mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-28 22:46:06 +00:00
573 lines
14 KiB
C++
573 lines
14 KiB
C++
/* ---------------------------------------------------------------------------
|
|
Nullsoft Database Engine
|
|
--------------------
|
|
codename: Near Death Experience
|
|
--------------------------------------------------------------------------- */
|
|
|
|
/* ---------------------------------------------------------------------------
|
|
|
|
All Purposes Functions
|
|
|
|
--------------------------------------------------------------------------- */
|
|
|
|
#include "nde.h"
|
|
#include "BinaryField.h"
|
|
#include "Binary32Field.h"
|
|
#include "vfs.h"
|
|
#include "ColumnField.h"
|
|
#include "IndexField.h"
|
|
#include "StringField.h"
|
|
#include "FilenameField.h"
|
|
#include "IntegerField.h"
|
|
#include "Int64Field.h"
|
|
#include "Int128Field.h"
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#ifdef _WIN32
|
|
int (WINAPI *findNLSString)(LCID Locale, DWORD dwFindNLSStringFlags, LPCWSTR lpStringSource, int cchSource, LPCWSTR lpStringValue, int cchValue, LPINT pcchFound) = NDE_FindNLSString;
|
|
#endif
|
|
|
|
//---------------------------------------------------------------------------
|
|
bool CompatibleFields(unsigned char oldType, unsigned char newType)
|
|
{
|
|
if (oldType == newType) // duh :)
|
|
return true;
|
|
// going from an int field to another int equivalent field is OK
|
|
if ((oldType == FIELD_INTEGER || oldType == FIELD_BOOLEAN || oldType == FIELD_DATETIME || oldType == FIELD_LENGTH || oldType == FIELD_INT64) &&
|
|
(newType == FIELD_INTEGER || newType == FIELD_BOOLEAN || newType == FIELD_DATETIME || newType == FIELD_LENGTH || newType == FIELD_INT64)) {
|
|
return true;
|
|
}
|
|
|
|
// going from string to filename or filename to string is OK
|
|
if ((oldType == FIELD_FILENAME && newType == FIELD_STRING)
|
|
|| (oldType == FIELD_STRING && newType == FIELD_FILENAME))
|
|
{
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
uint32_t AllocNewPos(VFILE *Handle)
|
|
{
|
|
Vfseek(Handle, 0, SEEK_END);
|
|
return Vftell(Handle);
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
Field *TranslateObject(unsigned char Type, Table *tbl)
|
|
{
|
|
switch (Type)
|
|
{
|
|
case FIELD_COLUMN: //0
|
|
return new ColumnField();
|
|
case FIELD_INDEX: //1
|
|
return new IndexField();
|
|
case FIELD_STRING: // 3
|
|
return new StringField();
|
|
case FIELD_INTEGER: // 4
|
|
return new IntegerField();
|
|
case FIELD_BINARY: // 6
|
|
return new BinaryField();
|
|
case FIELD_DATETIME: // 10
|
|
return new DateTimeField();
|
|
case FIELD_LENGTH: // 11
|
|
return new LengthField();
|
|
case FIELD_FILENAME: // 12
|
|
return new FilenameField();
|
|
case FIELD_INT64: // 13
|
|
return new Int64Field();
|
|
case FIELD_BINARY32: // 14
|
|
return new Binary32Field();
|
|
case FIELD_INT128: // 15
|
|
return new Int128Field();
|
|
default:
|
|
#ifdef WIN32
|
|
if (!tbl->HasErrors())
|
|
{
|
|
//MessageBox(plugin.hwndParent, "Your database has been corrupted!\n\nWinamp will try to continue, but some of the library metadata may be lost :(", "Database Error", 0);
