hush: rename ->o_quote to ->o_escape
hush_test/hush-arith/*: new tests for arithmetic evaluation
This commit is contained in:
Denis Vlasenko
56
shell/hush.c
56
shell/hush.c
@@ -392,9 +392,9 @@ typedef struct o_string {
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char *data;
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int length; /* position where data is appended */
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int maxlen;
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/* Misnomer! it's not "quoting", it's "protection against globbing"!
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* (by prepending \ to *, ?, [ and to \ too) */
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smallint o_quote;
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/* Protect newly added chars against globbing
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* (by prepending \ to *, ?, [, \) */
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smallint o_escape;
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smallint o_glob;
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smallint nonnull;
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smallint has_empty_slot;
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@@ -1440,7 +1440,7 @@ static void o_addqchr(o_string *o, int ch)
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static void o_addQchr(o_string *o, int ch)
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{
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int sz = 1;
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if (o->o_quote && strchr("*?[\\", ch)) {
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if (o->o_escape && strchr("*?[\\", ch)) {
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sz++;
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o->data[o->length] = '\\';
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o->length++;
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@@ -1453,7 +1453,7 @@ static void o_addQchr(o_string *o, int ch)
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static void o_addQstr(o_string *o, const char *str, int len)
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{
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if (!o->o_quote) {
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if (!o->o_escape) {
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o_addstr(o, str, len);
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return;
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}
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@@ -1668,7 +1668,7 @@ static int expand_on_ifs(o_string *output, int n, const char *str)
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while (1) {
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int word_len = strcspn(str, G.ifs);
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if (word_len) {
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if (output->o_quote || !output->o_glob)
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if (output->o_escape || !output->o_glob)
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o_addQstr(output, str, word_len);
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else /* protect backslashes against globbing up :) */
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o_addstr_duplicate_backslash(output, str, word_len);
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@@ -1751,9 +1751,9 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
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break;
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ored_ch |= first_ch; /* do it for "$@" _now_, when we know it's not empty */
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if (!(first_ch & 0x80)) { /* unquoted $* or $@ */
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smallint sv = output->o_quote;
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/* unquoted var's contents should be globbed, so don't quote */
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output->o_quote = 0;
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smallint sv = output->o_escape;
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/* unquoted var's contents should be globbed, so don't escape */
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output->o_escape = 0;
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while (G.global_argv[i]) {
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n = expand_on_ifs(output, n, G.global_argv[i]);
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debug_printf_expand("expand_vars_to_list: argv %d (last %d)\n", i, G.global_argc - 1);
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@@ -1766,7 +1766,7 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
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debug_print_list("expand_vars_to_list[3]", output, n);
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}
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}
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output->o_quote = sv;
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output->o_escape = sv;
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} else
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/* If or_mask is nonzero, we handle assignment 'a=....$@.....'
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* and in this case should treat it like '$*' - see 'else...' below */
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@@ -1945,17 +1945,17 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
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store_val:
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#endif
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if (!(first_ch & 0x80)) { /* unquoted $VAR */
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debug_printf_expand("unquoted '%s', output->o_quote:%d\n", val, output->o_quote);
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debug_printf_expand("unquoted '%s', output->o_escape:%d\n", val, output->o_escape);
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if (val) {
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/* unquoted var's contents should be globbed, so don't quote */
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smallint sv = output->o_quote;
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output->o_quote = 0;
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/* unquoted var's contents should be globbed, so don't escape */
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smallint sv = output->o_escape;
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output->o_escape = 0;
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n = expand_on_ifs(output, n, val);
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val = NULL;
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output->o_quote = sv;
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output->o_escape = sv;
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}
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} else { /* quoted $VAR, val will be appended below */
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debug_printf_expand("quoted '%s', output->o_quote:%d\n", val, output->o_quote);
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debug_printf_expand("quoted '%s', output->o_escape:%d\n", val, output->o_escape);
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}
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} /* default: */
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} /* switch (char after <SPECIAL_VAR_SYMBOL>) */
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@@ -1999,7 +1999,7 @@ static char **expand_variables(char **argv, int or_mask)
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o_string output = NULL_O_STRING;
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if (or_mask & 0x100) {
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output.o_quote = 1; /* protect against globbing for "$var" */
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output.o_escape = 1; /* protect against globbing for "$var" */
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/* (unquoted $var will temporarily switch it off) */
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output.o_glob = 1;
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}
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@@ -3979,7 +3979,7 @@ static int handle_dollar(o_string *dest, struct in_str *input)
