ulib uprintf to pipe not termdev, ulib Add stringbuffer and linearlist, tb Capture subshell output

user/tb/main.c

@@ -10,13 +10,19 @@ PID_t PID;
 
 struct {
   char *modestr;
-  enum { MODE_INTERACTIVE = 1, MODE_RUNFILE = 2 } mode;
+  enum {
+    MODE_INTERACTIVE = 1,
+    MODE_RUNFILE = 2,
+    MODE_RUNSTRING = 3,
+  } mode;
 
   char *filepath;
 
   bool logcmds;
 
   char *preloadpath;
+
+  char *runstring;
 } CONFIG;
 
 static Arg ARGS[] = {
@@ -24,6 +30,7 @@ static Arg ARGS[] = {
   ARG("-f", ARG_STRING, &CONFIG.filepath),
   ARG("-logcmds", ARG_BOOL, &CONFIG.logcmds),
   ARG("-preload", ARG_STRING, &CONFIG.preloadpath),
+  ARG("-rs", ARG_STRING, &CONFIG.runstring),
   ARG_END(),
 };
 
@@ -40,6 +47,8 @@ void set_config(void) {
       CONFIG.mode = MODE_INTERACTIVE;
     } else if (string_strcmp(CONFIG.modestr, "runfile") == 0) {
       CONFIG.mode = MODE_RUNFILE;
+    } else if (string_strcmp(CONFIG.modestr, "runstring") == 0) {
+      CONFIG.mode = MODE_RUNSTRING;
     } else {
       LOG(LOG_ERR, "Unknown mode %s\n", CONFIG.modestr);
     }
@@ -142,7 +151,6 @@ void main(void) {
   set_config();
 
   if (CONFIG.preloadpath != NULL) {
-    LOG(LOG_INF, "Preloading script: %s\n", CONFIG.preloadpath);
     do_file(CONFIG.preloadpath);
   }
 
@@ -154,5 +162,21 @@ void main(void) {
       return;
     }
     do_file(CONFIG.filepath);
+  } else if (CONFIG.mode == MODE_RUNSTRING) {
+    if (CONFIG.runstring == NULL) {
+      uprintf("Run string is empty\n");
+      return;
+    }
+    InterpResult *res;
+    if (CONFIG.runstring[0] == '\'') {
+      CONFIG.runstring[0] = ' ';
+    }
+    size_t len = string_len(CONFIG.runstring);
+    if (CONFIG.runstring[len] == '\'') {
+      CONFIG.runstring[len] = ' ';
+    }
+    if (!interp_runstring(CONFIG.runstring, &res, CONFIG.logcmds, false)) {
+      LOG(LOG_ERR, "%s\n", res->errmsg);
+    }
   }
 }