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/* Yash: yet another shell */
/* variable.h: deals with shell variables and parameters */
/* (C) 2007-2025 magicant */
/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef YASH_VARIABLE_H
#define YASH_VARIABLE_H
#include <stddef.h>
#include "xgetopt.h"
extern char **environ;
/* variable names */
#define VAR_CDPATH "CDPATH"
#define VAR_COLUMNS "COLUMNS"
#define VAR_COMMAND "COMMAND"
#define VAR_COMMAND_NOT_FOUND_HANDLER "COMMAND_NOT_FOUND_HANDLER"
#define VAR_DIRSTACK "DIRSTACK"
#define VAR_ECHO_STYLE "ECHO_STYLE"
#define VAR_ENV "ENV"
#define VAR_FCEDIT "FCEDIT"
#define VAR_HANDLED "HANDLED"
#define VAR_HISTFILE "HISTFILE"
#define VAR_HISTRMDUP "HISTRMDUP"
#define VAR_HISTSIZE "HISTSIZE"
#define VAR_HOME "HOME"
#define VAR_IFS "IFS"
#define VAR_LANG "LANG"
#define VAR_LC_ALL "LC_ALL"
#define VAR_LC_COLLATE "LC_COLLATE"
#define VAR_LC_CTYPE "LC_CTYPE"
#define VAR_LC_MESSAGES "LC_MESSAGES"
#define VAR_LC_MONETARY "LC_MONETARY"
#define VAR_LC_NUMERIC "LC_NUMERIC"
#define VAR_LC_TIME "LC_TIME"
#define VAR_LINENO "LINENO"
#define VAR_LINES "LINES"
#define VAR_MAIL "MAIL"
#define VAR_MAILCHECK "MAILCHECK"
#define VAR_MAILPATH "MAILPATH"
#define VAR_NLSPATH "NLSPATH"
#define VAR_OLDPWD "OLDPWD"
#define VAR_OPTARG "OPTARG"
#define VAR_OPTIND "OPTIND"
#define VAR_PATH "PATH"
#define VAR_POST_PROMPT_COMMAND "POST_PROMPT_COMMAND"
#define VAR_PPID "PPID"
#define VAR_PROMPT_COMMAND "PROMPT_COMMAND"
#define VAR_PS1 "PS1"
#define VAR_PS2 "PS2"
#define VAR_PS4 "PS4"
#define VAR_PWD "PWD"
#define VAR_RANDOM "RANDOM"
#define VAR_TARGETWORD "TARGETWORD"
#define VAR_TERM "TERM"
#define VAR_WORDS "WORDS"
#define VAR_XDG_CONFIG_HOME "XDG_CONFIG_HOME"
#define VAR_YASH_AFTER_CD "YASH_AFTER_CD"
#define VAR_YASH_LE_TIMEOUT "YASH_LE_TIMEOUT"
#define VAR_YASH_LOADPATH "YASH_LOADPATH"
#define VAR_YASH_VERSION "YASH_VERSION"
#define L L""
struct variable_T;
struct assign_T;
struct command_T;
typedef enum path_T {
PA_PATH, PA_CDPATH, PA_LOADPATH,
PA_count,
} path_T;
extern void init_environment(void);
extern void init_variables(void);
extern char *get_exported_value(const wchar_t *name)
__attribute__((nonnull,malloc,warn_unused_result));
typedef enum scope_T {
SCOPE_GLOBAL, SCOPE_LOCAL, SCOPE_TEMP,
} scope_T;
extern _Bool set_variable(
const wchar_t *name, wchar_t *value, scope_T scope, _Bool export)
__attribute__((nonnull(1)));
extern struct variable_T *set_array(
const wchar_t *name, size_t count, void **values,
scope_T scope, _Bool export)
__attribute__((nonnull));
extern _Bool set_array_element(
const wchar_t *name, size_t index, wchar_t *value)
__attribute__((nonnull));
extern void set_positional_parameters(void *const *values)
__attribute__((nonnull));
extern _Bool do_assignments(
const struct assign_T *assigns, _Bool temp, _Bool export);
struct get_variable_T {
enum { GV_NOTFOUND, GV_SCALAR, GV_ARRAY, GV_ARRAY_CONCAT, } type;
size_t count;
void **values;
_Bool freevalues;
};
extern const wchar_t *getvar(const wchar_t *name)
