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lib: Copy new header files from Gnulib without modification.
The getopt related files have changed from Gnulib by splitting up getopt.in.h into more modular header files. We could have kept everything in just getopt.in.h, but this will help us continue to update in the future.
This commit is contained in:
Jia Tan
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9834e591a4
4 changed files with 309 additions and 0 deletions
96
lib/getopt-core.h
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96
lib/getopt-core.h
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/* Declarations for getopt (basic, portable features only).
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Copyright (C) 1989-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library and is also part of gnulib.
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Patches to this file should be submitted to both projects.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _GETOPT_CORE_H
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#define _GETOPT_CORE_H 1
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/* This header should not be used directly; include getopt.h or
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unistd.h instead. Unlike most bits headers, it does not have
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a protective #error, because the guard macro for getopt.h in
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gnulib is not fixed. */
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__BEGIN_DECLS
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/* For communication from 'getopt' to the caller.
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When 'getopt' finds an option that takes an argument,
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the argument value is returned here.
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Also, when 'ordering' is RETURN_IN_ORDER,
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each non-option ARGV-element is returned here. */
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extern char *optarg;
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/* Index in ARGV of the next element to be scanned.
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This is used for communication to and from the caller
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and for communication between successive calls to 'getopt'.
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On entry to 'getopt', zero means this is the first call; initialize.
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When 'getopt' returns -1, this is the index of the first of the
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non-option elements that the caller should itself scan.
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Otherwise, 'optind' communicates from one call to the next
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how much of ARGV has been scanned so far. */
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extern int optind;
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/* Callers store zero here to inhibit the error message 'getopt' prints
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for unrecognized options. */
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extern int opterr;
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/* Set to an option character which was unrecognized. */
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extern int optopt;
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/* Get definitions and prototypes for functions to process the
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arguments in ARGV (ARGC of them, minus the program name) for
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options given in OPTS.
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Return the option character from OPTS just read. Return -1 when
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there are no more options. For unrecognized options, or options
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missing arguments, 'optopt' is set to the option letter, and '?' is
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returned.
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The OPTS string is a list of characters which are recognized option
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letters, optionally followed by colons, specifying that that letter
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takes an argument, to be placed in 'optarg'.
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If a letter in OPTS is followed by two colons, its argument is
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optional. This behavior is specific to the GNU 'getopt'.
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The argument '--' causes premature termination of argument
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scanning, explicitly telling 'getopt' that there are no more
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options.
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If OPTS begins with '-', then non-option arguments are treated as
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arguments to the option '\1'. This behavior is specific to the GNU
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'getopt'. If OPTS begins with '+', or POSIXLY_CORRECT is set in
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the environment, then do not permute arguments.
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For standards compliance, the 'argv' argument has the type
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char *const *, but this is inaccurate; if argument permutation is
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enabled, the argv array (not the strings it points to) must be
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writable. */
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extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
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__THROW _GL_ARG_NONNULL ((2, 3));
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__END_DECLS
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#endif /* _GETOPT_CORE_H */
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77
lib/getopt-ext.h
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77
lib/getopt-ext.h
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@ -0,0 +1,77 @@
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/* Declarations for getopt (GNU extensions).
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Copyright (C) 1989-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library and is also part of gnulib.
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Patches to this file should be submitted to both projects.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _GETOPT_EXT_H
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#define _GETOPT_EXT_H 1
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/* This header should not be used directly; include getopt.h instead.
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Unlike most bits headers, it does not have a protective #error,
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because the guard macro for getopt.h in gnulib is not fixed. */
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__BEGIN_DECLS
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/* Describe the long-named options requested by the application.
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The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
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of 'struct option' terminated by an element containing a name which is
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zero.
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The field 'has_arg' is:
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no_argument (or 0) if the option does not take an argument,
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required_argument (or 1) if the option requires an argument,
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optional_argument (or 2) if the option takes an optional argument.
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If the field 'flag' is not NULL, it points to a variable that is set
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to the value given in the field 'val' when the option is found, but
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left unchanged if the option is not found.
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To have a long-named option do something other than set an 'int' to
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a compiled-in constant, such as set a value from 'optarg', set the
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option's 'flag' field to zero and its 'val' field to a nonzero
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value (the equivalent single-letter option character, if there is
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one). For long options that have a zero 'flag' field, 'getopt'
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returns the contents of the 'val' field. */
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struct option
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{
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const char *name;
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/* has_arg can't be an enum because some compilers complain about
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type mismatches in all the code that assumes it is an int. */
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int has_arg;
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int *flag;
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int val;
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};
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/* Names for the values of the 'has_arg' field of 'struct option'. */
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#define no_argument 0
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#define required_argument 1
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#define optional_argument 2
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extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
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const char *__shortopts,
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const struct option *__longopts, int *__longind)
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__THROW _GL_ARG_NONNULL ((2, 3));
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extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
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const char *__shortopts,
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const struct option *__longopts, int *__longind)
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__THROW _GL_ARG_NONNULL ((2, 3));
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__END_DECLS
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#endif /* _GETOPT_EXT_H */
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66
lib/getopt-pfx-core.h
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66
lib/getopt-pfx-core.h
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@ -0,0 +1,66 @@
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/* getopt (basic, portable features) gnulib wrapper header.
