diff options
Diffstat (limited to 'contrib/less/ch.c')
| -rw-r--r-- | contrib/less/ch.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/contrib/less/ch.c b/contrib/less/ch.c index 2e2ded7..da729c5 100644 --- a/contrib/less/ch.c +++ b/contrib/less/ch.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1984-2012 Mark Nudelman + * Copyright (C) 1984-2015 Mark Nudelman * * You may distribute under the terms of either the GNU General Public * License or the Less License, as specified in the README file. @@ -54,7 +54,7 @@ struct buf { * The file state is maintained in a filestate structure. * A pointer to the filestate is kept in the ifile structure. */ -#define BUFHASH_SIZE 64 +#define BUFHASH_SIZE 1024 struct filestate { struct bufnode buflist; struct bufnode hashtbl[BUFHASH_SIZE]; @@ -323,13 +323,16 @@ ch_get() #if HAVE_STAT_INO if (follow_mode == FOLLOW_NAME) { - /* See whether the file's i-number has changed. + /* See whether the file's i-number has changed, + * or the file has shrunk. * If so, force the file to be closed and * reopened. */ struct stat st; + POSITION curr_pos = ch_tell(); int r = stat(get_filename(curr_ifile), &st); if (r == 0 && (st.st_ino != curr_ino || - st.st_dev != curr_dev)) + st.st_dev != curr_dev || + (curr_pos != NULL_POSITION && st.st_size < curr_pos))) { /* screen_trashed=2 causes * make_display to reopen the file. */ @@ -536,6 +539,32 @@ ch_end_seek() } /* + * Seek to the last position in the file that is currently buffered. + */ + public int +ch_end_buffer_seek() +{ + register struct buf *bp; + register struct bufnode *bn; + POSITION buf_pos; + POSITION end_pos; + + if (thisfile == NULL || (ch_flags & CH_CANSEEK)) + return (ch_end_seek()); + + end_pos = 0; + FOR_BUFS(bn) + { + bp = bufnode_buf(bn); + buf_pos = (bp->block * LBUFSIZE) + bp->datasize; + if (buf_pos > end_pos) + end_pos = buf_pos; + } + + return (ch_seek(end_pos)); +} + +/* * Seek to the beginning of the file, or as close to it as we can get. * We may not be able to seek there if input is a pipe and the * beginning of the pipe is no longer buffered. |
