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author | Thomas Voss <mail@thomasvoss.com> | 2025-06-06 01:32:41 +0200 |
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committer | Thomas Voss <mail@thomasvoss.com> | 2025-06-06 01:32:41 +0200 |
commit | 2c726e551d90d20bcd2d78545c369864cc9038e5 (patch) | |
tree | 520615a33c966c729e70e549e859a2c01dc4ba40 /cmd/mfmt/main.go | |
parent | 9379ea42a9b0afd1abf705bf3300f03d8bbe79f9 (diff) |
Use CSV’s for mintages
Diffstat (limited to 'cmd/mfmt/main.go')
-rw-r--r-- | cmd/mfmt/main.go | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/cmd/mfmt/main.go b/cmd/mfmt/main.go deleted file mode 100644 index c4e2277..0000000 --- a/cmd/mfmt/main.go +++ /dev/null @@ -1,189 +0,0 @@ -/* Simple formatter for mintage files. This is not perfect and doesn’t - check for syntactic correctness, it’s just to get stuff aligned - nicely. Maybe in the future I will construct a military-grade - formatter. */ - -package main - -import ( - "bufio" - "bytes" - "fmt" - "io" - "os" - "path/filepath" - "regexp" - "strings" -) - -const ws = " \t" - -var ( - rv int - - reMintageYear = regexp.MustCompile(`^\d{4}(-[^ \t]+)?`) - reMintageRowC = regexp.MustCompile(`^[ \t]*(([0-9.]+|\?)[ \t]+){2}([0-9.]+|\?)$`) - reMintageRowS = regexp.MustCompile(`^[ \t]*(([0-9.]+|\?)[ \t]+){7}([0-9.]+|\?)$`) -) - -func main() { - if len(os.Args) == 1 { - mfmt("-", os.Stdin, os.Stdout) - } - for _, arg := range os.Args[1:] { - f, err := os.OpenFile(arg, os.O_RDWR, 0) - if err != nil { - warn(err) - continue - } - defer f.Close() - - buf := bytes.NewBuffer(make([]byte, 0, 8192)) - mfmt(arg, f, buf) - - if _, err = f.Seek(0, io.SeekStart); err != nil { - warn(err) - continue - } - - if _, err = f.Write(buf.Bytes()); err != nil { - warn(err) - continue - } - - if err = f.Truncate(int64(buf.Len())); err != nil { - warn(err) - } - } - os.Exit(rv) -} - -func mfmt(file string, r io.Reader, w io.Writer) { - var ( - buf [3]string - bufsz int - longestNums [8]int - ) - - scanner := bufio.NewScanner(r) - for linenr := 1; scanner.Scan(); linenr++ { - line := strings.Trim(scanner.Text(), ws) - - switch { - case len(line) == 0, line[0] == '#': - fmt.Fprintln(w, line) - case reMintageRowS.MatchString(line): - switch bufsz { - case len(buf): - bufsz = 0 - clear(longestNums[:]) - fallthrough - default: - setLongestNum(longestNums[:], line) - buf[bufsz] = line - if bufsz++; bufsz == len(buf) { - fmtMintageRow(buf[0], longestNums[:], w) - fmtMintageRow(buf[1], longestNums[:], w) - fmtMintageRow(buf[2], longestNums[:], w) - } - } - case reMintageRowC.MatchString(line): - var ns [3]int - setLongestNum(ns[:], line) - fmtMintageRow(line, ns[:], w) - case reMintageYear.MatchString(line): - fmtMintageYear(line, w) - default: - warn(fmt.Sprintf("%s:%d: potential syntax error", file, linenr)) - fmt.Fprintln(w, line) - } - } -} - -func setLongestNum(longest []int, line string) { - for i, x := range strings.FieldsFunc(line, func(r rune) bool { - return strings.ContainsRune(ws, r) - }) { - n := len(strings.ReplaceAll(x, ".", "")) - n += (n - 1) / 3 // Thousands separators - longest[i] = max(longest[i], n) - } -} - -func fmtMintageYear(line string, w io.Writer) { - switch i := strings.IndexAny(line, ws); i { - case -1: - fmt.Fprintln(w, line) - default: - fmt.Fprintf(w, "%s %s\n", line[:i], strings.TrimLeft(line[i:], ws)) - } -} - -func fmtMintageRow(line string, longest []int, w io.Writer) { - tokens := strings.FieldsFunc(line, func(r rune) bool { - return strings.ContainsRune(ws, r) - }) - - for i, tok := range tokens { - s := formatMintage(tok) - - if i == 0 { - fmt.Fprintf(w, "\t%*s", longest[i], s) - } else { - fmt.Fprintf(w, "%*s", longest[i]+1, s) - } - } - - fmt.Fprintln(w) -} - -func formatMintage(s string) string { - if s == "?" { - return s - } - - n := atoiWithDots(s) - digits := intlen(n) - dots := (digits - 1) / 3 - out := make([]byte, digits+dots) - - for i, j := len(out)-1, 0; ; i-- { - out[i] = byte(n%10) + 48 - if n /= 10; n == 0 { - return string(out) - } - if j++; j == 3 { - i, j = i-1, 0 - out[i] = '.' - } - } -} - -func intlen(v int) int { - switch { - case v == 0: - return 1 - default: - n := 0 - for x := v; x != 0; x /= 10 { - n++ - } - return n - } -} - -func atoiWithDots(s string) int { - n := 0 - for _, ch := range s { - if ch == '.' { - continue - } - n = n*10 + int(ch) - '0' - } - return n -} - -func warn(e any) { - fmt.Fprintf(os.Stderr, "%s: %s\n", filepath.Base(os.Args[0]), e) - rv = 1 -} |