Shell 0.4 from Albom

git-svn-id: svn://kolibrios.org@959 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/system/shell/module_alias.c

@@ -0,0 +1,133 @@
+
+/// ===========================================================
+
+int alias_check(char alias[])
+{
+
+unsigned i;
+char buf1[256];
+char buf2[256];
+
+if ( !alias_split (alias, buf1, buf2))
+	return FALSE;
+
+for (i = 0; i < NUM_OF_CMD; i++)
+	if ( !strcmp(HELP_COMMANDS[i], buf1) )
+		return -1;
+
+if (NULL == ALIASES)
+	ALIASES = malloc(128*1024);
+
+if (NULL == ALIASES)
+	return FALSE;
+
+if ( 0 == ALIAS_NUM )
+	return FALSE;
+
+for (i = 0; i < ALIAS_NUM; i++)
+	{
+	if ( !strcmp(ALIASES+256*i, buf1) )
+		return TRUE;
+	}
+
+return FALSE;
+
+}
+
+
+/// ===========================================================
+
+int alias_search(char alias[])
+{
+
+unsigned i;
+
+for (i = 0; i < ALIAS_NUM; i++)
+	{
+	if ( !strcmp(ALIASES+256*i, alias) )
+		return i;
+	}
+
+return -1;
+}
+
+/// ===========================================================
+
+int alias_add(char alias[])
+{
+
+char buf1[256];
+char buf2[256];
+
+if ( ALIAS_NUM > 255)
+	return FALSE;
+
+if ( !alias_split (alias, buf1, buf2))
+	return FALSE;
+
+strcpy (ALIASES+256*ALIAS_NUM, buf1);
+strcpy (ALIASES+256*ALIAS_NUM+64*1024, buf2);
+ALIAS_NUM++;
+
+return TRUE;
+}
+
+/// ===========================================================
+
+void alias_list()
+{
+
+unsigned i;
+
+if ( 0 == ALIAS_NUM)
+	return;
+
+for (i = 0; i < ALIAS_NUM; i++)
+	printf ("  %s=%s\n\r",ALIASES+256*i, ALIASES+256*i+64*1024); 
+}
+
+/// ===========================================================
+
+int alias_split (char alias[], char s1[], char s2[])
+{
+
+unsigned i, j;
+
+if (NULL == strchr(alias, '='))
+	return FALSE;
+
+for (i=0, j = 0;; i++)
+	{
+	if ('=' == alias[i])
+		{
+		s1[i]='\0';
+		break;
+		}
+	s1[i]=alias[i];
+	}
+
+j = 0;
+
+for (;; i++, j++)
+	{
+	s2[j]=alias[i];
+	if ('\0' == alias[i])
+		break;
+	}
+
+trim(s1); 
+
+for (i=0;;i++)
+	{
+	s2[i] = s2[i+1];
+	if ('\0' == s2[i] )
+		break;
+	}
+
+trim(s2);
+
+return TRUE;
+
+}
+
+/// ===========================================================