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Copyright (C) 1989-2023 Free Software Foundation, Inc.
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This file is part of gnulib.
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Unlike most of the getopt implementation, it is NOT shared
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with the GNU C Library.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef _GETOPT_PFX_CORE_H
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#define _GETOPT_PFX_CORE_H 1
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/* This header should not be used directly; include getopt.h or
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unistd.h instead. It does not have a protective #error, because
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the guard macro for getopt.h in gnulib is not fixed. */
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/* Standalone applications should #define __GETOPT_PREFIX to an
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identifier that prefixes the external functions and variables
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defined in getopt-core.h and getopt-ext.h. Systematically
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rename identifiers so that they do not collide with the system
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functions and variables. Renaming avoids problems with some
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compilers and linkers. */
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#ifdef __GETOPT_PREFIX
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# ifndef __GETOPT_ID
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# define __GETOPT_CONCAT(x, y) x ## y
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# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
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# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
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# endif
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# undef getopt
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# undef optarg
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# undef opterr
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# undef optind
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# undef optopt
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# define getopt __GETOPT_ID (getopt)
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# define optarg __GETOPT_ID (optarg)
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# define opterr __GETOPT_ID (opterr)
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# define optind __GETOPT_ID (optind)
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# define optopt __GETOPT_ID (optopt)
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/* Work around a problem on macOS, which declares getopt with a
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trailing __DARWIN_ALIAS(getopt) that would expand to something like
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__asm("_" "rpl_getopt" "$UNIX2003") were it not for the following
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hack to suppress the macOS declaration <https://bugs.gnu.org/40205>. */
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# ifdef __APPLE__
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# define _GETOPT
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# endif
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/* The system's getopt.h may have already included getopt-core.h to
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declare the unprefixed identifiers. Undef _GETOPT_CORE_H so that
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getopt-core.h declares them with prefixes. */
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# undef _GETOPT_CORE_H
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#endif
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#include <getopt-core.h>
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#endif /* _GETOPT_PFX_CORE_H */
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70
lib/getopt-pfx-ext.h
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70
lib/getopt-pfx-ext.h
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/* getopt (GNU extensions) gnulib wrapper header.
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Copyright (C) 1989-2023 Free Software Foundation, Inc.
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This file is part of gnulib.
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Unlike most of the getopt implementation, it is NOT shared
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with the GNU C Library.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef _GETOPT_PFX_EXT_H
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#define _GETOPT_PFX_EXT_H 1
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/* This header should not be used directly; include getopt.h instead.
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It does not have a protective #error, because the guard macro for
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getopt.h in gnulib is not fixed. */
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/* Standalone applications should #define __GETOPT_PREFIX to an
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identifier that prefixes the external functions and variables
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defined in getopt-core.h and getopt-ext.h. Systematically
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rename identifiers so that they do not collide with the system
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functions and variables. Renaming avoids problems with some
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compilers and linkers. */
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#ifdef __GETOPT_PREFIX
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# ifndef __GETOPT_ID
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# define __GETOPT_CONCAT(x, y) x ## y
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# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
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# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
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# endif
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# undef getopt_long
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# undef getopt_long_only
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# undef option
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# undef _getopt_internal
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# define getopt_long __GETOPT_ID (getopt_long)
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# define getopt_long_only __GETOPT_ID (getopt_long_only)
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# define option __GETOPT_ID (option)
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# define _getopt_internal __GETOPT_ID (getopt_internal)
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/* The system's getopt.h may have already included getopt-ext.h to
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declare the unprefixed identifiers. Undef _GETOPT_EXT_H so that
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getopt-ext.h declares them with prefixes. */
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# undef _GETOPT_EXT_H
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#endif
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/* Standalone applications get correct prototypes for getopt_long and
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getopt_long_only; they declare "char **argv". For backward
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compatibility with old applications, if __GETOPT_PREFIX is not
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defined, we supply GNU-libc-compatible, but incorrect, prototypes
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using "char *const *argv". (GNU libc is stuck with the incorrect
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prototypes, as they are baked into older versions of LSB.) */
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#ifndef __getopt_argv_const
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# if defined __GETOPT_PREFIX
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# define __getopt_argv_const /* empty */
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# else
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# define __getopt_argv_const const
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# endif
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#endif
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#include <getopt-ext.h>
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#endif /* _GETOPT_PFX_EXT_H */
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