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/* Yash: yet another shell */
/* input.h: functions for input of command line */
/* (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_INPUT_H
#define YASH_INPUT_H
#include <stdlib.h>
#include <wchar.h>
struct promptset_T {
wchar_t *main, *right, *styler, *predict;
};
#define PROMPT_RESET L"\\fD"
extern struct promptset_T get_prompt(int type);
static inline void free_prompt(struct promptset_T prompt);
extern void print_prompt(const wchar_t *s)
__attribute__((nonnull));
extern _Bool unset_nonblocking(int fd);
/* Frees the specified prompt set. */
void free_prompt(struct promptset_T prompt)
{
free(prompt.main);
free(prompt.right);
free(prompt.styler);
free(prompt.predict);
}
/* The result type of `inputfunc_T'. */
typedef enum inputresult_T {
INPUT_OK, /* A line was read successfully. */
INPUT_EOF, /* The end of file was reached. */
INPUT_INTERRUPTED, /* SIGINT was received (interactive shell only) */
INPUT_ERROR, /* Other error was encountered. */
} inputresult_T;
struct xwcsbuf_T;
struct input_file_info_T;
extern inputresult_T read_input(
struct xwcsbuf_T *buf, struct input_file_info_T *info, _Bool trap)
__attribute__((nonnull));
extern inputresult_T read_input_delimited(
struct xwcsbuf_T *buf, struct input_file_info_T *info, _Bool trap,
wchar_t delimiter)
__attribute__((nonnull));
/* The type of input functions.
* An input function reads input and appends it to buffer `buf'.
* Input is done line-wise: the buffer contents are always terminated by a
* newline character (L'\n') except when the end of file is reached and the last
* line does not have a newline.
* An input function should not read more than one line at a time, as commands
* (which may contain alias definitions) should be executed as soon as possible,
* before the next line is parsed.
* The result is indicated by a value of the `inputresult_T' type. If the return
* value is other than INPUT_OK, the buffer is unchanged.
* The input function may be called even after it returned a value other than
* INPUT_OK. */
typedef inputresult_T inputfunc_T(struct xwcsbuf_T *buf, void *inputinfo);
/* input functions */
extern inputresult_T input_wcs(struct xwcsbuf_T *buf, void *inputinfo)
__attribute__((nonnull));
extern inputresult_T input_file(struct xwcsbuf_T *buf, void *inputinfo)
__attribute__((nonnull));
extern inputresult_T input_interactive(struct xwcsbuf_T *buf, void *inputinfo)
__attribute__((nonnull));
/* to be used as `inputinfo' for `input_wcs' */
struct input_wcs_info_T {
const wchar_t *src; /* the input source code */
};
/* to be used as `inputinfo' for `input_file' */
struct input_file_info_T {
int fd;
mbstate_t state;
size_t bufpos, bufmax, bufsize;
char buf[];
};
/* `bufsize' is the size of `buf', which must be at least one byte. */
/* to be used as `inputinfo' for `input_interactive' */
struct input_interactive_info_T {
struct input_file_info_T *fileinfo;
int prompttype;
};
#endif /* YASH_INPUT_H */
/* vim: set ts=8 sts=4 sw=4 et tw=80: */
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