ref: 75e062c7753c7dd4229f00932ffa34f87fd7fead
dir: /DoConfig/fltk/src/xutf8/lcUniConv/gbk_tab_to_h.c/
/* $XFree86: xc/lib/X11/lcUniConv/cjk_tab_to_h.c,v 1.2 2000/12/04 18:49:31 dawes Exp $ */
/* 2009-02-17 <sparkaround@gmail.com>: Create gbk_tab_to_h.c from
* cjk_tab_to_h.c to generate GBK(cp936ext) table correctly.
*
*
* Generates a CJK character set table from a .TXT table as found on
* ftp.unicode.org or in the X nls directory.
* Examples:
*
* ./gbk_tab_to_h CP936EXT cp936ext > cp936ext.h < CP936EXT.TXT
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
typedef struct {
int start;
int end;
} Block;
typedef struct {
int rows; /* number of possible values for the 1st byte */
int cols; /* number of possible values for the 2nd byte */
int (*row_byte) (int row); /* returns the 1st byte value for a given row */
int (*col_byte) (int col); /* returns the 2nd byte value for a given col */
int (*byte_row) (int byte); /* converts a 1st byte value to a row, else -1 */
int (*byte_col) (int byte); /* converts a 2nd byte value to a col, else -1 */
const char* check_row_expr; /* format string for 1st byte value checking */
const char* check_col_expr; /* format string for 2nd byte value checking */
const char* byte_row_expr; /* format string for 1st byte value to row */
const char* byte_col_expr; /* format string for 2nd byte value to col */
int** charset2uni; /* charset2uni[0..rows-1][0..cols-1] is valid */
/* You'll understand the terms "row" and "col" when you buy Ken Lunde's book.
Once a row is fixed, choosing a "col" is the same as choosing a "cell". */
int* charsetpage; /* charsetpage[0..rows]: how large is a page for a row */
int ncharsetblocks;
Block* charsetblocks; /* blocks[0..nblocks-1] */
int* uni2charset; /* uni2charset[0x0000..0xffff] */
} Encoding;
/*
* Outputs the file title.
*/
static void output_title (const char *charsetname)
{
printf("\n");
printf("/*\n");
printf(" * %s\n", charsetname);
printf(" */\n");
printf("\n");
}
/*
* Reads the charset2uni table from standard input.
*/
static void read_table (Encoding* enc)
{
int row, col, i, i1, i2, c, j;
enc->charset2uni = (int**) malloc(enc->rows*sizeof(int*));
for (row = 0; row < enc->rows; row++)
enc->charset2uni[row] = (int*) malloc(enc->cols*sizeof(int));
for (row = 0; row < enc->rows; row++)
for (col = 0; col < enc->cols; col++)
enc->charset2uni[row][col] = 0xfffd;
c = getc(stdin);
ungetc(c,stdin);
if (c == '#') {
/* Read a unicode.org style .TXT file. */
for (;;) {
c = getc(stdin);
if (c == EOF)
break;
if (c == '\n' || c == ' ' || c == '\t')
continue;
if (c == '#') {
do { c = getc(stdin); } while (!(c == EOF || c == '\n'));
continue;
}
ungetc(c,stdin);
if (scanf("0x%x", &j) != 1)
exit(1);
i1 = j >> 8;
i2 = j & 0xff;
row = enc->byte_row(i1);
col = enc->byte_col(i2);
if (row < 0 || col < 0) {
fprintf(stderr, "lost entry for %02x %02x\n", i1, i2);
exit(1);
}
if (scanf(" 0x%x", &enc->charset2uni[row][col]) != 1)
exit(1);
}
} else {
/* Read a table of hexadecimal Unicode values. */
for (i1 = 32; i1 < 132; i1++)
for (i2 = 32; i2 < 132; i2++) {
i = scanf("%x", &j);
if (i == EOF)
goto read_done;
if (i != 1)
exit(1);
if (j < 0 || j == 0xffff)
j = 0xfffd;
if (j != 0xfffd) {
if (enc->byte_row(i1) < 0 || enc->byte_col(i2) < 0) {
fprintf(stderr, "lost entry at %02x %02x\n", i1, i2);
exit (1);
}
enc->charset2uni[enc->byte_row(i1)][enc->byte_col(i2)] = j;
}
}
read_done: ;
}
}
/*
* Computes the charsetpage[0..rows] array.
