size_t
term_strlen(const struct termp *p, const char *cp)
{
size_t sz, rsz, i;
int ssz, skip, uc;
const char *seq, *rhs;
enum mandoc_esc esc;
static const char rej[] = { '\\', ASCII_NBRSP, ASCII_HYPH,
ASCII_BREAK, '\0' };
/*
* Account for escaped sequences within string length
* calculations. This follows the logic in term_word() as we
* must calculate the width of produced strings.
*/
sz = 0;
skip = 0;
while ('\0' != *cp) {
rsz = strcspn(cp, rej);
for (i = 0; i < rsz; i++)
sz += cond_width(p, *cp++, &skip);
switch (*cp) {
case '\\':
cp++;
esc = mandoc_escape(&cp, &seq, &ssz);
if (ESCAPE_ERROR == esc)
continue;
rhs = NULL;
switch (esc) {
case ESCAPE_UNICODE:
uc = mchars_num2uc(seq + 1, ssz - 1);
break;
case ESCAPE_NUMBERED:
uc = mchars_num2char(seq, ssz);
if (uc < 0)
continue;
break;
case ESCAPE_SPECIAL:
if (p->enc == TERMENC_ASCII) {
rhs = mchars_spec2str(p->symtab,
seq, ssz, &rsz);
if (rhs != NULL)
break;
} else {
uc = mchars_spec2cp(p->symtab,
seq, ssz);
if (uc > 0)
sz += cond_width(p, uc, &skip);
}
continue;
case ESCAPE_SKIPCHAR:
skip = 1;
continue;
case ESCAPE_OVERSTRIKE:
rsz = 0;
rhs = seq + ssz;
while (seq < rhs) {
if (*seq == '\\') {
mandoc_escape(&seq, NULL, NULL);
continue;
}
i = (*p->width)(p, *seq++);
if (rsz < i)
rsz = i;
}
sz += rsz;
continue;
default:
continue;
}
/*
* Common handling for Unicode and numbered
* character escape sequences.
*/
if (rhs == NULL) {
if (p->enc == TERMENC_ASCII) {
rhs = ascii_uc2str(uc);
rsz = strlen(rhs);
} else {
if ((uc < 0x20 && uc != 0x09) ||
(uc > 0x7E && uc < 0xA0))
uc = 0xFFFD;
sz += cond_width(p, uc, &skip);
continue;
}
}
if (skip) {
skip = 0;
break;
}
/*
* Common handling for all escape sequences
* printing more than one character.
*/
for (i = 0; i < rsz; i++)
sz += (*p->width)(p, *rhs++);
break;
case ASCII_NBRSP:
sz += cond_width(p, ' ', &skip);
cp++;
break;
case ASCII_HYPH:
sz += cond_width(p, '-', &skip);
cp++;
/* FALLTHROUGH */
case ASCII_BREAK:
break;
default:
break;
}
}
return(sz);
}
static int
print_encode(struct html *h, const char *p, int norecurse)
{
size_t sz;
int c, len, nospace;
const char *seq;
enum mandoc_esc esc;
static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
nospace = 0;
while ('\0' != *p) {
if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
h->flags &= ~HTML_SKIPCHAR;
p++;
continue;
}
sz = strcspn(p, rejs);
fwrite(p, 1, sz, stdout);
p += (int)sz;
if ('\0' == *p)
break;
switch (*p++) {
case ('<'):
printf("<");
continue;
case ('>'):
printf(">");
continue;
case ('&'):
printf("&");
continue;
case (ASCII_HYPH):
putchar('-');
continue;
default:
break;
}
esc = mandoc_escape(&p, &seq, &len);
if (ESCAPE_ERROR == esc)
break;
switch (esc) {
case (ESCAPE_FONT):
/* FALLTHROUGH */
case (ESCAPE_FONTPREV):
/* FALLTHROUGH */
case (ESCAPE_FONTBOLD):
/* FALLTHROUGH */
case (ESCAPE_FONTITALIC):
/* FALLTHROUGH */
case (ESCAPE_FONTBI):
/* FALLTHROUGH */
case (ESCAPE_FONTROMAN):
if (0 == norecurse)
print_metaf(h, esc);
continue;
case (ESCAPE_SKIPCHAR):
h->flags |= HTML_SKIPCHAR;
continue;
default:
break;
}
if (h->flags & HTML_SKIPCHAR) {
h->flags &= ~HTML_SKIPCHAR;
continue;
}
switch (esc) {
case (ESCAPE_UNICODE):
/* Skip passed "u" header. */
c = mchars_num2uc(seq + 1, len - 1);
if ('\0' != c)
printf("&#x%x;", c);
break;
case (ESCAPE_NUMBERED):
c = mchars_num2char(seq, len);
if ('\0' != c)
putchar(c);
break;
case (ESCAPE_SPECIAL):
c = mchars_spec2cp(h->symtab, seq, len);
if (c > 0)
printf("&#%d;", c);
else if (-1 == c && 1 == len)
putchar((int)*seq);
break;
case (ESCAPE_NOSPACE):
if ('\0' == *p)
nospace = 1;
break;
default:
break;
}
}
return(nospace);
}
/*
* 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
* handles word styling.
