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/*
* txt2enc.c --
*
* Simple program to compile up the encodings tables from the CD that
* came with "The Unicode Standard, Version 2.0" into a form that can
* be quickly loaded into Tcl.
*
* Copyright (c) 1997 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* SCCS: @(#) txt2enc.c 1.1 98/01/28 11:42:09
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
typedef unsigned short Rune;
int
main(int argc, char **argv)
{
FILE *fp;
Rune *toUnicode[256];
int i, multiByte, enc, uni, hi, lo, fixmissing, used, maxEnc;
int ch, encColumn, uniColumn, fallbackKnown, width;
char *fallbackString, *str, *rest, *dot;
unsigned int magic, type, symbol, fallbackChar;
Rune rune;
char buf[256];
extern char *optarg;
extern int optind, opterr;
static char *typeString[] = {"single", "double", "multi"};
encColumn = 0;
uniColumn = 1;
fallbackString = "QUESTION MARK";
fallbackChar = '\0';
fallbackKnown = 0;
type = -1;
symbol = 0;
fixmissing = 1;
opterr = 0;
while (1) {
ch = getopt(argc, argv, "e:u:f:t:sm");
if (ch == -1) {
break;
}
switch (ch) {
case 'e':
encColumn = atoi(optarg);
break;
case 'u':
uniColumn = atoi(optarg);
break;
case 'f':
fallbackKnown = 1;
if (optarg[1] == '\0') {
fallbackChar = optarg[0];
} else {
fallbackChar = strtol(optarg, &rest, 16);
if (*rest != '\0') {
fallbackChar = '\0';
fallbackKnown = 0;
fallbackString = optarg;
}
}
case 't':
if (strcmp(optarg, "single") == 0) {
type = 0;
} else if (strcmp(optarg, "double") == 0) {
type = 1;
} else if (strcmp(optarg, "multi") == 0) {
type = 2;
} else {
goto usage;
}
break;
case 's':
symbol = 1;
break;
case 'm':
fixmissing = 0;
break;
default:
goto usage;
}
}
if ((optind < argc - 1) || (optind >= argc)) {
usage:
fputs("usage: mkencoding [-e column] [-u column] [-f fallback] [-t type] [-s] [-m] file\n", stderr);
fputs(" -e\tcolumn containing characters in encoding (default: 0)\n", stderr);
fputs(" -u\tcolumn containing characters in Unicode (default: 1)\n", stderr);
fputs(" -f\tfallback character (default: QUESTION MARK)\n", stderr);
fputs(" -t\toverride implicit type with single, double, or multi\n", stderr);
fputs(" -s\tsymbol+ascii encoding\n", stderr);
fputs(" -m\tdon't implicitly include 007F\n", stderr);
return 1;
}
fp = fopen(argv[argc - 1], "r");
if (fp == NULL) {
perror(argv[argc - 1]);
return 1;
}
for (i = 0; i < 256; i++) {
toUnicode[i] = NULL;
}
maxEnc = 0;
width = 0;
multiByte = 0;
while (fgets(buf, sizeof(buf), fp) != NULL) {
str = buf;
enc = -1;
uni = -1;
while (isspace(*str)) {
str++;
}
if (str[0] == '#') {
continue;
}
for (i = 0; *str != '\0'; i++) {
if (*str == '#') {
if (fallbackKnown == 0) {
str++;
while (isspace(*str)) {
str++;
}
str[strlen(str) - 1] = '\0';
if (strcmp(str, fallbackString) == 0) {
fallbackChar = enc;
fallbackKnown = 1;
} else if (strstr(str, fallbackString) != NULL) {
fallbackChar = enc;
}
}
break;
} else {
rune = strtol(str, &rest, 16);
if (rest == str) {
rest++;
} else if (i == uniColumn) {
uni = rune;
} else if (i == encColumn) {
enc = rune;
if ((width != 0) && (width != rest - str)) {
multiByte = 1;
}
width = rest - str;
if (enc > maxEnc) {
maxEnc = enc;
}
}
}
while (isspace(*rest)) {
rest++;
}
str = rest;
}
if (enc < 32 || uni < 32) {
continue;
}
hi = enc >> 8;
lo = enc & 0xFF;
if (toUnicode[hi] == NULL) {
toUnicode[hi] = (Rune *) malloc(256 * sizeof(Rune));
memset(toUnicode[hi], 0, 256 * sizeof(Rune));
}
toUnicode[hi][lo] = uni;
}
fclose(fp);
dot = strrchr(argv[argc - 1], '.');
if (dot != NULL) {
*dot = '\0';
}
if (type == -1) {
if (multiByte) {
type = 2;
} else if (maxEnc > 255) {
type = 1;
} else {
type = 0;
}
}
if (type != 1) {
if (toUnicode[0] == NULL) {
toUnicode[0] = (Rune *) malloc(256 * sizeof(Rune));
memset(toUnicode[0], 0, 256 * sizeof(Rune));
}
for (i = 0; i < 0x20; i++) {
toUnicode[0][i] = i;
}
if (fixmissing) {
if (toUnicode[0x7F] == NULL && toUnicode[0][0x7F] == 0) {
toUnicode[0][0x7F] = 0x7F;
}
}
}
printf("# Encoding file: %s, %s-byte\n", argv[argc - 1], typeString[type]);
if (fallbackChar == '\0') {
fallbackChar = '?';
}
used = 0;
for (hi = 0; hi < 256; hi++) {
if (toUnicode[hi] != NULL) {
used++;
}
}
printf("%c\n%04X %d %d\n", "SDM"[type], fallbackChar, symbol, used);
for (hi = 0; hi < 256; hi++) {
if (toUnicode[hi] != NULL) {
printf("%02X\n", hi);
for (lo = 0; lo < 256; lo++) {
printf("%04X", toUnicode[hi][lo]);
if ((lo & 0x0F) == 0x0F) {
putchar('\n');
}
}
}
}
for (hi = 0; hi < 256; hi++) {
if (toUnicode[hi] != NULL) {
free(toUnicode[hi]);
toUnicode[hi] = NULL;
}
}
return 0;
}
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