1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Create arrays for initializing the kernel folded tables (using a hash
6 * table turned out to be to limiting...) Unfortunately we can't simply
7 * preinitialize the tables at compile time since kfree() cannot accept
8 * memory not allocated by kmalloc(), and doing our own memory management
9 * just for this seems like massive overkill.
11 * Copyright (C) 1995-1997 H. Peter Anvin
20 #define MAX_FONTLEN 256
22 typedef unsigned short unicode;
24 static void usage(char *argv0)
26 fprintf(stderr, "Usage: \n"
27 " %s chartable [hashsize] [hashstep] [maxhashlevel]\n", argv0);
31 static int getunicode(char **p0)
35 while (*p == ' ' || *p == '\t')
37 if (*p != 'U' || p[1] != '+' ||
38 !isxdigit(p[2]) || !isxdigit(p[3]) || !isxdigit(p[4]) ||
39 !isxdigit(p[5]) || isxdigit(p[6]))
42 return strtol(p+2,0,16);
45 unicode unitable[MAX_FONTLEN][255];
46 /* Massive overkill, but who cares? */
47 int unicount[MAX_FONTLEN];
49 static void addpair(int fp, int un)
55 /* Check it isn't a duplicate */
57 for ( i = 0 ; i < unicount[fp] ; i++ )
58 if ( unitable[fp][i] == un )
63 if ( unicount[fp] > 254 )
65 fprintf(stderr, "ERROR: Only 255 unicodes/glyph permitted!\n");
69 unitable[fp][unicount[fp]] = un;
73 /* otherwise: ignore */
76 int main(int argc, char *argv[])
83 int fp0, fp1, un0, un1;
86 if ( argc < 2 || argc > 5 )
89 if ( !strcmp(argv[1],"-") )
96 ctbl = fopen(tblname = argv[1], "r");
104 /* For now we assume the default font is always 256 characters. */
107 /* Initialize table */
109 for ( i = 0 ; i < fontlen ; i++ )
112 /* Now we come to the tricky part. Parse the input table. */
114 while ( fgets(buffer, sizeof(buffer), ctbl) != NULL )
116 if ( (p = strchr(buffer, '\n')) != NULL )
119 fprintf(stderr, "%s: Warning: line too long\n", tblname);
125 * <fontpos> <unicode> <unicode> ...
127 * <range> <unicode range>
129 * where <range> ::= <fontpos>-<fontpos>
130 * and <unicode> ::= U+<h><h><h><h>
131 * and <h> ::= <hexadecimal digit>
134 while (*p == ' ' || *p == '\t')
136 if (!*p || *p == '#')
137 continue; /* skip comment or blank line */
139 fp0 = strtol(p, &p1, 0);
142 fprintf(stderr, "Bad input line: %s\n", buffer);
147 while (*p == ' ' || *p == '\t')
152 fp1 = strtol(p, &p1, 0);
155 fprintf(stderr, "Bad input line: %s\n", buffer);
163 if ( fp0 < 0 || fp0 >= fontlen )
166 "%s: Glyph number (0x%x) larger than font length\n",
170 if ( fp1 && (fp1 < fp0 || fp1 >= fontlen) )
173 "%s: Bad end of range (0x%x)\n",
180 /* we have a range; expect the word "idem" or a Unicode range of the
182 while (*p == ' ' || *p == '\t')
184 if (!strncmp(p, "idem", 4))
186 for (i=fp0; i<=fp1; i++)
192 un0 = getunicode(&p);
193 while (*p == ' ' || *p == '\t')
198 "%s: Corresponding to a range of font positions, there should be a Unicode range\n",
203 un1 = getunicode(&p);
204 if (un0 < 0 || un1 < 0)
207 "%s: Bad Unicode range corresponding to font position range 0x%x-0x%x\n",
211 if (un1 - un0 != fp1 - fp0)
214 "%s: Unicode range U+%x-U+%x not of the same length as font position range 0x%x-0x%x\n",
215 tblname, un0, un1, fp0, fp1);
218 for(i=fp0; i<=fp1; i++)
219 addpair(i,un0-fp0+i);
224 /* no range; expect a list of unicode values for a single font position */
226 while ( (un0 = getunicode(&p)) >= 0 )
229 while (*p == ' ' || *p == '\t')
232 fprintf(stderr, "%s: trailing junk (%s) ignored\n", tblname, p);
235 /* Okay, we hit EOF, now output hash table */
240 /* Compute total size of Unicode list */
242 for ( i = 0 ; i < fontlen ; i++ )
247 * Do not edit this file; it was automatically generated by\n\
249 * conmakehash %s > [this file]\n\
253 #include <linux/types.h>\n\
255 u8 dfont_unicount[%d] = \n\
256 {\n\t", argv[1], fontlen);
258 for ( i = 0 ; i < fontlen ; i++ )
260 printf("%3d", unicount[i]);
261 if ( i == fontlen-1 )
263 else if ( i % 8 == 7 )
269 printf("\nu16 dfont_unitable[%d] = \n{\n\t", nuni);
273 for ( i = 0 ; i < nuni ; i++ )
275 while ( nent >= unicount[fp0] )
280 printf("0x%04x", unitable[fp0][nent++]);
283 else if ( i % 8 == 7 )