diff options
Diffstat (limited to 'source/Host/common/GetOptInc.cpp')
-rw-r--r-- | source/Host/common/GetOptInc.cpp | 717 |
1 files changed, 348 insertions, 369 deletions
diff --git a/source/Host/common/GetOptInc.cpp b/source/Host/common/GetOptInc.cpp index 7689f36c8154..1d9b31743736 100644 --- a/source/Host/common/GetOptInc.cpp +++ b/source/Host/common/GetOptInc.cpp @@ -1,6 +1,16 @@ +//===-- GetOptInc.cpp -------------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + #include "lldb/Host/common/GetOptInc.h" -#if defined(REPLACE_GETOPT) || defined(REPLACE_GETOPT_LONG) || defined(REPLACE_GETOPT_LONG_ONLY) +#if defined(REPLACE_GETOPT) || defined(REPLACE_GETOPT_LONG) || \ + defined(REPLACE_GETOPT_LONG_ONLY) // getopt.cpp #include <errno.h> @@ -8,32 +18,32 @@ #include <string.h> #if defined(REPLACE_GETOPT) -int opterr = 1; /* if error message should be printed */ -int optind = 1; /* index into parent argv vector */ -int optopt = '?'; /* character checked for validity */ -int optreset; /* reset getopt */ -char *optarg; /* argument associated with option */ +int opterr = 1; /* if error message should be printed */ +int optind = 1; /* index into parent argv vector */ +int optopt = '?'; /* character checked for validity */ +int optreset; /* reset getopt */ +char *optarg; /* argument associated with option */ #endif #define PRINT_ERROR ((opterr) && (*options != ':')) -#define FLAG_PERMUTE 0x01 /* permute non-options to the end of argv */ -#define FLAG_ALLARGS 0x02 /* treat non-options as args to option "-1" */ -#define FLAG_LONGONLY 0x04 /* operate as getopt_long_only */ +#define FLAG_PERMUTE 0x01 /* permute non-options to the end of argv */ +#define FLAG_ALLARGS 0x02 /* treat non-options as args to option "-1" */ +#define FLAG_LONGONLY 0x04 /* operate as getopt_long_only */ /* return values */ -#define BADCH (int)'?' -#define BADARG ((*options == ':') ? (int)':' : (int)'?') -#define INORDER (int)1 +#define BADCH (int)'?' +#define BADARG ((*options == ':') ? (int)':' : (int)'?') +#define INORDER (int)1 -#define EMSG "" +#define EMSG "" -static int getopt_internal(int, char * const *, const char *, - const struct option *, int *, int); -static int parse_long_options(char * const *, const char *, - const struct option *, int *, int); +static int getopt_internal(int, char *const *, const char *, + const struct option *, int *, int); +static int parse_long_options(char *const *, const char *, + const struct option *, int *, int); static int gcd(int, int); -static void permute_args(int, int, int, char * const *); +static void permute_args(int, int, int, char *const *); static const char *place = EMSG; /* option letter processing */ @@ -44,19 +54,17 @@ static int nonopt_end = -1; /* first option after non options (for permute) */ /* * Compute the greatest common divisor of a and b. */ -static int -gcd(int a, int b) -{ - int c; +static int gcd(int a, int b) { + int c; + c = a % b; + while (c != 0) { + a = b; + b = c; c = a % b; - while (c != 0) { - a = b; - b = c; - c = a % b; - } + } - return (b); + return (b); } static void pass() {} @@ -67,36 +75,34 @@ static void pass() {} * from nonopt_end to opt_end (keeping the same order of arguments * in each block). */ -static void -permute_args(int panonopt_start, int panonopt_end, int opt_end, -char * const *nargv) -{ - int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos; - char *swap; - - /* - * compute lengths of blocks and number and size of cycles - */ - nnonopts = panonopt_end - panonopt_start; - nopts = opt_end - panonopt_end; - ncycle = gcd(nnonopts, nopts); - cyclelen = (opt_end - panonopt_start) / ncycle; - - for (i = 0; i < ncycle; i++) { - cstart = panonopt_end + i; - pos = cstart; - for (j = 0; j < cyclelen; j++) { - if (pos >= panonopt_end) - pos -= nnonopts; - else - pos += nopts; - swap = nargv[pos]; - /* LINTED const cast */ - ((char **)nargv)[pos] = nargv[cstart]; - /* LINTED const cast */ - ((char **)nargv)[cstart] = swap; - } +static void permute_args(int panonopt_start, int panonopt_end, int opt_end, + char *const *nargv) { + int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos; + char *swap; + + /* + * compute lengths of blocks and number and size of cycles + */ + nnonopts = panonopt_end - panonopt_start; + nopts = opt_end - panonopt_end; + ncycle = gcd(nnonopts, nopts); + cyclelen = (opt_end - panonopt_start) / ncycle; + + for (i = 0; i < ncycle; i++) { + cstart = panonopt_end + i; + pos = cstart; + for (j = 0; j < cyclelen; j++) { + if (pos >= panonopt_end) + pos -= nnonopts; + else + pos += nopts; + swap = nargv[pos]; + /* LINTED const cast */ + ((char **)nargv)[pos] = nargv[cstart]; + /* LINTED const cast */ + ((char **)nargv)[cstart] = swap; } + } } /* @@ -104,318 +110,297 @@ char * const *nargv) * Parse long options in argc/argv argument vector. * Returns -1 if short_too is set and the option does not match long_options. */ -static int -parse_long_options(char * const *nargv, const char *options, -const struct option *long_options, int *idx, int short_too) -{ - char *current_argv, *has_equal; - size_t current_argv_len; - int i, match; - - current_argv = const_cast<char*>(place); - match = -1; - - optind++; - - if ((has_equal = strchr(current_argv, '=')) != NULL) { - /* argument found (--option=arg) */ - current_argv_len = has_equal - current_argv; - has_equal++; +static int parse_long_options(char *const *nargv, const char *options, + const struct option *long_options, int *idx, + int short_too) { + char *current_argv, *has_equal; + size_t current_argv_len; + int i, match; + + current_argv = const_cast<char *>(place); + match = -1; + + optind++; + + if ((has_equal = strchr(current_argv, '=')) != NULL) { + /* argument found (--option=arg) */ + current_argv_len = has_equal - current_argv; + has_equal++; + } else + current_argv_len = strlen(current_argv); + + for (i = 0; long_options[i].name; i++) { + /* find matching long option */ + if (strncmp(current_argv, long_options[i].name, current_argv_len)) + continue; + + if (strlen(long_options[i].name) == current_argv_len) { + /* exact match */ + match = i; + break; + } + /* + * If this is a known short option, don't allow + * a partial match of a single character. + */ + if (short_too && current_argv_len == 1) + continue; + + if (match == -1) /* partial match */ + match = i; + else { + /* ambiguous abbreviation */ + if (PRINT_ERROR) + warnx(ambig, (int)current_argv_len, current_argv); + optopt = 0; + return (BADCH); + } + } + if (match != -1) { /* option found */ + if (long_options[match].has_arg == no_argument && has_equal) { + if (PRINT_ERROR) + warnx(noarg, (int)current_argv_len, current_argv); + /* + * XXX: GNU sets optopt to val regardless of flag + */ + if (long_options[match].flag == NULL) + optopt = long_options[match].val; + else + optopt = 0; + return (BADARG); } - else - current_argv_len = strlen(current_argv); - - for (i = 0; long_options[i].name; i++) { - /* find matching long option */ - if (strncmp(current_argv, long_options[i].name, - current_argv_len)) - continue; - - if (strlen(long_options[i].name) == current_argv_len) { - /* exact match */ - match = i; - break; - } + if (long_options[match].has_arg == required_argument || + long_options[match].has_arg == optional_argument) { + if (has_equal) + optarg = has_equal; + else if (long_options[match].has_arg == required_argument) { /* - * If this is a known short option, don't allow - * a partial match of a single character. + * optional argument doesn't use next nargv */ - if (short_too && current_argv_len == 1) - continue; - - if (match == -1) /* partial match */ - match = i; - else { - /* ambiguous abbreviation */ - if (PRINT_ERROR) - warnx(ambig, (int)current_argv_len, - current_argv); - optopt = 0; - return (BADCH); - } - } - if (match != -1) { /* option found */ - if (long_options[match].has_arg == no_argument - && has_equal) { - if (PRINT_ERROR) - warnx(noarg, (int)current_argv_len, - current_argv); - /* - * XXX: GNU sets optopt to val regardless of flag - */ - if (long_options[match].flag == NULL) - optopt = long_options[match].val; - else - optopt = 0; - return (BADARG); - } - if (long_options[match].has_arg == required_argument || - long_options[match].has_arg == optional_argument) { - if (has_equal) - optarg = has_equal; - else if (long_options[match].has_arg == - required_argument) { - /* - * optional argument doesn't use next nargv - */ - optarg = nargv[optind++]; - } - } - if ((long_options[match].has_arg == required_argument) - && (optarg == NULL)) { - /* - * Missing argument; leading ':' indicates no error - * should be generated. - */ - if (PRINT_ERROR) - warnx(recargstring, - current_argv); - /* - * XXX: GNU sets optopt to val regardless of flag - */ - if (long_options[match].flag == NULL) - optopt = long_options[match].val; - else - optopt = 0; - --optind; - return (BADARG); - } + optarg = nargv[optind++]; + } } - else { /* unknown option */ - if (short_too) { - --optind; - return (-1); - } - if (PRINT_ERROR) - warnx(illoptstring, current_argv); + if ((long_options[match].has_arg == required_argument) && + (optarg == NULL)) { + /* + * Missing argument; leading ':' indicates no error + * should be generated. + */ + if (PRINT_ERROR) + warnx(recargstring, current_argv); + /* + * XXX: GNU sets optopt to val regardless of flag + */ + if (long_options[match].flag == NULL) + optopt = long_options[match].val; + else optopt = 0; - return (BADCH); + --optind; + return (BADARG); } - if (idx) - *idx = match; - if (long_options[match].flag) { - *long_options[match].flag = long_options[match].val; - return (0); + } else { /* unknown option */ + if (short_too) { + --optind; + return (-1); } - else - return (long_options[match].val); + if (PRINT_ERROR) + warnx(illoptstring, current_argv); + optopt = 0; + return (BADCH); + } + if (idx) + *idx = match; + if (long_options[match].flag) { + *long_options[match].flag = long_options[match].val; + return (0); + } else + return (long_options[match].val); } /* * getopt_internal -- * Parse argc/argv argument vector. Called by user level routines. */ -static int -getopt_internal(int nargc, char * const *nargv, const char *options, -const struct option *long_options, int *idx, int flags) -{ - const char *oli; /* option letter list index */ - int optchar, short_too; - static int posixly_correct = -1; - - if (options == NULL) - return (-1); - - /* - * XXX Some GNU programs (like cvs) set optind to 0 instead of - * XXX using optreset. Work around this braindamage. - */ - if (optind == 0) - optind = optreset = 1; - - /* - * Disable GNU extensions if POSIXLY_CORRECT is set or options - * string begins with a '+'. - */ - if (posixly_correct == -1 || optreset) - posixly_correct = (getenv("POSIXLY_CORRECT") != NULL); - if (*options == '-') - flags |= FLAG_ALLARGS; - else if (posixly_correct || *options == '+') - flags &= ~FLAG_PERMUTE; - if (*options == '+' || *options == '-') - options++; - - optarg = NULL; - if (optreset) - nonopt_start = nonopt_end = -1; +static int getopt_internal(int nargc, char *const *nargv, const char *options, + const struct option *long_options, int *idx, + int flags) { + const char *oli; /* option letter list index */ + int optchar, short_too; + static int posixly_correct = -1; + + if (options == NULL) + return (-1); + + /* + * XXX Some GNU programs (like cvs) set optind to 0 instead of + * XXX using optreset. Work around this braindamage. + */ + if (optind == 0) + optind = optreset = 1; + + /* + * Disable GNU extensions if POSIXLY_CORRECT is set or options + * string begins with a '+'. + */ + if (posixly_correct == -1 || optreset) + posixly_correct = (getenv("POSIXLY_CORRECT") != NULL); + if (*options == '-') + flags |= FLAG_ALLARGS; + else if (posixly_correct || *options == '+') + flags &= ~FLAG_PERMUTE; + if (*options == '+' || *options == '-') + options++; + + optarg = NULL; + if (optreset) + nonopt_start = nonopt_end = -1; start: - if (optreset || !*place) { /* update scanning pointer */ - optreset = 0; - if (optind >= nargc) { /* end of argument vector */ - place = EMSG; - if (nonopt_end != -1) { - /* do permutation, if we have to */ - permute_args(nonopt_start, nonopt_end, - optind, nargv); - optind -= nonopt_end - nonopt_start; - } - else if (nonopt_start != -1) { - /* - * If we skipped non-options, set optind - * to the first of them. - */ - optind = nonopt_start; - } - nonopt_start = nonopt_end = -1; - return (-1); - } - if (*(place = nargv[optind]) != '-' || - (place[1] == '\0' && strchr(options, '-') == NULL)) { - place = EMSG; /* found non-option */ - if (flags & FLAG_ALLARGS) { - /* - * GNU extension: - * return non-option as argument to option 1 - */ - optarg = nargv[optind++]; - return (INORDER); - } - if (!(flags & FLAG_PERMUTE)) { - /* - * If no permutation wanted, stop parsing - * at first non-option. - */ - return (-1); - } - /* do permutation */ - if (nonopt_start == -1) - nonopt_start = optind; - else if (nonopt_end != -1) { - permute_args(nonopt_start, nonopt_end, - optind, nargv); - nonopt_start = optind - - (nonopt_end - nonopt_start); - nonopt_end = -1; - } - optind++; - /* process next argument */ - goto start; - } - if (nonopt_start != -1 && nonopt_end == -1) - nonopt_end = optind; - + if (optreset || !*place) { /* update scanning pointer */ + optreset = 0; + if (optind >= nargc) { /* end of argument vector */ + place = EMSG; + if (nonopt_end != -1) { + /* do permutation, if we have to */ + permute_args(nonopt_start, nonopt_end, optind, nargv); + optind -= nonopt_end - nonopt_start; + } else if (nonopt_start != -1) { /* - * If we have "-" do nothing, if "--" we are done. + * If we skipped non-options, set optind + * to the first of them. */ - if (place[1] != '\0' && *++place == '-' && place[1] == '\0') { - optind++; - place = EMSG; - /* - * We found an option (--), so if we skipped - * non-options, we have to permute. - */ - if (nonopt_end != -1) { - permute_args(nonopt_start, nonopt_end, - optind, nargv); - optind -= nonopt_end - nonopt_start; - } - nonopt_start = nonopt_end = -1; - return (-1); - } + optind = nonopt_start; + } + nonopt_start = nonopt_end = -1; + return (-1); } + if (*(place = nargv[optind]) != '-' || + (place[1] == '\0' && strchr(options, '-') == NULL)) { + place = EMSG; /* found non-option */ + if (flags & FLAG_ALLARGS) { + /* + * GNU extension: + * return non-option as argument to option 1 + */ + optarg = nargv[optind++]; + return (INORDER); + } + if (!