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/*-
* Copyright (c) 2014-2015 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __wt_getline --
* Get a line from a stream.
*
* Implementation of the POSIX getline or BSD fgetln functions (finding the
* function in a portable way is hard, it's simple enough to write it instead).
*
* Note: Unlike the standard getline calls, this function doesn't include the
* trailing newline character in the returned buffer and discards empty lines
* (so the caller's EOF marker is a returned line length of 0).
*/
int
__wt_getline(WT_SESSION_IMPL *session, WT_ITEM *buf, FILE *fp)
{
int c;
/*
* We always NUL-terminate the returned string (even if it's empty),
* make sure there's buffer space for a trailing NUL in all cases.
*/
WT_RET(__wt_buf_init(session, buf, 100));
while ((c = fgetc(fp)) != EOF) {
/* Leave space for a trailing NUL. */
WT_RET(__wt_buf_extend(session, buf, buf->size + 2));
if (c == '\n') {
if (buf->size == 0)
continue;
break;
}
((char *)buf->mem)[buf->size++] = (char)c;
}
if (c == EOF && ferror(fp))
WT_RET_MSG(session, __wt_errno(), "file read");
((char *)buf->mem)[buf->size] = '\0';
return (0);
}
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