Reformat header patterns with more whitespace for readability.

Author: Benjamin Moody

wfdb/io/_header.py

@@ -102,31 +102,41 @@
 # Record line
 _rx_record = re.compile(
     r'''
-    [ \t]*
-    (?P<record_name>[-\w]+)/?(?P<n_seg>\d*)[ \t]+
-    (?P<n_sig>\d+)[ \t]*(?P<fs>\d*\.?\d*)/*(?P<counter_freq>-?\d*\.?\d*)
-    \(?(?P<base_counter>-?\d*\.?\d*)\)?[ \t]*(?P<sig_len>\d*)[ \t]*
-    (?P<base_time>\d{,2}:?\d{,2}:?\d{,2}\.?\d{,6})[ \t]*
-    (?P<base_date>\d{,2}/?\d{,2}/?\d{,4})
+    [ \t]* (?P<record_name>[-\w]+)
+           /?(?P<n_seg>\d*)
+    [ \t]+ (?P<n_sig>\d+)
+    [ \t]* (?P<fs>\d*\.?\d*)
+           /*(?P<counter_freq>-?\d*\.?\d*)
+           \(?(?P<base_counter>-?\d*\.?\d*)\)?
+    [ \t]* (?P<sig_len>\d*)
+    [ \t]* (?P<base_time>\d{,2}:?\d{,2}:?\d{,2}\.?\d{,6})
+    [ \t]* (?P<base_date>\d{,2}/?\d{,2}/?\d{,4})
     ''', re.VERBOSE)
 
 # Signal line
 _rx_signal = re.compile(
     r'''
-    [ \t]*
-    (?P<file_name>~?[-\w]*\.?[\w]*)[ \t]+(?P<fmt>\d+)x?
-    (?P<samps_per_frame>\d*):?(?P<skew>\d*)\+?(?P<byte_offset>\d*)[ \t]*
-    (?P<adc_gain>-?\d*\.?\d*e?[\+-]?\d*)\(?(?P<baseline>-?\d*)\)?
-    /?(?P<units>[\w\^\-\?%\/]*)[ \t]*(?P<adc_res>\d*)[ \t]*
-    (?P<adc_zero>-?\d*)[ \t]*(?P<init_value>-?\d*)[ \t]*(?P<checksum>-?\d*)
-    [ \t]*(?P<block_size>\d*)[ \t]*(?P<sig_name>[\S]?[^\t\n\r\f\v]*)
+    [ \t]* (?P<file_name>~?[-\w]*\.?[\w]*)
+    [ \t]+ (?P<fmt>\d+)
+           x?(?P<samps_per_frame>\d*)
+           :?(?P<skew>\d*)
+           \+?(?P<byte_offset>\d*)
+    [ \t]* (?P<adc_gain>-?\d*\.?\d*e?[\+-]?\d*)
+           \(?(?P<baseline>-?\d*)\)?
+           /?(?P<units>[\w\^\-\?%\/]*)
+    [ \t]* (?P<adc_res>\d*)
+    [ \t]* (?P<adc_zero>-?\d*)
+    [ \t]* (?P<init_value>-?\d*)
+    [ \t]* (?P<checksum>-?\d*)
+    [ \t]* (?P<block_size>\d*)
+    [ \t]* (?P<sig_name>[\S]?[^\t\n\r\f\v]*)
     ''', re.VERBOSE)
 
 # Segment line
 _rx_segment = re.compile(
     r'''
-    [ \t]*
-    (?P<seg_name>[-\w]*~?)[ \t]+(?P<seg_len>\d+)
+    [ \t]* (?P<seg_name>[-\w]*~?)
+    [ \t]+ (?P<seg_len>\d+)
     ''', re.VERBOSE)
 
 class BaseHeaderMixin(object):