mirror of
https://github.com/radareorg/radare2.git
synced 2024-12-11 15:04:23 +00:00
710 lines
16 KiB
C
710 lines
16 KiB
C
/* radare - LGPL - Copyright 2009-2016 - pancake */
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#include <r_cmd.h>
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#include <r_util.h>
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#include <stdio.h>
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#include <r_cons.h>
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#include <r_cmd.h>
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#include <r_util.h>
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static int value = 0;
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#define NCMDS (sizeof (cmd->cmds)/sizeof(*cmd->cmds))
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R_LIB_VERSION (r_cmd);
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R_API void r_cmd_alias_init(RCmd *cmd) {
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cmd->aliases.count = 0;
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cmd->aliases.keys = NULL;
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cmd->aliases.values = NULL;
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}
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R_API RCmd *r_cmd_new () {
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int i;
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RCmd *cmd = R_NEW0 (RCmd);
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if (!cmd) {
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return cmd;
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}
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cmd->lcmds = r_list_new ();
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for (i = 0; i < NCMDS; i++) {
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cmd->cmds[i] = NULL;
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}
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cmd->nullcallback = cmd->data = NULL;
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r_core_plugin_init (cmd);
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r_cmd_macro_init (&cmd->macro);
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r_cmd_alias_init (cmd);
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return cmd;
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}
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R_API RCmd *r_cmd_free(RCmd *cmd) {
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int i;
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if (!cmd) return NULL;
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r_cmd_alias_free (cmd);
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r_cmd_macro_free (&cmd->macro);
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// dinitialize plugin commands
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r_core_plugin_deinit(cmd);
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r_list_free (cmd->plist);
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r_list_free (cmd->lcmds);
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for (i=0;i<NCMDS;i++)
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if (cmd->cmds[i])
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R_FREE (cmd->cmds[i]);
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free (cmd);
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return NULL;
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}
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R_API char **r_cmd_alias_keys(RCmd *cmd, int *sz) {
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if (sz) *sz = cmd->aliases.count;
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return cmd->aliases.keys;
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}
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R_API void r_cmd_alias_free (RCmd *cmd) {
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int i; // find
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for (i=0; i<cmd->aliases.count; i++) {
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free (cmd->aliases.keys[i]);
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free (cmd->aliases.values[i]);
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}
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cmd->aliases.count = 0;
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free (cmd->aliases.keys);
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free (cmd->aliases.values);
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free (cmd->aliases.remote);
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cmd->aliases.keys = NULL;
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cmd->aliases.values = NULL;
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}
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R_API int r_cmd_alias_del (RCmd *cmd, const char *k) {
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int i; // find
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for (i=0; i<cmd->aliases.count; i++) {
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if (!k || !strcmp (k, cmd->aliases.keys[i])) {
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free (cmd->aliases.values[i]);
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cmd->aliases.values[i] = NULL;
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cmd->aliases.count--;
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if (cmd->aliases.count>0) {
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if (i>0) {
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free (cmd->aliases.keys[i]);
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cmd->aliases.keys[i] = cmd->aliases.keys[0];
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free (cmd->aliases.values[i]);
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cmd->aliases.values[i] = cmd->aliases.values[0];
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}
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memmove (cmd->aliases.values,
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cmd->aliases.values+1,
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cmd->aliases.count*sizeof (void*));
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memmove (cmd->aliases.keys,
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cmd->aliases.keys+1,
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cmd->aliases.count*sizeof (void*));
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}
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return 1;
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}
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}
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return 0;
