Added inih as submodule as well.

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.gitmodules vendored
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[submodule "tools/lgyFbScaler/lodepng"]
path = tools/lgyFbScaler/lodepng
url = https://github.com/lvandeve/lodepng.git
[submodule "libraries/inih"]
path = libraries/inih
url = https://github.com/benhoyt/inih.git

1
libraries/inih Submodule

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Subproject commit 5e1d9e2625842dddb3f9c086a50f22e4f45dfc2b

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The "inih" library is distributed under the New BSD license:
Copyright (c) 2009, Ben Hoyt
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Ben Hoyt nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY BEN HOYT ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL BEN HOYT BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# inih (INI Not Invented Here)
[![TravisCI Build](https://travis-ci.org/benhoyt/inih.svg)](https://travis-ci.org/benhoyt/inih)
**inih (INI Not Invented Here)** is a simple [.INI file](http://en.wikipedia.org/wiki/INI_file) parser written in C. It's only a couple of pages of code, and it was designed to be _small and simple_, so it's good for embedded systems. It's also more or less compatible with Python's [ConfigParser](http://docs.python.org/library/configparser.html) style of .INI files, including RFC 822-style multi-line syntax and `name: value` entries.
To use it, just give `ini_parse()` an INI file, and it will call a callback for every `name=value` pair parsed, giving you strings for the section, name, and value. It's done this way ("SAX style") because it works well on low-memory embedded systems, but also because it makes for a KISS implementation.
You can also call `ini_parse_file()` to parse directly from a `FILE*` object, `ini_parse_string()` to parse data from a string, or `ini_parse_stream()` to parse using a custom fgets-style reader function for custom I/O.
Download a release, browse the source, or read about [how to use inih in a DRY style](http://blog.brush.co.nz/2009/08/xmacros/) with X-Macros.
## Compile-time options ##
You can control various aspects of inih using preprocessor defines:
### Syntax options ###
* **Multi-line entries:** By default, inih supports multi-line entries in the style of Python's ConfigParser. To disable, add `-DINI_ALLOW_MULTILINE=0`.
* **UTF-8 BOM:** By default, inih allows a UTF-8 BOM sequence (0xEF 0xBB 0xBF) at the start of INI files. To disable, add `-DINI_ALLOW_BOM=0`.
* **Inline comments:** By default, inih allows inline comments with the `;` character. To disable, add `-DINI_ALLOW_INLINE_COMMENTS=0`. You can also specify which character(s) start an inline comment using `INI_INLINE_COMMENT_PREFIXES`.
* **Start-of-line comments:** By default, inih allows both `;` and `#` to start a comment at the beginning of a line. You can override this by changing `INI_START_COMMENT_PREFIXES`.
* **Allow no value:** By default, inih treats a name with no value (no `=` or `:` on the line) as an error. To allow names with no values, add `-DINI_ALLOW_NO_VALUE=1`, and inih will call your handler function with value set to NULL.
### Parsing options ###
* **Stop on first error:** By default, inih keeps parsing the rest of the file after an error. To stop parsing on the first error, add `-DINI_STOP_ON_FIRST_ERROR=1`.
* **Report line numbers:** By default, the `ini_handler` callback doesn't receive the line number as a parameter. If you need that, add `-DINI_HANDLER_LINENO=1`.
* **Call handler on new section:** By default, inih only calls the handler on each `name=value` pair. To detect new sections (e.g., the INI file has multiple sections with the same name), add `-DINI_CALL_HANDLER_ON_NEW_SECTION=1`. Your handler function will then be called each time a new section is encountered, with `section` set to the new section name but `name` and `value` set to NULL.
### Memory options ###
* **Stack vs heap:** By default, inih creates a fixed-sized line buffer on the stack. To allocate on the heap using `malloc` instead, specify `-DINI_USE_STACK=0`.
* **Maximum line length:** The default maximum line length (for stack or heap) is 200 bytes. To override this, add something like `-DINI_MAX_LINE=1000`. Note that `INI_MAX_LINE` must be 3 more than the longest line (due to `\r`, `\n`, and the NUL).
* **Initial malloc size:** `INI_INITIAL_ALLOC` specifies the initial malloc size when using the heap. It defaults to 200 bytes.
* **Allow realloc:** By default when using the heap (`-DINI_USE_STACK=0`), inih allocates a fixed-sized buffer of `INI_INITIAL_ALLOC` bytes. To allow this to grow to `INI_MAX_LINE` bytes, doubling if needed, set `-DINI_ALLOW_REALLOC=1`.
