winamp/Src/replicant/nx/win/nxstring.c

756 lines
15 KiB
C

#include "nxstring.h"
#include "foundation/error.h"
#include <shlwapi.h>
#include "foundation/atomics.h"
#include <wchar.h>
#include <stdarg.h>
#include <stdio.h>
#include <assert.h>
#pragma comment(lib, "shlwapi.lib")
//#define NX_STRING_STRICT_HEAP
HANDLE string_heap = 0;
int NXStringSetHeap(HANDLE _string_heap)
{
if (!string_heap)
{
string_heap = _string_heap;
return NErr_Success;
}
else
{
return NErr_NoAction;
}
}
// don't include null terminator here
static size_t NXStringMallocSize(size_t characters)
{
/* TODO: overflow check? */
const nx_string_t dummy=NULL;
size_t header = (size_t)&dummy->string[0] - (size_t)dummy;
return header + (characters+1) * sizeof(wchar_t);
}
// don't include null terminator here
nx_string_t NXStringMalloc(size_t characters)
{
if (!string_heap)
{
string_heap = GetProcessHeap();
}
return NXStringMallocWithHeap(string_heap, characters);
}
nx_string_t NXStringRealloc(nx_string_t str, size_t characters)
{
nx_string_t new_str = (nx_string_t)HeapReAlloc(string_heap, 0, str, NXStringMallocSize(characters));
// on failure, kick back the original block (TODO need to review this)
if (!new_str)
{
return str;
}
return new_str;
}
nx_string_t NXStringMallocWithHeap(HANDLE heap, size_t characters)
{
#ifdef NX_STRING_STRICT_HEAP
nx_string_t str;
size_t string_size = NXStringMallocSize(characters);
size_t allocated_size = (string_size + 8191) & ~4095;
size_t offset = 4096 - (string_size & 4095);
size_t pages = allocated_size / 4096;
uint8_t *protect_start;
void *mem = VirtualAlloc(0, allocated_size, MEM_COMMIT, PAGE_READWRITE);
if (!mem)
return 0;
protect_start = (uint8_t *)mem + (pages-1)*4096;
VirtualProtect(protect_start, 4096, PAGE_NOACCESS, 0);
str = (nx_string_t)((uint8_t *)mem + offset);
str->ref_count = 1;
str->len = characters;
return str;
#else
nx_string_t str = (nx_string_t)HeapAlloc(heap, 0, NXStringMallocSize(characters));
if (str)
{
str->ref_count = 1;
str->len = characters;
}
return str;
#endif
}
int NXStringFree(HANDLE heap, nx_string_t str)
{
#ifdef NX_STRING_STRICT_HEAP
uint8_t *mem = (uint8_t *)((size_t)str & 4095);
VirtualProtect(mem, 4096, PAGE_NOACCESS, 0);
assert(_heapchk() == _HEAPOK);
return NErr_Success;
#else
if (HeapFree(heap, 0, str))
{
return NErr_Success;
}
else
{
return NErr_Error;
}
#endif
}
nx_string_t NXStringCreate(const wchar_t *str)
{
size_t size;
nx_string_t nxstr;
if (!str || (size_t)str <= 65536)
{
return 0;
}
size = wcslen(str);
nxstr = NXStringMalloc(size);
if (nxstr)
{
memcpy(nxstr->string, str, size*sizeof(wchar_t));
nxstr->string[size]=0;
}
return nxstr;
}
int NXStringCreateEmpty(nx_string_t *new_string)
{
nx_string_t nxstr = NXStringMalloc(0);
if (nxstr)
{
nxstr->string[0]=0;
*new_string = nxstr;
return NErr_Success;
}
else
{
return NErr_OutOfMemory;
}
}
nx_string_t NXStringCreateWithHeap(HANDLE heap, const wchar_t *str)
{
size_t size = wcslen(str);
nx_string_t nxstr = NXStringMallocWithHeap(heap, size);
if (nxstr)
{
memcpy(nxstr->string, str, size*sizeof(wchar_t));
nxstr->string[size]=0;
}
return nxstr;
}
nx_string_t NXStringCreateFromUTF8(const char *str)
{
nx_string_t nxstr;
size_t size = MultiByteToWideChar(CP_UTF8, 0, str, -1, 0,0);
if (!size)
{
return 0;
}
nxstr = NXStringMalloc(size-1);
if (nxstr)
{
if (!MultiByteToWideChar(CP_UTF8, 0, str, -1, nxstr->string, (int)size))
{
NXStringFree(string_heap, nxstr);
return 0;
}
}
return nxstr;
}
int NXStringCreateWithUTF8(nx_string_t *new_value, const char *str)
{
size_t size;
