simpleini.h

iContact v0.75 iContact is designed to be an all-inclusive finger-friendly contact manager for Wind

        NOTE! This structure contains only pointers to strings. The actual
        string data is stored in memory owned by CSimpleIni. Ensure that the
        CSimpleIni object is not destroyed or Reset() while these pointers
        are in use!

        @param a_names          Vector that will receive all of the section
                                names. See note above!
     */
    void GetAllSections(
        TNamesDepend & a_names
        ) const;

    /** Retrieve all unique key names in a section. The collation order of the
        returned strings is NOT DEFINED. Only unique key names are returned.

        NOTE! This structure contains only pointers to strings. The actual
        string data is stored in memory owned by CSimpleIni. Ensure that the
        CSimpleIni object is not destroyed or Reset() while these strings
        are in use!

        @param a_pSection       Section to request data for
        @param a_names          List that will receive all of the key
                                names. See note above!

        @return true            Section was found.
        @return false           Matching section was not found.
     */
    bool GetAllKeys(
        const SI_CHAR * a_pSection,
        TNamesDepend &  a_names
        ) const;

    /** Retrieve all values for a specific key. This method can be used when
        multiple keys are both enabled and disabled.

        NOTE! The returned values are pointers to string data stored in memory
        owned by CSimpleIni. Ensure that the CSimpleIni object is not destroyed
        or Reset while you are using this pointer!

        @param a_pSection       Section to search
        @param a_pKey           Key to search for
        @param a_values         List to return if the key is not found

        @return true            Key was found.
        @return false           Matching section/key was not found.
     */
    bool GetAllValues(
        const SI_CHAR * a_pSection,
        const SI_CHAR * a_pKey,
        TNamesDepend &  a_values
        ) const;

    /** Query the number of keys in a specific section. Note that if multiple
        keys are enabled, then this value may be different to the number of
        keys returned by GetAllKeys.

        @param a_pSection       Section to request data for

        @return -1              Section does not exist in the file
        @return >=0             Number of keys in the section
     */
    int GetSectionSize(
        const SI_CHAR * a_pSection
        ) const;

    /** Retrieve all key and value pairs for a section. The data is returned
        as a pointer to an STL map and can be iterated or searched as
        desired. Note that multiple entries for the same key may exist when
        multiple keys have been enabled.

        NOTE! This structure contains only pointers to strings. The actual
        string data is stored in memory owned by CSimpleIni. Ensure that the
        CSimpleIni object is not destroyed or Reset() while these strings
        are in use!

        @param a_pSection       Name of the section to return
        @return boolean         Was a section matching the supplied
                                name found.
     */
    const TKeyVal * GetSection(
        const SI_CHAR * a_pSection
        ) const;

    /** Retrieve the value for a specific key. If multiple keys are enabled
        (see SetMultiKey) then only the first value associated with that key
        will be returned, see GetAllValues for getting all values with multikey.

        NOTE! The returned value is a pointer to string data stored in memory
        owned by CSimpleIni. Ensure that the CSimpleIni object is not destroyed
        or Reset while you are using this pointer!

        @param a_pSection       Section to search
        @param a_pKey           Key to search for
        @param a_pDefault       Value to return if the key is not found
        @param a_pHasMultiple   Optionally receive notification of if there are
                                multiple entries for this key.

        @return a_pDefault      Key was not found in the section
        @return other           Value of the key
     */
    const SI_CHAR * GetValue(
        const SI_CHAR * a_pSection,
        const SI_CHAR * a_pKey,
        const SI_CHAR * a_pDefault     = NULL,
        bool *          a_pHasMultiple = NULL
        ) const;

    /** Add or update a section or value. This will always insert
        when multiple keys are enabled.

        @param a_pSection   Section to add or update
        @param a_pKey       Key to add or update. Set to NULL to
                            create an empty section.
        @param a_pValue     Value to set. Set to NULL to create an
                            empty section.
        @param a_pComment   Comment to be associated with the section or the
                            key. If a_pKey is NULL then it will be associated
                            with the section, otherwise the key. Note that a
                            comment may be set ONLY when the section or key is
                            first created (i.e. when this function returns the
                            value SI_INSERTED). If you wish to create a section
                            with a comment then you need to create the section
                            separately to the key. The comment string must be
                            in full comment form already (have a comment
                            character starting every line).

