version 1.86, 2009/07/15 15:37:48 |
version 1.96, 2009/07/27 13:10:08 |
Line 31 extern int mdoc_run(struct termp *, |
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Line 31 extern int mdoc_run(struct termp *, |
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static struct termp *term_alloc(enum termenc); |
static struct termp *term_alloc(enum termenc); |
static void term_free(struct termp *); |
static void term_free(struct termp *); |
static void term_pescape(struct termp *, const char **); |
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static void term_nescape(struct termp *, |
static void do_escaped(struct termp *, const char **); |
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static void do_special(struct termp *, |
const char *, size_t); |
const char *, size_t); |
static void term_chara(struct termp *, char); |
static void do_reserved(struct termp *, |
static void term_encodea(struct termp *, char); |
const char *, size_t); |
static int term_isopendelim(const char *); |
static void buffer(struct termp *, char); |
static int term_isclosedelim(const char *); |
static void encode(struct termp *, char); |
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static int isopendelim(const char *); |
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static int isclosedelim(const char *); |
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void * |
void * |
Line 110 term_alloc(enum termenc enc) |
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Line 113 term_alloc(enum termenc enc) |
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static int |
static int |
term_isclosedelim(const char *p) |
isclosedelim(const char *p) |
{ |
{ |
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if ( ! (*p && 0 == *(p + 1))) |
if ( ! (*p && 0 == *(p + 1))) |
Line 144 term_isclosedelim(const char *p) |
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Line 147 term_isclosedelim(const char *p) |
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static int |
static int |
term_isopendelim(const char *p) |
isopendelim(const char *p) |
{ |
{ |
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if ( ! (*p && 0 == *(p + 1))) |
if ( ! (*p && 0 == *(p + 1))) |
Line 184 term_isopendelim(const char *p) |
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Line 187 term_isopendelim(const char *p) |
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* columns. In short: don't print a newline and instead pad to the |
* columns. In short: don't print a newline and instead pad to the |
* right margin. Used in conjunction with TERMP_NOLPAD. |
* right margin. Used in conjunction with TERMP_NOLPAD. |
* |
* |
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* - TERMP_TWOSPACE: when padding, make sure there are at least two |
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* space characters of padding. Otherwise, rather break the line. |
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* |
* - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and |
* - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and |
* the line is overrun, and don't pad-right if it's underrun. |
* the line is overrun, and don't pad-right if it's underrun. |
* |
* |
Line 202 term_isopendelim(const char *p) |
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Line 208 term_isopendelim(const char *p) |
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* Otherwise, the line will break at the right margin. Extremely long |
* Otherwise, the line will break at the right margin. Extremely long |
* lines will cause the system to emit a warning (TODO: hyphenate, if |
* lines will cause the system to emit a warning (TODO: hyphenate, if |
* possible). |
* possible). |
* |
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* FIXME: newline breaks occur (in groff) also occur when a single |
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* space follows a NOBREAK! |
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*/ |
*/ |
void |
void |
term_flushln(struct termp *p) |
term_flushln(struct termp *p) |
{ |
{ |
int i, j; |
int i, j; |
size_t vbl, vsz, vis, maxvis, mmax, bp; |
size_t vbl, vsz, vis, maxvis, mmax, bp; |
static int sv = -1; |
static int overstep = 0; |
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/* |
/* |
* First, establish the maximum columns of "visible" content. |
* First, establish the maximum columns of "visible" content. |
Line 221 term_flushln(struct termp *p) |
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Line 224 term_flushln(struct termp *p) |
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*/ |
*/ |
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assert(p->offset < p->rmargin); |
assert(p->offset < p->rmargin); |
maxvis = p->rmargin - p->offset; |
assert((int)(p->rmargin - p->offset) - overstep > 0); |
mmax = p->maxrmargin - p->offset; |
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maxvis = /* LINTED */ |
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p->rmargin - p->offset - overstep; |
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mmax = /* LINTED */ |
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p->maxrmargin - p->offset - overstep; |
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bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
vis = 0; |
vis = 0; |
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overstep = 0; |
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if (sv >= 0) { |
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vis = (size_t)sv; |
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sv = -1; |
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} |
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/* |
/* |
* If in the standard case (left-justified), then begin with our |
* If in the standard case (left-justified), then begin with our |
* indentation, otherwise (columns, etc.) just start spitting |
* indentation, otherwise (columns, etc.) just start spitting |
Line 252 term_flushln(struct termp *p) |
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Line 256 term_flushln(struct termp *p) |
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/* LINTED */ |
/* LINTED */ |
for (j = i, vsz = 0; j < (int)p->col; j++) { |
for (j = i, vsz = 0; j < (int)p->col; j++) { |
if (' ' == p->buf[j]) |
if (j && ' ' == p->buf[j]) |
break; |
break; |
else if (8 == p->buf[j]) |
else if (8 == p->buf[j]) |
j += 1; |
vsz--; |
else |
else |
vsz++; |
vsz++; |
} |
} |
Line 299 term_flushln(struct termp *p) |
