[go-nuts] Re: Reading an .ini file

[mhhcbon]

I can reproduce your problem by inserting the BOM in front of the file.

printf '\xEF\xBB\xBF;blah\nff=ff' > test.ini

A quick and dirty fix might look like this, 
it wraps the read operation with a bomskipreader, 
which jobs is to detect and get ride of the bom if detected, 
thus its like it was never there was when the vendor read lines 
at https://github.com/vaughan0/go-ini/blob/master/ini.go#L76


package main

import (
    "fmt"
    "io"
    "os"

    ini "github.com/vaughan0/go-ini"
)

func main() {
    file, err := os.Open("test.ini")
    if err != nil {
        panic(err)
    }
    ini, err := ini.Load(&bomSkipReader{R: file})
    if err != nil {
        panic(err)
    }
    fmt.Println(ini)
}

// the quick and dirty way.

type bomSkipReader struct {
    R    io.Reader
    sent bool
}

func (l bomSkipReader) Read(p []byte) (int, error) {
    n, err := l.R.Read(p)
    if l.sent == false {
        if len(p) > 3 {
            if p[0] == 0xef && p[1] == 0xbb && p[2] == 0xbf {
                p = append(p[:0], p[3:]...)
                n -= 3
            }
            l.sent = true
        }
    }
    fmt.Printf("%#v\n", p[:5])
    return n, err
}

PS: something is flaky with the editor of this NG :x

On Saturday, January 14, 2017 at 5:46:47 PM UTC+1, buc...@gmail.com wrote:
>
> Rankest beginner here.  Trying to learn Go by converting an old Visual 
> Basic application to Go (yeah, right) on Windows 10 (got all the database 
> stuff working with both postgre and sqlite!)  The application needs to read 
> an .ini file to get path/filename.  It bombs on the first line.
>
> This is from my testing platform.  I like doing things in baby steps, 
> please.
>
> package main
>
> import (
> "fmt"
>
> ini "github.com/vaughan0/go-ini"
> )
>
> func main() {
> pathfilename := readINIfile()
> fmt.Println(pathfilename)
> }
>
> func readINIfile() string {
> _, err := ini.LoadFile("C:\\temp\\testfile.ini")
> if err != nil {
> fmt.Println(err)
> }
>        return ""
> }
>
> I can't get beyond the first err test.  The error returned is: "invalid 
> INI syntax on line 1: ;blah".  It is choking on the ';blah'.  Also chokes 
> on a blank line and on simply the ';' character.  The author's 
> documentation says:
>
> INI files are parsed by go-ini line-by-line. Each line may be one of the 
> following:
>
>    - A section definition: [section-name]
>    - A property: key = value
>    - A comment: #blahblah *or* ;blahblah
>    - Blank. The line will be ignored.
>
> I've stared at this for hours.  Any idea what I'm missing?
>
>

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