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-rw-r--r--cmd/cmd.c721
1 files changed, 721 insertions, 0 deletions
diff --git a/cmd/cmd.c b/cmd/cmd.c
new file mode 100644
index 0000000..f743a7f
--- /dev/null
+++ b/cmd/cmd.c
@@ -0,0 +1,721 @@
+#include "cmd.h"
+#include "cmd_parse.h"
+
+cmd_tok_t* cmd_tok_create( char *s, char *e, int sz, int type )
+{
+ cmd_tok_t *ret = NULL;
+
+ ret = malloc( sizeof(cmd_tok_t) );
+ if ( ret == NULL )
+ return ret;
+
+ memset( ret, 0, sizeof(cmd_tok_t) );
+
+ ret->s = s;
+ ret->e = e;
+ ret->sz = sz;
+ ret->type = type;
+ ret->next = NULL; //no need, but sec programming says we need it
+
+ return ret;
+}
+
+
+int cmd_tok_add( cmd_tok_t *tok, cmd_tok_t *next )
+{
+ int ret = 0;
+
+ if ( tok == NULL )
+ {
+ return -1;
+ }
+
+ if ( next == NULL )
+ {
+ return -1;
+ }
+
+ if ( tok->next != NULL )
+ {
+ printf("next token allready set\n");
+ return -1;
+ }
+
+ tok->next = next;
+
+ return ret;
+}
+
+
+int cmd_tok_print( cmd_tok_t *tok )
+{
+ int ret = 0;
+
+ printf("TOK %p\n",tok);
+ if (tok)
+ {
+ printf("S:%p E:%p SZ:%d \n", tok->s, tok->e, tok->sz);
+ printf("TYPE: ");
+ switch (tok->type)
+ {
+ case CMDT_NONE:
+ printf("NONE");
+ break;
+ case CMDT_INT:
+ printf("INT");
+ break;
+ case CMDT_HEX:
+ printf("HEX");
+ break;
+ case CMDT_BIN:
+ printf("BIN");
+ break;
+ case CMDT_STR:
+ printf("STR");
+ break;
+ case CMDT_WORD:
+ printf("WORD");
+ break;
+ case CMDT_SP:
+ printf("SP");
+ break;
+ case CMDT_FLOAT:
+ printf("FLOAT");
+ break;
+ default:
+ printf("UNKNOWN");
+ }
+ printf("\n");
+ printf("NEXT: %p\n", tok->next );
+ }
+
+ return ret;
+}
+
+
+void cmd_tok_destroy( cmd_tok_t *tok )
+{
+ cmd_tok_t *t=NULL, *n=NULL;
+
+ if (tok == NULL)
+ {
+ return;
+ }
+
+ if ( tok->next == NULL )
+ {
+ free( tok );
+ return;
+ }
+
+ t = tok;
+ n = t;
+ while ( n != NULL)
+ {
+ n = t->next;
+ t->next = NULL;
+ free(t);
+ t = n;
+ }
+}
+
+
+int cmd_tok_count( cmd_tok_t *tok )
+{
+ int ret = 0;
+ cmd_tok_t *iter = NULL;
+
+ if (tok == NULL)
+ return 0;
+
+ iter = tok;
+ while( iter != NULL )
+ {
+ ret += 1;
+ iter = iter->next;
+ }
+
+ return ret;
+}
+
+
+
+cmd_arg_t* cmd_arg_create( cmd_tok_t *tok )
+{
+ cmd_arg_t *ret = NULL;
+ int argc = -1;
+ cmd_tok_t *iter = NULL;
+ int i = 0;
+
+ ret = malloc( sizeof(cmd_arg_t) );
+ if ( ret == NULL )
+ {
+ return NULL;
+ }
+ memset( ret, 0, sizeof( cmd_arg_t ));
+
+ //get number of arguments in command line
+ argc = cmd_tok_count( tok );
+ ret->argc = argc;
+
+
+ //alloc mem for argument string values
+ ret->argv = malloc( sizeof(int*)*argc );
+ if ( ret->argv == NULL )
+ {
+ //printf("ERR:err_malloc_argv\n");
+ goto err_malloc_argv;
+ }
+ memset( ret->argv, 0, sizeof(int*)*argc );
