* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+#define _GNU_SOURCE /* for asprintf */
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <readline/readline.h>
#include <readline/history.h>
-#include <ecoli_tk_str.h>
-#include <ecoli_tk_seq.h>
-#include <ecoli_tk_space.h>
-#include <ecoli_tk_or.h>
+#include <ecoli_node.h>
+#include <ecoli_parsed.h>
+#include <ecoli_completed.h>
+#include <ecoli_keyval.h>
+#include <ecoli_node_str.h>
+#include <ecoli_node_seq.h>
+#include <ecoli_node_space.h>
+#include <ecoli_node_or.h>
+#include <ecoli_node_sh_lex.h>
+#include <ecoli_node_int.h>
+#include <ecoli_node_option.h>
+#include <ecoli_node_cmd.h>
+#include <ecoli_node_many.h>
+#include <ecoli_node_once.h>
+#include <ecoli_node_file.h>
-static struct ec_tk *commands;
+static struct ec_node *commands;
-/* Set to a character describing the type of completion being attempted by
- rl_complete_internal; available for use by application completion
- functions. */
-extern int rl_completion_type;
-/* Set to the last key used to invoke one of the completion functions */
-extern int rl_completion_invoking_key;
-
-int my_complete(int x, int y)
+static char *my_completion_entry(const char *s, int state)
{
- (void)x;
- (void)y;
-
- return 0;
-}
-
-char *my_completion_entry(const char *s, int state)
-{
- static struct ec_completed_tk *c;
- static const struct ec_completed_tk_elt *elt;
+ static struct ec_completed *c;
+ static struct ec_completed_iter *iter;
+ const struct ec_completed_item *item;
(void)s;
+ /* don't append a quote */
+ rl_completion_suppress_quote = 1;
+ rl_basic_quote_characters = "";
+
if (state == 0) {
- char *start;
+ char *line;
- if (c != NULL)
- ec_completed_tk_free(c);
+ ec_completed_free(c);
+
+ line = strdup(rl_line_buffer);
+ if (line == NULL)
+ return NULL;
+ line[rl_point] = '\0';
- start = strdup(rl_line_buffer);
- if (start == NULL)
+ c = ec_node_complete(commands, line);
+ free(line);
+ if (c == NULL)
return NULL;
- start[rl_point] = '\0';
- c = ec_tk_complete(commands, start);
- ec_completed_tk_iter_start(c);
+ ec_completed_iter_free(iter);
+ iter = ec_completed_iter(c, EC_MATCH | EC_PARTIAL_MATCH);
+ if (iter == NULL)
+ return NULL;
}
- elt = ec_completed_tk_iter_next(c);
- if (elt == NULL)
+ item = ec_completed_iter_next(iter);
+ if (item == NULL)
return NULL;
- return strdup(elt->full);
+ if (c->count_match == 1) {
+
+ /* don't add the trailing space for partial completions */
+ if (state == 0) {
+ if (item->type == EC_MATCH)
+ rl_completion_suppress_append = 0;
+ else
+ rl_completion_suppress_append = 1;
+ }
+
+ return strdup(item->str);
+ } else if (rl_completion_type == '?') {
+ /* on second try only show the display part */
+ return strdup(item->display);
+ }
+
+ return strdup(item->str);
}
-char **my_attempted_completion(const char *text, int start, int end)
+static char **my_attempted_completion(const char *text, int start, int end)