* **Custom allocator:** By default when using the heap, the standard library's `malloc`, `free`, and `realloc` functions are used; to use a custom allocator, specify `-DINI_CUSTOM_ALLOCATOR=1` (and `-DINI_USE_STACK=0`). You must define and link functions named `ini_malloc`, `ini_free`, and (if `INI_ALLOW_REALLOC` is set) `ini_realloc`, which must have the same signatures as the `stdlib.h` memory allocation functions.
## Simple example in C ##
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../ini.h"
typedef struct
{
int version;
const char* name;
const char* email;
} configuration;
static int handler(void* user, const char* section, const char* name,
const char* value)
{
configuration* pconfig = (configuration*)user;
#define MATCH(s, n) strcmp(section, s) == 0 && strcmp(name, n) == 0
if (MATCH("protocol", "version")) {
pconfig->version = atoi(value);
} else if (MATCH("user", "name")) {
pconfig->name = strdup(value);
} else if (MATCH("user", "email")) {
pconfig->email = strdup(value);
} else {
return 0; /* unknown section/name, error */
}
return 1;
}
int main(int argc, char* argv[])
{
configuration config;
if (ini_parse("test.ini", handler, &config) < 0) {
printf("Can't load 'test.ini'\n");
return 1;
}
printf("Config loaded from 'test.ini': version=%d, name=%s, email=%s\n",
config.version, config.name, config.email);
return 0;
}
```
## C++ example ##
If you're into C++ and the STL, there is also an easy-to-use [INIReader class](https://github.com/benhoyt/inih/blob/master/cpp/INIReader.h) that stores values in a `map` and lets you `Get()` them:
```cpp
#include <iostream>
#include "INIReader.h"
int main()
{
INIReader reader("../examples/test.ini");
if (reader.ParseError() < 0) {
std::cout << "Can't load 'test.ini'\n";
return 1;
}
std::cout << "Config loaded from 'test.ini': version="
<< reader.GetInteger("protocol", "version", -1) << ", name="
<< reader.Get("user", "name", "UNKNOWN") << ", email="
<< reader.Get("user", "email", "UNKNOWN") << ", pi="
<< reader.GetReal("user", "pi", -1) << ", active="
<< reader.GetBoolean("user", "active", true) << "\n";
return 0;
}
```
This simple C++ API works fine, but it's not very fully-fledged. I'm not planning to work more on the C++ API at the moment, so if you want a bit more power (for example `GetSections()` and `GetFields()` functions), see these forks:
* https://github.com/Blandinium/inih
* https://github.com/OSSystems/inih
## Differences from ConfigParser ##
Some differences between inih and Python's [ConfigParser](http://docs.python.org/library/configparser.html) standard library module:
* INI name=value pairs given above any section headers are treated as valid items with no section (section name is an empty string). In ConfigParser having no section is an error.
* Line continuations are handled with leading whitespace on continued lines (like ConfigParser). However, instead of concatenating continued lines together, they are treated as separate values for the same key (unlike ConfigParser).
## Platform-specific notes ##
* Windows/Win32 uses UTF-16 filenames natively, so to handle Unicode paths you need to call `_wfopen()` to open a file and then `ini_parse_file()` to parse it; inih does not include `wchar_t` or Unicode handling.
## Meson notes ##
* The `meson.build` file is not required to use or compile inih, its main purpose is for distributions.
* By default Meson only creates a static library for inih, but Meson can be used to configure this behavior:
* with `-Ddefault_library=shared` a shared library is build.
* with `-Ddistro_install=true` the library will be installed with the header and a pkg-config entry, you may want to set `-Ddefault_library=shared` when using this.
* with `-Dwith_INIReader` you can build (and install if selected) the C++ library.
* all compile-time options are implemented in Meson as well, you can take a look at [meson_options.txt](https://github.com/benhoyt/inih/blob/master/meson_options.txt) for their definition. These won't work if `distro_install` is set to `true`.
* If you want to use inih for programs which may be shipped in a distro, consider linking against the shared libraries. The pkg-config entries are `inih` and `INIReader`.
* In case you use inih as a subproject, you can use the `inih_dep` and `INIReader_dep` dependency variables.
## Building from vcpkg ##
You can build and install inih using [vcpkg](https://github.com/microsoft/vcpkg/) dependency manager:
git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
./bootstrap-vcpkg.sh
./vcpkg integrate install
./vcpkg install inih
The inih port in vcpkg is kept up to date by microsoft team members and community contributors.