+
+ //alloc mem for argument type values
+ ret->type = malloc( sizeof(int)*argc );
+ if ( ret->type == NULL )
+ {
+ //printf("ERR:err_malloc_type\n");
+ goto err_malloc_type;
+ }
+ memset( ret->type, 0, sizeof(int)*argc );
+
+ //create for each cmd token string and set type
+ iter = tok;
+ for (i=0; i<argc; i++,iter=iter->next)
+ {
+ ret->argv[i] = malloc( iter->sz+1 );
+ memcpy(ret->argv[i], iter->s, iter->sz );
+ ret->argv[i][iter->sz] = 0x0;
+ ret->type[i] = iter->type;
+ }
+
+ return ret;
+
+err_malloc_type:
+ free( ret->argv );
+err_malloc_argv:
+ free( ret );
+ return NULL;
+}
+
+
+cmd_arg_t* cmd_arg_sub( cmd_arg_t *arg )
+{
+ cmd_arg_t *ret = NULL;
+
+ int i=0;
+
+ if ( arg == NULL )
+ return NULL;
+
+ if ( arg->argc == 1 )
+ {
+ ret = cmd_arg_sub_empty();
+ return ret;
+ }
+
+ ret = malloc( sizeof(cmd_arg_t) );
+
+ ret->argc = arg->argc-1;
+
+ ret->type = malloc(sizeof(int)*(arg->argc-1));
+ memset(ret->type, 0, sizeof(int)*(arg->argc-1) );
+
+ ret->argv = malloc( sizeof(char*)*(arg->argc-1) );
+ memset(ret->argv, 0, sizeof(char*)*(arg->argc-1) );
+
+ ret->__sub_cmd = 1;
+
+ for (i=0; i<ret->argc; i++)
+ {
+ ret->argv[i] = arg->argv[i+1];
+ ret->type[i] = arg->type[i+1];
+ }
+
+ return ret;
+}
+
+
+cmd_arg_t* cmd_arg_sub_empty()
+{
+ cmd_arg_t *ret = NULL;
+
+ ret = malloc( sizeof(cmd_arg_t) );
+ ret->argc = 0;
+ ret->argv = NULL;
+ ret->type = NULL;
+ ret->__sub_cmd = 1;
+
+ return ret;
+}
+
+void cmd_arg_destroy( cmd_arg_t *arg )
+{
+ int i;
+
+ if ( arg == NULL )
+ return;
+
+ for ( i=0; i<arg->argc; i++)
+ {
+ if ( arg->__sub_cmd == 0 )
+ free( arg->argv[i] );
+ }
+
+ free( arg->argv );
+
+ free( arg->type );
+
+ free( arg );
+}
+
+int cmd_exec( cmd_table_t *tbl, cmd_arg_t *arg )
+{
+ int ret = -1;
+ int fret = 0;
+ int pret = 0; //pre condition return
+ int i;
+
+ cmd_arg_t *sub_arg = NULL;
+
+ //there could be 0 arguments
+ if ( arg->argc < 0 )
+ {
+ printf("Hm ... no arguments\n");
+ return -1;
+ }
+
+ if ( arg->argc == 0 )
+ return 0;
+
+ i = 0;
+ while ( (tbl[i].cmd != NULL) && (tbl[i].clb != NULL) )
+ {
+ //printf("tbl.cmd %s\n", tbl[i].cmd );
+ if ((strlen(tbl[i].cmd) == strlen(arg->argv[0])) //if there is 0 args then here could be non-0 and we get troubles
+ && (strlen(tbl[i].cmd) != 0)) //combo if
+ if ( strncmp( tbl[i].cmd, arg->argv[0], strlen(arg->argv[0]) ) == 0 )
+ {
+ //never will exec becouse of statment in while
+ if ( tbl[i].clb == NULL )
+ {
+ printf("Empty callback %s\n", tbl[i].cmd);
+ ret = -1;
+ break;
+ }
+
+ sub_arg = cmd_arg_sub( arg );
+ //execute callback preconditions
+ if (tbl[i].pre != NULL)
+ {
+ pret = tbl[i].pre( sub_arg );
+ } else {
+ pret = 0; //no precond just pass
+ }
+ if (pret == 0)
+ {