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Line 303 term_flushln(struct termp *p) |
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} |
} |
vis += vsz; |
vis += vsz; |
} |
} |
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p->col = 0; |
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/* |
if ( ! (TERMP_NOBREAK & p->flags)) { |
* If we've overstepped our maximum visible no-break space, then |
putchar('\n'); |
* cause a newline and offset at the right margin. |
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*/ |
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if ((TERMP_NOBREAK & p->flags) && vis >= maxvis) { |
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if ( ! (TERMP_DANGLE & p->flags) && |
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! (TERMP_HANG & p->flags)) { |
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putchar('\n'); |
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for (i = 0; i < (int)p->rmargin; i++) |
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putchar(' '); |
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} |
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if (TERMP_HANG & p->flags) |
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sv = (int)(vis - maxvis); |
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p->col = 0; |
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return; |
return; |
} |
} |
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/* |
if (TERMP_HANG & p->flags) { |
* If we're not to right-marginalise it (newline), then instead |
/* We need one blank after the tag. */ |
* pad to the right margin and stay off. |
overstep = /* LINTED */ |
*/ |
vis - maxvis + 1; |
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if (p->flags & TERMP_NOBREAK) { |
/* |
if ( ! (TERMP_DANGLE & p->flags)) |
* Behave exactly the same way as groff: |
for ( ; vis < maxvis; vis++) |
* If we have overstepped the margin, temporarily move |
putchar(' '); |
* it to the right and flag the rest of the line to be |
} else |
* shorter. |
putchar('\n'); |
* If we landed right at the margin, be happy. |
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* If we are one step before the margin, temporarily |
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* move it one step LEFT and flag the rest of the line |
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* to be longer. |
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*/ |
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if (overstep >= -1) { |
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assert((int)maxvis + overstep >= 0); |
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/* LINTED */ |
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maxvis += overstep; |
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} else |
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overstep = 0; |
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p->col = 0; |
} else if (TERMP_DANGLE & p->flags) |
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return; |
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/* Right-pad. */ |
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if (maxvis > vis + /* LINTED */ |
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((TERMP_TWOSPACE & p->flags) ? 1 : 0)) |
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for ( ; vis < maxvis; vis++) |
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putchar(' '); |
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else { /* ...or newline break. */ |
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putchar('\n'); |
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for (i = 0; i < (int)p->rmargin; i++) |
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putchar(' '); |
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} |
} |
} |
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Line 368 term_vspace(struct termp *p) |
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Line 382 term_vspace(struct termp *p) |
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} |
} |
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/* |
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* Determine the symbol indicated by an escape sequences, that is, one |
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* starting with a backslash. Once done, we pass this value into the |
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* output buffer by way of the symbol table. |
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*/ |
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static void |
static void |
term_nescape(struct termp *p, const char *word, size_t len) |
do_special(struct termp *p, const char *word, size_t len) |
{ |
{ |
const char *rhs; |
const char *rhs; |
size_t sz; |
size_t sz; |
Line 382 term_nescape(struct termp *p, const char *word, size_t |
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Line 391 term_nescape(struct termp *p, const char *word, size_t |
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rhs = term_a2ascii(p->symtab, word, len, &sz); |
rhs = term_a2ascii(p->symtab, word, len, &sz); |
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if (rhs) |
if (NULL == rhs) { |
for (i = 0; i < (int)sz; i++) |
#if 1 |
term_encodea(p, rhs[i]); |
fputs("Unknown special character: ", stderr); |
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for (i = 0; i < (int)len; i++) |
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fputc(word[i], stderr); |
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fputc('\n', stderr); |
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#endif |
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return; |
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} |
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for (i = 0; i < (int)sz; i++) |
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encode(p, rhs[i]); |
} |
} |
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static void |
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do_reserved(struct termp *p, const char *word, size_t len) |
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{ |
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const char *rhs; |
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size_t sz; |
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int i; |
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rhs = term_a2res(p->symtab, word, len, &sz); |
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if (NULL == rhs) { |