*/
void
term_word(struct termp *p, const char *word)
{
const char nbrsp[2] = { ASCII_NBRSP, 0 };
const char *seq, *cp;
int sz, uc;
size_t ssz;
enum mandoc_esc esc;
if ( ! (TERMP_NOSPACE & p->flags)) {
if ( ! (TERMP_KEEP & p->flags)) {
bufferc(p, ' ');
if (TERMP_SENTENCE & p->flags)
bufferc(p, ' ');
} else
bufferc(p, ASCII_NBRSP);
}
if (TERMP_PREKEEP & p->flags)
p->flags |= TERMP_KEEP;
if ( ! (p->flags & TERMP_NONOSPACE))
p->flags &= ~TERMP_NOSPACE;
else
p->flags |= TERMP_NOSPACE;
p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE);
p->skipvsp = 0;
while ('\0' != *word) {
if ('\\' != *word) {
if (TERMP_SKIPCHAR & p->flags) {
p->flags &= ~TERMP_SKIPCHAR;
word++;
continue;
}
if (TERMP_NBRWORD & p->flags) {
if (' ' == *word) {
encode(p, nbrsp, 1);
word++;
continue;
}
ssz = strcspn(word, "\\ ");
} else
ssz = strcspn(word, "\\");
encode(p, word, ssz);
word += (int)ssz;
continue;
}
word++;
esc = mandoc_escape(&word, &seq, &sz);
if (ESCAPE_ERROR == esc)
continue;
switch (esc) {
case ESCAPE_UNICODE:
uc = mchars_num2uc(seq + 1, sz - 1);
break;
case ESCAPE_NUMBERED:
uc = mchars_num2char(seq, sz);
if (uc < 0)
continue;
break;
case ESCAPE_SPECIAL:
if (p->enc == TERMENC_ASCII) {
cp = mchars_spec2str(p->symtab,
seq, sz, &ssz);
if (cp != NULL)
encode(p, cp, ssz);
} else {
uc = mchars_spec2cp(p->symtab, seq, sz);
if (uc > 0)
encode1(p, uc);
}
continue;
case ESCAPE_FONTBOLD:
term_fontrepl(p, TERMFONT_BOLD);
continue;
case ESCAPE_FONTITALIC:
term_fontrepl(p, TERMFONT_UNDER);
continue;
case ESCAPE_FONTBI:
term_fontrepl(p, TERMFONT_BI);
continue;
case ESCAPE_FONT:
/* FALLTHROUGH */
case ESCAPE_FONTROMAN:
term_fontrepl(p, TERMFONT_NONE);
continue;
case ESCAPE_FONTPREV:
term_fontlast(p);
continue;
case ESCAPE_NOSPACE:
if (TERMP_SKIPCHAR & p->flags)
p->flags &= ~TERMP_SKIPCHAR;
else if ('\0' == *word)
p->flags |= (TERMP_NOSPACE | TERMP_NONEWLINE);
continue;
case ESCAPE_SKIPCHAR:
p->flags |= TERMP_SKIPCHAR;
continue;
case ESCAPE_OVERSTRIKE:
cp = seq + sz;
while (seq < cp) {
if (*seq == '\\') {
mandoc_escape(&seq, NULL, NULL);
continue;
}
encode1(p, *seq++);
if (seq < cp)
encode(p, "\b", 1);
}
default:
continue;
}
/*
* Common handling for Unicode and numbered
* character escape sequences.
