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CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 3.17)
include_directories(${CMAKE_CURRENT_SOURCE_DIR})
include_directories(${CMAKE_CURRENT_BINARY_DIR})
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}")
include(CheckSymbolExists)
include(TestStrerrorR)
if (WIN32)
check_symbol_exists(_access_s io.h HAVE__ACCESS_S)
check_symbol_exists(_waccess_s io.h HAVE__WACCESS_S)
check_symbol_exists(strerror_s "string.h" HAVE_STRERROR_S)
check_symbol_exists(_wcserror_s "string.h" HAVE__WCSERROR_S)
check_symbol_exists(printf_s "stdio.h" HAVE_PRINTF_S)
check_symbol_exists(sscanf_s "stdio.h" HAVE_SSCANF_S)
endif()
check_symbol_exists(strerror_r "string.h" HAVE_STRERROR_R)
if (HAVE_STRERROR_R)
test_strerror_r(HAVE_GNU_STRERROR_R)
endif()
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/utils_config.h.in" "${CMAKE_CURRENT_BINARY_DIR}/utils_config.h")
if (${CMAKE_C_COMPILER_ID} STREQUAL GNU)
add_compile_options(-fPIC)
endif()
set(SOURCE_FILE
cfileop.cpp
cpp2c.cpp
cstr_util.c
err.cpp
fileop.cpp
wchar_util.cpp
memfile.c
cmath.c
)
set(SOURCE_FILE_HEADERS
cfileop.h
cpp2c.h
cstr_util.h
err.h
fileop.h
list_pointer.h
wchar_util.h
memfile.h
cmath.h
)
add_library(utils STATIC ${SOURCE_FILE} ${SOURCE_FILE_HEADERS})
target_compile_definitions(utils PRIVATE HAVE_UTILS_CONFIG_H)

661
LICENSE Normal file
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to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

12
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function(test_strerror_r OUTPUT_VAR)
if (DEFINED STRERROR_R_TEST_RESULT_CACHE)
set(${OUTPUT_VAR} ${STRERROR_R_TEST_RESULT_CACHE} PARENT_SCOPE)
message(STATUS "Check strerror_r is GNU complatable - ${STRERROR_R_TEST_RESULT_CACHE} (Cached)")
else()
message(STATUS "Check strerror_r is GNU complatable")
try_compile(STRERROR_R_TEST_RESULT "${CMAKE_CURRENT_BINARY_DIR}" "${CMAKE_CURRENT_FUNCTION_LIST_DIR}/test_strerror_r.c")
set(STRERROR_R_TEST_RESULT_CACHE ${STRERROR_R_TEST_RESULT} CACHE BOOL "Is strerror_r is GNU complatable.")
set(${OUTPUT_VAR} ${STRERROR_R_TEST_RESULT} PARENT_SCOPE)
message(STATUS "Check strerror_r is GNU complatable - ${STRERROR_R_TEST_RESULT}")
endif()
endfunction()

41
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#include "cfileop.h"
#include "fileop.h"
#include "cpp2c.h"
int fileop_exists(const char* fn) {
if (!fn) return 0;
return fileop::exists(fn) ? 1 : 0;
}
int fileop_remove(const char* fn) {
if (!fn) return 0;
return fileop::remove(fn) ? 1 : 0;
}
char* fileop_dirname(const char* fn) {
if (!fn) return nullptr;
auto re = fileop::dirname(fn);
char* tmp = nullptr;
return cpp2c::string2char(re, tmp) ? tmp : nullptr;
}
int fileop_is_url(const char* fn, int* re) {
if (!fn || !re) return 0;
*re = fileop::is_url(fn) ? 1 : 0;
return 1;
}
char* fileop_basename(const char* fn) {
if (!fn) return nullptr;
auto re = fileop::basename(fn);
char* tmp = nullptr;
return cpp2c::string2char(re, tmp) ? tmp : nullptr;
}
int fileop_parse_size(const char* size, size_t* fs, int is_byte) {
if (!size || !fs) return 0;
size_t tmp;
auto re = fileop::parse_size(size, tmp, is_byte);
if (re) *fs = tmp;
return re ? 1 : 0;
}

