version 1.11, 2009/10/31 06:10:57 |
version 1.50, 2011/07/31 11:24:39 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se> |
* Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv> |
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* Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org> |
* |
* |
* Permission to use, copy, modify, and distribute this software for any |
* Permission to use, copy, modify, and distribute this software for any |
* purpose with or without fee is hereby granted, provided that the above |
* purpose with or without fee is hereby granted, provided that the above |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
*/ |
*/ |
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include <assert.h> |
#include <assert.h> |
#include <stdio.h> |
#include <ctype.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
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#include "chars.h" |
#include "mandoc.h" |
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#include "libmandoc.h" |
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#define PRINT_HI 126 |
#define PRINT_HI 126 |
#define PRINT_LO 32 |
#define PRINT_LO 32 |
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struct ln *next; |
struct ln *next; |
const char *code; |
const char *code; |
const char *ascii; |
const char *ascii; |
const char *html; |
int unicode; |
size_t codesz; |
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size_t asciisz; |
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size_t htmlsz; |
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int type; |
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#define CHARS_CHAR (1 << 0) |
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#define CHARS_STRING (1 << 1) |
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#define CHARS_BOTH (0x03) |
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}; |
}; |
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#define LINES_MAX 351 |
#define LINES_MAX 328 |
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#define CHAR(w, x, y, z, a, b) \ |
#define CHAR(in, ch, code) \ |
{ NULL, (w), (y), (a), (x), (z), (b), CHARS_CHAR }, |
{ NULL, (in), (ch), (code) }, |
#define STRING(w, x, y, z, a, b) \ |
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{ NULL, (w), (y), (a), (x), (z), (b), CHARS_STRING }, |
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#define BOTH(w, x, y, z, a, b) \ |
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{ NULL, (w), (y), (a), (x), (z), (b), CHARS_BOTH }, |
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static struct ln lines[LINES_MAX] = { |
#define CHAR_TBL_START static struct ln lines[LINES_MAX] = { |
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#define CHAR_TBL_END }; |
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#include "chars.in" |
#include "chars.in" |
}; |
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struct tbl { |
struct mchars { |
enum chars type; |
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struct ln **htab; |
struct ln **htab; |
}; |
}; |
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static inline int match(const struct ln *, |
static const struct ln *find(struct mchars *, const char *, size_t); |
const char *, size_t, int); |
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static const char *find(struct tbl *, const char *, |
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size_t, size_t *, int); |
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void |
void |
chars_free(void *arg) |
mchars_free(struct mchars *arg) |
{ |
{ |
struct tbl *tab; |
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tab = (struct tbl *)arg; |
free(arg->htab); |
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free(arg); |
free(tab->htab); |
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free(tab); |
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} |
} |
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struct mchars * |
void * |
mchars_alloc(void) |
chars_init(enum chars type) |
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{ |
{ |
struct tbl *tab; |
struct mchars *tab; |
struct ln **htab; |
struct ln **htab; |
struct ln *pp; |
struct ln *pp; |
int i, hash; |
int i, hash; |
Line 85 chars_init(enum chars type) |
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Line 72 chars_init(enum chars type) |
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/* |
/* |
* Constructs a very basic chaining hashtable. The hash routine |
* Constructs a very basic chaining hashtable. The hash routine |
* is simply the integral value of the first character. |
* is simply the integral value of the first character. |
* Subsequent entries are chained in the order they're processed |
* Subsequent entries are chained in the order they're processed. |
* (they're in-line re-ordered during lookup). |
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*/ |
*/ |
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tab = malloc(sizeof(struct tbl)); |
tab = mandoc_malloc(sizeof(struct mchars)); |
if (NULL == tab) { |
htab = mandoc_calloc(PRINT_HI - PRINT_LO + 1, sizeof(struct ln **)); |
perror(NULL); |
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exit(EXIT_FAILURE); |
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} |
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htab = calloc(PRINT_HI - PRINT_LO + 1, sizeof(struct ln **)); |
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if (NULL == htab) { |
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perror(NULL); |
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exit(EXIT_FAILURE); |
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} |
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for (i = 0; i < LINES_MAX; i++) { |
for (i = 0; i < LINES_MAX; i++) { |
hash = (int)lines[i].code[0] - PRINT_LO; |
hash = (int)lines[i].code[0] - PRINT_LO; |
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Line 115 chars_init(enum chars type) |
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Line 92 chars_init(enum chars type) |
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} |
} |
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tab->htab = htab; |
tab->htab = htab; |
tab->type = type; |
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return(tab); |
return(tab); |
} |
} |
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int |
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mchars_spec2cp(struct mchars *arg, const char *p, size_t sz) |
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{ |
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const struct ln *ln; |
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const char * |
