Re: [PATCH v6 2/4] curses: Fixes compiler error that complain don't have langinfo.h on msys2/mingw

["Daniel P. Berrangé" <berrange@redhat.com>]

On Fri, Oct 02, 2020 at 01:32:28AM +0800, Yonggang Luo wrote:
> msys2/mingw lacks the POSIX-required langinfo.h.
> 
> gcc test.c -DNCURSES_WIDECHAR -I/mingw64/include/ncursesw -pipe -lncursesw -lgnurx -ltre -lintl -liconv
> test.c:4:10: fatal error: langinfo.h: No such file or directory
>     4 | #include <langinfo.h>
>       |          ^~~~~~~~~~~~
> compilation terminated.
> 
> So we using g_get_codeset instead of nl_langinfo(CODESET)
> 
> Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
>  ui/curses.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/ui/curses.c b/ui/curses.c
> index a59b23a9cf..12bc682cf9 100644
> --- a/ui/curses.c
> +++ b/ui/curses.c
> @@ -30,7 +30,6 @@
>  #endif
>  #include <locale.h>
>  #include <wchar.h>
> -#include <langinfo.h>
>  #include <iconv.h>
>  
>  #include "qapi/error.h"
> @@ -526,6 +525,7 @@ static void font_setup(void)
>      iconv_t nativecharset_to_ucs2;
>      iconv_t font_conv;
>      int i;
> +    g_autofree gchar *local_codeset = g_get_codeset();
>  
>      /*
>       * Control characters are normally non-printable, but VGA does have
> @@ -566,14 +566,14 @@ static void font_setup(void)
>        0x25bc
>      };
>  
> -    ucs2_to_nativecharset = iconv_open(nl_langinfo(CODESET), "UCS-2");
> +    ucs2_to_nativecharset = iconv_open(local_codeset, "UCS-2");
>      if (ucs2_to_nativecharset == (iconv_t) -1) {
>          fprintf(stderr, "Could not convert font glyphs from UCS-2: '%s'\n",
>                          strerror(errno));
>          exit(1);
>      }
>  
> -    nativecharset_to_ucs2 = iconv_open("UCS-2", nl_langinfo(CODESET));
> +    nativecharset_to_ucs2 = iconv_open("UCS-2", local_codeset);
>      if (nativecharset_to_ucs2 == (iconv_t) -1) {
>          iconv_close(ucs2_to_nativecharset);
>          fprintf(stderr, "Could not convert font glyphs to UCS-2: '%s'\n",
> @@ -581,7 +581,7 @@ static void font_setup(void)
>          exit(1);
>      }
>  
> -    font_conv = iconv_open(nl_langinfo(CODESET), font_charset);
> +    font_conv = iconv_open(local_codeset, font_charset);
>      if (font_conv == (iconv_t) -1) {
>          iconv_close(ucs2_to_nativecharset);
>          iconv_close(nativecharset_to_ucs2);
> @@ -602,7 +602,7 @@ static void font_setup(void)
>      /* DEL */
>      convert_ucs(0x7F, 0x2302, ucs2_to_nativecharset);
>  
> -    if (strcmp(nl_langinfo(CODESET), "UTF-8")) {
> +    if (strcmp(local_codeset, "UTF-8")) {

If you're removing use of nl_langinfo / langinfo.h then you need
to also update configure, because it is checking for this function
and header file when validating curses library support.


Regards,
Daniel
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