version 1.92, 2009/07/23 08:35:22 |
version 1.128, 2010/01/01 17:14:30 |
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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 <sys/types.h> |
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#include <assert.h> |
#include <assert.h> |
#include <err.h> |
#include <ctype.h> |
#include <stdio.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
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#include <time.h> |
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#include "chars.h" |
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#include "out.h" |
#include "term.h" |
#include "term.h" |
#include "man.h" |
#include "man.h" |
#include "mdoc.h" |
#include "mdoc.h" |
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#include "main.h" |
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extern int man_run(struct termp *, |
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const struct man *); |
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extern int mdoc_run(struct termp *, |
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const struct mdoc *); |
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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 **); |
static void spec(struct termp *, const char *, size_t); |
static void term_nescape(struct termp *, |
static void res(struct termp *, const char *, size_t); |
const char *, size_t); |
static void buffera(struct termp *, const char *, size_t); |
static void term_chara(struct termp *, char); |
static void bufferc(struct termp *, char); |
static void term_encodea(struct termp *, char); |
static void adjbuf(struct termp *p, size_t); |
static int term_isopendelim(const char *); |
static void encode(struct termp *, const char *, size_t); |
static int term_isclosedelim(const char *); |
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void * |
void * |
Line 48 ascii_alloc(void) |
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Line 52 ascii_alloc(void) |
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} |
} |
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int |
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terminal_man(void *arg, const struct man *man) |
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{ |
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struct termp *p; |
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p = (struct termp *)arg; |
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if (NULL == p->symtab) |
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p->symtab = term_ascii2htab(); |
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return(man_run(p, man)); |
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} |
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int |
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terminal_mdoc(void *arg, const struct mdoc *mdoc) |
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{ |
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struct termp *p; |
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p = (struct termp *)arg; |
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if (NULL == p->symtab) |
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p->symtab = term_ascii2htab(); |
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return(mdoc_run(p, mdoc)); |
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} |
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void |
void |
terminal_free(void *arg) |
terminal_free(void *arg) |
{ |
{ |
Line 88 term_free(struct termp *p) |
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Line 66 term_free(struct termp *p) |
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if (p->buf) |
if (p->buf) |
free(p->buf); |
free(p->buf); |
if (TERMENC_ASCII == p->enc && p->symtab) |
if (p->symtab) |
term_asciifree(p->symtab); |
chars_free(p->symtab); |
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free(p); |
free(p); |
} |
} |
Line 100 term_alloc(enum termenc enc) |
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Line 78 term_alloc(enum termenc enc) |
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{ |
{ |
struct termp *p; |
struct termp *p; |
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if (NULL == (p = malloc(sizeof(struct termp)))) |
p = calloc(1, sizeof(struct termp)); |
err(1, "malloc"); |
if (NULL == p) { |
bzero(p, sizeof(struct termp)); |
perror(NULL); |
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exit(EXIT_FAILURE); |
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} |
p->maxrmargin = 78; |
p->maxrmargin = 78; |
p->enc = enc; |
p->enc = enc; |
return(p); |
return(p); |
} |
} |
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static int |
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term_isclosedelim(const char *p) |
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{ |
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if ( ! (*p && 0 == *(p + 1))) |
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return(0); |
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switch (*p) { |
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case('.'): |
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/* FALLTHROUGH */ |
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case(','): |
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/* FALLTHROUGH */ |
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case(';'): |
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/* FALLTHROUGH */ |
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case(':'): |
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/* FALLTHROUGH */ |
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case('?'): |
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/* FALLTHROUGH */ |
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case('!'): |
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/* FALLTHROUGH */ |
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case(')'): |
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/* FALLTHROUGH */ |
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case(']'): |
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/* FALLTHROUGH */ |
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case('}'): |
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return(1); |
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default: |
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break; |
