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https://github.com/boykopovar/AnyPS5.git
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hypermistandClaude Opus 5.5
4b527adf05
vfscanf, vscanf and scanf scan through the same host path as fscanf; vfwprintf, fwprintf and vwprintf format like wprintf and write to the guest stream; vswscanf and vswscanf_s run the wide scanner on a va_list. The names hash to the NIDs libSceLibcInternal exports. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RbLgECLQ2bpDM7oe2urGZK
115 lines
4.4 KiB
C++
115 lines
4.4 KiB
C++
#include "prx/libc/include/FileStream.hpp"
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#include "prx/libc/include/general/VabiMacros.hpp"
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#include <cstdarg>
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <string>
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extern "C" {
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extern FileStream* __stdinp_nid_postfix;
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int APS5_VABI vfscanf_nid_postfix(FileStream*, const char*, void*);
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int APS5_VABI vscanf_nid_postfix(const char*, void*);
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int APS5_VABI scanf_nid_postfix(const char*, ...);
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int APS5_VABI vfwprintf_nid_postfix(FileStream*, const char16_t*, void*);
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int APS5_VABI fwprintf_nid_postfix(FileStream*, const char16_t*, ...);
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int APS5_VABI vswscanf_nid_postfix(const char16_t*, const char16_t*, void*);
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int APS5_VABI vswscanf_s_nid_postfix(const char16_t*, const char16_t*, void*);
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}
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#ifdef _WIN32
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#define APS5_VA_BEGIN(last) __builtin_sysv_va_list args; __builtin_sysv_va_start(args, last)
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#define APS5_VA_END() __builtin_sysv_va_end(args)
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#else
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#define APS5_VA_BEGIN(last) std::va_list args; va_start(args, last)
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#define APS5_VA_END() va_end(args)
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#endif
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static void Require(bool value, const char* what) {
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if (value) return;
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std::fprintf(stderr, "failed: %s\n", what);
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std::abort();
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}
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static int APS5_VABI ScanStream(FileStream* stream, const char* format, ...) {
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APS5_VA_BEGIN(format);
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const int result = vfscanf_nid_postfix(stream, format, args);
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APS5_VA_END();
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return result;
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}
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static int APS5_VABI ScanInput(const char* format, ...) {
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APS5_VA_BEGIN(format);
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const int result = vscanf_nid_postfix(format, args);
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APS5_VA_END();
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return result;
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}
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static int APS5_VABI PrintWide(FileStream* stream, const char16_t* format, ...) {
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APS5_VA_BEGIN(format);
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const int result = vfwprintf_nid_postfix(stream, format, args);
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APS5_VA_END();
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return result;
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}
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static int APS5_VABI ScanWide(const char16_t* input, const char16_t* format, ...) {
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APS5_VA_BEGIN(format);
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const int result = vswscanf_nid_postfix(input, format, args);
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APS5_VA_END();
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return result;
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}
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static int APS5_VABI ScanWideSized(const char16_t* input, const char16_t* format, ...) {
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APS5_VA_BEGIN(format);
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const int result = vswscanf_s_nid_postfix(input, format, args);
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APS5_VA_END();
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return result;
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}
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static std::string Contents(FileStream& stream) {
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std::fflush(stream.GetHandle());
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std::rewind(stream.GetHandle());
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std::string text;
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for (int c; (c = std::fgetc(stream.GetHandle())) != EOF;) text.push_back(static_cast<char>(c));
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return text;
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}
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int main() {
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FileStream scanned(std::tmpfile());
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Require(std::fputs("42 answer 7", scanned.GetHandle()) >= 0, "seed the scanned stream");
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std::rewind(scanned.GetHandle());
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int number = 0;
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char word[16]{};
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Require(ScanStream(&scanned, "%d %15s", &number, word) == 2, "vfscanf assigns both conversions");
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Require(number == 42 && std::strcmp(word, "answer") == 0, "vfscanf values");
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Require(ScanStream(&scanned, "%d", &number) == 1 && number == 7, "vfscanf continues from the stream position");
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Require(ScanStream(&scanned, "%d", &number) == EOF && number == 7, "vfscanf at end of file");
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scanned.Close();
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FileStream input(std::tmpfile());
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Require(std::fputs("-5 12", input.GetHandle()) >= 0, "seed the standard input stream");
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std::rewind(input.GetHandle());
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FileStream* const standardInput = __stdinp_nid_postfix;
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__stdinp_nid_postfix = &input;
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int first = 0, second = 0;
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Require(ScanInput("%d", &first) == 1 && first == -5, "vscanf reads the guest standard input");
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Require(scanf_nid_postfix("%d", &second) == 1 && second == 12, "scanf reads the guest standard input");
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__stdinp_nid_postfix = standardInput;
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input.Close();
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FileStream written(std::tmpfile());
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Require(fwprintf_nid_postfix(&written, u"%d:%ls|", 7, u"été") == 6, "fwprintf counts wide characters");
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Require(PrintWide(&written, u"%5.1f", 2.25) == 5, "vfwprintf counts wide characters");
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Require(Contents(written) == "7:\xc3\xa9t\xc3\xa9| 2.2", "the stream holds the formatted text");
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written.Close();
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std::int32_t a = 0, b = 0;
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Require(ScanWide(u" 31 -4", u"%d%d", &a, &b) == 2 && a == 31 && b == -4, "vswscanf");
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Require(ScanWide(u"", u"%d", &a) == EOF, "vswscanf on empty input");
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char16_t letters[4]{};
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Require(ScanWideSized(u"abcdef", u"%3ls", letters, 4u) == 1 && std::u16string(letters) == u"abc", "vswscanf_s %ls with a size");
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Require(ScanWideSized(u"abcdef", u"%ls", letters, 4u) == 0 && letters[0] == 0, "vswscanf_s rejects a too small buffer");
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return 0;
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}
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