*/
static void find_charset2uni_pages (Encoding* enc)
{
int row, col;
enc->charsetpage = (int*) malloc((enc->rows+1)*sizeof(int));
for (row = 0; row <= enc->rows; row++)
enc->charsetpage[row] = 0;
for (row = 0; row < enc->rows; row++) {
int used = 0;
for (col = 0; col < enc->cols; col++)
if (enc->charset2uni[row][col] != 0xfffd)
used = col+1;
enc->charsetpage[row] = used;
}
}
/*
* Fills in nblocks and blocks.
*/
static void find_charset2uni_blocks (Encoding* enc)
{
int n, row, lastrow;
enc->charsetblocks = (Block*) malloc(enc->rows*sizeof(Block));
n = 0;
for (row = 0; row < enc->rows; row++)
if (enc->charsetpage[row] > 0 && (row == 0 || enc->charsetpage[row-1] == 0)) {
for (lastrow = row; enc->charsetpage[lastrow+1] > 0; lastrow++);
enc->charsetblocks[n].start = row * enc->cols;
enc->charsetblocks[n].end = lastrow * enc->cols + enc->charsetpage[lastrow];
n++;
}
enc->ncharsetblocks = n;
}
/*
* Outputs the charset to unicode table and function.
*/
static void output_charset2uni (const char* name, Encoding* enc)
{
int row, col, lastrow, col_max, i, i1_min, i1_max;
find_charset2uni_pages(enc);
find_charset2uni_blocks(enc);
for (row = 0; row < enc->rows; row++)
if (enc->charsetpage[row] > 0) {
if (row == 0 || enc->charsetpage[row-1] == 0) {
/* Start a new block. */
for (lastrow = row; enc->charsetpage[lastrow+1] > 0; lastrow++);
printf("static const unsigned short %s_2uni_page%02x[%d] = {\n",
name, enc->row_byte(row),
(lastrow-row) * enc->cols + enc->charsetpage[lastrow]);
}
printf(" /""* 0x%02x *""/\n ", enc->row_byte(row));
col_max = (enc->charsetpage[row+1] > 0 ? enc->cols : enc->charsetpage[row]);
for (col = 0; col < col_max; col++) {
printf(" 0x%04x,", enc->charset2uni[row][col]);
if ((col % 8) == 7 && (col+1 < col_max)) printf("\n ");
}
printf("\n");
if (enc->charsetpage[row+1] == 0) {
/* End a block. */
printf("};\n");
}
}
printf("\n");
printf("static int\n");
printf("%s_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)\n", name);
printf("{\n");
printf(" unsigned char c1 = s[0];\n");
printf(" if (");
for (i = 0; i < enc->ncharsetblocks; i++) {
i1_min = enc->row_byte(enc->charsetblocks[i].start / enc->cols);
i1_max = enc->row_byte((enc->charsetblocks[i].end-1) / enc->cols);
if (i > 0)
printf(" || ");
if (i1_min == i1_max)
printf("(c1 == 0x%02x)", i1_min);
else
printf("(c1 >= 0x%02x && c1 <= 0x%02x)", i1_min, i1_max);
}
printf(") {\n");
printf(" if (n >= 2) {\n");
printf(" unsigned char c2 = s[1];\n");
printf(" if (");
printf(enc->check_col_expr, "c2");
printf(") {\n");
printf(" unsigned int i = %d * (", enc->cols);
printf(enc->byte_row_expr, "c1");
printf(") + (");
printf(enc->byte_col_expr, "c2");
printf(");\n");
printf(" unsigned short wc = 0xfffd;\n");
for (i = 0; i < enc->ncharsetblocks; i++) {
printf(" ");
if (i > 0)
printf("} else ");
if (i < enc->ncharsetblocks-1)
printf("if (i < %d) ", enc->charsetblocks[i+1].start);
printf("{\n");
printf(" if (i < %d)\n", enc->charsetblocks[i].end);
printf(" wc = %s_2uni_page%02x[i", name, enc->row_byte(enc->charsetblocks[i].start / enc->cols));
if (enc->charsetblocks[i].start > 0)
printf("-%d", enc->charsetblocks[i].start);
printf("];\n");
}
printf(" }\n");
printf(" if (wc != 0xfffd) {\n");
printf(" *pwc = (ucs4_t) wc;\n");
printf(" return 2;\n");
printf(" }\n");
printf(" }\n");
printf(" return RET_ILSEQ;\n");
printf(" }\n");
printf(" return RET_TOOFEW(0);\n");
printf(" }\n");
printf(" return RET_ILSEQ;\n");
printf("}\n");
printf("\n");
}
/*
* Computes the uni2charset[0x0000..0xffff] array.
