Check-in [e5562e8884]

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Overview
Comment:Remove some common files.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1:e5562e8884f2efc33434eea8d1ff8f3307256f8f
User & Date: stephanie.gawroriski 2019-06-11 22:17:12
Context
2019-06-11
22:20
Remove the other headers, not needed. check-in: 5ccbd9181c user: stephanie.gawroriski tags: trunk
22:17
Remove some common files. check-in: e5562e8884 user: stephanie.gawroriski tags: trunk
22:11
Remove reliance on common files. check-in: 53871e2fb3 user: stephanie.gawroriski tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Deleted ratufacoat/libretro-common/compat/compat_posix_string.c.

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/* Copyright  (C) 2010-2018 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (compat_posix_string.c).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <ctype.h>

#include <compat/posix_string.h>

#ifdef _WIN32

#undef strcasecmp
#undef strdup
#undef isblank
#undef strtok_r
#include <ctype.h>
#include <stdlib.h>
#include <stddef.h>
#include <compat/strl.h>

#include <string.h>

int retro_strcasecmp__(const char *a, const char *b)
{
   while (*a && *b)
   {
      int a_ = tolower(*a);
      int b_ = tolower(*b);

      if (a_ != b_)
         return a_ - b_;

      a++;
      b++;
   }

   return tolower(*a) - tolower(*b);
}

char *retro_strdup__(const char *orig)
{
   size_t len = strlen(orig) + 1;
   char *ret  = (char*)malloc(len);
   if (!ret)
      return NULL;

   strlcpy(ret, orig, len);
   return ret;
}

int retro_isblank__(int c)
{
   return (c == ' ') || (c == '\t');
}

char *retro_strtok_r__(char *str, const char *delim, char **saveptr)
{
   char *first = NULL;
   if (!saveptr || !delim)
      return NULL;

   if (str)
      *saveptr = str;

   do
   {
      char *ptr = NULL;
      first = *saveptr;
      while (*first && strchr(delim, *first))
         *first++ = '\0';

      if (*first == '\0')
         return NULL;

      ptr = first + 1;

      while (*ptr && !strchr(delim, *ptr))
         ptr++;

      *saveptr = ptr + (*ptr ? 1 : 0);
      *ptr     = '\0';
   } while (strlen(first) == 0);

   return first;
}

#endif
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Deleted ratufacoat/libretro-common/compat/compat_strl.c.

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/* Copyright  (C) 2010-2018 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (compat_strl.c).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <stdlib.h>
#include <ctype.h>

#include <compat/strl.h>

/* Implementation of strlcpy()/strlcat() based on OpenBSD. */

#ifndef __MACH__

size_t strlcpy(char *dest, const char *source, size_t size)
{
   size_t src_size = 0;
   size_t        n = size;

   if (n)
      while (--n && (*dest++ = *source++)) src_size++;

   if (!n)
   {
      if (size) *dest = '\0';
      while (*source++) src_size++;
   }

   return src_size;
}

size_t strlcat(char *dest, const char *source, size_t size)
{
   size_t len = strlen(dest);

   dest += len;

   if (len > size)
      size = 0;
   else
      size -= len;

   return len + strlcpy(dest, source, size);
}
#endif

char *strldup(const char *s, size_t n)
{
   char *dst = (char*)malloc(sizeof(char) * (n + 1));
   strlcpy(dst, s, n);
   return dst;
}
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Deleted ratufacoat/libretro-common/compat/fopen_utf8.c.

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/* Copyright  (C) 2010-2018 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (fopen_utf8.c).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <compat/fopen_utf8.h>
#include <encodings/utf.h>
#include <stdio.h>
#include <stdlib.h>

#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500 || defined(_XBOX)
#ifndef LEGACY_WIN32
#define LEGACY_WIN32
#endif
#endif

#ifdef _WIN32
#undef fopen

void *fopen_utf8(const char * filename, const char * mode)
{
#if defined(_XBOX)
   return fopen(filename, mode);
#elif defined(LEGACY_WIN32)
   FILE             *ret = NULL;
   char * filename_local = utf8_to_local_string_alloc(filename);

   if (!filename_local)
      return NULL;
   ret = fopen(filename_local, mode);
   if (filename_local)
      free(filename_local);
   return ret;
#else
   wchar_t * filename_w = utf8_to_utf16_string_alloc(filename);
   wchar_t * mode_w = utf8_to_utf16_string_alloc(mode);
   FILE* ret = _wfopen(filename_w, mode_w);
   free(filename_w);
   free(mode_w);
   return ret;
#endif
}
#endif
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Deleted ratufacoat/libretro-common/encodings/encoding_utf.c.

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/* Copyright  (C) 2010-2018 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (encoding_utf.c).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <stdint.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>

#include <boolean.h>
#include <compat/strl.h>
#include <retro_inline.h>

#include <encodings/utf.h>

#if defined(_WIN32) && !defined(_XBOX)
#include <windows.h>
#elif defined(_XBOX)
#include <xtl.h>
#endif

static unsigned leading_ones(uint8_t c)
{
   unsigned ones = 0;
   while (c & 0x80)
   {
      ones++;
      c <<= 1;
   }

   return ones;
}

/* Simple implementation. Assumes the sequence is
 * properly synchronized and terminated. */

size_t utf8_conv_utf32(uint32_t *out, size_t out_chars,
      const char *in, size_t in_size)
{
   unsigned i;
   size_t ret = 0;
   while (in_size && out_chars)
   {
      unsigned extra, shift;
      uint32_t c;
      uint8_t first = *in++;
      unsigned ones = leading_ones(first);

      if (ones > 6 || ones == 1) /* Invalid or desync. */
         break;

      extra = ones ? ones - 1 : ones;
      if (1 + extra > in_size) /* Overflow. */
         break;

      shift = (extra - 1) * 6;
      c     = (first & ((1 << (7 - ones)) - 1)) << (6 * extra);

      for (i = 0; i < extra; i++, in++, shift -= 6)
         c |= (*in & 0x3f) << shift;

      *out++ = c;
      in_size -= 1 + extra;
      out_chars--;
      ret++;
   }

   return ret;
}

bool utf16_conv_utf8(uint8_t *out, size_t *out_chars,
     const uint16_t *in, size_t in_size)
{
   static uint8_t kUtf8Limits[5] = { 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
   size_t out_pos = 0;
   size_t in_pos  = 0;

   for (;;)
   {
      unsigned numAdds;
      uint32_t value;

      if (in_pos == in_size)
      {
         *out_chars = out_pos;
         return true;
      }
      value = in[in_pos++];
      if (value < 0x80)
      {
         if (out)
            out[out_pos] = (char)value;
         out_pos++;
         continue;
      }

      if (value >= 0xD800 && value < 0xE000)
      {
         uint32_t c2;

         if (value >= 0xDC00 || in_pos == in_size)
            break;
         c2 = in[in_pos++];
         if (c2 < 0xDC00 || c2 >= 0xE000)
            break;
         value = (((value - 0xD800) << 10) | (c2 - 0xDC00)) + 0x10000;
      }

      for (numAdds = 1; numAdds < 5; numAdds++)
         if (value < (((uint32_t)1) << (numAdds * 5 + 6)))
            break;
      if (out)
         out[out_pos] = (char)(kUtf8Limits[numAdds - 1]
               + (value >> (6 * numAdds)));
      out_pos++;
      do
      {
         numAdds--;
         if (out)
            out[out_pos] = (char)(0x80
                  + ((value >> (6 * numAdds)) & 0x3F));
         out_pos++;
      }while (numAdds != 0);
   }