{
(void)start;
(void)end;
- // XXX when it returns NULL, it completes with a file
+
+ /* remove default file completion */
+ rl_attempted_completion_over = 1;
+
return rl_completion_matches(text, my_completion_entry);
}
-int main(void)
+/* this function builds the help string */
+static char *get_node_help(const struct ec_completed_node *compnode)
{
- struct ec_parsed_tk *p;
-// const char *name;
+ const struct ec_completed_item *item;
+ const struct ec_node *node;
+ char *help = NULL;
+ const char *node_help = NULL;
+ const char *node_desc = NULL;
+ size_t i;
+
+ /* Since we display only one help per node, only look at the first item
+ * to get the path. The objective is to retrieve the most precise
+ * help for this node. */
+ item = TAILQ_FIRST(&compnode->items);
+ for (i = 0; i < item->pathlen; i++) {
+ node = item->path[i];
+ if (node_help == NULL)
+ node_help = ec_keyval_get(ec_node_attrs(node), "help");
+ if (node_desc == NULL)
+ node_desc = ec_node_desc(node);
+ }
+
+ if (node_help == NULL)
+ node_help = "";
+ if (node_desc == NULL)
+ return NULL;
+
+ if (asprintf(&help, "%-20s %s", node_desc, node_help) < 0)
+ return NULL;
+
+ return help;
+}
+
+static int show_help(int ignore, int invoking_key)
+{
+ const struct ec_completed_node *compnode;
+ struct ec_completed *c;
+ struct ec_parsed *p;
char *line;
+ unsigned int count, i;
+ char **helps = NULL;
+ int match = 0;
+
+ (void)ignore;
+ (void)invoking_key;
+
+ line = strdup(rl_line_buffer);
+ if (line == NULL)
+ return 1;
+
+ /* check if the current line matches */
+ p = ec_node_parse(commands, line);
+ if (ec_parsed_matches(p))
+ match = 1;
+ ec_parsed_free(p);
+
+ /* complete at current cursor position */
+ line[rl_point] = '\0';
+ c = ec_node_complete(commands, line);
+ //ec_completed_dump(stdout, c);
+ free(line);
+ if (c == NULL)
+ return 1;
+
+ /* let's display one contextual help per node */
+ count = 0;
+ TAILQ_FOREACH(compnode, &c->nodes, next) {
+ if (TAILQ_EMPTY(&compnode->items))
+ continue;
+ count++;
+ }
- commands = ec_tk_seq_new_list(NULL,
- ec_tk_str_new(NULL, "hello"),
- ec_tk_space_new(NULL),
- ec_tk_or_new_list("name",
- ec_tk_str_new(NULL, "john"),
- ec_tk_str_new(NULL, "mike"),
- EC_TK_ENDLIST),
- EC_TK_ENDLIST);
- if (commands == NULL) {
- printf("cannot create token\n");
+ helps = calloc(count + match + 1, sizeof(char *));
+ if (helps == NULL)
return 1;
+
+ if (match)
+ helps[1] = "<return>";
+
+ /* strangely, rl_display_match_list() expects first index at 1 */
+ i = match + 1;
+ TAILQ_FOREACH(compnode, &c->nodes, next) {
+ if (TAILQ_EMPTY(&compnode->items))
+ continue;
+ helps[i++] = get_node_help(compnode);
}
- //rl_bind_key('\t', my_complete);
+ ec_completed_free(c);
+
+ rl_display_match_list(helps, count + match, 1000); /* XXX 1000 */
+
+ rl_forced_update_display();
+
+ return 0;
+
+ // free helps[n] XXX on error ?