+ //execute callback
+ fret = tbl[i].clb( sub_arg );
+ }
+
+ //if command whent wrong or not still clean mem
+ if ( sub_arg != NULL )
+ {
+ cmd_arg_destroy( sub_arg );
+ }
+
+ //command execution precondtions met but wrong execution
+ if ( pret == 0 )
+ {
+ //command execution whent wrong lets go out
+ if ( fret != 0 )
+ {
+ printf("Command broken execution\n");
+ ret = -1;
+ break;
+ }
+ }
+ ret = 0; //succesfull execution
+ break;
+ }
+
+ i++;
+ }
+
+ return ret;
+}
+
+int cmd_exec_ev( cmd_table_t *tbl, cmd_arg_t *arg, int event )
+{
+ int ret = -1;
+ int fret = 0;
+ int i;
+
+ cmd_arg_t *sub_arg = NULL;
+
+ if ( arg->argc < 1 )
+ {
+ printf("Hm ... no arguments\n");
+ return -1;
+ }
+
+ i = 0;
+ while ( (tbl[i].cmd != NULL) && (tbl[i].clb != NULL) )
+ {
+ //printf("tbl.cmd %s\n", tbl[i].cmd );
+ if ((strlen(tbl[i].cmd) == strlen(arg->argv[0])) //if there is 0 args then here could be non-0 and we get troubles
+ && (strlen(tbl[i].cmd) != 0)) //combo if
+ if ( strncmp( tbl[i].cmd, arg->argv[0], strlen(arg->argv[0]) ) == 0 )
+ {
+ //never will exec becouse of statment in while
+ if ( tbl[i].clb == NULL )
+ {
+ printf("Empty callback %s\n", tbl[i].cmd);
+ ret = -1;
+ break;
+ }
+
+ sub_arg = cmd_arg_sub( arg );
+
+ if ( sub_arg == NULL )
+ sub_arg = cmd_arg_sub_empty();
+
+ fret = tbl[i].clb( sub_arg );
+
+ //if command whent wrong or not still clean mem
+ if ( sub_arg != NULL )
+ {
+ cmd_arg_destroy( sub_arg );
+ }
+
+ //command execution whent wrong lets go out
+ if ( fret != 0 )
+ {
+ printf("Command broken execution\n");
+ ret = -1;
+ break;
+ }
+ ret = 0;
+ break;
+ }
+
+ i++;
+ }
+
+
+ return ret;
+}
+
+/*
+For now support only first command autocomplete, and return first cmd
+RETURN: string to command, dont modify it
+*/
+char* cmd_ac( cmd_table_t *tbl, const char *s )
+{
+ char *ret = NULL;
+ int i = -1;
+ int idx = -1, match=-1;//best match
+ int ret_match;
+ int str_ac_sz = strlen(s);
+
+
+ i = 0;
+ while ( (tbl[i].cmd != NULL) && (tbl[i].clb != NULL) )
+ {
+ ret_match = strncmp_ac( s, tbl[i].cmd, str_ac_sz );
+ if (ret_match > 0)
+ {
+ if (ret_match == str_ac_sz+1)
+ {
+ idx = i;
+ break;
+ } else
+ {
+ if (ret_match > match)
+ {
+ idx = i;
+ match = ret_match;
+ }
+ }
+ }
+ i++;
+ }
+
+ if ( idx >= 0 )
+ {
+ ret = tbl[idx].cmd;
+ }
+
+ return ret;
+}
+
+struct cmd_acq_head_t* cmd_acq( cmd_table_t *tbl, const char *s )
+{
+ struct cmd_acq_head_t *ret = NULL;
+
+ int i = -1;
+ int ret_match;
+ int str_ac_sz = strlen(s);
+
+ struct cmd_acq_head_t *ac = malloc(sizeof(struct cmd_acq_t));
+
+ SLIST_INIT(ac);
+ i = 0;
+ while ( (tbl[i].cmd != NULL) && (tbl[i].clb != NULL) )
+ {
+ ret_match = strncmp_ac( s, tbl[i].cmd, str_ac_sz );