        @return SI_Error    See error definitions
        @return SI_UPDATED  Value was updated
        @return SI_INSERTED Value was inserted
     */
    SI_Error SetValue(
        const SI_CHAR * a_pSection,
        const SI_CHAR * a_pKey,
        const SI_CHAR * a_pValue,
        const SI_CHAR * a_pComment = NULL
        )
    {
        return AddEntry(a_pSection, a_pKey, a_pValue, a_pComment, true);
    }

    /** Delete an entire section, or a key from a section. Note that the
        data returned by GetSection is invalid and must not be used after
        anything has been deleted from that section using this method.
        Note when multiple keys is enabled, this will delete all keys with
        that name; there is no way to selectively delete individual key/values
        in this situation.

        @param a_pSection       Section to delete key from, or if
                                a_pKey is NULL, the section to remove.
        @param a_pKey           Key to remove from the section. Set to
                                NULL to remove the entire section.
        @param a_bRemoveEmpty   If the section is empty after this key has
                                been deleted, should the empty section be
                                removed?

        @return true            Key or section was deleted.
        @return false           Key or section was not found.
     */
    bool Delete(
        const SI_CHAR * a_pSection,
        const SI_CHAR * a_pKey,
        bool            a_bRemoveEmpty = false
        );

    /*-----------------------------------------------------------------------*/
    /** @}
        @{ @name Converter */

    /** Return a conversion object to convert text to the same encoding
        as is used by the Save(), SaveFile() and SaveString() functions.
        Use this to prepare the strings that you wish to append or prepend
        to the output INI data.
     */
    Converter GetConverter() const {
        return Converter(m_bStoreIsUtf8);
    }

    /*-----------------------------------------------------------------------*/
    /** @} */

private:
    /** Parse the data looking for a file comment and store it if found.
    */
    SI_Error FindFileComment(
        SI_CHAR *&      a_pData,
        bool            a_bCopyStrings
        );

    /** Parse the data looking for the next valid entry. The memory pointed to
        by a_pData is modified by inserting NULL characters. The pointer is
        updated to the current location in the block of text.
    */
    bool FindEntry(
        SI_CHAR *&  a_pData,
        const SI_CHAR *&  a_pSection,
        const SI_CHAR *&  a_pKey,
        const SI_CHAR *&  a_pVal,
        const SI_CHAR *&  a_pComment
        ) const;

    /** Add the section/key/value to our data.

        @param a_pSection   Section name. Sections will be created if they
                            don't already exist.
        @param a_pKey       Key name. May be NULL to create an empty section.
                            Existing entries will be updated. New entries will
                            be created.
        @param a_pValue     Value for the key.
        @param a_pComment   Comment to be associated with the section or the
                            key. If a_pKey is NULL then it will be associated
                            with the section, otherwise the key. This must be
                            a string in full comment form already (have a
                            comment character starting every line).
        @param a_bCopyStrings   Should copies of the strings be made or not.
                            If false then the pointers will be used as is.
    */
    SI_Error AddEntry(
        const SI_CHAR * a_pSection,
        const SI_CHAR * a_pKey,
        const SI_CHAR * a_pValue,
        const SI_CHAR * a_pComment,
        bool            a_bCopyStrings
        );

    /** Is the supplied character a whitespace character? */
    inline bool IsSpace(SI_CHAR ch) const {
        return (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n');
    }

    /** Does the supplied character start a comment line? */
    inline bool IsComment(SI_CHAR ch) const {
        return (ch == ';' || ch == '#');
    }


    /** Skip over a newline character (or characters) for either DOS or UNIX */
    inline void SkipNewLine(SI_CHAR *& a_pData) const {
        a_pData += (*a_pData == '\r' && *(a_pData+1) == '\n') ? 2 : 1;
    }

    /** Make a copy of the supplied string, replacing the original pointer */
    SI_Error CopyString(const SI_CHAR *& a_pString);

    /** Delete a string from the copied strings buffer if necessary */
    void DeleteString(const SI_CHAR * a_pString);