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{
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int expansion;
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int ch = i_peek(input); /* first character after the $ */
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unsigned char quote_mask = dest->o_quote ? 0x80 : 0;
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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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if (isalpha(ch)) {
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@@ -4143,7 +4143,7 @@ static int parse_stream_dquoted(o_string *dest, struct in_str *input, int dquote
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if (ch == dquote_end) { /* may be only '"' or EOF */
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dest->nonnull = 1;
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if (dest->o_assignment == NOT_ASSIGNMENT)
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dest->o_quote ^= 1;
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dest->o_escape ^= 1;
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debug_printf_parse("parse_stream_dquoted return 0\n");
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return 0;
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}
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@@ -4157,8 +4157,8 @@ static int parse_stream_dquoted(o_string *dest, struct in_str *input, int dquote
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if (ch != '\n') {
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next = i_peek(input);
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}
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debug_printf_parse(": ch=%c (%d) m=%d quote=%d\n",
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ch, ch, m, dest->o_quote);
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debug_printf_parse(": ch=%c (%d) m=%d escape=%d\n",
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ch, ch, m, dest->o_escape);
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/* Basically, checking every CHAR_SPECIAL char except '"' */
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if (ch == '\\') {
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if (next == EOF) {
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@@ -4225,13 +4225,13 @@ static int parse_stream(o_string *dest, struct parse_context *ctx,
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int is_in_dquote;
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int next;
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/* Only double-quote state is handled in the state variable dest->o_quote.
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/* Double-quote state is handled in the state variable is_in_dquote.
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* A single-quote triggers a bypass of the main loop until its mate is
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* found. When recursing, quote state is passed in via dest->o_quote. */
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* found. When recursing, quote state is passed in via dest->o_escape. */
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debug_printf_parse("parse_stream entered, end_trigger='%s' dest->o_assignment:%d\n", end_trigger, dest->o_assignment);
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is_in_dquote = dest->o_quote;
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is_in_dquote = dest->o_escape;
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while (1) {
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if (is_in_dquote) {
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if (parse_stream_dquoted(dest, input, '"'))
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@@ -4248,8 +4248,8 @@ static int parse_stream(o_string *dest, struct parse_context *ctx,
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next = i_peek(input);
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}
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}
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debug_printf_parse(": ch=%c (%d) m=%d quote=%d\n",
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ch, ch, m, dest->o_quote);
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debug_printf_parse(": ch=%c (%d) m=%d escape=%d\n",
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ch, ch, m, dest->o_escape);
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if (m == CHAR_ORDINARY) {
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o_addQchr(dest, ch);
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if ((dest->o_assignment == MAYBE_ASSIGNMENT
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@@ -4365,7 +4365,7 @@ static int parse_stream(o_string *dest, struct parse_context *ctx,
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dest->nonnull = 1;
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is_in_dquote ^= 1; /* invert */
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if (dest->o_assignment == NOT_ASSIGNMENT)
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dest->o_quote ^= 1;
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dest->o_escape ^= 1;
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break;
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#if ENABLE_HUSH_TICK
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case '`': {
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@@ -4594,7 +4594,7 @@ static int parse_and_run_stream(struct in_str *inp, int parse_flag)
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}
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#endif
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/*temp.nonnull = 0; - o_free does it below */
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/*temp.o_quote = 0; - o_free does it below */
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/*temp.o_escape = 0; - o_free does it below */
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free_pipe_list(ctx.list_head, /* indent: */ 0);
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/* Discard all unprocessed line input, force prompt on */
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inp->p = NULL;
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138
shell/hush_test/hush-arith/arith.right
Normal file
138
shell/hush_test/hush-arith/arith.right
Normal file
@@ -0,0 +1,138 @@
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Format: 'expected actual'
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163 163
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4 4
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16 16
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8 8
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2 2
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4 4
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2 2
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2 2
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1 1
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0 0
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0 0
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0 0
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1 1
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1 1
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2 2
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-3 -3
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-2 -2
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1 1
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0 0
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2 2
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131072 131072
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29 29
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33 33
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49 49
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1 1
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1 1
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0 0
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0 0
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1 1
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1 1
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1 1
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2 2
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3 3
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1 1
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58 58
