Mercurial > repo
diff perl-5.22.2/generate_uudmap.c @ 8045:a16537d2fe07
<xfix> tar xf perl-5.22.2.tar.gz # Ah, whatever, I\'m doing it anyway
author | HackBot |
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date | Sat, 14 May 2016 14:54:38 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/perl-5.22.2/generate_uudmap.c Sat May 14 14:54:38 2016 +0000 @@ -0,0 +1,152 @@ +/* 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. */ + +#include <stdio.h> +#include <stdlib.h> +/* If it turns out that we need to make this conditional on config.sh derived + values, it might be easier just to rip out the use of strerrer(). */ +#include <string.h> +/* If a platform doesn't support errno.h, it's probably so strange that + "hello world" won't port easily to it. */ +#include <errno.h> + +struct mg_data_raw_t { + unsigned char type; + const char *value; + const char *comment; +}; + +static struct mg_data_raw_t mg_data_raw[] = { +#ifdef WIN32 +# include "..\mg_raw.h" +#else +# include "mg_raw.h" +#endif + {0, 0, 0} +}; + +struct mg_data_t { + const char *value; + const char *comment; +}; + +static struct mg_data_t mg_data[256]; + +static void +format_mg_data(FILE *out, const void *thing, size_t count) { + const struct mg_data_t *p = (const struct mg_data_t *)thing; + + while (1) { + if (p->value) { + fprintf(out, " %s\n %s", p->comment, p->value); + } else { + fputs(" 0", out); + } + ++p; + if (!--count) + break; + fputs(",\n", out); + } + fputc('\n', out); +} + +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 PL_uuemap[] += "`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; + +typedef unsigned char U8; + +/* This will ensure it is initialized to all zeros. */ +static char PL_uudmap[256]; +static char PL_bitcount[256]; + +int main(int argc, char **argv) { + size_t i; + int bits; + struct mg_data_raw_t *p = mg_data_raw; + + if (argc < 4 || argv[1][0] == '\0' || argv[2][0] == '\0' + || argv[3][0] == '\0') { + fprintf(stderr, "Usage: %s uudemap.h bitcount.h mg_data.h\n", argv[0]); + return 1; + } + + for (i = 0; i < sizeof(PL_uuemap) - 1; ++i) + PL_uudmap[(U8)PL_uuemap[i]] = (char)i; + /* + * Because ' ' and '`' map to the same value, + * we need to decode them both the same. + */ + PL_uudmap[(U8)' '] = 0; + + output_to_file(argv[0], argv[1], &format_char_block, + (const void *)PL_uudmap, sizeof(PL_uudmap)); + + for (bits = 1; bits < 256; bits++) { + if (bits & 1) PL_bitcount[bits]++; + if (bits & 2) PL_bitcount[bits]++; + if (bits & 4) PL_bitcount[bits]++; + if (bits & 8) PL_bitcount[bits]++; + if (bits & 16) PL_bitcount[bits]++; + if (bits & 32) PL_bitcount[bits]++; + if (bits & 64) PL_bitcount[bits]++; + if (bits & 128) PL_bitcount[bits]++; + } + + output_to_file(argv[0], argv[2], &format_char_block, + (const void *)PL_bitcount, sizeof(PL_bitcount)); + + while (p->value) { + mg_data[p->type].value = p->value; + mg_data[p->type].comment = p->comment; + ++p; + } + + output_to_file(argv[0], argv[3], &format_mg_data, + (const void *)mg_data, sizeof(mg_data)/sizeof(mg_data[0])); + + return 0; +}