Add support for a renamelimit option in cgitrc

This option can be used to override the default rename-limit in git.

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

2 files changed, 11 insertions, 0 deletions

diff --git a/cgitrc b/cgitrc
index 34ea116..796a62c 100644
--- a/cgitrc
+++ b/cgitrc
@@ -20,48 +20,55 @@
 ## Enable/disable display of 'number of files changed' in log view
 #enable-log-filecount=0
 
 
 ## Enable/disable display of 'number of lines changed' in log view
 #enable-log-linecount=0
 
 
 ## Enable/disable display of HEAD shortlog in summary view. Set it to maximum
 ## number of commits that should be displayed
 #summary-log=0
 
 
 ## The "Idle" column on the repository index page can read a timestamp
 ## from the specified agefile (if this file cannot be found, the mtime
 ## of HEAD is used).
 ## The cgit repo on hjemli.net uses the the following command in it's
 ## post-receive hook to update the age-file:
 ##   git-for-each-ref --format="%(committerdate)" --sort=-committerdate \
 ##     --count=1 > $GIT_DIR/info/web/last-modifie
 ##
 #agefile=info/web/last-modified
 
 
+## Git detects renames, but with a limit on the number of files to
+## consider. This option can be used to specify another limit (or -1 to
+## use the default limit).
+##
+#renamelimit=-1
+
+
 ## Specify a root for virtual urls. This makes cgit generate urls like
 ##
 ##    http://localhost/git/repo/log/?h=branch
 ##
 ## instead of
 ##
 ##    http://localhost/cgit/cgit.cgi?url=repo/log&h=branch
 ##
 ## For this to work with apache, a rewrite rule must be added to httpd.conf,
 ## possibly looking something like this:
 ##
 ##    RewriteRule ^/git/(.*)$ /cgit/cgit.cgi?url=$1   [L,QSA]
 ##
 ## For this to work with lighttpd, the rewrite rule should look more like this:
 ##
 ##    url.rewrite = (
 ##        "^/git/([^?/]+/[^?]*)?(?:\?(.*))?$" => "/cgit.cgi?url=$1&$2"
 ##    )
 ##
 ## This setting is disabled by default.
 #virtual-root=/git
 
 
 ## Set the title printed on the root page
diff --git a/shared.c b/shared.c
index 0fe513f..0a6a5ed 100644
--- a/shared.c
+++ b/shared.c
@@ -17,48 +17,49 @@ 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_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;
 
 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_renamelimit           = -1;
 
 int cgit_max_msg_len = 60;
 int cgit_max_repodesc_len = 60;
 int cgit_max_commit_count = 50;
 
 int cgit_query_has_symref = 0;
 int cgit_query_has_sha1   = 0;
 
 char *cgit_querystring  = NULL;
 char *cgit_query_repo   = NULL;
 char *cgit_query_page   = NULL;
 char *cgit_query_head   = NULL;
 char *cgit_query_search = NULL;
 char *cgit_query_sha1   = NULL;
 char *cgit_query_sha2   = NULL;
 char *cgit_query_path   = NULL;
 char *cgit_query_name   = NULL;
 int   cgit_query_ofs    = 0;
 
 int htmlfd = 0;
 
 
 int cgit_get_cmd_index(const char *cmd)
 {
@@ -161,48 +162,50 @@ void cgit_global_config_cb(const char *name, const char *value)
         else if (!strcmp(name, "enable-log-filecount"))
                 cgit_enable_log_filecount = atoi(value);
         else if (!strcmp(name, "enable-log-linecount"))
                 cgit_enable_log_linecount = atoi(value);
         else if (!strcmp(name, "cache-root"))
                 cgit_cache_root = xstrdup(value);
         else if (!strcmp(name, "cache-root-ttl"))
                 cgit_cache_root_ttl = atoi(value);
         else if (!strcmp(name, "cache-repo-ttl"))
                 cgit_cache_repo_ttl = atoi(value);
         else if (!strcmp(name, "cache-static-ttl"))
                 cgit_cache_static_ttl = atoi(value);
         else if (!strcmp(name, "cache-dynamic-ttl"))
                 cgit_cache_dynamic_ttl = atoi(value);
         else if (!strcmp(name, "max-message-length"))
                 cgit_max_msg_len = atoi(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, "agefile"))
                 cgit_agefile = xstrdup(value);
+        else if (!strcmp(name, "renamelimit"))
+                cgit_renamelimit = atoi(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.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 == '/')
@@ -370,45 +373,46 @@ int cgit_diff_files(const unsigned char *old_sha1,
 
         if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
                 return 1;
 
         diff_params.flags = XDF_NEED_MINIMAL;
         emit_params.ctxlen = 3;
         emit_params.flags = XDL_EMIT_FUNCNAMES;
         emit_params.find_func = NULL;
         emit_cb.outf = filediff_cb;
         emit_cb.priv = fn;
         xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
         return 0;
 }
 
 void cgit_diff_tree(const unsigned char *old_sha1,
                     const unsigned char *new_sha1,
                     filepair_fn fn)
 {
         struct diff_options opt;
         int ret;
 
         diff_setup(&opt);
         opt.output_format = DIFF_FORMAT_CALLBACK;
         opt.detect_rename = 1;
+        opt.rename_limit = cgit_renamelimit;
         opt.recursive = 1;
         opt.format_callback = cgit_diff_tree_cb;
         opt.format_callback_data = fn;
         diff_setup_done(&opt);
 
         if (old_sha1 && !is_null_sha1(old_sha1))
                 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
         else
                 ret = diff_root_tree_sha1(new_sha1, "", &opt);
         diffcore_std(&opt);
         diff_flush(&opt);
 }
 
 void cgit_diff_commit(struct commit *commit, filepair_fn fn)
 {
         unsigned char *old_sha1 = NULL;
 
         if (commit->parents)
                 old_sha1 = commit->parents->item->object.sha1;
         cgit_diff_tree(old_sha1, commit->object.sha1, fn);
 }