-/* $Id: term.c,v 1.181 2011/03/22 10:13:01 kristaps Exp $ */
+/* $Id: term.c,v 1.197 2011/05/24 21:31:23 kristaps Exp $ */
/*
* Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
#include "term.h"
#include "main.h"
-static void spec(struct termp *, enum roffdeco,
- const char *, size_t);
-static void res(struct termp *, const char *, size_t);
-static void bufferc(struct termp *, char);
-static void adjbuf(struct termp *p, size_t);
-static void encode(struct termp *, const char *, size_t);
-
+static void adjbuf(struct termp *p, int);
+static void bufferc(struct termp *, char);
+static void encode(struct termp *, const char *, size_t);
+static void encode1(struct termp *, int);
void
term_free(struct termp *p)
if (p->buf)
free(p->buf);
if (p->symtab)
- chars_free(p->symtab);
+ mchars_free(p->symtab);
free(p);
}
(*p->end)(p);
}
-
-struct termp *
-term_alloc(enum termenc enc)
-{
- struct termp *p;
-
- p = mandoc_calloc(1, sizeof(struct termp));
- p->enc = enc;
- return(p);
-}
-
-
/*
* Flush a line of text. A "line" is loosely defined as being something
* that should be followed by a newline, regardless of whether it's
vis = vend = 0;
i = 0;
- while (i < (int)p->col) {
+ while (i < p->col) {
/*
* Handle literal tab characters: collapse all
* subsequent tabs into a single huge set of spaces.
*/
- while (i < (int)p->col && '\t' == p->buf[i]) {
+ while (i < p->col && '\t' == p->buf[i]) {
vend = (vis / p->tabwidth + 1) * p->tabwidth;
vbl += vend - vis;
vis = vend;
* space is printed according to regular spacing rules).
*/
- for (j = i, jhy = 0; j < (int)p->col; j++) {
+ for (j = i, jhy = 0; j < p->col; j++) {
if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
break;
}
/* Write out the [remaining] word. */
- for ( ; i < (int)p->col; i++) {
+ for ( ; i < p->col; i++) {
if (vend > bp && jhy > 0 && i > jhy)
break;
if ('\t' == p->buf[i])
(*p->endline)(p);
}
-
-static void
-numbered(struct termp *p, const char *word, size_t len)
-{
- const char *rhs;
-
- rhs = chars_num2char(word, len);
- if (rhs)
- encode(p, rhs, 1);
-}
-
-
-static void
-spec(struct termp *p, enum roffdeco d, const char *word, size_t len)
-{
- const char *rhs;
- size_t sz;
-
- rhs = chars_spec2str(p->symtab, word, len, &sz);
- if (rhs)
- encode(p, rhs, sz);
- else if (DECO_SSPECIAL == d)
- encode(p, word, len);
-}
-
-
-static void
-res(struct termp *p, const char *word, size_t len)
-{
- const char *rhs;
- size_t sz;
-
- rhs = chars_res2str(p->symtab, word, len, &sz);
- if (rhs)
- encode(p, rhs, sz);
-}
-
-
void
term_fontlast(struct termp *p)
{
p->fonti--;
}
-
/*
* Handle pwords, partial words, which may be either a single word or a
* phrase that cannot be broken down (such as a literal string). This
void
term_word(struct termp *p, const char *word)
{
- const char *sv, *seq;
+ const char *seq, *cp;
+ char c;
+ int sz, uc;
size_t ssz;
- enum roffdeco deco;
-
- sv = word;
-
- if (DELIM_CLOSE == mandoc_isdelim(word))
- if ( ! (TERMP_IGNDELIM & p->flags))
- p->flags |= TERMP_NOSPACE;
+ enum mandoc_esc esc;
if ( ! (TERMP_NOSPACE & p->flags)) {
if ( ! (TERMP_KEEP & p->flags)) {
p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM);
- while (*word) {
+ while ('\0' != *word) {
if ((ssz = strcspn(word, "\\")) > 0)
encode(p, word, ssz);
if ('\\' != *word)
continue;
- seq = ++word;
- word += a2roffdeco(&deco, &seq, &ssz);
+ word++;
+ esc = mandoc_escape(&word, &seq, &sz);
+ if (ESCAPE_ERROR == esc)
+ break;
- switch (deco) {
- case (DECO_NUMBERED):
- numbered(p, seq, ssz);
+ if (TERMENC_ASCII != p->enc)
+ switch (esc) {
+ case (ESCAPE_UNICODE):
+ uc = mchars_num2uc(seq + 1, sz - 1);
+ if ('\0' == uc)
+ break;
+ encode1(p, uc);
+ continue;
+ case (ESCAPE_SPECIAL):
+ uc = mchars_spec2cp(p->symtab, seq, sz);
+ if (uc <= 0)
+ break;
+ encode1(p, uc);