__attribute__((pure,nonnull));
extern struct get_variable_T get_variable(const wchar_t *name)
__attribute__((nonnull,warn_unused_result));
extern void save_get_variable_values(struct get_variable_T *gv)
__attribute__((nonnull));
extern void open_new_environment(_Bool temp);
extern void close_current_environment(void);
extern void update_lineno(unsigned long lineno);
extern char **decompose_paths(const wchar_t *paths)
__attribute__((malloc,warn_unused_result));
extern char *const *get_path_array(path_T name);
extern _Bool define_function(const wchar_t *name, struct command_T *body)
__attribute__((nonnull));
extern struct command_T *get_function(const wchar_t *name)
__attribute__((nonnull));
#if YASH_ENABLE_DIRSTACK
extern _Bool parse_dirstack_index(
const wchar_t *restrict indexstr, size_t *restrict indexp,
const wchar_t **restrict entryp, _Bool printerror)
__attribute__((nonnull));
#endif
extern int typeset_builtin(int argc, void **argv)
__attribute__((nonnull));
#if YASH_ENABLE_HELP
extern const char typeset_help[], typeset_syntax[], export_help[],
export_syntax[], local_help[], local_syntax[], readonly_help[],
readonly_syntax[];
#endif
extern const struct xgetopt_T typeset_options[];
#define local_options (&typeset_options[2])
extern int array_builtin(int argc, void **argv)
__attribute__((nonnull));
#if YASH_ENABLE_HELP
extern const char array_help[], array_syntax[];
#endif
extern const struct xgetopt_T array_options[];
extern int unset_builtin(int argc, void **argv)
__attribute__((nonnull));
#if YASH_ENABLE_HELP
extern const char unset_help[], unset_syntax[];
#endif
extern const struct xgetopt_T unset_options[];
extern int shift_builtin(int argc, void **argv)
__attribute__((nonnull));
#if YASH_ENABLE_HELP
extern const char shift_help[], shift_syntax[];
#endif
extern const struct xgetopt_T shift_options[];
extern int getopts_builtin(int argc, void **argv)
__attribute__((nonnull));
#if YASH_ENABLE_HELP
extern const char getopts_help[], getopts_syntax[];
#endif
extern int read_builtin(int argc, void **argv)
__attribute__((nonnull));
#if YASH_ENABLE_HELP
extern const char read_help[], read_syntax[];
#endif
extern const struct xgetopt_T read_options[];
extern int pushd_builtin(int argc, void **argv)
__attribute__((nonnull));
#if YASH_ENABLE_HELP
extern const char pushd_help[], pushd_syntax[];
#endif
extern const struct xgetopt_T pushd_options[];
#if YASH_ENABLE_DIRSTACK
# define cd_options (&pushd_options[1])
# define pwd_options (&pushd_options[3])
#else
# define cd_options pushd_options
# define pwd_options (&pushd_options[2])
#endif
extern int popd_builtin(int argc, void **argv)
__attribute__((nonnull));
#if YASH_ENABLE_HELP
extern const char popd_help[], popd_syntax[];
#endif
extern int dirs_builtin(int argc, void **argv)
__attribute__((nonnull));
#if YASH_ENABLE_HELP
extern const char dirs_help[], dirs_syntax[];
#endif
extern const struct xgetopt_T dirs_options[];
#endif /* YASH_VARIABLE_H */
/* vim: set ts=8 sts=4 sw=4 et tw=80: */
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