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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libmisc/] [monitor/] [mon-command.c] - Rev 385
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/* * Command parsing routines for RTEMS monitor * * TODO: * * $Id: mon-command.c,v 1.2 2001-09-27 12:01:43 chris Exp $ */ #include <rtems.h> #include <rtems/monitor.h> #include <stdio.h> #include <string.h> /* * make_argv(cp): token-count * Break up the command line in 'cp' into global argv[] and argc (return * value). */ int rtems_monitor_make_argv( char *cp, int *argc_p, char **argv) { int argc = 0; while ((cp = strtok(cp, " \t\n\r"))) { argv[argc++] = cp; cp = (char *) NULL; } argv[argc] = (char *) NULL; /* end of argv */ return *argc_p = argc; } /* * Read and break up a monitor command * * We have to loop on the gets call, since it will return NULL under UNIX * RTEMS when we get a signal (eg: SIGALRM). */ int rtems_monitor_command_read(char *command, int *argc, char **argv) { static char monitor_prompt[32]; /* * put node number in the prompt if we are multiprocessing */ if (!rtems_configuration_get_user_multiprocessing_table()) sprintf(monitor_prompt, "%s", MONITOR_PROMPT); else if (rtems_monitor_default_node != rtems_monitor_node) sprintf(monitor_prompt, "%d-%s-%d", rtems_monitor_node, MONITOR_PROMPT, rtems_monitor_default_node); else sprintf(monitor_prompt, "%d-%s", rtems_monitor_node, MONITOR_PROMPT); #ifdef RTEMS_UNIX /* RTEMS on unix gets so many interrupt system calls this is hosed */ printf("%s> ", monitor_prompt); fflush(stdout); while (gets(command) == (char *) 0) ; #else do { printf("%s> ", monitor_prompt); fflush(stdout); } while (gets(command) == (char *) 0); #endif return rtems_monitor_make_argv(command, argc, argv); } /* * Look up a command in a command table * */ rtems_monitor_command_entry_t * rtems_monitor_command_lookup( rtems_monitor_command_entry_t *table, int argc, char **argv ) { rtems_monitor_command_entry_t *p; rtems_monitor_command_entry_t *abbreviated_match = 0; int abbreviated_matches = 0; char *command; int command_length; command = argv[0]; if ((table == 0) || (command == 0)) goto failed; command_length = strlen(command); for (p = table; p->command; p++) if (STREQ(command, p->command)) /* exact match */ goto done; else if (STRNEQ(command, p->command, command_length)) { abbreviated_matches++; abbreviated_match = p; } /* no perfect match; is there a non-ambigous abbreviated match? */ if ( ! abbreviated_match) { printf("Unrecognized command '%s'; try 'help'\n", command); goto failed; } if (abbreviated_matches > 1) { printf("Command '%s' is ambiguous; try 'help'\n", command); goto failed; } p = abbreviated_match; done: if (p->command_function == 0) goto failed; return p; failed: return 0; } void rtems_monitor_command_usage(rtems_monitor_command_entry_t *table, char *command_string) { rtems_monitor_command_entry_t *help = 0; char *help_command_argv[2]; /* if first entry in table is a usage, then print it out */ if (command_string == 0) { if (STREQ(table->command, "--usage--") && table->usage) help = table; } else { help_command_argv[0] = command_string; help_command_argv[1] = 0; help = rtems_monitor_command_lookup(table, 1, help_command_argv); } if (help) printf("%s\n", help->usage); } void rtems_monitor_help_cmd( int argc, char **argv, unsigned32 command_arg, boolean verbose ) { int arg; rtems_monitor_command_entry_t *command; command = (rtems_monitor_command_entry_t *) command_arg; if (argc == 1) rtems_monitor_command_usage(command, 0); else { for (arg=1; argv[arg]; arg++) rtems_monitor_command_usage(command, argv[arg]); } }
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