nx_string_t nxstr;
if (!str)
{
return NErr_Empty;
}
size = MultiByteToWideChar(CP_UTF8, 0, str, -1, 0,0);
if (!size)
{
return NErr_Error;
}
nxstr = NXStringMalloc(size-1);
if (!nxstr)
{
return NErr_OutOfMemory;
}
if (!MultiByteToWideChar(CP_UTF8, 0, str, -1, nxstr->string, (int)size))
{
NXStringFree(string_heap, nxstr);
return NErr_Error;
}
*new_value = nxstr;
return NErr_Success;
}
int NXStringCreateWithUTF16(nx_string_t *new_value, const wchar_t *str)
{
size_t size;
nx_string_t nxstr;
if (!str)
{
return NErr_Empty;
}
size = wcslen(str);
nxstr = NXStringMalloc(size);
if (!nxstr)
{
return NErr_OutOfMemory;
}
memcpy(nxstr->string, str, size*sizeof(wchar_t));
nxstr->string[size]=0;
*new_value = nxstr;
return NErr_Success;
}
int NXStringCreateWithCString(nx_string_t *new_value, const char *str, nx_charset_t charset)
{
nx_string_t nxstr;
size_t size = MultiByteToWideChar(charset, 0, str, -1, 0,0);
if (!size)
{
return NErr_Error;
}
nxstr = NXStringMalloc(size-1);
if (!nxstr)
{
return NErr_OutOfMemory;
}
if (!MultiByteToWideChar(charset, 0, str, -1, nxstr->string, (int)size))
{
NXStringFree(string_heap, nxstr);
return NErr_Error;
}
*new_value = nxstr;
return NErr_Success;
}
nx_string_t NXStringRetain(nx_string_t string)
{
if (!string)
{
return 0;
}
nx_atomic_inc(&string->ref_count);
return string;
}
void NXStringRelease(nx_string_t string)
{
if (string)
{
if (nx_atomic_dec(&string->ref_count) == 0)
{
NXStringFree(string_heap, string);
}
}
}
nx_string_t NXStringCreateFromPath(const wchar_t *folder, const wchar_t *filename)
{
nx_string_t pathstr = NXStringMalloc(MAX_PATH);
if (pathstr)
{
PathCombineW(pathstr->string, folder, filename);
pathstr->len = wcslen(pathstr->string);
}
return pathstr;
}
nx_string_t NXStringCreateFromUInt64(uint64_t value)
{
nx_string_t intstr = NXStringMalloc(21);
if (intstr)
{
_ui64tow(value, intstr->string, 10);
intstr->len = wcslen(intstr->string);
}
return intstr;
}
int NXStringCreateWithUInt64(nx_string_t *new_value, uint64_t value)
{
nx_string_t intstr = NXStringMalloc(21);
if (!intstr)
{
return NErr_OutOfMemory;
}
_ui64tow(value, intstr->string, 10);
intstr->len = wcslen(intstr->string);
*new_value = intstr;
return NErr_Success;
}
int NXStringCreateWithInt64(nx_string_t *new_value, int64_t value)
{
nx_string_t intstr = NXStringMalloc(21);
if (!intstr)
{
return NErr_OutOfMemory;
}
_i64tow(value, intstr->string, 10);
intstr->len = wcslen(intstr->string);
*new_value = intstr;
return NErr_Success;
}
int NXStringCreateWithBytes(nx_string_t *new_string, const void *data, size_t len, nx_charset_t charset)
{
nx_string_t nxstr;
if (!len)
{
return NXStringCreateEmpty(new_string);
}
if (charset == nx_charset_utf16le)
{
nxstr = NXStringMalloc(len/2);
if (nxstr)
{
memcpy(nxstr->string, data, len);
nxstr->string[len/2]=0;
nxstr->len = len/2;
*new_string = nxstr;
return NErr_Success;
}
else
{
return NErr_OutOfMemory;
}
}
else if (charset == nx_charset_utf16be)
{
nxstr = NXStringMalloc(len/2);
if (nxstr)
{
LCMapString(LOCALE_INVARIANT, LCMAP_BYTEREV, (LPCWSTR)data, (int)len/2, nxstr->string, (int)len/2);
nxstr->string[len/2]=0;
nxstr->len = len/2;
*new_string = nxstr;
return NErr_Success;
}
else
{
return NErr_OutOfMemory;
}
}
else
{
int size = MultiByteToWideChar((UINT)charset, 0, (const char *)data, (int)len, 0, 0);
if (!size)
{
return NErr_Error;
}
nxstr = NXStringMalloc(size);
if (nxstr)
{
if (!MultiByteToWideChar((UINT)charset, 0, (const char *)data, (int)len, nxstr->string, size))
{
NXStringFree(string_heap, nxstr);
return NErr_Error;
