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
@@ -197,2 +197,4 @@ void config_cb(const char *name, const char *value)
 			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"))
diff --git a/cgit.h b/cgit.h
index 4090cd4..9b269cc 100644
--- a/cgit.h
+++ b/cgit.h
@@ -207,2 +207,3 @@ struct cgit_config {
 	int remove_suffix;
+	int section_from_path;
 	int snapshots;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index c643fae..95782df 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -280,2 +280,8 @@ section::
 
+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::
diff --git a/scan-tree.c b/scan-tree.c
index e987824..6ba9193 100644
--- a/scan-tree.c
+++ b/scan-tree.c
@@ -63,2 +63,9 @@ static int git_owner_config(const char *key, const char *value, void *cb)
 
+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)
@@ -67,3 +74,4 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn)
 	struct passwd *pwd;
-	char *p;
+	char *rel, *p, *slash;
+	int n;
 	size_t size;
@@ -82,10 +90,10 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn)
 	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)
@@ -115,2 +123,24 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn)
 		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++;
+			}
+		}
+	}