*/
if (p->enc == TERMENC_ASCII) {
cp = ascii_uc2str(uc);
encode(p, cp, strlen(cp));
} else {
if ((uc < 0x20 && uc != 0x09) ||
(uc > 0x7E && uc < 0xA0))
uc = 0xFFFD;
encode1(p, uc);
}
}
p->flags &= ~TERMP_NBRWORD;
}
static int
print_encode(struct html *h, const char *p, int norecurse)
{
size_t sz;
int c, len, nospace;
const char *seq;
enum mandoc_esc esc;
static const char rejs[9] = { '\\', '<', '>', '&', '"',
ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
nospace = 0;
while ('\0' != *p) {
if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
h->flags &= ~HTML_SKIPCHAR;
p++;
continue;
}
sz = strcspn(p, rejs);
fwrite(p, 1, sz, stdout);
p += (int)sz;
if ('\0' == *p)
break;
if (print_escape(*p++))
continue;
esc = mandoc_escape(&p, &seq, &len);
if (ESCAPE_ERROR == esc)
break;
switch (esc) {
case ESCAPE_FONT:
case ESCAPE_FONTPREV:
case ESCAPE_FONTBOLD:
case ESCAPE_FONTITALIC:
case ESCAPE_FONTBI:
case ESCAPE_FONTROMAN:
if (0 == norecurse)
print_metaf(h, esc);
continue;
case ESCAPE_SKIPCHAR:
h->flags |= HTML_SKIPCHAR;
continue;
default:
break;
}
if (h->flags & HTML_SKIPCHAR) {
h->flags &= ~HTML_SKIPCHAR;
continue;
}
switch (esc) {
case ESCAPE_UNICODE:
/* Skip past "u" header. */
c = mchars_num2uc(seq + 1, len - 1);
break;
case ESCAPE_NUMBERED:
c = mchars_num2char(seq, len);
if (c < 0)
continue;
break;
case ESCAPE_SPECIAL:
c = mchars_spec2cp(seq, len);
if (c <= 0)
continue;
break;
case ESCAPE_NOSPACE:
if ('\0' == *p)
nospace = 1;
continue;
case ESCAPE_OVERSTRIKE:
if (len == 0)
continue;
c = seq[len - 1];
break;
default:
continue;
}
if ((c < 0x20 && c != 0x09) ||
(c > 0x7E && c < 0xA0))
c = 0xFFFD;
if (c > 0x7E)
printf("&#%d;", c);
else if ( ! print_escape(c))
putchar(c);
}
return nospace;
}
size_t
term_strlen(const struct termp *p, const char *cp)
{
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' };
/*
* Account for escaped sequences within string length
* calculations. This follows the logic in term_word() as we
* must calculate the width of produced strings.
*/
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 (ESCAPE_SPECIAL):
rhs = mchars_spec2str
(p->symtab, seq, ssz, &rsz);
if (ssz != 1 || rhs)
break;
rhs = seq;
rsz = ssz;
break;
default:
break;
}
if (NULL == rhs)
break;
for (i = 0; i < rsz; i++)
sz += (*p->width)(p, *rhs++);
break;
case (ASCII_NBRSP):
sz += (*p->width)(p, ' ');
cp++;
break;
case (ASCII_HYPH):
sz += (*p->width)(p, '-');
cp++;
break;
default:
break;
}
}
return(sz);
}
/*
* 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
* handles word styling.
*/
void
term_word(struct termp *p, const char *word)
{
const char *seq, *cp;
char c;
int sz, uc;
size_t ssz;
enum mandoc_esc esc;
if ( ! (TERMP_NOSPACE & p->flags)) {
if ( ! (TERMP_KEEP & p->flags)) {
if (TERMP_PREKEEP & p->flags)
p->flags |= TERMP_KEEP;
bufferc(p, ' ');
if (TERMP_SENTENCE & p->flags)
bufferc(p, ' ');
} else
bufferc(p, ASCII_NBRSP);
}
if ( ! (p->flags & TERMP_NONOSPACE))
p->flags &= ~TERMP_NOSPACE;
else
p->flags |= TERMP_NOSPACE;
p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM);
while ('\0' != *word) {
if ((ssz = strcspn(word, "\\")) > 0)
encode(p, word, ssz);
word += (int)ssz;
if ('\\' != *word)
continue;
word++;
esc = mandoc_escape(&word, &seq, &sz);
if (ESCAPE_ERROR == esc)
break;
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 (ESCAPE_NUMBERED):
c = mchars_num2char(seq, sz);
if ('\0' != c)
encode(p, &c, 1);
break;
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 (ESCAPE_FONTBOLD):
term_fontrepl(p, TERMFONT_BOLD);
break;
case (ESCAPE_FONTITALIC):
term_fontrepl(p, TERMFONT_UNDER);
break;
case (ESCAPE_FONT):
/* FALLTHROUGH */
case (ESCAPE_FONTROMAN):
term_fontrepl(p, TERMFONT_NONE);
break;
case (ESCAPE_FONTPREV):
term_fontlast(p);
break;
case (ESCAPE_NOSPACE):
if ('\0' == *word)
p->flags |= TERMP_NOSPACE;
break;
default:
break;
}
}
}
/*
* Print text and mdoc(7) syntax elements.
