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
@@ -7,13 +7,16 @@
  */
 
 #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;
@@ -80,7 +83,7 @@ char *find_default_branch(struct cgit_repo *repo)
 
 static void cgit_print_repo_page(struct cacheitem *item)
 {
-        char *title, *tmp;
+        char *tmp;
         int show_search;
         unsigned char sha1[20];
         int nongit = 0;
@@ -88,17 +91,19 @@ static void cgit_print_repo_page(struct cacheitem *item)
         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) {
@@ -107,8 +112,9 @@ static void cgit_print_repo_page(struct cacheitem *item)
         }
 
         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;
@@ -117,8 +123,9 @@ static void cgit_print_repo_page(struct cacheitem *item)
         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;
@@ -143,15 +150,16 @@ static void cgit_print_repo_page(struct cacheitem *item)
         }
 
         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:
@@ -180,12 +188,18 @@ static void cgit_print_repo_page(struct cacheitem *item)
         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");
@@ -193,6 +207,8 @@ static void cgit_fill_cache(struct cacheitem *item, int use_cache)
                 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
diff --git a/cgit.h b/cgit.h
index 5b7ee1c..8ab8e07 100644
--- a/cgit.h
+++ b/cgit.h
@@ -174,10 +174,20 @@ struct cgit_config {
         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;
@@ -260,12 +270,10 @@ 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);
diff --git a/shared.c b/shared.c
index 76e10d0..539d533 100644
--- a/shared.c
+++ b/shared.c
@@ -35,6 +35,9 @@ void cgit_prepare_context(struct cgit_context *ctx)
         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)
diff --git a/ui-blob.c b/ui-blob.c
index be4fb88..bd44574 100644
--- a/ui-blob.c
+++ b/ui-blob.c
@@ -35,6 +35,8 @@ void cgit_print_blob(struct cacheitem *item, const char *hex, char *path)
         }
 
         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
@@ -92,7 +92,9 @@ void cgit_print_patch(char *hex, struct cacheitem *item)
         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: ");
diff --git a/ui-repolist.c b/ui-repolist.c
index cd4e41d..e663585 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -51,8 +51,10 @@ void cgit_print_repolist(struct cacheitem *item)
         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) {
diff --git a/ui-shared.c b/ui-shared.c
index 2eff79d..2596023 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -26,14 +26,6 @@ static char *http_date(time_t t)
                    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'>");
@@ -361,24 +353,34 @@ void cgit_print_age(time_t t, time_t max_relative, char *format)
               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");
@@ -463,7 +465,7 @@ void add_hidden_formfields(int incl_head, int incl_search, char *page)
         }
 }
 
-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;
@@ -475,40 +477,40 @@ void cgit_print_pageheader(char *title, int show_search)
         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='");
@@ -520,10 +522,10 @@ void cgit_print_pageheader(char *title, int show_search)
 
                 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");
@@ -532,22 +534,22 @@ void cgit_print_pageheader(char *title, int show_search)
 
                 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);
         }
 
@@ -556,18 +558,6 @@ void cgit_print_pageheader(char *title, int show_search)
         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))
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 67dbbdd..4449803 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -101,7 +101,9 @@ void cgit_print_snapshot(struct cacheitem *item, const char *head,
                 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;
         }