}
nxstr->string[size]=0;
nxstr->len = size;
*new_string = nxstr;
return NErr_Success;
}
else
{
return NErr_OutOfMemory;
}
}
}
size_t NXStringGetLength(nx_string_t string)
{
return (string ? string->len : 0);
}
/* --- Keyword (ASCII) comparison --- */
int NXStringKeywordCompareWithCString(nx_string_t string, const char *compare_to)
{
const wchar_t *src = string->string;
const char *dst = compare_to;
int ret = 0 ;
while( ! (ret = (int)((*src & ~0x20) - (*dst & ~0x20))) && *dst)
{
++src, ++dst;
}
if ( ret < 0 )
{
ret = -1 ;
}
else if ( ret > 0 )
{
ret = 1 ;
}
return( ret );
}
int NXStringKeywordCompare(nx_string_t string, nx_string_t compare_to)
{
const wchar_t *src = string->string;
const wchar_t *dst = compare_to->string;
int ret = 0 ;
while( ! (ret = (int)((*src & ~0x20) - (*dst & ~0x20))) && *dst)
{
++src, ++dst;
}
if ( ret < 0 )
{
ret = -1 ;
}
else if ( ret > 0 )
{
ret = 1 ;
}
return( ret );
}
int NXStringKeywordCaseCompare(nx_string_t string, nx_string_t compare_to)
{
const wchar_t *src = string->string;
const wchar_t *dst = compare_to->string;
int ret = 0 ;
while( ! (ret = (int)(*src - (wchar_t)*dst)) && *dst)
{
++src, ++dst;
}
if ( ret < 0 )
{
ret = -1 ;
}
else if ( ret > 0 )
{
ret = 1 ;
}
return( ret );
}
int NXStringCreateBasePathFromFilename(nx_string_t filename, nx_string_t *basepath)
{
nx_string_t nxstr;
size_t len = filename->len;
while (len && filename->string[len-1] != '\\' && filename->string[len-1] != '/')
{
len--;
}
if (!len)
{
return NErr_Empty;
}
nxstr = NXStringMalloc(len);
if (!nxstr)
{
return NErr_OutOfMemory;
}
memcpy(nxstr->string, filename->string, sizeof(wchar_t)*len);
nxstr->string[len]=0;
*basepath = nxstr;
return NErr_Success;
}
int NXStringGetCString(nx_string_t string, char *user_buffer, size_t user_buffer_length, const char **out_cstring, size_t *out_cstring_length)
{
size_t size;
/* TODO: error check this with large strings and small user_buffer_length sizes */
if (!string)
{
return NErr_NullPointer;
}
if (user_buffer_length == 0)
return NErr_Insufficient;
size = WideCharToMultiByte(CP_ACP, 0, string->string, (int)string->len, user_buffer, (int)user_buffer_length-1, NULL, NULL);
if (size == 0 && GetLastError() == ERROR_INSUFFICIENT_BUFFER)
size = user_buffer_length-1;
user_buffer[size]=0;
*out_cstring = user_buffer;
*out_cstring_length = (size_t)size;
return NErr_Success;
}
int NXStringGetDoubleValue(nx_string_t string, double *value)
{
if (!string)
return NErr_NullPointer;
*value = wcstod(string->string, 0);
return NErr_Success;
}
int NXStringGetBytesSize(size_t *byte_count, nx_string_t string, nx_charset_t charset, int flags)
{
if (charset == nx_charset_utf16le)
{
if (flags & nx_string_get_bytes_size_null_terminate)
*byte_count = (string->len + 1)* sizeof(wchar_t);
else
*byte_count = string->len * sizeof(wchar_t);
return NErr_DirectPointer;
}
else
{
size_t size=0;
/*if (flags & nx_string_get_bytes_size_null_terminate)
size = WideCharToMultiByte(charset, 0, string->string, string->len, 0, 0, NULL, NULL);
else*/
size = WideCharToMultiByte(charset, 0, string->string, (int)string->len, 0, 0, NULL, NULL);
if (!size)
return NErr_Error;
if (flags & nx_string_get_bytes_size_null_terminate)
*byte_count = size+1;
else
*byte_count = size;
return NErr_Success;
}
}
int NXStringGetBytesDirect(const void **bytes, size_t *length, nx_string_t string, nx_charset_t charset, int flags)
{
if (charset == nx_charset_utf16le)
{
*bytes = string->string;
if (length)
{
if (flags & nx_string_get_bytes_size_null_terminate)
