GodMode9/arm9/source/filesys/support.c

#include "support.h"
#include "fsutil.h" // only for file selector
#include "vram0.h"
#include "vff.h"

#define SUPPORT_FILE_PATHS  "0:/gm9/support", "1:/gm9/support" // we also check the VRAM TAR first
#define SUPPORT_DIR_PATHS   "V:", "0:/gm9", "1:/gm9"


bool CheckSupportFile(const char* fname)
{
    // try VRAM0 first
    if (FindVTarFileInfo(fname, NULL))
        return true;
    
    // try support file paths
    const char* base_paths[] = { SUPPORT_FILE_PATHS };
    for (u32 i = 0; i < countof(base_paths); i++) {
        char path[256];
        snprintf(path, 256, "%s/%s", base_paths[i], fname);
        if (fvx_stat(path, NULL) == FR_OK)
            return true;
    }
    
    return false;
}

size_t LoadSupportFile(const char* fname, void* buffer, size_t max_len)
{
    // try VRAM0 first
    u64 len64 = 0;
    void* data = FindVTarFileInfo(fname, &len64);
    if (data && len64 && (len64 < max_len)) {
        memcpy(buffer, data, len64);
        return (size_t) len64;
    }
    
    // try support file paths
    const char* base_paths[] = { SUPPORT_FILE_PATHS };
    for (u32 i = 0; i < countof(base_paths); i++) {
        UINT len32;
        char path[256];
        snprintf(path, 256, "%s/%s", base_paths[i], fname);
        if (fvx_qread(path, buffer, 0, max_len, &len32) == FR_OK)
            return len32;
    }
    
    return 0;
}

bool GetSupportDir(char* path, const char* dname)
{
    const char* base_paths[] = { SUPPORT_DIR_PATHS };
    for (u32 i = 0; i < countof(base_paths); i++) {
        FILINFO fno;
        snprintf(path, 256, "%s/%s", base_paths[i], dname);
        if ((fvx_stat(path, &fno) == FR_OK) && (fno.fattrib & AM_DIR))
            return true;
    }
    
    return false;
}

bool CheckSupportDir(const char* dname)
{
    char path[256];
    return GetSupportDir(path, dname);
}

bool FileSelectorSupport(char* result, const char* text, const char* dname, const char* pattern, bool hide_ext, bool no_dirs)
{
    char path[256];
    if (!GetSupportDir(path, dname)) return false;
    return FileSelector(result, text, path, pattern, hide_ext, no_dirs);
}