diff options
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 84 |
1 files changed, 46 insertions, 38 deletions
diff --git a/shell/hush.c b/shell/hush.c index 61c03f7..aab6ff3 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -2836,14 +2836,13 @@ static struct pipe *new_pipe(void) static void initialize_context(struct p_context *ctx) { - ctx->pipe = NULL; - ctx->pending_redirect = NULL; ctx->child = NULL; - ctx->list_head = new_pipe(); - ctx->pipe = ctx->list_head; + ctx->pipe = ctx->list_head = new_pipe(); + ctx->pending_redirect = NULL; ctx->res_w = RES_NONE; - ctx->stack = NULL; + //only ctx->parse_type is not touched... is this intentional? ctx->old_flag = 0; + ctx->stack = NULL; done_command(ctx); /* creates the memory for working child */ } @@ -2886,44 +2885,44 @@ static int reserved_word(o_string *dest, struct p_context *ctx) const struct reserved_combo *r; for (r = reserved_list; r < reserved_list + NRES; r++) { - if (strcmp(dest->data, r->literal) == 0) { - debug_printf("found reserved word %s, code %d\n", r->literal, r->code); - if (r->flag & FLAG_START) { - struct p_context *new = xmalloc(sizeof(struct p_context)); - debug_printf("push stack\n"); + if (strcmp(dest->data, r->literal) != 0) + continue; + debug_printf("found reserved word %s, code %d\n", r->literal, r->code); + if (r->flag & FLAG_START) { + struct p_context *new; + debug_printf("push stack\n"); #if ENABLE_HUSH_LOOPS - if (ctx->res_w == RES_IN || ctx->res_w == RES_FOR) { - syntax(); - free(new); - ctx->res_w = RES_SNTX; - b_reset(dest); - return 1; - } -#endif - *new = *ctx; /* physical copy */ - initialize_context(ctx); - ctx->stack = new; - } else if (ctx->res_w == RES_NONE || !(ctx->old_flag & (1 << r->code))) { + if (ctx->res_w == RES_IN || ctx->res_w == RES_FOR) { syntax(); ctx->res_w = RES_SNTX; b_reset(dest); return 1; } - ctx->res_w = r->code; - ctx->old_flag = r->flag; - if (ctx->old_flag & FLAG_END) { - struct p_context *old; - debug_printf("pop stack\n"); - done_pipe(ctx, PIPE_SEQ); - old = ctx->stack; - old->child->group = ctx->list_head; - old->child->subshell = 0; - *ctx = *old; /* physical copy */ - free(old); - } +#endif + new = xmalloc(sizeof(*new)); + *new = *ctx; /* physical copy */ + initialize_context(ctx); + ctx->stack = new; + } else if (ctx->res_w == RES_NONE || !(ctx->old_flag & (1 << r->code))) { + syntax(); + ctx->res_w = RES_SNTX; b_reset(dest); return 1; } + ctx->res_w = r->code; + ctx->old_flag = r->flag; + if (ctx->old_flag & FLAG_END) { + struct p_context *old; + debug_printf("pop stack\n"); + done_pipe(ctx, PIPE_SEQ); + old = ctx->stack; + old->child->group = ctx->list_head; + old->child->subshell = 0; + *ctx = *old; /* physical copy */ + free(old); + } + b_reset(dest); + return 1; } return 0; } @@ -3155,7 +3154,8 @@ static int process_command_subs(o_string *dest, struct p_context *ctx, /* recursion to generate command */ retcode = parse_stream(&result, &inner, input, subst_end); - if (retcode != 0) return retcode; /* syntax error or EOF */ + if (retcode != 0) + return retcode; /* syntax error or EOF */ done_word(&result, &inner); done_pipe(&inner, PIPE_SEQ); b_free(&result); @@ -3357,9 +3357,15 @@ static int parse_stream(o_string *dest, struct p_context *ctx, debug_printf_parse("parse_stream entered, end_trigger='%s'\n", end_trigger); - while ((ch = b_getch(input)) != EOF) { - m = charmap[ch]; - next = (ch == '\n') ? '\0' : b_peek(input); + while (1) { + ch = b_getch(input); + m = CHAR_IFS; + next = '\0'; + if (ch != EOF) { + m = charmap[ch]; + if (ch != '\n') + next = b_peek(input); + } debug_printf_parse(": ch=%c (%d) m=%d quote=%d\n", ch, ch, m, dest->quote); if (m == CHAR_ORDINARY @@ -3373,6 +3379,8 @@ static int parse_stream(o_string *dest, struct p_context *ctx, debug_printf_parse("parse_stream return 1: done_word!=0\n"); return 1; } + if (ch == EOF) + break; /* If we aren't performing a substitution, treat * a newline as a command separator. * [why we don't handle it exactly like ';'? --vda] */ |