49
cfileop.h Normal file
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#ifndef _UTIL_CFILEOP_H
#define _UTIL_CFILEOP_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h>
/**
* @brief Check file exists
* @param fn File name
* @returns 1 if file is exists otherwise 0
*/
int fileop_exists(const char* fn);
/**
* @brief Remove file
* @param fn File name
* @returns 1 if successed otherwise 0
*/
int fileop_remove(const char* fn);
/**
* @brief Get directory name from path
* @param fn Path
* @returns Directory. If path does not contain a slash, will return "". Need free memory by using free.
*/
char* fileop_dirname(const char* fn);
/**
* @brief Detect if path is a url.
* @param fn Path
* @param re result
* @return 1 if successed otherwise 0
*/
int fileop_is_url(const char* fn, int* re);
/**
* @brief Get file name from path
* @param fn Path
* @return File name. Need free memory by calling free.
*/
char* fileop_basename(const char* fn);
/**
* @brief Parse size string
* @param size Such as "10KiB", "10", "34B", "48K"
* @param fs size
* @param is_byte Whether to return bits or bytes
* @return 1 if successed otherwise 0
*/
int fileop_parse_size(const char* size, size_t* fs, int is_byte);
#ifdef __cplusplus
}
#endif
#endif

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#include "cmath.h"
int GCD(int a, int b) {
if (b) while ((a %= b) && (b %= a));
return a + b;
}

10
cmath.h Normal file
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#ifndef _UTIL_CMATH_H
#define _UTIL_CMATH_H
#ifdef __cplusplus
extern "C" {
#endif
int GCD(int a, int b);
#ifdef __cplusplus
}
#endif
#endif

26
cpp2c.cpp Normal file
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#if HAVE_UTILS_CONFIG_H
#include "utils_config.h"
#endif
#include "cpp2c.h"
#include <string.h>
#include <malloc.h>
#include <stdio.h>
#if HAVE_PRINTF_S
#define printf printf_s
#endif
bool cpp2c::string2char(std::string inp, char*& out) {
size_t le = inp.length();
char* temp = (char*)malloc(le + 1);
if (!temp) {
printf("Out of memory.\n");
return false;
}
memcpy(temp, inp.c_str(), le);
temp[le] = 0;
out = temp;
return true;
}

16
cpp2c.h Normal file
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#ifndef _UTILS_CPP2C_H
#define _UTILS_CPP2C_H
#include <string>
namespace cpp2c {
/**
* @brief Convert string to char*
* @param inp Input string.
* @param out The pointer to output buffer. Need free memory by using free.
* @return true if succeeded.
*/
bool string2char(std::string inp, char*& out);
}
#endif

17
cstr_util.c Normal file
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#include "cstr_util.h"
#include <malloc.h>
#include <string.h>
int cstr_util_copy_str(char** dest, const char* str) {
if (!dest || !str) return 1;
size_t le = strlen(str);
char* temp = malloc(le + 1);
if (!temp) {
return 2;
}
memcpy(temp, str, le);
temp[le] = 0;
*dest = temp;
return 0;
}

16
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#ifndef _UTILS_CSTR_UTIL_H
#define _UTILS_CSTR_UTIL_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Copy string to another string
* @param dest The pointer of output string
* @param str The input string
* @return 0 if successed. `1` - args contains NULL. `2` - Out of memory.
*/
int cstr_util_copy_str(char** dest, const char* str);
#ifdef __cplusplus
}
#endif
#endif

62
err.cpp Normal file
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#if HAVE_UTILS_CONFIG_H
#include "utils_config.h"
#endif
#include "err.h"
#include "wchar_util.h"
#include <string.h>
#if _WIN32
#include "Windows.h"
#endif
bool err::get_errno_message(std::string &out, int errnum) {
#if _WIN32
#if HAVE__WCSERROR_S
wchar_t buf[512];
if(!_wcserror_s(buf, errnum)) {
std::wstring ws(buf);
if(wchar_util::wstr_to_str(out, ws, CP_UTF8)) return true;
}
#else
wchar_t* buf = _wcserror(errnum);
if (buf != nullptr) {
std::wstring ws(buf);
if(wchar_util::wstr_to_str(out, ws, CP_UTF8)) return true;
}
#endif
#if HAVE_STRERROR_S
char nbuf[1024];
if (!strerror_s(nbuf, errnum)) {
out = nbuf;
return true;
}
#else
char* nbuf = strerror(errnum);
if (nbuf != nullptr) {
out = nbuf;
return true;
}
#endif
return false;
#else
#if HAVE_GNU_STRERROR_R
char buf[1024];
char* re = strerror_r(errnum, buf, 1024);
out = re;
return true;
#else
#if HAVE_STRERROR_R
char buf[1024];
if (!strerror_r(errnum, buf, 1024)) {
out = buf;
return true;
}
#endif
char *ret = strerror(errnum);
if (ret != nullptr) {
out = ret;
}
return ret != nullptr;
#endif
#endif
}

