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https://git.code.sf.net/p/fuse-emulator/fuse
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104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/* command.c: Parse a debugger command
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Copyright (c) 2002-2015 Philip Kendall
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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Author contact information:
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E-mail: philip-fuse@shadowmagic.org.uk
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*/
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#include "config.h"
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include "debugger.h"
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#include "debugger_internals.h"
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#include "mempool.h"
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#include "ui/ui.h"
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#include "utils.h"
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#include "z80/z80.h"
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#include "z80/z80_macros.h"
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/* The last debugger command we were given to execute */
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static char *command_buffer = NULL;
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/* And a pointer as to how much we've parsed */
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static char *command_ptr;
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int yyparse( void );
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int yywrap( void );
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/* Evaluate the debugger command given in 'command' */
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void
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debugger_command_evaluate( const char *command )
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{
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if( !command ) return;
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if( command_buffer ) libspectrum_free( command_buffer );
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command_buffer = utils_safe_strdup( command );
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/* Start parsing at the start of the given command */
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command_ptr = command_buffer;
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/* Parse the command */
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yyparse();
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/* And free any memory we allocated while parsing */
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mempool_free( debugger_memory_pool );
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ui_debugger_update();
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}
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/* Utility functions called from the flex scanner */
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int
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yywrap( void )
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{
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return 1;
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}
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/* Called to get up to 'max_size' bytes of the command to be parsed */
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int
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debugger_command_input( char *buf, int *result, int max_size )
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{
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size_t length = strlen( command_ptr );
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if( !length ) {
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return 0;
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} else if( length < (size_t)max_size ) {
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memcpy( buf, command_ptr, length );
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*result = length; command_ptr += length;
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return 1;
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} else {
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memcpy( buf, command_ptr, max_size );
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*result = max_size; command_ptr += max_size;
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return 1;
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}
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}
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/* Utility functions called by the bison parser */
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/* The error callback if yyparse finds an error */
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void
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yyerror( const char *s )
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{
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ui_error( UI_ERROR_ERROR, "Invalid debugger command: %s", s );
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}
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