repolist: add owner-filter

This allows custom links to be used for repository owners by
configuring a filter to be applied in the "Owner" column in the
repository list.

7 files changed, 64 insertions, 8 deletions

diff --git a/cgit.c b/cgit.c
index 796cb7f..79019c2 100644
--- a/cgit.c
+++ b/cgit.c
@@ -91,6 +91,8 @@ static void repo_config(struct cgit_repo *repo, const char *name, const char *va
                         repo->source_filter = cgit_new_filter(value, SOURCE);
                 else if (!strcmp(name, "email-filter"))
                         repo->email_filter = cgit_new_filter(value, EMAIL);
+                else if (!strcmp(name, "owner-filter"))
+                        repo->owner_filter = cgit_new_filter(value, OWNER);
         }
 }
 
@@ -194,6 +196,8 @@ static void config_cb(const char *name, const char *value)
                 ctx.cfg.commit_filter = cgit_new_filter(value, COMMIT);
         else if (!strcmp(name, "email-filter"))
                 ctx.cfg.email_filter = cgit_new_filter(value, EMAIL);
+        else if (!strcmp(name, "owner-filter"))
+                ctx.cfg.owner_filter = cgit_new_filter(value, OWNER);
         else if (!strcmp(name, "auth-filter"))
                 ctx.cfg.auth_filter = cgit_new_filter(value, AUTH);
         else if (!strcmp(name, "embedded"))
@@ -800,6 +804,8 @@ static void print_repo(FILE *f, struct cgit_repo *repo)
                 cgit_fprintf_filter(repo->source_filter, f, "repo.source-filter=");
         if (repo->email_filter && repo->email_filter != ctx.cfg.email_filter)
                 cgit_fprintf_filter(repo->email_filter, f, "repo.email-filter=");
+        if (repo->owner_filter && repo->owner_filter != ctx.cfg.owner_filter)
+                cgit_fprintf_filter(repo->owner_filter, f, "repo.owner-filter=");
         if (repo->snapshots != ctx.cfg.snapshots) {
                 char *tmp = build_snapshot_setting(repo->snapshots);
                 fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
diff --git a/cgit.h b/cgit.h
index 0c1585d..42140ac 100644
--- a/cgit.h
+++ b/cgit.h
@@ -57,7 +57,7 @@ typedef enum {
 } diff_type;
 
 typedef enum {
-        ABOUT, COMMIT, SOURCE, EMAIL, AUTH
+        ABOUT, COMMIT, SOURCE, EMAIL, AUTH, OWNER
 } filter_type;
 
 struct cgit_filter {
@@ -104,6 +104,7 @@ struct cgit_repo {
         struct cgit_filter *commit_filter;
         struct cgit_filter *source_filter;
         struct cgit_filter *email_filter;
+        struct cgit_filter *owner_filter;
         struct string_list submodules;
 };
 
@@ -257,6 +258,7 @@ struct cgit_config {
         struct cgit_filter *commit_filter;
         struct cgit_filter *source_filter;
         struct cgit_filter *email_filter;
+        struct cgit_filter *owner_filter;
         struct cgit_filter *auth_filter;
 };
 
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index 104b223..be6703f 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -247,6 +247,15 @@ logo-link::
         calculated url of the repository index page will be used. Default
         value: none.
 
+owner-filter::
+        Specifies a command which will be invoked to format the Owner
+        column of the main page.  The command will get the owner on STDIN,
+        and the STDOUT from the command will be included verbatim in the
+        table.  This can be used to link to additional context such as an
+        owners home page.  When active this filter is used instead of the
+        default owner query url.  Default value: none.
+        See also: "FILTER API".
+
 max-atom-items::
         Specifies the number of items to display in atom feeds view. Default
         value: "10".
@@ -509,6 +518,10 @@ repo.logo-link::
         calculated url of the repository index page will be used. Default
         value: global logo-link.
 
+repo.owner-filter::
+        Override the default owner-filter. Default value: none. See also:
+        "enable-filter-overrides". See also: "FILTER API".
+
 repo.module-link::
         Text which will be used as the formatstring for a hyperlink when a
         submodule is printed in a directory listing. The arguments for the
@@ -641,6 +654,11 @@ email filter::
         expected to write to standard output the formatted text to be included
         in the page.
 