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2 2
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60 60
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1 1
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256 256
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16 16
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62 62
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4 4
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29 29
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5 5
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-4 -4
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4 4
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1 1
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32 32
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32 32
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1 1
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1 1
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32 32
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20 20
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30 30
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20 20
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30 30
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hush: arith: syntax error
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6 6
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6,5,3 6,5,3
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263 263
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255 255
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40 40
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hush: arith: syntax error
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hush: arith: divide by zero
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hush: can't exec 'let': No such file or directory
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hush: arith: syntax error
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hush: can't exec 'let': No such file or directory
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abc
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def
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ghi
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hush: arith: syntax error
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16 16
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hush: arith: syntax error
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hush: arith: syntax error
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hush: arith: syntax error
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9 9
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hush: arith: syntax error
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hush: arith: syntax error
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9 9
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9 9
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9 9
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7 7
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7
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4 4
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32767 32767
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32768 32768
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131072 131072
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2147483647 2147483647
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1 1
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4 4
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4 4
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5 5
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5 5
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4 4
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3 3
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3 3
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4 4
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4 4
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hush: arith: syntax error
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hush: arith: syntax error
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hush: arith: syntax error
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hush: arith: syntax error
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hush: arith: syntax error
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4 4
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7 7
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-7 -7
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hush: arith: syntax error
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hush: arith: syntax error
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hush: arith: syntax error
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hush: arith: syntax error
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6 6
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3 3
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7 7
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4 4
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0 0
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3 3
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7 7
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2 2
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-2 -2
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1 1
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hush: arith: syntax error
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hush: arith: syntax error
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hush: arith: syntax error
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hush: arith: syntax error
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hush: arith: syntax error
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5 5
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1 1
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4 4
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0 0
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hush: arith: syntax error
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hush: arith: syntax error
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8 12
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hush: arith: syntax error
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42
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42
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42
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hush: can't exec 'a[b[c]d]=e': No such file or directory
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302
shell/hush_test/hush-arith/arith.tests
Executable file
302
shell/hush_test/hush-arith/arith.tests
Executable file
@@ -0,0 +1,302 @@
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#ash# set +o posix
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#ash# declare -i iv jv
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echo "Format: 'expected actual'"
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iv=$(( 3 + 5 * 32 ))
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echo 163 $iv
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#ash# iv=iv+3
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#ash# echo 166 $iv
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iv=2
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jv=iv
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: $((jv *= 2)) ##hush## let "jv *= 2"
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echo 4 $jv
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jv=$(( $jv << 2 ))
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echo 16 $jv
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: $((jv=$jv / 2)) ##hush## let jv="$jv / 2"
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echo 8 $jv
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#ash# jv="jv >> 2"
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: $((jv=jv >> 2)) ##hush## let jv="jv >> 2"
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echo 2 $jv
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iv=$((iv+ $jv))
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echo 4 $iv
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echo 2 $((iv -= jv))
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echo 2 $iv
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echo 1 $(( iv == jv ))
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echo 0 $(( iv != $jv ))
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echo 0 $(( iv < jv ))
