2f57ecae4b
This is a new major release with a number of changes and extensions: - Limited the number of temporary numbers and made the space for them static so that allocating more space for them cannot fail. - Allowed integers with non-zero scale to be used with power, places, and shift operators. - Added greatest common divisor and least common multiple to lib2.bc. - Made bc and dc UTF-8 capable. - Added the ability for users to have bc and dc quit on SIGINT. - Added the ability for users to disable prompt and TTY mode by environment variables. - Added the ability for users to redefine keywords. - Added dc's modular exponentiation and divmod to bc. - Added the ability to assign strings to variables and array elements and pass them to functions in bc. - Added dc's asciify command and stream printing to bc. - Added bitwise and, or, xor, left shift, right shift, reverse, left rotate, right rotate, and mod functions to lib2.bc. - Added the functions s2u(x) and s2un(x,n), to lib2.bc.
83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
/*
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* *****************************************************************************
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2018-2021 Gavin D. Howard and contributors.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* *****************************************************************************
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*
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* Code to handle special I/O for bc.
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*
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*/
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#ifndef BC_READ_H
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#define BC_READ_H
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#include <stdlib.h>
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#include <status.h>
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#include <vector.h>
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/**
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* Returns true if @a c is a non-ASCII (invalid) char.
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* @param c The character to test.
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* @return True if @a c is an invalid char.
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*/
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#define BC_READ_BIN_CHAR(c) (!(c))
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/**
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* Reads a line from stdin after printing prompt, if desired.
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* @param vec The vector to put the stdin data into.
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* @param prompt The prompt to print, if desired.
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*/
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BcStatus bc_read_line(BcVec *vec, const char *prompt);
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/**
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* Read a file and return a buffer with the data. The buffer must be freed by
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* the caller.
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* @param path The path to the file to read.
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*/
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char* bc_read_file(const char *path);
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/**
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* Helper function for reading characters from stdin. This takes care of a bunch
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* of complex error handling. Thus, it returns a status instead of throwing an
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* error, except for fatal errors.
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* @param vec The vec to put the stdin into.
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* @param prompt The prompt to print, if desired.
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*/
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BcStatus bc_read_chars(BcVec *vec, const char *prompt);
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/**
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* Read a line from buf into vec.
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* @param vec The vector to read data into.
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* @param buf The buffer to read from.
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* @param buf_len The length of the buffer.
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*/
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bool bc_read_buf(BcVec *vec, char *buf, size_t *buf_len);
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#endif // BC_READ_H
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