Add support for the config and storage API. Bump version to 0.6

source/fs/CFile.cpp

@@ -0,0 +1,175 @@
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <strings.h>
+#include <fs/CFile.hpp>
+
+CFile::CFile() {
+    iFd = -1;
+    mem_file = NULL;
+    filesize = 0;
+    pos = 0;
+}
+
+CFile::CFile(const std::string &filepath, eOpenTypes mode) {
+    iFd = -1;
+    this->open(filepath, mode);
+}
+
+CFile::CFile(const uint8_t *mem, int32_t size) {
+    iFd = -1;
+    this->open(mem, size);
+}
+
+CFile::~CFile() {
+    this->close();
+}
+
+int32_t CFile::open(const std::string &filepath, eOpenTypes mode) {
+    this->close();
+    int32_t openMode = 0;
+
+    // This depend on the devoptab implementation.
+    // see https://github.com/devkitPro/wut/blob/master/libraries/wutdevoptab/devoptab_fs_open.c#L21 fpr reference
+
+    switch (mode) {
+        default:
+        case ReadOnly:   // file must exist
+            openMode = O_RDONLY;
+            break;
+        case WriteOnly: // file will be created / zerod
+            openMode = O_TRUNC | O_CREAT | O_WRONLY;
+            break;
+        case ReadWrite: // file must exist
+            openMode = O_RDWR;
+            break;
+        case Append: // append to file, file will be created if missing. write only
+            openMode = O_CREAT | O_APPEND | O_WRONLY;
+            break;
+    }
+
+    //! Using fopen works only on the first launch as expected
+    //! on the second launch it causes issues because we don't overwrite
+    //! the .data sections which is needed for a normal application to re-init
+    //! this will be added with launching as RPX
+    iFd = ::open(filepath.c_str(), openMode);
+    if (iFd < 0)
+        return iFd;
+
+
+    filesize = ::lseek(iFd, 0, SEEK_END);
+    ::lseek(iFd, 0, SEEK_SET);
+
+    return 0;
+}
+
+int32_t CFile::open(const uint8_t *mem, int32_t size) {
+    this->close();
+
+    mem_file = mem;
+    filesize = size;
+
+    return 0;
+}
+
+void CFile::close() {
+    if (iFd >= 0)
+        ::close(iFd);
+
+    iFd = -1;
+    mem_file = NULL;
+    filesize = 0;
+    pos = 0;
+}
+
+int32_t CFile::read(uint8_t *ptr, size_t size) {
+    if (iFd >= 0) {
+        int32_t ret = ::read(iFd, ptr, size);
+        if (ret > 0)
+            pos += ret;
+        return ret;
+    }
+
+    int32_t readsize = size;
+
+    if (readsize > (int64_t) (filesize - pos))
+        readsize = filesize - pos;
+
+    if (readsize <= 0)
+        return readsize;
+
+    if (mem_file != NULL) {
+        memcpy(ptr, mem_file + pos, readsize);
+        pos += readsize;
+        return readsize;
+    }
+
+    return -1;
+}
+
+int32_t CFile::write(const uint8_t *ptr, size_t size) {
+    if (iFd >= 0) {
+        size_t done = 0;
+        while (done < size) {
+            int32_t ret = ::write(iFd, ptr, size - done);
+            if (ret <= 0)
+                return ret;
+
+            ptr += ret;
+            done += ret;
+            pos += ret;
+        }
+        return done;
+    }
+
+    return -1;
+}
+
+int32_t CFile::seek(long int offset, int32_t origin) {
+    int32_t ret = 0;
+    int64_t newPos = pos;
+
+    if (origin == SEEK_SET) {
+        newPos = offset;
+    } else if (origin == SEEK_CUR) {
+        newPos += offset;
+    } else if (origin == SEEK_END) {
+        newPos = filesize + offset;
+    }
+
+    if (newPos < 0) {
+        pos = 0;
+    } else {
+        pos = newPos;
+    }
+
+    if (iFd >= 0)
+        ret = ::lseek(iFd, pos, SEEK_SET);
+
+    if (mem_file != NULL) {
+        if (pos > filesize) {
+            pos = filesize;
+        }
+    }
+
+    return ret;
+}
+
+int32_t CFile::fwrite(const char *format, ...) {
+    char tmp[512];
+    tmp[0] = 0;
+    int32_t result = -1;
+
+    va_list va;
+    va_start(va, format);
+    if ((vsprintf(tmp, format, va) >= 0)) {
+        result = this->write((uint8_t *) tmp, strlen(tmp));
+    }
+    va_end(va);
+
+
+    return result;
+}
+
+