*/
static void invert (Encoding* enc)
{
int row, col, j;
enc->uni2charset = (int*) malloc(0x10000*sizeof(int));
for (j = 0; j < 0x10000; j++)
enc->uni2charset[j] = 0;
for (row = 0; row < enc->rows; row++)
for (col = 0; col < enc->cols; col++) {
j = enc->charset2uni[row][col];
if (j != 0xfffd)
enc->uni2charset[j] = 0x100 * enc->row_byte(row) + enc->col_byte(col);
}
}
/*
* Outputs the unicode to charset table and function, using a linear array.
* (Suitable if the table is dense.)
*/
static void output_uni2charset_dense (const char* name, Encoding* enc)
{
/* Like in 8bit_tab_to_h.c */
bool pages[0x100];
int line[0x2000];
int tableno;
struct { int minline; int maxline; int usecount; } tables[0x2000];
bool first;
int row, col, j, p, j1, j2, t;
for (p = 0; p < 0x100; p++)
pages[p] = false;
for (row = 0; row < enc->rows; row++)
for (col = 0; col < enc->cols; col++) {
j = enc->charset2uni[row][col];
if (j != 0xfffd)
pages[j>>8] = true;
}
for (j1 = 0; j1 < 0x2000; j1++) {
bool all_invalid = true;
for (j2 = 0; j2 < 8; j2++) {
j = 8*j1+j2;
if (enc->uni2charset[j] != 0)
all_invalid = false;
}
if (all_invalid)
line[j1] = -1;
else
line[j1] = 0;
}
tableno = 0;
for (j1 = 0; j1 < 0x2000; j1++) {
if (line[j1] >= 0) {
if (tableno > 0
&& ((j1 > 0 && line[j1-1] == tableno-1)
|| ((tables[tableno-1].maxline >> 5) == (j1 >> 5)
&& j1 - tables[tableno-1].maxline <= 8))) {
line[j1] = tableno-1;
tables[tableno-1].maxline = j1;
} else {
tableno++;
line[j1] = tableno-1;
tables[tableno-1].minline = tables[tableno-1].maxline = j1;
}
}
}
for (t = 0; t < tableno; t++) {
tables[t].usecount = 0;
j1 = 8*tables[t].minline;
j2 = 8*(tables[t].maxline+1);
for (j = j1; j < j2; j++)
if (enc->uni2charset[j] != 0)
tables[t].usecount++;
}
{
p = -1;
for (t = 0; t < tableno; t++)
if (tables[t].usecount > 1) {
/* p = tables[t].minline >> 5; */
p = tables[t].minline ;
/* printf("static const unsigned short %s_page%02x[%d] = {\n", name, p, 8*(tables[t].maxline-tables[t].minline+1)); */
printf("static const unsigned short %s_page%04x[%d] = {\n", name, p, 8*(tables[t].maxline-tables[t].minline+1));
for (j1 = tables[t].minline; j1 <= tables[t].maxline; j1++) {
if ((j1 % 0x20) == 0 && j1 > tables[t].minline)
printf(" /* 0x%04x */\n", 8*j1);
printf(" ");
for (j2 = 0; j2 < 8; j2++) {
j = 8*j1+j2;
printf(" 0x%04x,", enc->uni2charset[j]);
}
printf(" /*0x%02x-0x%02x*/\n", 8*(j1 % 0x20), 8*(j1 % 0x20)+7);
}
printf("};\n");
}
if (p >= 0)
printf("\n");
}
printf("static int\n%s_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)\n", name);
printf("{\n");
printf(" if (n >= 2) {\n");
printf(" unsigned short c = 0;\n");
first = true;
for (j1 = 0; j1 < 0x2000;) {
t = line[j1];
for (j2 = j1; j2 < 0x2000 && line[j2] == t; j2++);
if (t >= 0) {
if (j1 != tables[t].minline) abort();
if (j2 > tables[t].maxline+1) abort();
j2 = tables[t].maxline+1;
if (first)
printf(" ");
else
printf(" else ");
first = false;
if (tables[t].usecount == 0) abort();
if (tables[t].usecount == 1) {
if (j2 != j1+1) abort();
for (j = 8*j1; j < 8*j2; j++)
if (enc->uni2charset[j] != 0) {
printf("if (wc == 0x%04x)\n c = 0x%02x;\n", j, enc->uni2charset[j]);
break;
}
} else {
if (j1 == 0) {
printf("if (wc < 0x%04x)", 8*j2);
} else {
printf("if (wc >= 0x%04x && wc < 0x%04x)", 8*j1, 8*j2);
}
/* printf("\n c = %s_page%02x[wc", name, j1 >> 5); */
printf("\n c = %s_page%04x[wc", name, j1);
if (tables[t].minline > 0)
printf("-0x%04x", 8*j1);
printf("];\n");
}
}
j1 = j2;
}
printf(" if (c != 0) {\n");
printf(" r[0] = (c >> 8); r[1] = (c & 0xff);\n");
printf(" return 2;\n");
printf(" }\n");
printf(" return RET_ILSEQ;\n");
printf(" }\n");
printf(" return RET_TOOSMALL;\n");
printf("}\n");
}
/*
* Outputs the unicode to charset table and function, using a packed array.