+ continue;
+ default:
+ break;
+ }
+
+ switch (esc) {
+ case (ESCAPE_UNICODE):
+ encode1(p, '?');
break;
- case (DECO_RESERVED):
- res(p, seq, ssz);
+ case (ESCAPE_NUMBERED):
+ c = mchars_num2char(seq, sz);
+ if ('\0' != c)
+ encode(p, &c, 1);
break;
- case (DECO_SPECIAL):
- /* FALLTHROUGH */
- case (DECO_SSPECIAL):
- spec(p, deco, seq, ssz);
+ case (ESCAPE_SPECIAL):
+ cp = mchars_spec2str(p->symtab, seq, sz, &ssz);
+ if (NULL != cp)
+ encode(p, cp, ssz);
+ else if (1 == ssz)
+ encode(p, seq, sz);
break;
- case (DECO_BOLD):
+ case (ESCAPE_FONTBOLD):
term_fontrepl(p, TERMFONT_BOLD);
break;
- case (DECO_ITALIC):
+ case (ESCAPE_FONTITALIC):
term_fontrepl(p, TERMFONT_UNDER);
break;
- case (DECO_ROMAN):
+ case (ESCAPE_FONT):
+ /* FALLTHROUGH */
+ case (ESCAPE_FONTROMAN):
term_fontrepl(p, TERMFONT_NONE);
break;
- case (DECO_PREVIOUS):
+ case (ESCAPE_FONTPREV):
term_fontlast(p);
break;
+ case (ESCAPE_NOSPACE):
+ if ('\0' == *word)
+ p->flags |= TERMP_NOSPACE;
+ break;
default:
break;
}
-
- if (DECO_NOSPACE == deco && '\0' == *word)
- p->flags |= TERMP_NOSPACE;
}
-
- if (DELIM_OPEN == mandoc_isdelim(sv))
- p->flags |= TERMP_NOSPACE;
}
-
static void
-adjbuf(struct termp *p, size_t sz)
+adjbuf(struct termp *p, int sz)
{
if (0 == p->maxcols)
while (sz >= p->maxcols)
p->maxcols <<= 2;
- p->buf = mandoc_realloc(p->buf, p->maxcols);
+ p->buf = mandoc_realloc
+ (p->buf, sizeof(int) * (size_t)p->maxcols);
}
-
static void
bufferc(struct termp *p, char c)
{
if (p->col + 1 >= p->maxcols)
adjbuf(p, p->col + 1);
- p->buf[(int)p->col++] = c;
+ p->buf[p->col++] = c;
}
+/*
+ * See encode().
+ * Do this for a single (probably unicode) value.
+ * Does not check for non-decorated glyphs.
+ */
+static void
+encode1(struct termp *p, int c)
+{
+ enum termfont f;
+
+ if (p->col + 4 >= p->maxcols)
+ adjbuf(p, p->col + 4);
+
+ f = term_fonttop(p);
+
+ if (TERMFONT_NONE == f) {
+ p->buf[p->col++] = c;
+ return;
+ } else if (TERMFONT_UNDER == f) {
+ p->buf[p->col++] = '_';
+ } else
+ p->buf[p->col++] = c;
+
+ p->buf[p->col++] = 8;
+ p->buf[p->col++] = c;
+}
static void
encode(struct termp *p, const char *word, size_t sz)
{
enum termfont f;
- int i;
+ int i, len;
+
+ /* LINTED */
+ len = sz;
/*
* Encode and buffer a string of characters. If the current
*/
if (TERMFONT_NONE == (f = term_fonttop(p))) {
- if (p->col + sz >= p->maxcols)
- adjbuf(p, p->col + sz);
- memcpy(&p->buf[(int)p->col], word, sz);
- p->col += sz;
+ if (p->col + len >= p->maxcols)
+ adjbuf(p, p->col + len);
+ for (i = 0; i < len; i++)
+ p->buf[p->col++] = word[i];
return;
}
/* Pre-buffer, assuming worst-case. */
- if (p->col + 1 + (sz * 3) >= p->maxcols)
- adjbuf(p, p->col + 1 + (sz * 3));
+ if (p->col + 1 + (len * 3) >= p->maxcols)
+ adjbuf(p, p->col + 1 + (len * 3));
- for (i = 0; i < (int)sz; i++) {
- if ( ! isgraph((u_char)word[i])) {
- p->buf[(int)p->col++] = word[i];
+ for (i = 0; i < len; i++) {
+ if ( ! isgraph((unsigned char)word[i])) {
+ p->buf[p->col++] = word[i];
continue;
}
if (TERMFONT_UNDER == f)
- p->buf[(int)p->col++] = '_';
+ p->buf[p->col++] = '_';
else
- p->buf[(int)p->col++] = word[i];
+ p->buf[p->col++] = word[i];
- p->buf[(int)p->col++] = 8;
- p->buf[(int)p->col++] = word[i];
+ p->buf[p->col++] = 8;
+ p->buf[p->col++] = word[i];
}
}
-
size_t
term_len(const struct termp *p, size_t sz)
{
size_t
term_strlen(const struct termp *p, const char *cp)
{
- size_t sz, ssz, rsz, i;
- enum roffdeco d;
+ size_t sz, rsz, i;
+ int ssz, c;
const char *seq, *rhs;
+ enum mandoc_esc esc;
+ static const char rej[] = { '\\', ASCII_HYPH, ASCII_NBRSP, '\0' };
- for (sz = 0; '\0' != *cp; )
- /*
- * Account for escaped sequences within string length
- * calculations. This follows the logic in term_word()
- * as we must calculate the width of produced strings.