|
|
}
|
|
#else
|
|
printf("NDE Error: unknown field type encountered\n");
|
|
#endif
|
|
tbl->IncErrorCount();
|
|
return new Field();
|
|
}
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------------------------
|
|
#ifndef __ANDROID__
|
|
const void *memmem(const void *a, const void *b, size_t s, size_t l)
|
|
{
|
|
size_t n = s - l;
|
|
while (n--)
|
|
{
|
|
if (!memcmp(a, b, l))
|
|
return a;
|
|
a = (const uint8_t *)a + 1;
|
|
}
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
// a faster way of doing min(wcslen(str), _len)
|
|
static size_t nde_wcsnlen(const wchar_t *str, size_t _len)
|
|
{
|
|
size_t len = 0;
|
|
while (str && *str++)
|
|
{
|
|
if (_len == len)
|
|
return len;
|
|
len++;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
// len must be <= wcslen(b)
|
|
static int nde_wcsnicmp(const wchar_t *a, const wchar_t *b, size_t len)
|
|
{
|
|
return CompareStringW(LOCALE_USER_DEFAULT, NORM_IGNORECASE, a, (int)nde_wcsnlen(a, len), b, (int)len) - 2;
|
|
}
|
|
|
|
/* this is a VERY LIMITED emulation of the vista only function. it ONLY supports the ways we're currently call it. it's also slow. */
|
|
int WINAPI NDE_FindNLSString(LCID Locale, DWORD dwFindNLSStringFlags, LPCWSTR lpStringSource, int cchSource, LPCWSTR lpStringValue, int cchValue, LPINT pcchFound)
|
|
{
|
|
dwFindNLSStringFlags &= ~NORM_LINGUISTIC_CASING; // remove on XP and below, not supported
|
|
if (dwFindNLSStringFlags & FIND_STARTSWITH)
|
|
{
|
|
dwFindNLSStringFlags &= ~FIND_STARTSWITH; // clear flag
|
|
size_t len = wcslen(lpStringValue);
|
|
if (CompareStringW(Locale, dwFindNLSStringFlags, lpStringSource, (int)nde_wcsnlen(lpStringSource, len), lpStringValue, (int)len) == CSTR_EQUAL)
|
|
return 0;
|
|
else
|
|
return -1;
|
|
}
|
|
else if (dwFindNLSStringFlags & FIND_ENDSWITH)
|
|
{
|
|
dwFindNLSStringFlags &= ~FIND_ENDSWITH; // clear flag
|
|
int lenp = (int)wcslen(lpStringValue), lend = (int)wcslen(lpStringSource);
|
|
if (lend < lenp) return -1; // too short
|
|
if (CompareStringW(Locale, dwFindNLSStringFlags, lpStringSource+lend-lenp, -1, lpStringValue, -1) == CSTR_EQUAL)
|
|
return 0;
|
|
else
|
|
return -1;
|
|
}
|
|
else if (dwFindNLSStringFlags & FIND_FROMSTART)
|
|
{
|
|
dwFindNLSStringFlags &= ~FIND_FROMSTART; // clear flag
|
|
int s2len = (int)wcslen(lpStringValue);
|
|
int s1len = (int)wcslen(lpStringSource);
|
|
const wchar_t *p;
|
|
for (p = lpStringSource;*p && s1len >= s2len;p++,s1len--)
|
|
if (CompareStringW(Locale, dwFindNLSStringFlags, p, min(s1len, s2len), lpStringValue, (int)s2len) == CSTR_EQUAL)
|
|
return 0;
|
|
return -1;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int nde_wcsicmp(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
return CompareStringW(LOCALE_USER_DEFAULT, NORM_IGNORECASE|NORM_IGNORENONSPACE, a, -1, b, -1) - 2;
|
|
}
|
|
|
|
bool nde_wcsbegins(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
int index = findNLSString(LOCALE_USER_DEFAULT, FIND_STARTSWITH|NORM_LINGUISTIC_CASING|NORM_IGNORECASE|NORM_IGNORENONSPACE, a, -1, b, -1, 0);
|
|
return (index != -1);
|
|
}
|
|
|
|
