dotfiles

commit eecf8a942132e5752394dc4850617d707ab970e3
parent cd74933572fadd4fe31ab2284025366f3eaa91db
Author: maydayv7 <maydayv7@gmail.com>
Date:   Wed, 23 Sep 2026 19:48:55 +0530

fix(gitsite): Content limit

Diffstat:

3 files changed, 36 insertions(+), 7 deletions(-)
diff --git a/site/git/stagit/README.md b/site/git/stagit/README.md
@@ -14,6 +14,7 @@ This is my personal fork of [stagit](https://git.codemadness.org/stagit/).
   - Code syntax highlighting with [Pygments](https://pygments.org/)
   - Markdown rendering with [Python-Markdown](https://github.com/Python-Markdown/markdown)
   - Tables, task lists, GitHub callouts and math markup
+- File and diff previews limited to 2 MiB
 - Modified markup and shared elements through the website's [build](../default.nix) and [assembly](../assemble.py)
 
 ## Usage
diff --git a/site/git/stagit/render.py b/site/git/stagit/render.py
@@ -10,8 +10,9 @@ from pygments.formatters import HtmlFormatter
 from pygments.lexers import get_lexer_for_filename, TextLexer
 from pygments.util import ClassNotFound
 
-# Highlighting Limit
+# Preview Limits
 MAX_HIGHLIGHT = 512 * 1024
+MAX_OUTPUT = 8 * 1024 * 1024
 FORMAT = HtmlFormatter(
     cssclass="highlight",
     linenos="inline",
@@ -83,6 +84,8 @@ def safe_attribute(tag, attr, value):
 
 
 def render(filename, contents):
+    lexer = TextLexer() if len(contents) > MAX_HIGHLIGHT else lexer_for(filename)
+    print(f"Filename: {filename!r}; Lexer: {lexer.name}.", file=sys.stderr, flush=True)
     rendered = ""
     if len(contents) <= MAX_HIGHLIGHT and filename.lower().endswith(
         (".md", ".markdown", ".mdown")
@@ -104,6 +107,7 @@ def render(filename, contents):
             + markup
             + "</article><h3>Code</h3>"
         )
+        print("Markdown was rendered in addition.", file=sys.stderr, flush=True)
     if len(contents) > MAX_HIGHLIGHT:
         # Plain Text
         code = (
@@ -115,8 +119,16 @@ def render(filename, contents):
             + "</pre>"
         )
     else:
-        code = highlight(contents, lexer_for(filename), FORMAT)
-    return rendered + '<div id="blob">' + code + "</div>"
+        code = highlight(contents, lexer, FORMAT)
+    result = rendered + '<div id="blob">' + code + "</div>"
+    if len(result.encode("utf-8")) > MAX_OUTPUT:
+        print(
+            f"Skipping {filename!r}: rendered HTML exceeds 8 MiB.",
+            file=sys.stderr,
+            flush=True,
+        )
+        return "<p>File is too large to display.</p>"
+    return result
 
 
 if __name__ == "__main__":
diff --git a/site/git/stagit/stagit.c b/site/git/stagit/stagit.c
@@ -18,6 +18,7 @@
 #include "compat.h"
 
 #define CMD_BUFSIZE 255
+#define MAX_CONTENT_SIZE (2 * 1024 * 1024)
 
 #define LEN(s) (sizeof(s) / sizeof(*s))
 
@@ -651,6 +652,7 @@ void printshowfile(FILE *fp, struct commitinfo *ci) {
   const git_diff_line *line;
   git_patch *patch;
   size_t nhunks, nhunklines, changed, add, del, total, i, j, k;
+  size_t diffsize = 0;
   char linestr[80];
   int c;
 
@@ -659,9 +661,15 @@ void printshowfile(FILE *fp, struct commitinfo *ci) {
   if (!ci->deltas)
     return;
 
+  for (i = 0; i < ci->ndeltas; i++) {
+    diffsize += git_patch_size(ci->deltas[i]->patch, 1, 1, 1);
+    if (diffsize > MAX_CONTENT_SIZE)
+      break;
+  }
   if (ci->filecount > 1000 || ci->ndeltas > 1000 || ci->addcount > 100000 ||
-      ci->delcount > 100000) {
+      ci->delcount > 100000 || diffsize > MAX_CONTENT_SIZE) {
     fputs("Diff is too large, output suppressed.\n", fp);
+    fprintf(stderr, "Skipping diff %s: preview limit exceeded.\n", ci->oid);
     return;
   }
 
@@ -1006,10 +1014,18 @@ size_t writeblob(git_object *obj, const char *fpath, const char *filename,
   fprintf(fp, " (%zuB)", filesize);
   fputs("</p><hr/>", fp);
 
-  if (git_blob_is_binary((git_blob *)obj))
+  if (filesize > MAX_CONTENT_SIZE) {
+    fprintf(fp, "<p>File is too large to display (limit: %d MiB).</p>\n",
+            MAX_CONTENT_SIZE / (1024 * 1024));
+    fprintf(stderr, "Skipping %s (%zu bytes): preview limit exceeded.\n",
+            filename, filesize);
+  } else if (filesize && git_blob_data_is_binary(
+                             git_blob_rawcontent((git_blob *)obj), filesize)) {
     fputs("<p>Binary file.</p>\n", fp);
-  else
+    fprintf(stderr, "Skipping %s: binary file.\n", filename);
+  } else {
     lc = writeblobhtml(filename, fp, (git_blob *)obj);
+  }
 
   writefooter(fp);
   checkfileerror(fp, fpath, 'w');
@@ -1108,7 +1124,7 @@ int writefilestree(FILE *fp, git_tree *tree, const char *path) {
       }
 
       filesize = git_blob_rawsize((git_blob *)obj);
-      lc = writeblob(obj, filepath, entryname, filesize);
+      lc = writeblob(obj, filepath, entrypath, filesize);
 
       fputs("<tr><td>", fp);
       fputs(filemode(git_tree_entry_filemode(entry)), fp);