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/* windows.c */
/* implements Windows specific functions */
#include "dive.h"
#include "display.h"
#include <windows.h>
#include <shlobj.h>
#include <stdio.h>
#include <fcntl.h>
#include <assert.h>
#include <dirent.h>
#include <zip.h>
const char system_divelist_default_font[] = "Sans 8";
const char *system_default_filename(void)
{
char datapath[MAX_PATH];
const char *user;
char *buffer;
int len;
/* I don't think this works on Windows */
user = getenv("USERNAME");
if (! SUCCEEDED(SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, 0, datapath))) {
datapath[0] = '.';
datapath[1] = '\0';
}
len = strlen(datapath) + strlen(user) + 17;
buffer = malloc(len);
snprintf(buffer, len, "%s\\Subsurface\\%s.xml", datapath, user);
return buffer;
}
int enumerate_devices (device_callback_t callback, void *userdata)
{
// Open the registry key.
HKEY hKey;
int index = -1;
LONG rc = RegOpenKeyEx (HKEY_LOCAL_MACHINE, "HARDWARE\\DEVICEMAP\\SERIALCOMM", 0, KEY_QUERY_VALUE, &hKey);
if (rc != ERROR_SUCCESS) {
return -1;
}
// Get the number of values.
DWORD count = 0;
rc = RegQueryInfoKey (hKey, NULL, NULL, NULL, NULL, NULL, NULL, &count, NULL, NULL, NULL, NULL);
if (rc != ERROR_SUCCESS) {
RegCloseKey(hKey);
return -1;
}
DWORD i;
for (i = 0; i < count; ++i) {
// Get the value name, data and type.
char name[512], data[512];
DWORD name_len = sizeof (name);
DWORD data_len = sizeof (data);
DWORD type = 0;
rc = RegEnumValue (hKey, i, name, &name_len, NULL, &type, (LPBYTE) data, &data_len);
if (rc != ERROR_SUCCESS) {
RegCloseKey(hKey);
return -1;
}
// Ignore non-string values.
if (type != REG_SZ)
continue;
// Prevent a possible buffer overflow.
if (data_len >= sizeof (data)) {
RegCloseKey(hKey);
return -1;
}
// Null terminate the string.
data[data_len] = 0;
callback (data, userdata);
index++;
if (is_default_dive_computer_device(name))
index = i;
}
RegCloseKey(hKey);
return index;
}
/* this function converts a utf-8 string to win32's utf-16 2 byte string.
* the caller function should manage the allocated memory.
*/
static wchar_t *utf8_to_utf16_fl(const char *utf8, char *file, int line)
{
assert(utf8 != NULL);
assert(file != NULL);
assert(line);
/* estimate buffer size */
const int sz = strlen(utf8) + 1;
wchar_t *utf16 = (wchar_t *)malloc(sizeof(wchar_t) * sz);
if (!utf16) {
fprintf(stderr, "%s:%d: %s %d.", file, line, "cannot allocate buffer of size", sz);
return NULL;
}
if (MultiByteToWideChar(CP_UTF8, 0, utf8, -1, utf16, sz))
return utf16;
fprintf(stderr, "%s:%d: %s", file, line, "cannot convert string.");
free((void *)utf16);
return NULL;
}
#define utf8_to_utf16(s) utf8_to_utf16_fl(s, __FILE__, __LINE__)
/* bellow we provide a set of wrappers for some I/O functions to use wchar_t.
* on win32 this solves the issue that we need paths to be utf-16 encoded.
*/
int subsurface_open(const char *path, int oflags, mode_t mode)
{
int ret = -1;
wchar_t *wpath = utf8_to_utf16(path);
if (wpath) {
ret = _wopen(wpath, oflags, mode);
free((void *)wpath);
return ret;
}
return ret;
}
FILE *subsurface_fopen(const char *path, const char *mode)
{
FILE *ret = NULL;
wchar_t *wpath = utf8_to_utf16(path);
if (wpath) {
const int len = strlen(mode);
wchar_t wmode[len + 1];
for (int i = 0; i < len; i++)
wmode[i] = (wchar_t)mode[i];
wmode[len] = 0;
ret = _wfopen(wpath, wmode);
free((void *)wpath);
return ret;
}
return ret;
}
/* here we return a void pointer instead of _WDIR or DIR pointer */
void *subsurface_opendir(const char *path)
{
_WDIR *ret = NULL;
wchar_t *wpath = utf8_to_utf16(path);
if (wpath) {
ret = _wopendir(wpath);
free((void *)wpath);
return (void *)ret;
}
return (void *)ret;
}
#ifndef O_BINARY
#define O_BINARY 0
#endif
/* we use zip_fdopen since zip_open doesn't have a wchar_t version */
struct zip *subsurface_zip_open_readonly(const char *path, int flags, int *errorp)
{
int fd = subsurface_open(path, O_RDONLY | O_BINARY, 0);
struct zip *ret = zip_fdopen(fd, flags, errorp);
if (!ret)
close(fd);
return ret;
}
int subsurface_zip_close(struct zip *zip)
{
return zip_close(zip);
}
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