diff options
| -rw-r--r-- | shell/hush.c | 77 |
1 files changed, 42 insertions, 35 deletions
diff --git a/shell/hush.c b/shell/hush.c index 01d8f5935..533d45ac3 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -2694,6 +2694,42 @@ static int i_peek2(struct in_str *i) return ch; } +static int i_getch_and_eat_bkslash_nl(struct in_str *input) +{ + for (;;) { + int ch, ch2; + + ch = i_getch(input); + if (ch != '\\') + return ch; + ch2 = i_peek(input); + if (ch2 != '\n') + return ch; + /* backslash+newline, skip it */ + i_getch(input); + } +} + +/* Note: this function _eats_ \<newline> pairs, safe to use plain + * i_getch() after it instead of i_getch_and_eat_bkslash_nl(). + */ +static int i_peek_and_eat_bkslash_nl(struct in_str *input) +{ + for (;;) { + int ch, ch2; + + ch = i_peek(input); + if (ch != '\\') + return ch; + ch2 = i_peek2(input); + if (ch2 != '\n') + return ch; + /* backslash+newline, skip it */ + i_getch(input); + i_getch(input); + } +} + static void setup_file_in_str(struct in_str *i, FILE *f) { memset(i, 0, sizeof(*i)); @@ -4014,7 +4050,7 @@ static int parse_redirect(struct parse_context *ctx, if (dup_num == REDIRFD_SYNTAX_ERR) return 1; } else { - int ch = i_peek(input); + int ch = i_peek_and_eat_bkslash_nl(input); dup_num = (ch == '-'); /* HEREDOC_SKIPTABS bit is 1 */ if (dup_num) { /* <<-... */ ch = i_getch(input); @@ -4024,7 +4060,7 @@ static int parse_redirect(struct parse_context *ctx, } if (style == REDIRECT_OVERWRITE && dup_num == REDIRFD_TO_FILE) { - int ch = i_peek(input); + int ch = i_peek_and_eat_bkslash_nl(input); if (ch == '|') { /* >|FILE redirect ("clobbering" >). * Since we do not support "set -o noclobber" yet, @@ -4343,39 +4379,6 @@ static int parse_group(o_string *dest, struct parse_context *ctx, /* command remains "open", available for possible redirects */ } -static int i_getch_and_eat_bkslash_nl(struct in_str *input) -{ - for (;;) { - int ch, ch2; - - ch = i_getch(input); - if (ch != '\\') - return ch; - ch2 = i_peek(input); - if (ch2 != '\n') - return ch; - /* backslash+newline, skip it */ - i_getch(input); - } -} - -static int i_peek_and_eat_bkslash_nl(struct in_str *input) -{ - for (;;) { - int ch, ch2; - - ch = i_peek(input); - if (ch != '\\') - return ch; - ch2 = i_peek2(input); - if (ch2 != '\n') - return ch; - /* backslash+newline, skip it */ - i_getch(input); - i_getch(input); - } -} - #if ENABLE_HUSH_TICK || ENABLE_FEATURE_SH_MATH || ENABLE_HUSH_DOLLAR_OPS /* Subroutines for copying $(...) and `...` things */ static int add_till_backquote(o_string *dest, struct in_str *input, int in_dquote); @@ -5181,6 +5184,8 @@ static struct pipe *parse_stream(char **pstring, goto parse_error; } redir_style = REDIRECT_OVERWRITE; + if (next == '\\') + next = i_peek_and_eat_bkslash_nl(input); if (next == '>') { redir_style = REDIRECT_APPEND; ch = i_getch(input); @@ -5201,6 +5206,8 @@ static struct pipe *parse_stream(char **pstring, goto parse_error; } redir_style = REDIRECT_INPUT; + if (next == '\\') + next = i_peek_and_eat_bkslash_nl(input); if (next == '<') { redir_style = REDIRECT_HEREDOC; heredoc_cnt++; |