Atmosphere/stratosphere/libstratosphere/source/util/util_ini.cpp
Michael Scire f534d3498e git subrepo clone https://github.com/Atmosphere-NX/libstratosphere stratosphere/libstratosphere
subrepo:
  subdir:   "stratosphere/libstratosphere"
  merged:   "0c5dab80"
upstream:
  origin:   "https://github.com/Atmosphere-NX/libstratosphere"
  branch:   "master"
  commit:   "0c5dab80"
git-subrepo:
  version:  "0.4.0"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "5d6aba9"
2019-07-17 20:04:00 -07:00

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2.9 KiB
C++

/*
* 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 <switch.h>
#include <stratosphere.hpp>
#include <stratosphere/util.hpp>
#include "ini.h"
namespace sts::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) {
u64 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, FS_READOPTION_NONE, &actually_read));
if (actually_read != try_read) {
std::abort();
}
/* 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);
}
}