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/*
buffer.h - functions for handling buffers
Copyright (C) 2002, 2005 Arthur de Jong
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, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _BUFFER_H
#define _BUFFER_H 1
/* structure for holding a string */
struct buffer
{
char *buf; /* pointer to allocated memory */
int alloc; /* size of allocated memory */
int len; /* amount of memory in use */
int linenumber; /* number of the line */
};
/* intialize struct buffer and allocate memory for it */
void buffer_init(struct buffer *line,int alloc);
/* change the size of the line */
void buffer_grow(struct buffer *line,int alloc);
/* free allocated memory */
void buffer_free(struct buffer *line);
/* make a copy of the sc line into dst line
optionaly growing of allocationg dst
the orriginal content of dst is lost and a pointer
to the result (dst or a new line if dst==NULL) */
struct buffer *buffer_copy(struct buffer *dst,struct buffer *src);
/* read a single line from the file
this function returns a struct buffer structure containing
the read line with newline or NULL on EOF
lines are delimited by the delim char */
struct buffer *buffer_readline(FILE *in,struct buffer *line,char delim);
/* read a complete file into a buffer */
struct buffer *buffer_readfile(FILE *in,struct buffer *buf);
#endif /* _BUFFER_H */
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