244 lines
7.7 KiB
C
244 lines
7.7 KiB
C
/** Run with a `KJV` sub-directory,
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<https://github.com/scrollmapper/bible_databases/master/txt/KJV/>, outputs a
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`gperf` file that has all the the words of all the verses in `kjv.h` format.
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@license 2022 Neil Edelman, distributed under the terms of the
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[MIT License](https://opensource.org/licenses/MIT). Uses the KJV at
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[bible databases](https://github.com/scrollmapper/bible_databases/tree/master),
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"All included Bible translations are in the public domain."
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@std C11 */
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#include "../src/text.h"
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#define OMIT_VERSES
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#define OMIT_PROTO
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#include "../src/kjv.h" /* Just the base data. */
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#include "../src/helper.h"
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <dirent.h> /* opendir readdir closedir */
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#include <unistd.h> /* chdir (POSIX) (because I'm lazy) */
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/* #include <cmph.h> No; overkill. */
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void kjvcite_to_string(const union kjvcite x, char (*const a)[12])
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{ sprintf(*a, "%.4s%" PRIu32 ":%" PRIu32,
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kjv_book_string[x.book < KJV_BOOK_SIZE ? x.book : KJV_BOOK_SIZE],
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x.chapter % 1000, x.verse % 1000); }
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/* Reversible hash map. */
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/** <https://nullprogram.com/blog/2018/07/31/>
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<https://github.com/skeeto/hash-prospector> on `x`. */
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static uint32_t lowbias32(uint32_t x) {
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x ^= x >> 16;
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x *= 0x7feb352dU;
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x ^= x >> 15;
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x *= 0x846ca68bU;
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x ^= x >> 16;
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return x;
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}
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/* Inverts `x`. */
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static uint32_t lowbias32_r(uint32_t x) {
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x ^= x >> 16;
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x *= 0x43021123U;
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x ^= x >> 15 ^ x >> 30;
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x *= 0x1d69e2a5U;
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x ^= x >> 16;
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return x;
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}
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static uint32_t kjvset_hash(const union kjvcite x) { return lowbias32(x.u32); }
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static union kjvcite kjvset_unhash(const uint32_t x)
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{ union kjvcite k; k.u32 = lowbias32_r(x); return k; }
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static void kjvset_to_string(const union kjvcite x, char (*const a)[12])
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{ kjvcite_to_string(x, a); }
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#define TABLE_NAME kjvset
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#define TABLE_KEY union kjvcite
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#define TABLE_UINT uint32_t
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#define TABLE_INVERSE
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#define TABLE_TO_STRING
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#include "../src/table.h"
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/* Derived information on verse word count. */
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static uint32_t verse_hash(const union kjvcite x) { return kjvset_hash(x); }
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static union kjvcite verse_unhash(const uint32_t x) { return kjvset_unhash(x); }
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static void verse_to_string(const union kjvcite x, const unsigned count,
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char (*const a)[12]) { (void)count; kjvset_to_string(x, a); }
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#define TABLE_NAME verse
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#define TABLE_KEY union kjvcite
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#define TABLE_UINT uint32_t
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#define TABLE_VALUE unsigned /* Count words. */
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#define TABLE_INVERSE
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#define TABLE_DEFAULT 0
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#define TABLE_TO_STRING
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#include "../src/table.h"
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/* Parse filename of books. */
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/*!re2c /**/
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re2c:yyfill:enable = 0;
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re2c:define:YYCTYPE = char;
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natural = [1-9][0-9]*;
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whitespace = [ \t\v\f];
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word = [^ \t\v\f\n\x00]+;
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*/
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/** `fn` contains "<number>[*].txt", sticks that in `book_no`, otherwise
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returns false. */
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static int looks_like_book_fn(const char *fn, unsigned *const book_no) {
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const char *YYCURSOR = fn, *YYMARKER, *yyt1, *yyt2, *s0, *s1;
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assert(fn && book_no);
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/*!re2c /**/
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*
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{ return 0; }
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@s0 natural @s1 [^.\x00]* ".txt" "\x00"
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{ return helper_natural(s0, s1, book_no); }
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*/
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}
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/* This is the contents of the <fn:looks_like_book_fn>. */
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struct lex {
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size_t line;
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const char *cursor;
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int error;
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uint32_t chapter, verse, words;
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};
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static struct lex lex(const char *cursor) {
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struct lex lex;
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assert(cursor);
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lex.line = 1;
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lex.cursor = cursor;
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lex.error = 0;
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lex.chapter = lex.verse = lex.words = 0;
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return lex;
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}
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/*!conditions:re2c*/
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static int lex_next_verse(struct lex *const lex) {
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const char *YYMARKER, *yyt1 = 0, *yyt2 = 0, *s0, *s1, *t0, *t1;
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enum YYCONDTYPE condition = yycline;
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/*!re2c /**/
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re2c:define:YYCURSOR = lex->cursor;
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re2c:define:YYGETCONDITION = "condition";
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re2c:define:YYSETCONDITION = "condition = @@;";
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re2c:define:YYGETCONDITION:naked = 1;
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re2c:define:YYSETCONDITION:naked = 1; */
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assert(lex && lex->cursor);
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lex->error = 0;
