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authorRob Landley <rob@landley.net>2012-11-27 13:55:57 -0600
committerRob Landley <rob@landley.net>2012-11-27 13:55:57 -0600
commit11ca9293c62041d5d0a4c44de21ba786524bfac3 (patch)
treeae329912822f8a6b34af5a18073c1594340ab2f6 /toys/posix/expand.c
parentab52d02963fcb0aecd8089ddc5cdc4d783092a4b (diff)
downloadtoybox-11ca9293c62041d5d0a4c44de21ba786524bfac3.tar.gz
First round of expand cleanups.
Diffstat (limited to 'toys/posix/expand.c')
-rw-r--r--toys/posix/expand.c32
1 files changed, 9 insertions, 23 deletions
diff --git a/toys/posix/expand.c b/toys/posix/expand.c
index bbe6fdf1..a322926a 100644
--- a/toys/posix/expand.c
+++ b/toys/posix/expand.c
@@ -2,36 +2,23 @@
*
* Copyright 2012 Jonathan Clairembault <jonathan at clairembault dot fr>
*
- * See http://http://pubs.opengroup.org/onlinepubs/9699919799/nframe.html
+ * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/expand.html
USE_EXPAND(NEWTOY(expand, "t:", TOYFLAG_USR|TOYFLAG_BIN))
config EXPAND
bool "expand"
- default n
+ default y
help
usage: expand [-t tablist] [file...]
- Command expand. Expands tabs to space according to tabstops.
+ Expand tabs to spaces according to tabstops.
- -t tablist
- Specify the tab stops. The argument tablist consists of either a single
- strictly positive decimal integer or a list of tabstops. If a single number
- is given, tabs are set that number of column positions apart instead of the
- default 8.
+ -t tablist
- If a list of tabstops is given, the list is made of two or more strictly
- positive decimal integers, separated by <blank> or <comma> characters, in
- strictly ascending order. The <tab> characters are set at those specific
- column positions.
-
- In the event of expand having to process a <tab> at a position beyond the
- last of those specified in a multiple tab-stop list, the <tab> is replaced
- by a single <space> in the output.
-
- Any <backspace> characters shall be copied to the output and cause the
- column position count for tab stop calculations to be decremented; the
- column position count shall not be decremented below zero.
+ Specify tab stops, either a single number instead of the default 8,
+ or a list of increasing numbers (comma or space separated, after which
+ each additional tab becomes one space).
*/
#define FOR_expand
@@ -135,8 +122,7 @@ static void expand_file(int fd, char *name)
void expand_main(void)
{
build_tablist((toys.optflags & FLAG_t) ? TT.t_flags : "8");
- /* expand every file */
+
loopfiles(toys.optargs, expand_file);
- /* free tablist */
- llist_traverse(TT.tablist.next, free);
+ if (CFG_TOYBOX_FREE) llist_traverse(TT.tablist.next, free);
}