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* Copyright 2002, 2003, 2004, 2005 by Paul Mattes.
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation.
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* x3270 is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the file LICENSE for more details.
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* A 3270 Terminal Emulator for X11
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* Wide character translation functions.
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#if !defined(PR3287) /*[*/
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#include "trace_dsc.h"
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#if !defined(PR3287) /*[*/
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#define ICU_DATA "ICU_DATA"
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char *local_encoding = CN;
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static UConverter *dbcs_converter = NULL;
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static char *dbcs_converter_name = CN;
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static UConverter *sbcs_converter = NULL;
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static char *sbcs_converter_name = CN;
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static UConverter *local_converter = NULL;
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#if defined(X3270_DISPLAY) /*[*/
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static UConverter *wdisplay_converter = NULL;
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static Boolean same_converter = False;
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/* Initialize, or reinitialize the EBCDIC DBCS converters. */
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wide_init(char *converter_names, char *local_name)
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UErrorCode err = U_ZERO_ERROR;
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Boolean lib_ok = False;
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Boolean dot_ok = False;
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char *cn_copy, *buf, *token;
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char *sbcs_converters = NULL;
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char *dbcs_converters = NULL;
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int n_converter_sets = 0;
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int n_sbcs_converters = 0;
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int n_dbcs_converters = 0;
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/* This may be a reinit. */
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if (local_converter != NULL) {
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ucnv_close(local_converter);
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local_converter = NULL;
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Replace(local_encoding, CN);
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if (sbcs_converter != NULL) {
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ucnv_close(sbcs_converter);
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sbcs_converter = NULL;
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Replace(sbcs_converter_name, CN);
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if (dbcs_converter != NULL) {
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ucnv_close(dbcs_converter);
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dbcs_converter = NULL;
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Replace(dbcs_converter_name, CN);
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#if defined(X3270_DISPLAY) /*[*/
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if (wdisplay_converter != NULL) {
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ucnv_close(wdisplay_converter);
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wdisplay_converter = NULL;
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same_converter = False;
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/* Make sure that $ICU_DATA has LIBX3270DIR and . in it. */
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cur_path = getenv(ICU_DATA);
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char *t = NewString(cur_path);
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while (!(lib_ok && dot_ok) &&
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(token = strtok(buf, ":")) != CN) {
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if (!strcmp(token, LIBX3270DIR)) {
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} else if (!strcmp(token, ".")) {
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if (!lib_ok || !dot_ok) {
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s = new_path = Malloc(strlen(ICU_DATA) +
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(cur_path? strlen(cur_path): 0) +
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strlen(LIBX3270DIR) + 5 /* ICU_DATA=*:*:.\n */);
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s += sprintf(s, "%s=", ICU_DATA);
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s += sprintf(s, "%s", cur_path);
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if (s[-1] != '=' && s[-1] != ':')
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s += sprintf(s, "%s", LIBX3270DIR);
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if (s[-1] != '=' && s[-1] != ':')
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if (putenv(new_path) < 0) {
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popup_an_errno(errno, "putenv for " ICU_DATA " failed");
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/* Decode local converter name. */
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if (local_name == CN) {
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(void) setlocale(LC_CTYPE, "");
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local_name = nl_langinfo(CODESET);
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if (local_name != CN) {
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local_converter = ucnv_open(local_name, &err);
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if (local_converter == NULL) {
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popup_an_error("Cannot find ICU converter for "
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"local encoding:\n%s",
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Replace(local_encoding, NewString(local_name));
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/* Decode host and display converter names. */
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if (converter_names == CN)
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* Split into SBCS and DBCS converters, separated by '+'. If only one
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* converter is specified, it's the DBCS converter.