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} |
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return(0); |
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} |
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static int |
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term_isopendelim(const char *p) |
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{ |
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if ( ! (*p && 0 == *(p + 1))) |
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return(0); |
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switch (*p) { |
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case('('): |
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/* FALLTHROUGH */ |
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case('['): |
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/* FALLTHROUGH */ |
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case('{'): |
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return(1); |
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default: |
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break; |
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} |
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return(0); |
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} |
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/* |
/* |
* Flush a line of text. A "line" is loosely defined as being something |
* 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 |
* that should be followed by a newline, regardless of whether it's |
Line 199 term_isopendelim(const char *p) |
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Line 123 term_isopendelim(const char *p) |
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* If TERMP_NOBREAK is specified and the line overruns the right |
* If TERMP_NOBREAK is specified and the line overruns the right |
* margin, it will break and pad-right to the right margin after |
* margin, it will break and pad-right to the right margin after |
* writing. If maxrmargin is violated, it will break and continue |
* writing. If maxrmargin is violated, it will break and continue |
* writing from the right-margin, which will lead to the above |
* writing from the right-margin, which will lead to the above scenario |
* scenario upon exit. |
* upon exit. Otherwise, the line will break at the right margin. |
* |
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* Otherwise, the line will break at the right margin. Extremely long |
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* lines will cause the system to emit a warning (TODO: hyphenate, if |
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* possible). |
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* |
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* FIXME: newline breaks occur (in groff) also occur when a single |
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* space follows a NOBREAK (try `Bl -tag') |
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* |
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* FIXME: there's a newline error where a `Bl -diag' will have a |
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* trailing newline if the line is exactly 73 chars long. |
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*/ |
*/ |
void |
void |
term_flushln(struct termp *p) |
term_flushln(struct termp *p) |
{ |
{ |
int i, j; |
int i; /* current input position in p->buf */ |
size_t vbl, vsz, vis, maxvis, mmax, bp; |
size_t vis; /* current visual position on output */ |
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size_t vbl; /* number of blanks to prepend to output */ |
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size_t vsz; /* visual characters to write to output */ |
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size_t bp; /* visual right border position */ |
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int j; /* temporary loop index */ |
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size_t maxvis, mmax; |
static int overstep = 0; |
static int overstep = 0; |
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/* |
/* |
* First, establish the maximum columns of "visible" content. |
* First, establish the maximum columns of "visible" content. |
* This is usually the difference between the right-margin and |
* This is usually the difference between the right-margin and |
* an indentation, but can be, for tagged lists or columns, a |
* an indentation, but can be, for tagged lists or columns, a |
* small set of values. |
* small set of values. |
*/ |
*/ |
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assert(p->offset < p->rmargin); |
assert(p->offset < p->rmargin); |
assert((int)(p->rmargin - p->offset) - overstep > 0); |
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maxvis = /* LINTED */ |
maxvis = (int)(p->rmargin - p->offset) - overstep < 0 ? |
p->rmargin - p->offset - overstep; |
/* LINTED */ |
mmax = /* LINTED */ |
0 : p->rmargin - p->offset - overstep; |
p->maxrmargin - p->offset - overstep; |
mmax = (int)(p->maxrmargin - p->offset) - overstep < 0 ? |
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/* LINTED */ |
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0 : p->maxrmargin - p->offset - overstep; |
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bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
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/* |
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* FIXME: if bp is zero, we still output the first word before |
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* breaking the line. |
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*/ |
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vis = 0; |
vis = 0; |
overstep = 0; |
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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 |
Line 259 term_flushln(struct termp *p) |
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Line 184 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]) |
vsz--; |
vsz--; |
Line 290 term_flushln(struct termp *p) |
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Line 215 term_flushln(struct termp *p) |
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putchar(' '); |
putchar(' '); |
vis = 0; |
vis = 0; |
} |
} |
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/* Remove the overstep width. */ |