*/
static void
md_word(const char *s)
{
const char *seq, *prevfont, *currfont, *nextfont;
char c;
int bs, sz, uc, breakline;
/* No spacing before closing delimiters. */
if (s[0] != '\0' && s[1] == '\0' &&
strchr("!),.:;?]", s[0]) != NULL &&
(outflags & MD_spc_force) == 0)
outflags &= ~MD_spc;
md_preword();
if (*s == '\0')
return;
/* No spacing after opening delimiters. */
if ((s[0] == '(' || s[0] == '[') && s[1] == '\0')
outflags &= ~MD_spc;
breakline = 0;
prevfont = currfont = "";
while ((c = *s++) != '\0') {
bs = 0;
switch(c) {
case ASCII_NBRSP:
if (code_blocks)
c = ' ';
else {
md_named("nbsp");
c = '\0';
}
break;
case ASCII_HYPH:
bs = escflags & ESC_BOL && !code_blocks;
c = '-';
break;
case ASCII_BREAK:
continue;
case '#':
case '+':
case '-':
bs = escflags & ESC_BOL && !code_blocks;
break;
case '(':
bs = escflags & ESC_HYP && !code_blocks;
break;
case ')':
bs = escflags & ESC_NUM && !code_blocks;
break;
case '*':
case '[':
case '_':
case '`':
bs = !code_blocks;
break;
case '.':
bs = escflags & ESC_NUM && !code_blocks;
break;
case '<':
if (code_blocks == 0) {
md_named("lt");
c = '\0';
}
break;
case '=':
if (escflags & ESC_BOL && !code_blocks) {
md_named("equals");
c = '\0';
}
break;
case '>':
if (code_blocks == 0) {
md_named("gt");
c = '\0';
}
break;
case '\\':
uc = 0;
nextfont = NULL;
switch (mandoc_escape(&s, &seq, &sz)) {
case ESCAPE_UNICODE:
uc = mchars_num2uc(seq + 1, sz - 1);
break;
case ESCAPE_NUMBERED:
uc = mchars_num2char(seq, sz);
break;
case ESCAPE_SPECIAL:
uc = mchars_spec2cp(seq, sz);
break;
case ESCAPE_FONTBOLD:
nextfont = "**";
break;
case ESCAPE_FONTITALIC:
nextfont = "*";
break;
case ESCAPE_FONTBI:
nextfont = "***";
break;
case ESCAPE_FONT:
case ESCAPE_FONTROMAN:
nextfont = "";
break;
case ESCAPE_FONTPREV:
nextfont = prevfont;
break;
case ESCAPE_BREAK:
breakline = 1;
break;
case ESCAPE_NOSPACE:
case ESCAPE_SKIPCHAR:
case ESCAPE_OVERSTRIKE:
/* XXX not implemented */
/* FALLTHROUGH */
case ESCAPE_ERROR:
default:
break;
}
if (nextfont != NULL && !code_blocks) {
if (*currfont != '\0') {
outflags &= ~MD_spc;
md_rawword(currfont);
}
prevfont = currfont;
currfont = nextfont;
if (*currfont != '\0') {
outflags &= ~MD_spc;
md_rawword(currfont);
}
}
if (uc) {
if ((uc < 0x20 && uc != 0x09) ||
(uc > 0x7E && uc < 0xA0))
uc = 0xFFFD;
if (code_blocks) {
seq = mchars_uc2str(uc);
fputs(seq, stdout);
outcount += strlen(seq);
} else {
printf("&#%d;", uc);
outcount++;
}
escflags &= ~ESC_FON;
}
c = '\0';
break;
case ']':
bs = escflags & ESC_SQU && !code_blocks;
escflags |= ESC_HYP;
break;
default:
break;
}
if (bs)
putchar('\\');
md_char(c);
if (breakline &&
(*s == '\0' || *s == ' ' || *s == ASCII_NBRSP)) {
printf(" \n");
breakline = 0;
while (*s == ' ' || *s == ASCII_NBRSP)
s++;
}
}
if (*currfont != '\0') {
outflags &= ~MD_spc;
md_rawword(currfont);
} else if (s[-2] == ' ')
escflags |= ESC_EOL;
else
escflags &= ~ESC_EOL;
}