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scan:
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/*!re2c /**/
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<*> * { return errno = EILSEQ, lex->error = 1, 0; }
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<line> [^[\]\n\x00]* "\n" { lex->line++; goto scan; }
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<line> "\x00" { return 0; }
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<line> "[" @s0 natural @s1 ":" @t0 natural @t1 "]" => verse {
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if(!helper_natural(s0, s1, &lex->chapter)
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|| !helper_natural(t0, t1, &lex->verse))
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return errno = EILSEQ, lex->error = 1, 0;
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lex->words = 0;
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/*printf("%u:%u", lex->chapter, lex->verse);*/
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goto scan;
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}
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<verse> whitespace+ { goto scan; }
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<verse> @s0 word @s1 { lex->words++; goto scan; }
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<verse> "\n" { /*printf(" -> %u\n", lex->words);*/ lex->line++; return 1; }
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*/
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}
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#define OMIT_BASE
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#define OMIT_VERSES
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#include "../src/kjv.h" /* Just the kjv and prototypes. */
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/** Frees `kjv`. */
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void kjv_(struct kjv *const kjv) {
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if(!kjv) return;
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kjvset_table_(&kjv->set);
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verse_table_(&kjv->verses);
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}
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/** Loads 66 files from the "kjv/" directory. Prints out something if it
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doesn't work, but does not call `perror` or reset `errno`. Use
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<fn:kjv_is_valid> to tell. */
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struct kjv kjv(void) {
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const char *const dir_kjv = "kjv";
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struct text backing = text();
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struct kjv kjv = { 0 };
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DIR *dir = 0;
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struct dirent *de = 0;
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struct { size_t offset; int is; } build[KJV_BOOK_SIZE] = { 0 };
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enum kjv_book b = 0;
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int is_in_kjv = 0;
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/* For all files in directory KJV with <#>*.txt, read into backing. */
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if(chdir(dir_kjv) == -1 || (is_in_kjv = 1, !(dir = opendir("."))))
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goto catch;
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while((de = readdir(dir))) {
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unsigned ordinal;
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char *unstable_backing;
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if(!looks_like_book_fn(de->d_name, &ordinal)) continue;
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/*fprintf(stderr, "<%s> ordinal: %u\n", de->d_name, ordinal);*/
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if(ordinal < 1 || ordinal > KJV_BOOK_SIZE)
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{ errno = ERANGE; goto catch; } /* Not in range. */
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if(build[b = ordinal - 1].is) /* Convert to zero-based. */
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{ errno = EDOM; goto catch; } /* Is duplicate. */
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if(!(unstable_backing = text_append_file(&backing, de->d_name)))
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goto catch;
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build[b].is = 1;
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build[b].offset = (size_t)(unstable_backing - backing.a.data);
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}
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if(closedir(dir) == -1) { dir = 0; goto catch; } dir = 0;
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/* Now backing is stable; count all the words for each verse. */
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for(b = 0; b < KJV_BOOK_SIZE; b++) {
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struct lex x;
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if(!build[b].is) { fprintf(stderr, "Missing book [%u]%s.\n",
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b + 1, kjv_book_string[b]); errno = EDOM; goto catch; }
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x = lex(backing.a.data + build[b].offset);
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while(lex_next_verse(&x)) {
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const union kjvcite cite
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= { .book = b, .chapter = x.chapter, .verse = x.verse };
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unsigned *words;
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switch(verse_table_assign(&kjv.verses, cite, &words)) {
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case TABLE_PRESENT: fprintf(stderr, "[%u]%s %u:%u duplicated.\n",
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b + 1, kjv_book_string[b], x.chapter, x.verse); errno = EDOM;
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case TABLE_ERROR: goto catch;
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case TABLE_ABSENT: break;
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}
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*words = x.words, kjv.total_words += x.words;
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}
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if(x.error) { fprintf(stderr, "[%u]%s on line %zu\n",
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b + 1, kjv_book_string[b], x.line); goto catch; }
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}
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goto finally;
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catch:
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if(de) fprintf(stderr, "While reading %s/%s.\n", dir_kjv, de->d_name);
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else fprintf(stderr, "In directory %s/.\n", dir_kjv);
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recatch:
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kjv_(&kjv);
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finally:
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if(dir) { if(closedir(dir)) { dir = 0; goto recatch; } dir = 0; }
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if(is_in_kjv && (is_in_kjv = 0, chdir("..") == -1)) goto recatch;
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text_(&backing);
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return kjv;
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}
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/** Has loaded properly? Otherwise, probably `errno` is set. */
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int kjv_is_valid(const struct kjv *const kjv)
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{ return kjv && kjv->verses.buckets; }
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/** Adds `cite` to `kjv` if not present. @return Is the kjv still valid. */
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int kjv_add(struct kjv *const kjv, const union kjvcite cite) {
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if(!kjv) return 0;
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switch(kjvset_table_try(&kjv->set, cite)) {
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case TABLE_ERROR: return 0;
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case TABLE_ABSENT: kjv->set_words += verse_table_get(&kjv->verses, cite);
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case TABLE_PRESENT: break;
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}
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return 1;
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}
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const char *kjv_to_string(const struct kjv *const kjv)
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{ return kjv ? verse_table_to_string(&kjv->verses) : ""; }
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const char *kjv_set_to_string(const struct kjv *const kjv)
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{ return kjv ? kjvset_table_to_string(&kjv->set) : 0; }
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