343 lines
10 KiB
C
343 lines
10 KiB
C
/* Make ucnid.h from various sources.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Run this program as
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./makeucnid ucnid.tab UnicodeData.txt DerivedNormalizationProps.txt \
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> ucnid.h
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*/
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdbool.h>
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#include <stdlib.h>
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enum {
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C99 = 1,
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CXX = 2,
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digit = 4,
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not_NFC = 8,
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not_NFKC = 16,
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maybe_not_NFC = 32
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};
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static unsigned flags[65536];
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static unsigned short decomp[65536][2];
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static unsigned char combining_value[65536];
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/* Die! */
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static void
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fail (const char *s)
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{
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fprintf (stderr, "%s\n", s);
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exit (1);
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}
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/* Read ucnid.tab and set the C99 and CXX flags in header[]. */
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static void
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read_ucnid (const char *fname)
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{
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FILE *f = fopen (fname, "r");
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unsigned fl = 0;
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if (!f)
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fail ("opening ucnid.tab");
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for (;;)
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{
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char line[256];
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if (!fgets (line, sizeof (line), f))
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break;
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if (strcmp (line, "[C99]\n") == 0)
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fl = C99;
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else if (strcmp (line, "[CXX]\n") == 0)
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fl = CXX;
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else if (isxdigit (line[0]))
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{
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char *l = line;
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while (*l)
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{
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unsigned long start, end;
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char *endptr;
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start = strtoul (l, &endptr, 16);
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if (endptr == l || (*endptr != '-' && ! isspace (*endptr)))
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fail ("parsing ucnid.tab [1]");
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l = endptr;
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if (*l != '-')
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end = start;
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else
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{
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end = strtoul (l + 1, &endptr, 16);
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if (end < start)
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fail ("parsing ucnid.tab, end before start");
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l = endptr;
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if (! isspace (*l))
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fail ("parsing ucnid.tab, junk after range");
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}
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while (isspace (*l))
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l++;
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if (end > 0xFFFF)
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fail ("parsing ucnid.tab, end too large");
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while (start <= end)
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flags[start++] |= fl;
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}
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}
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}
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if (ferror (f))
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fail ("reading ucnid.tab");
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fclose (f);
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}
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/* Read UnicodeData.txt and set the 'digit' flag, and
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also fill in the 'decomp' table to be the decompositions of
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characters for which both the character decomposed and all the code
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points in the decomposition are either C99 or CXX. */
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static void
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read_table (char *fname)
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{
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FILE * f = fopen (fname, "r");
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if (!f)
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fail ("opening UnicodeData.txt");
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for (;;)
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{
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char line[256];
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unsigned long codepoint, this_decomp[4];
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char *l;
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int i;
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int decomp_useful;
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if (!fgets (line, sizeof (line), f))
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break;
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codepoint = strtoul (line, &l, 16);
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if (l == line || *l != ';')
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fail ("parsing UnicodeData.txt, reading code point");
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if (codepoint > 0xffff || ! (flags[codepoint] & (C99 | CXX)))
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continue;
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do {
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l++;
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} while (*l != ';');
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/* Category value; things starting with 'N' are numbers of some
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kind. */
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if (*++l == 'N')
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flags[codepoint] |= digit;
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do {
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l++;
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} while (*l != ';');
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/* Canonical combining class; in NFC/NFKC, they must be increasing
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(or zero). */
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if (! isdigit (*++l))
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fail ("parsing UnicodeData.txt, combining class not number");
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combining_value[codepoint] = strtoul (l, &l, 10);
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if (*l++ != ';')
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fail ("parsing UnicodeData.txt, junk after combining class");
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/* Skip over bidi value. */
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do {
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l++;
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} while (*l != ';');
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/* Decomposition mapping. */
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decomp_useful = flags[codepoint];
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if (*++l == '<') /* Compatibility mapping. */
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continue;
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for (i = 0; i < 4; i++)
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{
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if (*l == ';')
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break;
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if (!isxdigit (*l))
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fail ("parsing UnicodeData.txt, decomposition format");
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this_decomp[i] = strtoul (l, &l, 16);
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decomp_useful &= flags[this_decomp[i]];
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while (isspace (*l))
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l++;
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}
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if (i > 2) /* Decomposition too long. */
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fail ("parsing UnicodeData.txt, decomposition too long");
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if (decomp_useful)
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while (--i >= 0)
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decomp[codepoint][i] = this_decomp[i];
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}
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if (ferror (f))
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fail ("reading UnicodeData.txt");
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fclose (f);
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}
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/* Read DerivedNormalizationProps.txt and set the flags that say whether
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a character is in NFC, NFKC, or is context-dependent. */
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static void
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read_derived (const char *fname)
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{
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FILE * f = fopen (fname, "r");
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if (!f)
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fail ("opening DerivedNormalizationProps.txt");
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for (;;)
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{
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char line[256];
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unsigned long start, end;
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char *l;
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bool not_NFC_p, not_NFKC_p, maybe_not_NFC_p;
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if (!fgets (line, sizeof (line), f))
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break;
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not_NFC_p = (strstr (line, "; NFC_QC; N") != NULL);
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not_NFKC_p = (strstr (line, "; NFKC_QC; N") != NULL);
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maybe_not_NFC_p = (strstr (line, "; NFC_QC; M") != NULL);
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if (! not_NFC_p && ! not_NFKC_p && ! maybe_not_NFC_p)
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continue;
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start = strtoul (line, &l, 16);
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if (l == line)
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fail ("parsing DerivedNormalizationProps.txt, reading start");
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if (start > 0xffff)
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continue;
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if (*l == '.' && l[1] == '.')
