7 files changed, 95 insertions, 12 deletions

diff --git a/cgit.c b/cgit.c
index 9305d0a..6ccf4aa 100644
--- a/cgit.c
+++ b/cgit.c
@@ -62,6 +62,8 @@ void repo_config(struct cgit_repo *repo, const char *name, const char *value)
                 repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
         else if (!strcmp(name, "enable-remote-branches"))
                 repo->enable_remote_branches = atoi(value);
+        else if (!strcmp(name, "enable-subject-links"))
+                repo->enable_subject_links = atoi(value);
         else if (!strcmp(name, "max-stats"))
                 repo->max_stats = cgit_find_stats_period(value, NULL);
         else if (!strcmp(name, "module-link"))
@@ -141,6 +143,8 @@ void config_cb(const char *name, const char *value)
                 ctx.cfg.enable_log_linecount = atoi(value);
         else if (!strcmp(name, "enable-remote-branches"))
                 ctx.cfg.enable_remote_branches = atoi(value);
+        else if (!strcmp(name, "enable-subject-links"))
+                ctx.cfg.enable_subject_links = atoi(value);
         else if (!strcmp(name, "enable-tree-linenumbers"))
                 ctx.cfg.enable_tree_linenumbers = atoi(value);
         else if (!strcmp(name, "max-stats"))
diff --git a/cgit.h b/cgit.h
index cd4af72..9b1e3f8 100644
--- a/cgit.h
+++ b/cgit.h
@@ -73,6 +73,7 @@ struct cgit_repo {
         int enable_log_filecount;
         int enable_log_linecount;
         int enable_remote_branches;
+        int enable_subject_links;
         int max_stats;
         time_t mtime;
         struct cgit_filter *about_filter;
@@ -181,6 +182,7 @@ struct cgit_config {
         int enable_log_filecount;
         int enable_log_linecount;
         int enable_remote_branches;
+        int enable_subject_links;
         int enable_tree_linenumbers;
         int local_time;
         int max_repo_count;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index d74d9e7..fcd4308 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -115,6 +115,12 @@ enable-remote-branches::
         in the summary and refs views. Default value: "0". See also:
         "repo.enable-remote-branches".
 
+enable-subject-links::
+        Flag which, when set to "1", will make cgit use the subject of the
+        parent commit as link text when generating links to parent commits
+        in commit view. Default value: "0". See also:
+        "repo.enable-subject-links".
+
 enable-tree-linenumbers::
         Flag which, when set to "1", will make cgit generate linenumber links
         for plaintext blobs printed in the tree view. Default value: "1".
@@ -321,6 +327,10 @@ repo.enable-remote-branches::
         Flag which, when set to "1", will make cgit display remote branches
         in the summary and refs views. Default value: <enable-remote-branches>.
 
+repo.enable-subject-links::
+        A flag which can be used to override the global setting
+        `enable-subject-links'. Default value: none.
+
 repo.max-stats::
         Override the default maximum statistics period. Valid values are equal
         to the values specified for the global "max-stats" setting. Default
diff --git a/shared.c b/shared.c
index 5f46793..8b3a045 100644
--- a/shared.c
+++ b/shared.c
@@ -60,6 +60,7 @@ struct cgit_repo *cgit_add_repo(const char *url)
         ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
         ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
         ret->enable_remote_branches = ctx.cfg.enable_remote_branches;
+        ret->enable_subject_links = ctx.cfg.enable_subject_links;
         ret->max_stats = ctx.cfg.max_stats;
         ret->module_link = ctx.cfg.module_link;
         ret->readme = NULL;
@@ -279,6 +280,10 @@ int cgit_diff_files(const unsigned char *old_sha1,
         if ((file1.ptr && buffer_is_binary(file1.ptr, file1.size)) ||
             (file2.ptr && buffer_is_binary(file2.ptr, file2.size))) {
                 *binary = 1;
+                if (file1.size)
+                        free(file1.ptr);
+                if (file2.size)
+                        free(file2.ptr);
                 return 0;
         }
 
@@ -291,6 +296,10 @@ int cgit_diff_files(const unsigned char *old_sha1,
         emit_cb.outf = filediff_cb;
         emit_cb.priv = fn;
         xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
+        if (file1.size)
+                free(file1.ptr);
+        if (file2.size)
+                free(file2.ptr);
         return 0;
 }
 
diff --git a/ui-commit.c b/ui-commit.c
index b5e3c01..41313b9 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -15,10 +15,10 @@
 void cgit_print_commit(char *hex)
 {
         struct commit *commit, *parent;
-        struct commitinfo *info;
+        struct commitinfo *info, *parent_info;
         struct commit_list *p;
         unsigned char sha1[20];
-        char *tmp;
+        char *tmp, *tmp2;
         int parents = 0;
 