* (Suitable if the table is sparse.)
*/
static void output_uni2charset_sparse (const char* name, Encoding* enc)
{
bool pages[0x100];
Block pageblocks[0x100]; int npageblocks;
int indx2charset[0x10000];
int summary_indx[0x1000];
int summary_used[0x1000];
int i, row, col, j, p, j1, j2, indx;
/* Fill pages[0x100]. */
for (p = 0; p < 0x100; p++)
pages[p] = false;
for (row = 0; row < enc->rows; row++)
for (col = 0; col < enc->cols; col++) {
j = enc->charset2uni[row][col];
if (j != 0xfffd)
pages[j>>8] = true;
}
#if 0
for (p = 0; p < 0x100; p++)
if (pages[p]) {
printf("static const unsigned short %s_page%02x[256] = {\n", name, p);
for (j1 = 0; j1 < 32; j1++) {
printf(" ");
for (j2 = 0; j2 < 8; j2++)
printf("0x%04x, ", enc->uni2charset[256*p+8*j1+j2]);
printf("/""*0x%02x-0x%02x*""/\n", 8*j1, 8*j1+7);
}
printf("};\n");
}
printf("\n");
#endif
/* Fill summary_indx[] and summary_used[]. */
indx = 0;
for (j1 = 0; j1 < 0x1000; j1++) {
summary_indx[j1] = indx;
summary_used[j1] = 0;
for (j2 = 0; j2 < 16; j2++) {
j = 16*j1+j2;
if (enc->uni2charset[j] != 0) {
indx2charset[indx++] = enc->uni2charset[j];
summary_used[j1] |= (1 << j2);
}
}
}
/* Fill npageblocks and pageblocks[]. */
npageblocks = 0;
for (p = 0; p < 0x100; ) {
if (pages[p] && (p == 0 || !pages[p-1])) {
pageblocks[npageblocks].start = 16*p;
do p++; while (p < 0x100 && pages[p]);
j1 = 16*p;
while (summary_used[j1-1] == 0) j1--;
pageblocks[npageblocks].end = j1;
npageblocks++;
} else
p++;
}
printf("static const unsigned short %s_2charset[%d] = {\n", name, indx);
for (i = 0; i < indx; ) {
if ((i % 8) == 0) printf(" ");
printf(" 0x%04x,", indx2charset[i]);
i++;
if ((i % 8) == 0 || i == indx) printf("\n");
}
printf("};\n");
printf("\n");
for (i = 0; i < npageblocks; i++) {
printf("static const Summary16 %s_uni2indx_page%02x[%d] = {\n", name,
pageblocks[i].start/16, pageblocks[i].end-pageblocks[i].start);
for (j1 = pageblocks[i].start; j1 < pageblocks[i].end; ) {
if (((16*j1) % 0x100) == 0) printf(" /""* 0x%04x *""/\n", 16*j1);
if ((j1 % 4) == 0) printf(" ");
printf(" { %4d, 0x%04x },", summary_indx[j1], summary_used[j1]);
j1++;
if ((j1 % 4) == 0 || j1 == pageblocks[i].end) printf("\n");
}
printf("};\n");
}
printf("\n");
printf("static int\n");
printf("%s_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)\n", name);
printf("{\n");
printf(" if (n >= 2) {\n");
printf(" const Summary16 *summary = NULL;\n");
for (i = 0; i < npageblocks; i++) {
printf(" ");
if (i > 0)
printf("else ");
printf("if (wc >= 0x%04x && wc < 0x%04x)\n",
16*pageblocks[i].start, 16*pageblocks[i].end);
printf(" summary = &%s_uni2indx_page%02x[(wc>>4)", name,
pageblocks[i].start/16);
if (pageblocks[i].start > 0)
printf("-0x%03x", pageblocks[i].start);
printf("];\n");
}
printf(" if (summary) {\n");
printf(" unsigned short used = summary->used;\n");
printf(" unsigned int i = wc & 0x0f;\n");
printf(" if (used & ((unsigned short) 1 << i)) {\n");
printf(" unsigned short c;\n");
printf(" /* Keep in `used' only the bits 0..i-1. */\n");
printf(" used &= ((unsigned short) 1 << i) - 1;\n");
printf(" /* Add `summary->indx' and the number of bits set in `used'. */\n");
