From da76b39f69dca5f7f6876795047c5f68251118e7 Mon Sep 17 00:00:00 2001
From: Krzysztof Rudnicki <krzysztofrudnicki0@gmail.com>
Date: Mon, 8 Sep 2025 16:10:08 +0200
Subject: [PATCH] chore: more lint fixes

---
 articles/server_c.c | 62 +++++++++++++++------------------------------
 1 file changed, 21 insertions(+), 41 deletions(-)

diff --git a/articles/server_c.c b/articles/server_c.c
index e263701..e9e784c 100644
--- a/articles/server_c.c
+++ b/articles/server_c.c
@@ -123,30 +123,11 @@ static size_t json_escaped_len(const char* s) {
 }
 
 static inline char* json_append_escaped(char* w, char c) {
-  switch (c) {
-  case '"':
-    *w++ = '\\';
-    *w++ = '"';
-    break;
-  case '\\':
-    *w++ = '\\';
-    *w++ = '\\';
-    break;
-  case '\n':
-    *w++ = '\\';
-    *w++ = 'n';
-    break;
-  case '\r':
-    *w++ = '\\';
-    *w++ = 'r';
-    break;
-  case '\t':
-    *w++ = '\\';
-    *w++ = 't';
-    break;
-  default: *w++ = c; break;
-  }
-  return w;
+  if (c == '"' || c == '\\') { *w++ = '\\'; *w++ = c; return w; }
+  if (c == '\n') { *w++ = '\\'; *w++ = 'n'; return w; }
+  if (c == '\r') { *w++ = '\\'; *w++ = 'r'; return w; }
+  if (c == '\t') { *w++ = '\\'; *w++ = 't'; return w; }
+  *w++ = c; return w;
 }
 
 static void json_escape_into(char* out, const char* s) {
@@ -183,23 +164,12 @@ static inline char json_unescape_char(char c) {
 }
 
 static void parse_json_string_core(const char* v, char* out, size_t* w, const char** after_end) {
-  bool esc = false;
-  const char* p = v;
+  bool esc = false; const char* p = v;
   for (; *p; ++p) {
     char c = *p;
-    if (esc) {
-      out[(*w)++] = json_unescape_char(c);
-      esc = false;
-      continue;
-    }
-    if (c == '\\') {
-      esc = true;
-      continue;
-    }
-    if (c == '"') {
-      *after_end = p + 1;
-      break;
-    }
+    if (esc) { out[(*w)++] = json_unescape_char(c); esc = false; continue; }
+    if (c == '\\') { esc = true; continue; }
+    if (c == '"') { *after_end = p + 1; break; }
     out[(*w)++] = c;
   }
   if (!*after_end) *after_end = p;
@@ -979,7 +949,17 @@ static char* create_article_from_body(const char* body_json) {
       size_t i = 1, len = strlen(tcontent);
       char** items = NULL;
       size_t cap = 0, cnt = 0;
-      push_str(&items, &cap, &cnt, strdup(obj));
+      {
+        char* dup = strdup(obj);
+        if (!dup || push_str(&items, &cap, &cnt, dup)) {
+          free(dup);
+          free(tcontent);
+          free(file);
+          free(id);
+          free(obj);
+          return NULL;
+        }
+      }
       while (1) {
         char* one = NULL;
         int r = find_next_json_object(tcontent, len, &i, &one);
@@ -1272,7 +1252,7 @@ typedef struct {
   long long createdAt;
 } ArticleFields;
 
-static void load_fields(char* obj, ArticleFields* f) {
+static void load_fields(const char* obj, ArticleFields* f) {
   f->title = json_get_string(obj, "title");
   f->author = json_get_string(obj, "author");
   f->body = json_get_string(obj, "body");