Add a pager on the repolist

This enables a pager on the repolist which restricts the number of entries
displayed per page, controlled by the new option `max-repo-count` (default
value 50).

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

4 files changed, 32 insertions, 1 deletions

diff --git a/cgit.c b/cgit.c
index ccd61f4..2036ceb 100644
--- a/cgit.c
+++ b/cgit.c
@@ -4,222 +4,225 @@
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "cache.h"
 #include "cmd.h"
 #include "configfile.h"
 #include "html.h"
 #include "ui-shared.h"
 
 const char *cgit_version = CGIT_VERSION;
 
 void config_cb(const char *name, const char *value)
 {
 	if (!strcmp(name, "root-title"))
 		ctx.cfg.root_title = xstrdup(value);
 	else if (!strcmp(name, "root-desc"))
 		ctx.cfg.root_desc = xstrdup(value);
 	else if (!strcmp(name, "root-readme"))
 		ctx.cfg.root_readme = xstrdup(value);
 	else if (!strcmp(name, "css"))
 		ctx.cfg.css = xstrdup(value);
 	else if (!strcmp(name, "logo"))
 		ctx.cfg.logo = xstrdup(value);
 	else if (!strcmp(name, "index-header"))
 		ctx.cfg.index_header = xstrdup(value);
 	else if (!strcmp(name, "index-info"))
 		ctx.cfg.index_info = xstrdup(value);
 	else if (!strcmp(name, "logo-link"))
 		ctx.cfg.logo_link = xstrdup(value);
 	else if (!strcmp(name, "module-link"))
 		ctx.cfg.module_link = xstrdup(value);
 	else if (!strcmp(name, "virtual-root")) {
 		ctx.cfg.virtual_root = trim_end(value, '/');
 		if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
 			ctx.cfg.virtual_root = "";
 	} else if (!strcmp(name, "nocache"))
 		ctx.cfg.nocache = atoi(value);
 	else if (!strcmp(name, "snapshots"))
 		ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
 	else if (!strcmp(name, "enable-index-links"))
 		ctx.cfg.enable_index_links = atoi(value);
 	else if (!strcmp(name, "enable-log-filecount"))
 		ctx.cfg.enable_log_filecount = atoi(value);
 	else if (!strcmp(name, "enable-log-linecount"))
 		ctx.cfg.enable_log_linecount = atoi(value);
 	else if (!strcmp(name, "cache-size"))
 		ctx.cfg.cache_size = atoi(value);
 	else if (!strcmp(name, "cache-root"))
 		ctx.cfg.cache_root = xstrdup(value);
 	else if (!strcmp(name, "cache-root-ttl"))
 		ctx.cfg.cache_root_ttl = atoi(value);
 	else if (!strcmp(name, "cache-repo-ttl"))
 		ctx.cfg.cache_repo_ttl = atoi(value);
 	else if (!strcmp(name, "cache-static-ttl"))
 		ctx.cfg.cache_static_ttl = atoi(value);
 	else if (!strcmp(name, "cache-dynamic-ttl"))
 		ctx.cfg.cache_dynamic_ttl = atoi(value);
 	else if (!strcmp(name, "max-message-length"))
 		ctx.cfg.max_msg_len = atoi(value);
 	else if (!strcmp(name, "max-repodesc-length"))
 		ctx.cfg.max_repodesc_len = atoi(value);
+	else if (!strcmp(name, "max-repo-count"))
+		ctx.cfg.max_repo_count = atoi(value);
 	else if (!strcmp(name, "max-commit-count"))
 		ctx.cfg.max_commit_count = atoi(value);
 	else if (!strcmp(name, "summary-log"))
 		ctx.cfg.summary_log = atoi(value);
 	else if (!strcmp(name, "summary-branches"))
 		ctx.cfg.summary_branches = atoi(value);
 	else if (!strcmp(name, "summary-tags"))
 		ctx.cfg.summary_tags = atoi(value);
 	else if (!strcmp(name, "agefile"))
 		ctx.cfg.agefile = xstrdup(value);
 	else if (!strcmp(name, "renamelimit"))
 		ctx.cfg.renamelimit = atoi(value);
 	else if (!strcmp(name, "robots"))
 		ctx.cfg.robots = xstrdup(value);
 	else if (!strcmp(name, "clone-prefix"))
 		ctx.cfg.clone_prefix = xstrdup(value);
 	else if (!strcmp(name, "repo.group"))
 		ctx.cfg.repo_group = xstrdup(value);
 	else if (!strcmp(name, "repo.url"))
 		ctx.repo = cgit_add_repo(value);
 	else if (!strcmp(name, "repo.name"))
 		ctx.repo->name = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.path"))
 		ctx.repo->path = trim_end(value, '/');
 	else if (ctx.repo && !strcmp(name, "repo.clone-url"))
 		ctx.repo->clone_url = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.desc"))
 		ctx.repo->desc = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.owner"))
 		ctx.repo->owner = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.defbranch"))
 		ctx.repo->defbranch = xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.snapshots"))
 		ctx.repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
 	else if (ctx.repo && !strcmp(name, "repo.enable-log-filecount"))
 		ctx.repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
 	else if (ctx.repo && !strcmp(name, "repo.enable-log-linecount"))
 		ctx.repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
 	else if (ctx.repo && !strcmp(name, "repo.module-link"))
 		ctx.repo->module_link= xstrdup(value);
 	else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
 		if (*value == '/')
 			ctx.repo->readme = xstrdup(value);
 		else
 			ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));
 	} else if (!strcmp(name, "include"))
 		parse_configfile(value, config_cb);
 }
 
