X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=gacela.c;h=dee76599553337a3b551f46a5f208586bc5b1d22;hb=53ad34084c4f4d6378f71ac04c2aa0c0e6b40e18;hp=1cd7412806fe013cbb22fced8232b5e54fcd6bf9;hpb=d4cff32858a9ff65b06f1430810699a91fbcc2b9;p=gacela.git

diff --git a/gacela.c b/gacela.c
index 1cd7412..dee7659 100644
--- a/gacela.c
+++ b/gacela.c
@@ -1,11 +1,55 @@
 #include <stdio.h>
+#include <readline/readline.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+/* Read-Send-Print-Loop */
+void rspl(int pin, int pout)
+{
+  static char *line = (char *)NULL;
+  int exit = 0;
+
+  while (!exit) {
+    if (line) {
+      free(line);
+      line = (char *)NULL;
+    }
+    
+    line = readline("gacela>");
+    
+    if (line && *line) {
+      add_history(line);
+      if (strcmp(line, "(quit)") == 0)
+	exit = 1;
+      else {
+	write(pout, line, strlen(line));
+	write(pout, "\n", 1);
+      }
+    }
+  }
+}
 
 int main (int argc, char *argv[])
 {
-  char exp[1024];
+  pid_t cpid;
+  int pfd[2];
 
-  printf("gacela>");
-  scanf("%s", exp);
+  pipe(pfd);
+  cpid = fork();
+  if (cpid != 0) {
+    rspl(pfd[0], pfd[1]);
+    return 0;
+  }
+  else {
+    char buf;
 
-  return 0;
+    while (1) {
+      while (read(pfd[0], &buf, 1) > 0) {
+	if (buf == '\n')
+	  write(STDOUT_FILENO, "-\n", 2);
+	else
+	  write(STDOUT_FILENO, &buf, 1);
+      }
+    }
+  }
 }