FreeCalypso > hg > freecalypso-sw
view rvinterf/asyncshell/parse.c @ 1033:5ab737ac3ad7
TCH special feature documentation update
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 01 Jun 2016 02:06:44 +0000 |
parents | 6eee1e547778 |
children |
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/* * This module implements the parser helper function that allows * the same code to be reused between interactive and one-shot * versions of the same command. */ #include <stdio.h> #include <ctype.h> #include <string.h> #include <strings.h> #include <stdlib.h> parse_interactive_command_into_argv(argstr, argv, min_arg, max_arg, argcp) char *argstr, **argv; int min_arg, max_arg, *argcp; { char *cp, **ap; cp = argstr; for (ap = argv; ; ) { while (isspace(*cp)) cp++; if (!*cp || *cp == '#') break; if (ap - argv >= max_arg) { printf("error: too many arguments\n"); return(-1); } if (*cp == '"') { *ap++ = ++cp; while (*cp && *cp != '"') cp++; if (*cp != '"') { printf("error: unterminated quoted string\n"); return(-1); } *cp++ = '\0'; } else { *ap++ = cp; while (*cp && !isspace(*cp)) cp++; if (*cp) *cp++ = '\0'; } } if (ap - argv < min_arg) { printf("error: too few arguments\n"); return(-1); } *ap = 0; *argcp = ap - argv; return(0); }