Add struct cgit_page to cgit_context

This struct is used when generating http headers, and as such is another
small step towards the goal of the whole cleanup series; to invoke each
page/view function with a function pointer.

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

8 files changed, 113 insertions, 88 deletions

diff --git a/cgit.c b/cgit.c
index e6b4526..d0f6905 100644
--- a/cgit.c
+++ b/cgit.c
@@ -4,19 +4,22 @@
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
+#include "cmd.h"
 
 static int cgit_prepare_cache(struct cacheitem *item)
 {
 	if (!ctx.repo && ctx.qry.repo) {
-		char *title = fmt("%s - %s", ctx.cfg.root_title, "Bad request");
-		cgit_print_docstart(title, item);
-		cgit_print_pageheader(title, 0);
+		ctx.page.title = fmt("%s - %s", ctx.cfg.root_title,
+				      "Bad request");
+		cgit_print_http_headers(&ctx);
+		cgit_print_docstart(&ctx);
+		cgit_print_pageheader(&ctx);
 		cgit_print_error(fmt("Unknown repo: %s", ctx.qry.repo));
 		cgit_print_docend();
 		return 0;
 	}
 
 	if (!ctx.repo) {
@@ -77,51 +80,55 @@ char *find_default_branch(struct cgit_repo *repo)
 	else
 		return info.first_ref;
 }
 
 static void cgit_print_repo_page(struct cacheitem *item)
 {
-	char *title, *tmp;
+	char *tmp;
 	int show_search;
 	unsigned char sha1[20];
 	int nongit = 0;
 
 	setenv("GIT_DIR", ctx.repo->path, 1);
 	setup_git_directory_gently(&nongit);
 	if (nongit) {
-		title = fmt("%s - %s", ctx.cfg.root_title, "config error");
+		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_docstart(title, item);
-		cgit_print_pageheader(title, 0);
+		cgit_print_http_headers(&ctx);
+		cgit_print_docstart(&ctx);
+		cgit_print_pageheader(&ctx);
 		cgit_print_error(tmp);
 		cgit_print_docend();
 		return;
 	}
 
-	title = fmt("%s - %s", ctx.repo->name, ctx.repo->desc);
+	ctx.page.title = fmt("%s - %s", ctx.repo->name, ctx.repo->desc);
 	show_search = 0;
 
 	if (!ctx.qry.head) {
 		ctx.qry.head = xstrdup(find_default_branch(ctx.repo));
 		ctx.repo->defbranch = ctx.qry.head;
 	}
 
 	if (!ctx.qry.head) {
-		cgit_print_docstart(title, item);
-		cgit_print_pageheader(title, 0);
+		cgit_print_http_headers(&ctx);
+		cgit_print_docstart(&ctx);
+		cgit_print_pageheader(&ctx);
 		cgit_print_error("Repository seems to be empty");
 		cgit_print_docend();
 		return;
 	}
 
 	if (get_sha1(ctx.qry.head, sha1)) {
 		tmp = xstrdup(ctx.qry.head);
 		ctx.qry.head = ctx.repo->defbranch;
-		cgit_print_docstart(title, item);
-		cgit_print_pageheader(title, 0);
+		cgit_print_http_headers(&ctx);
+		cgit_print_docstart(&ctx);
+		cgit_print_pageheader(&ctx);
 		cgit_print_error(fmt("Invalid branch: %s", tmp));
 		cgit_print_docend();
 		return;
 	}
 
 	if ((cgit_cmd == CMD_SNAPSHOT) && ctx.repo->snapshots) {
@@ -140,21 +147,22 @@ static void cgit_print_repo_page(struct cacheitem *item)
 	if (cgit_cmd == CMD_BLOB) {
 		cgit_print_blob(item, ctx.qry.sha1, ctx.qry.path);
 		return;
 	}
 
 	show_search = (cgit_cmd == CMD_LOG);
-	cgit_print_docstart(title, item);
+	cgit_print_http_headers(&ctx);
+	cgit_print_docstart(&ctx);
 	if (!cgit_cmd) {
-		cgit_print_pageheader("summary", show_search);
+		cgit_print_pageheader(&ctx);
 		cgit_print_summary();
 		cgit_print_docend();
 		return;
 	}
 
-	cgit_print_pageheader(ctx.qry.page, show_search);
+	cgit_print_pageheader(&ctx);
 
 	switch(cgit_cmd) {
 	case CMD_LOG:
 		cgit_print_log(ctx.qry.sha1, ctx.qry.ofs,
 			       ctx.cfg.max_commit_count, ctx.qry.grep, ctx.qry.search,
 			       ctx.qry.path, 1);
@@ -177,25 +185,33 @@ static void cgit_print_repo_page(struct cacheitem *item)
 	default:
 		cgit_print_error("Invalid request");
 	}
 	cgit_print_docend();
 }
 
+static long ttl_seconds(long ttl)
+{
+	if (ttl<0)
+		return 60 * 60 * 24 * 365;
+	else
+		return ttl * 60;
+}
+
 static void cgit_fill_cache(struct cacheitem *item, int use_cache)
 {
 	int stdout2;
 
-	item->st.st_mtime = time(NULL);
-
 	if (use_cache) {
 		stdout2 = chk_positive(dup(STDOUT_FILENO),
 				       "Preserving STDOUT");
 		chk_zero(close(STDOUT_FILENO), "Closing STDOUT");
 		chk_positive(dup2(item->fd, STDOUT_FILENO), "Dup2(cachefile)");
 	}
 
+	ctx.page.modified = time(NULL);
+	ctx.page.expires = ctx.page.modified + ttl_seconds(item->ttl);
 	if (ctx.repo)
 		cgit_print_repo_page(item);
 	else
 		cgit_print_repolist(item);
 
 	if (use_cache) {
diff --git a/cgit.h b/cgit.h
index 5b7ee1c..8ab8e07 100644
--- a/cgit.h
+++ b/cgit.h
@@ -171,16 +171,26 @@ struct cgit_config {
 	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;
 };
 
 extern const char *cgit_version;
 
 extern struct cgit_repolist cgit_repolist;
 extern struct cgit_context ctx;
@@ -257,18 +267,16 @@ extern void cgit_diff_link(char *name, char *title, char *class, char *head,
 
 extern void cgit_object_link(struct object *obj);
 
 extern void cgit_print_error(char *msg);
 extern void cgit_print_date(time_t secs, char *format);
 extern void cgit_print_age(time_t t, time_t max_relative, char *format);
-extern void cgit_print_docstart(char *title, struct cacheitem *item);
+extern void cgit_print_http_headers(struct cgit_context *ctx);
+extern void cgit_print_docstart(struct cgit_context *ctx);
 extern void cgit_print_docend();
-extern void cgit_print_pageheader(char *title, int show_search);
-extern void cgit_print_snapshot_start(const char *mimetype,
-				      const char *filename,
-				      struct cacheitem *item);
+extern void cgit_print_pageheader(struct cgit_context *ctx);
 extern void cgit_print_filemode(unsigned short mode);
 extern void cgit_print_branches(int maxcount);
 extern void cgit_print_tags(int maxcount);
 
 extern void cgit_print_repolist(struct cacheitem *item);
 extern void cgit_print_summary();
diff --git a/shared.c b/shared.c
index 76e10d0..539d533 100644
--- a/shared.c
+++ b/shared.c
@@ -32,12 +32,15 @@ void cgit_prepare_context(struct cgit_context *ctx)
 	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.script_name = CGIT_SCRIPT_NAME;
+	ctx->page.mimetype = "text/html";
+	ctx->page.charset = PAGE_ENCODING;
+	ctx->page.filename = NULL;
 }
 
 int cgit_get_cmd_index(const char *cmd)
 {
 	static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
 			       "snapshot", "tag", "refs", "patch", NULL};
diff --git a/ui-blob.c b/ui-blob.c
index be4fb88..bd44574 100644
--- a/ui-blob.c
+++ b/ui-blob.c
@@ -32,9 +32,11 @@ void cgit_print_blob(struct cacheitem *item, const char *hex, char *path)
 	if (!buf) {
 		cgit_print_error(fmt("Error reading object %s", hex));
 		return;
 	}
 