+owner filter::
+        This filter is given no arguments.  The owner text is avilable on
+        standard input and the filter is expected to write to standard
+        output.  The output is included in the Owner column.
+
 source filter::
         This filter is given a single parameter: the filename of the source
         file to filter. The filter can use the filename to determine (for
diff --git a/filter.c b/filter.c
index 270f009..9f433db 100644
--- a/filter.c
+++ b/filter.c
@@ -38,12 +38,14 @@ void cgit_cleanup_filters(void)
         reap_filter(ctx.cfg.commit_filter);
         reap_filter(ctx.cfg.source_filter);
         reap_filter(ctx.cfg.email_filter);
+        reap_filter(ctx.cfg.owner_filter);
         reap_filter(ctx.cfg.auth_filter);
         for (i = 0; i < cgit_repolist.count; ++i) {
                 reap_filter(cgit_repolist.repos[i].about_filter);
                 reap_filter(cgit_repolist.repos[i].commit_filter);
                 reap_filter(cgit_repolist.repos[i].source_filter);
                 reap_filter(cgit_repolist.repos[i].email_filter);
+                reap_filter(cgit_repolist.repos[i].owner_filter);
         }
 }
 
@@ -425,6 +427,10 @@ struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype)
                         argument_count = 2;
                         break;
 
+                case OWNER:
+                        argument_count = 0;
+                        break;
+
                 case SOURCE:
                 case ABOUT:
                         argument_count = 1;
diff --git a/filters/owner-example.lua b/filters/owner-example.lua
new file mode 100644
index 0000000..50fc25a
--- /dev/null
+++ b/filters/owner-example.lua
@@ -0,0 +1,17 @@
+-- This script is an example of an owner-filter.  It replaces the
+-- usual query link with one to a fictional homepage.  This script may
+-- be used with the owner-filter or repo.owner-filter settings in
+-- cgitrc with the `lua:` prefix.
+
+function filter_open()
+        buffer = ""
+end
+
+function filter_close()
+        html(string.format("<a href=\"%s\">%s</a>", "http://wiki.example.com/about/" .. buffer, buffer))
+        return 0
+end
+
+function filter_write(str)
+        buffer = buffer .. str
+end
diff --git a/shared.c b/shared.c
index 8ed14c0..6e91857 100644
--- a/shared.c
+++ b/shared.c
@@ -72,6 +72,7 @@ struct cgit_repo *cgit_add_repo(const char *url)
         ret->commit_filter = ctx.cfg.commit_filter;
         ret->source_filter = ctx.cfg.source_filter;
         ret->email_filter = ctx.cfg.email_filter;
+        ret->owner_filter = ctx.cfg.owner_filter;
         ret->clone_url = ctx.cfg.clone_url;
         ret->submodules.strdup_strings = 1;
         return ret;
diff --git a/ui-repolist.c b/ui-repolist.c
index 49c991f..f929cb7 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -307,13 +307,19 @@ void cgit_print_repolist()
                 html_link_close();
                 html("</td><td>");
                 if (ctx.cfg.enable_index_owner) {
-                        html("<a href='");
-                        html_attr(cgit_rooturl());
-                        html("?q=");
-                        html_url_arg(ctx.repo->owner);
-                        html("'>");
-                        html_txt(ctx.repo->owner);
-                        html("</a>");
+                        if (ctx.repo->owner_filter) {
+                                cgit_open_filter(ctx.repo->owner_filter);
+                                html_txt(ctx.repo->owner);
+                                cgit_close_filter(ctx.repo->owner_filter);
+                        } else {
+                                html("<a href='");
+                                html_attr(cgit_rooturl());
+                                html("?=");
+                                html_url_arg(ctx.repo->owner);
+                                html("'>");
+                                html_txt(ctx.repo->owner);
+                                html("</a>");
+                        }
                         html("</td><td>");
                 }
                 print_modtime(ctx.repo);