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echo 0 $(( $iv > $jv ))
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echo 1 $(( iv <= $jv ))
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echo 1 $(( $iv >= jv ))
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echo 2 $jv
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echo -3 $(( ~$jv ))
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echo -2 $(( ~1 ))
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echo 1 $(( ! 0 ))
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echo 0 $(( jv % 2 ))
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echo 2 $(( $iv % 4 ))
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echo 131072 $(( iv <<= 16 ))
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echo 29 $(( iv %= 33 ))
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echo 33 $(( 33 & 55 ))
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echo 49 $(( 33 | 17 ))
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echo 1 $(( iv && $jv ))
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echo 1 $(( $iv || jv ))
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echo 0 $(( iv && 0 ))
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echo 0 $(( iv & 0 ))
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echo 1 $(( iv && 1 ))
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echo 1 $(( iv & 1 ))
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echo 1 $(( $jv || 0 ))
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echo 2 $(( jv | 0 ))
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echo 3 $(( jv | 1 ))
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echo 1 $(( $jv || 1 ))
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: $((iv *= jv)) ##hush## let 'iv *= jv'
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echo 58 $iv
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echo 2 $jv
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: $((jv += $iv)) ##hush## let "jv += $iv"
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echo 60 $jv
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echo 1 $(( jv /= iv ))
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echo 256 $(( jv <<= 8 ))
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echo 16 $(( jv >>= 4 ))
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echo 62 $(( iv |= 4 ))
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echo 4 $(( iv &= 4 ))
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echo 29 $(( iv += (jv + 9)))
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echo 5 $(( (iv + 4) % 7 ))
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# unary plus, minus
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echo -4 $(( +4 - 8 ))
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echo 4 $(( -4 + 8 ))
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# conditional expressions
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echo 1 $(( 4<5 ? 1 : 32))
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echo 32 $(( 4>5 ? 1 : 32))
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echo 32 $(( 4>(2+3) ? 1 : 32))
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echo 1 $(( 4<(2+3) ? 1 : 32))
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echo 1 $(( (2+2)<(2+3) ? 1 : 32))
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echo 32 $(( (2+2)>(2+3) ? 1 : 32))
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# check that the unevaluated part of the ternary operator does not do
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# evaluation or assignment
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x=i+=2
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y=j+=2
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#ash# declare -i i=1 j=1
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i=1
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j=1
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echo 20 $((1 ? 20 : (x+=2)))
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#ash# echo $i,$x # ash mishandles this
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echo 30 $((0 ? (y+=2) : 30))
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#ash# echo $j,$y # ash mishandles this
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x=i+=2
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y=j+=2
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#ash# declare -i i=1 j=1
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i=1
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j=1
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echo 20 $((1 ? 20 : (x+=2)))
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#ash# echo $i,$x # ash mishandles this
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echo 30 $((0 ? (y+=2) : 30))
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#ash# echo $i,$y # ash mishandles this
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# check precedence of assignment vs. conditional operator
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# should be an error
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#ash# declare -i x=2
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x=2
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#ashnote# bash reports error but continues, ash aborts - using subshell to 'emulate' bash:
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( y=$((1 ? 20 : x+=2)) )
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# check precedence of assignment vs. conditional operator
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#ash# declare -i x=2
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x=2
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# ash says "line NNN: syntax error: 0 ? x+=2 : 20"
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#ash# echo 20 $((0 ? x+=2 : 20))
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# associativity of assignment-operator operator
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#ash# declare -i i=1 j=2 k=3
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i=1
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j=2
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k=3
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echo 6 $((i += j += k))
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echo 6,5,3 $i,$j,$k
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# octal, hex
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echo 263 $(( 0x100 | 007 ))
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echo 255 $(( 0xff ))
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#ash# echo 255 $(( 16#ff ))
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#ash# echo 127 $(( 16#FF/2 ))
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#ash# echo 36 $(( 8#44 ))
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echo 40 $(( 8 ^ 32 ))
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#ash# # other bases
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#ash# echo 10 $(( 16#a ))
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#ash# echo 10 $(( 32#a ))
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#ash# echo 10 $(( 56#a ))
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#ash# echo 10 $(( 64#a ))
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#ash#
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#ash# echo 10 $(( 16#A ))
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#ash# echo 10 $(( 32#A ))
|
||||
#ash# echo 36 $(( 56#A ))
|
||||
#ash# echo 36 $(( 64#A ))
|
||||
#ash#
|
||||
#ash# echo 62 $(( 64#@ ))
|
||||
#ash# echo 63 $(( 64#_ ))
|
||||
|
||||
#ash# # weird bases (error)
|
||||
#ash# echo $(( 3425#56 ))
|
||||
|
||||
#ash# # missing number after base
|
||||
#ash# echo 0 $(( 2# ))
|
||||
|
||||
# these should generate errors
|
||||
( echo $(( 7 = 43 )) )
|
||||
#ash# echo $(( 2#44 ))
|
||||
( echo $(( 44 / 0 )) )
|
||||
( let 'jv += $iv' )
|
||||
( echo $(( jv += \$iv )) )
|
||||
( let 'rv = 7 + (43 * 6' )
|
||||
|
||||
#ash# # more errors
|
||||
#ash# declare -i i
|
||||
#ash# i=0#4
|
||||
#ash# i=2#110#11
|
||||
|
||||
((echo abc; echo def;); echo ghi)
|
||||
|
||||
#ash# if (((4+4) + (4 + 7))); then
|
||||
#ash# echo ok
|
||||
#ash# fi
|
||||
|
||||
#ash# (()) # make sure the null expression works OK
|
||||
|
||||
#ash# a=(0 2 4 6)
|
||||
#ash# echo 6 $(( a[1] + a[2] ))
|
||||
#ash# echo 1 $(( (a[1] + a[2]) == a[3] ))
|
||||
#ash# (( (a[1] + a[2]) == a[3] )) ; echo 0 $?
