change command_find helper interface
[openocd.git] / src / helper / command.c
index 60a4a26ee92b25611b4cdb6dbbf2dd496f94c9cc..538c07bb917392981622af66327d30c6774fe649 100644 (file)
 #include "jim-eventloop.h"
 
 
-int fast_and_dangerous = 0;
 Jim_Interp *interp = NULL;
 
 static int run_command(struct command_context *context,
-               command_t *c, const char *words[], unsigned num_words);
+               struct command *c, const char *words[], unsigned num_words);
 
 static void tcl_output(void *privData, const char *file, unsigned line,
                const char *function, const char *string)
@@ -76,15 +75,45 @@ void script_debug(Jim_Interp *interp, const char *name,
        }
 }
 
+static void script_command_args_free(const char **words, unsigned nwords)
+{
+       for (unsigned i = 0; i < nwords; i++)
+               free((void *)words[i]);
+       free(words);
+}
+static const char **script_command_args_alloc(
+               unsigned argc, Jim_Obj *const *argv, unsigned *nwords)
+{
+       const char **words = malloc(argc * sizeof(char *));
+       if (NULL == words)
+               return NULL;
+
+       unsigned i;
+       for (i = 0; i < argc; i++)
+       {
+               int len;
+               const char *w = Jim_GetString(argv[i], &len);
+               /* a comment may end the line early */
+               if (*w == '#')
+                       break;
+
+               words[i] = strdup(w);
+               if (words[i] == NULL)
+               {
+                       script_command_args_free(words, i);
+                       return NULL;
+               }
+       }
+       *nwords = i;
+       return words;
+}
+
 static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
        /* the private data is stashed in the interp structure */
-       command_t *c;
+       struct command *c;
        struct command_context *context;
        int retval;
-       int i;
-       int nwords;
-       char **words;
 
        /* DANGER!!!! be careful what we invoke here, since interp->cmdPrivData might
         * get overwritten by running other Jim commands! Treat it as an
@@ -102,28 +131,10 @@ static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 
        script_debug(interp, c->name, argc, argv);
 
-       words = malloc(sizeof(char *) * (argc + 1));
-       words[0] = c->name;
-       for (i = 0; i < argc; i++)
-       {
-               int len;
-               const char *w = Jim_GetString(argv[i], &len);
-               if (*w=='#')
-               {
-                       /* hit an end of line comment */
-                       break;
-               }
-               words[i + 1] = strdup(w);
-               if (words[i + 1] == NULL)
-               {
-                       int j;
-                       for (j = 0; j < i; j++)
-                               free(words[j + 1]);
-                       free(words);
-                       return JIM_ERR;
-               }
-       }
-       nwords = i;
+       unsigned nwords;
+       const char **words = script_command_args_alloc(argc, argv, &nwords);
+       if (NULL == words)
+               return JIM_ERR;
 
        /* grab the command context from the associated data */
        context = Jim_GetAssocData(interp, "context");
@@ -142,8 +153,7 @@ static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 
        log_add_callback(tcl_output, tclOutput);
 
-       // turn words[0] into args[-1] with this cast
-       retval = run_command(context, c, (const char **)words + 1, nwords);
+       retval = run_command(context, c, (const char **)words, nwords);
 
        log_remove_callback(tcl_output, tclOutput);
 
@@ -151,9 +161,7 @@ static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
        Jim_SetResult(interp, tclOutput);
        Jim_DecrRefCount(interp, tclOutput);
 
-       for (i = 0; i < nwords; i++)
-               free(words[i + 1]);
-       free(words);
+       script_command_args_free(words, nwords);
 
        int *return_retval = Jim_GetAssocData(interp, "retval");
        if (return_retval != NULL)
@@ -164,7 +172,7 @@ static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
        return (retval == ERROR_OK)?JIM_OK:JIM_ERR;
 }
 
-static Jim_Obj *command_name_list(struct command_s *c)
+static Jim_Obj *command_name_list(struct command *c)
 {
        Jim_Obj *cmd_list = c->parent ?
                        command_name_list(c->parent) :
@@ -197,10 +205,9 @@ static void command_helptext_add(Jim_Obj *cmd_list, const char *help)
  * Find a command by name from a list of commands.
  * @returns The named command if found, or NULL.
  */
-static struct command_s *command_find(struct command_s **head, const char *name)
+static struct command *command_find(struct command *head, const char *name)
 {
-       assert(head);
-       for (struct command_s *cc = *head; cc; cc = cc->next)
+       for (struct command *cc = head; cc; cc = cc->next)
        {
                if (strcmp(cc->name, name) == 0)
                        return cc;
@@ -213,7 +220,7 @@ static struct command_s *command_find(struct command_s **head, const char *name)
  * @returns Returns false if the named command already exists in the list.
  * Returns true otherwise.
  */
-static void command_add_child(struct command_s **head, struct command_s *c)
+static void command_add_child(struct command **head, struct command *c)
 {
        assert(head);
        if (NULL == *head)
@@ -221,24 +228,24 @@ static void command_add_child(struct command_s **head, struct command_s *c)
                *head = c;
                return;
        }
-       struct command_s *cc = *head;
+       struct command *cc = *head;
        while (cc->next) cc = cc->next;
        cc->next = c;
 }
 
-command_t* register_command(struct command_context *context,
-               command_t *parent, char *name, command_handler_t handler,
+struct command* register_command(struct command_context *context,
+               struct command *parent, char *name, command_handler_t handler,
                enum command_mode mode, char *help)
 {
        if (!context || !name)
                return NULL;
 
-       struct command_s **head = parent ? &parent->children : &context->commands;
-       struct command_s *c = command_find(head, name);
+       struct command **head = parent ? &parent->children : &context->commands;
+       struct command *c = command_find(*head, name);
        if (NULL != c)
                return c;
 
-       c = malloc(sizeof(command_t));
+       c = malloc(sizeof(struct command));
 
        c->name = strdup(name);
        c->parent = parent;
@@ -276,7 +283,7 @@ command_t* register_command(struct command_context *context,
 
 int unregister_all_commands(struct command_context *context)
 {
-       command_t *c, *c2;
+       struct command *c, *c2;
 
        if (context == NULL)
                return ERROR_OK;
@@ -308,7 +315,7 @@ int unregister_all_commands(struct command_context *context)
 
 int unregister_command(struct command_context *context, char *name)
 {
-       command_t *c, *p = NULL, *c2;
+       struct command *c, *p = NULL, *c2;
 
        if ((!context) || (!name))
                return ERROR_INVALID_ARGUMENTS;
@@ -414,7 +421,7 @@ void command_print(struct command_context *context, const char *format, ...)
        va_end(ap);
 }
 
-static char *__command_name(struct command_s *c, char delim, unsigned extra)
+static char *__command_name(struct command *c, char delim, unsigned extra)
 {
        char *name;
        unsigned len = strlen(c->name);
@@ -431,15 +438,14 @@ static char *__command_name(struct command_s *c, char delim, unsigned extra)
        }
        return name;
 }
-char *command_name(struct command_s *c, char delim)
+char *command_name(struct command *c, char delim)
 {
        return __command_name(c, delim, 0);
 }
 
 static int run_command(struct command_context *context,
-               command_t *c, const char *words[], unsigned num_words)
+               struct command *c, const char *words[], unsigned num_words)
 {
-       int start_word = 0;
        if (!((context->mode == COMMAND_CONFIG) || (c->mode == COMMAND_ANY) || (c->mode == context->mode)))
        {
                /* Config commands can not run after the config stage */
@@ -447,9 +453,13 @@ static int run_command(struct command_context *context,
                return ERROR_FAIL;
        }
 
-       unsigned argc = num_words - start_word - 1;
-       const char **args = words + start_word + 1;
-       int retval = c->handler(context, args, argc);
+       struct command_invocation cmd = {
+                       .ctx = context,
+                       .name = c->name,
+                       .argc = num_words - 1,
+                       .argv = words + 1,
+               };
+       int retval = c->handler(&cmd);
        if (retval == ERROR_COMMAND_SYNTAX_ERROR)
        {
                /* Print help for command */
@@ -723,18 +733,18 @@ static int jim_capture(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 COMMAND_HANDLER(handle_sleep_command)
 {
        bool busy = false;
-       if (argc == 2)
+       if (CMD_ARGC == 2)
        {
-               if (strcmp(args[1], "busy") == 0)
+               if (strcmp(CMD_ARGV[1], "busy") == 0)
                        busy = true;
                else
                        return ERROR_COMMAND_SYNTAX_ERROR;
        }
-       else if (argc < 1 || argc > 2)
+       else if (CMD_ARGC < 1 || CMD_ARGC > 2)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        unsigned long duration = 0;
-       int retval = parse_ulong(args[0], &duration);
+       int retval = parse_ulong(CMD_ARGV[0], &duration);
        if (ERROR_OK != retval)
                return retval;
 