printf(" used = (used & 0x5555) + ((used & 0xaaaa) >> 1);\n");
printf(" used = (used & 0x3333) + ((used & 0xcccc) >> 2);\n");
printf(" used = (used & 0x0f0f) + ((used & 0xf0f0) >> 4);\n");
printf(" used = (used & 0x00ff) + (used >> 8);\n");
printf(" c = %s_2charset[summary->indx + used];\n", name);
printf(" r[0] = (c >> 8); r[1] = (c & 0xff);\n");
printf(" return 2;\n");
printf(" }\n");
printf(" }\n");
printf(" return RET_ILSEQ;\n");
printf(" }\n");
printf(" return RET_TOOSMALL;\n");
printf("}\n");
}
/* ISO-2022/EUC specifics */
static int row_byte_normal (int row) { return 0x21+row; }
static int col_byte_normal (int col) { return 0x21+col; }
static int byte_row_normal (int byte) { return byte-0x21; }
static int byte_col_normal (int byte) { return byte-0x21; }
static void do_normal (const char* name)
{
Encoding enc;
enc.rows = 94;
enc.cols = 94;
enc.row_byte = row_byte_normal;
enc.col_byte = col_byte_normal;
enc.byte_row = byte_row_normal;
enc.byte_col = byte_col_normal;
enc.check_row_expr = "%1$s >= 0x21 && %1$s < 0x7f";
enc.check_col_expr = "%1$s >= 0x21 && %1$s < 0x7f";
enc.byte_row_expr = "%1$s - 0x21";
enc.byte_col_expr = "%1$s - 0x21";
read_table(&enc);
output_charset2uni(name,&enc);
invert(&enc); output_uni2charset_sparse(name,&enc);
}
/* Note: On first sight, the jisx0212_2charset[] table seems to be in order,
starting from the charset=0x3021/uni=0x4e02 pair. But it's only mostly in
order. There are 75 out-of-order values, scattered all throughout the table.
*/
static void do_normal_only_charset2uni (const char* name)
{
Encoding enc;
enc.rows = 94;
enc.cols = 94;
enc.row_byte = row_byte_normal;
enc.col_byte = col_byte_normal;
enc.byte_row = byte_row_normal;
enc.byte_col = byte_col_normal;
enc.check_row_expr = "%1$s >= 0x21 && %1$s < 0x7f";
enc.check_col_expr = "%1$s >= 0x21 && %1$s < 0x7f";
enc.byte_row_expr = "%1$s - 0x21";
enc.byte_col_expr = "%1$s - 0x21";
read_table(&enc);
output_charset2uni(name,&enc);
}
/* CNS 11643 specifics - trick to put two tables into one */
static int row_byte_cns11643 (int row) {
return 0x100 * (row / 94) + (row % 94) + 0x21;
}
static int byte_row_cns11643 (int byte) {
return (byte >= 0x100 && byte < 0x200 ? byte-0x121 :
byte >= 0x200 && byte < 0x300 ? byte-0x221+94 :
byte >= 0x300 && byte < 0x400 ? byte-0x321+2*94 :
-1);
}
static void do_cns11643_only_uni2charset (const char* name)
{
Encoding enc;
int j, x;
enc.rows = 3*94;
enc.cols = 94;
enc.row_byte = row_byte_cns11643;
enc.col_byte = col_byte_normal;
enc.byte_row = byte_row_cns11643;
enc.byte_col = byte_col_normal;
enc.check_row_expr = "%1$s >= 0x21 && %1$s < 0x7f";
enc.check_col_expr = "%1$s >= 0x21 && %1$s < 0x7f";
enc.byte_row_expr = "%1$s - 0x21";
enc.byte_col_expr = "%1$s - 0x21";
read_table(&enc);
invert(&enc);
/* Move the 2 plane bits into the unused bits 15 and 7. */
for (j = 0; j < 0x10000; j++) {
x = enc.uni2charset[j];
if (x != 0) {
if (x & 0x8080) abort();
switch (x >> 16) {
case 0: /* plane 1 */ x = (x & 0xffff) | 0x0000; break;
case 1: /* plane 2 */ x = (x & 0xffff) | 0x0080; break;
case 2: /* plane 3 */ x = (x & 0xffff) | 0x8000; break;
