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Annotation of qemu/roms/ipxe/src/include/readline/readline.h, revision 1.1

1.1     ! root        1: #ifndef _READLINE_H
        !             2: #define _READLINE_H
        !             3: 
        !             4: /** @file
        !             5:  *
        !             6:  * Minmal readline
        !             7:  *
        !             8:  */
        !             9: 
        !            10: FILE_LICENCE ( GPL2_OR_LATER );
        !            11: 
        !            12: /** A readline history entry */
        !            13: struct readline_history_entry {
        !            14:        /** Persistent copy of string */
        !            15:        char *string;
        !            16:        /** Temporary copy of string
        !            17:         *
        !            18:         * The temporary copy exists only during the call to
        !            19:         * readline().
        !            20:         */
        !            21:        char *temp;
        !            22: };
        !            23: 
        !            24: /** Maximum depth of a readline history buffer
        !            25:  *
        !            26:  * Must be one less than a power of two.
        !            27:  */
        !            28: #define READLINE_HISTORY_MAX_DEPTH ( ( 1 << 3 ) - 1 )
        !            29: 
        !            30: /** A readline history buffer */
        !            31: struct readline_history {
        !            32:        /** History entries
        !            33:         *
        !            34:         * This is a circular buffer, with entries in chronological
        !            35:         * order.  The "next" entry is always empty except during a
        !            36:         * call to readline().
        !            37:         */
        !            38:        struct readline_history_entry entries[READLINE_HISTORY_MAX_DEPTH + 1];
        !            39:        /** Position of next entry within buffer
        !            40:         *
        !            41:         * This is incremented monotonically each time an entry is
        !            42:         * added to the buffer.
        !            43:         */
        !            44:        unsigned int next;
        !            45:        /** Current depth within history buffer
        !            46:         *
        !            47:         * This is valid only during the call to readline()
        !            48:         */
        !            49:        unsigned int depth;
        !            50: };
        !            51: 
        !            52: extern void history_free ( struct readline_history *history );
        !            53: extern char * __malloc readline_history ( const char *prompt,
        !            54:                                          struct readline_history *history );
        !            55: extern char * __malloc readline ( const char *prompt );
        !            56: 
        !            57: #endif /* _READLINE_H */

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