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/* linebuffer.h -- declarations for reading arbitrarily long lines
Copyright (C) 1986, 1991, 1998-1999, 2002-2003, 2007, 2009-2025 Free
Software Foundation, Inc.
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 3 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 <https://www.gnu.org/licenses/>. */
#if !defined LINEBUFFER_H
#define LINEBUFFER_H
#include "idx.h"
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
#endif
/* A 'struct linebuffer' holds a line of text. */
struct linebuffer
{
idx_t size; /* Allocated. */
idx_t length; /* Used. */
char *buffer;
};
/* Initialize linebuffer LINEBUFFER for use. */
void initbuffer (struct linebuffer *linebuffer);
/* Read an arbitrarily long line of text from STREAM into LINEBUFFER.
Consider lines to be terminated by DELIMITER.
Keep the delimiter; append DELIMITER if we reach EOF and it wasn't
the last character in the file. Do not NUL-terminate.
Return LINEBUFFER, except at end of file return NULL. */
struct linebuffer *readlinebuffer_delim (struct linebuffer *linebuffer,
FILE *stream, char delimiter);
/* Read an arbitrarily long line of text from STREAM into LINEBUFFER.
Keep the newline; append a newline if it's the last line of a file
that ends in a non-newline character. Do not NUL-terminate.
Return LINEBUFFER, except at end of file return NULL. */
struct linebuffer *readlinebuffer (struct linebuffer *linebuffer, FILE *stream);
/* Free linebuffer LINEBUFFER and its data, all allocated with malloc. */
void freebuffer (struct linebuffer *);
#ifdef __cplusplus
}
#endif
#endif /* LINEBUFFER_H */
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