ui-stats.c

   1 #include "cgit.h"
   2 #include "html.h"
   3 #include "ui-shared.h"
   4 #include "ui-stats.h"
   5
   6 #ifdef NO_C99_FORMAT
   7 #define SZ_FMT "%u"
   8 #else
   9 #define SZ_FMT "%zu"
  10 #endif
  11
  12 #define MONTHS 6
  13
  14 struct authorstat {
  15         long total;
  16         struct string_list list;
  17 };
  18
  19 #define DAY_SECS (60 * 60 * 24)
  20 #define WEEK_SECS (DAY_SECS * 7)
  21
  22 static void trunc_week(struct tm *tm)
  23 {
  24         time_t t = timegm(tm);
  25         t -= ((tm->tm_wday + 6) % 7) * DAY_SECS;
  26         gmtime_r(&t, tm);
  27 }
  28
  29 static void dec_week(struct tm *tm)
  30 {
  31         time_t t = timegm(tm);
  32         t -= WEEK_SECS;
  33         gmtime_r(&t, tm);
  34 }
  35
  36 static void inc_week(struct tm *tm)
  37 {
  38         time_t t = timegm(tm);
  39         t += WEEK_SECS;
  40         gmtime_r(&t, tm);
  41 }
  42
  43 static char *pretty_week(struct tm *tm)
  44 {
  45         static char buf[10];
  46
  47         strftime(buf, sizeof(buf), "W%V %G", tm);
  48         return buf;
  49 }
  50
  51 static void trunc_month(struct tm *tm)
  52 {
  53         tm->tm_mday = 1;
  54 }
  55
  56 static void dec_month(struct tm *tm)
  57 {
  58         tm->tm_mon--;
  59         if (tm->tm_mon < 0) {
  60                 tm->tm_year--;
  61                 tm->tm_mon = 11;
  62         }
  63 }
  64
  65 static void inc_month(struct tm *tm)
  66 {
  67         tm->tm_mon++;
  68         if (tm->tm_mon > 11) {
  69                 tm->tm_year++;
  70                 tm->tm_mon = 0;
  71         }
  72 }
  73
  74 static char *pretty_month(struct tm *tm)
  75 {
  76         static const char *months[] = {
  77                 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  78                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
  79         };
  80         return fmt("%s %d", months[tm->tm_mon], tm->tm_year + 1900);
  81 }
  82
  83 static void trunc_quarter(struct tm *tm)
  84 {
  85         trunc_month(tm);
  86         while(tm->tm_mon % 3 != 0)
  87                 dec_month(tm);
  88 }
  89
  90 static void dec_quarter(struct tm *tm)
  91 {
  92         dec_month(tm);
  93         dec_month(tm);
  94         dec_month(tm);
  95 }
  96
  97 static void inc_quarter(struct tm *tm)
  98 {
  99         inc_month(tm);
 100         inc_month(tm);
 101         inc_month(tm);
 102 }
 103
 104 static char *pretty_quarter(struct tm *tm)
 105 {
 106         return fmt("Q%d %d", tm->tm_mon / 3 + 1, tm->tm_year + 1900);
 107 }
 108
 109 static void trunc_year(struct tm *tm)
 110 {
 111         trunc_month(tm);
 112         tm->tm_mon = 0;
 113 }
 114
 115 static void dec_year(struct tm *tm)
 116 {
 117         tm->tm_year--;
 118 }
 119
 120 static void inc_year(struct tm *tm)
 121 {
 122         tm->tm_year++;
 123 }
 124
 125 static char *pretty_year(struct tm *tm)
 126 {
 127         return fmt("%d", tm->tm_year + 1900);
 128 }
 129
 130 struct cgit_period periods[] = {
 131         {'w', "week", 12, 4, trunc_week, dec_week, inc_week, pretty_week},
 132         {'m', "month", 12, 4, trunc_month, dec_month, inc_month, pretty_month},
 133         {'q', "quarter", 12, 4, trunc_quarter, dec_quarter, inc_quarter, pretty_quarter},
 134         {'y', "year", 12, 4, trunc_year, dec_year, inc_year, pretty_year},
 135 };
 136
 137 /* Given a period code or name, return a period index (1, 2, 3 or 4)
 138  * and update the period pointer to the correcsponding struct.
 139  * If no matching code is found, return 0.