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bp += (int)/* LINTED */ |
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overstep; |
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overstep = 0; |
} else { |
} else { |
for (j = 0; j < (int)vbl; j++) |
for (j = 0; j < (int)vbl; j++) |
putchar(' '); |
putchar(' '); |
Line 302 term_flushln(struct termp *p) |
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Line 231 term_flushln(struct termp *p) |
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for ( ; i < (int)p->col; i++) { |
for ( ; i < (int)p->col; i++) { |
if (' ' == p->buf[i]) |
if (' ' == p->buf[i]) |
break; |
break; |
putchar(p->buf[i]); |
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/* The unit sep. is a non-breaking space. */ |
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if (31 == p->buf[i]) |
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putchar(' '); |
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else |
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putchar(p->buf[i]); |
} |
} |
vis += vsz; |
vis += vsz; |
} |
} |
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p->col = 0; |
p->col = 0; |
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overstep = 0; |
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if ( ! (TERMP_NOBREAK & p->flags)) { |
if ( ! (TERMP_NOBREAK & p->flags)) { |
putchar('\n'); |
putchar('\n'); |
Line 385 term_vspace(struct termp *p) |
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Line 321 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) |
spec(struct termp *p, const char *word, size_t len) |
{ |
{ |
const char *rhs; |
const char *rhs; |
size_t sz; |
size_t sz; |
int i; |
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rhs = term_a2ascii(p->symtab, word, len, &sz); |
rhs = chars_a2ascii(p->symtab, word, len, &sz); |
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if (rhs) |
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encode(p, rhs, sz); |
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} |
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static void |
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res(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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rhs = chars_a2res(p->symtab, word, len, &sz); |
if (rhs) |
if (rhs) |
for (i = 0; i < (int)sz; i++) |
encode(p, rhs, sz); |
term_encodea(p, rhs[i]); |
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} |
} |
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/* |
void |
* Handle an escape sequence: determine its length and pass it to the |
term_fontlast(struct termp *p) |
* escape-symbol look table. Note that we assume mdoc(3) has validated |
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* the escape sequence (we assert upon badly-formed escape sequences). |
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*/ |
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static void |
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term_pescape(struct termp *p, const char **word) |
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{ |
{ |
int j; |
enum termfont f; |
const char *wp; |
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wp = *word; |
f = p->fontl; |
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p->fontl = p->fontq[p->fonti]; |
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p->fontq[p->fonti] = f; |
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} |
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if (0 == *(++wp)) { |
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*word = wp; |
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return; |
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} |
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if ('(' == *wp) { |
void |
wp++; |
term_fontrepl(struct termp *p, enum termfont f) |
if (0 == *wp || 0 == *(wp + 1)) { |
{ |
*word = 0 == *wp ? wp : wp + 1; |
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return; |
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} |
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term_nescape(p, wp, 2); |
p->fontl = p->fontq[p->fonti]; |
*word = ++wp; |
p->fontq[p->fonti] = f; |
return; |
} |
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} else if ('*' == *wp) { |
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if (0 == *(++wp)) { |
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*word = wp; |
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return; |
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} |
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switch (*wp) { |
void |
case ('('): |
term_fontpush(struct termp *p, enum termfont f) |
wp++; |
{ |
if (0 == *wp || 0 == *(wp + 1)) { |
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*word = 0 == *wp ? wp : wp + 1; |
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return; |
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} |
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term_nescape(p, wp, 2); |
assert(p->fonti + 1 < 10); |
*word = ++wp; |
p->fontl = p->fontq[p->fonti]; |
return; |
p->fontq[++p->fonti] = f; |
case ('['): |
} |
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const void * |
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term_fontq(struct termp *p) |
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{ |
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return(&p->fontq[p->fonti]); |
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} |
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enum termfont |
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term_fonttop(struct termp *p) |
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{ |
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return(p->fontq[p->fonti]); |
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} |
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void |
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term_fontpopq(struct termp *p, const void *key) |
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{ |
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while (p->fonti >= 0 && key != &p->fontq[p->fonti]) |
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p->fonti--; |
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assert(p->fonti >= 0); |
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} |
