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122 lines
3.6 KiB
C
122 lines
3.6 KiB
C
--- texk/xdvik/encodings.c.orig 2019-07-27 23:56:42 UTC
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+++ texk/xdvik/encodings.c
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@@ -69,10 +69,18 @@ OTHER DEALINGS IN THE SOFTWARE.
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#if HAVE_ICONV_H
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# include <iconv.h>
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static iconv_t m_iconv_gb_ucs4 = (iconv_t)(-1);
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+static iconv_t m_iconv_jis_ucs4 = (iconv_t)(-1);
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#endif /* HAVE_ICONV_H */
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#include <ctype.h>
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+#ifdef PTEX
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+#include "ptexmap.h"
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+#if HAVE_PTEXENC
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+#include <ptexenc/unicode-jp.h>
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+#include <ptexenc/ptexenc.h>
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+#endif
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+#endif
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#include "util.h"
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#include "encodings.h"
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#include "my-snprintf.h"
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@@ -3021,9 +3029,75 @@ close_iconv(void *dummy)
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iconv_close(m_iconv_gb_ucs4);
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m_iconv_gb_ucs4 = (iconv_t)(-1);
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}
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+ if (m_iconv_jis_ucs4 != (iconv_t)(-1)) {
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+ iconv_close(m_iconv_jis_ucs4);
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+ m_iconv_jis_ucs4 = (iconv_t)(-1);
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+ }
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}
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#endif /* HAVE_ICONV_H */
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+#ifdef PTEX
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+/* convert a JIS char to unicode (UCS-4) using iconv() */
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+uint32_t
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+jis2unicode(wide_ubyte jis)
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+{
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+#if HAVE_ICONV_H
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+ uint32_t u = 0;
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+ unsigned char jis_seq[8] = {
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+ 0x1b, 0x24, 0x42, /* JIS X 0208-1983 */
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+ (unsigned char)(jis >> 8), (unsigned char)jis,
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+ 0x1b, 0x28, 0x42, /* ASCII */
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+ };
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+ unsigned char unicode[4];
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+ size_t from = sizeof jis_seq;
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+ size_t to = sizeof unicode;
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+ static Boolean initialized = False;
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+ char *from_ptr = (char *)jis_seq;
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+ char *to_ptr = (char *)unicode;
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+
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+ if (m_iconv_jis_ucs4 == (iconv_t)(-1)) {
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+ if (initialized)
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+ return 0;
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+ initialized = True;
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+ m_iconv_jis_ucs4 = iconv_open(
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+#ifdef WORDS_BIGENDIAN
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+ "UCS-4BE",
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+#else
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+ "UCS-4LE",
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+#endif
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+ "ISO-2022-JP");
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+ if (m_iconv_jis_ucs4 == (iconv_t)(-1)) {
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+ XDVI_ERROR((stderr, "jis2unicode: iconv_open() failed: %s", strerror(errno)));
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+ return 0;
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+ }
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+ }
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+ if (iconv(m_iconv_jis_ucs4, (iconv_char_pptrT)&from_ptr, &from, &to_ptr, &to) == (size_t)(-1)) {
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+ XDVI_ERROR((stderr, "jis2unicode: can't convert JIS to unicode: %s", strerror(errno)));
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+ return 0;
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+ }
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+ memcpy(&u, unicode, sizeof unicode);
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+ return u;
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+#elif HAVE_PTEXENC
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+ uint32_t u = 0;
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+ u = JIStoUCS2(jis);
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+ if (u == 0) {
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+ XDVI_ERROR((stderr, "jis2unicode: can't convert JIS (%04x) to unicode in ptexenc library", jis));
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+ }
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+ return u;
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+#else /* !HAVE_ICONV_H && !HAVE_PTEXENC */
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+ static Boolean warned = False;
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+
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+ if (!warned) {
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+ popup_message(globals.widgets.top_level,
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+ MSG_WARN, NULL, "This version of xdvi has been compiled without iconv support - "
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+ "cannot convert Kanji character to UTF-8");
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+ warned = True;
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+ }
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+ return 0;
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+ #endif /* HAVE_ICONV_H */
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+ }
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+#endif /* PTEX */
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+
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/* convert a CJK char to unicode (UCS-4) using iconv() */
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static uint32_t
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cjk2unicode(unsigned char *cjk)
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@@ -3577,6 +3651,24 @@ guess_encoding(wide_ubyte ch, const char *fontname, ch
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TRACE_FIND_VERBOSE((stderr, "guess_encoding: |%s|, char 0x%.4X", fontname, ch));
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+#ifdef PTEX
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+ if (iskanjifont(fontname)) {
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+ struct ptexmap *map = getkanjifont(fontname);
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+ switch (map->encoding) {
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+ case ENC_JIS_H:
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+ case ENC_JIS_V:
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+ TRACE_FIND_VERBOSE((stderr, "guess_encoding: Kanji fonts (JIS encoding)"));
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+ return jis2unicode(ch);
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+ case ENC_UNICODE_H:
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+ case ENC_UNICODE_V:
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+ TRACE_FIND_VERBOSE((stderr, "guess_encoding: Kanji fonts (Unicode encoding)"));
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+ return ch;
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+ default:
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+ TRACE_FIND_VERBOSE((stderr, "guess_encoding: Kanji fonts (Unsupported encoding)"));
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+ return '?';
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+ }
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+ }
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+#endif /* PTEX */
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/* our encoding vectors only have size 256 */
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if (ch > 255) {
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XDVI_WARNING((stderr, "guess_encoding: font index %lu too large", (unsigned long)ch));
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