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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
#include "gen/nametoucs_hash.h"
#define UCS_CNT 0x110000
const char *program;
void die(const char *msg)
{
fprintf(stderr, "%s: %s\n", program, msg);
exit(1);
}
static const char *int24str(int32_t n)
{
static char str[17];
sprintf(str, "{0x%02x,0x%02x,0x%02x}",
(n & 0xff),
((n >> 8) & 0xff),
((n >> 16) & 0xff));
return str;
}
static uint32_t prehash(const char *str)
{
uint32_t hash = PHASHSALT;
const uint8_t *p = (const uint8_t *)str;
while ( *p )
hash = (hash ^ *p++) + ((hash << 27)+(hash >> 5));
return hash;
}
static int32_t hash_to_ucs[PHASHNKEYS];
static void read_nametoucs_tab(void)
{
char line[256], *p;
FILE *f = fopen("gen/nametoucs.tab", "rt");
if ( !f )
die("could not open gen/nametoucs.tab");
int32_t ucs;
uint32_t hash;
int i;
for ( i = 0 ; i < PHASHNKEYS ; i++ )
hash_to_ucs[i] = -1;
while ( fgets(line, sizeof line, f) ) {
if ( (p = strchr(line, '\n')) )
*p = '\0';
ucs = strtol(line, NULL, 16);
hash = _libucd_nametoucs_hash(prehash(line+6));
if ( hash >= PHASHNKEYS )
die("hash not minimal");
if ( hash_to_ucs[hash] != -1 )
die("hash collision");
hash_to_ucs[hash] = ucs;
}
fclose(f);
}
static void make_nametoucs_tab(void)
{
FILE *f = fopen("gen/nametoucs_tab.c", "wt");
if ( !f )
die("could not create gen/nametoucs_tab.c");
int i;
int32_t ucs;
fprintf(f,
"#include \"libucd_int.h\"\n"
"const struct _libucd_nametoucs_tab _libucd_nametoucs_tab[] =\n"
"{\n");
for ( i = 0 ; i < PHASHNKEYS ; i++ ) {
ucs = hash_to_ucs[i];
fprintf(f, "\t{ %s },\n", int24str(ucs));
}
fprintf(f, "};\n");
fclose(f);
}
int main(void)
{
read_nametoucs_tab();
make_nametoucs_tab();
return 0;
}
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