   *out_chars = out_pos;
   return false;
}

/* Acts mostly like strlcpy.
 *
 * Copies the given number of UTF-8 characters,
 * but at most d_len bytes.
 *
 * Always NULL terminates.
 * Does not copy half a character.
 *
 * Returns number of bytes. 's' is assumed valid UTF-8.
 * Use only if 'chars' is considerably less than 'd_len'. */
size_t utf8cpy(char *d, size_t d_len, const char *s, size_t chars)
{
   const uint8_t *sb     = (const uint8_t*)s;
   const uint8_t *sb_org = sb;

   if (!s)
      return 0;

   while (*sb && chars-- > 0)
   {
      sb++;
      while ((*sb & 0xC0) == 0x80) sb++;
   }

   if ((size_t)(sb - sb_org) > d_len-1 /* NUL */)
   {
      sb = sb_org + d_len-1;
      while ((*sb & 0xC0) == 0x80) sb--;
   }

   memcpy(d, sb_org, sb-sb_org);
   d[sb-sb_org] = '\0';

   return sb-sb_org;
}

const char *utf8skip(const char *str, size_t chars)
{
   const uint8_t *strb = (const uint8_t*)str;
   if (!chars)
      return str;
   do
   {
      strb++;
      while ((*strb & 0xC0)==0x80) strb++;
      chars--;
   } while(chars);
   return (const char*)strb;
}

size_t utf8len(const char *string)
{
   size_t ret = 0;

   if (!string)
      return 0;

   while (*string)
   {
      if ((*string & 0xC0) != 0x80)
         ret++;
      string++;
   }
   return ret;
}

static uint8_t utf8_walkbyte(const char **string)
{
   return *((*string)++);
}

/* Does not validate the input, returns garbage if it's not UTF-8. */
uint32_t utf8_walk(const char **string)
{
   uint8_t first = utf8_walkbyte(string);
   uint32_t ret  = 0;

   if (first < 128)
      return first;

   ret    = (ret << 6) | (utf8_walkbyte(string) & 0x3F);
   if (first >= 0xE0)
      ret = (ret << 6) | (utf8_walkbyte(string) & 0x3F);
   if (first >= 0xF0)
      ret = (ret << 6) | (utf8_walkbyte(string) & 0x3F);

   if (first >= 0xF0)
      return ret | (first & 7) << 18;
   if (first >= 0xE0)
      return ret | (first & 15) << 12;
   return ret | (first & 31) << 6;
}

static bool utf16_to_char(uint8_t **utf_data,
      size_t *dest_len, const uint16_t *in)
{
   unsigned len    = 0;

   while (in[len] != '\0')
      len++;

   utf16_conv_utf8(NULL, dest_len, in, len);
   *dest_len  += 1;
   *utf_data   = (uint8_t*)malloc(*dest_len);
   if (*utf_data == 0)
      return false;

   return utf16_conv_utf8(*utf_data, dest_len, in, len);
}

bool utf16_to_char_string(const uint16_t *in, char *s, size_t len)
{
   size_t     dest_len  = 0;
   uint8_t *utf16_data  = NULL;
   bool            ret  = utf16_to_char(&utf16_data, &dest_len, in);

   if (ret)
   {
      utf16_data[dest_len] = 0;
      strlcpy(s, (const char*)utf16_data, len);
   }

   free(utf16_data);
   utf16_data = NULL;

   return ret;
}

/* Returned pointer MUST be freed by the caller if non-NULL. */
static char* mb_to_mb_string_alloc(const char *str,
      enum CodePage cp_in, enum CodePage cp_out)
{
   char *path_buf         = NULL;
   wchar_t *path_buf_wide = NULL;
   int path_buf_len       = 0;
   int path_buf_wide_len  = 0;

   if (!str || !*str)
      return NULL;

   (void)path_buf;
   (void)path_buf_wide;
   (void)path_buf_len;
   (void)path_buf_wide_len;

#if !defined(_WIN32) || defined(_XBOX)
   /* assume string needs no modification if not on Windows */
   return strdup(str);
#else
#ifdef UNICODE
   /* TODO/FIXME: Not implemented. */
   return strdup(str);
#else

   /* Windows 95 will return 0 from these functions with a UTF8 codepage set without MSLU. From an unknown MSDN version (others omit this info):
    *   - CP_UTF8 Windows 98/Me, Windows NT 4.0 and later: Translate using UTF-8. When this is set, dwFlags must be zero.
    *   - Windows 95: Under the Microsoft Layer for Unicode, MultiByteToWideChar also supports CP_UTF7 and CP_UTF8.
    */
   path_buf_wide_len = MultiByteToWideChar(cp_in, 0, str, -1, NULL, 0);

   if (path_buf_wide_len)
   {
      path_buf_wide = (wchar_t*)
         calloc(path_buf_wide_len + sizeof(wchar_t), sizeof(wchar_t));

      if (path_buf_wide)
      {
         MultiByteToWideChar(cp_in, 0,
               str, -1, path_buf_wide, path_buf_wide_len);

         if (*path_buf_wide)
         {
            path_buf_len = WideCharToMultiByte(cp_out, 0,
                  path_buf_wide, -1, NULL, 0, NULL, NULL);

            if (path_buf_len)
            {
               path_buf = (char*)
                  calloc(path_buf_len + sizeof(char), sizeof(char));

               if (path_buf)
               {
                  WideCharToMultiByte(cp_out, 0,
                        path_buf_wide, -1, path_buf,
                        path_buf_len, NULL, NULL);

                  free(path_buf_wide);

                  if (*path_buf)
                     return path_buf;

                  free(path_buf);
                  return NULL;
               }
            }
            else
            {
               free(path_buf_wide);
               return strdup(str);
            }
         }
      }
   }
   else
      return strdup(str);

   if (path_buf_wide)
      free(path_buf_wide);

   return NULL;
#endif
#endif
}

/* Returned pointer MUST be freed by the caller if non-NULL. */
char* utf8_to_local_string_alloc(const char *str)
{
   return mb_to_mb_string_alloc(str, CODEPAGE_UTF8, CODEPAGE_LOCAL);
}

/* Returned pointer MUST be freed by the caller if non-NULL. */
char* local_to_utf8_string_alloc(const char *str)
{
   return mb_to_mb_string_alloc(str, CODEPAGE_LOCAL, CODEPAGE_UTF8);
}