bool nde_wcsends(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
int index = findNLSString(LOCALE_USER_DEFAULT, FIND_ENDSWITH|NORM_LINGUISTIC_CASING|NORM_IGNORECASE|NORM_IGNORENONSPACE, a, -1, b, -1, 0);
|
|
return (index != -1);
|
|
}
|
|
|
|
bool nde_wcscontains(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
int index = findNLSString(LOCALE_USER_DEFAULT, FIND_FROMSTART|NORM_LINGUISTIC_CASING|NORM_IGNORECASE|NORM_IGNORENONSPACE, a, -1, b, -1, 0);
|
|
return index != -1;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
int mywcsicmp(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
if (!a && !b) return 0;
|
|
if (!a && b) return 1;
|
|
if (!b) return -1;
|
|
int r = nde_wcsicmp(a, b);
|
|
return min(max(r, -1), 1);
|
|
}
|
|
|
|
int mywcsicmp_fn(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
if (!a && !b) return 0;
|
|
if (!a && b) return 1;
|
|
if (!b) return -1;
|
|
int r = nde_wcsicmp_fn(a, b);
|
|
return min(max(r, -1), 1);
|
|
}
|
|
|
|
int nde_wcsicmp_fn(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
return CompareStringW(LOCALE_USER_DEFAULT, NORM_IGNORECASE, a, -1, b, -1) - 2;
|
|
}
|
|
|
|
bool nde_fnbegins(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
int index = findNLSString(LOCALE_USER_DEFAULT, FIND_STARTSWITH|NORM_IGNORECASE, a, -1, b, -1, 0);
|
|
return (index != -1);
|
|
}
|
|
|
|
bool nde_fnends(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
int index = findNLSString(LOCALE_USER_DEFAULT, FIND_ENDSWITH|NORM_IGNORECASE, a, -1, b, -1, 0);
|
|
return (index != -1);
|
|
}
|
|
|
|
bool nde_fncontains(const wchar_t *a, const wchar_t *b)
|
|
{
|
|
int index = findNLSString(LOCALE_USER_DEFAULT, FIND_FROMSTART|NORM_IGNORECASE, a, -1, b, -1, 0);
|
|
return index != -1;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef __ANDROID__
|
|
|
|
//---------------------------------------------------------------------------
|
|
// a faster way of doing min(wcslen(str), _len)
|
|
size_t nde_strnlen(const char *str, size_t _len)
|
|
{
|
|
size_t len = 0;
|
|
while (str && *str++)
|
|
{
|
|
if (_len == len)
|
|
return len;
|
|
len++;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
// len must be <= strlen(b)
|
|
int nde_strnicmp(const char *a, const char *b, size_t len)
|
|
{
|
|
return strncasecmp(a,b,len);
|
|
}
|
|
|
|
int nde_strnicmp_ignore(const char *a, const char *b, size_t len)
|
|
{
|
|
return strncasecmp(a,b,len);
|
|
}
|
|
|
|
char *stristr(const char *s1, const char *s2)
|
|
{
|
|
size_t s2len = strlen(s2);
|
|
const char *p;
|
|
for (p = s1;*p;p++)
|
|
if (!nde_strnicmp(p, s2, s2len))
|
|
return (char *)p;
|
|
return NULL;
|
|
}
|
|
|
|
char *stristr_ignore(const char *s1, const char *s2)
|
|
{
|
|
size_t s2len = strlen(s2);
|
|
const char *p;
|
|
for (p = s1;*p;p++)
|
|
if (!nde_strnicmp_ignore(p, s2, s2len))
|
|
return (char *)p;
|
|
return NULL;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
int nde_stricmp(const char *a, const char *b)
|
|
{
|
|
return strcasecmp(a,b);
|
|
}
|
|
|
|
int nde_stricmp_ignore(const char *a, const char *b)
|
|
{
|
|
return strcasecmp(a,b); // TODO: maybe strcoll?