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}
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R_API int r_cmd_alias_set (RCmd *cmd, const char *k, const char *v, int remote) {
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int i; // find
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for (i = 0; i < cmd->aliases.count; i++) {
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int matches = !strcmp (k, cmd->aliases.keys[i]);
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if (matches) {
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free (cmd->aliases.values[i]);
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cmd->aliases.values[i] = strdup (v);
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return 1;
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}
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}
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// new
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i = cmd->aliases.count++;
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char **K = (char **)realloc (cmd->aliases.keys,
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sizeof (char *) * cmd->aliases.count);
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if (!K) {
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return 0;
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}
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cmd->aliases.keys = K;
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int *R = (int *)realloc (cmd->aliases.remote,
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sizeof (int) * cmd->aliases.count);
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if (!R) {
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return 0;
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}
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cmd->aliases.remote = R;
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char **V = (char **)realloc (cmd->aliases.values,
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sizeof (char *) * cmd->aliases.count);
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if (!V) {
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return 0;
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}
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cmd->aliases.values = V;
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cmd->aliases.keys[i] = strdup (k);
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cmd->aliases.values[i] = strdup (v);
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cmd->aliases.remote[i] = remote;
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return 0;
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}
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R_API char *r_cmd_alias_get (RCmd *cmd, const char *k, int remote) {
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int matches, i;
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for (i=0; i<cmd->aliases.count; i++) {
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matches = 0;
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if (remote) {
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if (cmd->aliases.remote[i]) {
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matches = !strncmp (k, cmd->aliases.keys[i],
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strlen (cmd->aliases.keys[i]));
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}
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} else {
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matches = !strcmp (k, cmd->aliases.keys[i]);
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}
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if (matches) {
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return cmd->aliases.values[i];
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}
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}
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return NULL;
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}
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R_API int r_cmd_set_data(RCmd *cmd, void *data) {
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cmd->data = data;
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return 1;
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}
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R_API int r_cmd_add_long(RCmd *cmd, const char *lcmd, const char *scmd, const char *desc) {
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RCmdLongItem *item = R_NEW (RCmdLongItem);
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if (!item) {
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return false;
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}
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strncpy (item->cmd, lcmd, sizeof (item->cmd)-1);
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strncpy (item->cmd_short, scmd, sizeof (item->cmd_short)-1);
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item->cmd_len = strlen (lcmd);
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strncpy (item->desc, desc, sizeof (item->desc)-1);
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if (!r_list_append (cmd->lcmds, item)){
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free (item);
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return false;
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}
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return true;
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}
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R_API int r_cmd_add(RCmd *c, const char *cmd, const char *desc, r_cmd_callback(cb)) {
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struct r_cmd_item_t *item;
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int idx = (ut8)cmd[0];
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item = c->cmds[idx];
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if (!item) {
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item = R_NEW (RCmdItem);
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c->cmds[idx] = item;
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}
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strncpy (item->cmd, cmd, sizeof (item->cmd)-1);
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strncpy (item->desc, desc, sizeof (item->desc)-1);
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item->callback = cb;
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return true;
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}
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R_API int r_cmd_del(RCmd *cmd, const char *command) {
