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-rw-r--r--libbb/lineedit.c67
1 files changed, 45 insertions, 22 deletions
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index d6c33541e..5dd835cca 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -584,6 +584,12 @@ static void input_forward(void)
#if ENABLE_FEATURE_TAB_COMPLETION
+//FIXME:
+//needs to be more clever: currently it thinks that "foo\ b<TAB>
+//matches the file named "foo bar", which is untrue.
+//Also, perhaps "foo b<TAB> needs to complete to "foo bar" <cursor>,
+//not "foo bar <cursor>...
+
static void free_tab_completion_data(void)
{
if (matches) {
@@ -601,7 +607,7 @@ static void add_match(char *matched)
num_matches++;
}
-#if ENABLE_FEATURE_USERNAME_COMPLETION
+# if ENABLE_FEATURE_USERNAME_COMPLETION
/* Replace "~user/..." with "/homedir/...".
* The parameter is malloced, free it or return it
* unchanged if no user is matched.
@@ -657,7 +663,7 @@ static NOINLINE unsigned complete_username(const char *ud)
return 1 + userlen;
}
-#endif /* FEATURE_USERNAME_COMPLETION */
+# endif /* FEATURE_USERNAME_COMPLETION */
enum {
FIND_EXE_ONLY = 0,
@@ -734,10 +740,10 @@ static NOINLINE unsigned complete_cmd_dir_file(const char *command, int type)
pfind++;
/* dirbuf = ".../.../.../" */
dirbuf = xstrndup(command, pfind - command);
-#if ENABLE_FEATURE_USERNAME_COMPLETION
+# if ENABLE_FEATURE_USERNAME_COMPLETION
if (dirbuf[0] == '~') /* ~/... or ~user/... */
dirbuf = username_path_completion(dirbuf);
-#endif
+# endif
path1[0] = dirbuf;
}
pf_len = strlen(pfind);
@@ -1015,13 +1021,18 @@ static void showfiles(void)
}
}
-static char *add_quote_for_spec_chars(char *found)
+static const char *is_special_char(char c)
+{
+ return strchr(" `\"#$%^&*()=+{}[]:;'|\\<>", c);
+}
+
+static char *quote_special_chars(char *found)
{
int l = 0;
char *s = xzalloc((strlen(found) + 1) * 2);
while (*found) {
- if (strchr(" `\"#$%^&*()=+{}[]:;'|\\<>", *found))
+ if (is_special_char(*found))
s[l++] = '\\';
s[l++] = *found++;
}
@@ -1038,10 +1049,10 @@ static NOINLINE void input_tab(smallint *lastWasTab)
/* Length of string used for matching */
unsigned match_pfx_len = match_pfx_len;
int find_type;
-#if ENABLE_UNICODE_SUPPORT
+# if ENABLE_UNICODE_SUPPORT
/* cursor pos in command converted to multibyte form */
int cursor_mb;
-#endif
+# endif
if (!(state->flags & TAB_COMPLETION))
return;
@@ -1068,9 +1079,9 @@ static NOINLINE void input_tab(smallint *lastWasTab)
* (we then also (ab)use this extra space later - see (**))
*/
match_buf = xmalloc(MAX_LINELEN * sizeof(int16_t));
-#if !ENABLE_UNICODE_SUPPORT
+# if !ENABLE_UNICODE_SUPPORT
save_string(match_buf, cursor + 1); /* +1 for NUL */
-#else
+# else
{
CHAR_T wc = command_ps[cursor];
command_ps[cursor] = BB_NUL;
@@ -1078,26 +1089,37 @@ static NOINLINE void input_tab(smallint *lastWasTab)
command_ps[cursor] = wc;
cursor_mb = strlen(match_buf);
}
-#endif
+# endif
find_type = build_match_prefix(match_buf);
/* Free up any memory already allocated */
free_tab_completion_data();
-#if ENABLE_FEATURE_USERNAME_COMPLETION
- /* If the word starts with `~' and there is no slash in the word,
+# if ENABLE_FEATURE_USERNAME_COMPLETION
+ /* If the word starts with ~ and there is no slash in the word,
* then try completing this word as a username. */
if (state->flags & USERNAME_COMPLETION)
if (match_buf[0] == '~' && strchr(match_buf, '/') == NULL)
match_pfx_len = complete_username(match_buf);
-#endif
- /* Try to match a command in $PATH, or a directory, or a file */
+# endif
+ /* If complete_username() did not match,
+ * try to match a command in $PATH, or a directory, or a file */
if (!matches)
match_pfx_len = complete_cmd_dir_file(match_buf, find_type);
+
+ /* Account for backslashes which will be inserted
+ * by quote_special_chars() later */
+ {
+ const char *e = match_buf + strlen(match_buf);
+ const char *s = e - match_pfx_len;
+ while (s < e)
+ if (is_special_char(*s++))
+ match_pfx_len++;
+ }
+
/* Remove duplicates */
if (matches) {
- unsigned i;
- unsigned n = 0;
+ unsigned i, n = 0;
qsort_string_vector(matches, num_matches);
for (i = 0; i < num_matches - 1; ++i) {
//if (matches[i] && matches[i+1]) { /* paranoia */
@@ -1112,6 +1134,7 @@ static NOINLINE void input_tab(smallint *lastWasTab)
matches[n++] = matches[i];
num_matches = n;
}
+
/* Did we find exactly one match? */
if (num_matches != 1) { /* no */
char *cp;
@@ -1133,7 +1156,7 @@ static NOINLINE void input_tab(smallint *lastWasTab)
goto ret; /* no */
}
*cp = '\0';
- cp = add_quote_for_spec_chars(chosen_match);
+ cp = quote_special_chars(chosen_match);
free(chosen_match);
chosen_match = cp;
len_found = strlen(chosen_match);
@@ -1141,7 +1164,7 @@ static NOINLINE void input_tab(smallint *lastWasTab)
/* Next <tab> is not a double-tab */
*lastWasTab = 0;
- chosen_match = add_quote_for_spec_chars(matches[0]);
+ chosen_match = quote_special_chars(matches[0]);
len_found = strlen(chosen_match);
if (chosen_match[len_found-1] != '/') {
chosen_match[len_found] = ' ';
@@ -1149,7 +1172,7 @@ static NOINLINE void input_tab(smallint *lastWasTab)
}
}
-#if !ENABLE_UNICODE_SUPPORT
+# if !ENABLE_UNICODE_SUPPORT
/* Have space to place the match? */
/* The result consists of three parts with these lengths: */
/* cursor + (len_found - match_pfx_len) + (command_len - cursor) */
@@ -1166,7 +1189,7 @@ static NOINLINE void input_tab(smallint *lastWasTab)
/* write out the matched command */
redraw(cmdedit_y, command_len - pos);
}
-#else
+# else
{
/* Use 2nd half of match_buf as scratch space - see (**) */
char *command = match_buf + MAX_LINELEN;
@@ -1190,7 +1213,7 @@ static NOINLINE void input_tab(smallint *lastWasTab)
redraw(cmdedit_y, pos >= 0 ? pos : 0);
}
}
-#endif
+# endif
ret:
free(chosen_match);
free(match_buf);