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
@@ -195,6 +195,8 @@ void config_cb(const char *name, const char *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"))
diff --git a/cgit.h b/cgit.h
index 4090cd4..9b269cc 100644
--- a/cgit.h
+++ b/cgit.h
@@ -205,6 +205,7 @@ struct cgit_config {
         int noheader;
         int renamelimit;
         int remove_suffix;
+        int section_from_path;
         int snapshots;
         int summary_branches;
         int summary_log;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index c643fae..95782df 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -278,6 +278,12 @@ section::
         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".
diff --git a/scan-tree.c b/scan-tree.c
index e987824..6ba9193 100644
--- a/scan-tree.c
+++ b/scan-tree.c
@@ -61,11 +61,19 @@ static int git_owner_config(const char *key, const char *value, void *cb)
         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)) {
@@ -80,14 +88,14 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn)
         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';
@@ -113,6 +121,28 @@ static void add_repo(const char *base, const char *path, repo_config_fn fn)
         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)) {