 	buf[size] = '\0';
-	cgit_print_snapshot_start("text/plain", path, item);
+	ctx.page.mimetype = "text/plain";
+	ctx.page.filename = path;
+	cgit_print_http_headers(&ctx);
 	write(htmlfd, buf, size);
 }
diff --git a/ui-patch.c b/ui-patch.c
index d93426b..a77f3f6 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -89,13 +89,15 @@ void cgit_print_patch(char *hex, struct cacheitem *item)
 		return;
 	}
 	info = cgit_parse_commit(commit);
 	hashcpy(old_sha1, commit->parents->item->object.sha1);
 
 	patchname = fmt("%s.patch", sha1_to_hex(sha1));
-	cgit_print_snapshot_start("text/plain", patchname, item);
+	ctx.page.mimetype = "text/plain";
+	ctx.page.filename = patchname;
+	cgit_print_http_headers(&ctx);
 	htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));
 	htmlf("From: %s%s\n", info->author, info->author_email);
 	html("Date: ");
 	cgit_print_date(info->author_date, "%a, %d  %b  %Y  %H:%M:%S  %z%n");
 	htmlf("Subject: %s\n\n", info->subject);
 	if (info->msg && *info->msg) {
diff --git a/ui-repolist.c b/ui-repolist.c
index cd4e41d..e663585 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -48,14 +48,16 @@ void cgit_print_repolist(struct cacheitem *item)
 	int i, columns = 4;
 	char *last_group = NULL;
 
 	if (ctx.cfg.enable_index_links)
 		columns++;
 
-	cgit_print_docstart(ctx.cfg.root_title, item);
-	cgit_print_pageheader(ctx.cfg.root_title, 0);
+	ctx.page.title = ctx.cfg.root_title;
+	cgit_print_http_headers(&ctx);
+	cgit_print_docstart(&ctx);
+	cgit_print_pageheader(&ctx);
 
 	html("<table summary='repository list' class='list nowrap'>");
 	if (ctx.cfg.index_header) {
 		htmlf("<tr class='nohover'><td colspan='%d' class='include-block'>",
 		      columns);
 		html_include(ctx.cfg.index_header);
diff --git a/ui-shared.c b/ui-shared.c
index 2eff79d..2596023 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -23,20 +23,12 @@ static char *http_date(time_t t)
 	struct tm *tm = gmtime(&t);
 	return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
 		   tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
 		   tm->tm_hour, tm->tm_min, tm->tm_sec);
 }
 
-static long ttl_seconds(long ttl)
-{
-	if (ttl<0)
-		return 60 * 60 * 24 * 365;
-	else
-		return ttl * 60;
-}
-
 void cgit_print_error(char *msg)
 {
 	html("<div class='error'>");
 	html_txt(msg);
 	html("</div>\n");
 }
@@ -358,30 +350,40 @@ void cgit_print_age(time_t t, time_t max_relative, char *format)
 		return;
 	}
 	htmlf("<span class='age-years'>%.0f years</span>",
 	      secs * 1.0 / TM_YEAR);
 }
 
-void cgit_print_docstart(char *title, struct cacheitem *item)
+void cgit_print_http_headers(struct cgit_context *ctx)
 {
-	html("Content-Type: text/html; charset=" PAGE_ENCODING "\n");
-	htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
-	htmlf("Expires: %s\n", http_date(item->st.st_mtime +
-					 ttl_seconds(item->ttl)));
+	if (ctx->page.mimetype && ctx->page.charset)
+		htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
+		      ctx->page.charset);
+	else if (ctx->page.mimetype)
+		htmlf("Content-Type: %s\n", ctx->page.mimetype);
+	if (ctx->page.filename)
+		htmlf("Content-Disposition: inline; filename=\"%s\"\n",
+		      ctx->page.filename);
+	htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
+	htmlf("Expires: %s\n", http_date(ctx->page.expires));
 	html("\n");
+}
+
+void cgit_print_docstart(struct cgit_context *ctx)
+{
 	html(cgit_doctype);
 	html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 	html("<head>\n");
 	html("<title>");
-	html_txt(title);
+	html_txt(ctx->page.title);
 	html("</title>\n");
 	htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
-	if (ctx.cfg.robots && *ctx.cfg.robots)
-		htmlf("<meta name='robots' content='%s'/>\n", ctx.cfg.robots);
+	if (ctx->cfg.robots && *ctx->cfg.robots)
+		htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
 	html("<link rel='stylesheet' type='text/css' href='");
-	html_attr(ctx.cfg.css);
+	html_attr(ctx->cfg.css);
 	html("'/>\n");
 	html("</head>\n");
 	html("<body>\n");
 }
 