 static void querystring_cb(const char *name, const char *value)
 {
 	if (!strcmp(name,"r")) {
 		ctx.qry.repo = xstrdup(value);
 		ctx.repo = cgit_get_repoinfo(value);
 	} else if (!strcmp(name, "p")) {
 		ctx.qry.page = xstrdup(value);
 	} else if (!strcmp(name, "url")) {
 		cgit_parse_url(value);
 	} else if (!strcmp(name, "qt")) {
 		ctx.qry.grep = xstrdup(value);
 	} else if (!strcmp(name, "q")) {
 		ctx.qry.search = xstrdup(value);
 	} else if (!strcmp(name, "h")) {
 		ctx.qry.head = xstrdup(value);
 		ctx.qry.has_symref = 1;
 	} else if (!strcmp(name, "id")) {
 		ctx.qry.sha1 = xstrdup(value);
 		ctx.qry.has_sha1 = 1;
 	} else if (!strcmp(name, "id2")) {
 		ctx.qry.sha2 = xstrdup(value);
 		ctx.qry.has_sha1 = 1;
 	} else if (!strcmp(name, "ofs")) {
 		ctx.qry.ofs = atoi(value);
 	} else if (!strcmp(name, "path")) {
 		ctx.qry.path = trim_end(value, '/');
 	} else if (!strcmp(name, "name")) {
 		ctx.qry.name = xstrdup(value);
 	}
 }
 
 static void prepare_context(struct cgit_context *ctx)
 {
 	memset(ctx, 0, sizeof(ctx));
 	ctx->cfg.agefile = "info/web/last-modified";
 	ctx->cfg.nocache = 0;
 	ctx->cfg.cache_size = 0;
 	ctx->cfg.cache_dynamic_ttl = 5;
 	ctx->cfg.cache_max_create_time = 5;
 	ctx->cfg.cache_repo_ttl = 5;
 	ctx->cfg.cache_root = CGIT_CACHE_ROOT;
 	ctx->cfg.cache_root_ttl = 5;
 	ctx->cfg.cache_static_ttl = -1;
 	ctx->cfg.css = "/cgit.css";
 	ctx->cfg.logo = "/git-logo.png";
+	ctx->cfg.max_repo_count = 50;
 	ctx->cfg.max_commit_count = 50;
 	ctx->cfg.max_lock_attempts = 5;
 	ctx->cfg.max_msg_len = 60;
 	ctx->cfg.max_repodesc_len = 60;
 	ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
 	ctx->cfg.renamelimit = -1;
 	ctx->cfg.robots = "index, nofollow";
 	ctx->cfg.root_title = "Git repository browser";
 	ctx->cfg.root_desc = "a fast webinterface for the git dscm";
 	ctx->cfg.script_name = CGIT_SCRIPT_NAME;
 	ctx->page.mimetype = "text/html";
 	ctx->page.charset = PAGE_ENCODING;
 	ctx->page.filename = NULL;
 	ctx->page.modified = time(NULL);
 	ctx->page.expires = ctx->page.modified;
 }
 