14
err.h Normal file
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#ifndef _UTILS_ERR_H
#define _UTILS_ERR_H
#include <string>
namespace err {
/**
* @brief Get error message from errno
* @param out Output string
* @param errnum errno
* @returns true if successed
*/
bool get_errno_message(std::string &out, int errnum);
}
#endif

178
fileop.cpp Normal file
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#if HAVE_UTILS_CONFIG_H
#include "utils_config.h"
#endif
#include "fileop.h"
#ifdef _WIN32
#include <Windows.h>
#include <io.h>
#else
#include <unistd.h>
#endif
#include "err.h"
#include "wchar_util.h"
#include <regex>
#ifdef _WIN32
#if HAVE__ACCESS_S
#define access _access_s
#endif
#if HAVE__WACCESS_S
#define _waccess _waccess_s
#endif
#if HAVE_PRINTF_S
#define printf printf_s
#endif
#if HAVE_SSCANF_S
#define sscanf sscanf_s
#endif
#endif
#ifdef _WIN32
bool exists_internal(wchar_t* fn) {
return !_waccess(fn, 0);
}
bool remove_internal(wchar_t* fn, bool print_error) {
int ret = _wremove(fn);
if (ret && print_error && errno != ENOENT) {
std::string o;
std::string tfn;
if (err::get_errno_message(o, errno) && wchar_util::wstr_to_str(tfn, fn, CP_UTF8)) {
printf("Can not remove file \"%s\": %s.\n", tfn.c_str(), o.c_str());
}
}
return !ret;
}
template <typename T, typename ... Args>
T fileop_internal(const char* fname, UINT codePage, T(*callback)(wchar_t* fn, Args... args), T failed, Args... args) {
int wlen;
wchar_t* fn;
DWORD opt = wchar_util::getMultiByteToWideCharOptions(MB_ERR_INVALID_CHARS, codePage);
wlen = MultiByteToWideChar(codePage, opt, fname, -1, NULL, 0);
if (!wlen) return failed;
fn = (wchar_t*)malloc(sizeof(wchar_t) * wlen);
if (!MultiByteToWideChar(codePage, opt, fname, -1, fn, wlen)) {
free(fn);
return failed;
}
T re = callback(fn, args...);
free(fn);
return re;
}
#endif
bool fileop::exists(std::string fn) {
#if _WIN32
UINT cp[] = { CP_UTF8, CP_OEMCP, CP_ACP };
int i;
for (i = 0; i < 3; i++) {
if (fileop_internal(fn.c_str(), cp[i], &exists_internal, false)) return true;
}
return !access(fn.c_str(), 0);
#else
return !access(fn.c_str(), 0);
#endif
}
bool fileop::remove(std::string fn, bool print_error) {
#if _WIN32
UINT cp[] = { CP_UTF8, CP_OEMCP, CP_ACP };
int i;
for (i = 0; i < 3; i++) {
if (fileop_internal(fn.c_str(), cp[i], &remove_internal, false, print_error)) return true;
}
#endif
int ret = ::remove(fn.c_str());
if (ret && print_error) {
std::string o;
if (err::get_errno_message(o, errno)) {
printf("Can not remove file \"%s\": %s.\n", fn.c_str(), o.c_str());
}
}
return !ret;
}
std::string fileop::dirname(std::string fn) {
auto i = fn.find_last_of('/');
auto i2 = fn.find_last_of('\\');
i = (i == std::string::npos || (i2 != std::string::npos && i2 > i)) ? i2 : i;
return i == std::string::npos ? "" : fn.substr(0, i);
}
bool fileop::is_url(std::string fn) {
return fn.find("://") != std::string::npos;
}
std::string fileop::basename(std::string fn) {
if (!is_url(fn)) {
auto i = fn.find_last_of('/');
auto i2 = fn.find_last_of('\\');
i = (i == std::string::npos || (i2 != std::string::npos && i2 > i)) ? i2 : i;
return i == std::string::npos ? fn : fn.substr(i + 1, fn.length() - i - 1);
} else {
auto iq = fn.find_first_of('?');
auto iq2 = fn.find_first_of('#');
iq = (iq == std::string::npos || (iq2 != std::string::npos && iq2 < iq)) ? iq2 : iq;
auto i = fn.find_last_of('/', iq);
auto i2 = fn.find_last_of('\\', iq);
i = (i == std::string::npos || (i2 != std::string::npos && i2 > i)) ? i2 : i;
if (i == std::string::npos && iq == std::string::npos) {
return fn;
} else if (i == std::string::npos) {
return fn.substr(0, iq);
} else if (iq == std::string::npos) {
return fn.substr(i + 1, fn.length() - i - 1);
} else {
return fn.substr(i + 1, iq - i - 1);
}
}
}
bool fileop::parse_size(std::string size, size_t& fs, bool is_byte) {
const std::regex REG(R"(^(\d+)([kmgtpezy])?(i)?(b)?$)", std::regex::icase);
std::smatch m;
if (!std::regex_search(size, m, REG)) {
return false;
}
auto bs = m[1].str();
size_t base;
if (sscanf(bs.c_str(), "%zu", &base) != 1) {
return false;
}
size_t pow = 0;
if (m[2].matched) {
auto sp = std::tolower(m[2].str()[0]);
if (sp == 'k') pow = 1;
else if (sp == 'm') pow = 2;
else if (sp == 'g') pow = 3;
else if (sp == 't') pow = 4;
else if (sp == 'p') pow = 5;
else if (sp == 'e') pow = 6;
else if (sp == 'z') pow = 7;
else if (sp == 'y') pow = 8;
}
if (m[3].matched) {
pow = 1ull << (pow * 10);
} else {
size_t tmp = 1;
while (pow > 0) {
tmp *= 1000ull;
pow--;
}
pow = tmp;
}
if (m[4].matched) {
auto b = m[4].str();
if (b == "b") {
fs = is_byte ? base * pow / 8ull : base * pow;
} else {
fs = is_byte ? base * pow : base * pow * 8ull;
}
} else {
fs = base * pow;
}
return true;
}