 void cgit_print_docend()
@@ -460,117 +462,105 @@ void add_hidden_formfields(int incl_head, int incl_search, char *page)
 			html_hidden("qt", ctx.qry.grep);
 		if (ctx.qry.search)
 			html_hidden("q", ctx.qry.search);
 	}
 }
 
-void cgit_print_pageheader(char *title, int show_search)
+void cgit_print_pageheader(struct cgit_context *ctx)
 {
 	static const char *default_info = "This is cgit, a fast webinterface for git repositories";
 	int header = 0;
 	char *url;
 
 	html("<table id='layout' summary=''>\n");
 	html("<tr><td id='sidebar'>\n");
 	html("<table class='sidebar' cellspacing='0' summary=''>\n");
 	html("<tr><td class='sidebar'>\n<a href='");
 	html_attr(cgit_rooturl());
 	htmlf("'><img src='%s' alt='cgit'/></a>\n",
-	      ctx.cfg.logo);
+	      ctx->cfg.logo);
 	html("</td></tr>\n<tr><td class='sidebar'>\n");
-	if (ctx.repo) {
+	if (ctx->repo) {
 		html("<h1 class='first'>");
-		html_txt(strrpart(ctx.repo->name, 20));
+		html_txt(strrpart(ctx->repo->name, 20));
 		html("</h1>\n");
-		html_txt(ctx.repo->desc);
-		if (ctx.repo->owner) {
+		html_txt(ctx->repo->desc);
+		if (ctx->repo->owner) {
 			html("<h1>owner</h1>\n");
-			html_txt(ctx.repo->owner);
+			html_txt(ctx->repo->owner);
 		}
 		html("<h1>navigate</h1>\n");
-		reporevlink(NULL, "summary", NULL, "menu", ctx.qry.head,
+		reporevlink(NULL, "summary", NULL, "menu", ctx->qry.head,
 			    NULL, NULL);
-		cgit_log_link("log", NULL, "menu", ctx.qry.head, NULL, NULL,
+		cgit_log_link("log", NULL, "menu", ctx->qry.head, NULL, NULL,
 			      0, NULL, NULL);
-		cgit_tree_link("tree", NULL, "menu", ctx.qry.head,
-			       ctx.qry.sha1, NULL);
-		cgit_commit_link("commit", NULL, "menu", ctx.qry.head,
-			      ctx.qry.sha1);
-		cgit_diff_link("diff", NULL, "menu", ctx.qry.head,
-			       ctx.qry.sha1, ctx.qry.sha2, NULL);
-		cgit_patch_link("patch", NULL, "menu", ctx.qry.head,
-				ctx.qry.sha1);
+		cgit_tree_link("tree", NULL, "menu", ctx->qry.head,
+			       ctx->qry.sha1, NULL);
+		cgit_commit_link("commit", NULL, "menu", ctx->qry.head,
+			      ctx->qry.sha1);
+		cgit_diff_link("diff", NULL, "menu", ctx->qry.head,
+			       ctx->qry.sha1, ctx->qry.sha2, NULL);
+		cgit_patch_link("patch", NULL, "menu", ctx->qry.head,
+				ctx->qry.sha1);
 
 		for_each_ref(print_archive_ref, &header);
 
