diff options
Diffstat (limited to 'shell')
| -rw-r--r-- | shell/hush.c | 100 |
1 files changed, 45 insertions, 55 deletions
diff --git a/shell/hush.c b/shell/hush.c index 3c67186..6cd85cc 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -5052,19 +5052,43 @@ static struct pipe *parse_stream(char **pstring, } nommu_addchr(&ctx.as_string, ch); + if (ch == '\'') { + ctx.word.has_quoted_part = 1; + next = i_getch(input); + if (next == '\'' && !ctx.pending_redirect) + goto insert_empty_quoted_str_marker; + + ch = next; + while (1) { + if (ch == EOF) { + syntax_error_unterm_ch('\''); + goto parse_error; + } + nommu_addchr(&ctx.as_string, ch); + if (ch == '\'') + break; + if (ch == SPECIAL_VAR_SYMBOL) { + /* Convert raw ^C to corresponding special variable reference */ + o_addchr(&ctx.word, SPECIAL_VAR_SYMBOL); + o_addchr(&ctx.word, SPECIAL_VAR_QUOTED_SVS); + } + o_addqchr(&ctx.word, ch); + ch = i_getch(input); + } + continue; /* get next char */ + } + next = '\0'; - if (ch != '\n') { - /* Do not break this case: - * echo '\ - * ' - * and - * echo z\\ + if (ch != '\n' && ch != '\\') { + /* Not on '\': do not break the case of "echo z\\": + * on 2nd '\', i_peek_and_eat_bkslash_nl() + * would stop and try to read next line, + * not letting the command to execute. */ - next = (ch == '\'' || ch == '\\') ? i_peek(input) : i_peek_and_eat_bkslash_nl(input); -/// + next = i_peek_and_eat_bkslash_nl(input); } - is_special = "{}<>;&|()#'" /* special outside of "str" */ + is_special = "{}<>;&|()#" /* special outside of "str" */ "\\$\"" IF_HUSH_TICK("`") /* always special */ SPECIAL_VAR_SYMBOL_STR; /* Are { and } special here? */ @@ -5252,7 +5276,7 @@ static struct pipe *parse_stream(char **pstring, return ctx.list_head; } } - skip_end_trigger: + if (is_blank) continue; @@ -5278,7 +5302,7 @@ static struct pipe *parse_stream(char **pstring, #endif if (parse_redirect(&ctx, redir_fd, redir_style, input)) goto parse_error; - continue; /* back to top of while (1) */ + continue; /* get next char */ case '<': redir_fd = redirect_opt_num(&ctx.word); if (done_word(&ctx)) { @@ -5304,7 +5328,7 @@ static struct pipe *parse_stream(char **pstring, #endif if (parse_redirect(&ctx, redir_fd, redir_style, input)) goto parse_error; - continue; /* back to top of while (1) */ + continue; /* get next char */ case '#': if (ctx.word.length == 0 && !ctx.word.has_quoted_part) { /* skip "#comment" */ @@ -5325,23 +5349,11 @@ static struct pipe *parse_stream(char **pstring, if (ch == EOF) break; } - continue; /* back to top of while (1) */ - } - break; -#if 0 /* looks like we never reach this code */ - case '\\': - if (next == '\n') { - /* It's "\<newline>" */ -#if !BB_MMU - /* Remove trailing '\' from ctx.as_string */ - ctx.as_string.data[--ctx.as_string.length] = '\0'; -#endif - ch = i_getch(input); /* eat it */ - continue; /* back to top of while (1) */ + continue; /* get next char */ } break; -#endif } + skip_end_trigger: if (ctx.is_assignment == MAYBE_ASSIGNMENT /* check that we are not in word in "a=1 2>word b=1": */ @@ -5366,20 +5378,19 @@ static struct pipe *parse_stream(char **pstring, o_addchr(&ctx.word, ch); continue; /* get next char */ case '\\': - if (next == EOF) { + /*nommu_addchr(&ctx.as_string, '\\'); - already done */ + o_addchr(&ctx.word, '\\'); + ch = i_getch(input); + if (ch == EOF) { //TODO: in ". FILE" containing "cmd\" (no newline) bash ignores last "\" syntax_error("\\<eof>"); xfunc_die(); } - ch = i_getch(input); - /* note: ch != '\n' (that case does not reach this place) */ - o_addchr(&ctx.word, '\\'); - /*nommu_addchr(&ctx.as_string, '\\'); - already done */ - o_addchr(&ctx.word, ch); - nommu_addchr(&ctx.as_string, ch); /* Example: echo Hello \2>file * we need to know that word 2 is quoted */ ctx.word.has_quoted_part = 1; + nommu_addchr(&ctx.as_string, ch); + o_addchr(&ctx.word, ch); continue; /* get next char */ case '$': if (!parse_dollar(&ctx.as_string, &ctx.word, input, /*quote_mask:*/ 0)) { @@ -5388,33 +5399,12 @@ static struct pipe *parse_stream(char **pstring, goto parse_error; } continue; /* get next char */ - case '\'': - ctx.word.has_quoted_part = 1; - if (next == '\'' && !ctx.pending_redirect) - goto insert_empty_quoted_str_marker; - while (1) { - ch = i_getch(input); - if (ch == EOF) { - syntax_error_unterm_ch('\''); - goto parse_error; - } - nommu_addchr(&ctx.as_string, ch); - if (ch == '\'') - break; - if (ch == SPECIAL_VAR_SYMBOL) { - /* Convert raw ^C to corresponding special variable reference */ - o_addchr(&ctx.word, SPECIAL_VAR_SYMBOL); - o_addchr(&ctx.word, SPECIAL_VAR_QUOTED_SVS); - } - o_addqchr(&ctx.word, ch); - } - continue; /* get next char */ case '"': ctx.word.has_quoted_part = 1; if (next == '"' && !ctx.pending_redirect) { + i_getch(input); /* eat second " */ insert_empty_quoted_str_marker: nommu_addchr(&ctx.as_string, next); - i_getch(input); /* eat second ' */ o_addchr(&ctx.word, SPECIAL_VAR_SYMBOL); o_addchr(&ctx.word, SPECIAL_VAR_SYMBOL); continue; /* get next char */ |