|
|
}
|
|
|
|
int mystricmp(const char *a, const char *b)
|
|
{
|
|
if (!a && !b) return 0;
|
|
if (!a && b) return 1;
|
|
if (!b) return -1;
|
|
int r = nde_stricmp(a, b);
|
|
return min(max(r, -1), 1);
|
|
}
|
|
|
|
char* mystristr(const char *a, const char *b)
|
|
{
|
|
return (!a || !b) ? NULL : stristr(a, b);
|
|
}
|
|
|
|
char* mystristr_fn(const char *a, const char *b)
|
|
{
|
|
return (!a || !b) ? NULL : stristr_fn(a, b);
|
|
}
|
|
|
|
int mystricmp_fn(const char *a, const char *b)
|
|
{
|
|
if (!a && !b) return 0;
|
|
if (!a && b) return 1;
|
|
if (!b) return -1;
|
|
int r = nde_stricmp_fn(a, b);
|
|
return min(max(r, -1), 1);
|
|
}
|
|
|
|
char *stristr_fn(const char *s1, const char *s2)
|
|
{
|
|
size_t s2len = strlen(s2);
|
|
const char *p;
|
|
for (p = s1;*p;p++)
|
|
if (!nde_strnicmp_fn(p, s2, s2len))
|
|
return (char *)p;
|
|
return NULL;
|
|
}
|
|
|
|
int nde_stricmp_fn(const char *a, const char *b)
|
|
{
|
|
return strcasecmp(a,b);
|
|
}
|
|
|
|
int nde_strnicmp_fn(const char *a, const char *b, size_t len)
|
|
{
|
|
return strncasecmp(a,b, len);
|
|
|
|
}
|
|
|
|
static uint16_t swap_utf16LE(uint16_t value)
|
|
{
|
|
#ifdef BIG_ENDIAN
|
|
return (value >> 8) | (value << 8);
|
|
#else
|
|
return value;
|
|
#endif
|
|
}
|
|
|
|
static uint16_t swap_utf16BE(uint16_t value)
|
|
{
|
|
#ifdef LITTLE_ENDIAN
|
|
return (value >> 8) | (value << 8);
|
|
#else
|
|
return value;
|
|
#endif
|
|
}
|
|
|
|
static size_t utf16LE_to_ucs4_character(const uint16_t *utf16_string, size_t len, uint32_t *codepoint)
|
|
{
|
|
uint16_t lead = swap_utf16LE(utf16_string[0]);
|
|
if (lead < 0xD800 || lead >= 0xE000)
|
|
{
|
|
return lead;
|
|
}
|
|
|
|
if (lead < 0xDC00)
|
|
{
|
|
if (len >= 2)
|
|
{
|
|
uint16_t trail = swap_utf16LE(utf16_string[1]);
|
|
if (trail >= 0xDC00 && trail < 0xE000)
|
|
{
|
|
*codepoint = 0x10000 + ((lead - 0xD800) << 10) + (trail - 0xDC00);
|
|
return 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
*codepoint=0xFFFD; // invalid
|
|
return 1;
|
|
}
|
|
|
|
static size_t utf16BE_to_ucs4_character(const uint16_t *utf16_string, size_t len, uint32_t *codepoint)
|
|
{
|
|
uint16_t lead = swap_utf16LE(utf16_string[0]);
|
|
if (lead < 0xD800 || lead >= 0xE000)
|
|
{
|
|
return lead;
|
|
}
|
|
|
|
if (lead < 0xDC00)
|
|
{
|
|
if (len >= 2)
|
|
{
|
|
uint16_t trail = swap_utf16LE(utf16_string[1]);
|
|
if (trail >= 0xDC00 && trail < 0xE000)
|
|
{
|
|
*codepoint = 0x10000 + ((lead - 0xD800) << 10) + (trail - 0xDC00);
|
|
return 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
*codepoint=0xFFFD; // invalid
|
|
return 1;
|
|
}
|
|
|
|
static size_t ucs4count(uint32_t codepoint)
|
|
{
|
|
if (codepoint < 0x80)
|
|
return 1;
|
|
else if (codepoint < 0x800)
|
|
return 2;
|
|
else if (codepoint < 0x10000)
|
|
return 3;
|
|
else if (codepoint < 0x200000)
|
|
return 4;
|
|
else if (codepoint < 0x4000000)
|
|
return 5;
|
|
else if (codepoint <= 0x7FFFFFFF)
|
|
return 6;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static size_t ucs4_to_utf8_character(char *target, uint32_t codepoint, size_t max)
|
|
{
|
|
size_t count = ucs4count(codepoint);
