Finish FS_command_default.c

1 files changed, 360 insertions, 0 deletions

diff --git a/arm9/lib/src/FS_command_default.c b/arm9/lib/src/FS_command_default.c
index bd04f740..85287fa9 100644
--- a/arm9/lib/src/FS_command_default.c
+++ b/arm9/lib/src/FS_command_default.c
@@ -3,6 +3,8 @@
 #include "FS_command.h"
 #include "FS_archive.h"
 #include "MI_byteAccess.h"
+#include "MI_memory.h"
+#include "FSi_util.h"
 
 typedef struct
 {
@@ -106,3 +108,361 @@ FSResult FSi_WriteFileCommand(FSFile * p_file)
     p_file->prop.file.pos += len;
     return (*p_arc->write_func)(p_arc, src, pos, len);
 }
+
+FSResult FSi_SeekDirCommand(FSFile * p_dir)
+{
+    FSResult ret;
+    FSArchive *const p_arc = p_dir->arc;
+    const FSDirPos *const arg = &p_dir->arg.seekdir.pos;
+
+    FSArchiveFNT fnt_entry;
+    FSiSyncReadParam param;
+    param.arc = p_arc;
+    param.pos = p_arc->fnt + arg->own_id * sizeof(fnt_entry);
+    ret = FSi_ReadTable(&param, &fnt_entry, sizeof(fnt_entry));
+    if (ret == FS_RESULT_SUCCESS)
+    {
+        p_dir->prop.dir.pos = *arg;
+        if ((arg->index == 0) && (arg->pos == 0))
+        {
+            p_dir->prop.dir.pos.index = fnt_entry.index;
+            p_dir->prop.dir.pos.pos = p_arc->fnt + fnt_entry.start;
+        }
+        p_dir->prop.dir.parent = (u32) (fnt_entry.parent & BIT_MASK(12));
+    }
+    return ret;
+}
+
+FSResult FSi_ReadDirCommand(FSFile *p_dir)
+{
+    FSDirEntry *p_entry = p_dir->arg.readdir.p_entry;
+    FSResult ret;
+
+    FSiSyncReadParam param;
+    param.arc = p_dir->arc;
+    param.pos = p_dir->prop.dir.pos.pos;
+
+    {
+        u8 len;
+        ret = FSi_ReadTable(&param, &len, sizeof(len));
+        if (ret != FS_RESULT_SUCCESS)
+            return ret;
+        p_entry->name_len = (u32)(len & BIT_MASK(7));
+        p_entry->is_directory = (u32)((len >> 7) & 1);
+    }
+    if (p_entry->name_len == 0)
+        return FS_RESULT_FAILURE;
+
+    if (!p_dir->arg.readdir.skip_string)
+    {
+        ret = FSi_ReadTable(&param, p_entry->name, p_entry->name_len);
+        if (ret != FS_RESULT_SUCCESS)
+            return ret;
+        MI_WriteByte((u8 *)p_entry->name + p_entry->name_len, (u8)'\0');
+    }
+    else
+    {
+        param.pos += p_entry->name_len;
+    }
+
+    if (p_entry->is_directory)
+    {
+        u16 id;
+        ret = FSi_ReadTable(&param, &id, sizeof(id));
+        if (ret != FS_RESULT_SUCCESS)
+            return ret;
+        p_entry->dir_id.arc = p_dir->arc;
+        p_entry->dir_id.own_id = (u16)(id & BIT_MASK(12));
+        p_entry->dir_id.index = 0;
+        p_entry->dir_id.pos = 0;
+    }
+    else
+    {
+        p_entry->file_id.arc = p_dir->arc;
+        p_entry->file_id.file_id = p_dir->prop.dir.pos.index;
+        ++p_dir->prop.dir.pos.index;
+    }
+    p_dir->prop.dir.pos.pos = param.pos;
+
+    return ret;
+}
+
+FSResult FSi_FindPathCommand(FSFile *p_dir)
+{
+    const char *path = p_dir->arg.findpath.path;
+    const BOOL is_dir = p_dir->arg.findpath.find_directory;
+    p_dir->arg.seekdir.pos = p_dir->arg.findpath.pos;
+    (void)FSi_TranslateCommand(p_dir, FS_COMMAND_SEEKDIR);
+    for (; MI_ReadByte(path); path += (MI_ReadByte(path) ? 1 : 0))
+    {
+        u32 is_directory;
+        int name_len = 0;
+        while ((is_directory = MI_ReadByte(path + name_len)),
+            (is_directory && !FSi_IsSlash(is_directory)))
+            ++name_len;
+        if (is_directory || is_dir)
+            is_directory = 1;
+        if (name_len == 0)
+        {
+            return FS_RESULT_FAILURE;
+        }
+        else if (MI_ReadByte(path) == '.')