/* Returned pointer MUST be freed by the caller if non-NULL. */
wchar_t* utf8_to_utf16_string_alloc(const char *str)
{
#ifdef _WIN32
   int len = 0;
   int out_len = 0;
#else
   size_t len = 0;
   size_t out_len = 0;
#endif
   wchar_t *buf = NULL;

   if (!str || !*str)
      return NULL;

#ifdef _WIN32
   len = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);

   if (len)
   {
      buf = (wchar_t*)calloc(len, sizeof(wchar_t));

      if (!buf)
         return NULL;

      out_len = MultiByteToWideChar(CP_UTF8, 0, str, -1, buf, len);
   }
   else
   {
      /* fallback to ANSI codepage instead */
      len = MultiByteToWideChar(CP_ACP, 0, str, -1, NULL, 0);

      if (len)
      {
         buf = (wchar_t*)calloc(len, sizeof(wchar_t));

         if (!buf)
            return NULL;

         out_len = MultiByteToWideChar(CP_ACP, 0, str, -1, buf, len);
      }
   }

   if (out_len < 0)
   {
      free(buf);
      return NULL;
   }
#else
   /* NOTE: For now, assume non-Windows platforms' locale is already UTF-8. */
   len = mbstowcs(NULL, str, 0) + 1;

   if (len)
   {
      buf = (wchar_t*)calloc(len, sizeof(wchar_t));

      if (!buf)
         return NULL;

      out_len = mbstowcs(buf, str, len);
   }

   if (out_len == (size_t)-1)
   {
      free(buf);
      return NULL;
   }
#endif

   return buf;
}

/* Returned pointer MUST be freed by the caller if non-NULL. */
char* utf16_to_utf8_string_alloc(const wchar_t *str)
{
#ifdef _WIN32
   int len = 0;
   int out_len = 0;
#else
   size_t len = 0;
   size_t out_len = 0;
#endif
   char *buf = NULL;

   if (!str || !*str)
      return NULL;

#ifdef _WIN32
   len = WideCharToMultiByte(CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL);

   if (len)
   {
      buf = (char*)calloc(len, sizeof(char));

      if (!buf)
         return NULL;

      out_len = WideCharToMultiByte(CP_UTF8, 0, str, -1, buf, len, NULL, NULL);
   }
   else
   {
      /* fallback to ANSI codepage instead */
      len = WideCharToMultiByte(CP_ACP, 0, str, -1, NULL, 0, NULL, NULL);

      if (len)
      {
         buf = (char*)calloc(len, sizeof(char));

         if (!buf)
            return NULL;

         out_len = WideCharToMultiByte(CP_ACP, 0, str, -1, buf, len, NULL, NULL);
      }
   }

   if (out_len < 0)
   {
      free(buf);
      return NULL;
   }
#else
   /* NOTE: For now, assume non-Windows platforms' locale is already UTF-8. */
   len = wcstombs(NULL, str, 0) + 1;

   if (len)
   {
      buf = (char*)calloc(len, sizeof(char));

      if (!buf)
         return NULL;

      out_len = wcstombs(buf, str, len);
   }

   if (out_len == (size_t)-1)
   {
      free(buf);
      return NULL;
   }
#endif

   return buf;
}
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Deleted ratufacoat/libretro-common/memmap/memmap.c.

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/* Copyright  (C) 2010-2018 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (memmap.c).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <stdint.h>
#include <memmap.h>

#ifndef PROT_READ
#define PROT_READ         0x1  /* Page can be read */
#endif

#ifndef PROT_WRITE
#define PROT_WRITE        0x2  /* Page can be written. */
#endif

#ifndef PROT_READWRITE
#define PROT_READWRITE    0x3  /* Page can be written to and read from. */
#endif

#ifndef PROT_EXEC
#define PROT_EXEC         0x4  /* Page can be executed. */
#endif

#ifndef PROT_NONE
#define PROT_NONE         0x0  /* Page can not be accessed. */
#endif

#ifndef MAP_FAILED
#define MAP_FAILED        ((void *) -1)
#endif

#ifdef _WIN32
void* mmap(void *addr, size_t len, int prot, int flags,
      int fildes, size_t offset)
{
   void     *map = (void*)NULL;
   HANDLE handle = INVALID_HANDLE_VALUE;

   switch (prot)
   {
      case PROT_READ:
      default:
         handle = CreateFileMapping((HANDLE)
               _get_osfhandle(fildes), 0, PAGE_READONLY, 0,
               len, 0);
         if (!handle)
            break;
         map = (void*)MapViewOfFile(handle, FILE_MAP_READ, 0, 0, len);
         CloseHandle(handle);
         break;
      case PROT_WRITE:
         handle = CreateFileMapping((HANDLE)
               _get_osfhandle(fildes),0,PAGE_READWRITE,0,
               len, 0);
         if (!handle)
            break;
         map = (void*)MapViewOfFile(handle, FILE_MAP_WRITE, 0, 0, len);
         CloseHandle(handle);
         break;
      case PROT_READWRITE:
         handle = CreateFileMapping((HANDLE)
               _get_osfhandle(fildes),0,PAGE_READWRITE,0,
               len, 0);
         if (!handle)
            break;
         map = (void*)MapViewOfFile(handle, FILE_MAP_ALL_ACCESS, 0, 0, len);
         CloseHandle(handle);
         break;
   }

   if (map == (void*)NULL)
      return((void*)MAP_FAILED);
   return((void*) ((int8_t*)map + offset));
}

int munmap(void *addr, size_t length)
{
   if (!UnmapViewOfFile(addr))
      return -1;
   return 0;
}

int mprotect(void *addr, size_t len, int prot)
{
   /* Incomplete, just assumes PAGE_EXECUTE_READWRITE right now
    * instead of correctly handling prot */
   prot = 0;
   if (prot & (PROT_READ | PROT_WRITE | PROT_EXEC))
      prot = PAGE_EXECUTE_READWRITE;
   return VirtualProtect(addr, len, prot, 0);
}

#elif !defined(HAVE_MMAN)
void* mmap(void *addr, size_t len, int prot, int flags,
      int fildes, size_t offset)
{
   return malloc(len);
}

int munmap(void *addr, size_t len)
{
   free(addr);
   return 0;
}

int mprotect(void *addr, size_t len, int prot)
{
   /* stub - not really needed at this point
    * since this codepath has no dynarecs. */
   return 0;
}

#endif

#if defined(__MACH__) && defined(__arm__)
#include <libkern/OSCacheControl.h>
#endif

int memsync(void *start, void *end)
{
   size_t len = (char*)end - (char*)start;
#if defined(__MACH__) && defined(__arm__)
   sys_dcache_flush(start ,len);
   sys_icache_invalidate(start, len);
   return 0;
#elif defined(__arm__) && !defined(__QNX__)
   (void)len;
   __clear_cache(start, end);
   return 0;
#elif defined(HAVE_MMAN)
   return msync(start, len, MS_SYNC | MS_INVALIDATE
#ifdef __QNX__
         MS_CACHE_ONLY
#endif
         );
#else
   (void)len;
   return 0;
#endif
}

int memprotect(void *addr, size_t len)
{
   return mprotect(addr, len, PROT_READ | PROT_WRITE | PROT_EXEC);
}
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Deleted ratufacoat/libretro-common/streams/file_stream.c.

