Add support for automatic and custom clone urls

This adds support for two new parameters to cgitrc: clone-prefix and
repo.clone-url.

If clone-prefix is specified, all repos will get a clone url printed in the
sidebar; the url is generated by clone-prefix + repo.url.

Additionally, each repo can specify repo.clone-url which will override any
such auto-generated url.

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

4 files changed, 31 insertions, 0 deletions

diff --git a/cgit.h b/cgit.h
index ab0efeb..f223dbc 100644
--- a/cgit.h
+++ b/cgit.h
@@ -62,32 +62,33 @@ struct cacheitem {
         char *name;
         struct stat st;
         int ttl;
         int fd;
 };
 
 struct repoinfo {
         char *url;
         char *name;
         char *path;
         char *desc;
         char *owner;
         char *defbranch;
         char *group;
         char *module_link;
         char *readme;
+        char *clone_url;
         int snapshots;
         int enable_log_filecount;
         int enable_log_linecount;
 };
 
 struct repolist {
         int length;
         int count;
         struct repoinfo *repos;
 };
 
 struct commitinfo {
         struct commit *commit;
         char *author;
         char *author_email;
         unsigned long author_date;
@@ -127,32 +128,33 @@ extern struct repolist cgit_repolist;
 extern struct repoinfo *cgit_repo;
 extern int cgit_cmd;
 
 extern char *cgit_root_title;
 extern char *cgit_css;
 extern char *cgit_logo;
 extern char *cgit_index_header;
 extern char *cgit_index_info;
 extern char *cgit_logo_link;
 extern char *cgit_module_link;
 extern char *cgit_agefile;
 extern char *cgit_virtual_root;
 extern char *cgit_script_name;
 extern char *cgit_cache_root;
 extern char *cgit_repo_group;
 extern char *cgit_robots;
+extern char *cgit_clone_prefix;
 
 extern int cgit_nocache;
 extern int cgit_snapshots;
 extern int cgit_enable_index_links;
 extern int cgit_enable_log_filecount;
 extern int cgit_enable_log_linecount;
 extern int cgit_max_lock_attempts;
 extern int cgit_cache_root_ttl;
 extern int cgit_cache_repo_ttl;
 extern int cgit_cache_dynamic_ttl;
 extern int cgit_cache_static_ttl;
 extern int cgit_cache_max_create_time;
 extern int cgit_summary_log;
 extern int cgit_summary_tags;
 extern int cgit_summary_branches;
 
diff --git a/cgitrc b/cgitrc
index 8c616e0..ce0c01b 100644
--- a/cgitrc
+++ b/cgitrc
@@ -103,32 +103,37 @@
 ## Link to css file
 #css=/cgit/cgit.css
 
 
 ## Link to logo file
 #logo=/cgit/git-logo.png
 
 
 ## Url loaded when clicking the logo
 #logo-link=http://www.kernel.org/pub/software/scm/git/docs/
 
 
 ## Url loaded when clicking a submodule link
 #module-link=./?repo=%s&page=commit&id=%s
 
 
+## Shared prefix which, when combined with repo url, becomes the url used
+## to clone the repo
+#clone-prefix=
+
+
 ## Number of chars shown of repo description (in repolist view)
 #max-repodesc-length=60
 
 
 ## Number of chars shown of commit subject message (in log view)
 #max-message-length=60
 
 
 ## Number of commits per page in log view
 #max-commit-count=50
 
 
 ## Root of cached output
 #cache-root=/var/cache/cgit
 
 
@@ -154,34 +159,36 @@
 
 
 
 ## Example repository entry. Required values are repo.url and repo.path (each
 ## repository section must start with repo.url).
 #repo.url=cgit
 #repo.name=cgit
 #repo.desc=the caching cgi for git
         #repo.path=/pub/git/cgit                ## this is the path to $GIT_DIR
 #repo.owner=Lars Hjemli
         #repo.defbranch=master                  ## define a default branch
         #repo.snapshots=tar.bz2                         ## override a sitewide snapshot-setting
         #repo.enable-log-filecount=0            ## override the default filecount setting
         #repo.enable-log-linecount=0            ## override the default linecount setting
         #repo.module-link=/git/%s/commit/?id=%s         ## override the standard module-link
         #repo.readme=info/web/readme            ## specify a file to include on summary page
+#repo.clone-url=git://hjemli.net/pub/git/cgit
 
 ## Additional repositories grouped under "mirrors"
 #repo.group=mirrors
 
 #repo.url=git
 #repo.path=/pub/git/git
+#repo.clone-url=git://hjemli.net/pub/git/git
 #
 #repo.url=linux
 #repo.path=/pub/git/linux
 
 ## A group of private repositories (with a working directory)
 #repo.group=private
 
 #repo.url=larsh/cgit
 #repo.path=/home/larsh/src/cgit/.git
 
 #repo.url=larsh/git
 #repo.path=/home/larsh/src/git/.git
diff --git a/shared.c b/shared.c
index fd8b1e3..2c309f5 100644
--- a/shared.c
+++ b/shared.c
@@ -14,32 +14,33 @@ int cgit_cmd;
 
 const char *cgit_version = CGIT_VERSION;
 
 char *cgit_root_title   = "Git repository browser";
 char *cgit_css          = "/cgit.css";
 char *cgit_logo         = "/git-logo.png";
 char *cgit_index_header = NULL;
 char *cgit_index_info   = NULL;
 char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
 char *cgit_module_link  = "./?repo=%s&page=commit&id=%s";
 char *cgit_agefile      = "info/web/last-modified";
 char *cgit_virtual_root = NULL;
 char *cgit_script_name  = CGIT_SCRIPT_NAME;
 char *cgit_cache_root   = CGIT_CACHE_ROOT;
 char *cgit_repo_group   = NULL;
 char *cgit_robots       = "index, nofollow";
+char *cgit_clone_prefix = NULL;
 