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#if 0 |
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fputs("Unknown reserved word: ", stderr); |
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for (i = 0; i < (int)len; i++) |
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fputc(word[i], stderr); |
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fputc('\n', stderr); |
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#endif |
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return; |
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} |
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for (i = 0; i < (int)sz; i++) |
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encode(p, rhs[i]); |
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} |
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/* |
/* |
* Handle an escape sequence: determine its length and pass it to the |
* Handle an escape sequence: determine its length and pass it to the |
* escape-symbol look table. Note that we assume mdoc(3) has validated |
* escape-symbol look table. Note that we assume mdoc(3) has validated |
* the escape sequence (we assert upon badly-formed escape sequences). |
* the escape sequence (we assert upon badly-formed escape sequences). |
*/ |
*/ |
static void |
static void |
term_pescape(struct termp *p, const char **word) |
do_escaped(struct termp *p, const char **word) |
{ |
{ |
int j; |
int j; |
const char *wp; |
const char *wp; |
Line 413 term_pescape(struct termp *p, const char **word) |
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Line 453 term_pescape(struct termp *p, const char **word) |
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return; |
return; |
} |
} |
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term_nescape(p, wp, 2); |
do_special(p, wp, 2); |
*word = ++wp; |
*word = ++wp; |
return; |
return; |
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Line 431 term_pescape(struct termp *p, const char **word) |
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Line 471 term_pescape(struct termp *p, const char **word) |
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return; |
return; |
} |
} |
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term_nescape(p, wp, 2); |
do_reserved(p, wp, 2); |
*word = ++wp; |
*word = ++wp; |
return; |
return; |
case ('['): |
case ('['): |
break; |
break; |
default: |
default: |
term_nescape(p, wp, 1); |
do_reserved(p, wp, 1); |
*word = wp; |
*word = wp; |
return; |
return; |
} |
} |
Line 468 term_pescape(struct termp *p, const char **word) |
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Line 508 term_pescape(struct termp *p, const char **word) |
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return; |
return; |
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} else if ('[' != *wp) { |
} else if ('[' != *wp) { |
term_nescape(p, wp, 1); |
do_special(p, wp, 1); |
*word = wp; |
*word = wp; |
return; |
return; |
} |
} |
Line 482 term_pescape(struct termp *p, const char **word) |
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Line 522 term_pescape(struct termp *p, const char **word) |
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return; |
return; |
} |
} |
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term_nescape(p, wp - j, (size_t)j); |
do_special(p, wp - j, (size_t)j); |
*word = wp; |
*word = wp; |
} |
} |
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Line 495 term_pescape(struct termp *p, const char **word) |
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Line 535 term_pescape(struct termp *p, const char **word) |
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void |
void |
term_word(struct termp *p, const char *word) |
term_word(struct termp *p, const char *word) |
{ |
{ |
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const char *sv; |
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assert(*word); |
if (isclosedelim(word)) |
if (term_isclosedelim(word)) |
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if ( ! (TERMP_IGNDELIM & p->flags)) |
if ( ! (TERMP_IGNDELIM & p->flags)) |
p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
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if ( ! (TERMP_NOSPACE & p->flags)) |
if ( ! (TERMP_NOSPACE & p->flags)) |
term_chara(p, ' '); |
buffer(p, ' '); |
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if ( ! (p->flags & TERMP_NONOSPACE)) |
if ( ! (p->flags & TERMP_NONOSPACE)) |
p->flags &= ~TERMP_NOSPACE; |
p->flags &= ~TERMP_NOSPACE; |
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/* |
for (sv = word; *word; word++) |
* If ANSI (word-length styling), then apply our style now, |
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* before the word. |
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*/ |
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for ( ; *word; word++) |
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if ('\\' != *word) |
if ('\\' != *word) |
term_encodea(p, *word); |
encode(p, *word); |
else |
else |
term_pescape(p, &word); |
do_escaped(p, &word); |
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if (term_isopendelim(word)) |
if (isopendelim(sv)) |
p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
} |
} |
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Line 529 term_word(struct termp *p, const char *word) |
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Line 564 term_word(struct termp *p, const char *word) |
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* size. |
* size. |
*/ |
*/ |
static void |
static void |
term_chara(struct termp *p, char c) |
buffer(struct termp *p, char c) |
{ |
{ |
size_t s; |
size_t s; |
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Line 547 term_chara(struct termp *p, char c) |
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Line 582 term_chara(struct termp *p, char c) |
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static void |
static void |
term_encodea(struct termp *p, char c) |
encode(struct termp *p, char c) |
{ |
{ |
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if (TERMP_STYLE & p->flags) { |
if (' ' != c && TERMP_STYLE & p->flags) { |
if (TERMP_BOLD & p->flags) { |
if (TERMP_BOLD & p->flags) { |
term_chara(p, c); |
buffer(p, c); |
term_chara(p, 8); |
buffer(p, 8); |
} |
} |
if (TERMP_UNDER & p->flags) { |
if (TERMP_UNDER & p->flags) { |
term_chara(p, '_'); |
buffer(p, '_'); |
term_chara(p, 8); |
buffer(p, 8); |
} |
} |
} |
} |
term_chara(p, c); |
buffer(p, c); |
} |
} |