- */
- if ('\\' == *cp) {
- seq = ++cp;
- cp += a2roffdeco(&d, &seq, &ssz);
+ /*
+ * Account for escaped sequences within string length
+ * calculations. This follows the logic in term_word() as we
+ * must calculate the width of produced strings.
+ */
- switch (d) {
- case (DECO_RESERVED):
- rhs = chars_res2str
- (p->symtab, seq, ssz, &rsz);
+ sz = 0;
+ while ('\0' != *cp) {
+ rsz = strcspn(cp, rej);
+ for (i = 0; i < rsz; i++)
+ sz += (*p->width)(p, *cp++);
+
+ c = 0;
+ switch (*cp) {
+ case ('\\'):
+ cp++;
+ esc = mandoc_escape(&cp, &seq, &ssz);
+ if (ESCAPE_ERROR == esc)
+ return(sz);
+
+ if (TERMENC_ASCII != p->enc)
+ switch (esc) {
+ case (ESCAPE_UNICODE):
+ c = mchars_num2uc
+ (seq + 1, ssz - 1);
+ if ('\0' == c)
+ break;
+ sz += (*p->width)(p, c);
+ continue;
+ case (ESCAPE_SPECIAL):
+ c = mchars_spec2cp
+ (p->symtab, seq, ssz);
+ if (c <= 0)
+ break;
+ sz += (*p->width)(p, c);
+ continue;
+ default:
+ break;
+ }
+
+ rhs = NULL;
+
+ switch (esc) {
+ case (ESCAPE_UNICODE):
+ sz += (*p->width)(p, '?');
+ break;
+ case (ESCAPE_NUMBERED):
+ c = mchars_num2char(seq, ssz);
+ if ('\0' != c)
+ sz += (*p->width)(p, c);
break;
- case (DECO_SPECIAL):
- /* FALLTHROUGH */
- case (DECO_SSPECIAL):
- rhs = chars_spec2str
+ case (ESCAPE_SPECIAL):
+ rhs = mchars_spec2str
(p->symtab, seq, ssz, &rsz);
- /* Allow for one-char escapes. */
- if (DECO_SSPECIAL != d || rhs)
+ if (ssz != 1 || rhs)
break;
rhs = seq;
rsz = ssz;
break;
default:
- rhs = NULL;
break;
}
- if (rhs)
- for (i = 0; i < rsz; i++)
- sz += (*p->width)(p, *rhs++);
- } else if (ASCII_NBRSP == *cp) {
+ if (NULL == rhs)
+ break;
+
+ for (i = 0; i < rsz; i++)
+ sz += (*p->width)(p, *rhs++);
+ break;
+ case (ASCII_NBRSP):
sz += (*p->width)(p, ' ');
cp++;
- } else if (ASCII_HYPH == *cp) {
+ break;
+ case (ASCII_HYPH):
sz += (*p->width)(p, '-');
cp++;
- } else
- sz += (*p->width)(p, *cp++);
+ break;
+ default:
+ break;
+ }
+ }
return(sz);
}
-
/* ARGSUSED */
size_t
term_vspan(const struct termp *p, const struct roffsu *su)
r);
}
-
size_t
term_hspan(const struct termp *p, const struct roffsu *su)
{
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