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authorTavian Barnes <tavianator@tavianator.com>2016-09-06 21:26:32 -0400
committerTavian Barnes <tavianator@tavianator.com>2016-09-06 21:26:32 -0400
commit03ab4da2ac19a6cb7653da9a250319f4dff963e9 (patch)
tree194569824d8826bc241e50fd0e75f59a13d56490 /parse.c
parentac16d6a9faaa4cdc38608dec6a855835a2580ebb (diff)
downloadbfs-03ab4da2ac19a6cb7653da9a250319f4dff963e9.tar.xz
Give suggestions for operators too.
Diffstat (limited to 'parse.c')
-rw-r--r--parse.c66
1 files changed, 47 insertions, 19 deletions
diff --git a/parse.c b/parse.c
index 15e0213..6d55317 100644
--- a/parse.c
+++ b/parse.c
@@ -1398,7 +1398,9 @@ static const struct table_entry parse_table[] = {
{"P", false, parse_follow, 0, false},
{"H", false, parse_follow, BFTW_FOLLOW_ROOT, false},
{"L", false, parse_follow, BFTW_FOLLOW | BFTW_DETECT_CYCLES, false},
+ {"a"},
{"amin", false, parse_acmtime, ATIME, MINUTES},
+ {"and"},
{"atime", false, parse_acmtime, ATIME, DAYS},
{"anewer", false, parse_acnewer, ATIME},
{"cmin", false, parse_acmtime, CTIME, MINUTES},
@@ -1440,9 +1442,12 @@ static const struct table_entry parse_table[] = {
{"nocolor", false, parse_color, false},
{"nohidden", false, parse_nohidden},
{"noleaf", false, parse_noleaf},
+ {"not"},
{"nowarn", false, parse_warn, false},
+ {"o"},
{"ok", false, parse_exec, EXEC_CONFIRM},
{"okdir", false, parse_exec, EXEC_CONFIRM | EXEC_CHDIR},
+ {"or"},
{"path", false, parse_path, false},
{"print", false, parse_print},
{"print0", false, parse_print0},
@@ -1467,23 +1472,8 @@ static const struct table_entry parse_table[] = {
{0},
};
-/**
- * LITERAL : OPTION
- * | TEST
- * | ACTION
- */
-static struct expr *parse_literal(struct parser_state *state) {
- struct cmdline *cmdline = state->cmdline;
-
- // Paths are already skipped at this point
- const char *arg = state->argv[0];
-
- if (*arg++ != '-') {
- pretty_error(cmdline->stderr_colors,
- "error: Expected a predicate; found '%s'.\n", arg);
- return NULL;
- }
-
+/** Look up an argument in the parse table. */
+static const struct table_entry *table_lookup(const char *arg) {
for (const struct table_entry *entry = parse_table; entry->arg; ++entry) {
bool match;
if (entry->prefix) {
@@ -1492,12 +1482,18 @@ static struct expr *parse_literal(struct parser_state *state) {
match = strcmp(arg, entry->arg) == 0;
}
if (match) {
- return entry->parse(state, entry->arg1, entry->arg2);
+ return entry;
}
}
+ return NULL;
+}
+
+/** Search for a fuzzy match in the parse table. */
+static const struct table_entry *table_lookup_fuzzy(const char *arg) {
const struct table_entry *best = NULL;
int best_dist;
+
for (const struct table_entry *entry = parse_table; entry->arg; ++entry) {
int dist = typo_distance(arg, entry->arg);
if (!best || dist < best_dist) {
@@ -1506,8 +1502,40 @@ static struct expr *parse_literal(struct parser_state *state) {
}
}
+ return best;
+}
+
+/**
+ * LITERAL : OPTION
+ * | TEST
+ * | ACTION
+ */
+static struct expr *parse_literal(struct parser_state *state) {
+ struct cmdline *cmdline = state->cmdline;
+
+ // Paths are already skipped at this point
+ const char *arg = state->argv[0];
+
+ if (arg[0] != '-') {
+ goto unexpected;
+ }
+
+ const struct table_entry *match = table_lookup(arg + 1);
+ if (match) {
+ if (!match->parse) {
+ goto unexpected;
+ }
+ return match->parse(state, match->arg1, match->arg2);
+ }
+
+ match = table_lookup_fuzzy(arg + 1);
+ pretty_error(cmdline->stderr_colors,
+ "error: Unknown argument '%s'; did you mean '-%s'?\n", arg, match->arg);
+ return NULL;
+
+unexpected:
pretty_error(cmdline->stderr_colors,
- "error: Unknown argument '-%s'; did you mean '-%s'?\n", arg, best->arg);
+ "error: Expected a predicate; found '%s'.\n", arg);
return NULL;
}