ln = find(arg, p, sz); |
chars_a2ascii(void *arg, const char *p, size_t sz, size_t *rsz) |
if (NULL == ln) |
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return(-1); |
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return(ln->unicode); |
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} |
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char |
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mchars_num2char(const char *p, size_t sz) |
{ |
{ |
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int i; |
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return(find((struct tbl *)arg, p, sz, rsz, CHARS_CHAR)); |
if ((i = mandoc_strntoi(p, sz, 10)) < 0) |
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return('\0'); |
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return(i > 0 && i < 256 && isprint(i) ? i : '\0'); |
} |
} |
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int |
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mchars_num2uc(const char *p, size_t sz) |
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{ |
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int i; |
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if ((i = mandoc_strntoi(p, sz, 16)) < 0) |
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return('\0'); |
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/* FIXME: make sure we're not in a bogus range. */ |
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return(i > 0x80 && i <= 0x10FFFF ? i : '\0'); |
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} |
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const char * |
const char * |
chars_a2res(void *arg, const char *p, size_t sz, size_t *rsz) |
mchars_spec2str(struct mchars *arg, const char *p, size_t sz, size_t *rsz) |
{ |
{ |
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const struct ln *ln; |
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return(find((struct tbl *)arg, p, sz, rsz, CHARS_STRING)); |
ln = find(arg, p, sz); |
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if (NULL == ln) { |
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*rsz = 1; |
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return(NULL); |
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} |
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*rsz = strlen(ln->ascii); |
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return(ln->ascii); |
} |
} |
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static const struct ln * |
static const char * |
find(struct mchars *tab, const char *p, size_t sz) |
find(struct tbl *tab, const char *p, size_t sz, size_t *rsz, int type) |
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{ |
{ |
struct ln *pp, *prev; |
struct ln *pp; |
struct ln **htab; |
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int hash; |
int hash; |
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assert(p); |
assert(p); |
assert(sz > 0); |
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if (p[0] < PRINT_LO || p[0] > PRINT_HI) |
if (0 == sz || p[0] < PRINT_LO || p[0] > PRINT_HI) |
return(NULL); |
return(NULL); |
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/* |
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* Lookup the symbol in the symbol hash. See ascii2htab for the |
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* hashtable specs. This dynamically re-orders the hash chain |
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* to optimise for repeat hits. |
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*/ |
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hash = (int)p[0] - PRINT_LO; |
hash = (int)p[0] - PRINT_LO; |
htab = tab->htab; |
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if (NULL == (pp = htab[hash])) |
for (pp = tab->htab[hash]; pp; pp = pp->next) |
return(NULL); |
if (0 == strncmp(pp->code, p, sz) && |
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'\0' == pp->code[(int)sz]) |
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return(pp); |
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if (NULL == pp->next) { |
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if ( ! match(pp, p, sz, type)) |
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return(NULL); |
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if (CHARS_HTML == tab->type) { |
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*rsz = pp->htmlsz; |
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return(pp->html); |
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} |
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*rsz = pp->asciisz; |
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return(pp->ascii); |
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} |
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for (prev = NULL; pp; pp = pp->next) { |
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if ( ! match(pp, p, sz, type)) { |
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prev = pp; |
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continue; |
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} |
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if (prev) { |
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prev->next = pp->next; |
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pp->next = htab[hash]; |
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htab[hash] = pp; |
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} |
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if (CHARS_HTML == tab->type) { |
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*rsz = pp->htmlsz; |
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return(pp->html); |
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} |
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*rsz = pp->asciisz; |
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return(pp->ascii); |
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} |
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return(NULL); |
return(NULL); |
} |
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static inline int |
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match(const struct ln *ln, const char *p, size_t sz, int type) |
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{ |
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if ( ! (ln->type & type)) |
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return(0); |
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if (ln->codesz != sz) |
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return(0); |
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return(0 == strncmp(ln->code, p, sz)); |
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} |
} |