Add knobs to enable/disable files/lines changed in log view

These columns can cause lots of IO on the server, so add settings to
explicitly enable them. Also, add per repo settings to optionally disable
the columns if sitewide enabled.

While at it, do not allow repo.snapshot to enable snapshots if the global
setting is disabled.

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

cgit.h

@@ -38,6 +38,8 @@ struct repoinfo {
 	char *defbranch;
 	char *module_link;
 	int snapshots;
+	int enable_log_filecount;
+	int enable_log_linecount;
 };
 
 struct repolist {
@@ -81,6 +83,8 @@ extern char *cgit_cache_root;
 
 extern int cgit_nocache;
 extern int cgit_snapshots;
+extern int cgit_enable_log_filecount;
+extern int cgit_enable_log_linecount;
 extern int cgit_max_lock_attempts;
 extern int cgit_cache_root_ttl;
 extern int cgit_cache_repo_ttl;

cgitrc

@@ -12,6 +12,14 @@
 #snapshots=0
 
 
+## Enable/disable display of 'number of files changed' in log view
+#enable-log-filecount=0
+
+
+## Enable/disable display of 'number of lines changed' in log view
+#enable-log-linecount=0
+
+
 ## Specify a root for virtual urls. This makes cgit generate urls like
 ##
 ##    http://localhost/git/repo/log/?id=master
@@ -97,4 +105,6 @@
 #repo.path=/pub/git/cgit
 #repo.owner=Lars Hjemli
 #repo.snapshots=1				# override a sitewide snapshot-setting
+#repo.enable-log-filecount=0			# override the default filecount setting
+#repo.enable-log-linecount=0			# override the default linecount setting
 #repo.module-link=/git/%s/commit/?id=%s		# override the standard module-link

shared.c

@@ -22,6 +22,8 @@ char *cgit_cache_root   = "/var/cache/cgit";
 
 int cgit_nocache               =  0;
 int cgit_snapshots             =  0;
+int cgit_enable_log_filecount  =  0;
+int cgit_enable_log_linecount  =  0;
 int cgit_max_lock_attempts     =  5;
 int cgit_cache_root_ttl        =  5;
 int cgit_cache_repo_ttl        =  5;
@@ -85,6 +87,8 @@ struct repoinfo *add_repo(const char *url)
 	ret->owner = NULL;
 	ret->defbranch = "master";
 	ret->snapshots = cgit_snapshots;
+	ret->enable_log_filecount = cgit_enable_log_filecount;
+	ret->enable_log_linecount = cgit_enable_log_linecount;
 	ret->module_link = cgit_module_link;
 	return ret;
 }
@@ -107,6 +111,10 @@ void cgit_global_config_cb(const char *name, const char *value)
 		cgit_nocache = atoi(value);
 	else if (!strcmp(name, "snapshots"))
 		cgit_snapshots = atoi(value);
+	else if (!strcmp(name, "enable-log-filecount"))
+		cgit_enable_log_filecount = atoi(value);
+	else if (!strcmp(name, "enable-log-linecount"))
+		cgit_enable_log_linecount = atoi(value);
 	else if (!strcmp(name, "cache-root"))
 		cgit_cache_root = xstrdup(value);
 	else if (!strcmp(name, "cache-root-ttl"))
@@ -136,7 +144,11 @@ void cgit_global_config_cb(const char *name, const char *value)
 	else if (cgit_repo && !strcmp(name, "repo.defbranch"))
 		cgit_repo->defbranch = xstrdup(value);
 	else if (cgit_repo && !strcmp(name, "repo.snapshots"))
-		cgit_repo->snapshots = atoi(value);
+		cgit_repo->snapshots = cgit_snapshots * atoi(value);
+	else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
+		cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
+	else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
+		cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
 	else if (cgit_repo && !strcmp(name, "repo.module-link"))
 		cgit_repo->module_link= xstrdup(value);
 	else if (!strcmp(name, "include"))

ui-log.c

@@ -19,7 +19,8 @@ void count_lines(char *line, int size)
 void inspect_files(struct diff_filepair *pair)
 {
 	files++;
-	cgit_diff_files(pair->one->sha1, pair->two->sha1, count_lines);
+	if (cgit_repo->enable_log_linecount)
+		cgit_diff_files(pair->one->sha1, pair->two->sha1, count_lines);
 }
 
 void print_commit(struct commit *commit)
@@ -39,13 +40,17 @@ void print_commit(struct commit *commit)
 	html_link_open(url, NULL, NULL);
 	html_ntxt(cgit_max_msg_len, info->subject);
 	html_link_close();
-	files = 0;
-	lines = 0;
-	cgit_diff_commit(commit, inspect_files);
-	html("</td><td class='right'>");
-	htmlf("%d", files);
-	html("</td><td class='right'>");
-	htmlf("%d", lines);
+	if (cgit_repo->enable_log_filecount) {
+		files = 0;
+		lines = 0;
+		cgit_diff_commit(commit, inspect_files);
+		html("</td><td class='right'>");
+		htmlf("%d", files);
+		if (cgit_repo->enable_log_linecount) {
+			html("</td><td class='right'>");
+			htmlf("%d", lines);
+		}
+	}
 	html("</td><td>");
 	html_txt(info->author);
 	html("</td></tr>\n");
@@ -81,10 +86,14 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *path)
 
 	html("<table class='list nowrap'>");
 	html("<tr class='nohover'><th class='left'>Date</th>"
-	     "<th class='left'>Message</th>"
-	     "<th class='left'>Files</th>"
-	     "<th class='left'>Lines</th>"
-	     "<th class='left'>Author</th></tr>\n");
+	     "<th class='left'>Message</th>");
+
+	if (cgit_repo->enable_log_filecount) {
+		html("<th class='left'>Files</th>");
+		if (cgit_repo->enable_log_linecount)
+			html("<th class='left'>Lines</th>");
+	}
+	html("<th class='left'>Author</th></tr>\n");
 
 	if (ofs<0)
 		ofs = 0;