From f3ff57c28a72901cd7271412b2a420107d6315b1 Mon Sep 17 00:00:00 2001
From: Paul Gauthier <paul@geomagical.com>
Date: Thu, 6 Apr 2023 22:30:52 -0700
Subject: [PATCH] append

---
 coder.py | 80 +++++++++++++++++++++++++++++++++-----------------------
 1 file changed, 48 insertions(+), 32 deletions(-)

diff --git a/coder.py b/coder.py
index 22e93f122..4c80551a6 100755
--- a/coder.py
+++ b/coder.py
@@ -24,28 +24,31 @@ You are an expert at understanding code and proposing code changes in response t
 
 Ask any questions you need to fully understand the user's request.
 
+DO NOT REPLACE ENTIRE FILES!
+
 YOU MUST ONLY RETURN CODE USING THESE COMMANDS:
   - BEFORE/AFTER
   - DELETE
   - APPEND
   - PREPEND
 
-** This is how to use the CHANGE command:
+** This is how to replace lines from a file with a new set of lines.
 
 BEFORE path/to/filename.ext
 ```
 ... a series of lines from ...
 ... the original file ...
 ... completely unchanged ...
-... include only the sections of the file which need changes! ...
-... don't include the entire before file! ...
+... include ONLY the sections of the file which need changes! ...
+... DO NOT USE THIS TO REPLACE AN ENTIRE FILES CONTENTS ...
 ```
 AFTER
 ```
-... the lines to replace them with ...
+... all occurances of the before lines ...
+... will get replaced with the after lines ...
 ```
 
-** This is how to use the DELETE command:
+** This is how to remove lines from a file:
 
 DELETE path/to/filename.ext
 ```
@@ -55,7 +58,7 @@ DELETE path/to/filename.ext
 ... that will be deleted ...
 ```
 
-** This is how to use the APPEND command:
+** This is how to append lines onto the end of a file:
 
 APPEND path/to/filename.ext
 ```
@@ -63,7 +66,7 @@ APPEND path/to/filename.ext
 ... at the end of the file ...
 ```
 
-** This is how to use the PREPEND command:
+** This is how to insert lines at the start of a file:
 
 PREPEND path/to/filename.ext
 ```
@@ -91,6 +94,13 @@ path/to/filename.ext
 ```
 '''
 
+
+def find_index(list1, list2):
+    for i in range(len(list1)):
+        if list1[i:i+len(list2)] == list2:
+            return i
+    return -1
+
 class Coder:
     fnames = []
     def system(self, prompt):
@@ -226,7 +236,7 @@ class Coder:
 
         pieces = lines[0].split()
         cmd = pieces[0]
-        if cmd not in ('BEFORE', 'AFTER'):
+        if cmd not in ('BEFORE', 'AFTER', 'APPEND'):
             raise ValueError(cmd)
 
         if len(pieces) > 1:
@@ -255,6 +265,22 @@ class Coder:
             if cmd == 'BEFORE':
                 after_op = ops.pop()
                 self.do_before(cmd, fname, op_lines, after_op)
+                continue
+            if cmd == 'APPEND':
+                self.do_append(cmd, fname, op_lines)
+                continue
+
+    def do_append(self, cmd, fname, op_lines):
+        if fname not in self.fnames:
+            raise ValueError(fname)
+
+        fname = Path(fname)
+        content = fname.read_text()
+        if content[-1] != '\n':
+            content += '\n'
+        content += '\n'.join(op_lines)
+        content += '\n'
+        fname.write_text(content)
 
     def do_before(self, cmd, fname, op_lines, after_op):
         after_cmd,after_fname,after_lines = self.parse_op(after_op)
@@ -265,45 +291,35 @@ class Coder:
 
         fname = Path(fname)
 
-        content = fname.read_text()
-        before = '\n'.join(op_lines)
-        after = '\n'.join(after_lines)
-        if before not in content:
+        content = fname.read_text().splitlines()
+        before = [l.strip() for l in op_lines]
+        stripped_content = [l.strip() for l in content]
+        where = find_index(stripped_content, before)
+
+        if where < 0:
             raise ValueError(before)
 
-        content = content.replace(before, after)
-        fname.write_text(content)
+        new_content = content[:where]
+        new_content += after_lines
+        new_content += content[where+len(before):]
+        new_content = '\n'.join(new_content) + '\n'
+
+        fname.write_text(new_content)
 
 
 
 
 
 coder = Coder()
-coder.file('../easy-chat/chat.css')
-coder.update_files('''
-BEFORE ../easy-chat/chat.css
-```
-.chat-box .fa-volume-up {
-    color: #4CAF50;
-}
-```
-
-AFTER
-```
-.chat-box .fa-volume-up {
-    color: orange;
-}
-```
-''')
-sys.exit()
 
 coder.system(prompt_webdev)
 
 for fname in sys.argv[1:]:
     coder.file(Path(fname))
 
-coder.run()
+coder.update_files(Path('tmp.commands').read_text()) ; sys.exit()
 
+coder.run()
 
 #dname = Path('../easy-chat')
 #coder.file(dname / 'index.html')