+ if (ret_match > 0)
+ {
+ //found 100% match
+ if (ret_match == str_ac_sz+1)
+ {
+ PRINT("Unknown state\n");
+ break;
+ //partial match
+ } else
+ {
+ struct cmd_acq_t *acq = malloc(sizeof(struct cmd_acq_t));
+ acq->suggestion = tbl[i].cmd;
+ SLIST_INSERT_HEAD(ac,acq,next_sugg);
+ }
+ }
+ i++;
+ }
+
+ ret = ac;
+
+ return ret;
+}
+
+void cmd_acq_free( struct cmd_acq_head_t *acq )
+{
+ struct cmd_acq_t *iter;
+ struct cmd_acq_t *prev;
+
+ prev = NULL;
+ iter = NULL;
+ SLIST_FOREACH(iter,acq,next_sugg)
+ {
+ if ( prev != NULL )
+ {
+ free( prev );
+ prev = NULL;
+ }
+ prev = iter;
+ }
+
+ return;
+}
+
+char* cmd_mng_history( cmd_mng_t *cmng, int index )
+{
+ int idx;
+ char *ret=NULL;
+
+ if (cmng == NULL)
+ {
+ return NULL;
+ }
+
+ if (cmng->history_size < CMD_HISTORY_SIZE)
+ {
+ if (index < cmng->history_size)
+ {
+ ret = cmng->history[index];
+ }
+ } else
+ {
+ idx = (cmng->history_size-CMD_HISTORY_SIZE+index)%CMD_HISTORY_SIZE;
+ ret = cmng->history[idx];
+ }
+
+ return ret;
+}
+
+char* cmd_mng_autocomplete( cmd_mng_t *cmng, char *cmd, size_t cmd_sz )
+{
+ char *ret=NULL;
+
+ cmd_arg_t *args;
+ cmd_tok_t tl, *ptr = &tl, *iter = NULL;
+ cmd_table_t *tab = cmng->table;
+ struct cmd_acq_t *iter_sugg = NULL;
+ int ac_sz=0,cnt_sz=0;
+ char *ac_str;
+ memset( &tl, 0, sizeof( cmd_tok_t ));
+
+ if ( parse_cmd(ptr, cmd, cmd_sz) == -1)
+ {
+ printf("Cmd problems\n");
+ return NULL;
+ }
+
+ iter = ptr->next;
+ args = cmd_arg_create( iter );
+
+ //if command not found offer auto complete options
+ if (args->argc > 0)
+ {
+ struct cmd_acq_head_t *ac = cmd_acq(tab,args->argv[0]);
+ if (ac != NULL)
+ {
+ //calculate string str
+ SLIST_FOREACH(iter_sugg,ac,next_sugg)
+ {
+ //printf("%s ", iter_sugg->suggestion);
+ ac_sz += strlen(iter_sugg->suggestion)+1; //1 for " "
+ }
+ ac_sz += 2; //"> "
+ ac_sz += 1; //"\0"
+
+ ac_str = (char *)malloc(ac_sz);
+
+ memcpy( ac_str, "> ", 2 );
+ cnt_sz = 2;
+ cnt_sz = 0;
+ SLIST_FOREACH(iter_sugg,ac,next_sugg)
+ {
+ //double logical usage
+ ac_sz = strlen(iter_sugg->suggestion);
+ memcpy( ac_str+cnt_sz, iter_sugg->suggestion, ac_sz);
+ cnt_sz += ac_sz;
+ ac_str[cnt_sz] = ' ';
+ cnt_sz += 1;
+ }
+ ac_str[cnt_sz] = '\0';
+ ret = ac_str;
+ }
+ cmd_acq_free( ac );
+ }
+
+ cmd_tok_destroy( ptr->next );
+ ptr->next = NULL;
+ cmd_arg_destroy( args );
+
+ return ret;
+}
+
+int cmd_mng_exec( cmd_mng_t *cmng, const char *cmd, size_t sz_cmd )
+{
+ int ret = CMD_EOK;
+ int fret = 0;
+ cmd_tok_t tl, *ptr_tl = &tl, *iter = NULL;
+ cmd_arg_t *args = NULL;
+
+ // Init values
+ memset( &tl, 0, sizeof( cmd_tok_t ));
+
+ fret = parse_cmd( ptr_tl, cmd, sz_cmd );
+ if ( fret != 0 )
+ {
+ ret = CMD_EEXE;
+ goto error_exe; //if err memleak from parse_cmd?
