git subrepo clone https://github.com/Atmosphere-NX/Atmosphere-libs libraries

subrepo:
  subdir:   "libraries"
  merged:   "07af583b"
upstream:
  origin:   "https://github.com/Atmosphere-NX/Atmosphere-libs"
  branch:   "master"
  commit:   "07af583b"
git-subrepo:
  version:  "0.4.0"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "5d6aba9"

libraries/libstratosphere/source/util/util_ini.cpp

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2018-2019 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stratosphere.hpp>
+#include "ini.h"
+
+namespace ams::util::ini {
+
+    /* Ensure that types are the same for Handler vs ini_handler. */
+    static_assert(std::is_same<Handler, ::ini_handler>::value, "Bad ini::Handler definition!");
+
+    namespace {
+
+        struct FsFileContext {
+            FsFile *f;
+            size_t offset;
+            size_t num_left;
+
+            explicit FsFileContext(FsFile *f) : f(f), offset(0) {
+                s64 size;
+                R_ASSERT(fsFileGetSize(this->f, &size));
+                this->num_left = size_t(size);
+            }
+        };
+
+        char *ini_reader_fs_file(char *str, int num, void *stream) {
+            FsFileContext *ctx = reinterpret_cast<FsFileContext *>(stream);
+
+            if (ctx->num_left == 0 || num < 2) {
+                return nullptr;
+            }
+
+            /* Read as many bytes as we can. */
+            size_t try_read = std::min(size_t(num - 1), ctx->num_left);
+            size_t actually_read;
+            R_ASSERT(fsFileRead(ctx->f, ctx->offset, str, try_read, FsReadOption_None, &actually_read));
+            AMS_ASSERT(actually_read == try_read);
+
+            /* Only "read" up to the first \n. */
+            size_t offset = actually_read;
+            for (size_t i = 0; i < actually_read; i++) {
+                if (str[i] == '\n') {
+                    offset = i + 1;
+                    break;
+                }
+            }
+
+            /* Ensure null termination. */
+            str[offset] = '\0';
+
+            /* Update context. */
+            ctx->offset += offset;
+            ctx->num_left -= offset;
+
+            return str;
+        }
+
+    }
+
+    /* Utilities for dealing with INI file configuration. */
+    int ParseString(const char *ini_str, void *user_ctx, Handler h) {
+        return ini_parse_string(ini_str, h, user_ctx);
+    }
+
+    int ParseFile(FILE *f, void *user_ctx, Handler h) {
+        return ini_parse_file(f, h, user_ctx);
+    }
+
+    int ParseFile(FsFile *f, void *user_ctx, Handler h) {
+        FsFileContext ctx(f);
+        return ini_parse_stream(ini_reader_fs_file, &ctx, h, user_ctx);
+    }
+
+    int ParseFile(const char *path, void *user_ctx, Handler h) {
+        return ini_parse(path, h, user_ctx);
+    }
+
+}