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void |
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term_fontpop(struct termp *p) |
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{ |
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assert(p->fonti); |
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p->fonti--; |
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} |
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/* |
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* Handle pwords, partial words, which may be either a single word or a |
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* phrase that cannot be broken down (such as a literal string). This |
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* handles word styling. |
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*/ |
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void |
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term_word(struct termp *p, const char *word) |
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{ |
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const char *sv, *seq; |
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int sz; |
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size_t ssz; |
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enum roffdeco deco; |
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sv = word; |
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if (word[0] && '\0' == word[1]) |
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switch (word[0]) { |
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case('.'): |
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/* FALLTHROUGH */ |
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case(','): |
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/* FALLTHROUGH */ |
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case(';'): |
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/* FALLTHROUGH */ |
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case(':'): |
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/* FALLTHROUGH */ |
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case('?'): |
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/* FALLTHROUGH */ |
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case('!'): |
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/* FALLTHROUGH */ |
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case(')'): |
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/* FALLTHROUGH */ |
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case(']'): |
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/* FALLTHROUGH */ |
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case('}'): |
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if ( ! (TERMP_IGNDELIM & p->flags)) |
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p->flags |= TERMP_NOSPACE; |
break; |
break; |
default: |
default: |
term_nescape(p, wp, 1); |
break; |
*word = wp; |
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return; |
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} |
} |
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} else if ('f' == *wp) { |
if ( ! (TERMP_NOSPACE & p->flags)) |
if (0 == *(++wp)) { |
bufferc(p, ' '); |
*word = wp; |
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return; |
if ( ! (p->flags & TERMP_NONOSPACE)) |
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p->flags &= ~TERMP_NOSPACE; |
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/* FIXME: use strcspn. */ |
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while (*word) { |
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if ('\\' != *word) { |
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encode(p, word, 1); |
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word++; |
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continue; |
} |
} |
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switch (*wp) { |
seq = ++word; |
case ('B'): |
sz = a2roffdeco(&deco, &seq, &ssz); |
p->flags |= TERMP_BOLD; |
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switch (deco) { |
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case (DECO_RESERVED): |
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res(p, seq, ssz); |
break; |
break; |
case ('I'): |
case (DECO_SPECIAL): |
p->flags |= TERMP_UNDER; |
spec(p, seq, ssz); |
break; |
break; |
case ('P'): |
case (DECO_BOLD): |
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term_fontrepl(p, TERMFONT_BOLD); |
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break; |
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case (DECO_ITALIC): |
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term_fontrepl(p, TERMFONT_UNDER); |
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break; |
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case (DECO_ROMAN): |
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term_fontrepl(p, TERMFONT_NONE); |
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break; |
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case (DECO_PREVIOUS): |
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term_fontlast(p); |
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break; |
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default: |
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break; |
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} |
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word += sz; |
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if (DECO_NOSPACE == deco && '\0' == *word) |
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p->flags |= TERMP_NOSPACE; |
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} |
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if (sv[0] && 0 == sv[1]) |
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switch (sv[0]) { |
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case('('): |
/* FALLTHROUGH */ |
/* FALLTHROUGH */ |
case ('R'): |
case('['): |
p->flags &= ~TERMP_STYLE; |
/* FALLTHROUGH */ |
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case('{'): |
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p->flags |= TERMP_NOSPACE; |
break; |
break; |
default: |
default: |
break; |
break; |
} |
} |
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} |
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*word = wp; |
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return; |
