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ash: make ${#var} unicode-aware

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2014-08-13 18:00:08 +02:00
parent 841f8331d7
commit e9ab07c211
1 changed files with 26 additions and 13 deletions
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39
shell/ash.c
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@ -2121,6 +2121,22 @@ lookupvar(const char *name)
return NULL;
}
static void reinit_unicode_for_ash(void)
{
/* Unicode support should be activated even if LANG is set
* _during_ shell execution, not only if it was set when
* shell was started. Therefore, re-check LANG every time:
*/
if (ENABLE_FEATURE_CHECK_UNICODE_IN_ENV
|| ENABLE_UNICODE_USING_LOCALE
) {
const char *s = lookupvar("LC_ALL");
if (!s) s = lookupvar("LC_CTYPE");
if (!s) s = lookupvar("LANG");
reinit_unicode(s);
}
}
/*
* Search the environment of a builtin command.
*/
@ -6798,7 +6814,15 @@ evalvar(char *p, int flags, struct strlist *var_str_list)
varunset(p, var, 0, 0);
if (subtype == VSLENGTH) {
cvtnum(varlen > 0 ? varlen : 0);
ssize_t n = varlen;
if (n > 0) {
reinit_unicode_for_ash();
if (unicode_status == UNICODE_ON) {
const char *val = lookupvar(var);
n = unicode_strlen(val);
}
}
cvtnum(n > 0 ? n : 0);
goto record;
}
@ -9657,18 +9681,7 @@ preadfd(void)
# if ENABLE_FEATURE_TAB_COMPLETION
line_input_state->path_lookup = pathval();
# endif
/* Unicode support should be activated even if LANG is set
* _during_ shell execution, not only if it was set when
* shell was started. Therefore, re-check LANG every time:
*/
if (ENABLE_FEATURE_CHECK_UNICODE_IN_ENV
|| ENABLE_UNICODE_USING_LOCALE
) {
const char *s = lookupvar("LC_ALL");
if (!s) s = lookupvar("LC_CTYPE");
if (!s) s = lookupvar("LANG");
reinit_unicode(s);
}
reinit_unicode_for_ash();
nr = read_line_input(line_input_state, cmdedit_prompt, buf, IBUFSIZ, timeout);
if (nr == 0) {
/* Ctrl+C pressed */