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70 lines
1.5 KiB
70 lines
1.5 KiB
#include "utils/sdl_rwops_file_wrapper.hpp" |
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#ifdef DEVILUTIONX_SDL_RWOPS_FILE_WRAPPER_AVAILABLE |
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#include "utils/log.hpp" |
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namespace devilution { |
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extern "C" { |
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#ifdef DEVILUTIONX_SDL_RWOPS_FILE_WRAPPER_IMPL_FOPENCOOKIE |
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ssize_t SDL_RWops_CookieRead(void *cookie, char *buf, size_t nbytes) |
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{ |
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size_t numRead = SDL_RWread(static_cast<SDL_RWops *>(cookie), buf, nbytes, 1); |
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if (numRead == 0) { |
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Log("SDL_RWread error: {} ERROR CODE {}", SDL_GetError(), numRead); |
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} |
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return numRead * nbytes; |
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} |
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int SDL_RWops_CookieSeek(void *cookie, off64_t *pos, int whence) |
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{ |
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int swhence; |
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switch (whence) { |
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case SEEK_SET: |
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swhence = RW_SEEK_SET; |
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break; |
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case SEEK_CUR: |
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swhence = RW_SEEK_CUR; |
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break; |
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case SEEK_END: |
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swhence = RW_SEEK_END; |
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break; |
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default: |
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return -1; |
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} |
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const Sint64 spos = SDL_RWseek(static_cast<SDL_RWops *>(cookie), *pos, swhence); |
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if (spos < 0) { |
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Log("SDL_RWops_RwSeek error: {}", SDL_GetError()); |
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return -1; |
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} |
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*pos = static_cast<off64_t>(spos); |
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return 0; |
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} |
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int SDL_RWops_CookieClose(void *cookie) |
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{ |
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return SDL_RWclose(static_cast<SDL_RWops *>(cookie)); |
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} |
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} // extern "C" |
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#endif |
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FILE *FILE_FromSDL_RWops(SDL_RWops *handle) |
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{ |
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#ifdef DEVILUTIONX_SDL_RWOPS_FILE_WRAPPER_IMPL_FOPENCOOKIE |
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cookie_io_functions_t ioFns; |
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std::memset(&ioFns, 0, sizeof(ioFns)); |
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ioFns.read = &SDL_RWops_CookieRead; |
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ioFns.seek = &SDL_RWops_CookieSeek; |
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ioFns.close = &SDL_RWops_CookieClose; |
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return fopencookie(handle, "rb", ioFns); |
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#else |
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#error "unimplemented" |
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#endif |
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} |
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} // namespace devilution |
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#endif
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