         if (!hex)
@@ -82,8 +82,12 @@ void cgit_print_commit(char *hex)
                 }
                 html("<tr><th>parent</th>"
                      "<td colspan='2' class='sha1'>");
-                cgit_commit_link(sha1_to_hex(p->item->object.sha1), NULL, NULL,
-                                 ctx.qry.head, sha1_to_hex(p->item->object.sha1), 0);
+                tmp = tmp2 = sha1_to_hex(p->item->object.sha1);
+                if (ctx.repo->enable_subject_links) {
+                        parent_info = cgit_parse_commit(parent);
+                        tmp2 = parent_info->subject;
+                }
+                cgit_commit_link(tmp2, NULL, NULL, ctx.qry.head, tmp, 0);
                 html(" (");
                 cgit_diff_link("diff", NULL, NULL, ctx.qry.head, hex,
                                sha1_to_hex(p->item->object.sha1), NULL, 0);
diff --git a/ui-plain.c b/ui-plain.c
index 66cb19c..da76406 100644
--- a/ui-plain.c
+++ b/ui-plain.c
@@ -10,8 +10,7 @@
 #include "html.h"
 #include "ui-shared.h"
 
-char *curr_rev;
-char *match_path;
+int match_baselen;
 int match;
 
 static void print_object(const unsigned char *sha1, const char *path)
@@ -53,17 +52,63 @@ static void print_object(const unsigned char *sha1, const char *path)
         match = 1;
 }
 
+static void print_dir(const unsigned char *sha1, const char *path,
+                      const char *base)
+{
+        char *fullpath;
+        if (path[0] || base[0])
+                fullpath = fmt("/%s%s/", base, path);
+        else
+                fullpath = "/";
+        ctx.page.etag = sha1_to_hex(sha1);
+        cgit_print_http_headers(&ctx);
+        htmlf("<html><head><title>%s</title></head>\n<body>\n"
+              " <h2>%s</h2>\n <ul>\n", fullpath, fullpath);
+        if (path[0] || base[0])
+              html("  <li><a href=\"../\">../</a></li>\n");
+        match = 2;
+}
+
+static void print_dir_entry(const unsigned char *sha1, const char *path,
+                            unsigned mode)
+{
+        const char *sep = "";
+        if (S_ISDIR(mode))
+                sep = "/";
+        htmlf("  <li><a href=\"%s%s\">%s%s</a></li>\n", path, sep, path, sep);
+        match = 2;
+}
+
+static void print_dir_tail(void)
+{
+        html(" </ul>\n</body></html>\n");
+}
+
 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
                      const char *pathname, unsigned mode, int stage,
                      void *cbdata)
 {
-        if (S_ISDIR(mode))
+        if (baselen == match_baselen) {
+                if (S_ISREG(mode))
+                        print_object(sha1, pathname);
+                else if (S_ISDIR(mode)) {
+                        print_dir(sha1, pathname, base);
+                        return READ_TREE_RECURSIVE;
+                }
+        }
+        else if (baselen > match_baselen)
+                print_dir_entry(sha1, pathname, mode);
+        else if (S_ISDIR(mode))
                 return READ_TREE_RECURSIVE;
 
-        if (S_ISREG(mode) && !strncmp(base, match_path, baselen) &&
-            !strcmp(pathname, match_path + baselen))
-                print_object(sha1, pathname);
+        return 0;
+}
 
+static int basedir_len(const char *path)
+{
+        char *p = strrchr(path, '/');
+        if (p)
+                return p - path + 1;
         return 0;
 }
 
@@ -77,7 +122,6 @@ void cgit_print_plain(struct cgit_context *ctx)
         if (!rev)
                 rev = ctx->qry.head;
 
-        curr_rev = xstrdup(rev);
         if (get_sha1(rev, sha1)) {
                 html_status(404, "Not found", 0);
                 return;
@@ -87,8 +131,16 @@ void cgit_print_plain(struct cgit_context *ctx)
                 html_status(404, "Not found", 0);
                 return;
         }
-        match_path = ctx->qry.path;
+        if (!paths[0]) {
+                paths[0] = "";
+                match_baselen = -1;
+                print_dir(commit->tree->object.sha1, "", "");
+        }
+        else
+                match_baselen = basedir_len(paths[0]);
         read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
         if (!match)
                 html_status(404, "Not found", 0);
+        else if (match == 2)
+                print_dir_tail();
 }
diff --git a/ui-tree.c b/ui-tree.c
index 94aff8f..0ee38f2 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -175,6 +175,8 @@ static int ls_item(const unsigned char *sha1, const char *base, int baselen,
         if (ctx.repo->max_stats)
                 cgit_stats_link("stats", NULL, "button", ctx.qry.head,
                                 fullpath);
+        cgit_plain_link("plain", NULL, "button", ctx.qry.head, curr_rev,
+                        fullpath);
         html("</td></tr>\n");
         free(name);
         return 0;