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authorWim <wim@42.be>2018-08-06 21:47:05 +0200
committerWim <wim@42.be>2018-08-06 21:47:05 +0200
commit51062863a5c34d81e296cf15c61140911037cf3b (patch)
tree9b5e044672486326c7a0ca8fb26430f37bf4d83c /vendor/github.com/paulrosania/go-charset/charset/iconv/iconv.go
parent4fb4b7aa6c02a54db8ad8dd98e4d321396926c0d (diff)
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Use mod vendor for vendored directory (backwards compatible)
Diffstat (limited to 'vendor/github.com/paulrosania/go-charset/charset/iconv/iconv.go')
-rw-r--r--vendor/github.com/paulrosania/go-charset/charset/iconv/iconv.go184
1 files changed, 0 insertions, 184 deletions
diff --git a/vendor/github.com/paulrosania/go-charset/charset/iconv/iconv.go b/vendor/github.com/paulrosania/go-charset/charset/iconv/iconv.go
deleted file mode 100644
index f7187f5f..00000000
--- a/vendor/github.com/paulrosania/go-charset/charset/iconv/iconv.go
+++ /dev/null
@@ -1,184 +0,0 @@
-// The iconv package provides an interface to the GNU iconv character set
-// conversion library (see http://www.gnu.org/software/libiconv/).
-// It automatically registers all the character sets with the charset package,
-// so it is usually used simply for the side effects of importing it.
-// Example:
-// import (
-// "go-charset.googlecode.com/hg/charset"
-// _ "go-charset.googlecode.com/hg/charset/iconv"
-// )
-package iconv
-
-//#cgo darwin LDFLAGS: -liconv
-//#include <stdlib.h>
-//#include <iconv.h>
-//#include <errno.h>
-//iconv_t iconv_open_error = (iconv_t)-1;
-//size_t iconv_error = (size_t)-1;
-import "C"
-import (
- "errors"
- "fmt"
- "github.com/paulrosania/go-charset/charset"
- "runtime"
- "strings"
- "syscall"
- "unicode/utf8"
- "unsafe"
-)
-
-type iconvTranslator struct {
- cd C.iconv_t
- invalid rune
- scratch []byte
-}
-
-func canonicalChar(c rune) rune {
- if c >= 'a' && c <= 'z' {
- return c - 'a' + 'A'
- }
- return c
-}
-
-func canonicalName(s string) string {
- return strings.Map(canonicalChar, s)
-}
-
-func init() {
- charset.Register(iconvFactory{})
-}
-
-type iconvFactory struct {
-}
-
-func (iconvFactory) TranslatorFrom(name string) (charset.Translator, error) {
- return Translator("UTF-8", name, utf8.RuneError)
-}
-
-func (iconvFactory) TranslatorTo(name string) (charset.Translator, error) {
- // BUG This is wrong. The target character set may not be ASCII
- // compatible. There's no easy solution to this other than
- // removing the offending code point.
- return Translator(name, "UTF-8", '?')
-}
-
-// Translator returns a Translator that translates between
-// the named character sets. When an invalid multibyte
-// character is found, the bytes in invalid are substituted instead.
-func Translator(toCharset, fromCharset string, invalid rune) (charset.Translator, error) {
- cto, cfrom := C.CString(toCharset), C.CString(fromCharset)
- cd, err := C.iconv_open(cto, cfrom)
-
- C.free(unsafe.Pointer(cfrom))
- C.free(unsafe.Pointer(cto))
-
- if cd == C.iconv_open_error {
- if err == syscall.EINVAL {
- return nil, errors.New("iconv: conversion not supported")
- }
- return nil, err
- }
- t := &iconvTranslator{cd: cd, invalid: invalid}
- runtime.SetFinalizer(t, func(*iconvTranslator) {
- C.iconv_close(cd)
- })
- return t, nil
-}
-
-func (iconvFactory) Names() []string {
- all := aliases()
- names := make([]string, 0, len(all))
- for name, aliases := range all {
- if aliases[0] == name {
- names = append(names, name)
- }
- }
- return names
-}
-
-func (iconvFactory) Info(name string) *charset.Charset {
- name = strings.ToLower(name)
- all := aliases()
- a, ok := all[name]
- if !ok {
- return nil
- }
- return &charset.Charset{
- Name: name,
- Aliases: a,
- }
-}
-
-func (p *iconvTranslator) Translate(data []byte, eof bool) (rn int, rd []byte, rerr error) {
- n := 0
- p.scratch = p.scratch[:0]
- for len(data) > 0 {
- p.scratch = ensureCap(p.scratch, len(p.scratch)+len(data)*utf8.UTFMax)
- cData := (*C.char)(unsafe.Pointer(&data[:1][0]))
- nData := C.size_t(len(data))
-
- ns := len(p.scratch)
- cScratch := (*C.char)(unsafe.Pointer(&p.scratch[ns : ns+1][0]))
- nScratch := C.size_t(cap(p.scratch) - ns)
- r, err := C.iconv(p.cd, &cData, &nData, &cScratch, &nScratch)
-
- p.scratch = p.scratch[0 : cap(p.scratch)-int(nScratch)]
- n += len(data) - int(nData)
- data = data[len(data)-int(nData):]
-
- if r != C.iconv_error || err == nil {
- return n, p.scratch, nil
- }
- switch err := err.(syscall.Errno); err {
- case C.EILSEQ:
- // invalid multibyte sequence - skip one byte and continue
- p.scratch = appendRune(p.scratch, p.invalid)
- n++
- data = data[1:]
- case C.EINVAL:
- // incomplete multibyte sequence
- return n, p.scratch, nil
- case C.E2BIG:
- // output buffer not large enough; try again with larger buffer.
- p.scratch = ensureCap(p.scratch, cap(p.scratch)+utf8.UTFMax)
- default:
- panic(fmt.Sprintf("unexpected error code: %v", err))
- }
- }
- return n, p.scratch, nil
-}
-
-// ensureCap returns s with a capacity of at least n bytes.
-// If cap(s) < n, then it returns a new copy of s with the
-// required capacity.
-func ensureCap(s []byte, n int) []byte {
- if n <= cap(s) {
- return s
- }
- // logic adapted from appendslice1 in runtime
- m := cap(s)
- if m == 0 {
- m = n
- } else {
- for {
- if m < 1024 {
- m += m
- } else {
- m += m / 4
- }
- if m >= n {
- break
- }
- }
- }
- t := make([]byte, len(s), m)
- copy(t, s)
- return t
-}
-
-func appendRune(buf []byte, r rune) []byte {
- n := len(buf)
- buf = ensureCap(buf, n+utf8.UTFMax)
- nu := utf8.EncodeRune(buf[n:n+utf8.UTFMax], r)
- return buf[0 : n+nu]
-}