    /** Internal use of our string comparison function */
    bool IsLess(const SI_CHAR * a_pLeft, const SI_CHAR * a_pRight) const {
        const static SI_STRLESS isLess = SI_STRLESS();
        return isLess(a_pLeft, a_pRight);
    }

    bool IsMultiLineTag(const SI_CHAR * a_pData) const;
    bool IsMultiLineData(const SI_CHAR * a_pData) const;
    bool LoadMultiLineText(
        SI_CHAR *&          a_pData,
        const SI_CHAR *&    a_pVal,
        const SI_CHAR *     a_pTagName,
        bool                a_bAllowBlankLinesInComment = false
        ) const;
    bool IsNewLineChar(SI_CHAR a_c) const;

    bool OutputMultiLineText(
        OutputWriter &  a_oOutput,
        Converter &     a_oConverter,
        const SI_CHAR * a_pText
        ) const;

private:
    /** Copy of the INI file data in our character format. This will be
        modified when parsed to have NULL characters added after all
        interesting string entries. All of the string pointers to sections,
        keys and values point into this block of memory.
     */
    SI_CHAR * m_pData;

    /** Length of the data that we have stored. Used when deleting strings
        to determine if the string is stored here or in the allocated string
        buffer.
     */
    size_t m_uDataLen;

    /** File comment for this data, if one exists. */
    const SI_CHAR * m_pFileComment;

    /** Parsed INI data. Section -> (Key -> Value). */
    TSection m_data;

    /** This vector stores allocated memory for copies of strings that have
        been supplied after the file load. It will be empty unless SetValue()
        has been called.
     */
    TNamesDepend m_strings;

    /** Is the format of our datafile UTF-8 or MBCS? */
    bool m_bStoreIsUtf8;

    /** Are multiple values permitted for the same key? */
    bool m_bAllowMultiKey;

    /** Are data values permitted to span multiple lines? */
    bool m_bAllowMultiLine;

    /** Next order value, used to ensure sections and keys are output in the
        same order that they are loaded/added.
     */
    int m_nOrder;
};

// ---------------------------------------------------------------------------
//                                  IMPLEMENTATION
// ---------------------------------------------------------------------------

template<class SI_CHAR, class SI_STRLESS, class SI_CONVERTER>
CSimpleIniTempl<SI_CHAR,SI_STRLESS,SI_CONVERTER>::CSimpleIniTempl(
    bool a_bIsUtf8,
    bool a_bAllowMultiKey,
    bool a_bAllowMultiLine
    )
  : m_pData(0)
  , m_uDataLen(0)
  , m_pFileComment(NULL)
  , m_bStoreIsUtf8(a_bIsUtf8)
  , m_bAllowMultiKey(a_bAllowMultiKey)
  , m_bAllowMultiLine(a_bAllowMultiLine)
  , m_nOrder(0)
{ }

template<class SI_CHAR, class SI_STRLESS, class SI_CONVERTER>
CSimpleIniTempl<SI_CHAR,SI_STRLESS,SI_CONVERTER>::~CSimpleIniTempl()
{
    Reset();
}

template<class SI_CHAR, class SI_STRLESS, class SI_CONVERTER>
void
CSimpleIniTempl<SI_CHAR,SI_STRLESS,SI_CONVERTER>::Reset()
{
    // remove all data
    delete[] m_pData;
    m_pData = NULL;
    m_uDataLen = 0;
    m_pFileComment = NULL;
    if (!m_data.empty()) {
        m_data.erase(m_data.begin(), m_data.end());
    }

    // remove all strings
    if (!m_strings.empty()) {
        typename TNamesDepend::iterator i = m_strings.begin();
        for (; i != m_strings.end(); ++i) {
            delete[] const_cast<SI_CHAR*>(i->pItem);
        }
        m_strings.erase(m_strings.begin(), m_strings.end());
    }
}

template<class SI_CHAR, class SI_STRLESS, class SI_CONVERTER>
SI_Error
CSimpleIniTempl<SI_CHAR,SI_STRLESS,SI_CONVERTER>::LoadFile(
    const char * a_pszFile
    )
{
    FILE * fp = NULL;