default: abort();
}
enc.uni2charset[j] = x;
}
}
output_uni2charset_sparse(name,&enc);
}
/* GBK specifics */
static int row_byte_gbk1 (int row) {
return 0x81+row;
}
static int col_byte_gbk1 (int col) {
return (col >= 0x3f ? 0x41 : 0x40) + col;
}
static int byte_row_gbk1 (int byte) {
if (byte >= 0x81 && byte < 0xff)
return byte-0x81;
else
return -1;
}
static int byte_col_gbk1 (int byte) {
if (byte >= 0x40 && byte < 0x7f)
return byte-0x40;
else if (byte >= 0x80 && byte < 0xff)
return byte-0x41;
else
return -1;
}
static void do_gbk1 (const char* name)
{
Encoding enc;
enc.rows = 126;
enc.cols = 190;
enc.row_byte = row_byte_gbk1;
enc.col_byte = col_byte_gbk1;
enc.byte_row = byte_row_gbk1;
enc.byte_col = byte_col_gbk1;
enc.check_row_expr = "%1$s >= 0x81 && %1$s < 0xff";
enc.check_col_expr = "(%1$s >= 0x40 && %1$s < 0x7f) || (%1$s >= 0x80 && %1$s < 0xff)";
enc.byte_row_expr = "%1$s - 0x81";
enc.byte_col_expr = "%1$s - (%1$s >= 0x80 ? 0x41 : 0x40)";
read_table(&enc);
output_charset2uni(name,&enc);
invert(&enc); output_uni2charset_dense(name,&enc);
}
static void do_gbk1_only_charset2uni (const char* name)
{
Encoding enc;
enc.rows = 126;
enc.cols = 190;
enc.row_byte = row_byte_gbk1;
enc.col_byte = col_byte_gbk1;
enc.byte_row = byte_row_gbk1;
enc.byte_col = byte_col_gbk1;
enc.check_row_expr = "%1$s >= 0x81 && %1$s < 0xff";
enc.check_col_expr = "(%1$s >= 0x40 && %1$s < 0x7f) || (%1$s >= 0x80 && %1$s < 0xff)";
enc.byte_row_expr = "%1$s - 0x81";
enc.byte_col_expr = "%1$s - (%1$s >= 0x80 ? 0x41 : 0x40)";
read_table(&enc);
output_charset2uni(name,&enc);
}
static int row_byte_gbk2 (int row) {
return 0x81+row;
}
static int col_byte_gbk2 (int col) {
return (col >= 0x3f ? 0x41 : 0x40) + col;
}
static int byte_row_gbk2 (int byte) {
if (byte >= 0x81 && byte < 0xff)
return byte-0x81;
else
return -1;
}
static int byte_col_gbk2 (int byte) {
if (byte >= 0x40 && byte < 0x7f)
return byte-0x40;
else if (byte >= 0x80 && byte < 0xa1)
return byte-0x41;
else
return -1;
}
static void do_gbk2_only_charset2uni (const char* name)
{
Encoding enc;
enc.rows = 126;
enc.cols = 96;
enc.row_byte = row_byte_gbk2;
enc.col_byte = col_byte_gbk2;
enc.byte_row = byte_row_gbk2;
enc.byte_col = byte_col_gbk2;
enc.check_row_expr = "%1$s >= 0x81 && %1$s < 0xff";
enc.check_col_expr = "(%1$s >= 0x40 && %1$s < 0x7f) || (%1$s >= 0x80 && %1$s < 0xa1)";
enc.byte_row_expr = "%1$s - 0x81";
enc.byte_col_expr = "%1$s - (%1$s >= 0x80 ? 0x41 : 0x40)";
read_table(&enc);
output_charset2uni(name,&enc);
}
static void do_gbk1_only_uni2charset (const char* name)
{
Encoding enc;
enc.rows = 126;
enc.cols = 190;
enc.row_byte = row_byte_gbk1;
enc.col_byte = col_byte_gbk1;
enc.byte_row = byte_row_gbk1;
enc.byte_col = byte_col_gbk1;
enc.check_row_expr = "%1$s >= 0x81 && %1$s < 0xff";
enc.check_col_expr = "(%1$s >= 0x40 && %1$s < 0x7f) || (%1$s >= 0x80 && %1$s < 0xff)";
enc.byte_row_expr = "%1$s - 0x81";
enc.byte_col_expr = "%1$s - (%1$s >= 0x80 ? 0x41 : 0x40)";
read_table(&enc);
invert(&enc); output_uni2charset_sparse(name,&enc);
}
/* KSC 5601 specifics */
/*
* Reads the charset2uni table from standard input.
