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-rw-r--r--locale/programs/stringtrans.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/locale/programs/stringtrans.c b/locale/programs/stringtrans.c
new file mode 100644
index 0000000000..bff5aa41a2
--- /dev/null
+++ b/locale/programs/stringtrans.c
@@ -0,0 +1,146 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+COntributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <assert.h>
+#include <stdlib.h>
+
+#include "charset.h"
+#include "stringtrans.h"
+
+
+/* Global variable. */
+enum encoding_method encoding_method = ENC_UCS4;
+
+
+void *xmalloc (size_t __n);
+void *xrealloc (void *__p, size_t __n);
+
+
+#define ADDC(ch) \
+ do \
+ { \
+ if (bufact == bufmax) \
+ { \
+ bufmax *= 2; \
+ buf = xrealloc (buf, bufmax); \
+ } \
+ buf[bufact++] = (ch); \
+ } \
+ while (0)
+
+
+char *
+translate_string (char *str, struct charset_t *charset)
+{
+ char *buf;
+ size_t bufact = 0;
+ size_t bufmax = 56;
+
+ buf = (char *) xmalloc (bufmax);
+
+ while (str[0] != '\0')
+ {
+ char *tp;
+ unsigned int value;
+
+ if (str[0] != '<')
+ {
+ ADDC (*str++);
+ continue;
+ }
+
+ tp = &str[1];
+ while (tp[0] != '\0' && tp[0] != '>')
+ if (tp[0] == '\\')
+ if (tp[1] != '\0')
+ tp += 2;
+ else
+ ++tp;
+ else
+ ++tp;
+
+ if (tp[0] == '\0')
+ {
+ free (buf);
+ return NULL;
+ }
+
+ value = charset_find_value (charset, str + 1, tp - (str + 1));
+ if (value == ILLEGAL_CHAR_VALUE)
+ {
+ free (buf);
+ return NULL;
+ }
+ else
+ {
+ /* Encode string using current method. */
+ char *cp;
+
+ if (bufmax - bufact < 8)
+ {
+ bufmax *= 2;
+ buf = (char *) xrealloc (buf, bufmax);
+ }
+
+ cp = &buf[bufact];
+ if (encode_char (value, &cp) < 0)
+ {
+ free (buf);
+ return NULL;
+ }
+ bufact = cp - buf;
+ }
+
+ str = &tp[1];
+ }
+
+ ADDC ('\0');
+
+ return buf;;
+}
+
+
+int
+encode_char (unsigned int value, char **cpp)
+{
+ switch (encoding_method)
+ {
+ case ENC_UCS1:
+ if (value > 255)
+ return -11;
+ *(*cpp)++ = (char) value;
+ break;
+
+ case ENC_UCS4:
+ *(*cpp)++ = (char) (value >> 24);
+ *(*cpp)++ = (char) ((value >> 16) & 0xff);
+ *(*cpp)++ = (char) ((value >> 8) & 0xff);
+ *(*cpp)++ = (char) (value & 0xff);
+ break;
+
+ default:
+ return -1;
+ }
+
+ return 0;
+}