 struct refmatch {
 	char *req_ref;
 	char *first_ref;
 	int match;
 };
 
 int find_current_ref(const char *refname, const unsigned char *sha1,
 		     int flags, void *cb_data)
 {
 	struct refmatch *info;
 
 	info = (struct refmatch *)cb_data;
 	if (!strcmp(refname, info->req_ref))
 		info->match = 1;
 	if (!info->first_ref)
 		info->first_ref = xstrdup(refname);
 	return info->match;
 }
 
 char *find_default_branch(struct cgit_repo *repo)
 {
 	struct refmatch info;
 
 	info.req_ref = repo->defbranch;
 	info.first_ref = NULL;
 	info.match = 0;
 	for_each_branch_ref(find_current_ref, &info);
 	if (info.match)
 		return info.req_ref;
 	else
 		return info.first_ref;
 }
 
 static int prepare_repo_cmd(struct cgit_context *ctx)
 {
 	char *tmp;
 	unsigned char sha1[20];
 	int nongit = 0;
 
 	setenv("GIT_DIR", ctx->repo->path, 1);
 	setup_git_directory_gently(&nongit);
 	if (nongit) {
 		ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
 				      "config error");
 		tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
 		ctx->repo = NULL;
 		cgit_print_http_headers(ctx);
diff --git a/cgit.css b/cgit.css
index 30cb8e6..d57722c 100644
--- a/cgit.css
+++ b/cgit.css
@@ -352,88 +352,98 @@ table.diff {
 }
 
 table.diff td {
 	font-family: monospace;
 	white-space: pre;
 }
 
 table.diff td div.head {
 	font-weight: bold;
 	margin-top: 1em;
 	color: black;
 }
 
 table.diff td div.hunk {
 	color: #009;
 }
 
 table.diff td div.add {
 	color: green;
 }
 
 table.diff td div.del {
 	color: red;
 }
 
 .sha1 {
 	font-family: monospace;
 	font-size: 90%;
 }
 
 .left {
 	text-align: left;
 }
 
 .right {
 	text-align: right;
 }
 
 table.list td.repogroup {
 	font-style: italic;
 	color: #888;
 }
 
 a.button {
 	font-size: 80%;
 	padding: 0em 0.5em;
 }
 
 a.primary {
 	font-size: 100%;
 }
 
 a.secondary {
 	font-size: 90%;
 }
 
 td.toplevel-repo {
 
 }
 
 table.list td.sublevel-repo {
 	padding-left: 1.5em;
 }
 
+div.pager {
+	text-align: center;
+	margin: 1em 0em 0em 0em;
+}
+
+div.pager a {
+	color: #777;
+	margin: 0em 0.5em;
+}
+
 span.age-mins {
 	font-weight: bold;
 	color: #080;
 }
 
 span.age-hours {
 	color: #080;
 }
 
 span.age-days {
 	color: #040;
 }
 
 span.age-weeks {
 	color: #444;
 }
 
 span.age-months {
 	color: #888;
 }
 
 span.age-years {
 	color: #bbb;
 }
diff --git a/cgit.h b/cgit.h
index bbb404e..4fa5cf2 100644
--- a/cgit.h
+++ b/cgit.h
@@ -84,128 +84,129 @@ struct commitinfo {
 struct taginfo {
 	char *tagger;
 	char *tagger_email;
 	int tagger_date;
 	char *msg;
 };
 
 struct refinfo {
 	const char *refname;
 	struct object *object;
 	union {
 		struct taginfo *tag;
 		struct commitinfo *commit;
 	};
 };
 
 struct reflist {
 	struct refinfo **refs;
 	int alloc;
 	int count;
 };
 