-		if (ctx.repo->clone_url || ctx.cfg.clone_prefix) {
+		if (ctx->repo->clone_url || ctx->cfg.clone_prefix) {
 			html("<h1>clone</h1>\n");
-			if (ctx.repo->clone_url)
-				url = ctx.repo->clone_url;
+			if (ctx->repo->clone_url)
+				url = ctx->repo->clone_url;
 			else
-				url = fmt("%s%s", ctx.cfg.clone_prefix,
-					  ctx.repo->url);
+				url = fmt("%s%s", ctx->cfg.clone_prefix,
+					  ctx->repo->url);
 			html("<a class='menu' href='");
 			html_attr(url);
 			html("' title='");
 			html_attr(url);
 			html("'>\n");
 			html_txt(strrpart(url, 20));
 			html("</a>\n");
 		}
 
 		html("<h1>branch</h1>\n");
 		html("<form method='get' action=''>\n");
-		add_hidden_formfields(0, 1, ctx.qry.page);
+		add_hidden_formfields(0, 1, ctx->qry.page);
 //		html("<table summary='branch selector' class='grid'><tr><td id='branch-dropdown-cell'>");
 		html("<select name='h' onchange='this.form.submit();'>\n");
-		for_each_branch_ref(print_branch_option, ctx.qry.head);
+		for_each_branch_ref(print_branch_option, ctx->qry.head);
 		html("</select>\n");
 //		html("</td><td>");
 		html("<noscript><input type='submit' id='switch-btn' value='switch'/></noscript>\n");
 //		html("</td></tr></table>");
 		html("</form>\n");
 
 		html("<h1>search</h1>\n");
 		html("<form method='get' action='");
-		if (ctx.cfg.virtual_root)
-			html_attr(cgit_fileurl(ctx.qry.repo, "log",
-					       ctx.qry.path, NULL));
+		if (ctx->cfg.virtual_root)
+			html_attr(cgit_fileurl(ctx->qry.repo, "log",
+					       ctx->qry.path, NULL));
 		html("'>\n");
 		add_hidden_formfields(1, 0, "log");
 		html("<select name='qt'>\n");
-		html_option("grep", "log msg", ctx.qry.grep);
-		html_option("author", "author", ctx.qry.grep);
-		html_option("committer", "committer", ctx.qry.grep);
+		html_option("grep", "log msg", ctx->qry.grep);
+		html_option("author", "author", ctx->qry.grep);
+		html_option("committer", "committer", ctx->qry.grep);
 		html("</select>\n");
 		html("<input class='txt' type='text' name='q' value='");
-		html_attr(ctx.qry.search);
+		html_attr(ctx->qry.search);
 		html("'/>\n");
 		html("</form>\n");
 	} else {
-		if (!ctx.cfg.index_info || html_include(ctx.cfg.index_info))
+		if (!ctx->cfg.index_info || html_include(ctx->cfg.index_info))
 			html(default_info);
 	}
 
 	html("</td></tr></table></td>\n");
 
 	html("<td id='content'>\n");
 }
 
-
-void cgit_print_snapshot_start(const char *mimetype, const char *filename,
-			       struct cacheitem *item)
-{
-	htmlf("Content-Type: %s\n", mimetype);
-	htmlf("Content-Disposition: inline; filename=\"%s\"\n", filename);
-	htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
-	htmlf("Expires: %s\n", http_date(item->st.st_mtime +
-					 ttl_seconds(item->ttl)));
-	html("\n");
-}
-
 void cgit_print_filemode(unsigned short mode)
 {
 	if (S_ISDIR(mode))
 		html("d");
 	else if (S_ISLNK(mode))
 		html("l");
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 67dbbdd..4449803 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -98,13 +98,15 @@ void cgit_print_snapshot(struct cacheitem *item, const char *head,
 			return;;
 		}
 		memset(&args,0,sizeof(args));
 		args.base = fmt("%s/", prefix);
 		args.tree = commit->tree;
 		args.time = commit->date;
-		cgit_print_snapshot_start(sat->mimetype, filename, item);
+		ctx.page.mimetype = xstrdup(sat->mimetype);
+		ctx.page.filename = xstrdup(filename);
+		cgit_print_http_headers(&ctx);
 		(*sat->write_func)(&args);
 		return;
 	}
 	cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
 }