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hush: fix some fallout from prev commits, add testsuite
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parent
46ccdcb96e
commit
895bea2303
33
shell/hush.c
33
shell/hush.c
@ -1234,11 +1234,14 @@ static void o_addqchr(o_string *o, int ch, int quote)
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static int o_save_ptr(o_string *o, int n)
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{
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char **list = (char**)o->data;
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int string_start = ((n + 0xf) & ~0xf) * sizeof(list[0]);
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int string_len = o->length - string_start;
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int string_start;
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int string_len;
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if (!o->has_empty_slot) {
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string_start = ((n + 0xf) & ~0xf) * sizeof(list[0]);
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string_len = o->length - string_start;
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if (!(n & 0xf)) { /* 0, 0x10, 0x20...? */
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//bb_error_msg("list[%d]=%d string_start=%d (growing)", n, string_len, string_start);
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/* list[n] points to string_start, make space for 16 more pointers */
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o->maxlen += 0x10 * sizeof(list[0]);
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o->data = xrealloc(o->data, o->maxlen + 1);
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@ -1246,8 +1249,12 @@ static int o_save_ptr(o_string *o, int n)
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memmove(list + n + 0x10, list + n, string_len);
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o->length += 0x10 * sizeof(list[0]);
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}
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//else bb_error_msg("list[%d]=%d string_start=%d", n, string_len, string_start);
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} else {
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/* We have empty slot at list[n], reuse without growth */
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string_start = ((n+1 + 0xf) & ~0xf) * sizeof(list[0]); /* NB: n+1! */
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string_len = o->length - string_start;
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//bb_error_msg("list[%d]=%d string_start=%d (empty slot)", n, string_len, string_start);
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o->has_empty_slot = 0;
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}
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list[n] = (char*)string_len;
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@ -2684,18 +2691,20 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
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arg = ++p;
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} /* end of "while (SPECIAL_VAR_SYMBOL is found) ..." */
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o_debug_list("expand_vars_to_list[a]", output, n);
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o_addstr(output, arg, strlen(arg) + 1);
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o_debug_list("expand_vars_to_list[b]", output, n);
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//TESTME
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if (output->length - 1 == o_get_last_ptr(output, n)) { /* expansion is empty */
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if (!(ored_ch & 0x80)) { /* all vars were not quoted... */
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n--;
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/* allow to reuse list[n] later without re-growth */
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output->has_empty_slot = 1;
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{
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int len = strlen(arg);
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if (len) {
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o_debug_list("expand_vars_to_list[a]", output, n);
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o_addstr(output, arg, len + 1);
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o_debug_list("expand_vars_to_list[b]", output, n);
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} else if (output->length == o_get_last_ptr(output, n)) { /* expansion is empty */
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if (!(ored_ch & 0x80)) { /* all vars were not quoted... */
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n--;
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/* allow to reuse list[n] later without re-growth */
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output->has_empty_slot = 1;
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}
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}
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}
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return n;
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}
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3
shell/hush_test/hush-vars/empty.right
Normal file
3
shell/hush_test/hush-vars/empty.right
Normal file
@ -0,0 +1,3 @@
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a b c d e f 1 2 3 4 5 6 7 8 9 0 A B C D E F
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a b c d e f 1 2 3 4 5 6 7 8 9 0 A B C D E F
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a b c d e f 1 2 3 4 5 6 7 8 9 0 A B C D E F
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7
shell/hush_test/hush-vars/empty.tests
Executable file
7
shell/hush_test/hush-vars/empty.tests
Executable file
@ -0,0 +1,7 @@
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#!/bin/sh
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e=
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echo a b c d e f 1 2 3 4 5 6 7 8 9 0 A B C D E F
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echo a $e b $e c $e d $e e $e f $e 1 $e 2 $e 3 $e 4 $e 5 $e 6 $e 7 $e 8 $e 9 $e 0 $e A $e B $e C $e D $e E $e F
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echo $e a $e b $e c $e d $e e $e f $e 1 $e 2 $e 3 $e 4 $e 5 $e 6 $e 7 $e 8 $e 9 $e 0 $e A $e B $e C $e D $e E $e F
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