Parsing commandline arguments

user/tb/main.c

@@ -1,12 +1,76 @@
+#include <stdint.h>
+#include <stddef.h>
 #include <uprintf.h>
-#include <dlmalloc/malloc.h>
-#include <args.h>
+#include <args/args.h>
+#include <string/string.h>
+#include <string/char.h>
+#include <log.h>
+#include <ansiq/all.h>
+#include <system/system.h>
+#include <sysdefs/ipcpipe.h>
 
-void main(void) {
-  uprintf("Hello from tb!\n");
+static struct {
+  char *modestr;
+  enum { MODE_INTERACTIVE = 1, MODE_RUNFILE = 2 } mode;
+} CONFIG;
 
-  for (size_t i = 0; i < argslen(); i++) {
-    uprintf("i = %d\n", i);
-    uprintf("arg: %s\n", args()[i]);
+#define LINEBUF_MAX 1024
+
+static Arg ARGS[] = {
+  ARG("-m", ARG_STRING, &CONFIG.modestr),
+  ARG_END(),
+};
+
+void set_config(void) {
+  int32_t ret;
+  if ((ret = parse_args(args(), argslen(), ARGS)) < 0) {
+    uprintf("Could not parse args: %d\n", ret);
+  }
+
+  if (CONFIG.modestr != NULL) {
+    if (string_strcmp(CONFIG.modestr, "interactive") == 0) {
+      CONFIG.mode = MODE_INTERACTIVE;
+    } else if (string_strcmp(CONFIG.modestr, "runfile") == 0) {
+      CONFIG.mode = MODE_RUNFILE;
+    } else {
+      LOG(LOG_ERR, "Unknown mode %s\n", CONFIG.modestr);
+    }
+  } else {
+    CONFIG.mode = MODE_RUNFILE;
+  }
+  uprintf("CONFIG.mode = %d\n", CONFIG.mode);
+}
+
+void process_cmd(char *cmdtext) {
+
+}
+
+void do_mode_interactive(void) {
+  char linebuf[LINEBUF_MAX];
+  size_t cursor;
+  for(;;) {
+    uprintf("tb# ");
+
+    cursor = 0;
+    string_memset(linebuf, 0, LINEBUF_MAX);
+    char c = 0;
+    while (c != '\n') {
+      int32_t rd = ipcpipe(IPCPIPE_SELFPID, IPCPIPE_IN, IPCPIPE_READ, (uint8_t *)&c, 1);
+      if (rd > 0 && cursor < LINEBUF_MAX) {
+        linebuf[cursor++] = c;
+      }
+    }
+    linebuf[cursor - 1] = '\0';
+    uprintf("\n");
+
+    process_cmd(linebuf);
+  }
+}
+
+void main(void) {
+  set_config();
+
+  if (CONFIG.mode == MODE_INTERACTIVE) {
+    do_mode_interactive();
   }
 }