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/* Copyright  (C) 2010-2018 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (file_stream.c).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#include <errno.h>

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <streams/file_stream.h>
#define VFS_FRONTEND
#include <vfs/vfs_implementation.h>

static const int64_t vfs_error_return_value      = -1;

static retro_vfs_get_path_t filestream_get_path_cb = NULL;
static retro_vfs_open_t filestream_open_cb         = NULL;
static retro_vfs_close_t filestream_close_cb       = NULL;
static retro_vfs_size_t filestream_size_cb         = NULL;
static retro_vfs_truncate_t filestream_truncate_cb = NULL;
static retro_vfs_tell_t filestream_tell_cb         = NULL;
static retro_vfs_seek_t filestream_seek_cb         = NULL;
static retro_vfs_read_t filestream_read_cb         = NULL;
static retro_vfs_write_t filestream_write_cb       = NULL;
static retro_vfs_flush_t filestream_flush_cb       = NULL;
static retro_vfs_remove_t filestream_remove_cb     = NULL;
static retro_vfs_rename_t filestream_rename_cb     = NULL;

struct RFILE
{
   struct retro_vfs_file_handle *hfile;
	bool error_flag;
	bool eof_flag;
};

/* VFS Initialization */

void filestream_vfs_init(const struct retro_vfs_interface_info* vfs_info)
{
   const struct retro_vfs_interface* vfs_iface;

   filestream_get_path_cb = NULL;
   filestream_open_cb     = NULL;
   filestream_close_cb    = NULL;
   filestream_tell_cb     = NULL;
   filestream_size_cb     = NULL;
   filestream_truncate_cb = NULL;
   filestream_seek_cb     = NULL;
   filestream_read_cb     = NULL;
   filestream_write_cb    = NULL;
   filestream_flush_cb    = NULL;
   filestream_remove_cb   = NULL;
   filestream_rename_cb   = NULL;

   vfs_iface              = vfs_info->iface;

   if (vfs_info->required_interface_version < FILESTREAM_REQUIRED_VFS_VERSION
         || !vfs_iface)
      return;

   filestream_get_path_cb = vfs_iface->get_path;
   filestream_open_cb     = vfs_iface->open;
   filestream_close_cb    = vfs_iface->close;
   filestream_size_cb     = vfs_iface->size;
   filestream_truncate_cb = vfs_iface->truncate;
   filestream_tell_cb     = vfs_iface->tell;
   filestream_seek_cb     = vfs_iface->seek;
   filestream_read_cb     = vfs_iface->read;
   filestream_write_cb    = vfs_iface->write;
   filestream_flush_cb    = vfs_iface->flush;
   filestream_remove_cb   = vfs_iface->remove;
   filestream_rename_cb   = vfs_iface->rename;
}

/* Callback wrappers */
bool filestream_exists(const char *path)
{
   RFILE *dummy              = NULL;

   if (!path || !*path)
      return false;

   dummy = filestream_open(path,
         RETRO_VFS_FILE_ACCESS_READ,
         RETRO_VFS_FILE_ACCESS_HINT_NONE);

   if (!dummy)
      return false;

   filestream_close(dummy);
   return true;
}

int64_t filestream_get_size(RFILE *stream)
{
   int64_t output;

   if (filestream_size_cb != NULL)
      output = filestream_size_cb(stream->hfile);
   else
      output = retro_vfs_file_size_impl((libretro_vfs_implementation_file*)stream->hfile);

   if (output == vfs_error_return_value)
      stream->error_flag = true;

   return output;
}

int64_t filestream_truncate(RFILE *stream, int64_t length)
{
   int64_t output;

   if (filestream_truncate_cb != NULL)
      output = filestream_truncate_cb(stream->hfile, length);
   else
      output = retro_vfs_file_truncate_impl((libretro_vfs_implementation_file*)stream->hfile, length);

   if (output == vfs_error_return_value)
      stream->error_flag = true;

   return output;
}

/**
 * filestream_open:
 * @path               : path to file
 * @mode               : file mode to use when opening (read/write)
 * @hints              :
 *
 * Opens a file for reading or writing, depending on the requested mode.
 * Returns a pointer to an RFILE if opened successfully, otherwise NULL.
 **/
RFILE *filestream_open(const char *path, unsigned mode, unsigned hints)
{
   struct retro_vfs_file_handle  *fp = NULL;
   RFILE* output                     = NULL;

   if (filestream_open_cb != NULL)
      fp = (struct retro_vfs_file_handle*)
         filestream_open_cb(path, mode, hints);
   else
      fp = (struct retro_vfs_file_handle*)
         retro_vfs_file_open_impl(path, mode, hints);

   if (!fp)
      return NULL;

   output             = (RFILE*)malloc(sizeof(RFILE));
   output->error_flag = false;
   output->eof_flag   = false;
   output->hfile      = fp;
   return output;
}

char *filestream_gets(RFILE *stream, char *s, size_t len)
{
   int c   = 0;
   char *p = s;
   if (!stream)
      return NULL;

   /* get max bytes or up to a newline */

   for (len--; len > 0; len--)
   {
      if ((c = filestream_getc(stream)) == EOF)
         break;
      *p++ = c;
      if (c == '\n')
         break;
   }
   *p = 0;

   if (p == s && c == EOF)
      return NULL;
   return (s);
}

int filestream_getc(RFILE *stream)
{
   char c = 0;
   if (!stream)
      return 0;
   if(filestream_read(stream, &c, 1) == 1)
      return (int)c;
   return EOF;
}

int filestream_scanf(RFILE *stream, const char* format, ...)
{
   char buf[4096];
   char subfmt[64];
   va_list args;
   
   const char * bufiter = buf;
   int64_t startpos     = filestream_tell(stream);
   int        ret       = 0;
   int64_t maxlen       = filestream_read(stream, buf, sizeof(buf)-1);

   buf[maxlen] = '\0';
   
   va_start(args, format);
   
   while (*format)
   {
      if (*format == '%')
      {
         int sublen;
         
         char* subfmtiter = subfmt;
         bool asterisk    = false;
         
         *subfmtiter++    = *format++; /* '%' */
         
         /* %[*][width][length]specifier */
         
         if (*format == '*')
         {
            asterisk = true;
            *subfmtiter++ = *format++;
         }
         
         while (isdigit(*format)) *subfmtiter++ = *format++; /* width */
         
         /* length */
         if (*format == 'h' || *format == 'l')
         {
            if (format[1] == format[0]) *subfmtiter++ = *format++;
            *subfmtiter++ = *format++;
         }
         else if (*format == 'j' || *format == 'z' || *format == 't' || *format == 'L')
         {
            *subfmtiter++ = *format++;
         }
         
         /* specifier - always a single character (except ]) */
         if (*format == '[')
         {
            while (*format != ']') *subfmtiter++ = *format++;
            *subfmtiter++ = *format++;
         }
         else *subfmtiter++ = *format++;
         