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end = strtoul (l + 2, &l, 16);
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else
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end = start;
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while (start <= end)
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flags[start++] |= ((not_NFC_p ? not_NFC : 0)
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| (not_NFKC_p ? not_NFKC : 0)
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| (maybe_not_NFC_p ? maybe_not_NFC : 0)
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);
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}
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if (ferror (f))
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fail ("reading DerivedNormalizationProps.txt");
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fclose (f);
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}
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/* Write out the table.
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The table consists of two words per entry. The first word is the flags
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for the unicode code points up to and including the second word. */
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static void
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write_table (void)
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{
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unsigned i;
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unsigned last_flag = flags[0];
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bool really_safe = decomp[0][0] == 0;
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unsigned char last_combine = combining_value[0];
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for (i = 1; i <= 65536; i++)
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if (i == 65536
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|| (flags[i] != last_flag && ((flags[i] | last_flag) & (C99 | CXX)))
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|| really_safe != (decomp[i][0] == 0)
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|| combining_value[i] != last_combine)
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{
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printf ("{ %s|%s|%s|%s|%s|%s|%s, %3d, %#06x },\n",
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last_flag & C99 ? "C99" : " 0",
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last_flag & digit ? "DIG" : " 0",
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last_flag & CXX ? "CXX" : " 0",
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really_safe ? "CID" : " 0",
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last_flag & not_NFC ? " 0" : "NFC",
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last_flag & not_NFKC ? " 0" : "NKC",
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last_flag & maybe_not_NFC ? "CTX" : " 0",
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combining_value[i - 1],
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i - 1);
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last_flag = flags[i];
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last_combine = combining_value[0];
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really_safe = decomp[i][0] == 0;
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}
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}
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/* Print out the huge copyright notice. */
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static void
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write_copyright (void)
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{
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static const char copyright[] = "\
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/* Unicode characters and various properties.\n\
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Copyright (C) 2003, 2005 Free Software Foundation, Inc.\n\
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\n\
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This program is free software; you can redistribute it and/or modify it\n\
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under the terms of the GNU General Public License as published by the\n\
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Free Software Foundation; either version 2, or (at your option) any\n\
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later version.\n\
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\n\
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This program is distributed in the hope that it will be useful,\n\
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but WITHOUT ANY WARRANTY; without even the implied warranty of\n\
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\
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GNU General Public License for more details.\n\
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\n\
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You should have received a copy of the GNU General Public License\n\
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along with this program; if not, write to the Free Software\n\
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Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.\n\
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\n\
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\n\
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Copyright (C) 1991-2005 Unicode, Inc. All rights reserved.\n\
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Distributed under the Terms of Use in\n\
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http://www.unicode.org/copyright.html.\n\
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\n\
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Permission is hereby granted, free of charge, to any person\n\
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obtaining a copy of the Unicode data files and any associated\n\
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documentation (the \"Data Files\") or Unicode software and any\n\
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associated documentation (the \"Software\") to deal in the Data Files\n\
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or Software without restriction, including without limitation the\n\
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rights to use, copy, modify, merge, publish, distribute, and/or\n\
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sell copies of the Data Files or Software, and to permit persons to\n\
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whom the Data Files or Software are furnished to do so, provided\n\
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that (a) the above copyright notice(s) and this permission notice\n\
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appear with all copies of the Data Files or Software, (b) both the\n\
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above copyright notice(s) and this permission notice appear in\n\
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associated documentation, and (c) there is clear notice in each\n\
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modified Data File or in the Software as well as in the\n\
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documentation associated with the Data File(s) or Software that the\n\
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data or software has been modified.\n\
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\n\
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THE DATA FILES AND SOFTWARE ARE PROVIDED \"AS IS\", WITHOUT WARRANTY\n\
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OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE\n\
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WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\n\
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NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE\n\
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COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR\n\
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ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY\n\
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DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,\n\
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS\n\
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ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE\n\
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OF THE DATA FILES OR SOFTWARE.\n\
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\n\
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Except as contained in this notice, the name of a copyright holder\n\
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shall not be used in advertising or otherwise to promote the sale,\n\
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use or other dealings in these Data Files or Software without prior\n\
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written authorization of the copyright holder. */\n";
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puts (copyright);
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}
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/* Main program. */
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int
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main(int argc, char ** argv)
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{
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if (argc != 4)
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fail ("too few arguments to makeucn");
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read_ucnid (argv[1]);
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read_table (argv[2]);
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read_derived (argv[3]);
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write_copyright ();
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write_table ();
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return 0;
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}
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