If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
## Related links ##
* [Conan package for inih](https://github.com/mohamedghita/conan-inih) (Conan is a C/C++ package manager)

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/* inih -- simple .INI file parser
SPDX-License-Identifier: BSD-3-Clause
Copyright (C) 2009-2020, Ben Hoyt
inih is released under the New BSD license (see LICENSE.txt). Go to the project
home page for more info:
https://github.com/benhoyt/inih
*/
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include "ini.h"
#if !INI_USE_STACK
#if INI_CUSTOM_ALLOCATOR
#include <stddef.h>
void* ini_malloc(size_t size);
void ini_free(void* ptr);
void* ini_realloc(void* ptr, size_t size);
#else
#include <stdlib.h>
#define ini_malloc malloc
#define ini_free free
#define ini_realloc realloc
#endif
#endif
#define MAX_SECTION 50
#define MAX_NAME 50
/* Used by ini_parse_string() to keep track of string parsing state. */
typedef struct {
const char* ptr;
size_t num_left;
} ini_parse_string_ctx;
/* Strip whitespace chars off end of given string, in place. Return s. */
static char* rstrip(char* s)
{
char* p = s + strlen(s);
while (p > s && isspace((unsigned char)(*--p)))
*p = '\0';
return s;
}
/* Return pointer to first non-whitespace char in given string. */
static char* lskip(const char* s)
{
while (*s && isspace((unsigned char)(*s)))
s++;
return (char*)s;
}
/* Return pointer to first char (of chars) or inline comment in given string,
or pointer to NUL at end of string if neither found. Inline comment must
be prefixed by a whitespace character to register as a comment. */
static char* find_chars_or_comment(const char* s, const char* chars)
{
#if INI_ALLOW_INLINE_COMMENTS
int was_space = 0;
while (*s && (!chars || !strchr(chars, *s)) &&
!(was_space && strchr(INI_INLINE_COMMENT_PREFIXES, *s))) {
was_space = isspace((unsigned char)(*s));
s++;
}
#else
while (*s && (!chars || !strchr(chars, *s))) {
s++;
}
#endif
return (char*)s;
}
/* Similar to strncpy, but ensures dest (size bytes) is
NUL-terminated, and doesn't pad with NULs. */
static char* strncpy0(char* dest, const char* src, size_t size)
{
/* Could use strncpy internally, but it causes gcc warnings (see issue #91) */
size_t i;
for (i = 0; i < size - 1 && src[i]; i++)
dest[i] = src[i];
dest[i] = '\0';
return dest;
}
/* See documentation in header file. */
int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
void* user)
{
/* Uses a fair bit of stack (use heap instead if you need to) */
#if INI_USE_STACK
char line[INI_MAX_LINE];
int max_line = INI_MAX_LINE;
#else
char* line;
size_t max_line = INI_INITIAL_ALLOC;
#endif
#if INI_ALLOW_REALLOC && !INI_USE_STACK
char* new_line;
size_t offset;
#endif
char section[MAX_SECTION] = "";
char prev_name[MAX_NAME] = "";
char* start;
char* end;
char* name;
char* value;
int lineno = 0;
int error = 0;
#if !INI_USE_STACK
line = (char*)ini_malloc(INI_INITIAL_ALLOC);
if (!line) {
return -2;
}
#endif
#if INI_HANDLER_LINENO
#define HANDLER(u, s, n, v) handler(u, s, n, v, lineno)
#else
#define HANDLER(u, s, n, v) handler(u, s, n, v)
#endif
/* Scan through stream line by line */
while (reader(line, (int)max_line, stream) != NULL) {
#if INI_ALLOW_REALLOC && !INI_USE_STACK
offset = strlen(line);
while (offset == max_line - 1 && line[offset - 1] != '\n') {
max_line *= 2;
if (max_line > INI_MAX_LINE)
max_line = INI_MAX_LINE;
new_line = ini_realloc(line, max_line);
if (!new_line) {
ini_free(line);
return -2;
}
line = new_line;
if (reader(line + offset, (int)(max_line - offset), stream) == NULL)
break;
if (max_line >= INI_MAX_LINE)
break;
offset += strlen(line + offset);
}
#endif
lineno++;
start = line;
#if INI_ALLOW_BOM
if (lineno == 1 && (unsigned char)start[0] == 0xEF &&
(unsigned char)start[1] == 0xBB &&
(unsigned char)start[2] == 0xBF) {
start += 3;
}
#endif
start = lskip(rstrip(start));
if (strchr(INI_START_COMMENT_PREFIXES, *start)) {
/* Start-of-line comment */
}
#if INI_ALLOW_MULTILINE
else if (*prev_name && *start && start > line) {
