填充表格数据的打印输出 [英] Padding printed output of tabular data
本文介绍了填充表格数据的打印输出的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我知道这可能是死的简单，但我在一个文件中有这样的一些数据：
朝鲜蓟
绿色地球仪，帝国之星，紫罗兰色
24深
豆，利马
布什宝贝，布什利马，Fordhook，Fordhook 242
12宽x 8-10深
我希望能够格式化成一个很好的TSV类型的表，看起来像这样：
名称|品种|容器数据
---------- | ------------- | - -----
这里有些数据很好地填充了间距和右对齐的文本
解决方案
这是一个相当完整的例子，假设如下
我有点小菜鸟，所以无疑有更好更优雅的方法来做到这一点
＃！/ usr / bin / ruby
class Vegetable
@@ max_name || = 0
@@ max_variety || = 0
@@ max_container || = 0
attr_reader：name，：variety，：container
初始化（名称，种类，容器）
@name = name
@variety = variety
@container = container
@@ max_name = set_max（@name .length，@@ max_name）
@@ max_variety = set_max（@ variety.length，@@ max_variety）
@@ max_container = set_max（@ container.length，@@ max_container）
end
def set_max（current，max）
current>最大？ current：max
end
$ b def self.max_name
@@ max_name
end
$ b $ def self.max_variety
@@ max_variety
end
def self.max_container（）
@@ max_container
end
end
产品= []
File.open（veg.txt）do |文件|
while name = file.gets
name = name.strip
variety = file.gets.to_s.strip
container = file.gets.to_s.strip
veg = Vegetable.new（名称，品种，容器）
产品<< veg
end
end
format =％＃{Vegetable.max_name} s\t％＃{Vegetable.max_variety} s\t％＃{Vegetable.max_container （格式，名称，品种，容器）
printf（格式，----，------- ，---------）
products.each do | p |
printf（格式，p.name，p.variety，p.container）
结尾
以下示例文件
朝鲜蓟
绿色地球，帝国之星，紫罗兰色
24深
豆类，利马
布什宝贝，布什利马，福特钩，福特钩242
12宽x 8-10深
土豆
爱德华王，泽西，泽西皇家
36宽x 8-10深
产生以下输出
名称种类容器
---- ------- ---------
朝鲜蓟绿色地球，帝国之星，紫罗兰色24 深
豆，利马布什宝贝，布什利马，Fordhook，Fordhook 242 12宽x 8-10深
土豆爱德华王，Desiree，泽西皇家36宽x 8-10深
I know this is probably dead simple, but I've got some data such as this in one file:
Artichoke
Green Globe, Imperial Star, Violetto
24" deep
Beans, Lima
Bush Baby, Bush Lima, Fordhook, Fordhook 242
12" wide x 8-10" deep
that I'd like to be able to format into a nice TSV type of table, to look something like this:
Name | Varieties | Container Data
----------|------------- |-------
some data here nicely padded with even spacing and right aligned text
解决方案
This is a reasonably full example that assumes the following
- Your list of products is contained in a file called veg.txt
- Your data is arranged across three lines per record with the fields on consecutive lines
I am a bit of a noob to rails so there are undoubtedly better and more elegant ways to do this
#!/usr/bin/ruby
class Vegetable
@@max_name ||= 0
@@max_variety ||= 0
@@max_container ||= 0
attr_reader :name, :variety, :container
def initialize(name, variety, container)
@name = name
@variety = variety
@container = container
@@max_name = set_max(@name.length, @@max_name)
@@max_variety = set_max(@variety.length, @@max_variety)
@@max_container = set_max(@container.length, @@max_container)
end
def set_max(current, max)
current > max ? current : max
end
def self.max_name
@@max_name
end
def self.max_variety
@@max_variety
end
def self.max_container()
@@max_container
end
end
products = []
File.open("veg.txt") do | file|
while name = file.gets
name = name.strip
variety = file.gets.to_s.strip
container = file.gets.to_s.strip
veg = Vegetable.new(name, variety, container)
products << veg
end
end
format="%#{Vegetable.max_name}s\t%#{Vegetable.max_variety}s\t%#{Vegetable.max_container}s\n"
printf(format, "Name", "Variety", "Container")
printf(format, "----", "-------", "---------")
products.each do |p|
printf(format, p.name, p.variety, p.container)
end
The following sample file
Artichoke Green Globe, Imperial Star, Violetto 24" deep Beans, Lima Bush Baby, Bush Lima, Fordhook, Fordhook 242 12" wide x 8-10" deep Potatoes King Edward, Desiree, Jersey Royal 36" wide x 8-10" deep
Produced the following output
Name Variety Container
---- ------- ---------
Artichoke Green Globe, Imperial Star, Violetto 24" deep
Beans, Lima Bush Baby, Bush Lima, Fordhook, Fordhook 242 12" wide x 8-10" deep
Potatoes King Edward, Desiree, Jersey Royal 36" wide x 8-10" deep
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