*/
static void read_table_ksc5601 (Encoding* enc)
{
int row, col, i, i1, i2, c, j;
enc->charset2uni = (int**) malloc(enc->rows*sizeof(int*));
for (row = 0; row < enc->rows; row++)
enc->charset2uni[row] = (int*) malloc(enc->cols*sizeof(int));
for (row = 0; row < enc->rows; row++)
for (col = 0; col < enc->cols; col++)
enc->charset2uni[row][col] = 0xfffd;
c = getc(stdin);
ungetc(c,stdin);
if (c == '#') {
/* Read a unicode.org style .TXT file. */
for (;;) {
c = getc(stdin);
if (c == EOF)
break;
if (c == '\n' || c == ' ' || c == '\t')
continue;
if (c == '#') {
do { c = getc(stdin); } while (!(c == EOF || c == '\n'));
continue;
}
ungetc(c,stdin);
if (scanf("0x%x", &j) != 1)
exit(1);
i1 = j >> 8;
i2 = j & 0xff;
if (scanf(" 0x%x", &j) != 1)
exit(1);
/* Take only the range covered by KS C 5601.1987-0 = KS C 5601.1989-0
= KS X 1001.1992, ignore the rest. */
if (!(i1 >= 128+33 && i1 < 128+127 && i2 >= 128+33 && i2 < 128+127))
continue; /* KSC5601 specific */
i1 &= 0x7f; /* KSC5601 specific */
i2 &= 0x7f; /* KSC5601 specific */
row = enc->byte_row(i1);
col = enc->byte_col(i2);
if (row < 0 || col < 0) {
fprintf(stderr, "lost entry for %02x %02x\n", i1, i2);
exit(1);
}
enc->charset2uni[row][col] = j;
}
} else {
/* Read a table of hexadecimal Unicode values. */
for (i1 = 33; i1 < 127; i1++)
for (i2 = 33; i2 < 127; i2++) {
i = scanf("%x", &j);
if (i == EOF)
goto read_done;
if (i != 1)
exit(1);
if (j < 0 || j == 0xffff)
j = 0xfffd;
if (j != 0xfffd) {
if (enc->byte_row(i1) < 0 || enc->byte_col(i2) < 0) {
fprintf(stderr, "lost entry at %02x %02x\n", i1, i2);
exit (1);
}
enc->charset2uni[enc->byte_row(i1)][enc->byte_col(i2)] = j;
}
}
read_done: ;
}
}
static void do_ksc5601 (const char* name)
{
Encoding enc;
enc.rows = 94;
enc.cols = 94;
enc.row_byte = row_byte_normal;
enc.col_byte = col_byte_normal;
enc.byte_row = byte_row_normal;
enc.byte_col = byte_col_normal;
enc.check_row_expr = "%1$s >= 0x21 && %1$s < 0x7f";
enc.check_col_expr = "%1$s >= 0x21 && %1$s < 0x7f";
enc.byte_row_expr = "%1$s - 0x21";
enc.byte_col_expr = "%1$s - 0x21";
read_table_ksc5601(&enc);
output_charset2uni(name,&enc);
invert(&enc); output_uni2charset_sparse(name,&enc);
}
/* Big5 specifics */
static int row_byte_big5 (int row) {
return 0xa1+row;
}
static int col_byte_big5 (int col) {
return (col >= 0x3f ? 0x62 : 0x40) + col;
}
static int byte_row_big5 (int byte) {
if (byte >= 0xa1 && byte < 0xff)
return byte-0xa1;
else
return -1;
}
static int byte_col_big5 (int byte) {
if (byte >= 0x40 && byte < 0x7f)
return byte-0x40;
else if (byte >= 0xa1 && byte < 0xff)
return byte-0x62;
else
return -1;
}
static void do_big5 (const char* name)
{
Encoding enc;
enc.rows = 94;
enc.cols = 157;
enc.row_byte = row_byte_big5;
enc.col_byte = col_byte_big5;
enc.byte_row = byte_row_big5;
enc.byte_col = byte_col_big5;
enc.check_row_expr = "%1$s >= 0xa1 && %1$s < 0xff";
enc.check_col_expr = "(%1$s >= 0x40 && %1$s < 0x7f) || (%1$s >= 0xa1 && %1$s < 0xff)";
enc.byte_row_expr = "%1$s - 0xa1";
enc.byte_col_expr = "%1$s - (%1$s >= 0xa1 ? 0x62 : 0x40)";
read_table(&enc);
output_charset2uni(name,&enc);
invert(&enc); output_uni2charset_sparse(name,&enc);
}
/* Johab Hangul specifics */