|
||||
|
||||
# test pushing and popping the expression stack
|
||||
unset A
|
||||
A="4 + "
|
||||
( echo A $(( ( 4 + A ) + 4 )) )
|
||||
A="3 + 5"
|
||||
echo 16 $(( ( 4 + A ) + 4 ))
|
||||
|
||||
# badly-formed conditional expressions
|
||||
( echo $(( 4 ? : $A )) )
|
||||
( echo $(( 1 ? 20 )) )
|
||||
( echo $(( 4 ? 20 : )) )
|
||||
|
||||
# precedence and short-circuit evaluation
|
||||
B=9
|
||||
echo 9 $B
|
||||
|
||||
# error
|
||||
( echo $(( 0 && B=42 )); echo 9 $B )
|
||||
|
||||
# error
|
||||
( echo $(( 1 || B=88 )); echo 9 $B )
|
||||
|
||||
# ash mistakenly evaluates B=... below
|
||||
#ash# echo 0 $(( 0 && (B=42) ))
|
||||
echo 9 $B
|
||||
#ash# echo 0 $(( (${$} - $$) && (B=42) ))
|
||||
echo 9 $B
|
||||
#ash# echo 1 $(( 1 || (B=88) ))
|
||||
echo 9 $B
|
||||
|
||||
|
||||
# until command with (( )) command
|
||||
x=7
|
||||
|
||||
echo 7 $x
|
||||
#ash# until (( x == 4 ))
|
||||
until test "$x" = 4
|
||||
do
|
||||
echo $x
|
||||
x=4
|
||||
done
|
||||
|
||||
echo 4 $x
|
||||
|
||||
# exponentiation
|
||||
echo 32767 $(( 2**15 - 1))
|
||||
echo 32768 $(( 2**(16-1)))
|
||||
echo 131072 $(( 2**16*2 ))
|
||||
echo 2147483647 $(( 2**31-1))
|
||||
echo 1 $(( 2**0 ))
|
||||
|
||||
# {pre,post}-{inc,dec}rement and associated errors
|
||||
|
||||
x=4
|
||||
|
||||
echo 4 $x
|
||||
echo 4 $(( x++ ))
|
||||
echo 5 $x
|
||||
echo 5 $(( x-- ))
|
||||
echo 4 $x
|
||||
|
||||
echo 3 $(( --x ))
|
||||
echo 3 $x
|
||||
|
||||
echo 4 $(( ++x ))
|
||||
echo 4 $x
|
||||
|
||||
# bash 3.2 apparently thinks that ++7 is 7
|
||||
#ash# echo 7 $(( ++7 ))
|
||||
( echo $(( 7-- )) )
|
||||
|
||||
( echo $(( --x=7 )) )
|
||||
( echo $(( ++x=7 )) )
|
||||
|
||||
( echo $(( x++=7 )) )
|
||||
( echo $(( x--=7 )) )
|
||||
|
||||
echo 4 $x
|
||||
|
||||
echo 7 $(( +7 ))
|
||||
echo -7 $(( -7 ))
|
||||
|
||||
# bash 3.2 apparently thinks that ++7 is 7
|
||||
#ash# echo $(( ++7 ))
|
||||
#ash# echo $(( --7 ))
|
||||
|
||||
${THIS_SH} ./arith1.sub
|
||||
${THIS_SH} ./arith2.sub
|
||||
|
||||
x=4
|
||||
y=7
|
||||
|
||||
#ash# (( x=8 , y=12 ))
|
||||
x=8
|
||||
y=12
|
||||
echo $x $y
|
||||
|
||||
#ash# # should be an error
|
||||
#ash# (( x=9 y=41 ))
|
||||
|
||||
# These are errors
|
||||
unset b
|
||||
( echo $((a b)) )
|
||||
#ash# ((a b))
|
||||
|
||||
n=42
|
||||
printf "%d\n" $n
|
||||
printf "%i\n" $n
|
||||
#ash# echo $(( 8#$(printf "%o\n" $n) ))
|
||||
printf "%u\n" $n
|
||||
#ash# echo $(( 16#$(printf "%x\n" $n) ))
|
||||
#ash# echo $(( 16#$(printf "%X\n" $n) ))
|
||||
|
||||
# causes longjmp botches through bash-2.05b
|
