demo: Update example to use tl_mode_push/_pop.

demo/commands.c

@@ -16,19 +16,8 @@
  */
 
 #include "tokenline.h"
+#include "commands.h"
 
-enum {
- T_SHOW = 1,
- T_SET,
- T_HARDWARE,
- T_VERSION,
- T_DEVICE,
- T_DIRECTORY,
- T_HELP,
- T_CPU,
- T_MEMORY,
- T_FREQUENCY,
-};
 t_token_dict dict[] = {
  { /* Dummy entry */ },
  { T_SHOW, "show" },
@@ -41,14 +30,31 @@ t_token_dict dict[] = {
  { T_CPU, "cpu" },
  { T_MEMORY, "memory" },
  { T_FREQUENCY, "frequency" },
+ { T_MKDIR, "mkdir" },
+ { T_LS, "ls" },
+ { T_EXIT, "exit" },
+ { }
+};
+
+t_token tokens_mode_device[] = {
+ { T_SHOW,
+ .help = "Show device information" },
+ { T_MKDIR,
+ .help = "Create directory" },
+ { T_LS,
+ .help = "List files and directories" },
+ { T_EXIT,
+ .help = "Exit device mode" },
  { }
 };
+
 t_token tokens_set[] = {
  { T_FREQUENCY,
  .arg_type = T_ARG_FREQ,
  .help = "Frequency" },
  { }
 };
+
 t_token tokens_hardware[] = {
  { T_CPU,
  .help = "CPU" },
@@ -77,6 +83,8 @@ t_token tokens[] = {
  { T_SET,
  .subtokens = tokens_set,
  .help = "Set things" },
+ { T_DEVICE,
+ .help = "Device mode" },
  { T_HELP,
  .arg_type = T_ARG_HELP,
  .help = "Available commands" },

demo/commands.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2014 Bert Vermeulen <[email protected]>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http:https://www.gnu.org/licenses/>.
+ */
+
+enum {
+ T_SHOW = 1,
+ T_SET,
+ T_HARDWARE,
+ T_VERSION,
+ T_DEVICE,
+ T_DIRECTORY,
+ T_HELP,
+ T_CPU,
+ T_MEMORY,
+ T_FREQUENCY,
+ T_MKDIR,
+ T_LS,
+ T_EXIT,
+};
+

demo/demo.c

@@ -19,11 +19,23 @@
 #include <string.h>
 #include <unistd.h>
 #include <termios.h>
+#include "commands.h"
 
 #include "tokenline.h"
 
 extern t_token tokens[];
 extern t_token_dict dict[];
+extern t_token tokens_mode_device[];
+
+enum {
+ MODE_TOP,
+ MODE_DEVICE,
+};
+
+struct demo_context {
+ t_tokenline *tl;
+ int mode;
+} ctx = { };
 
 void print(void *user, const char *str)
 {
@@ -34,11 +46,11 @@ void print(void *user, const char *str)
 
 static void dump_parsed(void *user, t_tokenline_parsed *p)
 {
+ struct demo_context *ctx;
  float arg_float;
  int arg_int, i;
 
- (void)user;
-
+ ctx = user;
  for (i = 0; p->tokens[i]; i++) {
  printf("%d: ", i);
  switch (p->tokens[i]) {
@@ -62,6 +74,20 @@ static void dump_parsed(void *user, t_tokenline_parsed *p)
  dict[p->tokens[i]].tokenstr);
  }
  }
+
+ switch (p->tokens[0]) {
+ case T_DEVICE:
+ ctx->mode = MODE_DEVICE;
+ tl_set_prompt(ctx->tl, "device> ");
+ tl_mode_push(ctx->tl, tokens_mode_device);
+ break;
+ case T_EXIT:
+ ctx->mode = MODE_TOP;
+ tl_set_prompt(ctx->tl, "> ");
+ tl_mode_pop(ctx->tl);
+ break;
+ }
+
 }
 
 int main(int argc, char **argv)
@@ -79,7 +105,8 @@ int main(int argc, char **argv)
  new_termios.c_cc[VMIN] = 1;
  new_termios.c_cc[VTIME] = 0;
  tcsetattr(0, TCSAFLUSH, &new_termios);
- tl_init(&tl, tokens, dict, print, NULL);
+ ctx.tl = &tl;
+ tl_init(&tl, tokens, dict, print, &ctx);
  tl_set_prompt(&tl, "> ");
  tl_set_callback(&tl, dump_parsed);
  while (TRUE) {