Commit Graph

46 Commits

Author SHA1 Message Date
Denys Vlasenko
b0648b0e78 shell: remove ${#+} tests, it is not a valid construct
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26 00:30:02 +02:00
Denys Vlasenko
2093ad296f hush: fix ${##}, ${#?}, ${#!} handling
function                                             old     new   delta
parse_dollar                                         786     820     +34
expand_one_var                                      1579    1592     +13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 47/0)               Total: 47 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-26 00:07:27 +02:00
Denys Vlasenko
b28d4c3462 ash: [VAR] Move unsetvar functionality into setvareq
Upstream commit:

    Date: Tue, 25 May 2010 20:55:05 +0800
    [VAR] Move unsetvar functionality into setvareq

    This patch moves the unsetvar code into setvareq so that we can
    no have a pathological case of an unset variable hanging around
    unless it has a bit pinning it like VEXPORT.

    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

function                                             old     new   delta
setvareq                                             227     303     +76
expmeta                                              517     521      +4
localcmd                                             364     366      +2
unsetcmd                                              96      76     -20
unsetvar                                             129       7    -122
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/2 up/down: 82/-142)           Total: -60 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25 16:29:36 +02:00
Denys Vlasenko
be669fa1fd ash: import param_expand_default.tests from hush
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25 15:25:07 +02:00
Denys Vlasenko
645c697372 hush: treat ${#?} as "length of $?"
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25 15:18:57 +02:00
Denys Vlasenko
64925384c9 ash: add a few tests from hush-vars/*
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-25 14:55:05 +02:00
Denys Vlasenko
0eed355eac ash: suppress readonly1.tests false positive; add readonly0.tests
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-21 13:37:25 +02:00
Denys Vlasenko
826360ff23 ash: more general format ${var:EXPR:EXPR}
function                                             old     new   delta
subevalvar                                          1171    1202     +31
localcmd                                             364     366      +2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-17 17:49:11 +02:00
Denys Vlasenko
74d20e6379 typo fix
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-06 19:50:42 +02:00
Denys Vlasenko
5dad7bdc3b hush: implement negative start in the ${v: -n[:m]} idiom
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-06 19:48:20 +02:00
Denys Vlasenko
3234045d07 hush: "adopt" ash var-utf8-length.tests
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-06 19:29:23 +02:00
Denys Vlasenko
d81e9f5093 ash: fix interactive "command eval STRING" exiting on errors.
This bug is also present in current dash

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-28 15:43:50 +02:00
Denys Vlasenko
f15aa57a7f ash: [PARSER] Fix parsing of ${##1}
Upstream commit:

    Date: Thu, 4 Oct 2007 22:15:10 +0800
    [PARSER] Fix parsing of ${##1}

    Previously dash treated ${##1} as a length operation.  This patch fixes that.

    Test case:

        set -- a
        echo ${##1}OK

    Old result:

        1OK

    New result:

        OK

This was a real bug in ash (but not in hush).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-26 15:56:53 +02:00
Denys Vlasenko
a62bc80571 ash testsuite: add most of hust tests which pass for ash
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-03 00:06:55 +02:00
Denys Vlasenko
0ba99705a1 sh testsuite: sync ash-vars/ and hush-vars/
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-02 18:17:15 +02:00
Denys Vlasenko
e3354bc44a ash testsuite: update some of variable tests with newer versions from hush
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-02 18:08:04 +02:00
Denys Vlasenko
0aaaa50b45 ash: expand: Fixed "$@" expansion when EXP_FULL is false
Upstream commit:

    Date: Thu, 1 Jan 2015 07:53:10 +1100
    expand: Fixed "$@" expansion when EXP_FULL is false

    The commit 3c06acdac0b1ba0e0acdda513a57ee6e31385dce ([EXPAND]
    Split unquoted $@/$* correctly when IFS is set but empty) broke
    the case where $@ is in quotes and EXP_FULL is false.

    In that case we should still emit IFS as field splitting is not
    performed.

    Reported-by: Juergen Daubert <jue@jue.li>
    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-02 02:46:56 +02:00
Denys Vlasenko
88ac97d02d ash: [EXPAND] Do not split quoted VSLENGTH and VSTRIM
Upstream patch:

    Date: Wed, 8 Oct 2014 15:42:08 +0800
    [EXPAND] Do not split quoted VSLENGTH and VSTRIM

    Currently VSLENGTH and VSTRIM* are field-split even within quotes.
    This is obviously wrong.  This patch fixes that.