 int cgit_nocache               =  0;
 int cgit_snapshots             =  0;
 int cgit_enable_index_links    =  0;
 int cgit_enable_log_filecount  =  0;
 int cgit_enable_log_linecount  =  0;
 int cgit_max_lock_attempts     =  5;
 int cgit_cache_root_ttl        =  5;
 int cgit_cache_repo_ttl        =  5;
 int cgit_cache_dynamic_ttl     =  5;
 int cgit_cache_static_ttl      = -1;
 int cgit_cache_max_create_time =  5;
 int cgit_summary_log           =  0;
 int cgit_summary_tags          =  0;
 int cgit_summary_branches      =  0;
 int cgit_renamelimit           = -1;
@@ -187,40 +188,44 @@ void cgit_global_config_cb(const char *name, const char *value)
         else if (!strcmp(name, "max-repodesc-length"))
                 cgit_max_repodesc_len = atoi(value);
         else if (!strcmp(name, "max-commit-count"))
                 cgit_max_commit_count = atoi(value);
         else if (!strcmp(name, "summary-log"))
                 cgit_summary_log = atoi(value);
         else if (!strcmp(name, "summary-branches"))
                 cgit_summary_branches = atoi(value);
         else if (!strcmp(name, "summary-tags"))
                 cgit_summary_tags = atoi(value);
         else if (!strcmp(name, "agefile"))
                 cgit_agefile = xstrdup(value);
         else if (!strcmp(name, "renamelimit"))
                 cgit_renamelimit = atoi(value);
         else if (!strcmp(name, "robots"))
                 cgit_robots = xstrdup(value);
+        else if (!strcmp(name, "clone-prefix"))
+                cgit_clone_prefix = xstrdup(value);
         else if (!strcmp(name, "repo.group"))
                 cgit_repo_group = xstrdup(value);
         else if (!strcmp(name, "repo.url"))
                 cgit_repo = add_repo(value);
         else if (!strcmp(name, "repo.name"))
                 cgit_repo->name = xstrdup(value);
         else if (cgit_repo && !strcmp(name, "repo.path"))
                 cgit_repo->path = trim_end(value, '/');
+        else if (cgit_repo && !strcmp(name, "repo.clone-url"))
+                cgit_repo->clone_url = xstrdup(value);
         else if (cgit_repo && !strcmp(name, "repo.desc"))
                 cgit_repo->desc = xstrdup(value);
         else if (cgit_repo && !strcmp(name, "repo.owner"))
                 cgit_repo->owner = xstrdup(value);
         else if (cgit_repo && !strcmp(name, "repo.defbranch"))
                 cgit_repo->defbranch = xstrdup(value);
         else if (cgit_repo && !strcmp(name, "repo.snapshots"))
                 cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
         else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
                 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
         else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
                 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
         else if (cgit_repo && !strcmp(name, "repo.module-link"))
                 cgit_repo->module_link= xstrdup(value);
         else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
                 if (*value == '/')
diff --git a/ui-shared.c b/ui-shared.c
index 3e13c86..ece041c 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -447,64 +447,81 @@ void add_hidden_formfields(int incl_head, int incl_search, char *page)
                 html_hidden("id", cgit_query_sha1);
         if (cgit_query_sha2)
                 html_hidden("id2", cgit_query_sha2);
 
         if (incl_search) {
                 if (cgit_query_grep)
                         html_hidden("qt", cgit_query_grep);
                 if (cgit_query_search)
                         html_hidden("q", cgit_query_search);
         }
 }
 
 void cgit_print_pageheader(char *title, int show_search)
 {
         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",
               cgit_logo);
         html("</td></tr>\n<tr><td class='sidebar'>\n");
         if (cgit_query_repo) {
                 html("<h1 class='first'>");
                 html_txt(strrpart(cgit_repo->name, 20));
                 html("</h1>\n");
                 html_txt(cgit_repo->desc);
                 if (cgit_repo->owner) {
                         html("<h1>owner</h1>\n");
                         html_txt(cgit_repo->owner);
                 }
                 html("<h1>navigate</h1>\n");
                 reporevlink(NULL, "summary", NULL, "menu", cgit_query_head,
                             NULL, NULL);
                 cgit_log_link("log", NULL, "menu", cgit_query_head, NULL, NULL,
                               0, NULL, NULL);
                 cgit_tree_link("tree", NULL, "menu", cgit_query_head,
                                cgit_query_sha1, NULL);
                 cgit_commit_link("commit", NULL, "menu", cgit_query_head,
                               cgit_query_sha1);
                 cgit_diff_link("diff", NULL, "menu", cgit_query_head,
                                cgit_query_sha1, cgit_query_sha2, NULL);
 
                 for_each_ref(print_archive_ref, &header);
 
+                if (cgit_repo->clone_url || cgit_clone_prefix) {
+                        html("<h1>clone</h1>\n");
+                        if (cgit_repo->clone_url)
+                                url = cgit_repo->clone_url;
+                        else
+                                url = fmt("%s%s", cgit_clone_prefix,
+                                          cgit_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, cgit_query_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, cgit_query_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 (cgit_virtual_root)
                         html_attr(cgit_fileurl(cgit_query_repo, "log",