*length = (string->len+1) * sizeof(wchar_t); // TODO: overflow check
else
*length = string->len * sizeof(wchar_t); // TODO: overflow check
}
return NErr_Success;
}
else
{
return NErr_Error;
}
}
int NXStringGetBytes(size_t *bytes_copied, nx_string_t string, void *bytes, size_t length, nx_charset_t charset, int flags)
{
if (charset == nx_charset_utf16le)
{
length/=2;
if (flags & nx_string_get_bytes_size_null_terminate)
{
if (length == 0)
return NErr_Insufficient;
length--;
}
if (length > string->len)
length = string->len;
wmemcpy((wchar_t *)bytes, string->string, length);
if (flags & nx_string_get_bytes_size_null_terminate)
((wchar_t *)bytes)[length++]=0;
if (bytes_copied)
*bytes_copied = length * 2;
return NErr_Success;
}
else
{
size_t size=0;
if (flags & nx_string_get_bytes_size_null_terminate)
{
size = WideCharToMultiByte(charset, 0, string->string, (int)string->len, (LPSTR)bytes, (int)length-1, NULL, NULL);
((char *)bytes)[size]=0;
}
else
{
size = WideCharToMultiByte(charset, 0, string->string, (int)string->len, (LPSTR)bytes, (int)length, NULL, NULL);
}
if (!size)
{
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
{
if (flags & nx_string_get_bytes_size_null_terminate)
size = length-1;
else
size=length;
}
else
{
return NErr_Error;
}
}
if (bytes_copied)
{
if (flags & nx_string_get_bytes_size_null_terminate)
{
if (size)
*bytes_copied = size+1;
else
*bytes_copied = length+1;
}
else
{
if (size)
*bytes_copied = size;
else
*bytes_copied = length;
}
}
return NErr_Success;
}
}
int NXStringGetIntegerValue(nx_string_t string, int *value)
{
*value = wcstol(string->string, 0, 10);
return NErr_Success;
}
int NXStringGetGUIDValue(nx_string_t string, GUID *out_guid)
{
/* TODO: it'd be nice if this was a bit more flexible on input, e.g. no dashes vs dashes */
GUID guid = GUID_NULL;
size_t offset = 0;
int Data1, Data2, Data3;
int Data4[8] = {0};
for (;;)
{
if (string->string[offset] == '{')
{
offset++;
}
else if (string->string[offset] == ' ')
{
offset++;
}
else
{
break;
}
}
//{ 0x1b3ca60c, 0xda98, 0x4826, { 0xb4, 0xa9, 0xd7, 0x97, 0x48, 0xa5, 0xfd, 0x73 } };
swscanf( string->string, L"%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X",
&Data1, &Data2, &Data3, Data4 + 0, Data4 + 1,
Data4 + 2, Data4 + 3, Data4 + 4, Data4 + 5, Data4 + 6, Data4 + 7 );
// Cross assign all the values
guid.Data1 = Data1;
guid.Data2 = Data2;
guid.Data3 = Data3;
guid.Data4[0] = Data4[0];
guid.Data4[1] = Data4[1];
guid.Data4[2] = Data4[2];
guid.Data4[3] = Data4[3];
guid.Data4[4] = Data4[4];
guid.Data4[5] = Data4[5];
guid.Data4[6] = Data4[6];
guid.Data4[7] = Data4[7];
*out_guid = guid;
return NErr_Success;
}
nx_compare_result NXStringCompare(nx_string_t string1, nx_string_t string2, nx_compare_options options)
{
int compareFlags = 0;
if (0 != (nx_compare_case_insensitive & options))
{
compareFlags |= NORM_IGNORECASE;
}
return CompareString(LOCALE_USER_DEFAULT, compareFlags, string1->string, -1, string2->string, -1) - 2;
}
int NXStringCreateWithFormatting(nx_string_t *new_string, const char *format, ...)
{
size_t cch, ret;
char *temp = 0;
va_list v;
va_start(v, format);
cch = _vscprintf(format, v);
if (cch == -1)
{
return NErr_Error;
}
if (cch > 256)
{
temp = (char *)malloc(cch+1);
if (!temp)
{
return NErr_OutOfMemory;
}
vsprintf(temp, format, v);
ret = NXStringCreateWithUTF8(new_string, temp);
free(temp);
}
else
{
temp = (char *)_malloca(cch+1);
if (!temp)
{
return NErr_OutOfMemory;
}
vsprintf(temp, format, v);
ret = NXStringCreateWithUTF8(new_string, temp);
}
va_end(v);
return (int)ret;
}