|
|
|
|
if (!count)
|
|
return 0;
|
|
|
|
if (count>max) return 0;
|
|
|
|
if (target == 0)
|
|
return count;
|
|
|
|
switch (count)
|
|
{
|
|
case 6:
|
|
target[5] = 0x80 | (codepoint & 0x3F);
|
|
codepoint = codepoint >> 6;
|
|
codepoint |= 0x4000000;
|
|
case 5:
|
|
target[4] = 0x80 | (codepoint & 0x3F);
|
|
codepoint = codepoint >> 6;
|
|
codepoint |= 0x200000;
|
|
case 4:
|
|
target[3] = 0x80 | (codepoint & 0x3F);
|
|
codepoint = codepoint >> 6;
|
|
codepoint |= 0x10000;
|
|
case 3:
|
|
target[2] = 0x80 | (codepoint & 0x3F);
|
|
codepoint = codepoint >> 6;
|
|
codepoint |= 0x800;
|
|
case 2:
|
|
target[1] = 0x80 | (codepoint & 0x3F);
|
|
codepoint = codepoint >> 6;
|
|
codepoint |= 0xC0;
|
|
case 1:
|
|
target[0] = codepoint;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
size_t utf16LE_to_utf8(const uint16_t *src, size_t source_len, char *dst, size_t out_len)
|
|
{
|
|
uint32_t codepoint=0xFFFD;
|
|
size_t position=0;
|
|
size_t characters_processed=0;
|
|
|
|
if (!dst) // they just want the size
|
|
{
|
|
while (source_len)
|
|
{
|
|
characters_processed = utf16LE_to_ucs4_character(src, source_len, &codepoint);
|
|
if (codepoint == 0xFFFD)
|
|
break;
|
|
|
|
if (!codepoint)
|
|
break;
|
|
|
|
source_len -= characters_processed;
|
|
|
|
characters_processed = ucs4count(codepoint);
|
|
if (!characters_processed)
|
|
break;
|
|
|
|
position+=characters_processed;
|
|
}
|
|
return position;
|
|
}
|
|
|
|
while(source_len && position<out_len)
|
|
{
|
|
characters_processed = utf16LE_to_ucs4_character(src, source_len, &codepoint);
|
|
if (codepoint == 0xFFFD)
|
|
break;
|
|
|
|
if (!codepoint)
|
|
break;
|
|
|
|
source_len -= characters_processed;
|
|
|
|
characters_processed=ucs4_to_utf8_character(&dst[position], codepoint, out_len-position);
|
|
if (!characters_processed)
|
|
break;
|
|
position+=characters_processed;
|
|
}
|
|
if (position<out_len)
|
|
dst[position]=0;
|
|
return position;
|
|
}
|
|
|
|
size_t utf16BE_to_utf8(const uint16_t *src, size_t source_len, char *dst, size_t out_len)
|
|
{
|
|
uint32_t codepoint=0xFFFD;
|
|
size_t position=0;
|
|
size_t characters_processed=0;
|
|
|
|
if (!dst) // they just want the size
|
|
{
|
|
while (source_len)
|
|
{
|
|
characters_processed = utf16BE_to_ucs4_character(src, source_len, &codepoint);
|
|
if (codepoint == 0xFFFD)
|
|
break;
|
|
|
|
if (!codepoint)
|
|
break;
|
|
|
|
source_len -= characters_processed;
|
|
|
|
characters_processed = ucs4count(codepoint);
|
|
if (!characters_processed)
|
|
break;
|
|
|
|
position+=characters_processed;
|
|
}
|
|
return position;
|
|
}
|
|
|
|
while(source_len && position<out_len)
|
|
{
|
|
characters_processed = utf16BE_to_ucs4_character(src, source_len, &codepoint);
|
|
if (codepoint == 0xFFFD)
|
|
break;
|
|
|
|
if (!codepoint)
|
|
break;
|
|
|
|
source_len -= characters_processed;
|
|
|
|
characters_processed=ucs4_to_utf8_character(&dst[position], codepoint, out_len-position);
|
|
if (!characters_processed)
|
|
break;
|
|
position+=characters_processed;
|
|
}
|
|
if (position<out_len)
|
|
dst[position]=0;
|
|
return position;
|
|
}
|
|
#endif |