/* Non-blank line with leading whitespace, treat as continuation
of previous name's value (as per Python configparser). */
if (!HANDLER(user, section, prev_name, start) && !error)
error = lineno;
}
#endif
else if (*start == '[') {
/* A "[section]" line */
end = find_chars_or_comment(start + 1, "]");
if (*end == ']') {
*end = '\0';
strncpy0(section, start + 1, sizeof(section));
*prev_name = '\0';
#if INI_CALL_HANDLER_ON_NEW_SECTION
if (!HANDLER(user, section, NULL, NULL) && !error)
error = lineno;
#endif
}
else if (!error) {
/* No ']' found on section line */
error = lineno;
}
}
else if (*start) {
/* Not a comment, must be a name[=:]value pair */
end = find_chars_or_comment(start, "=:");
if (*end == '=' || *end == ':') {
*end = '\0';
name = rstrip(start);
value = end + 1;
#if INI_ALLOW_INLINE_COMMENTS
end = find_chars_or_comment(value, NULL);
if (*end)
*end = '\0';
#endif
value = lskip(value);
rstrip(value);
/* Valid name[=:]value pair found, call handler */
strncpy0(prev_name, name, sizeof(prev_name));
if (!HANDLER(user, section, name, value) && !error)
error = lineno;
}
else if (!error) {
/* No '=' or ':' found on name[=:]value line */
#if INI_ALLOW_NO_VALUE
*end = '\0';
name = rstrip(start);
if (!HANDLER(user, section, name, NULL) && !error)
error = lineno;
#else
error = lineno;
#endif
}
}
#if INI_STOP_ON_FIRST_ERROR
if (error)
break;
#endif
}
#if !INI_USE_STACK
ini_free(line);
#endif
return error;
}
/* See documentation in header file. */
int ini_parse_file(FILE* file, ini_handler handler, void* user)
{
return ini_parse_stream((ini_reader)fgets, file, handler, user);
}
/* See documentation in header file. */
int ini_parse(const char* filename, ini_handler handler, void* user)
{
FILE* file;
int error;
file = fopen(filename, "r");
if (!file)
return -1;
error = ini_parse_file(file, handler, user);
fclose(file);
return error;
}
/* An ini_reader function to read the next line from a string buffer. This
is the fgets() equivalent used by ini_parse_string(). */
static char* ini_reader_string(char* str, int num, void* stream) {
ini_parse_string_ctx* ctx = (ini_parse_string_ctx*)stream;
const char* ctx_ptr = ctx->ptr;
size_t ctx_num_left = ctx->num_left;
char* strp = str;
char c;
if (ctx_num_left == 0 || num < 2)
return NULL;
while (num > 1 && ctx_num_left != 0) {
c = *ctx_ptr++;
ctx_num_left--;
*strp++ = c;
if (c == '\n')
break;
num--;
}
*strp = '\0';
ctx->ptr = ctx_ptr;
ctx->num_left = ctx_num_left;
return str;
}
/* See documentation in header file. */
int ini_parse_string(const char* string, ini_handler handler, void* user) {
ini_parse_string_ctx ctx;
ctx.ptr = string;
ctx.num_left = strlen(string);
return ini_parse_stream((ini_reader)ini_reader_string, &ctx, handler,
user);
}

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/* inih -- simple .INI file parser
SPDX-License-Identifier: BSD-3-Clause
Copyright (C) 2009-2020, Ben Hoyt
inih is released under the New BSD license (see LICENSE.txt). Go to the project
home page for more info:
https://github.com/benhoyt/inih
*/
#ifndef INI_H
#define INI_H
/* Make this header file easier to include in C++ code */
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
/* Nonzero if ini_handler callback should accept lineno parameter. */
#ifndef INI_HANDLER_LINENO
#define INI_HANDLER_LINENO 0
#endif
/* Typedef for prototype of handler function. */
#if INI_HANDLER_LINENO
typedef int (*ini_handler)(void* user, const char* section,
const char* name, const char* value,
int lineno);
#else
typedef int (*ini_handler)(void* user, const char* section,
const char* name, const char* value);
#endif
/* Typedef for prototype of fgets-style reader function. */
typedef char* (*ini_reader)(char* str, int num, void* stream);
/* Parse given INI-style file. May have [section]s, name=value pairs
(whitespace stripped), and comments starting with ';' (semicolon). Section
is "" if name=value pair parsed before any section heading. name:value
pairs are also supported as a concession to Python's configparser.