(flags & FLAG_PERMUTE)) { + /* + * If no permutation wanted, stop parsing + * at first non-option. + */ + return (-1); + } + /* do permutation */ + if (nonopt_start == -1) + nonopt_start = optind; + else if (nonopt_end != -1) { + permute_args(nonopt_start, nonopt_end, optind, nargv); + nonopt_start = optind - (nonopt_end - nonopt_start); + nonopt_end = -1; + } + optind++; + /* process next argument */ + goto start; + } + if (nonopt_start != -1 && nonopt_end == -1) + nonopt_end = optind; /* - * Check long options if: - * 1) we were passed some - * 2) the arg is not just "-" - * 3) either the arg starts with -- we are getopt_long_only() + * If we have "-" do nothing, if "--" we are done. */ - if (long_options != NULL && place != nargv[optind] && - (*place == '-' || (flags & FLAG_LONGONLY))) { - short_too = 0; - if (*place == '-') - place++; /* --foo long option */ - else if (*place != ':' && strchr(options, *place) != NULL) - short_too = 1; /* could be short option too */ - - optchar = parse_long_options(nargv, options, long_options, - idx, short_too); - if (optchar != -1) { - place = EMSG; - return (optchar); - } + if (place[1] != '\0' && *++place == '-' && place[1] == '\0') { + optind++; + place = EMSG; + /* + * We found an option (--), so if we skipped + * non-options, we have to permute. + */ + if (nonopt_end != -1) { + permute_args(nonopt_start, nonopt_end, optind, nargv); + optind -= nonopt_end - nonopt_start; + } + nonopt_start = nonopt_end = -1; + return (-1); + } + } + + /* + * Check long options if: + * 1) we were passed some + * 2) the arg is not just "-" + * 3) either the arg starts with -- we are getopt_long_only() + */ + if (long_options != NULL && place != nargv[optind] && + (*place == '-' || (flags & FLAG_LONGONLY))) { + short_too = 0; + if (*place == '-') + place++; /* --foo long option */ + else if (*place != ':' && strchr(options, *place) != NULL) + short_too = 1; /* could be short option too */ + + optchar = parse_long_options(nargv, options, long_options, idx, short_too); + if (optchar != -1) { + place = EMSG; + return (optchar); } + } - if ((optchar = (int)*place++) == (int)':' || - (optchar == (int)'-' && *place != '\0') || - (oli = strchr(options, optchar)) == NULL) { - /* - * If the user specified "-" and '-' isn't listed in - * options, return -1 (non-option) as per POSIX. - * Otherwise, it is an unknown option character (or ':'). - */ - if (optchar == (int)'-' && *place == '\0') - return (-1); - if (!*place) - ++optind; + if ((optchar = (int)*place++) == (int)':' || + (optchar == (int)'-' && *place != '\0') || + (oli = strchr(options, optchar)) == NULL) { + /* + * If the user specified "-" and '-' isn't listed in + * options, return -1 (non-option) as per POSIX. + * Otherwise, it is an unknown option character (or ':'). + */ + if (optchar == (int)'-' && *place == '\0') + return (-1); + if (!*place) + ++optind; + if (PRINT_ERROR) + warnx(illoptchar, optchar); + optopt = optchar; + return (BADCH); + } + if (long_options != NULL && optchar == 'W' && oli[1] == ';') { + /* -W long-option */ + if (*place) /* no space */ + /* NOTHING */; + else if (++optind >= nargc) { /* no arg */ + place = EMSG; + if (PRINT_ERROR) + warnx(recargchar, optchar); + optopt = optchar; + return (BADARG); + } else /* white space */ + place = nargv[optind]; + optchar = parse_long_options(nargv, options, long_options, idx, 0); + place = EMSG; + return (optchar); + } + if (*++oli != ':') { /* doesn't take argument */ + if (!