+}
+
+static int create_commands(void)
+{
+ struct ec_node *cmdlist = NULL, *cmd = NULL;
+
+ cmdlist = ec_node("or", NULL);
+ if (cmdlist == NULL)
+ goto fail;
+
+
+ cmd = EC_NODE_SEQ(NULL,
+ ec_node_str(NULL, "hello"),
+ EC_NODE_OR("name",
+ ec_node_str("john", "john"),
+ ec_node_str(NULL, "johnny"),
+ ec_node_str(NULL, "mike")
+ ),
+ ec_node_option(NULL, ec_node_int("int", 0, 10, 10))
+ );
+ if (cmd == NULL)
+ goto fail;
+ ec_keyval_set(ec_node_attrs(cmd), "help",
+ "say hello to someone several times", NULL);
+ ec_keyval_set(ec_node_attrs(ec_node_find(cmd, "john")),
+ "help", "specific help for john", NULL);
+ ec_keyval_set(ec_node_attrs(ec_node_find(cmd, "name")),
+ "help", "the name of the person", NULL);
+ ec_keyval_set(ec_node_attrs(ec_node_find(cmd, "int")),
+ "help", "an integer (0-10)", NULL);
+ if (ec_node_or_add(cmdlist, cmd) < 0)
+ goto fail;
+
+
+ cmd = EC_NODE_CMD(NULL, "good morning name [count]",
+ EC_NODE_CMD("name", "bob|bobby|michael"),
+ ec_node_int("count", 0, 10, 10));
+ if (cmd == NULL)
+ goto fail;
+ ec_keyval_set(ec_node_attrs(cmd), "help",
+ "say good morning to someone several times", NULL);
+ ec_keyval_set(ec_node_attrs(ec_node_find(cmd, "name")), "help",
+ "the person to greet", NULL);
+ ec_keyval_set(ec_node_attrs(ec_node_find(cmd, "count")), "help",
+ "how many times to greet", NULL);
+ if (ec_node_or_add(cmdlist, cmd) < 0)
+ goto fail;
+
+
+ cmd = EC_NODE_CMD(NULL,
+ "buy potatoes,carrots,pumpkins");
+ if (cmd == NULL)
+ goto fail;
+ ec_keyval_set(ec_node_attrs(cmd), "help",
+ "buy some vegetables", NULL);
+ if (ec_node_or_add(cmdlist, cmd) < 0)
+ goto fail;
+
- //rl_completion_entry_function = my_completion_entry;
+ cmd = EC_NODE_CMD(NULL, "eat vegetables",
+ ec_node_many("vegetables",
+ EC_NODE_OR(NULL,
+ ec_node_str(NULL, "potatoes"),
+ ec_node_once(NULL,
+ ec_node_str(NULL, "carrots")),
+ ec_node_once(NULL,
+ ec_node_str(NULL, "pumpkins"))),
+ 1, 0));
+ if (cmd == NULL)
+ goto fail;
+ ec_keyval_set(ec_node_attrs(cmd), "help",
+ "eat vegetables (take some more potatoes)", NULL);
+ if (ec_node_or_add(cmdlist, cmd) < 0)
+ goto fail;
+
+
+ cmd = EC_NODE_SEQ(NULL,
+ ec_node_str(NULL, "bye")
+ );
+ ec_keyval_set(ec_node_attrs(cmd), "help", "say bye", NULL);
+ if (ec_node_or_add(cmdlist, cmd) < 0)
+ goto fail;
+
+
+ cmd = EC_NODE_SEQ(NULL,
+ ec_node_str(NULL, "load"),
+ ec_node("file", NULL)
+ );
+ ec_keyval_set(ec_node_attrs(cmd), "help", "load a file", NULL);
+ if (ec_node_or_add(cmdlist, cmd) < 0)
+ goto fail;
+
+
+ commands = ec_node_sh_lex(NULL, cmdlist);
+ if (commands == NULL)
+ goto fail;
+
+ return 0;
+
+ fail:
+ fprintf(stderr, "cannot initialize nodes\n");
+ ec_node_free(cmdlist);
+ return -1;
+}
+
+int main(void)
+{
+ struct ec_parsed *p;
+ char *line;
+
+ if (create_commands() < 0)
+ return 1;
+
+ rl_bind_key('?', show_help);
rl_attempted_completion_function = my_attempted_completion;
while (1) {
if (line == NULL)
break;
- // XXX need a "parse_all"
- p = ec_tk_parse(commands, line);
- ec_parsed_tk_dump(stdout, p);
+ p = ec_node_parse(commands, line);
+ ec_parsed_dump(stdout, p);
add_history(line);
- ec_parsed_tk_free(p);
+ ec_parsed_free(p);
}
- ec_tk_free(commands);
+ ec_node_free(commands);
return 0;
+
}
git.droids-corp.org / protos / libecoli.git / blobdiff