Add support for 'section-from-path' option

This option can be used to autogenerate section names during scan-path
processing.

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

4 files changed, 45 insertions, 6 deletions

diff --git a/cgit.c b/cgit.c
index d6146e2..5666875 100644
--- a/cgit.c
+++ b/cgit.c
@@ -192,12 +192,14 @@ void config_cb(const char *name, const char *value)
 			process_cached_repolist(expand_macros(value));
 		else if (ctx.cfg.project_list)
 			scan_projects(expand_macros(value),
 				      ctx.cfg.project_list, repo_config);
 		else
 			scan_tree(expand_macros(value), repo_config);
+	else if (!strcmp(name, "section-from-path"))
+		ctx.cfg.section_from_path = atoi(value);
 	else if (!strcmp(name, "source-filter"))
 		ctx.cfg.source_filter = new_filter(value, 1);
 	else if (!strcmp(name, "summary-log"))
 		ctx.cfg.summary_log = atoi(value);
 	else if (!strcmp(name, "summary-branches"))
 		ctx.cfg.summary_branches = atoi(value);
diff --git a/cgit.h b/cgit.h
index 4090cd4..9b269cc 100644
--- a/cgit.h
+++ b/cgit.h
@@ -202,12 +202,13 @@ struct cgit_config {
 	int max_stats;
 	int nocache;
 	int noplainemail;
 	int noheader;
 	int renamelimit;
 	int remove_suffix;
+	int section_from_path;
 	int snapshots;
 	int summary_branches;
 	int summary_log;
 	int summary_tags;
 	int ssdiff;
 	struct string_list mimetypes;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index c643fae..95782df 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -275,12 +275,18 @@ scan-path::
 
 section::
 	The name of the current repository section - all repositories defined
 	after this option will inherit the current section name. Default value:
 	none.
 
+section-from-path::
+	A number which, if specified before scan-path, specifies how many
+	path elements from each repo path to use as a default section name.
+	If negative, cgit will discard the specified number of path elements
+	above the repo directory. Default value: 0.
+
 side-by-side-diffs::
 	If set to "1" shows side-by-side diffs instead of unidiffs per
 	default. Default value: "0".
 
 snapshots::
 	Text which specifies the default set of snapshot formats generated by
diff --git a/scan-tree.c b/scan-tree.c
index e987824..6ba9193 100644
--- a/scan-tree.c
+++ b/scan-tree.c
@@ -58,17 +58,25 @@ static int git_owner_config(const char *key, const char *value, void *cb)
 {
 	if (!strcmp(key, "gitweb.owner"))
 		owner = xstrdup(value);
 	return 0;
 }
 
+static char *xstrrchr(char *s, char *from, int c)
+{
+	while (from >= s && *from != c)
+		from--;
+	return from < s ? NULL : from;
+}
+
 static void add_repo(const char *base, const char *path, repo_config_fn fn)
 {
 	struct stat st;
 	struct passwd *pwd;
-	char *p;
+	char *rel, *p, *slash;
+	int n;
 	size_t size;
 
 	if (stat(path, &st)) {
 		fprintf(stderr, "Error accessing %s: %s (%d)\n",
 			path, strerror(errno), errno);
 		return;
@@ -77,20 +85,20 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn)
 		return;
 
 	owner = NULL;
 	if (ctx.cfg.enable_gitweb_owner)
 		git_config_from_file(git_owner_config, fmt("%s/config", path), NULL);
 	if (base == path)
-		p = fmt("%s", path);
+		rel = xstrdup(fmt("%s", path));
 	else
-		p = fmt("%s", path + strlen(base) + 1);
+		rel = xstrdup(fmt("%s", path + strlen(base) + 1));
 
-	if (!strcmp(p + strlen(p) - 5, "/.git"))
-		p[strlen(p) - 5] = '\0';
+	if (!strcmp(rel + strlen(rel) - 5, "/.git"))
+		rel[strlen(rel) - 5] = '\0';
 
-	repo = cgit_add_repo(xstrdup(p));
+	repo = cgit_add_repo(rel);
 	if (ctx.cfg.remove_suffix)
 		if ((p = strrchr(repo->url, '.')) && !strcmp(p, ".git"))
 			*p = '\0';
 	repo->name = repo->url;
 	repo->path = xstrdup(path);
 	while (!owner) {
@@ -110,12 +118,34 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn)
 	if (!stat(p, &st))
 		readfile(p, &repo->desc, &size);
 
 	p = fmt("%s/README.html", path);
 	if (!stat(p, &st))
 		repo->readme = "README.html";
+	if (ctx.cfg.section_from_path) {
+		n  = ctx.cfg.section_from_path;
+		if (n > 0) {
+			slash = rel;
+			while (slash && n && (slash = strchr(slash, '/')))
+				n--;
+		} else {
+			slash = rel + strlen(rel);
+			while (slash && n && (slash = xstrrchr(rel, slash, '/')))
+				n++;
+		}
+		if (slash && !n) {
+			*slash = '\0';
+			repo->section = xstrdup(rel);
+			*slash = '/';
+			if (!prefixcmp(repo->name, repo->section)) {
+				repo->name += strlen(repo->section);
+				if (*repo->name == '/')
+					repo->name++;
+			}
+		}
+	}
 
 	p = fmt("%s/cgitrc", path);
 	if (!stat(p, &st)) {
 		config_fn = fn;
 		parse_configfile(xstrdup(p), &repo_config);
 	}