 140  */
 141 int cgit_find_stats_period(const char *expr, struct cgit_period **period)
 142 {
 143         int i;
 144         char code = '\0';
 145
 146         if (!expr)
 147                 return 0;
 148
 149         if (strlen(expr) == 1)
 150                 code = expr[0];
 151
 152         for (i = 0; i < sizeof(periods) / sizeof(periods[0]); i++)
 153                 if (periods[i].code == code || !strcmp(periods[i].name, expr)) {
 154                         if (period)
 155                                 *period = &periods[i];
 156                         return i+1;
 157                 }
 158         return 0;
 159 }
 160
 161 const char *cgit_find_stats_periodname(int idx)
 162 {
 163         if (idx > 0 && idx < 4)
 164                 return periods[idx - 1].name;
 165         else
 166                 return "";
 167 }
 168
 169 static void add_commit(struct string_list *authors, struct commit *commit,
 170         struct cgit_period *period)
 171 {
 172         struct commitinfo *info;
 173         struct string_list_item *author, *item;
 174         struct authorstat *authorstat;
 175         struct string_list *items;
 176         char *tmp;
 177         struct tm *date;
 178         time_t t;
 179
 180         info = cgit_parse_commit(commit);
 181         tmp = xstrdup(info->author);
 182         author = string_list_insert(authors, tmp);
 183         if (!author->util)
 184                 author->util = xcalloc(1, sizeof(struct authorstat));
 185         else
 186                 free(tmp);
 187         authorstat = author->util;
 188         items = &authorstat->list;
 189         t = info->committer_date;
 190         date = gmtime(&t);
 191         period->trunc(date);
 192         tmp = xstrdup(period->pretty(date));
 193         item = string_list_insert(items, tmp);
 194         if (item->util)
 195                 free(tmp);
 196         item->util++;
 197         authorstat->total++;
 198         cgit_free_commitinfo(info);
 199 }
 200
 201 static int cmp_total_commits(const void *a1, const void *a2)
 202 {
 203         const struct string_list_item *i1 = a1;
 204         const struct string_list_item *i2 = a2;
 205         const struct authorstat *auth1 = i1->util;
 206         const struct authorstat *auth2 = i2->util;
 207
 208         return auth2->total - auth1->total;
 209 }
 210
 211 /* Walk the commit DAG and collect number of commits per author per
 212  * timeperiod into a nested string_list collection.
 213  */
 214 struct string_list collect_stats(struct cgit_context *ctx,
 215         struct cgit_period *period)
 216 {
 217         struct string_list authors;
 218         struct rev_info rev;
 219         struct commit *commit;
 220         const char *argv[] = {NULL, ctx->qry.head, NULL, NULL, NULL, NULL};
 221         int argc = 3;
 222         time_t now;
 223         long i;
 224         struct tm *tm;
 225         char tmp[11];
 226
 227         time(&now);
 228         tm = gmtime(&now);
 229         period->trunc(tm);
 230         for (i = 1; i < period->count; i++)
 231                 period->dec(tm);
 232         strftime(tmp, sizeof(tmp), "%Y-%m-%d", tm);
 233         argv[2] = xstrdup(fmt("--since=%s", tmp));
 234         if (ctx->qry.path) {
 235                 argv[3] = "--";
 236                 argv[4] = ctx->qry.path;
 237                 argc += 2;
 238         }
 239         init_revisions(&rev, NULL);
 240         rev.abbrev = DEFAULT_ABBREV;
 241         rev.commit_format = CMIT_FMT_DEFAULT;
 242         rev.no_merges = 1;
 243         rev.verbose_header = 1;
 244         rev.show_root_diff = 0;
 245         setup_revisions(argc, argv, &rev, NULL);
 246         prepare_revision_walk(&rev);
 247         memset(&authors, 0, sizeof(authors));
 248         while ((commit = get_revision(&rev)) != NULL) {
 249                 add_commit(&authors, commit, period);
 250                 free(commit->buffer);
 251                 free_commit_list(commit->parents);
 252         }
 253         return authors;
 254 }
 255
 256 void print_combined_authorrow(struct string_list *authors, int from, int to,
 257         const char *name, const char *leftclass, const char *centerclass,
 258         const char *rightclass, 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 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(struct cgit_context *ctx)
 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(fmt("Unknown statistics type: %c", code[0]));
 375                 return;
 376         }
 377         if (i > ctx->repo->max_stats) {
 378                 cgit_print_error(fmt("Statistics type disabled: %s",
 379                                      period->name));
 380                 return;
 381         }
 382         authors = collect_stats(ctx, period);
 383         qsort(authors.items, authors.nr, sizeof(struct string_list_item),
 384                 cmp_total_commits);
 385
 386         top = ctx->qry.ofs;
 387         if (!top)
 388                 top = 10;
 389
 390         html("<div class='cgit-panel'>");
 391         html("<b>stat options</b>");
 392         html("<form method='get' action=''>");
 393         cgit_add_hidden_formfields(1, 0, "stats");
 394         html("<table><tr><td colspan='2'/></tr>");
 395         if (ctx->repo->max_stats > 1) {
 396                 html("<tr><td class='label'>Period:</td>");
 397                 html("<td class='ctrl'><select name='period' onchange='this.form.submit();'>");
 398                 for (i = 0; i < ctx->repo->max_stats; i++)
 399                         html_option(fmt("%c", periods[i].code),
 400                                     periods[i].name, fmt("%c", period->code));
 401                 html("</select></td></tr>");
 402         }
 403         html("<tr><td class='label'>Authors:</td>");
 404         html("<td class='ctrl'><select name='ofs' onchange='this.form.submit();'>");
 405         html_intoption(10, "10", top);
 406         html_intoption(25, "25", top);
 407         html_intoption(50, "50", top);
 408         html_intoption(100, "100", top);
 409         html_intoption(-1, "all", top);
 410         html("</select></td><tr>");
 411         html("<tr><td/><td class='ctrl'>");
 412         html("<noscript><input type='submit' value='Reload'/></noscript>");
 413         html("</td></tr></table>");
 414         html("</form>");
 415         html("</div>");
 416         htmlf("<h2>Commits per author per %s", period->name);
 417         if (ctx->qry.path) {
 418                 html(" (path '");
 419                 html_txt(ctx->qry.path);
 420                 html("')");
 421         }
 422         html("</h2>");
 423         print_authors(&authors, top, period);
 424 }
 425