Similar to this article (using python) https:\/\/blog.ls-al.com\/python-output-align-by-column\/ I also did a quick Golang implementation. <\/p>\n
It is not quite as done as I would like but it is reasonably close. Similar to the python article the idea is to use something like an array to store column header descriptions and a value on how long the output strings should be and use it for header printing as well as line output statements.<\/p>\n
In addition I am doing some file operations here to create the output so the article has additional value.<\/p>\n
\r\npackage main\r\n\r\nimport (\r\n "path\/filepath"\r\n "os"\r\n "flag"\r\n "fmt"\r\n "strconv"\r\n)\r\n\r\ntype rec struct {\r\n fname, fsize string\r\n}\r\n\r\nvar i int64\r\nvar files map[int64]rec\r\nvar FORMAT map[string]int \r\n\r\nfunc PadLeft(str, pad string, length int) string {\r\n for {\r\n str = pad + str\r\n if len(str) > length {\r\n return str[0:length]\r\n }\r\n }\r\n}\r\n\r\nfunc printHeader(FORMAT map[string]int) {\r\n for k, v := range FORMAT {\r\n fmt.Printf("%[1]*[2]s ",v ,k) \r\n }\r\n fmt.Println()\r\n for k, v := range FORMAT {\r\n _ = k\r\n \/\/fmt.Printf("% [1]*[2]s ",v, "#")\r\n fmt.Printf("%s ",PadLeft("","#",v)) \r\n }\r\n fmt.Println()\r\n}\r\n\r\nfunc visit(path string, f os.FileInfo, err error) error {\r\n fi, e := os.Stat(path)\r\n if e != nil {\r\n return e\r\n }\r\n i = i + 1\r\n files[i] = rec{path, strconv.Itoa(int(fi.Size()))}\r\n return nil\r\n} \r\n\r\nfunc main() {\r\n FORMAT := map[string]int{"File Size": 10, "File Name": 11}\r\n printHeader(FORMAT)\r\n files = make(map[int64]rec)\r\n flag.Parse()\r\n root := flag.Arg(0)\r\n err := filepath.Walk(root, visit)\r\n _ = err\r\n \/\/fmt.Printf("filepath.Walk() returned %v\\n", err)\r\n for k, v := range files {\r\n _ = k\r\n fmt.Printf("%[1]*[2]s %[3]*[4]s\\n", FORMAT["File Size"], v.fsize, FORMAT["File Name"], v.fname)\r\n }\r\n}\r\n<\/pre>\nTest Run<\/p>\n
\r\n$ go run header.go \/etc\/default\/\r\n File Size File Name \r\n########## ########### \r\n 346 \/etc\/default\/acpid\r\n 290 \/etc\/default\/anacron\r\n 209 \/etc\/default\/saned\r\n 149 \/etc\/default\/apport\r\n 132 \/etc\/default\/speech-dispatcher\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"Similar to this article (using python) https:\/\/blog.ls-al.com\/python-output-align-by-column\/ I also did a quick Golang implementation. It is not quite as done<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-1252","post","type-post","status-publish","format-standard","hentry","category-go"],"_links":{"self":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/posts\/1252","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/comments?post=1252"}],"version-history":[{"count":0,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/posts\/1252\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/media?parent=1252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/categories?post=1252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/tags?post=1252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}