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added new feature!!!

    1: /*************************************************************************
    2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
    3: *  by Michael Pounov <misho@openbsd-bg.org>
    4: *
    5: * $Author: misho $
    6: * $Id: cli.c,v 1.1.2.1 2010/03/09 12:44:40 misho Exp $
    7: *
    8: *************************************************************************/
    9: #include "global.h"
   10: 
   11: 
   12: static int cmd_exit(void *cmds, FILE *out, char ** __restrict args)
   13: {
   14: 	return 1;
   15: }
   16: 
   17: static int cmd_help(void *cmds, FILE *out, char ** __restrict args)
   18: {
   19: 	register int i;
   20: 	ioCommands_t *commands = cmds;
   21: 
   22: 	if (!cmds)
   23: 		return -1;
   24: 
   25: 	if (!args) {
   26: 		fprintf(out, "\n");
   27: 		for (i = 0; commands[i].cmd_name; i++)
   28: 			fprintf(out, "%s\t\t%s\n", commands[i].cmd_name, commands[i].cmd_doc);
   29: 	} else {
   30: 		if (!args[1])
   31: 			fprintf(out, "Help screen::\n");
   32: 		else
   33: 			if (!strncmp(args[1], "---", 3))
   34: 				return 0;
   35: 
   36: 		for (i = 0; commands[i].cmd_name; i++) {
   37: 			if (args[1] && strcmp(args[1], commands[i].cmd_name))
   38: 				continue;
   39: 
   40: 			fprintf(out, "%s%s\t\t%s\n", args[1] ? "Syntax::\n\t" : "", commands[i].cmd_name, 
   41: 					args[1] ? commands[i].cmd_help : commands[i].cmd_doc);
   42: 		}
   43: 	}
   44: 
   45: 	return 0;
   46: }
   47: 
   48: static int cmd_unsupported(void *cmds, FILE *out, char ** __restrict args)
   49: {
   50: 	fprintf(out, "Command %s not supported in this version ...\n", args[0]);
   51: 	return 0;
   52: }
   53: 
   54: // ------------------------------------------------------------
   55: 
   56: #pragma GCC visibility push(hidden)
   57: 
   58: ioCommands_t io_stdCmds[] = {
   59: 	{ "test", cmd_unsupported, "Test - Don`t use default command structure!", "test <cr>", NULL }, 
   60: 	{ "-------", NULL, "---------------------", NULL, NULL }, 
   61: 	{ "help", cmd_help, "Help screen", "help [command] <cr>", NULL }, 
   62: 	{ "exit", cmd_exit, "Exit from console", "exit <cr>", NULL }, 
   63: 	{ NULL, NULL, NULL, NULL }
   64: };
   65: 
   66: #pragma GCC visibility pop
   67: 
   68: // ------------------------------------------------------------
   69: 
   70: /*
   71:  * ioCLIInit() Initialize CLI features
   72:  * @cmdList = Commands list
   73:  * @out = Output handle
   74:  * @cmdComplete = Completion function
   75:  * @cmdEntry = Compentry function
   76:  * return: none
   77: */
   78: void ioCLIInit(ioCommands_t *cmdList, FILE *out, io_Completion_t *cmdComplete, io_CompEntry_t *cmdEntry)
   79: {
   80: 	ioCommands_t *cmds = cmdList ? cmdList : io_stdCmds;
   81: 
   82: 	inline int inline_help()
   83: 	{
   84: 		cmd_help(cmds, out, NULL);
   85: 		rl_on_new_line();
   86: 		return 0;
   87: 	}
   88: 
   89: 	rl_bind_key('?', inline_help);
   90: 	// command completon
   91: 	rl_attempted_completion_function = cmdComplete;
   92: 	rl_completion_entry_function = cmdEntry;
   93: }
   94: 
   95: /*
   96:  * ioCLIExec() Execute CLI main loop
   97:  * @cmdList = Commands list
   98:  * @out = Output handle
   99:  * @csPrompt = Prompt text
  100:  * return: -1 error, 0 = exit w/^+D, 1 done.
  101: */
  102: int ioCLIExec(ioCommands_t *cmdList, FILE *out, const char *csPrompt)
  103: {
  104: 	char *line, *s, *t, **app, *items[20];
  105: 	int ret = 0;
  106: 	register int i;
  107: 	ioCommands_t *cmd = NULL;
  108: 
  109: 	if (!cmdList)
  110: 		return -1;
  111: 
  112: 	do {
  113: 		line = readline(csPrompt);
  114: 		if (!line) {	// ^+d
  115: 			fprintf(out, "\n");
  116: 			fflush(out);
  117: 			break;
  118: 		}
  119: 		// clear whitespaces
  120: 		for (s = line; isspace(*s); s++);
  121: 		if (*s) {
  122: 			for (t = s + strlen(s) - 1; t > s && isspace(*t); t--);
  123: 			*++t = 0;
  124: 		}
  125: 
  126: 		if (*s) {
  127: 			add_history(s);
  128: 
  129: 			memset(items, 0, sizeof(char*) * 20);
  130: 			for (app = items; app < items + 19 && (*app = strsep(&s, " \t")); *app ? app++ : app);
  131: 
  132: 			/*
  133: 			for (i = 0; i < 20; i++)
  134: 				printf("i=%d %s\n", i, items[i]);
  135: 				*/
  136: 
  137: 			// exec_cmd ...
  138: 			for (cmd = NULL, i = 0; cmdList[i].cmd_name; i++)
  139: 				if (*items[0] && !strncmp(cmdList[i].cmd_name, items[0], strlen(items[0]))) {
  140: 					cmd = &cmdList[i];
  141: 					break;
  142: 				}
  143: 			if (!cmd) {
  144: 				fprintf(out, "Command '%s' not found!\n", items[0]);
  145: 				ret = -1;
  146: 			} else
  147: 				ret = cmd->cmd_func(cmdList, out, items);
  148: 		}
  149: 
  150: 		free(line);
  151: 	} while (ret < 1);
  152: 
  153: 	return ret;
  154: }