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n_converter_sets = 0;
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buf = cn_copy = NewString(converter_names);
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while ((token = strtok(buf, "+")) != CN) {
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switch (n_converter_sets) {
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case 0: /* DBCS or SBCS */
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dbcs_converters = token;
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sbcs_converters = dbcs_converters;
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dbcs_converters = token;
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popup_an_error("Extra converter set '%s' ignored", token);
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if (sbcs_converters != NULL) {
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n_sbcs_converters = 0;
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buf = sbcs_converters;
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while ((token = strtok(buf, ",")) != CN) {
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switch (n_sbcs_converters) {
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sbcs_converter = ucnv_open(token, &err);
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if (sbcs_converter == NULL) {
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popup_an_error("Cannot find ICU converter "
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"for host SBCS:\n%s", token);
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Replace(sbcs_converter_name, NewString(token));
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popup_an_error("Extra converter name '%s' ignored",
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if (dbcs_converters != NULL) {
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n_dbcs_converters = 0;
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buf = dbcs_converters;
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while ((token = strtok(buf, ",")) != CN) {
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switch (n_dbcs_converters) {
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dbcs_converter = ucnv_open(token, &err);
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if (dbcs_converter == NULL) {
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popup_an_error("Cannot find ICU converter "
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"for host DBCS:\n%s", token);
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Replace(dbcs_converter_name, NewString(token));
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case 1: /* display */
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#if defined(X3270_DISPLAY) /*[*/
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wdisplay_converter = ucnv_open(token, &err);
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if (wdisplay_converter == NULL) {
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popup_an_error("Cannot find ICU converter "
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"for display DBCS:\n%s", token);
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popup_an_error("Extra converter name '%s' ignored",
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if (n_dbcs_converters < 2) {
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popup_an_error("Missing DBCS converter value");
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if (dbcs_converter_name != CN &&
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sbcs_converter_name != CN &&
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!strcmp(dbcs_converter_name, sbcs_converter_name)) {
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same_converter = True;
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xlate1(unsigned char from0, unsigned char from1, unsigned char to_buf[],
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UConverter *from_cnv, const char *from_name,
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UConverter *to_cnv, const char *to_name)
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UErrorCode err = U_ZERO_ERROR;
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#if defined(WIDE_DEBUG) /*[*/
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/* Do something reasonable in case of failure. */
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to_buf[0] = to_buf[1] = 0;
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/* Convert string from source to Unicode. */
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if (same_converter) {
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from_buf[0] = EBC_so;
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from_buf[3] = EBC_si;
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len = ucnv_toUChars(from_cnv, Ubuf, 2, from_buf, from_len, &err);
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if (err != U_ZERO_ERROR) {
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trace_ds("[%s toUnicode of DBCS X'%02x%02x' failed, ICU "
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"error %d]\n", from_name, from0, from1, (int)err);
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if (Ubuf[0] == 0xfffd) {
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/* No translation. */
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trace_ds("[%s toUnicode of DBCS X'%02x%02x' failed]\n",
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from_name, from0, from1);
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#if defined(WIDE_DEBUG) /*[*/
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printf("Got Unicode %x\n", Ubuf[0]);
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if (to_cnv != NULL) {
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/* Convert string from Unicode to Destination. */
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len = ucnv_fromUChars(to_cnv, tmp_to_buf, 3, Ubuf, len, &err);
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if (err != U_ZERO_ERROR) {
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trace_ds("[fromUnicode of U+%04x to %s failed, ICU "
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"error %d]\n", Ubuf[0], to_name, (int)err);
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to_buf[0] = tmp_to_buf[0];
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to_buf[1] = tmp_to_buf[1];
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#if defined(WIDE_DEBUG) /*[*/
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printf("Got %u %s characters:", len, to_name);
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for (i = 0; i < len; i++) {
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printf(" %02x", to_buf[i]);
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to_buf[0] = (Ubuf[0] >> 8) & 0xff;
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to_buf[1] = Ubuf[0] & 0xff;
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#if defined(X3270_DISPLAY) /*[*/
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/* Translate a DBCS EBCDIC character to a display character. */
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dbcs_to_display(unsigned char ebc1, unsigned char ebc2, unsigned char c[])
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xlate1(ebc1, ebc2, c, dbcs_converter, "host DBCS", wdisplay_converter,
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/* Translate a DBCS EBCDIC character to a 2-byte Unicode character. */
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dbcs_to_unicode16(unsigned char ebc1, unsigned char ebc2, unsigned char c[])
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xlate1(ebc1, ebc2, c, dbcs_converter, "host DBCS", NULL, NULL);
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* Translate a DBCS EBCDIC character to a local multi-byte character.
