Massive improvements

- Python CGI server script renamed to gateway.py to avoid confusion
- Repo not found error handling
- Page header & navs
- Fix faulty 20 response header
- View (non-)raw blob

1 files changed, 76 insertions, 0 deletions

diff --git a/git-gmi/gateway.py b/git-gmi/gateway.py
new file mode 100644
index 0000000..0ae963f
--- /dev/null
+++ b/git-gmi/gateway.py
@@ -0,0 +1,76 @@
+from git import *
+from const import *
+from os import environ, listdir
+
+# be careful when using print(); stdout is passed to the client.
+# this cgi uses \n as newline.
+
+
+def generate_navigation(repo_name: str):
+    pass  # TODO
+
+
+def handle_cgi_request(path: str, query: str):
+    # intended to work with Jetforce.
+    # url: gemini://git.gemini.site/cgi-bin/cgi.py/repo/src/static/css/[index.css]
+    # path: /repo/src/static/css/[index.css]
+    # path_trace = ['repo', 'src', 'static', 'css', 'index.css']
+    path_trace = path[1:].split("/")
+    if path_trace == [""]:  # empty path
+        print(f"{STATUS_SUCCESS} {META_GEMINI}")  # welcome page
+        print(f"# Welcome to {GIT_GMI_SITE_TITLE}")
+        print("## Available repositories:")
+        print("\n".join([f"=> {dir}/" for dir in listdir(GIT_CATALOG)]))
+        return
+
+    try:
+        repo = GitGmiRepo(path_trace[0], f"{GIT_CATALOG}/{path_trace[0]}")
+    except FileNotFoundError:
+        print(STATUS_NOT_FOUND)
+        return
+
+    if len(path_trace) > 1:
+        view = path_trace[1]  # e.g. summary, tree, log
+    else:
+        print("31 summary")
+        return
+
+    if view == "summary":
+        try:
+            print(repo.view_summary())
+            return
+        except:
+            print(STATUS_TEMPORARY_FAILURE)
+            return
+
+    elif view == "tree":
+        if len(path_trace) == 2:
+            print("31 master/")
+            return
+
+        if len(path_trace) > 2:
+            branch = path_trace[2]
+
+        location = path_trace[3:]
+
+        try:  # is dir
+            print(repo.view_tree(branch, location))
+        except FileNotFoundError:  # is file
+            try:
+                if query == "raw":
+                    print(repo.view_raw_blob(branch, location))
+                else:
+                    print(repo.view_blob(branch, location))
+            except FileNotFoundError:
+                print(STATUS_NOT_FOUND)
+
+    elif view == "log":
+        try:
+            print(repo.view_log())
+            return
+        except:
+            print(STATUS_TEMPORARY_FAILURE)
+            return
+
+
+handle_cgi_request(environ.get("PATH_INFO"), environ.get("QUERY_STRING"))