         *subfmtiter++ = '%';
         *subfmtiter++ = 'n';
         *subfmtiter++ = '\0';
         
         if (sizeof(void*) != sizeof(long*)) abort(); /* all pointers must have the same size */
         if (asterisk)
         {
            if (sscanf(bufiter, subfmt, &sublen) != 0) break;
         }
         else
         {
            if (sscanf(bufiter, subfmt, va_arg(args, void*), &sublen) != 1) break;
         }
         
         ret++;
         bufiter += sublen;
      }
      else if (isspace(*format))
      {
         while (isspace(*bufiter)) bufiter++;
         format++;
      }
      else
      {
         if (*bufiter != *format)
            break;
         bufiter++;
         format++;
      }
   }
   
   va_end(args);
   filestream_seek(stream, startpos+(bufiter-buf), RETRO_VFS_SEEK_POSITION_START);
   
   return ret;
}

int64_t filestream_seek(RFILE *stream, int64_t offset, int seek_position)
{
   int64_t output;

   if (filestream_seek_cb != NULL)
      output = filestream_seek_cb(stream->hfile, offset, seek_position);
   else
      output = retro_vfs_file_seek_impl((libretro_vfs_implementation_file*)stream->hfile, offset, seek_position);

   if (output == vfs_error_return_value)
      stream->error_flag = true;
   stream->eof_flag = false;

   return output;
}

int filestream_eof(RFILE *stream)
{
   return stream->eof_flag;
}


int64_t filestream_tell(RFILE *stream)
{
   int64_t output;

   if (filestream_size_cb != NULL)
      output = filestream_tell_cb(stream->hfile);
   else
      output = retro_vfs_file_tell_impl((libretro_vfs_implementation_file*)stream->hfile);

   if (output == vfs_error_return_value)
      stream->error_flag = true;

   return output;
}

void filestream_rewind(RFILE *stream)
{
   if (!stream)
      return;
   filestream_seek(stream, 0L, RETRO_VFS_SEEK_POSITION_START);
   stream->error_flag = false;
   stream->eof_flag = false;
}

int64_t filestream_read(RFILE *stream, void *s, int64_t len)
{
   int64_t output;

   if (filestream_read_cb != NULL)
      output = filestream_read_cb(stream->hfile, s, len);
   else
      output = retro_vfs_file_read_impl(
            (libretro_vfs_implementation_file*)stream->hfile, s, len);

   if (output == vfs_error_return_value)
      stream->error_flag = true;
   if (output < len)
      stream->eof_flag = true;

   return output;
}

int filestream_flush(RFILE *stream)
{
   int output;

   if (filestream_flush_cb != NULL)
      output = filestream_flush_cb(stream->hfile);
   else
      output = retro_vfs_file_flush_impl((libretro_vfs_implementation_file*)stream->hfile);

   if (output == vfs_error_return_value)
      stream->error_flag = true;

   return output;
}

int filestream_delete(const char *path)
{
   if (filestream_remove_cb != NULL)
      return filestream_remove_cb(path);

   return retro_vfs_file_remove_impl(path);
}

int filestream_rename(const char *old_path, const char *new_path)
{
   if (filestream_rename_cb != NULL)
      return filestream_rename_cb(old_path, new_path);

   return retro_vfs_file_rename_impl(old_path, new_path);
}

const char *filestream_get_path(RFILE *stream)
{
   if (filestream_get_path_cb != NULL)
      return filestream_get_path_cb(stream->hfile);

   return retro_vfs_file_get_path_impl((libretro_vfs_implementation_file*)stream->hfile);
}

int64_t filestream_write(RFILE *stream, const void *s, int64_t len)
{
   int64_t output;

   if (filestream_write_cb != NULL)
      output = filestream_write_cb(stream->hfile, s, len);
   else
      output = retro_vfs_file_write_impl((libretro_vfs_implementation_file*)stream->hfile, s, len);

   if (output == vfs_error_return_value)
      stream->error_flag = true;

   return output;
}

int filestream_putc(RFILE *stream, int c)
{
   char c_char = (char)c;
   if (!stream)
      return EOF;
   return filestream_write(stream, &c_char, 1)==1 ? c : EOF;
}

int filestream_vprintf(RFILE *stream, const char* format, va_list args)
{
   static char buffer[8 * 1024];
   int64_t num_chars = vsprintf(buffer, format, args);

   if (num_chars < 0)
      return -1;
   else if (num_chars == 0)
      return 0;

   return (int)filestream_write(stream, buffer, num_chars);
}

int filestream_printf(RFILE *stream, const char* format, ...)
{
   va_list vl;
   int result;
   va_start(vl, format);
   result = filestream_vprintf(stream, format, vl);
   va_end(vl);
   return result;
}

int filestream_error(RFILE *stream)
{
   if (stream && stream->error_flag)
      return 1;
   return 0;
}

int filestream_close(RFILE *stream)
{
   int output;
   struct retro_vfs_file_handle* fp = stream->hfile;

   if (filestream_close_cb != NULL)
      output = filestream_close_cb(fp);
   else
      output = retro_vfs_file_close_impl((libretro_vfs_implementation_file*)fp);

   if (output == 0)
      free(stream);

   return output;
}

/**
 * filestream_read_file:
 * @path             : path to file.
 * @buf              : buffer to allocate and read the contents of the
 *                     file into. Needs to be freed manually.
 *
 * Read the contents of a file into @buf.
 *
 * Returns: 1 on success, 0 on failure
 * In the error case, the dereferenced buf is set to NULL and the len is set to -1.
 */
int64_t filestream_read_file(const char *path, void **buf, int64_t *len)
{
   int64_t ret              = 0;
   int64_t content_buf_size = 0;
   void *content_buf        = NULL;
   RFILE *file              = filestream_open(path,
         RETRO_VFS_FILE_ACCESS_READ,
         RETRO_VFS_FILE_ACCESS_HINT_NONE);

   if (!file)
   {
      fprintf(stderr, "Failed to open %s: %s\n", path, strerror(errno));
      goto error;
   }

   content_buf_size = filestream_get_size(file);

   if (content_buf_size < 0)
      goto error;

   content_buf      = malloc((size_t)(content_buf_size + 1));

   if (!content_buf)
      goto error;
   if ((int64_t)(uint64_t)(content_buf_size + 1) != (content_buf_size + 1))
      goto error;

   ret = filestream_read(file, content_buf, (int64_t)content_buf_size);
   if (ret < 0)
   {
      fprintf(stderr, "Failed to read %s: %s\n", path, strerror(errno));
      goto error;
   }

   filestream_close(file);

   *buf    = content_buf;

   /* Allow for easy reading of strings to be safe.
    * Will only work with sane character formatting (Unix). */
   ((char*)content_buf)[ret] = '\0';

   if (len)
      *len = ret;

   return 1;

error:
   if (file)
      filestream_close(file);
   if (content_buf)
      free(content_buf);
   if (len)
      *len = -1;
   *buf = NULL;
   return 0;
}

