From a013d4e66d2545c04e2599aa2e4a4fc50468153d Mon Sep 17 00:00:00 2001 From: cvpcs Date: Thu, 3 Jun 2010 02:20:07 -0500 Subject: first successful build of bash-4.1 --- builtins/getopts.c | 270 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 270 insertions(+) create mode 100644 builtins/getopts.c (limited to 'builtins/getopts.c') diff --git a/builtins/getopts.c b/builtins/getopts.c new file mode 100644 index 0000000..ce50c1a --- /dev/null +++ b/builtins/getopts.c @@ -0,0 +1,270 @@ +/* getopts.c, created from getopts.def. */ +#line 22 "./getopts.def" + +#line 64 "./getopts.def" + +#include + +#include + +#if defined (HAVE_UNISTD_H) +# ifdef _MINIX +# include +# endif +# include +#endif + +#include "../bashansi.h" + +#include "../shell.h" +#include "common.h" +#include "bashgetopt.h" +#include "getopt.h" + +#define G_EOF -1 +#define G_INVALID_OPT -2 +#define G_ARG_MISSING -3 + +extern char *this_command_name; + +static int getopts_bind_variable __P((char *, char *)); +static int dogetopts __P((int, char **)); + +/* getopts_reset is magic code for when OPTIND is reset. N is the + value that has just been assigned to OPTIND. */ +void +getopts_reset (newind) + int newind; +{ + sh_optind = newind; + sh_badopt = 0; +} + +static int +getopts_bind_variable (name, value) + char *name, *value; +{ + SHELL_VAR *v; + + if (legal_identifier (name)) + { + v = bind_variable (name, value, 0); + return (v && (readonly_p (v) == 0)) ? EXECUTION_SUCCESS : EXECUTION_FAILURE; + } + else + { + sh_invalidid (name); + return (EXECUTION_FAILURE); + } +} + +/* Error handling is now performed as specified by Posix.2, draft 11 + (identical to that of ksh-88). The special handling is enabled if + the first character of the option string is a colon; this handling + disables diagnostic messages concerning missing option arguments + and invalid option characters. The handling is as follows. + + INVALID OPTIONS: + name -> "?" + if (special_error) then + OPTARG = option character found + no error output + else + OPTARG unset + diagnostic message + fi + + MISSING OPTION ARGUMENT; + if (special_error) then + name -> ":" + OPTARG = option character found + else + name -> "?" + OPTARG unset + diagnostic message + fi + */ + +static int +dogetopts (argc, argv) + int argc; + char **argv; +{ + int ret, special_error, old_opterr, i, n; + char strval[2], numval[16]; + char *optstr; /* list of options */ + char *name; /* variable to get flag val */ + char *t; + + if (argc < 3) + { + builtin_usage (); + return (EX_USAGE); + } + + /* argv[0] is "getopts". */ + + optstr = argv[1]; + name = argv[2]; + argc -= 2; + argv += 2; + + special_error = optstr[0] == ':'; + + if (special_error) + { + old_opterr = sh_opterr; + optstr++; + sh_opterr = 0; /* suppress diagnostic messages */ + } + + if (argc > 1) + { + sh_getopt_restore_state (argv); + t = argv[0]; + argv[0] = dollar_vars[0]; + ret = sh_getopt (argc, argv, optstr); + argv[0] = t; + } + else if (rest_of_args == (WORD_LIST *)NULL) + { + for (i = 0; i < 10 && dollar_vars[i]; i++) + ; + + sh_getopt_restore_state (dollar_vars); + ret = sh_getopt (i, dollar_vars, optstr); + } + else + { + register WORD_LIST *words; + char **v; + + for (i = 0; i < 10 && dollar_vars[i]; i++) + ; + for (words = rest_of_args; words; words = words->next, i++) + ; + v = strvec_create (i + 1); + for (i = 0; i < 10 && dollar_vars[i]; i++) + v[i] = dollar_vars[i]; + for (words = rest_of_args; words; words = words->next, i++) + v[i] = words->word->word; + v[i] = (char *)NULL; + sh_getopt_restore_state (v); + ret = sh_getopt (i, v, optstr); + free (v); + } + + if (special_error) + sh_opterr = old_opterr; + + /* Set the OPTIND variable in any case, to handle "--" skipping. It's + highly unlikely that 14 digits will be too few. */ + if (sh_optind < 10) + { + numval[14] = sh_optind + '0'; + numval[15] = '\0'; + i = 14; + } + else + { + numval[i = 15] = '\0'; + n = sh_optind; + do + { + numval[--i] = (n % 10) + '0'; + } + while (n /= 10); + } + bind_variable ("OPTIND", numval + i, 0); + + /* If an error occurred, decide which one it is and set the return + code appropriately. In all cases, the option character in error + is in OPTOPT. If an invalid option was encountered, OPTARG is + NULL. If a required option argument was missing, OPTARG points + to a NULL string (that is, sh_optarg[0] == 0). */ + if (ret == '?') + { + if (sh_optarg == NULL) + ret = G_INVALID_OPT; + else if (sh_optarg[0] == '\0') + ret = G_ARG_MISSING; + } + + if (ret == G_EOF) + { + unbind_variable ("OPTARG"); + getopts_bind_variable (name, "?"); + return (EXECUTION_FAILURE); + } + + if (ret == G_INVALID_OPT) + { + /* Invalid option encountered. */ + ret = getopts_bind_variable (name, "?"); + + if (special_error) + { + strval[0] = (char)sh_optopt; + strval[1] = '\0'; + bind_variable ("OPTARG", strval, 0); + } + else + unbind_variable ("OPTARG"); + + return (ret); + } + + if (ret == G_ARG_MISSING) + { + /* Required argument missing. */ + if (special_error) + { + ret = getopts_bind_variable (name, ":"); + + strval[0] = (char)sh_optopt; + strval[1] = '\0'; + bind_variable ("OPTARG", strval, 0); + } + else + { + ret = getopts_bind_variable (name, "?"); + unbind_variable ("OPTARG"); + } + return (ret); + } + + bind_variable ("OPTARG", sh_optarg, 0); + + strval[0] = (char) ret; + strval[1] = '\0'; + return (getopts_bind_variable (name, strval)); +} + +/* The getopts builtin. Build an argv, and call dogetopts with it. */ +int +getopts_builtin (list) + WORD_LIST *list; +{ + char **av; + int ac, ret; + + if (list == 0) + { + builtin_usage (); + return EX_USAGE; + } + + reset_internal_getopt (); + if (internal_getopt (list, "") != -1) + { + builtin_usage (); + return (EX_USAGE); + } + list = loptend; + + av = make_builtin_argv (list, &ac); + ret = dogetopts (ac, av); + free ((char *)av); + + return (ret); +} -- cgit v1.1