+ }
+
+ iter = ptr_tl->next;
+ args = cmd_arg_create( iter );
+ cmd_tok_destroy( ptr_tl->next );
+ ptr_tl->next = NULL;
+
+ if (cmd_exec(cmng->table, args) != 0)
+ {
+ ret = CMD_ECMD;
+ goto error_cmd;
+ }
+
+ /* if history is on then manage commands */
+ if (cmng->flag_history)
+ {
+ /*replace with proper datatype in future*/
+ char *p = malloc(sz_cmd);
+ int idx = (cmng->history_size)%CMD_HISTORY_SIZE;
+ memcpy(p,cmd,sz_cmd);
+ if (cmng->history[idx]!=NULL) free(cmng->history[idx]);
+ cmng->history[idx] = p;
+ cmng->history_size += 1; //one day there could be overflow after 2^31/2^63 cmds, good luck with this bug
+ }
+
+ cmd_arg_destroy( args );
+
+ return ret;
+error_cmd:
+ cmd_arg_destroy( args );
+
+error_exe:
+
+ return ret;
+}
+
+int cmd_mng_free( cmd_mng_t *cmng)
+{
+ int ret=0;
+ int i;
+
+ for (i=0;i<CMD_HISTORY_SIZE;i++)
+ {
+ if (cmng->history[i])
+ {
+ free(cmng->history[i]);
+ cmng->history[i] = NULL;
+ }
+ }
+
+ return ret;
+}
+
+/*
+Clothest match function
+AA AB = (1) equile <100%
+AA AA = (3) equite 100%
+AA AAA = (2) equile 100% but there is more
+A B = (0) not equile at all
+*/
+int strncmp_ac(const char *s1, const char *s2, const int n)
+{
+ int i=0;
+
+ if (n<0)
+ {
+ printf("n<0 wrong argument value\n");
+ return 0;
+ }
+
+ /* not equile at all */
+ /* A B */
+ if ( s1[0] != s2[0] )
+ {
+ return 0;
+ }
+
+ i = 0;
+ while ( (s1[i] == s2[i]) && (i<n))
+ {
+ i++;
+ }
+
+ //printf("i");
+ /* AA AA */
+ if ( (s1[i]==0x00) && (s2[i]==0x0) && (i==n) )
+ {
+ //printf("1 ");
+ return i+1;
+ /* AA AAA */
+ } else if ( (s1[i]==0x0) && (s2[i]!=0x0) && (i==n) )
+ {
+ //printf("2 ");
+ return i;
+ /* AAA AA */
+ } else if ( (s1[i]!=0x0) && (s2[i]==0x0) && (i<n) )
+ {
+ //printf("3 ");
+ return -i;
+ /* AA AB */
+ } else if ( (s1[i]!=0x0) && (s2[i]!=0x0) && (s1[i]!=s2[i]) && (i<n) )
+ {
+ //printf("4 ");
+ return -i;
+ } else
+ {
+ printf("Unknown condition\n");
+ }
+
+ return 0;
+} \ No newline at end of file
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