/*************************************************************************
* (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
* by Michael Pounov <misho@openbsd-bg.org>
*
* $Author: misho $
* $Id: cli.c,v 1.2 2010/03/22 15:21:20 misho Exp $
*
*************************************************************************/
#include "global.h"
/*
* io_Cmd_Exit() Builtin helper function for Exit from Cli
* @cmds = Commands list
* @out = Output handle
* @args = Parsed arguments array
* return: 1 exit from Cli!
*/
int io_Cmd_Exit(void *cmds, FILE *out, char ** __restrict args)
{
return 1;
}
/*
* io_Cmd_Help() Builtin helper function for Help screen
* @cmds = Commands list
* @out = Output handle
* @args = Parsed arguments array
* return: -1 error, 0 = ok
*/
int io_Cmd_Help(void *cmds, FILE *out, char ** __restrict args)
{
register int i;
ioCommands_t *commands = cmds;
if (!cmds)
return -1;
if (!args) {
fprintf(out, "\n");
fflush(out);
for (i = 0; commands[i].cmd_name; i++) {
fprintf(out, "%s\t\t%s\n", commands[i].cmd_name, commands[i].cmd_doc);
fflush(out);
}
} else {
if (!args[1]) {
fprintf(out, "Help screen::\n");
fflush(out);
} else
if (!strncmp(args[1], "---", 3))
return 0;
for (i = 0; commands[i].cmd_name; i++) {
if (args[1] && strcmp(args[1], commands[i].cmd_name))
continue;
fprintf(out, "%s%s\t\t%s\n", args[1] ? "Syntax::\n\t" : "", commands[i].cmd_name,
args[1] ? commands[i].cmd_help : commands[i].cmd_doc);
fflush(out);
}
}
return 0;
}
/*
* io_Cmd_Unsupported() Builtin helper function for unsupported commands
* @cmds = Commands list
* @out = Output handle
* @args = Parsed arguments array
* return: -1 error, 0 = ok, 1 exit from Cli!
*/
int io_Cmd_Unsupported(void *cmds, FILE *out, char ** __restrict args)
{
fprintf(out, "Command %s not supported in this version ...\n", args[0]);
fflush(out);
return 0;
}
// ------------------------------------------------------------
/*
* io_Comp_Filename() Builtin helper function for filename completion arguments
* @text = Text line
* @state = Position state
* return: NULL not found filename, != NULL filename
*/
char *io_Comp_Filename(const char *text, int state)
{
return rl_filename_completion_function(text, state);
}
// ------------------------------------------------------------
#pragma GCC visibility push(hidden)
ioCommands_t io_stdCmds[] = {
{ "test", io_Cmd_Unsupported, "Test - Don`t use default command structure!", "test <cr>", io_Comp_Filename },
{ "-------", NULL, "---------------------", NULL, NULL },
{ "help", io_Cmd_Help, "Help screen", "help [command] <cr>", NULL },
{ "exit", io_Cmd_Exit, "Exit from console", "exit <cr>", NULL },
{ NULL, NULL, NULL, NULL }
};
#pragma GCC visibility pop
// ------------------------------------------------------------
/*
* ioCLIComp() Initialize completion CLI features
* @cmdComplete = Completion function
* @cmdEntry = Compentry function
* return: none
*/
inline void ioCLIComp(io_Completion_t *cmdComplete, io_CompEntry_t *cmdEntry)
{
// command completon
rl_attempted_completion_function = cmdComplete;
rl_completion_entry_function = cmdEntry;
}
/*
* ioCLIExec() Execute CLI main loop
* @cmdList = Commands list
* @out = Output handle
* @csPrompt = Prompt text
* return: -1 error, 0 = exit w/^+D, 1 done.
*/
int ioCLIExec(ioCommands_t *cmdList, FILE *out, const char *csPrompt)
{
char *line, *s, *t, **app, *items[20];
int ret = 0;
register int i;
ioCommands_t *cmd = NULL;
inline int inline_help()
{
io_Cmd_Help(cmdList ? cmdList : io_stdCmds, out, NULL);
rl_on_new_line();
return 0;
}
char **io_stdCompletion(const char *text, int start, int end)
{
register int i;
char **matches = NULL;
char *cmdCompGet(const char *text, int state)
{
int len = strlen(text);
for (i = state; cmdList[i].cmd_name; i++) {
if (strncmp(cmdList[i].cmd_name, "---", 3) &&
!strncmp(cmdList[i].cmd_name, text, len))
return strdup(cmdList[i].cmd_name);
}
return NULL;
}
if (!start)
matches = rl_completion_matches(text, cmdCompGet);
else
for (i = 0; cmdList[i].cmd_name; i++) {
if (!cmdList[i].cmd_comp)
continue;
if (!strncmp(rl_line_buffer, cmdList[i].cmd_name, strlen(cmdList[i].cmd_name)))
matches = rl_completion_matches(text, cmdList[i].cmd_comp);
}
return matches;
}
char *io_stdCompEntry(const char *ignore, int invoking_key)
{
return NULL;
}
rl_bind_key('?', inline_help);
if (!rl_attempted_completion_function)
ioCLIComp(io_stdCompletion, io_stdCompEntry);
do {
line = readline(csPrompt);
if (!line) { // ^+d
fprintf(out, "\n");
fflush(out);
break;
}
// clear whitespaces
for (s = line; isspace(*s); s++);
if (*s) {
for (t = s + strlen(s) - 1; t > s && isspace(*t); t--);
*++t = 0;
}
if (*s) {
add_history(s);
memset(items, 0, sizeof(char*) * 20);
for (app = items; app < items + 19 && (*app = strsep(&s, " \t")); *app ? app++ : app);
/*
for (i = 0; i < 20; i++)
printf("i=%d %s\n", i, items[i]);
*/
// exec_cmd ...
for (cmd = NULL, i = 0; cmdList[i].cmd_name; i++)
if (*items[0] && !strncmp(cmdList[i].cmd_name, items[0], strlen(items[0]))) {
cmd = &cmdList[i];
break;
}
if (!cmd) {
fprintf(out, "Command '%s' not found!\n", items[0]);
fflush(out);
ret = -1;
} else
ret = cmd->cmd_func(cmdList, out, items);
}
free(line);
} while (ret < 1);
return ret;
}
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