@@ -753,21 +763,9 @@ COMMAND_HANDLER(handle_sleep_command)
        return ERROR_OK;
 }
 
-COMMAND_HANDLER(handle_fast_command)
-{
-       if (argc != 1)
-               return ERROR_COMMAND_SYNTAX_ERROR;
-
-       fast_and_dangerous = strcmp("enable", args[0]) == 0;
-
-       return ERROR_OK;
-}
-
-
-struct command_context* command_init()
+struct command_context* command_init(const char *startup_tcl)
 {
        struct command_context* context = malloc(sizeof(struct command_context));
-       extern const char startup_tcl[];
        const char *HostOs;
 
        context->mode = COMMAND_EXEC;
@@ -838,10 +836,6 @@ struct command_context* command_init()
                        handle_sleep_command, COMMAND_ANY,
                        "<n> [busy] - sleep for n milliseconds. "
                        "\"busy\" means busy wait");
-       register_command(context, NULL, "fast",
-                       handle_fast_command, COMMAND_ANY,
-                       "fast <enable/disable> - place at beginning of "
-                       "config files. Sets defaults to fast and dangerous.");
 
        return context;
 }
@@ -869,7 +863,8 @@ void process_jim_events(void)
 #endif
 }
 
-void register_jim(struct command_context *cmd_ctx, const char *name, int (*cmd)(Jim_Interp *interp, int argc, Jim_Obj *const *argv), const char *help)
+void register_jim(struct command_context *cmd_ctx, const char *name,
+               Jim_CmdProc cmd, const char *help)
 {
        Jim_CreateCommand(interp, name, cmd, NULL, NULL);
 
@@ -880,18 +875,6 @@ void register_jim(struct command_context *cmd_ctx, const char *name, int (*cmd)(
        command_helptext_add(cmd_list, help);
 }
 
-/* return global variable long value or 0 upon failure */
-long jim_global_long(const char *variable)
-{
-       Jim_Obj *objPtr = Jim_GetGlobalVariableStr(interp, variable, JIM_ERRMSG);
-       long t;
-       if (Jim_GetLong(interp, objPtr, &t) == JIM_OK)
-       {
-               return t;
-       }
-       return 0;
-}
-
 #define DEFINE_PARSE_NUM_TYPE(name, type, func, min, max) \
        int parse##name(const char *str, type *ul) \
        { \
@@ -952,3 +935,53 @@ DEFINE_PARSE_LONG(_int, int, n < INT_MIN, INT_MAX)
 DEFINE_PARSE_LONG(_s32, int32_t, n < INT32_MIN, INT32_MAX)
 DEFINE_PARSE_LONG(_s16, int16_t, n < INT16_MIN, INT16_MAX)
 DEFINE_PARSE_LONG(_s8, int8_t, n < INT8_MIN, INT8_MAX)
+
+static int command_parse_bool(const char *in, bool *out,
+               const char *on, const char *off)
+{
+       if (strcasecmp(in, on) == 0)
+               *out = true;
+       else if (strcasecmp(in, off) == 0)
+               *out = false;
+       else
+               return ERROR_COMMAND_SYNTAX_ERROR;
+       return  ERROR_OK;
+}
+
+int command_parse_bool_arg(const char *in, bool *out)
+{
+       if (command_parse_bool(in, out, "on", "off") == ERROR_OK)
+               return ERROR_OK;
+       if (command_parse_bool(in, out, "enable", "disable") == ERROR_OK)
+               return ERROR_OK;
+       if (command_parse_bool(in, out, "true", "false") == ERROR_OK)
+               return ERROR_OK;
+       if (command_parse_bool(in, out, "yes", "no") == ERROR_OK)
+               return ERROR_OK;
+       if (command_parse_bool(in, out, "1", "0") == ERROR_OK)
+               return ERROR_OK;
+       return ERROR_INVALID_ARGUMENTS;
+}
+
+COMMAND_HELPER(handle_command_parse_bool, bool *out, const char *label)
+{
+       switch (CMD_ARGC) {
+       case 1: {
+               const char *in = CMD_ARGV[0];
+               if (command_parse_bool_arg(in, out) != ERROR_OK)
+               {
+                       LOG_ERROR("%s: argument '%s' is not valid", CMD_NAME, in);
+                       return ERROR_INVALID_ARGUMENTS;
+               }
+               // fall through
+       }
+       case 0:
+               LOG_INFO("%s is %s", label, *out ? "enabled" : "disabled");
+               break;
+       default:
+               return ERROR_INVALID_ARGUMENTS;
+       }
+       return ERROR_OK;
+}
+
+

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