From 02acd28f0641667ff658a4e5a19061ef8657e697 Mon Sep 17 00:00:00 2001
From: Amit Prasad <17amitprasad@gmail.com>
Date: Tue, 17 Dec 2019 20:29:04 -0500
Subject: [PATCH] Added ability to modify colors using methods ( .lighten(%),
 .darken(%), .saturate(%) for now)

---
 pywal/colors.py |  3 +++
 pywal/export.py | 59 +++++++++++++++++++++++++++----------------------
 pywal/util.py   | 13 ++++++++---
 3 files changed, 45 insertions(+), 30 deletions(-)

diff --git a/pywal/colors.py b/pywal/colors.py
index 99d346d..6dc5105 100644
--- a/pywal/colors.py
+++ b/pywal/colors.py
@@ -48,6 +48,9 @@ def colors_to_dict(colors, img):
             "color13": colors[13],
             "color14": colors[14],
             "color15": colors[15]
+        },
+        "modified": {
+
         }
     }
 
diff --git a/pywal/export.py b/pywal/export.py
index b175c11..ae619cd 100644
--- a/pywal/export.py
+++ b/pywal/export.py
@@ -13,38 +13,43 @@ def template(colors, input_file, output_file=None):
     """Read template file, substitute markers and
        save the file elsewhere."""
     template_data = util.read_file_raw(input_file)
-    matches = re.finditer(r"(?<=(?<!\{))(\{([^{}]+)\})(?=(?!\}))", "".join(template_data), re.MULTILINE)
-    print(colors)
-    for match in matches:
-        # Check that this color doesn't already exist
-        match_str = match.group(2)
-        color, _, funcs = match_str.partition(".")
-        #if len(funcs) != 0:
-            #print(funcs)
-        #print(colors[color].hex_color,input_file)
-
-        '''if match_str not in colors:
-            # Extract original color and functions
-            attr, _, funcs = match_str.partition(".")
-            original_color = colors[attr]
-            funcs = funcs.split(".")
-            # Apply every function to the original color
-            for func in funcs:
-                # Check if this sub-color has already been generated
-                if not hasattr(original_color, func):
-                    # Generate new color using function from util.py
-                    func, arg = func.strip(")").split("(")
-                    arg = arg.split(",")
-                    new_color = util.Color(
-                        getattr(util, func)(original_color.hex_color, *arg))
-                    setattr(original_color, func, new_color)
-                    original_color = getattr(original_color, func)'''
+    for i in range(len(template_data)):
+        line = template_data[i]
+        matches = re.finditer(r"(?<=(?<!\{))(\{([^{}]+)\})(?=(?!\}))", line)
+        for match in matches:
+            # Check that this color doesn't already exist
+            color, _, funcs = match.group(2).partition(".")
+            if len(funcs) != 0:
+                to_replace = color
+                new_color = None
+                for func in funcs.split(")"):
+                    if len(func) == 0:
+                        continue
+                    func_split = func.split("(")
+                    if len(func_split) > 1:
+                        args = func_split[1].split(",")
+                    else:
+                        args = []
+                    name = func_split[0]
+                    if name[0] == '.':
+                        name = name[1:]
+                    x = getattr(colors[color], name)
+                    if callable(x):
+                        new_color = x(*args)
+                        if func[0] != '.':
+                            to_replace += "."
+                        to_replace += func + ")"
+                    else:
+                        pass
+                if not new_color is None:
+                    cname = "color" + new_color.strip
+                    template_data[i] = line.replace(to_replace, cname)
+                    colors[cname] = new_color
     try:
         template_data = "".join(template_data).format(**colors)
     except ValueError:
         logging.error("Syntax error in template file '%s'.", input_file)
         return
-
     util.save_file(template_data, output_file)
 
 
diff --git a/pywal/util.py b/pywal/util.py
index 2fe0762..c105a56 100644
--- a/pywal/util.py
+++ b/pywal/util.py
@@ -9,6 +9,7 @@ import shutil
 import subprocess
 import sys
 import platform
+import re
 
 
 class Color:
@@ -57,10 +58,17 @@ class Color:
         """Strip '#' from color."""
         return self.hex_color[1:]
 
-    @property
     def lighten(self,percent):
         """Lighten color by percent"""
-        return lighten_color(self.hex_color,percent/100)
+        return Color(lighten_color(self.hex_color,float(re.sub(r'[\D\.]','',percent))/100))
+
+    def darken(self,percent):
+        """Darken color by percent"""
+        return Color(darken_color(self.hex_color,float(re.sub(r'[\D\.]','',percent))/100))
+
+    def saturate(self,percent):
+        """Saturate a color"""
+        return Color(saturate_color(self.hex_color,float(re.sub(r'[\D\.]','',percent))/100))
 
 
 def read_file(input_file):
@@ -68,7 +76,6 @@ def read_file(input_file):
     with open(input_file, "r") as file:
         return file.read().splitlines()
 
-
 def read_file_json(input_file):
     """Read data from a json file."""
     with open(input_file, "r") as json_file: