1 files changed, 57 insertions, 13 deletions

diff --git a/main.c b/main.c
index e0b60ff..57c3b0e 100644
--- a/main.c
+++ b/main.c
@@ -13,7 +13,7 @@ unsigned int num = 0;
 unsigned int pos = 0;
 /* addr1 is the last address, while addr2 is the previous one */
 int addr1, addr2;
-
+char *fname;
 
 
 const char* skip_blank(const char **c){
@@ -99,6 +99,25 @@ int get_addr(const char **cmd){
 }
 
 
+int get_fname(char **cmd){
+  
+  static char b[4096];
+  int s, n;
+  
+  n = sscanf(*cmd, "%s", b);
+  if (n <1 )
+    return 0;
+  fprintf(stderr, " >>> read fname: %s\n", b);
+  s = strlen(b);
+  if (s){
+    fname = realloc(fname, (s+1) * sizeof(char));
+    memcpy(fname, b, s+1);
+    return 1;
+  }
+  return -1;
+}
+
+
 void main_loop(){
   
   char *cmd;
@@ -142,6 +161,19 @@ void main_loop(){
         addr2 = addr1;
       delete_lines();
       break;
+    case 'f':
+      if (ret > 0)
+        E;
+      else{
+        cmd += 1;
+        if (get_fname(&cmd)>=0)
+          printf("%s\n", fname);
+        else{
+          perror(fname);
+          E;
+        }
+      }
+      break;
     case 'i':
       if (addr1 > -1)
         move_to_line(addr1, 0);
@@ -173,6 +205,18 @@ void main_loop(){
     case 'q':
       exit(0);
       break;
+    case 'w':
+      cmd +=1;
+      get_fname(&cmd);
+      if (!fname)
+        E;
+      else{
+        if (write_lines()){
+          perror(fname);
+          E;
+        }
+      }
+      break;
     case '=':
       if (addr1 == -1)
         addr1 = num;
@@ -190,19 +234,19 @@ void main_loop(){
 int main(int argc, char *argv[]){
 
   FILE *fin;
-  
-  if (argc < 2){
-    printf("Usage: %s <filein>\n", argv[0]);
-    exit(1);
-  }
-  
-  if ((fin = fopen(argv[1], "r+"))){
-    read_lines(fin);
-  }
-  else{
-    printf("Error opening file %s\n", argv[1]);
+
+  fname = NULL;
+  if (argc > 1){
+    fname = malloc((strlen(argv[1])+1) * sizeof(char));
+    memcpy(fname, argv[1], strlen(argv[1]) + 1);
+    if (fin = fopen(fname, "r+")){
+      read_lines(fin);
+      fclose(fin);
+    }
+    else{
+      perror(fname);
+    }
   }
-  
   main_loop();
 }