>");
 328                 html_txt(author->string);
 329                 html("</td>");
 330                 authorstat = author->util;
 331                 items = &authorstat->list;
 332                 total = 0;
 333                 for (j = 0; j < period->count; j++)
 334                         period->dec(tm);
 335                 for (j = 0; j < period->count; j++) {
 336                         tmp = period->pretty(tm);
 337                         period->inc(tm);
 338                         date = string_list_lookup(items, tmp);
 339                         if (!date)
 340                                 html("<td>0</td>");
 341                         else {
 342                                 htmlf("<td>"SZ_FMT"</td>", (size_t)date->util);
 343                                 total += (size_t)date->util;
 344                         }
 345                 }
 346                 htmlf("<td class='sum'>%ld</td></tr>", total);
 347         }
 348
 349         if (top < authors->nr)
 350                 print_combined_authorrow(authors, top, authors->nr - 1,
 351                         "Others (%ld)", "left", "", "sum", period);
 352
 353         print_combined_authorrow(authors, 0, authors->nr - 1, "Total",
 354                 "total", "sum", "sum", period);
 355         html("</table>");
 356 }
 357
 358 /* Create a sorted string_list with one entry per author. The util-field
 359  * for each author is another string_list which is used to calculate the
 360  * number of commits per time-interval.
 361  */
 362 void cgit_show_stats(void)
 363 {
 364         struct string_list authors;
 365         struct cgit_period *period;
 366         int top, i;
 367         const char *code = "w";
 368
 369         if (ctx.qry.period)
 370                 code = ctx.qry.period;
 371
 372         i = cgit_find_stats_period(code, &period);
 373         if (!i) {
 374                 cgit_print_error("Unknown statistics type: %c", code[0]);
 375                 return;
 376         }
 377         if (i > ctx.repo->max_stats) {
 378                 cgit_print_error("Statistics type disabled: %s", period->name);
 379                 return;
 380         }
 381         authors = collect_stats(period);
 382         qsort(authors.items, authors.nr, sizeof(struct string_list_item),
 383                 cmp_total_commits);
 384
 385         top = ctx.qry.ofs;
 386         if (!top)
 387                 top = 10;
 388
 389         html("<div class='cgit-panel'>");
 390         html("<b>stat options</b>");
 391         html("<form method='get' action=''>");
 392         cgit_add_hidden_formfields(1, 0, "stats");
 393         html("<table><tr><td colspan='2'/></tr>");
 394         if (ctx.repo->max_stats > 1) {
 395                 html("<tr><td class='label'>Period:</td>");
 396                 html("<td class='ctrl'><select name='period' onchange='this.form.submit();'>");
 397                 for (i = 0; i < ctx.repo->max_stats; i++)
 398                         html_option(fmt("%c", periods[i].code),
 399                                     periods[i].name, fmt("%c", period->code));
 400                 html("</select></td></tr>");
 401         }
 402         html("<tr><td class='label'>Authors:</td>");
 403         html("<td class='ctrl'><select name='ofs' onchange='this.form.submit();'>");
 404         html_intoption(10, "10", top);
 405         html_intoption(25, "25", top);
 406         html_intoption(50, "50", top);
 407         html_intoption(100, "100", top);
 408         html_intoption(-1, "all", top);
 409         html("</select></td></tr>");
 410         html("<tr><td/><td class='ctrl'>");
 411         html("<noscript><input type='submit' value='Reload'/></noscript>");
 412         html("</td></tr></table>");
 413         html("</form>");
 414         html("</div>");
 415         htmlf("<h2>Commits per author per %s", period->name);
 416         if (ctx.qry.path) {
 417                 html(" (path '");
 418                 html_txt(ctx.qry.path);
 419                 html("')");
 420         }
 421         html("</h2>");
 422         print_authors(&authors, top, period);
 423 }
 424