libc.obj: add system

programs/develop/ktcc/trunk/libc.obj/include/stdlib.h

@@ -11,9 +11,8 @@
 #define min(a, b) ((a) < (b) ? (a) : (b))
 #define max(a, b) ((a) > (b) ? (a) : (b))
 
-
 #define EXIT_SUCCESS 0 // Successful execution of a program
-#define EXIT_FAILURE 1 // Unsuccessful execution of a program 
+#define EXIT_FAILURE 1 // Unsuccessful execution of a program
 
 typedef struct {
     int quot;
@@ -60,8 +59,8 @@ DLLAPI void _exit(int status);
 
 DLLAPI void abort();
 DLLAPI void exit(int status);
-DLLAPI int atexit( void (*func)(void) );
-	
+DLLAPI int atexit(void (*func)(void));
+
 DLLAPI void srand(unsigned s);
 DLLAPI int rand(void);
 
@@ -80,4 +79,6 @@ DLLAPI int abs(int);
 DLLAPI long labs(long);
 DLLAPI long long llabs(long long);
 
+DLLAPI int system(const char* command);
+
 #endif

programs/develop/ktcc/trunk/libc.obj/source/libc.c

@@ -103,6 +103,7 @@
 #include "stdlib/strtod.c"
 #include "stdlib/strtol.c"
 #include "stdlib/abort.c"
+#include "stdlib/system.c"
 
 #include "math/acosh.c"
 #include "math/asinh.c"
@@ -183,6 +184,7 @@ ksys_dll_t EXPORTS[] = {
     { "realloc", &realloc },
     { "strtol", &strtol },
     { "abort", &abort},
+    { "system", &system },
     { "srand", &srand },
     { "rand", &rand },
     { "qsort", &qsort },

programs/develop/ktcc/trunk/libc.obj/source/stdlib/system.c

@@ -0,0 +1,52 @@
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ksys.h>
+
+static int __system_parse_command(const char* command, char** path, char** args)
+{
+    if (command == NULL || path == NULL || args == NULL) {
+        return -1;
+    }
+    const char* space = strchr(command, ' ');
+    if (space == NULL) {
+        *path = strdup(command);
+        if (*path == NULL) {
+            return -1;
+        }
+        *args = NULL;
+        return 0;
+    }
+
+    size_t path_len = space - command;
+    *path = (char*)malloc(path_len + 1);
+    if (*path == NULL) {
+        return -1;
+    }
+    strncpy(*path, command, path_len);
+    (*path)[path_len] = '\0';
+
+    size_t args_len = strlen(space) + 1;
+    *args = (char*)malloc(args_len + 1);
+    if (*args == NULL) {
+        free(*path);
+        return -1;
+    }
+    strcpy(*args, space);
+
+    return 0;
+}
+
+int system(const char* command)
+{
+    if (command == NULL || *command == '\0')
+        return 1;
+    char* cmd;
+    char* args;
+
+    int ret = _ksys_exec(cmd, args);
+
+    free(cmd);
+    free(args);
+
+    return ret;
+}