version 1.93, 2009/07/24 11:54:25 |
version 1.110, 2009/10/24 06:19:34 |
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#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.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 *, |
/* FIXME: accomodate non-breaking, non-collapsing white-space. */ |
const struct man *); |
/* FIXME: accomodate non-breaking, collapsing white-space. */ |
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 **); |
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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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void * |
void * |
Line 48 ascii_alloc(void) |
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Line 50 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 64 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 101 term_alloc(enum termenc enc) |
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Line 77 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)))) |
if (NULL == (p = malloc(sizeof(struct termp)))) |
err(1, "malloc"); |
return(NULL); |
bzero(p, sizeof(struct termp)); |
bzero(p, sizeof(struct termp)); |
p->maxrmargin = 78; |
p->maxrmargin = 78; |
p->enc = enc; |
p->enc = enc; |
Line 109 term_alloc(enum termenc enc) |
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Line 85 term_alloc(enum termenc enc) |
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} |
} |
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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 205 term_isopendelim(const char *p) |
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Line 125 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 (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) |
Line 236 term_flushln(struct termp *p) |
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Line 150 term_flushln(struct termp *p) |
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bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; |
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 290 term_flushln(struct termp *p) |
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Line 203 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 += 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 313 term_flushln(struct termp *p) |
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Line 229 term_flushln(struct termp *p) |
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return; |
return; |
} |
} |
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overstep = 0; |
if (TERMP_HANG & p->flags) { |
if (TERMP_HANG & p->flags) { |
/* We need one blank after the tag. */ |
/* We need one blank after the tag. */ |
overstep = /* LINTED */ |
overstep = /* LINTED */ |
Line 385 term_vspace(struct termp *p) |
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Line 302 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; |
int i; |
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) |
if (NULL == rhs) { |
for (i = 0; i < (int)sz; i++) |
#if 0 |
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 = chars_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, type; |
const char *wp; |
const char *wp; |
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wp = *word; |
wp = *word; |
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type = 1; |
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if (0 == *(++wp)) { |
if (0 == *(++wp)) { |
*word = wp; |
*word = wp; |
Line 430 term_pescape(struct termp *p, const char **word) |
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Line 374 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 448 term_pescape(struct termp *p, const char **word) |
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Line 392 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 ('['): |
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type = 0; |
break; |
break; |
default: |
default: |
term_nescape(p, wp, 1); |
do_reserved(p, wp, 1); |
*word = wp; |
*word = wp; |
return; |
return; |
} |
} |
Line 467 term_pescape(struct termp *p, const char **word) |
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Line 412 term_pescape(struct termp *p, const char **word) |
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switch (*wp) { |
switch (*wp) { |
case ('B'): |
case ('B'): |
p->flags |= TERMP_BOLD; |
p->bold++; |
break; |
break; |
case ('I'): |
case ('I'): |
p->flags |= TERMP_UNDER; |
p->under++; |
break; |
break; |
case ('P'): |
case ('P'): |
/* FALLTHROUGH */ |
/* FALLTHROUGH */ |
case ('R'): |
case ('R'): |
p->flags &= ~TERMP_STYLE; |
p->bold = p->under = 0; |
break; |
break; |
default: |
default: |
break; |
break; |
Line 485 term_pescape(struct termp *p, const char **word) |
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Line 430 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 499 term_pescape(struct termp *p, const char **word) |
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Line 444 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); |
if (type) |
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do_special(p, wp - j, (size_t)j); |
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else |
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do_reserved(p, wp - j, (size_t)j); |
*word = wp; |
*word = wp; |
} |
} |
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Line 514 term_word(struct termp *p, const char *word) |
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Line 462 term_word(struct termp *p, const char *word) |
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{ |
{ |
const char *sv; |
const char *sv; |
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if (term_isclosedelim(word)) |
sv = word; |
if ( ! (TERMP_IGNDELIM & p->flags)) |
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p->flags |= TERMP_NOSPACE; |
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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; |
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break; |
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default: |
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break; |
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} |
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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 ( ; *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 (sv = word; *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(sv)) |
if (sv[0] && 0 == sv[1]) |
p->flags |= TERMP_NOSPACE; |
switch (sv[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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p->flags |= TERMP_NOSPACE; |
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break; |
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default: |
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break; |
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} |
} |
} |
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Line 546 term_word(struct termp *p, const char *word) |
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Line 523 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 556 term_chara(struct termp *p, char c) |
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Line 533 term_chara(struct termp *p, char c) |
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s = p->maxcols * 2; |
s = p->maxcols * 2; |
p->buf = realloc(p->buf, s); |
p->buf = realloc(p->buf, s); |
if (NULL == p->buf) |
if (NULL == p->buf) |
err(1, "realloc"); |
err(1, "realloc"); /* FIXME: shouldn't be here! */ |
p->maxcols = s; |
p->maxcols = s; |
} |
} |
p->buf[(int)(p->col)++] = c; |
p->buf[(int)(p->col)++] = c; |
Line 564 term_chara(struct termp *p, char c) |
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Line 541 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 (' ' != c && TERMP_STYLE & p->flags) { |
if (' ' != c) { |
if (TERMP_BOLD & p->flags) { |
if (p->under) { |
term_chara(p, c); |
buffer(p, '_'); |
term_chara(p, 8); |
buffer(p, 8); |
} |
} |
if (TERMP_UNDER & p->flags) { |
if (p->bold) { |
term_chara(p, '_'); |
buffer(p, c); |
term_chara(p, 8); |
buffer(p, 8); |
} |
} |
} |
} |
term_chara(p, c); |
buffer(p, c); |
} |
} |
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size_t |
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term_vspan(const struct roffsu *su) |
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{ |
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double r; |
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switch (su->unit) { |
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case (SCALE_CM): |
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r = su->scale * 2; |
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break; |
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case (SCALE_IN): |
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r = su->scale * 6; |
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break; |
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case (SCALE_PC): |
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r = su->scale; |
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break; |
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case (SCALE_PT): |
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r = su->scale / 8; |
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break; |
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case (SCALE_MM): |
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r = su->scale / 1000; |
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break; |
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case (SCALE_VS): |
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r = su->scale; |
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break; |
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default: |
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r = su->scale - 1; |
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break; |
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} |
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if (r < 0.0) |
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r = 0.0; |
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return(/* LINTED */(size_t) |
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r); |
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} |
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size_t |
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term_hspan(const struct roffsu *su) |
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{ |
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double r; |
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/* XXX: CM, IN, and PT are approximations. */ |
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switch (su->unit) { |
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case (SCALE_CM): |
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r = 4 * su->scale; |
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break; |
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case (SCALE_IN): |
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/* XXX: this is an approximation. */ |
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r = 10 * su->scale; |
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break; |
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case (SCALE_PC): |
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r = (10 * su->scale) / 6; |
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break; |
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case (SCALE_PT): |
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r = (10 * su->scale) / 72; |
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break; |
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case (SCALE_MM): |
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r = su->scale / 1000; /* FIXME: double-check. */ |
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break; |
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case (SCALE_VS): |
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r = su->scale * 2 - 1; /* FIXME: double-check. */ |
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break; |
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default: |
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r = su->scale; |
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break; |
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} |
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if (r < 0.0) |
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r = 0.0; |
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return((size_t)/* LINTED */ |
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r); |
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} |
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