# hwbfiles ver.2 (11-9, 11-5-2022, S.Hayashi)
import numpy as np 

#class fread:
class fileRead:    
# file format:  header = 'x', 'i-y', 'z'
# if first letter is i or I, the item is an integer
#              data 1  = '2.5', 10, '0.1'
#              data 2  = '3.5', 12, '0.2'
#               ...
# number of data equals number of data lines
# number of items is limited by maxitem, i.e. 3
      
    def __init__(self,fname,check): 
        xa = []
        ya = []
        za = []
        maxitem = 3
        isf = np.arange(maxitem)
#        dx = np.arange(maxitem)
        file = open(fname, 'r', encoding='utf-8')
        a_line = file.readline()
        self.header = a_line

        l = len(a_line)
        a_line = a_line[:l-1]
        result = a_line.split(',')
        if check:
            print('Header = ',self.header)

        for x in reversed(result):  # remove ""
            if len(x)>0:
                break
            else:
                result.remove(x)
            
        n_item = len(result)
        for i in range(n_item):
            s = result[i].upper()
            isf[i] = (s[0] != 'I')
            if isf[i]==True:
                print('float, ', end="")
            else:
                print('integer, ', end="")
        print()    

        i = 0
        while (True):
            a_line = file.readline()
            l = len(a_line)
            a_line = a_line[:l-1]
            if len(a_line)==0:            # end of file
                break
            result = a_line.split(',')
            if check:
                print(i+1,') ',result)

            if isf[0]:
                xa.append(float(result[0]))
            else:
                xa.append(int(result[0]))
            if n_item > 1:
                if isf[1]:
                    ya.append(float(result[1]))
                else:
                    ya.append(int(result[1]))
            if n_item > 2:
                if isf[2]:
                    za.append(float(result[2]))
                else:
                    za.append(int(result[2]))
            if check:
                print(i+1,') ',result[0],' ', end='')
                if n_item>1:
                    print(result[1],' ', end='')
                    if n_item>2:
                        print(result[2])
                print()
                
            i += 1               
        file.close()

        self.fname = fname
        self.ndata = i
        self.nitem = n_item
        self.xa = xa
        self.ya = ya
        self.za = za  
    
#def fileRead(f,c):
#    return  fread(f,c)