ui-stats: enable path-filtered stats

When a path is specified on the querystring the commit statistics will
now be filtered by this path.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 15 insertions, 3 deletions

diff --git a/ui-stats.c b/ui-stats.c
index 9150840..3cc8d70 100644
--- a/ui-stats.c
+++ b/ui-stats.c
@@ -6,375 +6,387 @@
 
 struct Period {
         const char code;
         const char *name;
         int max_periods;
         int count;
 
         /* Convert a tm value to the first day in the period */
         void (*trunc)(struct tm *tm);
 
         /* Update tm value to start of next/previous period */
         void (*dec)(struct tm *tm);
         void (*inc)(struct tm *tm);
 
         /* Pretty-print a tm value */
         char *(*pretty)(struct tm *tm);
 };
 
 struct authorstat {
         long total;
         struct string_list list;
 };
 
 #define DAY_SECS (60 * 60 * 24)
 #define WEEK_SECS (DAY_SECS * 7)
 
 static void trunc_week(struct tm *tm)
 {
         time_t t = timegm(tm);
         t -= ((tm->tm_wday + 6) % 7) * DAY_SECS;
                 gmtime_r(&t, tm);
 }
 
 static void dec_week(struct tm *tm)
 {
         time_t t = timegm(tm);
         t -= WEEK_SECS;
                 gmtime_r(&t, tm);
 }
 
 static void inc_week(struct tm *tm)
 {
         time_t t = timegm(tm);
         t += WEEK_SECS;
                 gmtime_r(&t, tm);
 }
 
 static char *pretty_week(struct tm *tm)
 {
         static char buf[10];
 
         strftime(buf, sizeof(buf), "W%V %G", tm);
         return buf;
 }
 
 static void trunc_month(struct tm *tm)
 {
         tm->tm_mday = 1;
 }
 
 static void dec_month(struct tm *tm)
 {
         tm->tm_mon--;
         if (tm->tm_mon < 0) {
                 tm->tm_year--;
                 tm->tm_mon = 11;
         }
 }
 
 static void inc_month(struct tm *tm)
 {
         tm->tm_mon++;
         if (tm->tm_mon > 11) {
                 tm->tm_year++;
                 tm->tm_mon = 0;
         }
 }
 
 static char *pretty_month(struct tm *tm)
 {
         static const char *months[] = {
                 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
                 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
         };
         return fmt("%s %d", months[tm->tm_mon], tm->tm_year + 1900);
 }
 
 static void trunc_quarter(struct tm *tm)
 {
         trunc_month(tm);
         while(tm->tm_mon % 3 != 0)
                 dec_month(tm);
 }
 
 static void dec_quarter(struct tm *tm)
 {
         dec_month(tm);
         dec_month(tm);
         dec_month(tm);
 }
 
 static void inc_quarter(struct tm *tm)
 {
         inc_month(tm);
         inc_month(tm);
         inc_month(tm);
 }
 
 static char *pretty_quarter(struct tm *tm)
 {
         return fmt("Q%d %d", tm->tm_mon / 3 + 1, tm->tm_year + 1900);
 }
 
 static void trunc_year(struct tm *tm)
 {
         trunc_month(tm);
         tm->tm_mon = 0;
 }
 
 static void dec_year(struct tm *tm)
 {
         tm->tm_year--;
 }
 
 static void inc_year(struct tm *tm)
 {
         tm->tm_year++;
 }
 
 static char *pretty_year(struct tm *tm)
 {
         return fmt("%d", tm->tm_year + 1900);
 }
 
 struct Period periods[] = {
         {'w', "week", 12, 4, trunc_week, dec_week, inc_week, pretty_week},
         {'m', "month", 12, 4, trunc_month, dec_month, inc_month, pretty_month},
         {'q', "quarter", 12, 4, trunc_quarter, dec_quarter, inc_quarter, pretty_quarter},
         {'y', "year", 12, 4, trunc_year, dec_year, inc_year, pretty_year},
 };
 
 static void add_commit(struct string_list *authors, struct commit *commit,
         struct Period *period)
 {
         struct commitinfo *info;
         struct string_list_item *author, *item;
         struct authorstat *authorstat;
         struct string_list *items;
         char *tmp;
         struct tm *date;
         time_t t;
 
         info = cgit_parse_commit(commit);
         tmp = xstrdup(info->author);
         author = string_list_insert(tmp, authors);
         if (!author->util)
                 author->util = xcalloc(1, sizeof(struct authorstat));
         else
                 free(tmp);
         authorstat = author->util;
         items = &authorstat->list;
         t = info->committer_date;
         date = gmtime(&t);
         period->trunc(date);
         tmp = xstrdup(period->pretty(date));
         item = string_list_insert(tmp, items);
         if (item->util)
                 free(tmp);
         item->util++;
         authorstat->total++;
         cgit_free_commitinfo(info);
 }
 
 static int cmp_total_commits(const void *a1, const void *a2)
 {
         const struct string_list_item *i1 = a1;
         const struct string_list_item *i2 = a2;
         const struct authorstat *auth1 = i1->util;
         const struct authorstat *auth2 = i2->util;
 
         return auth2->total - auth1->total;
 }
 
 /* Walk the commit DAG and collect number of commits per author per
  * timeperiod into a nested string_list collection.
  */
 struct string_list collect_stats(struct cgit_context *ctx,
         struct Period *period)
 {
         struct string_list authors;
         struct rev_info rev;
         struct commit *commit;
-        const char *argv[] = {NULL, ctx->qry.head, NULL, NULL};
+        const char *argv[] = {NULL, ctx->qry.head, NULL, NULL, NULL, NULL};
+        int argc = 3;
         time_t now;
         long i;
         struct tm *tm;
         char tmp[11];
 
         time(&now);
         tm = gmtime(&now);
         period->trunc(tm);
         for (i = 1; i < period->count; i++)
                 period->dec(tm);
         strftime(tmp, sizeof(tmp), "%Y-%m-%d", tm);
         argv[2] = xstrdup(fmt("--since=%s", tmp));
+        if (ctx->qry.path) {
+                argv[3] = "--";
+                argv[4] = ctx->qry.path;
+                argc += 2;
+        }
         init_revisions(&rev, NULL);
         rev.abbrev = DEFAULT_ABBREV;
         rev.commit_format = CMIT_FMT_DEFAULT;
         rev.no_merges = 1;
         rev.verbose_header = 1;
         rev.show_root_diff = 0;
-        setup_revisions(3, argv, &rev, NULL);
+        setup_revisions(argc, argv, &rev, NULL);
         prepare_revision_walk(&rev);
         memset(&authors, 0, sizeof(authors));
         while ((commit = get_revision(&rev)) != NULL) {
                 add_commit(&authors, commit, period);
                 free(commit->buffer);
                 free_commit_list(commit->parents);
         }
         return authors;
 }
 
 void print_combined_authorrow(struct string_list *authors, int from, int to,
         const char *name, const char *leftclass, const char *centerclass,
         const char *rightclass, struct Period *period)
 {
         struct string_list_item *author;
         struct authorstat *authorstat;
         struct string_list *items;
         struct string_list_item *date;
         time_t now;
         long i, j, total, subtotal;
         struct tm *tm;
         char *tmp;
 
         time(&now);
         tm = gmtime(&now);
         period->trunc(tm);
         for (i = 1; i < period->count; i++)
                 period->dec(tm);
 
         total = 0;
         htmlf("<tr><td class='%s'>%s</td>", leftclass,
                 fmt(name, to - from + 1));
         for (j = 0; j < period->count; j++) {
                 tmp = period->pretty(tm);
                 period->inc(tm);
                 subtotal = 0;
                 for (i = from; i <= to; i++) {
                         author = &authors->items[i];
                         authorstat = author->util;
                         items = &authorstat->list;
                         date = string_list_lookup(tmp, items);
                         if (date)
                                 subtotal += (size_t)date->util;
                 }
                 htmlf("<td class='%s'>%d</td>", centerclass, subtotal);
                 total += subtotal;
         }
         htmlf("<td class='%s'>%d</td></tr>", rightclass, total);
 }
 