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* Returns -1 for error, or the mb length. NULL terminates.
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dbcs_to_mb(unsigned char ebc1, unsigned char ebc2, char *mb)
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UErrorCode err = U_ZERO_ERROR;
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if (local_converter == NULL) {
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/* Translate to Unicode first. */
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dbcs_to_unicode16(ebc1, ebc2, w);
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Ubuf = (w[0] << 8) | w[1];
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/* Then translate to the local encoding. */
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len = ucnv_fromUChars(local_converter, mb, 16, &Ubuf, 1, &err);
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if (err != U_ZERO_ERROR) {
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trace_ds("[fromUnicode of U+%04x to local failed, ICU "
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"error %d]\n", Ubuf, (int)err);
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* Translate an SBCS EBCDIC character to a local multi-byte character.
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* Returns -1 for error, or the mb length. NULL terminates.
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sbcs_to_mb(unsigned char ebc, char *mb)
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UErrorCode err = U_ZERO_ERROR;
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if (sbcs_converter == NULL) {
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/* No SBCS converter, do EBCDIC to latin-1. */
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if (local_converter == NULL) {
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/* No local converter either, latin-1 is it. */
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/* Have a local converter; use it below. */
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/* Have an SBCS converter. Convert from SBCS to Unicode. */
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len = ucnv_toUChars(sbcs_converter, &Ubuf, 1, (char *)&ebc, 1,
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if (err != U_ZERO_ERROR &&
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err != U_STRING_NOT_TERMINATED_WARNING) {
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trace_ds("[toUChars failed, ICU error %d]\n",
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/* Convert from Unicode to the local encoding. */
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len = ucnv_fromUChars(local_converter, mb, 16, &Ubuf, 1, &err);
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if (err != U_ZERO_ERROR) {
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trace_ds("[fromUnicode of U+%04x to local failed, ICU "
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"error %d]\n", Ubuf, (int)err);
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* Translate a local multi-byte string to Unicode characters.
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* Returns -1 for error, or the length. NULL terminates.
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mb_to_unicode(char *mb, int mblen, UChar *u, int ulen, UErrorCode *err)
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UErrorCode local_err;
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Boolean print_errs = False;
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if (local_converter == NULL) {
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for (i = 0; i < mblen; i++) {
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len = ucnv_toUChars(local_converter, u, ulen, mb, mblen, err);
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if (*err != U_ZERO_ERROR && *err != U_STRING_NOT_TERMINATED_WARNING) {
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trace_ds("[toUChars failed, ICU error %d]\n",
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* Try to map a Unicode character to the Host SBCS character set.
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* Returns ASCII in cp[0].
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dbcs_map8(UChar u, unsigned char *cp)
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UErrorCode err = U_ZERO_ERROR;
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if (sbcs_converter != NULL) {
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len = ucnv_fromUChars(sbcs_converter, (char *)cp, 1, &u, 1,
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if ((err != U_ZERO_ERROR &&
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err != U_STRING_NOT_TERMINATED_WARNING) ||
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(*cp == '?' && u != '?')) {
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* Try to map a Unicode character to the Host DBCS character set.
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* Returns EBCDIC in cp[].
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dbcs_map16(UChar u, unsigned char *cp)
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UErrorCode err = U_ZERO_ERROR;
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if (same_converter) {
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len = ucnv_fromUChars(dbcs_converter, tmp_cp, 5, &u, 1, &err);
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if (err != U_ZERO_ERROR ||
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len = ucnv_fromUChars(dbcs_converter, (char *)cp, 2, &u, 1,
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return (err == U_ZERO_ERROR ||
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err == U_STRING_NOT_TERMINATED_WARNING);
added
removed
s3270/wide.c