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} else if ('[' != *wp) { |
static void |
term_nescape(p, wp, 1); |
adjbuf(struct termp *p, size_t sz) |
*word = wp; |
{ |
return; |
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} |
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wp++; |
if (0 == p->maxcols) |
for (j = 0; *wp && ']' != *wp; wp++, j++) |
p->maxcols = 1024; |
/* Loop... */ ; |
while (sz >= p->maxcols) |
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p->maxcols <<= 2; |
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if (0 == *wp) { |
p->buf = realloc(p->buf, p->maxcols); |
*word = wp; |
if (NULL == p->buf) { |
return; |
perror(NULL); |
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exit(EXIT_FAILURE); |
} |
} |
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} |
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term_nescape(p, wp - j, (size_t)j); |
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*word = wp; |
static void |
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buffera(struct termp *p, const char *word, size_t sz) |
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{ |
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if (p->col + sz >= p->maxcols) |
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adjbuf(p, p->col + sz); |
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memcpy(&p->buf[(int)p->col], word, sz); |
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p->col += sz; |
} |
} |
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/* |
static void |
* Handle pwords, partial words, which may be either a single word or a |
bufferc(struct termp *p, char c) |
* phrase that cannot be broken down (such as a literal string). This |
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* handles word styling. |
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*/ |
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void |
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term_word(struct termp *p, const char *word) |
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{ |
{ |
const char *sv; |
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if (term_isclosedelim(word)) |
if (p->col + 1 >= p->maxcols) |
if ( ! (TERMP_IGNDELIM & p->flags)) |
adjbuf(p, p->col + 1); |
p->flags |= TERMP_NOSPACE; |
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if ( ! (TERMP_NOSPACE & p->flags)) |
p->buf[(int)p->col++] = c; |
term_chara(p, ' '); |
} |
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if ( ! (p->flags & TERMP_NONOSPACE)) |
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p->flags &= ~TERMP_NOSPACE; |
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|
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/* |
static void |
* If ANSI (word-length styling), then apply our style now, |
encode(struct termp *p, const char *word, size_t sz) |
* before the word. |
{ |
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enum termfont f; |
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int i; |
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/* |
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* Encode and buffer a string of characters. If the current |
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* font mode is unset, buffer directly, else encode then buffer |
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* character by character. |
*/ |
*/ |
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for (sv = word; *word; word++) |
if (TERMFONT_NONE == (f = term_fonttop(p))) { |
if ('\\' != *word) |
buffera(p, word, sz); |
term_encodea(p, *word); |
return; |
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} |
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for (i = 0; i < (int)sz; i++) { |
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if ( ! isgraph((u_char)word[i])) { |
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bufferc(p, word[i]); |
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continue; |
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} |
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if (TERMFONT_UNDER == f) |
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bufferc(p, '_'); |
else |
else |
term_pescape(p, &word); |
bufferc(p, word[i]); |
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if (term_isopendelim(sv)) |
bufferc(p, 8); |
p->flags |= TERMP_NOSPACE; |
bufferc(p, word[i]); |
|
} |
} |
} |
|
|
|
|
/* |
size_t |
* Insert a single character into the line-buffer. If the buffer's |
term_vspan(const struct roffsu *su) |
* space is exceeded, then allocate more space by doubling the buffer |
|
* size. |
|
*/ |
|
static void |
|
term_chara(struct termp *p, char c) |
|
{ |
{ |
size_t s; |
double r; |
|
|
if (p->col + 1 >= p->maxcols) { |
switch (su->unit) { |
if (0 == p->maxcols) |
case (SCALE_CM): |
p->maxcols = 256; |
r = su->scale * 2; |
s = p->maxcols * 2; |
break; |
p->buf = realloc(p->buf, s); |
case (SCALE_IN): |
if (NULL == p->buf) |
r = su->scale * 6; |
err(1, "realloc"); |
break; |
p->maxcols = s; |
case (SCALE_PC): |
|
r = su->scale; |
|
break; |
|
case (SCALE_PT): |
|
r = su->scale / 8; |
|
break; |
|
case (SCALE_MM): |
|
r = su->scale / 1000; |
|
break; |
|
case (SCALE_VS): |
|
r = su->scale; |
|
break; |
|
default: |
|
r = su->scale - 1; |
|
break; |
} |
} |
p->buf[(int)(p->col)++] = c; |
|
|
if (r < 0.0) |
|
r = 0.0; |
|
return(/* LINTED */(size_t) |
|
r); |
} |
} |
|
|
|
|
static void |
size_t |
term_encodea(struct termp *p, char c) |
term_hspan(const struct roffsu *su) |
{ |
{ |
|
double r; |
if (' ' != c && TERMP_STYLE & p->flags) { |
|
if (TERMP_BOLD & p->flags) { |
/* XXX: CM, IN, and PT are approximations. */ |
term_chara(p, c); |
|
term_chara(p, 8); |
switch (su->unit) { |
} |
case (SCALE_CM): |
if (TERMP_UNDER & p->flags) { |
r = 4 * su->scale; |
term_chara(p, '_'); |
break; |
term_chara(p, 8); |
case (SCALE_IN): |
} |
/* XXX: this is an approximation. */ |
|
r = 10 * su->scale; |
|
break; |
|
case (SCALE_PC): |
|
r = (10 * su->scale) / 6; |
|
break; |
|
case (SCALE_PT): |
|
r = (10 * su->scale) / 72; |
|
break; |
|
case (SCALE_MM): |
|
r = su->scale / 1000; /* FIXME: double-check. */ |
|
break; |
|
case (SCALE_VS): |
|
r = su->scale * 2 - 1; /* FIXME: double-check. */ |
|
break; |
|
default: |
|
r = su->scale; |
|
break; |
} |
} |
term_chara(p, c); |
|
|
if (r < 0.0) |
|
r = 0.0; |
|
return((size_t)/* LINTED */ |
|
r); |
} |
} |
|
|
|
|