Allow admins to define their own stylesheet

slcl used to provide a hardcoded stylesheet. However, it would be
desirable for some admins to provide a custom stylesheet without having
to rebuild the application.

Now, slcl creates a default stylesheet, namely style.css, into the
target directory, that can be later modified by admins.

While this might contradict the suckless philosophy a bit, hopefully
some admins might find this new feature useful.

1 files changed, 26 insertions, 54 deletions

diff --git a/page.c b/page.c
index eb7ae99..6093d7f 100644
--- a/page.c
+++ b/page.c
@@ -1535,73 +1535,45 @@ int page_bad_request(struct http_response *const r)
     return 0;
 }
 
-int page_style(struct http_response *const r)
+int page_style(struct http_response *const r, const char *const path)
 {
-    static const char body[] =
-    "body\n"
-    "{\n"
-    "    font-family: 'Courier New', Courier, monospace;\n"
-    "}\n"
-    "td\n"
-    "{\n"
-    "    font-size: 14px;\n"
-    "}\n"
-    "a\n"
-    "{\n"
-    "    text-decoration: none;\n"
-    "}\n"
-    ".userform\n"
-    "{\n"
-    "    padding: 4px;\n"
-    "}\n"
-    ".loginform\n"
-    "{\n"
-    "    display: grid;\n"
-    "}\n"
-    "form, label, table\n"
-    "{\n"
-    "    margin: auto;\n"
-    "}\n"
-    "div\n"
-    "{\n"
-    "    align-items: center;\n"
-    "    display: grid;\n"
-    "}\n"
-    "input, .abutton\n"
-    "{\n"
-    "    margin: auto;\n"
-    "    border: 1px solid;\n"
-    "    border-radius: 8px;\n"
-    "}\n"
-    "header, footer\n"
-    "{\n"
-    "    display: flex;\n"
-    "    justify-content: center;\n"
-    "    text-decoration: auto;\n"
-    "}\n"
-    "table\n"
-    "{\n"
-    "    max-width: 50%;\n"
-    "}\n"
-    "tr:nth-child(even)\n"
-    "{\n"
-    "    background-color: lightgray;\n"
-    "}\n";
+    FILE *f = NULL;
+    struct stat sb;
+
+    if (stat(path, &sb))
+    {
+        fprintf(stderr, "%s: stat(2): %s\n", __func__, strerror(errno));
+        goto failure;
+    }
+    else if (!(f = fopen(path, "rb")))
+    {
+        fprintf(stderr, "%s: fopen(3) %s: %s\n",
+            __func__, path, strerror(errno));
+        goto failure;
+    }
 
     *r = (const struct http_response)
     {
         .status = HTTP_STATUS_OK,
-        .buf.ro = body,
-        .n = sizeof body - 1
+        .f = f,
+        .n = sb.st_size
     };
 
     if (http_response_add_header(r, "Content-Type", "text/css"))
     {
         fprintf(stderr, "%s: http_response_add_header failed\n", __func__);
-        return -1;
+        goto failure;
     }
 
     return 0;
+
+failure:
+
+    if (f && fclose(f))
+        fprintf(stderr, "%s: fclose(3) %s: %s\n",
+            __func__, path, strerror(errno));
+
+    return -1;
 }
 
 int page_share(struct http_response *const r, const char *const path)