 struct cgit_query {
 	int has_symref;
 	int has_sha1;
 	char *raw;
 	char *repo;
 	char *page;
 	char *search;
 	char *grep;
 	char *head;
 	char *sha1;
 	char *sha2;
 	char *path;
 	char *name;
 	int   ofs;
 };
 
 struct cgit_config {
 	char *agefile;
 	char *cache_root;
 	char *clone_prefix;
 	char *css;
 	char *index_header;
 	char *index_info;
 	char *logo;
 	char *logo_link;
 	char *module_link;
 	char *repo_group;
 	char *robots;
 	char *root_title;
 	char *root_desc;
 	char *root_readme;
 	char *script_name;
 	char *virtual_root;
 	int cache_size;
 	int cache_dynamic_ttl;
 	int cache_max_create_time;
 	int cache_repo_ttl;
 	int cache_root_ttl;
 	int cache_static_ttl;
 	int enable_index_links;
 	int enable_log_filecount;
 	int enable_log_linecount;
+	int max_repo_count;
 	int max_commit_count;
 	int max_lock_attempts;
 	int max_msg_len;
 	int max_repodesc_len;
 	int nocache;
 	int renamelimit;
 	int snapshots;
 	int summary_branches;
 	int summary_log;
 	int summary_tags;
 };
 
 struct cgit_page {
 	time_t modified;
 	time_t expires;
 	char *mimetype;
 	char *charset;
 	char *filename;
 	char *title;
 };
 
 struct cgit_context {
 	struct cgit_query qry;
 	struct cgit_config cfg;
 	struct cgit_repo *repo;
 	struct cgit_page page;
 };
 
 struct cgit_snapshot_format {
 	const char *suffix;
 	const char *mimetype;
 	write_archive_fn_t write_func;
 	int bit;
 };
 
 extern const char *cgit_version;
 
 extern struct cgit_repolist cgit_repolist;
 extern struct cgit_context ctx;
 extern const struct cgit_snapshot_format cgit_snapshot_formats[];
 
 extern struct cgit_repo *cgit_add_repo(const char *url);
 extern struct cgit_repo *cgit_get_repoinfo(const char *url);
 extern void cgit_repo_config_cb(const char *name, const char *value);
 
 extern int chk_zero(int result, char *msg);
 extern int chk_positive(int result, char *msg);
 extern int chk_non_negative(int result, char *msg);
 
 extern char *trim_end(const char *str, char c);
 extern char *strlpart(char *txt, int maxlen);
 extern char *strrpart(char *txt, int maxlen);
 
 extern void cgit_add_ref(struct reflist *list, struct refinfo *ref);
 extern int cgit_refs_cb(const char *refname, const unsigned char *sha1,
 			int flags, void *cb_data);
 
 extern void *cgit_free_commitinfo(struct commitinfo *info);
 
 extern int cgit_diff_files(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,
 			   linediff_fn fn);
 
 extern void cgit_diff_tree(const unsigned char *old_sha1,
diff --git a/ui-repolist.c b/ui-repolist.c
index 3f78e28..ee4facb 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -10,135 +10,152 @@
 
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
 
 time_t read_agefile(char *path)
 {
 	FILE *f;
 	static char buf[64], buf2[64];
 
 	if (!(f = fopen(path, "r")))
 		return -1;
 	fgets(buf, sizeof(buf), f);
 	fclose(f);
 	if (parse_date(buf, buf2, sizeof(buf2)))
 		return strtoul(buf2, NULL, 10);
 	else
 		return 0;
 }
 
 static void print_modtime(struct cgit_repo *repo)
 {
 	char *path;
 	struct stat s;
 
 	path = fmt("%s/%s", repo->path, ctx.cfg.agefile);
 	if (stat(path, &s) == 0) {
 		cgit_print_age(read_agefile(path), -1, NULL);
 		return;
 	}
 
 	path = fmt("%s/refs/heads/%s", repo->path, repo->defbranch);
 	if (stat(path, &s) != 0)
 		return;
 	cgit_print_age(s.st_mtime, -1, NULL);
 }
 