46
fileop.h Normal file
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#ifndef _UTIL_FILEOP_H
#define _UTIL_FILEOP_H
#include <string>
namespace fileop {
/**
* @brief Check file exists
* @param fn File name
* @returns Whether file exists or not
*/
bool exists(std::string fn);
/**
* @brief Remove file
* @param fn File name
* @param print_error Print error message
* @returns true if successed
*/
bool remove(std::string fn, bool print_error = false);
/**
* @brief Get directory name from path
* @param fn Path
* @returns Directory. If path does not contain a slash, will return "".
*/
std::string dirname(std::string fn);
/**
* @brief Detect if path is a url.
* @param fn Path
* @return true if is a url.
*/
bool is_url(std::string fn);
/**
* @brief Get file name from path
* @param fn Path
* @return File name.
*/
std::string basename(std::string fn);
/**
* @brief Parse size string
* @param size size string. Such as "10KiB", "10", "34B", "48K"
* @param fs size
* @param is_byte Whether to return bits or bytes
* @return true if successed.
*/
bool parse_size(std::string size, size_t& fs, bool is_byte = true);
}
#endif

44
list_pointer.h Normal file
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#ifndef _UTIL_LIST_POINTER_H
#define _UTIL_LIST_POINTER_H
#include <list>
#include <malloc.h>
template <typename T, typename R>
bool listToPointer(std::list<T> li, R*& result, bool (*convert)(T input, R& output), void (*free)(R input)) {
if (!convert) return false;
auto sz = li.size();
if (sz <= 0) return false;
R* r = (R*)malloc(sz * sizeof(void*));
if (!r) {
return false;
}
size_t j = 0;
for (auto i = li.begin(); i != li.end(); ++i) {
auto s = *i;
R t;
if (!convert(s, t)) {
if (!free) {
for (size_t z = 0; z < j; z++) {
free(r[z]);
}
}
::free(r);
return false;
}
r[j] = t;
j++;
}
result = r;
return true;
}
template <typename T>
void freePointerList(T* li, size_t count, void (*free)(T)) {
if (!li) return;
for (size_t i = 0; i < count; i++) {
if (!free) ::free(li[i]);
else free(li[i]);
}
::free(li);
}
#endif

