@ -11,47 +11,40 @@ import (
"strings"
)
const VERSION = "1. 1 .0"
const VERSION = "1. 2 .0"
func main ( ) {
log . SetFlags ( 0 )
switch len ( os . Args ) {
case 1 : // first we read data from stdin and then convert it
data , err := readRawCsv ( )
if err != nil {
log . Fatal ( err )
}
print ( data )
case 2 : // but if 2nd arg is present
// probably user wants to get help
help1 := flag . Bool ( "h" , false , "Get help" )
help2 := flag . Bool ( "help" , false , "Get help" )
flag . Parse ( )
if os . Args [ 1 ] == "help" || * help1 || * help2 {
usage ( os . Stdout )
os . Exit ( 0 )
}
filepath := flag . String ( "f" , "" , "File path" )
is_help := flag . Bool ( "help" , false , "Get help" )
as_tsv := flag . Bool ( "t" , false , "Parse as tsv" )
flag . Parse ( )
// ...or to convert data from file
src , err := ExpandPath ( os . Args [ 1 ] )
if err != nil {
log . Fatal ( err )
}
if _ , err := os . Stat ( src ) ; err != nil {
log . Fatal ( err )
}
if * is_help {
usage ( os . Stdout )
os . Exit ( 0 )
}
data , err := readCsvFile ( src )
if err != nil {
log . Fatal ( err )
}
print ( data )
if * filepath == "" {
data , err := readRawCsv ( * as_tsv )
if err != nil {
log . Fatal ( err )
}
print ( data )
} else {
src , err := ExpandPath ( * filepath )
if err != nil {
log . Fatal ( err )
}
if _ , err := os . Stat ( src ) ; err != nil {
log . Fatal ( err )
}
// otherwise let's show usage help and exit (probably inaccessible code, but anyway)
default :
usage ( os . Stdout )
os . Exit ( 0 )
data , err := readCsvFile ( src , * as_tsv )
if err != nil {
log . Fatal ( err )
}
print ( data )
}
}
@ -77,7 +70,7 @@ func ExpandPath(path string) (string, error) {
}
// readRawCsv read data from file
func readCsvFile ( filePath string ( [ ] [ ] string , error ) {
func readCsvFile ( filePath string , as_tsv bool ) ( [ ] [ ] string , error ) {
f , err := os . Open ( filePath )
if err != nil {
return nil , errors . New ( "Failed to open file '" + filePath + "': " + err . Error ( ) )
@ -85,21 +78,30 @@ func readCsvFile(filePath string) ([][]string, error) {
defer f . Close ( )
csvReader := csv . NewReader ( f )
if as_tsv {
csvReader . Comma = '\t'
}
records , err := csvReader . ReadAll ( )
if err != nil {
return nil , errors . New ( "Failed to parse CSV from file '" + filePath + "': " + err . Error ( ) )
return nil , errors . New ( "Failed to parse file '" + filePath + "': " + err . Error ( ) )
}
return records , nil
}
// readRawCsv read data from stdin
func readRawCsv ( ) ( [ ] [ ] string , error ) {
func readRawCsv ( as_tsv bool ) ( [ ] [ ] string , error ) {
csvReader := csv . NewReader ( os . Stdin )
if as_tsv {
csvReader . Comma = '\t'
}
records , err := csvReader . ReadAll ( )
if err != nil {
return nil , errors . New ( "Failed to parse CSV from stdin: " + err . Error ( ) )
return nil , errors . New ( "Failed to parse input from stdin: " + err . Error ( ) )
}
return records , nil
}
@ -127,20 +129,25 @@ func convert(records [][]string) []string {
func usage ( writer * os . File ) {
usage := [ ] string {
"csv2md v" + VERSION ,
"Anthony Axenov (c) 2022, MIT l icense",
"Anthony Axenov (c) 2022, MIT L icense",
"https://github.com/anthonyaxenov/csv2md" ,
"" ,
"Usage:" ,
"\tcsv2md (-h|-help|--help|help) # to get this help" ,
"\tcsv2md example.csv # convert data from file and write result in stdout" ,
"\tcsv2md < example.csv # convert data from stdin and write result in stdout" ,
"\tcat example.csv | csv2md # convert data from stdin and write result in stdout" ,
"\tcsv2md example.csv > example.md # convert data from file and write result in new file" ,
"\tcsv2md example.csv | less # convert data from file and write result in stdout using pager" ,
"\tcsv2md # paste or type data to stdin by hands" ,
"\t # press Ctrl+D to view result in stdout" ,
"\tcsv2md > example.md # paste or type data to stdin by hands" ,
"\t # press Ctrl+D to write result in new file" ,
"\tcsv2md [-help|--help] [-t] [-f <FILE>]" ,
"" ,
"Available arguments:" ,
"\t-help|--help - get this help" ,
"\t-f=<FILE>|-f <FILE> - convert specified FILE" ,
"\t-t - convert input as TSV" ,
"" ,
"FILE formats supported:" ,
"\t- csv (default)" ,
"\t- tsv (with -t flag)" ,
"" ,
"Path to FILE may be presented as:" ,
"\t- absolute" ,
"\t- relative to current working directory" ,
"\t- relative to user home directory (~)" ,
}
for _ , str := range usage {
fmt . Fprintln ( writer , str )