 int is_match(struct cgit_repo *repo)
 {
 	if (!ctx.qry.search)
 		return 1;
 	if (repo->url && strcasestr(repo->url, ctx.qry.search))
 		return 1;
 	if (repo->name && strcasestr(repo->name, ctx.qry.search))
 		return 1;
 	if (repo->desc && strcasestr(repo->desc, ctx.qry.search))
 		return 1;
 	if (repo->owner && strcasestr(repo->owner, ctx.qry.search))
 		return 1;
 	return 0;
 }
 
 void print_header(int columns)
 {
 	html("<tr class='nohover'>"
 	     "<th class='left'>Name</th>"
 	     "<th class='left'>Description</th>"
 	     "<th class='left'>Owner</th>"
 	     "<th class='left'>Idle</th>");
 	if (ctx.cfg.enable_index_links)
 		html("<th class='left'>Links</th>");
 	html("</tr>\n");
 }
 
+
+void print_pager(int items, int pagelen, char *search)
+{
+	int i;
+	html("<div class='pager'>");
+	for(i = 0; i * pagelen < items; i++)
+		cgit_index_link(fmt("[%d]", i+1), fmt("Page %d", i+1), NULL,
+				search, i * pagelen);
+	html("</div>");
+}
+
 void cgit_print_repolist()
 {
 	int i, columns = 4, hits = 0, header = 0;
 	char *last_group = NULL;
 
 	if (ctx.cfg.enable_index_links)
 		columns++;
 
 	ctx.page.title = ctx.cfg.root_title;
 	cgit_print_http_headers(&ctx);
 	cgit_print_docstart(&ctx);
 	cgit_print_pageheader(&ctx);
 
 	if (ctx.cfg.index_header)
 		html_include(ctx.cfg.index_header);
 
 	html("<table summary='repository list' class='list nowrap'>");
 	for (i=0; i<cgit_repolist.count; i++) {
 		ctx.repo = &cgit_repolist.repos[i];
 		if (!is_match(ctx.repo))
 			continue;
+		hits++;
+		if (hits <= ctx.qry.ofs)
+			continue;
+		if (hits > ctx.qry.ofs + ctx.cfg.max_repo_count)
+			continue;
 		if (!header++)
 			print_header(columns);
-		hits++;
 		if ((last_group == NULL && ctx.repo->group != NULL) ||
 		    (last_group != NULL && ctx.repo->group == NULL) ||
 		    (last_group != NULL && ctx.repo->group != NULL &&
 		     strcmp(ctx.repo->group, last_group))) {
 			htmlf("<tr class='nohover'><td colspan='%d' class='repogroup'>",
 			      columns);
 			html_txt(ctx.repo->group);
 			html("</td></tr>");
 			last_group = ctx.repo->group;
 		}
 		htmlf("<tr><td class='%s'>",
 		      ctx.repo->group ? "sublevel-repo" : "toplevel-repo");
 		html_link_open(cgit_repourl(ctx.repo->url), NULL, NULL);
 		html_txt(ctx.repo->name);
 		html_link_close();
 		html("</td><td>");
 		html_link_open(cgit_repourl(ctx.repo->url), NULL, NULL);
 		html_ntxt(ctx.cfg.max_repodesc_len, ctx.repo->desc);
 		html_link_close();
 		html("</td><td>");
 		html_txt(ctx.repo->owner);
 		html("</td><td>");
 		print_modtime(ctx.repo);
 		html("</td>");
 		if (ctx.cfg.enable_index_links) {
 			html("<td>");
 			html_link_open(cgit_repourl(ctx.repo->url),
 				       NULL, "button");
 			html("summary</a>");
 			cgit_log_link("log", NULL, "button", NULL, NULL, NULL,
 				      0, NULL, NULL);
 			cgit_tree_link("tree", NULL, "button", NULL, NULL, NULL);
 			html("</td>");
 		}
 		html("</tr>\n");
 	}
 	html("</table>");
 	if (!hits)
 		cgit_print_error("No repositories found");
+	else if (hits > ctx.cfg.max_repo_count)
+		print_pager(hits, ctx.cfg.max_repo_count, ctx.qry.search);
 	cgit_print_docend();
 }
 
 void cgit_print_site_readme()
 {
 	if (ctx.cfg.root_readme)
 		html_include(ctx.cfg.root_readme);
 }