mirror of
https://github.com/edeproject/ede.git
synced 2023-08-10 21:13:03 +03:00
121 lines
2.7 KiB
C++
121 lines
2.7 KiB
C++
//
|
|
// Compat.cc for pekwm
|
|
// Copyright © 2009 Claes Nästén <me@pekdon.net>
|
|
//
|
|
// This program is licensed under the GNU GPL.
|
|
// See the LICENSE file for more information.
|
|
//
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif // HAVE_CONFIG_H
|
|
|
|
#include "Compat.hh"
|
|
#include "Util.hh"
|
|
|
|
#include <string>
|
|
#include <cstring>
|
|
extern "C" {
|
|
#include <stdarg.h>
|
|
#include <wchar.h>
|
|
}
|
|
|
|
#ifndef HAVE_UNSETENV
|
|
#include <errno.h>
|
|
#endif // ! HAVE_UNSETENV
|
|
|
|
using std::string;
|
|
using std::wstring;
|
|
|
|
#ifndef HAVE_SWPRINTF
|
|
/**< Message displayed when %ls formatting is attempted. */
|
|
static const wchar_t *SWPRINTF_LS_NOT_SUPPORTED = L"%ls format string not supported";
|
|
|
|
/**
|
|
* Compat swprintf, print formatted wide string.
|
|
*
|
|
* @param wcs Result string, maxlen long.
|
|
* @param maxlen Maximum number of characters to print.
|
|
* @param format Formatting string.
|
|
* @param ... Formatting arguments.
|
|
* @return Number of characters written or -1 on error.
|
|
*/
|
|
namespace std {
|
|
int
|
|
swprintf(wchar_t *wcs, size_t maxlen, const wchar_t *format, ...)
|
|
{
|
|
size_t len;
|
|
string mb_format(Util::to_mb_str(format));
|
|
|
|
// Look for wide string formatting, not yet implemented.
|
|
if (mb_format.find("%ls") != string::npos) {
|
|
len = std::min(wcslen(SWPRINTF_LS_NOT_SUPPORTED), maxlen - 1);
|
|
wmemcpy(wcs, SWPRINTF_LS_NOT_SUPPORTED, len);
|
|
} else {
|
|
char *res = new char[maxlen];
|
|
|
|
va_list ap;
|
|
va_start(ap, format);
|
|
vsnprintf(res, maxlen, mb_format.c_str(), ap);
|
|
va_end(ap);
|
|
|
|
wstring w_res(Util::to_wide_str(res));
|
|
len = std::min(maxlen - 1, w_res.size());
|
|
wmemcpy(wcs, w_res.c_str(), len);
|
|
|
|
delete [] res;
|
|
}
|
|
|
|
// Null terminate and return result.
|
|
wcs[len] = L'\0';
|
|
|
|
return wcslen(wcs);
|
|
}
|
|
}
|
|
#endif // HAVE_SWPRINTF
|
|
|
|
#ifndef HAVE_SETENV
|
|
/**
|
|
* Compat setenv, insert variable to environment.
|
|
*/
|
|
int
|
|
setenv(const char *name, const char *value, int overwrite)
|
|
{
|
|
// Invalid parameters
|
|
if (! name || ! value) {
|
|
return -1;
|
|
}
|
|
// Do not overwrite
|
|
if (! overwrite && getenv(name)) {
|
|
return 0;
|
|
}
|
|
|
|
size_t len = strlen(name) + strlen(value) + 2;
|
|
char *str = new char[len];
|
|
if (! str) {
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
snprintf(str, len, "%s=%s", name, value);
|
|
|
|
return (putenv(str));
|
|
}
|
|
#endif // ! HAVE_SETENV
|
|
|
|
#ifndef HAVE_UNSETENV
|
|
/**
|
|
* Compat unsetenv, removes variable from the environment.
|
|
*/
|
|
int
|
|
unsetenv(const char *name) {
|
|
const char *value = getenv(name);
|
|
if (value && strlen(value)) {
|
|
return setenv(name, "", 1);
|
|
} else {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
}
|
|
#endif // ! HAVE_UNSETENV
|