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/* Copyright (C) 2000-2002, 2004-2005 Free Software Foundation, Inc.
This file is part of the GNU LIBICONV Library.
The GNU LIBICONV 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 LIBICONV 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 LIBICONV Library; see the file COPYING.LIB.
If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
Fifth Floor, Boston, MA 02110-1301, USA. */
/* Create a table from CHARSET to Unicode. */
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <iconv-internal/iconv.h>
#ifdef __riscos__
#define ALIASES_FILE "Files.Aliases"
#else
#define ALIASES_FILE "Files/Aliases"
#endif
/* If nonzero, ignore conversions outside Unicode plane 0. */
static int bmp_only;
static const char* hexbuf (unsigned char buf[], unsigned int buflen)
{
static char msg[50];
switch (buflen) {
case 1: sprintf(msg,"0x%02X",buf[0]); break;
case 2: sprintf(msg,"0x%02X%02X",buf[0],buf[1]); break;
case 3: sprintf(msg,"0x%02X%02X%02X",buf[0],buf[1],buf[2]); break;
case 4: sprintf(msg,"0x%02X%02X%02X%02X",buf[0],buf[1],buf[2],buf[3]); break;
default: abort();
}
return msg;
}
static int try (iconv_t cd, unsigned char buf[], unsigned int buflen, unsigned int* out)
{
const char* inbuf = (const char*) buf;
size_t inbytesleft = buflen;
char* outbuf = (char*) out;
size_t outbytesleft = 3*sizeof(unsigned int);
size_t result;
iconv(cd,NULL,NULL,NULL,NULL);
result = iconv(cd,(char**)&inbuf,&inbytesleft,&outbuf,&outbytesleft);
if (result != (size_t)(-1))
result = iconv(cd,NULL,NULL,&outbuf,&outbytesleft);
if (result == (size_t)(-1)) {
if (errno == EILSEQ) {
return -1;
} else if (errno == EINVAL) {
return 0;
} else {
int saved_errno = errno;
fprintf(stderr,"%s: iconv error: ",hexbuf(buf,buflen));
errno = saved_errno;
perror("");
exit(1);
}
} else if (result > 0) /* ignore conversions with transliteration */ {
return -1;
} else {
if (inbytesleft != 0) {
fprintf(stderr,"%s: inbytes = %ld, outbytes = %ld\n",hexbuf(buf,buflen),(long)(buflen-inbytesleft),(long)(3*sizeof(unsigned int)-outbytesleft));
exit(1);
}
return (3*sizeof(unsigned int)-outbytesleft)/sizeof(unsigned int);
}
}
/* Returns the out[] buffer as a Unicode value, formatted as 0x%04X. */
static const char* ucs4_decode (const unsigned int* out, unsigned int outlen)
{
static char hexbuf[21];
char* p = hexbuf;
while (outlen > 0) {
if (p > hexbuf)
*p++ = ' ';
sprintf (p, "0x%04X", out[0]);
out += 1; outlen -= 1;
if (bmp_only && strlen(p) > 6)
return NULL;
p += strlen(p);
}
return hexbuf;
}
int main (int argc, char* argv[])
{
const char* charset;
iconv_t cd;
int search_depth;
const char *ucpath;
int alen;
char aliases[4096];
if (argc != 2) {
fprintf(stderr,"Usage: table-from charset\n");
exit(1);
}
charset = argv[1];
/* ensure the !Unicode resource exists */
#ifdef __riscos__
ucpath = "Unicode:");
#else
ucpath = getenv("UNICODE_DIR");
#endif
if (ucpath == NULL) {
fprintf(stderr, "Unicode resource not found\n");
exit(1);
}
strncpy(aliases, ucpath, sizeof(aliases));
alen = strlen(ucpath);
#ifndef __riscos__
if (aliases[alen - 1] != '/') {
strncat(aliases, "/", sizeof(aliases) - alen - 1);
alen += 1;
}
#endif
strncat(aliases, ALIASES_FILE, sizeof(aliases) - alen - 1);
aliases[sizeof(aliases) - 1] = '\0';
if (iconv_initialise(aliases) == 0) {
fprintf(stderr, "Failed initialising iconv library\n");
exit(1);
}
cd = iconv_open("UCS-4-INTERNAL",charset);
if (cd == (iconv_t)(-1)) {
perror("iconv_open");
exit(1);
}
/* When testing UTF-8, stop at 0x10000, otherwise the output file gets too
big. */
bmp_only = (strcmp(charset,"UTF-8") == 0);
search_depth = (strcmp(charset,"UTF-8") == 0 ? 3 : 4);
{
unsigned int out[3];
unsigned char buf[4];
unsigned int i0, i1, i2, i3;
int result;
for (i0 = 0; i0 < 0x100; i0++) {
buf[0] = i0;
result = try(cd,buf,1,out);
if (result < 0) {
} else if (result > 0) {
const char* unicode = ucs4_decode(out,result);
if (unicode != NULL)
printf("0x%02X\t%s\n",i0,unicode);
} else {
for (i1 = 0; i1 < 0x100; i1++) {
buf[1] = i1;
result = try(cd,buf,2,out);
if (result < 0) {
} else if (result > 0) {
const char* unicode = ucs4_decode(out,result);
if (unicode != NULL)
printf("0x%02X%02X\t%s\n",i0,i1,unicode);
} else {
for (i2 = 0; i2 < 0x100; i2++) {
buf[2] = i2;
result = try(cd,buf,3,out);
if (result < 0) {
} else if (result > 0) {
const char* unicode = ucs4_decode(out,result);
if (unicode != NULL)
printf("0x%02X%02X%02X\t%s\n",i0,i1,i2,unicode);
} else if (search_depth > 3) {
for (i3 = 0; i3 < 0x100; i3++) {
buf[3] = i3;
result = try(cd,buf,4,out);
if (result < 0) {
} else if (result > 0) {
const char* unicode = ucs4_decode(out,result);
if (unicode != NULL)
printf("0x%02X%02X%02X%02X\t%s\n",i0,i1,i2,i3,unicode);
} else {
fprintf(stderr,"%s: incomplete byte sequence\n",hexbuf(buf,4));
exit(1);
}
}
}
}
}
}
}
}
}
if (iconv_close(cd) < 0) {
perror("iconv_close");
exit(1);
}
iconv_finalise();
if (ferror(stdin) || ferror(stdout) || fclose(stdout)) {
fprintf(stderr,"I/O error\n");
exit(1);
}
exit(0);
}
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