/**
 * filestream_write_file:
 * @path             : path to file.
 * @data             : contents to write to the file.
 * @size             : size of the contents.
 *
 * Writes data to a file.
 *
 * Returns: true (1) on success, false (0) otherwise.
 */
bool filestream_write_file(const char *path, const void *data, int64_t size)
{
   int64_t ret   = 0;
   RFILE *file   = filestream_open(path,
         RETRO_VFS_FILE_ACCESS_WRITE,
         RETRO_VFS_FILE_ACCESS_HINT_NONE);
   if (!file)
      return false;

   ret = filestream_write(file, data, size);
   filestream_close(file);

   if (ret != size)
      return false;

   return true;
}

char *filestream_getline(RFILE *stream)
{
   char* newline_tmp  = NULL;
   size_t cur_size    = 8;
   size_t idx         = 0;
   int in             = 0;
   char* newline      = (char*)malloc(9);

   if (!stream || !newline)
   {
      if (newline)
         free(newline);
      return NULL;
   }

   in                 = filestream_getc(stream);

   while (in != EOF && in != '\n')
   {
      if (idx == cur_size)
      {
         cur_size    *= 2;
         newline_tmp  = (char*)realloc(newline, cur_size + 1);

         if (!newline_tmp)
         {
            free(newline);
            return NULL;
         }

         newline     = newline_tmp;
      }

      newline[idx++] = in;
      in             = filestream_getc(stream);
   }

   newline[idx]      = '\0';
   return newline;
}
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Deleted ratufacoat/libretro-common/string/stdstring.c.

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/* Copyright  (C) 2010-2018 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (stdstring.c).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <stdint.h>
#include <ctype.h>

#include <string/stdstring.h>
#include <encodings/utf.h>

char *string_to_upper(char *s)
{
   char *cs = (char *)s;
   for ( ; *cs != '\0'; cs++)
      *cs = toupper((unsigned char)*cs);
   return s;
}

char *string_to_lower(char *s)
{
   char *cs = (char *)s;
   for ( ; *cs != '\0'; cs++)
      *cs = tolower((unsigned char)*cs);
   return s;
}

char *string_ucwords(char *s)
{
   char *cs = (char *)s;
   for ( ; *cs != '\0'; cs++)
   {
      if (*cs == ' ')
         *(cs+1) = toupper((unsigned char)*(cs+1));
   }

   s[0] = toupper((unsigned char)s[0]);
   return s;
}

char *string_replace_substring(const char *in,
      const char *pattern, const char *replacement)
{
   size_t numhits, pattern_len, replacement_len, outlen;
   const char *inat   = NULL;
   const char *inprev = NULL;
   char          *out = NULL;
   char        *outat = NULL;

   /* if either pattern or replacement is NULL,
    * duplicate in and let caller handle it. */
   if (!pattern || !replacement)
      return strdup(in);

   pattern_len     = strlen(pattern);
   replacement_len = strlen(replacement);
   numhits         = 0;
   inat            = in;

   while ((inat = strstr(inat, pattern)))
   {
      inat += pattern_len;
      numhits++;
   }

   outlen          = strlen(in) - pattern_len*numhits + replacement_len*numhits;
   out             = (char *)malloc(outlen+1);
   outat           = out;
   inat            = in;
   inprev          = in;

   while ((inat = strstr(inat, pattern)))
   {
      memcpy(outat, inprev, inat-inprev);
      outat += inat-inprev;
      memcpy(outat, replacement, replacement_len);
      outat += replacement_len;
      inat += pattern_len;
      inprev = inat;
   }
   strcpy(outat, inprev);

   return out;
}

/* Remove leading whitespaces */
char *string_trim_whitespace_left(char *const s)
{
   if(s && *s)
   {
      size_t len = strlen(s);
      char *cur  = s;

      while(*cur && isspace((unsigned char)*cur))
      {
         ++cur;
         --len;
      }

      if(s != cur)
         memmove(s, cur, len + 1);

   }

   return s;
}

/* Remove trailing whitespaces */
char *string_trim_whitespace_right(char *const s)
{
   if(s && *s)
   {
      size_t len = strlen(s);
      char  *cur = s + len - 1;

      while(cur != s && isspace((unsigned char)*cur))
      {
         --cur;
         --len;
      }

      cur[isspace((unsigned char)*cur) ? 0 : 1] = '\0';
   }

   return s;
}

/* Remove leading and trailing whitespaces */
char *string_trim_whitespace(char *const s)
{
   string_trim_whitespace_right(s);  /* order matters */
   string_trim_whitespace_left(s);

   return s;
}

char *word_wrap(char* buffer, const char *string, int line_width, bool unicode)
{
   unsigned i   = 0;
   unsigned len = (unsigned)strlen(string);

   while (i < len)
   {
      unsigned counter;
      int pos = (int)(&buffer[i] - buffer);

      /* copy string until the end of the line is reached */
      for (counter = 1; counter <= (unsigned)line_width; counter++)
      {
         const char *character;
         unsigned char_len;
         unsigned j = i;

         /* check if end of string reached */
         if (i == len)
         {
            buffer[i] = 0;
            return buffer;
         }

         character = utf8skip(&string[i], 1);
         char_len  = (unsigned)(character - &string[i]);

         if (!unicode)
            counter += char_len - 1;

         do
         {
            buffer[i] = string[i];
            char_len--;
            i++;
         } while(char_len);

         /* check for newlines embedded in the original input
          * and reset the index */
         if (buffer[j] == '\n')
            counter = 1;
      }

      /* check for whitespace */
      if (string[i] == ' ')
      {
         buffer[i] = '\n';
         i++;
      }
      else
      {
         int k;

         /* check for nearest whitespace back in string */
         for (k = i; k > 0; k--)
         {
            if (string[k] != ' ')
               continue;

            buffer[k] = '\n';
            /* set string index back to character after this one */
            i         = k + 1;
            break;
         }

         if (&buffer[i] - buffer == pos)
            return buffer;
      }
   }

   buffer[i] = 0;

   return buffer;
}
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Deleted ratufacoat/libretro-common/vfs/vfs_implementation.c.

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/* Copyright  (C) 2010-2018 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (vfs_implementation.c).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#if defined(_WIN32)
#  ifdef _MSC_VER
#    define setmode _setmode
#  endif
#  ifdef _XBOX
#    include <xtl.h>
#    define INVALID_FILE_ATTRIBUTES -1
#  else
#    include <io.h>
#    include <fcntl.h>
#    include <direct.h>
#    include <windows.h>
#  endif
#else
#  if defined(PSP)
#    include <pspiofilemgr.h>
#  endif
#  include <sys/types.h>
#  include <sys/stat.h>
#  if !defined(VITA)
#  include <dirent.h>
#  endif
#  include <unistd.h>
#endif

#ifdef __CELLOS_LV2__
#include <cell/cell_fs.h>
#define O_RDONLY CELL_FS_O_RDONLY
#define O_WRONLY CELL_FS_O_WRONLY
#define O_CREAT CELL_FS_O_CREAT
#define O_TRUNC CELL_FS_O_TRUNC
#define O_RDWR CELL_FS_O_RDWR
#else
#include <fcntl.h>
#endif

