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hush: finish and enable optional case...esac support. Code size cost:

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function                                             old     new   delta
run_list                                            1891    2075    +184
parse_stream                                        1764    1847     +83
expand_strvec_to_string                                -      83     +83
done_word                                            647     715     +68
static.reserved_list                                 144     168     +24
static.reserved_match                                  -      12     +12
done_pipe                                             95     105     +10
builtin_exit                                          48      46      -2
builtin_eval                                         127      54     -73
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 5/2 up/down: 464/-75)           Total: 389 bytes
This commit is contained in:
Denis Vlasenko
2008-07-28 00:01:16 +00:00
parent 8d523cbcd7
commit be709c24d4
4 changed files with 69 additions and 13 deletions
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16
shell/Config.in
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@@ -178,9 +178,11 @@ config HUSH
hush is a very small shell (just 18k) and it has fairly complete
Bourne shell grammar. It even handles all the normal flow control
options such as if/then/elif/else/fi, for/in/do/done, while loops,
etc.
case/esac.
It does not handle case/esac, select, function, here documents ( <<
It uses only vfork, so it can be used on uClinux systems.
It does not handle select, functions, here documents ( <<
word ), arithmetic expansion, aliases, brace expansion, tilde
expansion, &> and >& redirection of stdout+stderr, etc.
@@ -232,6 +234,14 @@ config HUSH_LOOPS
depends on HUSH
help
Enable for, while and until loops in hush.
As of 2008-07, break and continue statements are not supported.
config HUSH_CASE
bool "Support case ... esac statement"
default n
depends on HUSH
help
Enable case ... esac statement in hush. +400 bytes.
config LASH
bool "lash"
@@ -249,7 +259,7 @@ config MSH
shell to do. It is not always pedantically correct about Bourne
shell grammar (try running the shell testscript "tests/sh.testcases"
on it and compare vs bash) but for most things it works quite well.
It also uses only vfork, so it can be used on uClinux systems.
It uses only vfork, so it can be used on uClinux systems.
comment "Bourne Shell Options"
depends on MSH || LASH || HUSH || ASH