    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-01 20:55:02 +02:00
Denys Vlasenko
c4d4380a07 ash: [EXPAND] Split unquoted $@/$* correctly when IFS is set but empty
Upstream commit:

    Date: Wed, 8 Oct 2014 15:24:23 +0800
    [EXPAND] Split unquoted $@/$* correctly when IFS is set but empty

    Currently we do not field-split $@/$* when it isn't quoted and IFS
    is set but empty.  This is obviously wrong.  This patch fixes this.

    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-10-01 20:35:10 +02:00
Denys Vlasenko
7a24e8ffeb shell testsuite: add trailing newline to var_unbackslash1.tests
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-09-29 20:02:53 +02:00
Denys Vlasenko
459293b1c5 ash: fix arithmetic closing )) split by backslash-newline
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-09-29 17:58:58 +02:00
Denys Vlasenko
8286513838 hush: rework input char buffering to allow more than one-deep peek
This fixes backslash+newline continuation in
	$VAR\
	NAME
construct. (ash has a bug there as well).

function                                             old     new   delta
file_peek2                                             -      74     +74
parse_dollar                                         746     773     +27
expand_vars_to_list                                 1143    1167     +24
setup_string_in_str                                   32      46     +14
setup_file_in_str                                     33      47     +14
file_get                                             264     278     +14
static_peek2                                           -       7      +7
file_peek                                             91      72     -19
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 5/1 up/down: 174/-19)           Total: 155 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-09-29 16:59:06 +02:00
Denys Vlasenko
f8ddbe1ccc ash: fix handling of ${VAR: -2}
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2016-07-25 03:56:00 +02:00
Ron Yorston
3e3bfb896e ash: fix corruption of ${#var} if $var contains UTF-8 characters
As reported in bug 8506:

   $ X=abcdÉfghÍjklmnÓpqrstÚvwcyz
   $ echo ${#X}
   abcd26

The result should be 26.

This regression was introduced by:

   <d68d1fb> 2015-05-18 [Ron Yorston]  ash: code shrink around varvalue

The length in characters was being used to discard the contents of
the variable instead of the length in bytes.

URL: https://bugs.busybox.net/8506
Reported-by: Martijn Dekker <martijn@inlv.org>
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2016-03-22 18:19:29 -04:00
Ron Yorston
523006798c testsuite: add some tests for ash
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-05-18 10:13:21 +02:00
Ron Yorston
549deab5ab ash: move parse-time quote flag detection to run-time
Because the parser does not recursively parse parameter expansion
with respect to quotes, we can't accurately determine quote status at
parse time.  This patch works around this by moving the quote detection
to run-time where we do interpret it recursively.

Test case:
   foo=\\ echo "<${foo#[\\]}>"
Old result:
   <\>
New result:
   <>

Do not quote back slashes in parameter expansions outside quotes.

Test case:
   a=/b/c/*
   b=\\
   echo ${a%$b*}
Old result:
   /b/c/*
New result:
   /b/c/

Based on commits 880d952, 7cfd8be, 0d7d660 and a7c21a6 from
git://git.kernel.org/pub/scm/utils/dash/dash.git by Herbert Xu

function                                             old     new   delta
argstr                                              1164    1193     +29
memtodest                                            147     174     +27
subevalvar                                          1153    1177     +24
redirect                                            1279    1282      +3
dolatstr                                               5       7      +2
static.spclchars                                      10       9      -1
expandarg                                            962     960      -2
evalcase                                             273     271      -2
evalcommand                                         1204    1197      -7
rmescapes                                            236     227      -9
preglob                                               27       8     -19
evalvar                                              604     582     -22
cmdputs                                              389     334     -55
readtoken1                                          3163    3061    -102
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/9 up/down: 85/-219)          Total: -134 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-05-18 09:57:51 +02:00
Ron Yorston
ad88bdee0c ash: remove arithmetic expansion collapsing at parse time
Collapsing arithmetic expansion is incorrect when the inner arithmetic
expansion is a part of a parameter expansion.