53
memfile.c Normal file
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#include "memfile.h"
#include <malloc.h>
#include <string.h>
#include <errno.h>
#ifndef min
#define min(x, y) (((x) < (y)) ? (x) : (y))
#endif
MemFile* new_memfile(const char* data, size_t len) {
if (!data || !len) return NULL;
MemFile* f = malloc(sizeof(MemFile));
if (!f) return NULL;
memset(f, 0, sizeof(MemFile));
f->data = malloc(len);
if (!f->data) {
free(f);
return NULL;
}
memcpy(f->data, data, len);
f->len = len;
f->loc = 0;
return f;
}
void free_memfile(MemFile* f) {
if (!f) return;
if (f->data) {
free(f->data);
}
free(f);
}
size_t memfile_read(MemFile* f, char* buf, size_t buf_len) {
if (!f || !buf) return (size_t)-1;
if (!buf_len || f->loc >= f->len) return 0;
size_t le = min(buf_len, f->len - f->loc);
memcpy(buf, f->data + f->loc, le);
f->loc += le;
return le;
}
#define MKTAG(a,b,c,d) ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))
#define FFERRTAG(a, b, c, d) (-(int)MKTAG(a, b, c, d))
#define AVERROR_EOF FFERRTAG( 'E','O','F',' ')
#define AVERROR(e) (-(e))
int memfile_readpacket(void* f, uint8_t* buf, int buf_size) {
size_t ret = memfile_read((MemFile*)f, (char*)buf, buf_size);
if (ret == 0) return AVERROR(EINVAL);
else if (ret == (size_t)-1) return -1;
else return ret;
}

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#ifndef _UTIL_MEMFILE_H
#define _UTIL_MEMFILE_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h>
#include <stdint.h>
typedef struct MemFile {
char* data;
size_t len;
size_t loc;
} MemFile;
/**
* @brief Create a new memory file
* @param data Data. Will allocate new memory for this data.
* @param len The size of data.
* @return MemFile struct if succeessed otherwise NULL.
*/
MemFile* new_memfile(const char* data, size_t len);
void free_memfile(MemFile* f);
size_t memfile_read(MemFile* f, char* buf, size_t buf_len);
int memfile_readpacket(void* f, uint8_t* buf, int buf_size);
#ifdef __cplusplus
}
#endif
#endif

8
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#include <string.h>
int main() {
char buf[280];
char* s = strerror_r(ENOENT, buf, 280);
printf("%s", s);
return 0;
}

9
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#pragma once
#cmakedefine HAVE__ACCESS_S @HAVE__ACCESS_S@
#cmakedefine HAVE__WACCESS_S @HAVE__WACCESS_S@
#cmakedefine HAVE_STRERROR_S @HAVE_STRERROR_S@
#cmakedefine HAVE__WCSERROR_S @HAVE__WCSERROR_S@
#cmakedefine HAVE_PRINTF_S @HAVE_PRINTF_S@
#cmakedefine HAVE_STRERROR_R @HAVE_STRERROR_R@
#cmakedefine HAVE_GNU_STRERROR_R @HAVE_GNU_STRERROR_R@
#cmakedefine HAVE_SSCANF_S @HAVE_SSCANF_S@