For each name=value pair parsed, call handler function with given user
pointer as well as section, name, and value (data only valid for duration
of handler call). Handler should return nonzero on success, zero on error.
Returns 0 on success, line number of first error on parse error (doesn't
stop on first error), -1 on file open error, or -2 on memory allocation
error (only when INI_USE_STACK is zero).
*/
int ini_parse(const char* filename, ini_handler handler, void* user);
/* Same as ini_parse(), but takes a FILE* instead of filename. This doesn't
close the file when it's finished -- the caller must do that. */
int ini_parse_file(FILE* file, ini_handler handler, void* user);
/* Same as ini_parse(), but takes an ini_reader function pointer instead of
filename. Used for implementing custom or string-based I/O (see also
ini_parse_string). */
int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
void* user);
/* Same as ini_parse(), but takes a zero-terminated string with the INI data
instead of a file. Useful for parsing INI data from a network socket or
already in memory. */
int ini_parse_string(const char* string, ini_handler handler, void* user);
/* Nonzero to allow multi-line value parsing, in the style of Python's
configparser. If allowed, ini_parse() will call the handler with the same
name for each subsequent line parsed. */
#ifndef INI_ALLOW_MULTILINE
#define INI_ALLOW_MULTILINE 1
#endif
/* Nonzero to allow a UTF-8 BOM sequence (0xEF 0xBB 0xBF) at the start of
the file. See https://github.com/benhoyt/inih/issues/21 */
#ifndef INI_ALLOW_BOM
#define INI_ALLOW_BOM 1
#endif
/* Chars that begin a start-of-line comment. Per Python configparser, allow
both ; and # comments at the start of a line by default. */
#ifndef INI_START_COMMENT_PREFIXES
#define INI_START_COMMENT_PREFIXES ";#"
#endif
/* Nonzero to allow inline comments (with valid inline comment characters
specified by INI_INLINE_COMMENT_PREFIXES). Set to 0 to turn off and match
Python 3.2+ configparser behaviour. */
#ifndef INI_ALLOW_INLINE_COMMENTS
#define INI_ALLOW_INLINE_COMMENTS 1
#endif
#ifndef INI_INLINE_COMMENT_PREFIXES
#define INI_INLINE_COMMENT_PREFIXES ";"
#endif
/* Nonzero to use stack for line buffer, zero to use heap (malloc/free). */
#ifndef INI_USE_STACK
#define INI_USE_STACK 1
#endif
/* Maximum line length for any line in INI file (stack or heap). Note that
this must be 3 more than the longest line (due to '\r', '\n', and '\0'). */
#ifndef INI_MAX_LINE
#define INI_MAX_LINE 200
#endif
/* Nonzero to allow heap line buffer to grow via realloc(), zero for a
fixed-size buffer of INI_MAX_LINE bytes. Only applies if INI_USE_STACK is
zero. */
#ifndef INI_ALLOW_REALLOC
#define INI_ALLOW_REALLOC 0
#endif
/* Initial size in bytes for heap line buffer. Only applies if INI_USE_STACK
is zero. */
#ifndef INI_INITIAL_ALLOC
#define INI_INITIAL_ALLOC 200
#endif
/* Stop parsing on first error (default is to keep parsing). */
#ifndef INI_STOP_ON_FIRST_ERROR
#define INI_STOP_ON_FIRST_ERROR 0
#endif
/* Nonzero to call the handler at the start of each new section (with
name and value NULL). Default is to only call the handler on
each name=value pair. */
#ifndef INI_CALL_HANDLER_ON_NEW_SECTION
#define INI_CALL_HANDLER_ON_NEW_SECTION 0
#endif
/* Nonzero to allow a name without a value (no '=' or ':' on the line) and
call the handler with value NULL in this case. Default is to treat
no-value lines as an error. */
#ifndef INI_ALLOW_NO_VALUE
#define INI_ALLOW_NO_VALUE 0
#endif
/* Nonzero to use custom ini_malloc, ini_free, and ini_realloc memory
allocation functions (INI_USE_STACK must also be 0). These functions must
have the same signatures as malloc/free/realloc and behave in a similar
way. ini_realloc is only needed if INI_ALLOW_REALLOC is set. */
#ifndef INI_CUSTOM_ALLOCATOR
#define INI_CUSTOM_ALLOCATOR 0
#endif
#ifdef __cplusplus
}
#endif
#endif /* INI_H */