Test case:
   unset a
   echo $((3 + ${a:=$((4 + 5))}))
   echo $a
Old result:
   12
   (4 + 5)
New result:
   12
   9

Based on commit bb777a6 from git://git.kernel.org/pub/scm/utils/dash/dash.git
by Herbert Xu

function                                             old     new   delta
readtoken1                                          3180    3163     -17

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-05-18 09:56:16 +02:00
Ron Yorston
3df47f9cbb ash: do not expand tilde in parameter expansion within quotes
Test case:
   unset a
   echo "${a:-~root}"
Old result:
   /root
New result:
   ~root

Based on commit 170f44d from git://git.kernel.org/pub/scm/utils/dash/dash.git
by Herbert Xu

function                                             old     new   delta
evalvar                                              598     604      +6
parse_command                                       1440    1443      +3
localcmd                                             325     327      +2
readtoken1                                          3199    3200      +1
argstr                                              1180    1164     -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/1 up/down: 12/-16)             Total: -4 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-05-18 09:53:26 +02:00
Ron Yorston
eb6b48ba74 ash: perform tilde expansion in all parameter expansion words
Previously tilde expansion was not carried out for =?#% expansion words.

Test case:
   a=~root:~root
   echo ${a#~root}
Old result:
   /root:/root
New result:
   :/root

Based on commit dd721f71 from git://git.kernel.org/pub/scm/utils/dash/dash.git
by Herbert Xu

function                                             old     new   delta
subevalvar                                          1152    1153      +1

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-05-18 09:51:35 +02:00
Denys Vlasenko
0a0acb55db ash: fix handling of duplicate "local"
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-04-18 19:36:38 +02:00
Denys Vlasenko
36f774a0cd hush: add support for ${var/pattern/repl}, conditional on bash compat
function                                             old     new   delta
expand_vars_to_list                                 2386    2833    +447
expand_string_to_string                               69     110     +41
parse_dollar                                         681     721     +40
hush_main                                            963     945     -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/1 up/down: 528/-18)           Total: 510 bytes

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-05 14:47:58 +02:00
Denys Vlasenko
e298ce69ba hush: fix handling of backslashes in variable assignment
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-09-04 19:52:44 +02:00
Denys Vlasenko
f7a8433535 ash: add another ${v/a/b} test we currently fail
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2010-08-30 13:54:12 +02:00
Denys Vlasenko
33bbb27e45 ash: fix another bit of var_bash4 bug
But it _still_ doesn't pass! quoted case is a tough nut to crack

function                                             old     new   delta
redirect                                            1281    1286      +5
subevalvar                                          1141    1142      +1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-07 22:24:36 +02:00
Denys Vlasenko
c8d305d89f var_bash4.tests: better wording in comment
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-06 19:28:04 +02:00
Denys Vlasenko
f56fe82542 update var_bash4 test. one more bug revealed by it now...
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-06 17:21:52 +02:00
Denys Vlasenko
6814cbc928 ash: extend var_bash4.tests; nocode changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-05 18:29:13 +02:00
Denys Vlasenko
b0fbe4b540 ash: add a testcase for bug 2281 (currently fails). Small code cleanups.
function                                             old     new   delta
changepath                                           195     192      -3
subevalvar                                          1204    1200      -4
readtoken1                                          3247    3240      -7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-14)             Total: -14 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-05 17:19:27 +02:00
Denys Vlasenko
42c4b2e3b5 ash: fix var_leak.tests so that it actually catches the NOFORK bug
+ document the bug better

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-05-18 16:13:56 +02:00
Denys Vlasenko
51b4a9e2f1 ash: fix var_leak testcase
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-05-18 14:35:20 +02:00
Denis Vlasenko
2659c63213 ash: fix ${var/s/r} handling, add testcase. 2008-06-14 06:04:59 +00:00
Denis Vlasenko
6d1ebecf65 ash: add another testsuite entry ("leaking variables" bug) 2008-04-13 17:45:56 +00:00
Denis Vlasenko
f78a656f7c ash: a bit more complete POSIX subst testsuite entry 2008-04-12 23:02:43 +00:00
Denis Vlasenko
033424a213 ash: add testsuite entry for POSIX-mandated ${var#word} ${var##word}
${var%word} ${var%%word}
2008-04-12 22:55:33 +00:00
Denis Vlasenko
80591b0a00 ash: support for && and || in [[ expr ]]; add testsuite checks 2008-03-25 07:49:43 +00:00
Denis Vlasenko
0e6f661e23 ash: handle "A=1 A=2 B=$A; echo $B". closes bug 947. 2008-02-15 15:02:15 +00:00