/* Assume W-functions do not work below Win2K and Xbox platforms */
#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500 || defined(_XBOX)

#ifndef LEGACY_WIN32
#define LEGACY_WIN32
#endif

#endif

#if defined(_WIN32) && !defined(_XBOX)
#if !defined(_MSC_VER) || (defined(_MSC_VER) && _MSC_VER >= 1400)
#define ATLEAST_VC2005
#endif
#endif

#ifdef RARCH_INTERNAL
#ifndef VFS_FRONTEND
#define VFS_FRONTEND
#endif
#endif

#include <vfs/vfs_implementation.h>
#include <libretro.h>
#include <memmap.h>
#include <encodings/utf.h>
#include <compat/fopen_utf8.h>

#define RFILE_HINT_UNBUFFERED (1 << 8)

#ifdef VFS_FRONTEND
struct retro_vfs_file_handle
#else
struct libretro_vfs_implementation_file
#endif
{
   int fd;
   unsigned hints;
   int64_t size;
   char *buf;
   FILE *fp;
   char* orig_path;
#if defined(HAVE_MMAP)
   uint64_t mappos;
   uint64_t mapsize;
   uint8_t *mapped;
#endif
};

int64_t retro_vfs_file_seek_internal(libretro_vfs_implementation_file *stream, int64_t offset, int whence)
{
   if (!stream)
      goto error;

   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
/* VC2005 and up have a special 64-bit fseek */
#ifdef ATLEAST_VC2005
      return _fseeki64(stream->fp, offset, whence);
#elif defined(__CELLOS_LV2__) || defined(_MSC_VER) && _MSC_VER <= 1310
      return fseek(stream->fp, (long)offset, whence);
#else
      return fseeko(stream->fp, (off_t)offset, whence);
#endif

#ifdef HAVE_MMAP
   /* Need to check stream->mapped because this function is
    * called in filestream_open() */
   if (stream->mapped && stream->hints & 
         RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
   {
      /* fseek() returns error on under/overflow but 
       * allows cursor > EOF for
       read-only file descriptors. */
      switch (whence)
      {
         case SEEK_SET:
            if (offset < 0)
               goto error;

            stream->mappos = offset;
            break;

         case SEEK_CUR:
            if ((offset   < 0 && stream->mappos + offset > stream->mappos) ||
                  (offset > 0 && stream->mappos + offset < stream->mappos))
               goto error;

            stream->mappos += offset;
            break;

         case SEEK_END:
            if (stream->mapsize + offset < stream->mapsize)
               goto error;

            stream->mappos = stream->mapsize + offset;
            break;
      }
      return stream->mappos;
   }
#endif

   if (lseek(stream->fd, offset, whence) < 0)
      goto error;

   return 0;

error:
   return -1;
}

/**
 * retro_vfs_file_open_impl:
 * @path               : path to file
 * @mode               : file mode to use when opening (read/write)
 * @hints              :
 *
 * Opens a file for reading or writing, depending on the requested mode.
 * Returns a pointer to an RFILE if opened successfully, otherwise NULL.
 **/

libretro_vfs_implementation_file *retro_vfs_file_open_impl(const char *path, unsigned mode, unsigned hints)
{
   int                                flags = 0;
   const char                     *mode_str = NULL;
   libretro_vfs_implementation_file *stream = (libretro_vfs_implementation_file*)calloc(1, sizeof(*stream));

#ifdef VFS_FRONTEND
   const char                 *dumb_prefix  = "vfsonly://";
   int                      dumb_prefix_len = (int)strlen(dumb_prefix);
   int                             path_len = (int)strlen(path);

   if (path_len >= dumb_prefix_len)
      if (!memcmp(path, dumb_prefix, dumb_prefix_len))
         path += strlen(dumb_prefix);
#endif

   if (!stream)
      return NULL;

   (void)flags;

   stream->hints           = hints;
   stream->orig_path       = strdup(path);

#ifdef HAVE_MMAP
   if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS && mode == RETRO_VFS_FILE_ACCESS_READ)
      stream->hints |= RFILE_HINT_UNBUFFERED;
   else
#endif
      stream->hints &= ~RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS;

   switch (mode)
   {
      case RETRO_VFS_FILE_ACCESS_READ:
         mode_str = "rb";

         flags    = O_RDONLY;
#ifdef _WIN32
         flags   |= O_BINARY;
#endif
         break;

      case RETRO_VFS_FILE_ACCESS_WRITE:
         mode_str = "wb";

         flags    = O_WRONLY | O_CREAT | O_TRUNC;
#ifndef _WIN32
         flags   |= S_IRUSR | S_IWUSR;
#else
         flags   |= O_BINARY;
#endif
         break;

      case RETRO_VFS_FILE_ACCESS_READ_WRITE:
         mode_str = "w+b";

         flags    = O_RDWR | O_CREAT | O_TRUNC;
#ifndef _WIN32
         flags   |= S_IRUSR | S_IWUSR;
#else
         flags   |= O_BINARY;
#endif
         break;

      case RETRO_VFS_FILE_ACCESS_WRITE | RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING:
      case RETRO_VFS_FILE_ACCESS_READ_WRITE | RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING:
         mode_str = "r+b";

         flags    = O_RDWR;
#ifndef _WIN32
         flags   |= S_IRUSR | S_IWUSR;
#else
         flags   |= O_BINARY;
#endif
         break;
         
      default:
         goto error;
   }

   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
   {
      FILE   *fp = (FILE*)fopen_utf8(path, mode_str);

      if (!fp)
         goto error;

      /* Regarding setvbuf:
       *
       * https://www.freebsd.org/cgi/man.cgi?query=setvbuf&apropos=0&sektion=0&manpath=FreeBSD+11.1-RELEASE&arch=default&format=html
       *
       * If the size argument is not zero but buf is NULL, a buffer of the given size will be allocated immediately, and
       * released on close. This is an extension to ANSI C.
       *
       * Since C89 does not support specifying a null buffer with a non-zero size, we create and track our own buffer for it.
       */
      /* TODO: this is only useful for a few platforms, find which and add ifdef */
      stream->fp  = fp;
      stream->buf = (char*)calloc(1, 0x4000);
      setvbuf(stream->fp, stream->buf, _IOFBF, 0x4000);
   }
   else
   {
#if defined(_WIN32) && !defined(_XBOX)
#if defined(LEGACY_WIN32)
      char *path_local    = utf8_to_local_string_alloc(path);
      stream->fd          = open(path_local, flags, 0);
      if (path_local)
         free(path_local);
#else
      wchar_t * path_wide = utf8_to_utf16_string_alloc(path);
      stream->fd          = _wopen(path_wide, flags, 0);
      if (path_wide)
         free(path_wide);
#endif
#else
      stream->fd = open(path, flags, 0);
#endif

      if (stream->fd == -1)
         goto error;