||||
a[b[c]d]=e
|
||||
40
shell/hush_test/hush-arith/arith1.sub
Executable file
40
shell/hush_test/hush-arith/arith1.sub
Executable file
@@ -0,0 +1,40 @@
|
||||
# test of redone post-increment and post-decrement code
|
||||
( echo $(( 4-- )) )
|
||||
( echo $(( 4++ )) )
|
||||
( echo $(( 4 -- )) )
|
||||
( echo $(( 4 ++ )) )
|
||||
|
||||
#ash# (( array[0]++ ))
|
||||
#ash# echo ${array}
|
||||
|
||||
#ash# (( array[0] ++ ))
|
||||
#ash# echo ${array}
|
||||
|
||||
#ash# (( a++ ))
|
||||
#ash# echo $a
|
||||
#ash# (( a ++ ))
|
||||
#ash# echo $a
|
||||
a=2
|
||||
|
||||
echo 6 $(( a ++ + 4 ))
|
||||
echo 3 $a
|
||||
|
||||
echo 7 $(( a+++4 ))
|
||||
echo 4 $a
|
||||
|
||||
echo 0 $(( a---4 ))
|
||||
echo 3 $a
|
||||
|
||||
echo 7 $(( a -- + 4 ))
|
||||
echo 2 $a
|
||||
|
||||
echo -2 $(( a -- - 4 ))
|
||||
echo 1 $a
|
||||
|
||||
#ash# (( ++ + 7 ))
|
||||
|
||||
#ash# (( ++ ))
|
||||
( echo $(( +++7 )) )
|
||||
# bash 3.2 apparently thinks that ++ +7 is 7
|
||||
#ash# echo $(( ++ + 7 ))
|
||||
#ash# (( -- ))
|
||||
57
shell/hush_test/hush-arith/arith2.sub
Executable file
57
shell/hush_test/hush-arith/arith2.sub
Executable file
@@ -0,0 +1,57 @@
|
||||
# bash 3.2 apparently thinks that ++7 is 7 etc
|
||||
( echo $(( --7 )) )
|
||||
( echo $(( ++7 )) )
|
||||
( echo $(( -- 7 )) )
|
||||
( echo $(( ++ 7 )) )
|
||||
|
||||
#ash# ((++array[0] ))
|
||||
#ash# echo 1 $array
|
||||
#ash# (( ++ array[0] ))
|
||||
#ash# echo 2 $array
|
||||
|
||||
#ash# (( ++a ))
|
||||
#ash# echo 1 $a
|
||||
#ash# (( ++ a ))
|
||||
#ash# echo 2 $a
|
||||
|
||||
#ash# (( --a ))
|
||||
#ash# echo 1 $a
|
||||
#ash# (( -- a ))
|
||||
#ash# echo 0 $a
|
||||
a=0
|
||||
|
||||
echo 5 $(( 4 + ++a ))
|
||||
echo 1 $a
|
||||
|
||||
# ash doesn't handle it right...
|
||||
#ash# echo 6 $(( 4+++a ))
|
||||
#ash# echo 2 $a
|
||||
a=2
|
||||
|
||||
# ash doesn't handle it right...
|
||||
#ash# echo 3 $(( 4---a ))
|
||||
#ash# echo 1 $a
|
||||
a=1
|
||||
|
||||
echo 4 $(( 4 - -- a ))
|
||||
echo 0 $a
|
||||
|
||||
#ash# (( -- ))
|
||||
# bash 3.2 apparently thinks that ---7 is -7
|
||||
#ash# echo $(( ---7 ))
|
||||
( echo $(( -- - 7 )) )
|
||||
|
||||
#ash# (( ++ ))
|
||||
# bash 3.2: 7
|
||||
#ash# echo 7 $(( ++7 ))
|
||||
( echo $(( ++ + 7 )) )
|
||||
|
||||
# bash 3.2: -7
|
||||
#ash# echo -7 $(( ++-7 ))
|
||||
# bash 3.2: -7
|
||||
#ash# echo -7 $(( ++ - 7 ))
|
||||
|
||||
# bash 3.2: 7
|
||||
#ash# echo 7 $(( +--7 ))
|
||||
# bash 3.2: 7
|
||||
#ash# echo 7 $(( -- + 7 ))
|
||||
Reference in New Issue
Block a user