157
wchar_util.cpp Normal file
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#include "wchar_util.h"
#include "list_pointer.h"
#include <malloc.h>
#include <string.h>
#if _WIN32
#include <Windows.h>
#endif
bool stringToChar(std::string input, char*& output) {
auto sz = input.size();
auto s = (char*)malloc(sz + 1);
if (!s) {
return false;
}
memcpy(s, input.c_str(), sz);
s[sz] = 0;
output = s;
return true;
}
void freeChar(char* input) {
if (input) free(input);
}
#if _WIN32
unsigned long wchar_util::getMultiByteToWideCharOptions(const unsigned long ori_options, unsigned int cp) {
if (cp == CP_ACP) cp = GetACP();
if (cp == CP_OEMCP) cp = GetOEMCP();
switch (cp)
{
case 50220:
case 50221:
case 50222:
case 50225:
case 50227:
case 50229:
case CP_UTF7:
case 42:
return 0;
default:
break;
}
if (cp >= 57002 && cp <= 57011) return 0;
if (cp == CP_UTF8 || cp == 54936) {
return MB_ERR_INVALID_CHARS & ori_options;
}
return ori_options;
}
unsigned long wchar_util::getWideCharToMultiByteOptions(const unsigned long ori_options, unsigned int cp) {
if (cp == CP_ACP) cp = GetACP();
if (cp == CP_OEMCP) cp = GetOEMCP();
switch (cp)
{
case 50220:
case 50221:
case 50222:
case 50225:
case 50227:
case 50229:
case CP_UTF7:
case 42:
return 0;
default:
break;
}
if (cp >= 57002 && cp <= 57011) return 0;
if (cp == CP_UTF8 || cp == 54936) {
return WC_ERR_INVALID_CHARS & ori_options;
}
return ori_options;
}
bool wchar_util::str_to_wstr(std::wstring& out, std::string inp, unsigned int cp) {
DWORD opt = getMultiByteToWideCharOptions(MB_ERR_INVALID_CHARS, cp);
int wlen = MultiByteToWideChar(cp, opt, inp.c_str(), inp.length(), nullptr, 0);
if (!wlen) {
return false;
}
wchar_t* wstr = (wchar_t*) malloc(wlen * sizeof(wchar_t));
if (wstr == nullptr) {
return false;
}
if (!MultiByteToWideChar(cp, opt, inp.c_str(), inp.length(), wstr, wlen)) {
free(wstr);
return false;
}
out = std::wstring(wstr, wlen);
free(wstr);
return true;
}
bool wchar_util::wstr_to_str(std::string& out, std::wstring inp, unsigned int cp) {
DWORD opt = getWideCharToMultiByteOptions(WC_ERR_INVALID_CHARS, cp);
int len = WideCharToMultiByte(cp, opt, inp.c_str(), inp.length(), nullptr, 0, nullptr, nullptr);
if (!len) {
return false;
}
char* str = (char*) malloc(len);
if (str == nullptr) {
return false;
}
if (!WideCharToMultiByte(cp, opt, inp.c_str(), inp.length(), str, len, nullptr, nullptr)) {
free(str);
return false;
}
out = std::string(str, len);
free(str);
return true;
}
/**
* @brief Convert wstring version argv to UTF-8 encoding argv
* @param ArgvW Source
* @param argc The count of parameters
* @param argv dest (Need free memory by calling freeArgv)
* @return true if OK
*/
bool ArgvWToArgv(const LPWSTR* ArgvW, int argc, char**& argv) {
if (!ArgvW) return false;
std::list<std::string> li;
for (int i = 0; i < argc; i++) {
if (!ArgvW[i]) return false;
std::wstring s = ArgvW[i];
std::string r;
if (!wchar_util::wstr_to_str(r, s, CP_UTF8)) return false;
li.push_back(r);
}
char** t;
if (!listToPointer<std::string, char*>(li, t, &stringToChar, &freeChar)) {
return false;
}
argv = t;
return true;
}
bool wchar_util::getArgv(char**& argv, int& argc) {
auto cm = GetCommandLineW();
int argcw = 0;
auto argvw = CommandLineToArgvW(cm, &argcw);
if (!argvw) return false;
char** t;
if (!ArgvWToArgv(argvw, argcw, t)) {
LocalFree(argvw);
return false;
}
LocalFree(argvw);
argc = argcw;
argv = t;
return true;
}
void wchar_util::freeArgv(char** argv, int argc) {
freePointerList<char*>(argv, argc, nullptr);
}
#endif

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wchar_util.h Normal file
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#ifndef _UTIL_WCHAR_UTIL_H
#define _UTIL_WCHAR_UTIL_H
#include<string>
namespace wchar_util {
#if _WIN32
/**
* @brief Get correct options for MultiByteToWideChar
* @param ori_options Origin options
* @param cp Code Page
* @return Result options
*/
unsigned long getMultiByteToWideCharOptions(const unsigned long ori_options, unsigned int cp);
/**
* @brief Get correct options for WideCharToMultiByte
* @param ori_options Origin options
* @param cp Code Page
* @return Result options
*/
unsigned long getWideCharToMultiByteOptions(const unsigned long ori_options, unsigned int cp);
/**
* @brief Convert string to wstring
* @param out Output string
* @param inp Input string
* @param cp Code page of input string
* @returns true if successed
*/
bool str_to_wstr(std::wstring& out, std::string inp, unsigned int cp);
/**
* @brief Convert wstring to string
* @param out Output string
* @param inp Input string
* @param cp Code page of output string
* @returns true if successed
*/
bool wstr_to_str(std::string& out, std::wstring inp, unsigned int cp);
/**
* @brief Get unicode version argv by using win api
* @param argv Result argv (need free memory by calling freeArgv.
* @param argc argc
* @return true if OK
*/
bool getArgv(char**& argv, int& argc);
void freeArgv(char** argv, int argc);
#endif
}
#endif