StandardFilesystem Class Reference

#include <filesystem_stdc.h>

Inheritance diagram for StandardFilesystem:

Collaboration diagram for StandardFilesystem:

Public Member Functions
CharBuffer *	ListDirectory (const char *path)
CharBuffer *	LoadTextFile (const char *name)
bool	SaveTextFile (const char *name, const char *text)
Public Member Functions inherited from FilesystemBase
virtual	~FilesystemBase ()

Static Private Attributes
static const int	blocksize = 512

Detailed Description

Definition at line 46 of file filesystem_stdc.h.

Member Function Documentation

ListDirectory()

CharBuffer * StandardFilesystem::ListDirectory ( const char *  path )

virtual

Implements FilesystemBase.

Definition at line 47 of file filesystem_stdc.cpp.

References CharBuffer::Append(), CharBuffer::CharBuffer(), CharBuffer::Empty(), CharBuffer::EnsureGrowth(), CharBuffer::EnsureSize(), CharBuffer::GetString(), StrIsEqual(), and StrLen().

{
#if defined(UNIX) || defined(HAIKU)
    CharBuffer *pathbuf = new CharBuffer();
    pathbuf->Empty();
    if (path == nullptr) {
        pathbuf->Append(".");
    } else {
        pathbuf->EnsureSize(StrLen(path) + 1);
        pathbuf->Append(path);
    }

    DIR *dir;
    if ((dir = opendir(pathbuf->GetString())) == nullptr) {
        CharBuffer *res = new CharBuffer();
        const char *msg = MSGNODIR;
        res->EnsureSize(StrLen(msg) + StrLen(pathbuf->GetString()) + StrLen(NEWLINE) + 1);
        res->Empty();
        res->Append(msg);
        res->Append(pathbuf->GetString());
        res->Append(NEWLINE);

        delete pathbuf;
        return res;
    }

    CharBuffer *lines = new CharBuffer();
    lines->Empty();

    bool first = true;
    struct dirent *entry;
    while ((entry = readdir(dir)) != nullptr) {
        if (StrIsEqual(entry->d_name, ".") || StrIsEqual(entry->d_name, "..")) {
            continue;
        }

        if (first) {
            const char *header = TXTLISTDIRHEADER;
            lines->EnsureSize(StrLen(header) + 1);
            lines->Empty();
            lines->Append(header);
            first = false;
        }

        const char *type;

#if defined(HAIKU)
        type = TXTLISTDIRTUNKNOWN;
#else
        switch (entry->d_type) {
        case DT_REG:
            type = TXTLISTDIRTFILE;
            break;
        case DT_DIR:
            type = TXTLISTDIRTDIR;
            break;
        default:
            type = TXTLISTDIRTUNKNOWN;
        }
#endif

        const unsigned short colsize = 12;
        unsigned int a = StrLen(type) > colsize ? colsize : StrLen(type);
        unsigned int b = colsize - a;

        lines->EnsureGrowth(colsize + StrLen(entry->d_name) + StrLen(NEWLINE) + 1);
        lines->Append(type);
        lines->Append(' ', b);
        lines->Append(entry->d_name);
        lines->Append(NEWLINE);
    }

    closedir(dir);
    delete pathbuf;
    return lines;
#else
    CharBuffer* lines = new CharBuffer();
    lines->Empty();
    return lines;
#endif
}

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LoadTextFile()

CharBuffer * StandardFilesystem::LoadTextFile ( const char *  name )

virtual

Implements FilesystemBase.

Definition at line 129 of file filesystem_stdc.cpp.

References CharBuffer::Append(), blocksize, CharBuffer::CharBuffer(), CharBuffer::Empty(), and CharBuffer::EnsureSize().

{
    FILE* file;

#if !defined(WINDOWS)
    file = fopen(name, "r");
#else
    fopen_s(&file, name, "r");
#endif

    if (!file)
        return nullptr;

    CharBuffer* text = new CharBuffer();
    text->Empty();

    int blocks = 0;
    bool eof = false;

    while (!eof)
    {
        blocks++;
        text->EnsureSize(blocksize, blocks);
        int count = 0;

        do
        {
            int c = fgetc(file);
            eof = c == EOF;

            if (!eof)
            {
                text->Append(static_cast<char>(c));
                count++;
            }
        }
        while (!eof && count < blocksize);
    }

    fclose(file);
    return text;
}

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SaveTextFile()

bool StandardFilesystem::SaveTextFile ( const char *  name, const char *  text  )

virtual

Implements FilesystemBase.

Definition at line 172 of file filesystem_stdc.cpp.

{
    FILE* file;

#if !defined(WINDOWS)
    file = fopen(name, "w");
#else
    fopen_s(&file, name, "w");
#endif

    if (!file)
    {
        return false;
    }

    char* i = const_cast<char*>(text);
    int r = EOF + 11;
    while (r != EOF && *i)
    {
        r = fputc(*i++, file);
    }

    fclose(file);
    return true;
}

Member Data Documentation

blocksize

const int StandardFilesystem::blocksize = 512

staticprivate

Definition at line 54 of file filesystem_stdc.h.

Referenced by LoadTextFile().

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The documentation for this class was generated from the following files:

• src/system/filesystem_stdc.h
• src/system/filesystem_stdc.cpp