#include <ctype.h>
#include <string.h>
#include <stddef.h>
+#include <unistd.h>
#include <sys/param.h>
#include <assert.h>
+#include <config.h>
+#ifdef HAVE_LIBREADLINE
#define READLINE_LIBRARY
#include <readline/readline.h>
extern void using_history(void);
extern void stifle_history(int);
extern void add_history(char *);
+#endif
#include "parser.h"
-#define CMD_COMPLETE 0
-#define CMD_INCOMPLETE 1
-#define CMD_NONE 2
-#define CMD_AMBIG 3
static command_t * top_level; /* Top level of commands, initialized by
* InitParser */
-static command_t * match_tbl; /* Command completion against this table */
static char * parser_prompt = NULL;/* Parser prompt, set by InitParser */
static int done; /* Set to 1 if user types exit or quit */
}
/* find a command -- return it if unique otherwise print alternatives */
-
static command_t *Parser_findargcmd(char *name, command_t cmds[])
{
command_t *cmd;
- int i;
-
- for (i = 0; cmds[i].pc_name; i++) {
- cmd = &cmds[i];
-
- if (strlen(name) != strlen(cmd->pc_name))
- continue;
-
- if (strlen(name) == strlen(cmd->pc_name)) {
- if (strcmp(name, cmd->pc_name) == 0)
- return cmd;
- else
- continue;
- }
+ for (cmd = cmds; cmd->pc_name; cmd++) {
+ if (strcmp(name, cmd->pc_name) == 0)
+ return cmd;
}
return NULL;
}
int Parser_execarg(int argc, char **argv, command_t cmds[])
{
command_t *cmd;
- int i;
cmd = Parser_findargcmd(argv[0], cmds);
if ( cmd ) {
return (cmd->pc_func)(argc, argv);
} else {
- printf("Try interactive use without arguments or use one of: ");
- for (i=0 ; cmds[i].pc_name ; i++) {
- cmd = &cmds[i];
+ printf("Try interactive use without arguments or use one of:\n");
+ for (cmd = cmds; cmd->pc_name; cmd++)
printf("\"%s\" ", cmd->pc_name);
- }
- printf("as argument.\n");
+ printf("\nas argument.\n");
}
return -1;
}
}
}
-static char * command_generator(const char * text, int state)
+#ifdef HAVE_LIBREADLINE
+static command_t * match_tbl; /* Command completion against this table */
+
+static char * command_generator(const char * text, int state)
{
static int index,
len;
char *name;
/* Do we have a match table? */
- if (!match_tbl)
+ if (!match_tbl)
return NULL;
-
+
/* If this is the first time called on this word, state is 0 */
if (!state) {
index = 0;
len = (int)strlen(text);
}
- /* Return the next name in the command list that paritally matches test */
+ /* Return next name in the command list that paritally matches test */
while ( (name = (match_tbl + index)->pc_name) ) {
index++;
}
/* probably called by readline */
-static char **command_completion(char * text, int start, int end)
+static char **command_completion(char * text, int start, int end)
{
command_t * table;
char * pos;
return(completion_matches(text, command_generator));
}
+#endif
/* take a string and execute the function or print help */
int execute_line(char * line)
case CMD_COMPLETE:
i = line2args(line, argv, MAXARGS);
rc = (cmd->pc_func)(i, argv);
+
+ if (rc == CMD_HELP)
+ fprintf(stderr, "%s\n", cmd->pc_help);
+
break;
}
-
+
return rc;
}
-/* this is the command execution machine */
-int Parser_commands(void)
+int
+noop_fn ()
{
- char *line, *s;
- int rc = 0;
+ return (0);
+}
+
+/* just in case you're ever in an airplane and discover you
+ forgot to install readline-dev. :) */
+int init_input()
+{
+ int interactive = isatty (fileno (stdin));
+#ifdef HAVE_LIBREADLINE
using_history();
stifle_history(HISTORY);
- rl_attempted_completion_function =
- (CPPFunction *)command_completion;
+ if (!interactive)
+ {
+ rl_prep_term_function = (rl_vintfunc_t *)noop_fn;
+ rl_deprep_term_function = (rl_voidfunc_t *)noop_fn;
+ }
+
+ rl_attempted_completion_function = (CPPFunction *)command_completion;
rl_completion_entry_function = (void *)command_generator;
-
+#endif
+ return interactive;
+}
+
+#ifndef HAVE_LIBREADLINE
+#define add_history(s)
+char * readline(char * prompt)
+{
+ char line[2048];
+ int n;
+ char * ret = NULL;
+ if (prompt)
+ printf ("%s", prompt);
+ fgets(line, sizeof(line), stdin);
+ n = strlen(line);
+ if (n && line[n-1] == '\n')
+ line[--n] = '\0';
+ if (n == 0 && feof(stdin)) {
+ ret = NULL;
+ } else
+ ret = strdup(line);
+ return ret;
+}
+#endif
+
+/* this is the command execution machine */
+int Parser_commands(void)
+{
+ char *line, *s;
+ int rc = 0;
+ int interactive;
+
+ interactive = init_input();
+
while(!done) {
- line = readline(parser_prompt);
+ line = readline(interactive ? parser_prompt : NULL);
if (!line) break;
}
-
void Parser_qhelp(int argc, char *argv[]) {
printf("Available commands are:\n");
-
+
print_commands(NULL, top_level);
printf("For more help type: help command-name\n");
}
return 0;
}
+
+void Parser_printhelp(char *cmd)
+{
+ char *argv[] = { "help", cmd };
+ Parser_help(2, argv);
+}
+
+
/*************************************************************************
* COMMANDS *
*************************************************************************/
char *Parser_strarg(char *inp, const char *prompt, const char *deft,
char *answer, int len)
{
-
if ( inp == NULL || *inp == '\0' ) {
return Parser_getstr(prompt, deft, answer, len);
} else
return 1;
}
+/* Convert human readable size string to and int; "1k" -> 1000 */
+int Parser_size (int *sizep, char *str) {
+ int size;
+ char mod[32];
+
+ switch (sscanf (str, "%d%1[gGmMkK]", &size, mod)) {
+ default:
+ return (-1);
+
+ case 1:
+ *sizep = size;
+ return (0);
+
+ case 2:
+ switch (*mod) {
+ case 'g':
+ case 'G':
+ *sizep = size << 30;
+ return (0);
+
+ case 'm':
+ case 'M':
+ *sizep = size << 20;
+ return (0);
+
+ case 'k':
+ case 'K':
+ *sizep = size << 10;
+ return (0);
+
+ default:
+ *sizep = size;
+ return (0);
+ }
+ }
+}
+
+/* Convert a string boolean to an int; "enable" -> 1 */
+int Parser_bool (int *b, char *str) {
+ if (!strcasecmp (str, "no") ||
+ !strcasecmp (str, "n") ||
+ !strcasecmp (str, "off") ||
+ !strcasecmp (str, "disable"))
+ {
+ *b = 0;
+ return (0);
+ }
+
+ if (!strcasecmp (str, "yes") ||
+ !strcasecmp (str, "y") ||
+ !strcasecmp (str, "on") ||
+ !strcasecmp (str, "enable"))
+ {
+ *b = 1;
+ return (0);
+ }
+
+ return (-1);
+}
+
int Parser_quit(int argc, char **argv)
{
argc = argc;
argv = argv;
- done = 1;
+ done = 1;
return 0;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff