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/* Originally this program just generated uudmap.h
However, when we later wanted to generate bitcount.h, it was easier to
refactor it and keep the same name, than either alternative - rename it,
or duplicate all of the Makefile logic for a second program. */
#define PERLIO_NOT_STDIO 0
#define PERL_REENTR_API 0
#define WIN32IO_IS_STDIO
#include "EXTERN.h"
#include "perl.h"
#ifdef WIN32
# undef strerror
#endif
static void
format_char_block(FILE *out, const void *thing, size_t count) {
const char *block = (const char *)thing;
fputs(" ", out);
while (count--) {
fprintf(out, "%d", *block);
block++;
if (count) {
fputs(", ", out);
if (!(count & 15)) {
fputs("\n ", out);
}
}
}
fputc('\n', out);
}
static void
output_to_file(const char *progname, const char *filename,
void (format_function)(FILE *out, const void *thing, size_t count),
const void *thing, size_t count) {
FILE *const out = fopen(filename, "w");
if (!out) {
fprintf(stderr, "%s: Could not open '%s': %s\n", progname, filename,
strerror(errno));
exit(1);
}
fputs("{\n", out);
format_function(out, thing, count);
fputs("}\n", out);
if (fclose(out)) {
fprintf(stderr, "%s: Could not close '%s': %s\n", progname, filename,
strerror(errno));
exit(1);
}
}
static const char my_uuemap[]
= "`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_";
/* This will ensure it is all zeros. */
static char my_uudmap[256];
static char my_bitcount[256];
int main(int argc, char **argv) {
size_t i;
int bits;
if (argc < 3 || argv[1][0] == '\0' || argv[2][0] == '\0') {
fprintf(stderr, "Usage: %s uudemap.h bitcount.h\n", argv[0]);
return 1;
}
for (i = 0; i < sizeof(my_uuemap) - 1; ++i)
my_uudmap[(U8)my_uuemap[i]] = (char)i;
/*
* Because ' ' and '`' map to the same value,
* we need to decode them both the same.
*/
my_uudmap[(U8)' '] = 0;
output_to_file(argv[0], argv[1], &format_char_block,
(const void *)my_uudmap, sizeof(my_uudmap));
for (bits = 1; bits < 256; bits++) {
if (bits & 1) my_bitcount[bits]++;
if (bits & 2) my_bitcount[bits]++;
if (bits & 4) my_bitcount[bits]++;
if (bits & 8) my_bitcount[bits]++;
if (bits & 16) my_bitcount[bits]++;
if (bits & 32) my_bitcount[bits]++;
if (bits & 64) my_bitcount[bits]++;
if (bits & 128) my_bitcount[bits]++;
}
output_to_file(argv[0], argv[2], &format_char_block,
(const void *)my_bitcount, sizeof(my_bitcount));
return 0;
}
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