4 files changed, 101 insertions, 24 deletions

diff --git a/TODO.org b/TODO.org
index b4c0c48..b0a6e36 100644
--- a/TODO.org
+++ b/TODO.org
@@ -1,22 +1,32 @@
 #+TODO: TODO IN-PROGRESS | DONE
 
 
-* TODO Commands
+* IN-PROGRESS FIXME
+** DONE check file name input in 'f' and 'w'
+
+
+* IN-PROGRESS Commands [3/20]
 ** DONE c
-** TODO w
-** TODO W
+** DONE w
 ** TODO e
+** TODO W
 ** TODO E
-** TODO f
-** TODO h
-** TODO H
 ** TODO j
-** TODO Q
-** IN-PROGRESS q -- check for changes
 ** TODO r
-** TODO s
 ** TODO t
 ** TODO m
-** TODO !
+** TODO s
 ** TODO k
 ** TODO g,G,v,V
+** IN-PROGRESS q -- check for changes
+** TODO h
+** TODO H
+** TODO Q
+** TODO !
+** TODO r !
+** TODO w !
+** DONE f
+
+* TODO Addresses
+** TODO  Offsets (+-)
+** TODO ;
diff --git a/buff.c b/buff.c
index 96cb12f..6462230 100644
--- a/buff.c
+++ b/buff.c
@@ -273,3 +273,24 @@ void change_lines(){
   addr2 = addr1 =pos;
   append_lines();
 }
+
+
+
+int write_lines(){
+  FILE *fout;
+  line_t *l;
+  int tot=0;
+  
+  if (! (fout = fopen(fname, "w+"))){
+    return -1;
+  }
+
+  l = b_start;
+  while(l){
+    tot += fprintf(fout, "%s", l->c);
+    l = l->next;
+  }
+  fclose(fout);
+  printf("%d\n", tot);
+  return 0;
+}
diff --git a/buff.h b/buff.h
index 740006d..f97ed78 100644
--- a/buff.h
+++ b/buff.h
@@ -23,6 +23,8 @@ extern line_t *cur;
 extern unsigned int num;
 extern unsigned int pos;
 extern int addr1, addr2;
+extern char *fname;
+
 
 int read_lines(FILE *);
 void print_lines(char);
@@ -32,7 +34,7 @@ void print_lineno();
 void append_lines();
 void insert_lines();
 void delete_lines();
-
+int write_lines();
 
 
 #endif /* __BUFF_H__ */
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();
 }