 void print_authors(struct string_list *authors, int top, struct Period *period)
 {
         struct string_list_item *author;
         struct authorstat *authorstat;
         struct string_list *items;
         struct string_list_item *date;
         time_t now;
         long i, j, total;
         struct tm *tm;
         char *tmp;
 
         time(&now);
         tm = gmtime(&now);
         period->trunc(tm);
         for (i = 1; i < period->count; i++)
                 period->dec(tm);
 
         html("<table class='stats'><tr><th>Author</th>");
         for (j = 0; j < period->count; j++) {
                 tmp = period->pretty(tm);
                 htmlf("<th>%s</th>", tmp);
                 period->inc(tm);
         }
         html("<th>Total</th></tr>\n");
 
         if (top <= 0 || top > authors->nr)
                 top = authors->nr;
 
         for (i = 0; i < top; i++) {
                 author = &authors->items[i];
                 html("<tr><td class='left'>");
                 html_txt(author->string);
                 html("</td>");
                 authorstat = author->util;
                 items = &authorstat->list;
                 total = 0;
                 for (j = 0; j < period->count; j++)
                         period->dec(tm);
                 for (j = 0; j < period->count; j++) {
                         tmp = period->pretty(tm);
                         period->inc(tm);
                         date = string_list_lookup(tmp, items);
                         if (!date)
                                 html("<td>0</td>");
                         else {
                                 htmlf("<td>%d</td>", date->util);
                                 total += (size_t)date->util;
                         }
                 }
                 htmlf("<td class='sum'>%d</td></tr>", total);
         }
 
         if (top < authors->nr)
                 print_combined_authorrow(authors, top, authors->nr - 1,
                         "Others (%d)", "left", "", "sum", period);
 
         print_combined_authorrow(authors, 0, authors->nr - 1, "Total",
                 "total", "sum", "sum", period);
         html("</table>");
 }
 
 /* Create a sorted string_list with one entry per author. The util-field
  * for each author is another string_list which is used to calculate the
  * number of commits per time-interval.
  */
 void cgit_show_stats(struct cgit_context *ctx)
 {
         struct string_list authors;
         struct Period *period;
         int top, i;
 
         period = &periods[0];
         if (ctx->qry.period) {
                 for (i = 0; i < sizeof(periods) / sizeof(periods[0]); i++)
                         if (periods[i].code == ctx->qry.period[0]) {
                                 period = &periods[i];
                                 break;
                         }
         }
         authors = collect_stats(ctx, period);
         qsort(authors.items, authors.nr, sizeof(struct string_list_item),
                 cmp_total_commits);
 
         top = ctx->qry.ofs;
         if (!top)
                 top = 10;
-        htmlf("<h2>Commits per author per %s</h2>", period->name);
+        htmlf("<h2>Commits per author per %s", period->name);
+        if (ctx->qry.path) {
+                html(" (path '");
+                html_txt(ctx->qry.path);
+                html("')");
+        }
+        html("</h2>");
 
         html("<form method='get' action='.' style='float: right; text-align: right;'>");
         if (strcmp(ctx->qry.head, ctx->repo->defbranch))
                 htmlf("<input type='hidden' name='h' value='%s'/>", ctx->qry.head);
         html("Period: ");
         html("<select name='period' onchange='this.form.submit();'>");
         for (i = 0; i < sizeof(periods) / sizeof(periods[0]); i++)
                 htmlf("<option value='%c'%s>%s</option>",
                         periods[i].code,
                         period == &periods[i] ? " selected" : "",
                         periods[i].name);
         html("</select><br/><br/>");
         html("Authors: ");
         html("");
         html("<select name='ofs' onchange='this.form.submit();'>");
         htmlf("<option value='10'%s>10</option>", top == 10 ? " selected" : "");
         htmlf("<option value='25'%s>25</option>", top == 25 ? " selected" : "");
         htmlf("<option value='50'%s>50</option>", top == 50 ? " selected" : "");
         htmlf("<option value='100'%s>100</option>", top == 100 ? " selected" : "");
         htmlf("<option value='-1'%s>All</option>", top == -1 ? " selected" : "");
         html("</select>");
         html("<noscript>&nbsp;&nbsp;<input type='submit' value='Reload'/></noscript>");
         html("</form>");
         print_authors(&authors, top, period);
 }