#ifdef HAVE_MMAP
      if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
      {
         stream->mappos  = 0;
         stream->mapped  = NULL;
         stream->mapsize = retro_vfs_file_seek_internal(stream, 0, SEEK_END);

         if (stream->mapsize == (uint64_t)-1)
            goto error;

         retro_vfs_file_seek_internal(stream, 0, SEEK_SET);

         stream->mapped = (uint8_t*)mmap((void*)0,
               stream->mapsize, PROT_READ,  MAP_SHARED, stream->fd, 0);

         if (stream->mapped == MAP_FAILED)
            stream->hints &= ~RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS;
      }
#endif
   }

   retro_vfs_file_seek_internal(stream, 0, SEEK_SET);
   retro_vfs_file_seek_internal(stream, 0, SEEK_END);

   stream->size = retro_vfs_file_tell_impl(stream);

   retro_vfs_file_seek_internal(stream, 0, SEEK_SET);

   return stream;

error:
   retro_vfs_file_close_impl(stream);
   return NULL;
}

int retro_vfs_file_close_impl(libretro_vfs_implementation_file *stream)
{
   if (!stream)
      return -1;

   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
   {
      if (stream->fp)
         fclose(stream->fp);
   }
   else
   {
#ifdef HAVE_MMAP
      if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
         munmap(stream->mapped, stream->mapsize);
#endif
   }

   if (stream->fd > 0)
      close(stream->fd);
   if (stream->buf)
      free(stream->buf);
   if (stream->orig_path)
      free(stream->orig_path);
   free(stream);

   return 0;
}

int retro_vfs_file_error_impl(libretro_vfs_implementation_file *stream)
{
   return ferror(stream->fp);
}

int64_t retro_vfs_file_size_impl(libretro_vfs_implementation_file *stream)
{
   if (!stream)
      return 0;
   return stream->size;
}

int64_t retro_vfs_file_truncate_impl(libretro_vfs_implementation_file *stream, int64_t length)
{
   if (!stream)
      return -1;

#ifdef _WIN32
   if(_chsize(_fileno(stream->fp), length) != 0)
      return -1;
#elif !defined(VITA) && !defined(PSP) && (!defined(SWITCH) || defined(HAVE_LIBNX))
   if(ftruncate(fileno(stream->fp), length) != 0)
      return -1;
#endif

   return 0;
}

int64_t retro_vfs_file_tell_impl(libretro_vfs_implementation_file *stream)
{
   if (!stream)
      return -1;

   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
/* VC2005 and up have a special 64-bit ftell */
#ifdef ATLEAST_VC2005
      return _ftelli64(stream->fp);
#else
      return ftell(stream->fp);
#endif

#ifdef HAVE_MMAP
   /* Need to check stream->mapped because this function
    * is called in filestream_open() */
   if (stream->mapped && stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
      return stream->mappos;
#endif
   if (lseek(stream->fd, 0, SEEK_CUR) < 0)
      return -1;

   return 0;
}

int64_t retro_vfs_file_seek_impl(libretro_vfs_implementation_file *stream, int64_t offset, int seek_position)
{
   int whence = -1;
   switch (seek_position)
   {
      case RETRO_VFS_SEEK_POSITION_START:
         whence = SEEK_SET;
         break;
      case RETRO_VFS_SEEK_POSITION_CURRENT:
         whence = SEEK_CUR;
         break;
      case RETRO_VFS_SEEK_POSITION_END:
         whence = SEEK_END;
         break;
   }

   return retro_vfs_file_seek_internal(stream, offset, whence);
}

int64_t retro_vfs_file_read_impl(libretro_vfs_implementation_file *stream, void *s, uint64_t len)
{
   if (!stream || !s)
      goto error;

   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
      return fread(s, 1, (size_t)len, stream->fp);

#ifdef HAVE_MMAP
   if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
   {
      if (stream->mappos > stream->mapsize)
         goto error;

      if (stream->mappos + len > stream->mapsize)
         len = stream->mapsize - stream->mappos;

      memcpy(s, &stream->mapped[stream->mappos], len);
      stream->mappos += len;

      return len;
   }
#endif

   return read(stream->fd, s, (size_t)len);

error:
   return -1;
}

int64_t retro_vfs_file_write_impl(libretro_vfs_implementation_file *stream, const void *s, uint64_t len)
{
   if (!stream)
      goto error;

   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
      return fwrite(s, 1, (size_t)len, stream->fp);

#ifdef HAVE_MMAP
   if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
      goto error;
#endif
   return write(stream->fd, s, (size_t)len);

error:
   return -1;
}

int retro_vfs_file_flush_impl(libretro_vfs_implementation_file *stream)
{
   if (!stream)
      return -1;
   return fflush(stream->fp)==0 ? 0 : -1;
}

int retro_vfs_file_remove_impl(const char *path)
{
   char *path_local    = NULL;
   wchar_t *path_wide  = NULL;

   if (!path || !*path)
      return -1;

   (void)path_local;
   (void)path_wide;

#if defined(_WIN32) && !defined(_XBOX)
#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
   path_local = utf8_to_local_string_alloc(path);

   if (path_local)
   {
      int ret = remove(path_local);
      free(path_local);

      if (ret == 0)
         return 0;
   }
#else
   path_wide = utf8_to_utf16_string_alloc(path);

   if (path_wide)
   {
      int ret = _wremove(path_wide);
      free(path_wide);

      if (ret == 0)
         return 0;
   }
#endif
#else
   if (remove(path) == 0)
      return 0;
#endif
   return -1;
}

int retro_vfs_file_rename_impl(const char *old_path, const char *new_path)
{
   char *old_path_local    = NULL;
   char *new_path_local    = NULL;
   wchar_t *old_path_wide  = NULL;
   wchar_t *new_path_wide  = NULL;

   if (!old_path || !*old_path || !new_path || !*new_path)
      return -1;

   (void)old_path_local;
   (void)new_path_local;
   (void)old_path_wide;
   (void)new_path_wide;

#if defined(_WIN32) && !defined(_XBOX)
#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
   old_path_local = utf8_to_local_string_alloc(old_path);
   new_path_local = utf8_to_local_string_alloc(new_path);

   if (old_path_local)
   {
      if (new_path_local)
      {
         int ret = rename(old_path_local, new_path_local);
         free(old_path_local);
         free(new_path_local);
         return ret==0 ? 0 : -1;
      }

      free(old_path_local);
   }

   if (new_path_local)
      free(new_path_local);
#else
   old_path_wide = utf8_to_utf16_string_alloc(old_path);
   new_path_wide = utf8_to_utf16_string_alloc(new_path);

   if (old_path_wide)
   {
      if (new_path_wide)
      {
         int ret = _wrename(old_path_wide, new_path_wide);
         free(old_path_wide);
         free(new_path_wide);
         return ret==0 ? 0 : -1;
      }

      free(old_path_wide);
   }

   if (new_path_wide)
      free(new_path_wide);
#endif
   return -1;
#else
   return rename(old_path, new_path)==0 ? 0 : -1;
#endif
}

const char *retro_vfs_file_get_path_impl(libretro_vfs_implementation_file *stream)
{
   /* should never happen, do something noisy so caller can be fixed */
   if (!stream)
      abort();
   return stream->orig_path;
}
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