static int row_byte_johab_hangul (int row) {
return 0x84+row;
}
static int col_byte_johab_hangul (int col) {
return (col >= 0x3e ? 0x43 : 0x41) + col;
}
static int byte_row_johab_hangul (int byte) {
if (byte >= 0x84 && byte < 0xd4)
return byte-0x84;
else
return -1;
}
static int byte_col_johab_hangul (int byte) {
if (byte >= 0x41 && byte < 0x7f)
return byte-0x41;
else if (byte >= 0x81 && byte < 0xff)
return byte-0x43;
else
return -1;
}
static void do_johab_hangul (const char* name)
{
Encoding enc;
enc.rows = 80;
enc.cols = 188;
enc.row_byte = row_byte_johab_hangul;
enc.col_byte = col_byte_johab_hangul;
enc.byte_row = byte_row_johab_hangul;
enc.byte_col = byte_col_johab_hangul;
enc.check_row_expr = "%1$s >= 0x84 && %1$s < 0xd4";
enc.check_col_expr = "(%1$s >= 0x41 && %1$s < 0x7f) || (%1$s >= 0x81 && %1$s < 0xff)";
enc.byte_row_expr = "%1$s - 0x84";
enc.byte_col_expr = "%1$s - (%1$s >= 0x81 ? 0x43 : 0x41)";
read_table(&enc);
output_charset2uni(name,&enc);
invert(&enc); output_uni2charset_dense(name,&enc);
}
/* SJIS specifics */
static int row_byte_sjis (int row) {
return (row >= 0x1f ? 0xc1 : 0x81) + row;
}
static int col_byte_sjis (int col) {
return (col >= 0x3f ? 0x41 : 0x40) + col;
}
static int byte_row_sjis (int byte) {
if (byte >= 0x81 && byte < 0xa0)
return byte-0x81;
else if (byte >= 0xe0)
return byte-0xc1;
else
return -1;
}
static int byte_col_sjis (int byte) {
if (byte >= 0x40 && byte < 0x7f)
return byte-0x40;
else if (byte >= 0x80 && byte < 0xfd)
return byte-0x41;
else
return -1;
}
static void do_sjis (const char* name)
{
Encoding enc;
enc.rows = 94;
enc.cols = 188;
enc.row_byte = row_byte_sjis;
enc.col_byte = col_byte_sjis;
enc.byte_row = byte_row_sjis;
enc.byte_col = byte_col_sjis;
enc.check_row_expr = "(%1$s >= 0x81 && %1$s < 0xa0) || (%1$s >= 0xe0)";
enc.check_col_expr = "(%1$s >= 0x40 && %1$s < 0x7f) || (%1$s >= 0x80 && %1$s < 0xfd)";
enc.byte_row_expr = "%1$s - (%1$s >= 0xe0 ? 0xc1 : 0x81)";
enc.byte_col_expr = "%1$s - (%1$s >= 0x80 ? 0x41 : 0x40)";
read_table(&enc);
output_charset2uni(name,&enc);
invert(&enc); output_uni2charset_sparse(name,&enc);
}
/* Main program */
int main (int argc, char *argv[])
{
const char* charsetname;
const char* name;
if (argc != 3)
exit(1);
charsetname = argv[1];
name = argv[2];
output_title(charsetname);
if (!strcmp(name,"gb2312") || !strcmp(name,"gb12345ext")
|| !strcmp(name,"jisx0208") || !strcmp(name,"jisx0212"))
do_normal(name);
else if (!strcmp(name,"cns11643_1") || !strcmp(name,"cns11643_2")
|| !strcmp(name,"cns11643_3"))
do_normal_only_charset2uni(name);
else if (!strcmp(name,"cns11643_inv"))
do_cns11643_only_uni2charset(name);
else if (!strcmp(name,"gbkext1"))
do_gbk1_only_charset2uni(name);
else if (!strcmp(name,"gbkext2"))
do_gbk2_only_charset2uni(name);
else if (!strcmp(name,"gbkext_inv"))
do_gbk1_only_uni2charset(name);
else if (!strcmp(name,"cp936ext"))
do_gbk1(name);
else if (!strcmp(name,"ksc5601"))
do_ksc5601(name);
else if (!strcmp(name,"big5") || !strcmp(name,"cp950ext"))
do_big5(name);
else if (!strcmp(name,"johab_hangul"))
do_johab_hangul(name);
else if (!strcmp(name,"cp932ext"))
do_sjis(name);
else
exit(1);
return 0;
}