general: Added logging.

5 files changed, 21 insertions, 18 deletions

diff --git a/pywal/backends/colorthief.py b/pywal/backends/colorthief.py
index 180af5f..7b2e2bc 100644
--- a/pywal/backends/colorthief.py
+++ b/pywal/backends/colorthief.py
@@ -1,14 +1,15 @@
 """
 Generate a colorscheme using ColorThief.
 """
+import logging
 import sys
 
 try:
     from colorthief import ColorThief
 
 except ImportError:
-    print("error: ColorThief wasn't found on your system.",
-          "Try another backend. (wal --backend)")
+    logging.error("ColorThief wasn't found on your system.")
+    logging.error("Try another backend. (wal --backend)")
     sys.exit(1)
 
 from .. import util
@@ -25,13 +26,12 @@ def gen_colors(img):
             break
 
         elif i == 19:
-            print("colors: ColorThief couldn't generate a suitable palette",
-                  "for the image. Exiting...")
+            logging.error("ColorThief couldn't generate a suitable palette.")
             sys.exit(1)
 
         else:
-            print("colors: ColorThief couldn't create a suitable palette, "
-                  "trying a larger palette size", 8 + i)
+            logging.warning("ColorThief couldn't generate a palette.")
+            logging.warning("Trying a larger palette size %s", 8 + i)
 
     return [util.rgb_to_hex(color) for color in raw_colors]
 
diff --git a/pywal/backends/colorz.py b/pywal/backends/colorz.py
index 0c5148d..490f585 100644
--- a/pywal/backends/colorz.py
+++ b/pywal/backends/colorz.py
@@ -1,6 +1,7 @@
 """
 Generate a colorscheme using Colorz.
 """
+import logging
 import shutil
 import subprocess
 import sys
@@ -28,8 +29,8 @@ def adjust(cols, light):
 def get(img, light=False):
     """Get colorscheme."""
     if not shutil.which("colorz"):
-        print("error: Colorz wasn't found on your system.",
-              "Try another backend. (wal --backend)")
+        logging.error("Colorz wasn't found on your system.")
+        logging.error("Try another backend. (wal --backend)")
         sys.exit(1)
 
     cols = [col.decode('UTF-8').split()[0] for col in gen_colors(img)]
diff --git a/pywal/backends/haishoku.py b/pywal/backends/haishoku.py
index 413c9d7..00025b2 100644
--- a/pywal/backends/haishoku.py
+++ b/pywal/backends/haishoku.py
@@ -1,14 +1,15 @@
 """
 Generate a colorscheme using Haishoku.
 """
+import logging
 import sys
 
 try:
     from haishoku.haishoku import Haishoku
 
 except ImportError:
-    print("error: Haishoku wasn't found on your system.",
-          "Try another backend. (wal --backend)")
+    logging.error("Haishoku wasn't found on your system.")
+    logging.error("Try another backend. (wal --backend)")
     sys.exit(1)
 
 from .. import colors
diff --git a/pywal/backends/schemer2.py b/pywal/backends/schemer2.py
index 87873ec..adae650 100644
--- a/pywal/backends/schemer2.py
+++ b/pywal/backends/schemer2.py
@@ -1,6 +1,7 @@
 """
 Generate a colorscheme using Schemer2.
 """
+import logging
 import shutil
 import subprocess
 import sys
@@ -26,8 +27,8 @@ def adjust(cols, light):
 def get(img, light=False):
     """Get colorscheme."""
     if not shutil.which("schemer2"):
-        print("error: Schemer2 wasn't found on your system.",
-              "Try another backend. (wal --backend)")
+        logging.error("Schemer2 wasn't found on your system.")
+        logging.error("Try another backend. (wal --backend)")
         sys.exit(1)
 
     cols = [col.decode('UTF-8') for col in gen_colors(img)]
diff --git a/pywal/backends/wal.py b/pywal/backends/wal.py
index 678c66c..cd13092 100644
--- a/pywal/backends/wal.py
+++ b/pywal/backends/wal.py
@@ -1,6 +1,7 @@
 """
 Generate a colorscheme using imagemagick.
 """
+import logging
 import re
 import shutil
 import subprocess
@@ -26,8 +27,8 @@ def has_im():
     elif shutil.which("convert"):
         return ["convert"]
 
-    print("error: ImageMagick wasn't found on your system.",
-          "Try another backend. (wal --backend)")
+    logging.error("Imagemagick wasn't found on your system.")
+    logging.error("Try another backend. (wal --backend)")
     sys.exit(1)
 
 
@@ -43,13 +44,12 @@ def gen_colors(img):
             break
 
         elif i == 19:
-            print("colors: Imagemagick couldn't generate a suitable palette",
-                  "for the image. Exiting...")
+            logging.error("Imagemagick couldn't generate a suitable palette.")
             sys.exit(1)
 
         else:
-            print("colors: Imagemagick couldn't generate a suitable palette, "
-                  "trying a larger palette size", 16 + i)
+            logging.warning("Imagemagick couldn't generate a palette.")
+            logging.warning("Trying a larger palette size %s", 16 + i)
 
     return [re.search("#.{6}", str(col)).group(0) for col in raw_colors[1:]]