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authorDenys Vlasenko2010-09-09 12:40:03 +0200
committerDenys Vlasenko2010-09-09 12:40:03 +0200
commit77a7b5519cace3722832d03ce09faa950841b509 (patch)
treeef31619a60d06f5b796e8179a5d7533a0b59adab /shell/hush.c
parent77d48726917e6493a8a077be93bb07b22fd2c209 (diff)
downloadbusybox-77a7b5519cace3722832d03ce09faa950841b509.zip
busybox-77a7b5519cace3722832d03ce09faa950841b509.tar.gz
hush: straighten out the logic in parse_stream
function old new delta parse_stream 2399 2354 -45 Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Diffstat (limited to 'shell/hush.c')
-rw-r--r--shell/hush.c27
1 files changed, 10 insertions, 17 deletions
diff --git a/shell/hush.c b/shell/hush.c
index 1ba72f0..d76fe85 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -3833,11 +3833,9 @@ static struct pipe *parse_stream(char **pstring,
{
struct parse_context ctx;
o_string dest = NULL_O_STRING;
- int is_in_dquote;
int heredoc_cnt;
- /* Double-quote state is handled in the state variable is_in_dquote.
- * A single-quote triggers a bypass of the main loop until its mate is
+ /* Single-quote triggers a bypass of the main loop until its mate is
* found. When recursing, quote state is passed in via dest->o_expflags.
*/
debug_printf_parse("parse_stream entered, end_trigger='%c'\n",
@@ -3851,15 +3849,17 @@ static struct pipe *parse_stream(char **pstring,
/* We used to separate words on $IFS here. This was wrong.
* $IFS is used only for word splitting when $var is expanded,
- * here we should use blank chars as separators, not $iFS
+ * here we should use blank chars as separators, not $IFS
*/
- reset:
+
+ reset: /* we come back here only on syntax errors in interactive shell */
+
#if ENABLE_HUSH_INTERACTIVE
input->promptmode = 0; /* PS1 */
#endif
- /* dest.o_assignment = MAYBE_ASSIGNMENT; - already is */
+ if (MAYBE_ASSIGNMENT != 0)
+ dest.o_assignment = MAYBE_ASSIGNMENT;
initialize_context(&ctx);
- is_in_dquote = 0;
heredoc_cnt = 0;
while (1) {
const char *is_blank;
@@ -3869,14 +3869,6 @@ static struct pipe *parse_stream(char **pstring,
int redir_fd;
redir_type redir_style;
- if (is_in_dquote) {
- /* dest.has_quoted_part = 1; - already is (see below) */
- if (parse_stream_dquoted(&ctx.as_string, &dest, input, '"')) {
- goto parse_error;
- }
- /* We reached closing '"' */
- is_in_dquote = 0;
- }
ch = i_getch(input);
debug_printf_parse(": ch=%c (%d) escape=%d\n",
ch, ch, !!(dest.o_expflags & EXP_FLAG_ESC_GLOB_CHARS));
@@ -4176,9 +4168,10 @@ static struct pipe *parse_stream(char **pstring,
break;
case '"':
dest.has_quoted_part = 1;
- is_in_dquote ^= 1; /* invert */
if (dest.o_assignment == NOT_ASSIGNMENT)
dest.o_expflags ^= EXP_FLAG_ESC_GLOB_CHARS;
+ if (parse_stream_dquoted(&ctx.as_string, &dest, input, '"'))
+ goto parse_error;
break;
#if ENABLE_HUSH_TICK
case '`': {
@@ -4558,7 +4551,7 @@ static NOINLINE const char *expand_one_var(char **to_be_freed_pp, char *arg, cha
/* Look up the variable in question */
if (isdigit(var[0])) {
- /* parse_dollar() should have vetted var for us */
+ /* parse_dollar should have vetted var for us */
int n = xatoi_positive(var);
if (n < G.global_argc)
val = G.global_argv[n];