+        {
+            if (name_len == 1)
+            {
+                path += 1;
+                continue;
+            }
+            else if ((name_len == 2) & (MI_ReadByte(path + 1) == '.'))
+            {
+                if (p_dir->prop.dir.pos.own_id != 0)
+                    FSi_SeekDirDirect(p_dir, p_dir->prop.dir.parent);
+                path += 2;
+                continue;
+            }
+        }
+        if (name_len > FS_FILE_NAME_MAX)
+        {
+            return FS_RESULT_FAILURE;
+        }
+        else
+        {
+            FSDirEntry etr;
+            p_dir->arg.readdir.p_entry = &etr;
+            p_dir->arg.readdir.skip_string = FALSE;
+            for (;;)
+            {
+                if (FSi_TranslateCommand(p_dir, FS_COMMAND_READDIR) != FS_RESULT_SUCCESS)
+                    return FS_RESULT_FAILURE;
+                if ((is_directory != etr.is_directory) ||
+                    (name_len != etr.name_len) || FSi_StrNICmp(path, etr.name, (u32)name_len))
+                    continue;
+                if (is_directory)
+                {
+                    path += name_len;
+                    p_dir->arg.seekdir.pos = etr.dir_id;
+                    (void)FSi_TranslateCommand(p_dir, FS_COMMAND_SEEKDIR);
+                    break;
+                }
+                else if (is_dir)
+                {
+                    return FS_RESULT_FAILURE;
+                }
+                else
+                {
+                    *p_dir->arg.findpath.result.file = etr.file_id;
+                    return FS_RESULT_SUCCESS;
+                }
+            }
+        }
+    }
+    if (!is_dir)
+        return FS_RESULT_FAILURE;
+    *p_dir->arg.findpath.result.dir = p_dir->prop.dir.pos;
+    return FS_RESULT_SUCCESS;
+}
+
+FSResult FSi_GetPathCommand(FSFile *p_file)
+{
+    FSArchive *const p_arc = p_file->arc;
+
+    FSGetPathInfo *p_info = &p_file->arg.getpath;
+
+    FSDirEntry entry;
+    FSFile tmp;
+    u32 dir_id;
+    u32 file_id;
+    u32 id;
+    u32 len;
+
+    enum
+    { INVALID_ID = 0x10000 };
+
+    FS_InitFile(&tmp);
+    tmp.arc = p_file->arc;
+
+    if (FS_IsDir(p_file))
+    {
+        dir_id = p_file->prop.dir.pos.own_id;
+        file_id = INVALID_ID;
+    }
+    else
+    {
+        file_id = p_file->prop.file.own_id;
+        if (p_info->total_len != 0)
+        {
+            dir_id = p_info->dir_id;
+        }
+        else
+        {
+            u32 pos = 0;
+            u32 num_dir = 0;
+            dir_id = INVALID_ID;
+            do
+            {
+                FSi_SeekDirDirect(&tmp, pos);
+                if (!pos)
+                    num_dir = tmp.prop.dir.parent;
+                tmp.arg.readdir.p_entry = &entry;
+                tmp.arg.readdir.skip_string = TRUE;
+                while (FSi_TranslateCommand(&tmp, FS_COMMAND_READDIR) == FS_RESULT_SUCCESS)
+                {
+                    if (!entry.is_directory && (entry.file_id.file_id == file_id))
+                    {
+                        dir_id = tmp.prop.dir.pos.own_id;
+                        break;
+                    }
+                }
+            }
+            while ((dir_id == INVALID_ID) && (++pos < num_dir));
+        }
+    }
+    if (dir_id == INVALID_ID)
+    {
+        p_info->total_len = 0;
+        return FS_RESULT_FAILURE;
+    }
+    if (p_info->total_len == 0)
+    {
+        len = 0;
+        if (p_arc->name.pack <= 0x000000FF)
+            len += 1;
+        else if (p_arc->name.pack <= 0x0000FF00)
+            len += 2;
+        else
+            len += 3;
+        len += 1 + 1;
+        if (file_id != INVALID_ID)
+            len += entry.name_len;
+        id = dir_id;
+        if (id != 0)
+        {
+            FSi_SeekDirDirect(&tmp, id);
+            do
+            {
+                FSi_SeekDirDirect(&tmp, tmp.prop.dir.parent);
+                tmp.arg.readdir.p_entry = &entry;
+                tmp.arg.readdir.skip_string = TRUE;