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int idx = (ut8)command[0];
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free (cmd->cmds[idx]);
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cmd->cmds[idx] = NULL;
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return 0;
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}
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R_API int r_cmd_call(RCmd *cmd, const char *input) {
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struct r_cmd_item_t *c;
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int ret = -1;
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RListIter *iter;
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RCorePlugin *cp;
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if (!input || !*input) {
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if (cmd->nullcallback != NULL)
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ret = cmd->nullcallback (cmd->data);
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} else {
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char *nstr = NULL;
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const char *ji = r_cmd_alias_get (cmd, input, 1);
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if (ji) {
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nstr = r_str_newf ("=!%s", input);
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input = nstr;
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}
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r_list_foreach (cmd->plist, iter, cp) {
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if (cp->call (cmd->data, input)) {
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free (nstr);
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return true;
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}
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}
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if (input[0] == -1) {
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free (nstr);
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return -1;
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}
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c = cmd->cmds[((ut8)input[0]) & 0xff];
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if (c && c->callback) {
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const char *inp = (*input)? input+1: "";
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ret = c->callback (cmd->data, inp);
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} else ret = -1;
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free (nstr);
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}
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return ret;
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}
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R_API int r_cmd_call_long(RCmd *cmd, const char *input) {
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char *inp;
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RListIter *iter;
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RCmdLongItem *c;
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int ret, inplen = strlen (input)+1;
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r_list_foreach (cmd->lcmds, iter, c) {
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if (inplen >= c->cmd_len && !r_str_cmp (input, c->cmd, c->cmd_len)) {
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int lcmd = strlen (c->cmd_short);
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int linp = strlen (input+c->cmd_len);
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/// SLOW malloc on most situations. use stack
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inp = malloc (lcmd+linp+2); // TODO: use static buffer with R_CMD_MAXLEN
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if (!inp) {
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return -1;
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}
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memcpy (inp, c->cmd_short, lcmd);
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memcpy (inp + lcmd, input + c->cmd_len, linp + 1);
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ret = r_cmd_call (cmd, inp);
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free (inp);
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return ret;
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}
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}
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return -1;
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}
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/** macro.c **/
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R_API void r_cmd_macro_init(RCmdMacro *mac) {
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mac->counter = 0;
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mac->_brk_value = 0;
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mac->brk_value = &mac->_brk_value;
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mac->cb_printf = (void*)printf;
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mac->num = NULL;
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mac->user = NULL;
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mac->cmd = NULL;
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mac->macros = r_list_new ();
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}
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R_API void r_cmd_macro_free(RCmdMacro *mac) {
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r_list_free (mac->macros);
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mac->macros = NULL;
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}
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// XXX add support single line function definitions
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// XXX add support for single name multiple nargs macros
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R_API int r_cmd_macro_add(RCmdMacro *mac, const char *oname) {
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struct r_cmd_macro_item_t *macro;
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char *name, *args = NULL;
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//char buf[R_CMD_MAXLEN];
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RCmdMacroItem *m;
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int macro_update;
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RListIter *iter;
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char *pbody;
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// char *bufp;
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char *ptr;
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int lidx;
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if (!*oname) {
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r_cmd_macro_list (mac);
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return 0;
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}
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name = strdup (oname);
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if (!name) {
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perror ("strdup");
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return 0;
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}
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pbody = strchr (name, ',');
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if (!pbody) {
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eprintf ("Invalid macro body\n");
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free (name);
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return false;
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}
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*pbody = '\0';
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pbody++;
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if (*name && name[1] && name[strlen (name)-1]==')') {
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eprintf ("r_cmd_macro_add: missing macro body?\n");
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free (name);
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return -1;
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}
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macro = NULL;
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ptr = strchr (name, ' ');
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if (ptr) {
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*ptr='\0';
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args = ptr +1;
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}
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macro_update = 0;
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r_list_foreach (mac->macros, iter, m) {
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if (!strcmp (name, m->name)) {
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macro = m;
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// free (macro->name);
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free (macro->code);
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free (macro->args);
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macro_update = 1;
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break;
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}
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}
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if (ptr) {
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*ptr = ' ';
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}
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if (!macro) {
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macro = (struct r_cmd_macro_item_t *)malloc (
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sizeof (struct r_cmd_macro_item_t));
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macro->name = strdup (name);
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}
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macro->codelen = (pbody[0])? strlen (pbody)+2 : 4096;
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macro->code = (char *)malloc (macro->codelen);
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*macro->code = '\0';
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macro->nargs = 0;
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if (!args)
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args = "";
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macro->args = strdup (args);
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ptr = strchr (macro->name, ' ');
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if (ptr != NULL) {
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*ptr = '\0';
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macro->nargs = r_str_word_set0 (ptr+1);
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}
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#if 0
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if (pbody) {
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#endif
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for (lidx=0; pbody[lidx]; lidx++) {
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if (pbody[lidx]==',')
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pbody[lidx]='\n';
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else
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if (pbody[lidx]==')' && pbody[lidx-1]=='\n')
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pbody[lidx]='\0';
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}
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strncpy (macro->code, pbody, macro->codelen);
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macro->code[macro->codelen-1] = 0;
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//strcat (macro->code, ",");
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#if 0
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} else {
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int lbufp, codelen = 0, nl = 0;
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eprintf ("Reading macro from stdin:\n");
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for (;codelen<R_CMD_MAXLEN;) { // XXX input from mac->fd
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#if 0
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if (stdin == r_cons_stdin_fd) {
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mac->cb_printf(".. ");
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fflush(stdout);
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}
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fgets(buf, 1023, r_cons_stdin_fd);
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#endif
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fgets (buf, sizeof (buf)-1, stdin);
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if (*buf=='\n' && nl)
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break;
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nl = (*buf == '\n')?1:0;
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if (*buf==')')
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break;
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for (bufp=buf;*bufp==' '||*bufp=='\t';bufp++);
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lidx = strlen (buf)-2;
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lbufp = strlen (bufp);
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if (buf[lidx]==')' && buf[lidx-1]!='(') {
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buf[lidx]='\0';
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memcpy (macro->code+codelen, bufp, lbufp+1);
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break;
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}
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if (*buf != '\n') {
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memcpy (macro->code+codelen, bufp, lbufp+1);
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codelen += lbufp;
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}
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}
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}
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#endif
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if (macro_update == 0)
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r_list_append (mac->macros, macro);
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free (name);
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return 0;
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}
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R_API int r_cmd_macro_rm(RCmdMacro *mac, const char *_name) {
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RListIter *iter;
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RCmdMacroItem *m;
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char *name = strdup (_name);
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if (!name) return false;
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char *ptr = strchr (name, ')');
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if (ptr) *ptr = '\0';
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r_list_foreach (mac->macros, iter, m) {
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if (!strcmp (m->name, name)) {
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r_list_delete (mac->macros, iter);
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eprintf ("Macro '%s' removed.\n", name);
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free (m->name);
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free (m->code);
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free (m);
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free (name);
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return true;
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}
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}
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free (name);
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return false;
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}
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// TODO: use mac->cb_printf which is r_cons_printf at the end
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R_API void r_cmd_macro_list(RCmdMacro *mac) {
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RCmdMacroItem *m;
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int j, idx = 0;
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RListIter *iter;
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r_list_foreach (mac->macros, iter, m) {
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mac->cb_printf ("%d (%s %s, ", idx, m->name, m->args);
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for (j=0; m->code[j]; j++) {
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if (m->code[j]=='\n')
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mac->cb_printf (", ");
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else mac->cb_printf ("%c", m->code[j]);
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}
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mac->cb_printf (")\n");
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idx++;
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}
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}
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// TODO: use mac->cb_printf which is r_cons_printf at the end
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R_API void r_cmd_macro_meta(RCmdMacro *mac) {
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RCmdMacroItem *m;
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int j;
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RListIter *iter;
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r_list_foreach (mac->macros, iter, m) {
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mac->cb_printf ("(%s %s, ", m->name, m->args);
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for (j=0; m->code[j]; j++) {
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if (m->code[j]=='\n')
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mac->cb_printf (", ");
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else mac->cb_printf ("%c", m->code[j]);
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}
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mac->cb_printf (")\n");
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}
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}
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#if 0
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(define name value
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f $0 @ $1)
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(define loop cmd
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loop:
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? $0 == 0
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?? .loop:
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)
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.(define patata 3)
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#endif
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R_API int r_cmd_macro_cmd_args(RCmdMacro *mac, const char *ptr, const char *args, int nargs) {
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int i, j;
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char *pcmd, cmd[R_CMD_MAXLEN];
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const char *arg = args;
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for (*cmd=i=j=0; j<R_CMD_MAXLEN && ptr[j]; i++,j++) {
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if (ptr[j]=='$') {
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if (ptr[j+1]>='0' && ptr[j+1]<='9') {
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int wordlen;
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int w = ptr[j+1]-'0';
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const char *word = r_str_word_get0 (arg, w);
