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authorRob Landley <rob@landley.net>2020-07-22 01:10:01 -0500
committerRob Landley <rob@landley.net>2020-07-22 01:10:01 -0500
commitcf98e3c310528084d393a50dfa2e1ed1d49999ab (patch)
tree72730ec552a3a8b93e1ad1d4a25d58028d9af86e /toys/pending
parentde303e914bc3836e74a798deb211bf9b1ee8c325 (diff)
downloadtoybox-cf98e3c310528084d393a50dfa2e1ed1d49999ab.tar.gz
toysh: Start of wildcard plumbing.
Diffstat (limited to 'toys/pending')
-rw-r--r--toys/pending/sh.c43
1 files changed, 27 insertions, 16 deletions
diff --git a/toys/pending/sh.c b/toys/pending/sh.c
index d7615356..a6a8ba99 100644
--- a/toys/pending/sh.c
+++ b/toys/pending/sh.c
@@ -22,6 +22,7 @@
*
* deviations from posix: don't care about $LANG or $LC_ALL
+ * TODO: case wildcard
* TODO: test that $PS1 color changes work without stupid \[ \] hack
* TODO: Handle embedded NUL bytes in the command line? (When/how?)
@@ -593,7 +594,11 @@ static char *parse_word(char *start, int early)
toybuf[quote++] = ")}]"[i];
end++;
}
+ } else if (end[1]=='(' && strchr("?*+@!", *end)) {
+ toybuf[quote++] = ')';
+ end += 2;
}
+
if (early && !quote) return end;
end++;
}
@@ -831,6 +836,13 @@ char *slashcopy(char *s, char c)
return ss;
}
+// wildcard expand data and add results to arg list
+static void wildcard_add(struct sh_arg *arg, char *data)
+{
+ arg_add(arg, data);
+}
+
+
#define NO_PATH (1<<0) // path expansion (wildcards)
#define NO_SPLIT (1<<1) // word splitting
#define NO_BRACE (1<<2) // {brace,expansion}
@@ -838,18 +850,14 @@ char *slashcopy(char *s, char c)
#define NO_QUOTE (1<<4) // quote removal
#define SEMI_IFS (1<<5) // Use ' ' instead of IFS to combine $*
// TODO: parameter/variable $(command) $((math)) split pathglob
-// TODO: ${name:?error} causes an error/abort here (syntax_err longjmp?)
-// TODO: $1 $@ $* need args marshalled down here: function+structure?
-// arg = append to this
-// str = string to expand
-// flags = type of expansions (not) to do
-// delete = append new allocations to this so they can be freed later
-// TODO: at_args: $1 $2 $3 $* $@
+// expand str appending to arg using above flag defines, add mallocs to delete
static int expand_arg_nobrace(struct sh_arg *arg, char *str, unsigned flags,
struct arg_list **delete)
{
char cc, qq = 0, sep[6], *old = str, *new = str, *s, *ss, *ifs, *slice;
int ii = 0, oo = 0, xx, yy, dd, jj, kk, ll, mm;
+ void (*cardish_add)(struct sh_arg *arg, char *data) =
+ (flags&NO_PATH) ? arg_add : wildcard_add;
if (BUGBUG) dprintf(255, "expand %s\n", str);
@@ -878,8 +886,7 @@ if (BUGBUG) dprintf(255, "expand %s\n", str);
}
}
- // parameter/variable expansion, and dequoting
-
+ // parameter/variable expansion and dequoting
for (; (cc = str[ii++]); old!=new && (new[oo] = 0)) {
struct sh_arg aa = {0};
@@ -1158,7 +1165,7 @@ barf:
// when no prefix, not splitting, no suffix: use existing memory
if (!oo && !*ss && !((mm==aa.c) ? str[ii] : (flags&NO_SPLIT))) {
- if (qq || ss!=ifs) arg_add(arg, ifs);
+ if (qq || ss!=ifs) cardish_add(arg, ifs);
continue;
}
@@ -1173,9 +1180,12 @@ barf:
// finished arg: keep if quoted, non-blank, or non-whitespace separator
else {
- if (qq || *new || *ss) arg_add(arg, xrealloc(new, strlen(new)+1));
+ if (qq || *new || *ss) {
+ push_arg(delete, new = xrealloc(new, strlen(new)+1));
+ cardish_add(arg, new);
+ new = xstrdup(str+ii);
+ }
qq &= 1;
- new = xstrdup(str+ii);
oo = 0;
}
@@ -1196,9 +1206,10 @@ barf:
// TODO test NO_SPLIT cares about IFS, see also trailing \n
// Record result.
- if (*new || qq)
- arg_add_del(arg, new, (old != new) ? delete : 0);
- else if(old != new) free(new);
+ if (*new || qq) {
+ if (old != new) push_arg(delete, new);
+ cardish_add(arg, new);
+ } else if (old != new) free(new);
return 0;
}
@@ -2607,7 +2618,7 @@ static void subshell_setup(void)
fcntl(254, F_SETFD, FD_CLOEXEC);
fp = fdopen(254, "r");
- // This is not efficient, could array_add the local vars.
+// TODO This is not efficient, could array_add the local vars.
// TODO implicit exec when possible
while ((s = xgetline(fp, 0))) toys.exitval = sh_run(s);
fclose(fp);