+                while (FSi_TranslateCommand(&tmp, FS_COMMAND_READDIR) == FS_RESULT_SUCCESS)
+                {
+                    if (entry.is_directory && (entry.dir_id.own_id == id))
+                    {
+                        len += entry.name_len + 1;
+                        break;
+                    }
+                }
+                id = tmp.prop.dir.pos.own_id;
+            }
+            while (id != 0);
+        }
+        p_info->total_len = (u16)(len + 1);
+        p_info->dir_id = (u16)dir_id;
+    }
+    if (!p_info->buf)
+        return FS_RESULT_SUCCESS;
+    if (p_info->buf_len < p_info->total_len)
+        return FS_RESULT_FAILURE;
+    else
+    {
+        u8 *dst = p_info->buf;
+        u32 total = p_info->total_len;
+        u32 pos = 0;
+        if (p_arc->name.pack <= 0x000000FF)
+            len = 1;
+        else if (p_arc->name.pack <= 0x0000FF00)
+            len = 2;
+        else
+            len = 3;
+        MI_CpuCopy8(p_arc->name.ptr, dst + pos, len);
+        pos += len;
+        MI_CpuCopy8(":/", dst + pos, 2);
+        pos += 2;
+        id = dir_id;
+        FSi_SeekDirDirect(&tmp, id);
+        if (file_id != INVALID_ID)
+        {
+            tmp.arg.readdir.p_entry = &entry;
+            tmp.arg.readdir.skip_string = FALSE;
+            while (FSi_TranslateCommand(&tmp, FS_COMMAND_READDIR) == FS_RESULT_SUCCESS)
+            {
+                if (!entry.is_directory && (entry.file_id.file_id == file_id))
+                    break;
+            }
+            len = entry.name_len + 1;
+            MI_CpuCopy8(entry.name, dst + total - len, len);
+            total -= len;
+        }
+        else
+        {
+            MI_WriteByte(dst + total - 1, '\0');
+            total -= 1;
+        }
+        if (id != 0)
+        {
+            do
+            {
+                FSi_SeekDirDirect(&tmp, tmp.prop.dir.parent);
+                tmp.arg.readdir.p_entry = &entry;
+                tmp.arg.readdir.skip_string = FALSE;
+                MI_WriteByte(dst + total - 1, '/');
+                total -= 1;
+                while (FSi_TranslateCommand(&tmp, FS_COMMAND_READDIR) == FS_RESULT_SUCCESS)
+                {
+                    if (entry.is_directory && (entry.dir_id.own_id == id))
+                    {
+                        len = entry.name_len;
+                        MI_CpuCopy8(entry.name, dst + total - len, len);
+                        total -= len;
+                        break;
+                    }
+                }
+                id = tmp.prop.dir.pos.own_id;
+            }
+            while (id != 0);
+        }
+    }
+
+    return FS_RESULT_SUCCESS;
+}
+
+FSResult FSi_OpenFileFastCommand(FSFile * p_file)
+{
+    FSArchive *const p_arc = p_file->arc;
+    const FSFileID *p_id = &p_file->arg.openfilefast.id;
+    const u32 index = p_id->file_id;
+    FSResult ret;
+
+    {
+        u32 pos = (u32)(index * sizeof(FSArchiveFAT));
+        if (pos >= p_arc->fat_size)
+            return FS_RESULT_FAILURE;
+        else
+        {
+            FSArchiveFAT fat;
+            FSiSyncReadParam param;
+            param.arc = p_arc;
+            param.pos = p_arc->fat + pos;
+            ret = FSi_ReadTable(&param, &fat, sizeof(fat));
+            if (ret != FS_RESULT_SUCCESS)
+                return ret;
+            p_file->arg.openfiledirect.top = fat.top;
+            p_file->arg.openfiledirect.bottom = fat.bottom;
+            p_file->arg.openfiledirect.index = index;
+            return FSi_TranslateCommand(p_file, FS_COMMAND_OPENFILEDIRECT);
+        }
+    }
+}
+
+FSResult FSi_OpenFileDirectCommand(FSFile * p_file)
+{
+    p_file->prop.file.top = p_file->arg.openfiledirect.top;
+    p_file->prop.file.pos = p_file->arg.openfiledirect.top;
+    p_file->prop.file.bottom = p_file->arg.openfiledirect.bottom;
+    p_file->prop.file.own_id = p_file->arg.openfiledirect.index;
+    return FS_RESULT_SUCCESS;
+}
+
+FSResult FSi_CloseFileCommand(FSFile * p_file)
+{
+    return FS_RESULT_SUCCESS;
+}