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if (word && *word) {
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wordlen = strlen (word);
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if ((i+wordlen+1) >= sizeof (cmd))
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return -1;
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memcpy (cmd+i, word, wordlen+1);
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i += wordlen-1;
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j++;
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} else eprintf ("Undefined argument %d\n", w);
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} else
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if (ptr[j+1]=='@') {
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char off[32];
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int offlen;
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offlen = snprintf (off, sizeof (off), "%d",
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mac->counter);
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if ((i+offlen+1) >= sizeof (cmd))
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return -1;
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memcpy (cmd+i, off, offlen+1);
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i += offlen-1;
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j++;
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} else {
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cmd[i] = ptr[j];
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cmd[i+1] = '\0';
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}
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} else {
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cmd[i] = ptr[j];
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cmd[i+1] = '\0';
|
|
}
|
|
}
|
|
for (pcmd = cmd; *pcmd && (*pcmd==' ' || *pcmd == '\t'); pcmd++);
|
|
//eprintf ("-pre %d\n", (int)mac->num->value);
|
|
int xx = (*pcmd==')')? 0: mac->cmd (mac->user, pcmd);
|
|
//eprintf ("-pos %p %d\n", mac->num, (int)mac->num->value);
|
|
return xx;
|
|
}
|
|
|
|
R_API char *r_cmd_macro_label_process(RCmdMacro *mac, RCmdMacroLabel *labels, int *labels_n, char *ptr) {
|
|
int i;
|
|
for (; *ptr==' '; ptr++);
|
|
if (ptr[strlen (ptr)-1]==':' && !strchr (ptr, ' ')) {
|
|
/* label detected */
|
|
if (ptr[0]=='.') {
|
|
// eprintf("---> GOTO '%s'\n", ptr+1);
|
|
/* goto */
|
|
for (i=0;i<*labels_n;i++) {
|
|
// eprintf("---| chk '%s'\n", labels[i].name);
|
|
if (!strcmp (ptr+1, labels[i].name)) {
|
|
return labels[i].ptr;
|
|
}
|
|
}
|
|
return NULL;
|
|
} else
|
|
/* conditional goto */
|
|
if (ptr[0]=='?' && ptr[1]=='!' && ptr[2] != '?') {
|
|
if (mac->num && mac->num->value != 0) {
|
|
char *label = ptr + 3;
|
|
for (; *label==' '||*label=='.'; label++);
|
|
// eprintf("===> GOTO %s\n", label);
|
|
/* goto label ptr+3 */
|
|
for (i=0;i<*labels_n;i++) {
|
|
if (!strcmp (label, labels[i].name))
|
|
return labels[i].ptr;
|
|
}
|
|
return NULL;
|
|
}
|
|
} else
|
|
/* conditional goto */
|
|
if (ptr[0]=='?' && ptr[1]=='?' && ptr[2] != '?') {
|
|
if (mac->num->value == 0) {
|
|
char *label = ptr + 3;
|
|
for (;label[0]==' '||label[0]=='.'; label++);
|
|
// eprintf("===> GOTO %s\n", label);
|
|
/* goto label ptr+3 */
|
|
for (i=0; i<*labels_n; i++) {
|
|
if (!strcmp (label, labels[i].name))
|
|
return labels[i].ptr;
|
|
}
|
|
return NULL;
|
|
}
|
|
} else {
|
|
for (i=0; i<*labels_n; i++) {
|
|
// eprintf("---| chk '%s'\n", labels[i].name);
|
|
if (!strcmp (ptr+1, labels[i].name)) {
|
|
i = 0;
|
|
break;
|
|
}
|
|
}
|
|
/* Add label */
|
|
// eprintf("===> ADD LABEL(%s)\n", ptr);
|
|
if (i == 0) {
|
|
strncpy (labels[*labels_n].name, ptr, 64);
|
|
labels[*labels_n].ptr = ptr+strlen (ptr)+1;
|
|
*labels_n = *labels_n + 1;
|
|
}
|
|
}
|
|
return ptr + strlen (ptr)+1;
|
|
}
|
|
return ptr;
|
|
}
|
|
|
|
/* TODO: add support for spaced arguments */
|
|
R_API int r_cmd_macro_call(RCmdMacro *mac, const char *name) {
|
|
char *args;
|
|
int nargs = 0;
|
|
char *str, *ptr, *ptr2;
|
|
RListIter *iter;
|
|
static int macro_level = 0;
|
|
RCmdMacroItem *m;
|
|
/* labels */
|
|
int labels_n = 0;
|
|
struct r_cmd_macro_label_t labels[MACRO_LABELS];
|
|
|
|
str = strdup (name);
|
|
if (!str) {
|
|
perror ("strdup");
|
|
return false;
|
|
}
|
|
ptr = strchr (str, ')');
|
|
if (!ptr) {
|
|
eprintf ("Missing end ')' parenthesis.\n");
|
|
free (str);
|
|
return false;
|
|
} else *ptr='\0';
|
|
|
|
args = strchr (str, ' ');
|
|
if (args) {
|
|
*args = '\0';
|
|
args++;
|
|
nargs = r_str_word_set0 (args);
|
|
}
|
|
|
|
macro_level++;
|
|
if (macro_level > MACRO_LIMIT) {
|
|
eprintf ("Maximum macro recursivity reached.\n");
|
|
macro_level--;
|
|
free (str);
|
|
return 0;
|
|
}
|
|
ptr = strchr (str, ',');
|
|
if (ptr) *ptr =0;
|
|
|
|
r_cons_break_push (NULL, NULL);
|
|
r_list_foreach (mac->macros, iter, m) {
|
|
if (!strcmp (str, m->name)) {
|
|
char *ptr = m->code;
|
|
char *end = strchr (ptr, '\n');
|
|
if (m->nargs != 0 && nargs != m->nargs) {
|
|
eprintf ("Macro '%s' expects %d args, not %d\n", m->name, m->nargs, nargs);
|
|
macro_level --;
|
|
free (str);
|
|
r_cons_break_pop ();
|
|
return false;
|
|
}
|
|
mac->brk = 0;
|
|
do {
|
|
if (end) *end = '\0';
|
|
if (r_cons_is_breaked ()) {
|
|
eprintf ("Interrupted at (%s)\n", ptr);
|
|
if (end) {
|
|
*end = '\n';
|
|
}
|
|
free (str);
|
|
r_cons_break_pop ();
|
|
return false;
|
|
}
|
|
r_cons_flush ();
|
|
/* Label handling */
|
|
ptr2 = r_cmd_macro_label_process (mac, &(labels[0]), &labels_n, ptr);
|
|
if (!ptr2) {
|
|
eprintf ("Oops. invalid label name\n");
|
|
break;
|
|
} else if (ptr != ptr2) {
|
|
ptr = ptr2;
|
|
if (end) *end ='\n';
|
|
end = strchr (ptr, '\n');
|
|
continue;
|
|
}
|
|
/* Command execution */
|
|
if (*ptr) {
|
|
mac->num->value = value;
|
|
int r = r_cmd_macro_cmd_args (mac, ptr, args, nargs);
|
|
// TODO: handle quit? r == 0??
|
|
// quit, exits the macro. like a break
|
|
value = mac->num->value;
|
|
if (r < 0) {
|
|
free (str);
|
|
r_cons_break_pop ();
|
|
return r;
|
|
}
|
|
}
|
|
if (end) {
|
|
*end = '\n';
|
|
ptr = end + 1;
|
|
} else {
|
|
macro_level --;
|
|
free (str);
|
|
goto out_clean;
|
|
}
|
|
|
|
/* Fetch next command */
|
|
end = strchr (ptr, '\n');
|
|
} while (!mac->brk);
|
|
if (mac->brk) {
|
|
macro_level--;
|
|
free (str);
|
|
goto out_clean;
|
|
}
|
|
}
|
|
}
|
|
eprintf ("No macro named '%s'\n", str);
|
|
macro_level--;
|
|
free (str);
|
|
out_clean:
|
|
r_cons_break_pop ();
|
|
return true;
|
|
}
|
|
|
|
R_API int r_cmd_macro_break(RCmdMacro *mac, const char *value) {
|
|
mac->brk = 1;
|
|
mac->brk_value = NULL;
|
|
mac->_brk_value = (ut64)r_num_math (mac->num, value);
|
|
if (value && *value)
|
|
mac->brk_value = &mac->_brk_value;
|
|
return 0;
|
|
}
|