*place) + ++optind; + } else { /* takes (optional) argument */ + optarg = NULL; + if (*place) /* no white space */ + optarg = const_cast<char *>(place); + else if (oli[1] != ':') { /* arg not optional */ + if (++optind >= nargc) { /* no arg */ + place = EMSG; if (PRINT_ERROR) - warnx(illoptchar, optchar); + warnx(recargchar, optchar); optopt = optchar; - return (BADCH); - } - if (long_options != NULL && optchar == 'W' && oli[1] == ';') { - /* -W long-option */ - if (*place) /* no space */ - /* NOTHING */; - else if (++optind >= nargc) { /* no arg */ - place = EMSG; - if (PRINT_ERROR) - warnx(recargchar, optchar); - optopt = optchar; - return (BADARG); - } - else /* white space */ - place = nargv[optind]; - optchar = parse_long_options(nargv, options, long_options, - idx, 0); - place = EMSG; - return (optchar); - } - if (*++oli != ':') { /* doesn't take argument */ - if (!*place) - ++optind; + return (BADARG); + } else + optarg = nargv[optind]; } - else { /* takes (optional) argument */ - optarg = NULL; - if (*place) /* no white space */ - optarg = const_cast<char*>(place); - else if (oli[1] != ':') { /* arg not optional */ - if (++optind >= nargc) { /* no arg */ - place = EMSG; - if (PRINT_ERROR) - warnx(recargchar, optchar); - optopt = optchar; - return (BADARG); - } - else - optarg = nargv[optind]; - } - place = EMSG; - ++optind; - } - /* dump back option letter */ - return (optchar); + place = EMSG; + ++optind; + } + /* dump back option letter */ + return (optchar); } /* @@ -425,19 +410,17 @@ start: * [eventually this will replace the BSD getopt] */ #if defined(REPLACE_GETOPT) -int -getopt(int nargc, char * const *nargv, const char *options) -{ - - /* - * We don't pass FLAG_PERMUTE to getopt_internal() since - * the BSD getopt(3) (unlike GNU) has never done this. - * - * Furthermore, since many privileged programs call getopt() - * before dropping privileges it makes sense to keep things - * as simple (and bug-free) as possible. - */ - return (getopt_internal(nargc, nargv, options, NULL, NULL, 0)); +int getopt(int nargc, char *const *nargv, const char *options) { + + /* + * We don't pass FLAG_PERMUTE to getopt_internal() since + * the BSD getopt(3) (unlike GNU) has never done this. + * + * Furthermore, since many privileged programs call getopt() + * before dropping privileges it makes sense to keep things + * as simple (and bug-free) as possible. + */ + return (getopt_internal(nargc, nargv, options, NULL, NULL, 0)); } #endif @@ -446,12 +429,10 @@ getopt(int nargc, char * const *nargv, const char *options) * Parse argc/argv argument vector. */ #if defined(REPLACE_GETOPT_LONG) -int -getopt_long(int nargc, char * const *nargv, const char *options, -const struct option *long_options, int *idx) -{ - return (getopt_internal(nargc, nargv, options, long_options, idx, - FLAG_PERMUTE)); +int getopt_long(int nargc, char *const *nargv, const char *options, + const struct option *long_options, int *idx) { + return ( + getopt_internal(nargc, nargv, options, long_options, idx, FLAG_PERMUTE)); } #endif @@ -460,13 +441,11 @@ const struct option *long_options, int *idx) * Parse argc/argv argument vector. */ #if defined(REPLACE_GETOPT_LONG_ONLY) -int -getopt_long_only(int nargc, char * const *nargv, const char *options, -const struct option *long_options, int *idx) -{ +int getopt_long_only(int nargc, char *const *nargv, const char *options, + const struct option *long_options, int *idx) { - return (getopt_internal(nargc, nargv, options, long_options, idx, - FLAG_PERMUTE | FLAG_LONGONLY)); + return (getopt_internal(nargc, nargv, options, long_options, idx, + FLAG_PERMUTE | FLAG_LONGONLY)); } #endif |