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hush: reduce #ifdef forest a bit, rename handle_dollar -> parse_dollar
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
5ae8f1cdbe
commit
2e48d536ce
45
shell/hush.c
45
shell/hush.c
@ -50,6 +50,7 @@
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*
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* Bash compat TODO:
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* redirection of stdout+stderr: &> and >&
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* subst operator: ${var/[/]expr/expr}
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* brace expansion: one/{two,three,four}
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* reserved words: function select
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* advanced test: [[ ]]
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@ -1830,6 +1831,7 @@ static void o_addstr(o_string *o, const char *str)
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{
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o_addblock(o, str, strlen(str));
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}
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#if !BB_MMU
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static void nommu_addchr(o_string *o, int ch)
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{
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@ -2618,7 +2620,7 @@ static NOINLINE int expand_vars_to_list(o_string *output, int n, char *arg, char
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/* lookup the variable in question */
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if (isdigit(var[0])) {
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/* handle_dollar() should have vetted var for us */
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/* parse_dollar() should have vetted var for us */
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i = xatoi_u(var);
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if (i < G.global_argc)
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val = G.global_argv[i];
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@ -4545,11 +4547,11 @@ static void debug_print_tree(struct pipe *pi, int lvl)
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fprintf(stderr, " group %s: (argv=%p)%s%s\n",
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CMDTYPE[command->cmd_type],
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argv
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#if !BB_MMU
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# if !BB_MMU
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, " group_as_string:", command->group_as_string
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#else
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# else
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, "", ""
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#endif
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# endif
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);
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debug_print_tree(command->group, lvl+1);
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prn++;
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@ -5988,18 +5990,18 @@ static int add_till_closing_bracket(o_string *dest, struct in_str *input, unsign
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/* Return code: 0 for OK, 1 for syntax error */
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#if BB_MMU
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#define handle_dollar(as_string, dest, input) \
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handle_dollar(dest, input)
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#define parse_dollar(as_string, dest, input) \
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parse_dollar(dest, input)
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#define as_string NULL
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#endif
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static int handle_dollar(o_string *as_string,
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static int parse_dollar(o_string *as_string,
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o_string *dest,
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struct in_str *input)
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{
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int ch = i_peek(input); /* first character after the $ */
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unsigned char quote_mask = dest->o_escape ? 0x80 : 0;
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debug_printf_parse("handle_dollar entered: ch='%c'\n", ch);
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debug_printf_parse("parse_dollar entered: ch='%c'\n", ch);
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if (isalpha(ch)) {
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ch = i_getch(input);
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nommu_addchr(as_string, ch);
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@ -6047,7 +6049,7 @@ static int handle_dollar(o_string *as_string,
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if (!strchr(_SPECIAL_VARS_STR, ch) && !isalnum(ch)) { /* not one of those */
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bad_dollar_syntax:
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syntax_error_unterm_str("${name}");
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debug_printf_parse("handle_dollar return 1: unterminated ${name}\n");
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debug_printf_parse("parse_dollar return 1: unterminated ${name}\n");
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return 1;
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}
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ch |= quote_mask;
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@ -6129,13 +6131,11 @@ static int handle_dollar(o_string *as_string,
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if (!BB_MMU)
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pos = dest->length;
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add_till_closing_bracket(dest, input, ')' | DOUBLE_CLOSE_CHAR_FLAG);
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#if !BB_MMU
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if (as_string) {
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o_addstr(as_string, dest->data + pos);
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o_addchr(as_string, ')');
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o_addchr(as_string, ')');
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}
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#endif
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o_addchr(dest, SPECIAL_VAR_SYMBOL);
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break;
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}
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@ -6146,12 +6146,10 @@ static int handle_dollar(o_string *as_string,
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if (!BB_MMU)
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pos = dest->length;
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add_till_closing_bracket(dest, input, ')');
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#if !BB_MMU
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if (as_string) {
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o_addstr(as_string, dest->data + pos);
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o_addchr(as_string, ')');
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}
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#endif
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o_addchr(dest, SPECIAL_VAR_SYMBOL);
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# endif
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break;
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@ -6174,7 +6172,7 @@ static int handle_dollar(o_string *as_string,
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default:
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o_addQchr(dest, '$');
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}
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debug_printf_parse("handle_dollar return 0\n");
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debug_printf_parse("parse_dollar return 0\n");
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return 0;
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#undef as_string
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}
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@ -6237,9 +6235,9 @@ static int parse_stream_dquoted(o_string *as_string,
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goto again;
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}
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if (ch == '$') {
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if (handle_dollar(as_string, dest, input) != 0) {
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if (parse_dollar(as_string, dest, input) != 0) {
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debug_printf_parse("parse_stream_dquoted return 1: "
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"handle_dollar returned non-0\n");
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"parse_dollar returned non-0\n");
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return 1;
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}
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goto again;
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@ -6602,9 +6600,9 @@ static struct pipe *parse_stream(char **pstring,
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#endif
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break;
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case '$':
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if (handle_dollar(&ctx.as_string, &dest, input) != 0) {
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if (parse_dollar(&ctx.as_string, &dest, input) != 0) {
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debug_printf_parse("parse_stream parse error: "
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"handle_dollar returned non-0\n");
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"parse_dollar returned non-0\n");
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goto parse_error;
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}
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break;
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@ -6630,19 +6628,16 @@ static struct pipe *parse_stream(char **pstring,
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break;
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#if ENABLE_HUSH_TICK
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case '`': {
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#if !BB_MMU
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int pos;
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#endif
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unsigned pos;
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o_addchr(&dest, SPECIAL_VAR_SYMBOL);
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o_addchr(&dest, '`');
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#if !BB_MMU
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pos = dest.length;
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#endif
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add_till_backquote(&dest, input);
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#if !BB_MMU
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# if !BB_MMU
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o_addstr(&ctx.as_string, dest.data + pos);
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o_addchr(&ctx.as_string, '`');
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#endif
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# endif
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o_addchr(&dest, SPECIAL_VAR_SYMBOL);
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//debug_printf_subst("SUBST RES3 '%s'\n", dest.data + pos);
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break;
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