From: Thadeu Lima de Souza Cascardo <cascardo@cascardo.eti.br>
Date: Sun, 11 Dec 2016 13:46:09 +0000 (-0200)
Subject: help: comando exibe ajuda curta dos comandos.
X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Fdeclara.git;a=commitdiff_plain;h=9deafbf270706a8c3710e45000d02119e38f4001

help: comando exibe ajuda curta dos comandos.

O comando "help" ou "ajuda" sem parâmetros mostram a lista de comandos
acompanhados de uma descrição curta.
---

diff --git a/lib/help.c b/lib/help.c
index 39a53e1..3a012b4 100644
--- a/lib/help.c
+++ b/lib/help.c
@@ -32,13 +32,27 @@
 
 static const char *helpdir = DOCDIR;
 
+static int help_cmds(struct declaracao *dec)
+{
+	void *iter = NULL;
+	struct cmd *cmd;
+	printf("\n");
+	while ((cmd = cmd_next(&iter)) != NULL) {
+		printf("%s - ", cmd->name);
+		if (cmd->help)
+			printf("%s", cmd->help);
+		printf("\n");
+	}
+	printf("\n");
+}
+
 static int run_help(struct declaracao *dec, char **args, int argc)
 {
 	int r;
 	char *filename;
 	char *basename;
 	if (argc == 1)
-		basename = "help";
+		return help_cmds(dec);
 	else if (argc == 2)
 		basename = args[1];
 	else