version 1.128, 2010/01/01 17:14:30 |
version 1.143, 2010/06/07 21:03:02 |
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#include <assert.h> |
#include <assert.h> |
#include <ctype.h> |
#include <ctype.h> |
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#include <stdint.h> |
#include <stdio.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
#include <time.h> |
#include <time.h> |
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#include "mandoc.h" |
#include "chars.h" |
#include "chars.h" |
#include "out.h" |
#include "out.h" |
#include "term.h" |
#include "term.h" |
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#include "mdoc.h" |
#include "mdoc.h" |
#include "main.h" |
#include "main.h" |
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static struct termp *term_alloc(enum termenc); |
#define PS_CHAR_WIDTH 6 |
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#define PS_CHAR_HEIGHT 12 |
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#define PS_CHAR_TOPMARG (792 - 24) |
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#define PS_CHAR_TOP (PS_CHAR_TOPMARG - 36) |
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#define PS_CHAR_LEFT 36 |
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#define PS_CHAR_BOTMARG 24 |
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#define PS_CHAR_BOT (PS_CHAR_BOTMARG + 36) |
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static struct termp *alloc(char *, enum termenc, enum termtype); |
static void term_free(struct termp *); |
static void term_free(struct termp *); |
static void spec(struct termp *, const char *, size_t); |
static void spec(struct termp *, const char *, size_t); |
static void res(struct termp *, const char *, size_t); |
static void res(struct termp *, const char *, size_t); |
Line 42 static void buffera(struct termp *, const char *, s |
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Line 52 static void buffera(struct termp *, const char *, s |
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static void bufferc(struct termp *, char); |
static void bufferc(struct termp *, char); |
static void adjbuf(struct termp *p, size_t); |
static void adjbuf(struct termp *p, size_t); |
static void encode(struct termp *, const char *, size_t); |
static void encode(struct termp *, const char *, size_t); |
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static void advance(struct termp *, size_t); |
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static void endline(struct termp *); |
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static void letter(struct termp *, char); |
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static void pageopen(struct termp *); |
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void * |
void * |
ascii_alloc(void) |
ascii_alloc(char *outopts) |
{ |
{ |
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return(term_alloc(TERMENC_ASCII)); |
return(alloc(outopts, TERMENC_ASCII, TERMTYPE_CHAR)); |
} |
} |
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void * |
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ps_alloc(void) |
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{ |
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return(alloc(NULL, TERMENC_ASCII, TERMTYPE_PS)); |
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} |
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void |
void |
terminal_free(void *arg) |
terminal_free(void *arg) |
{ |
{ |
Line 68 term_free(struct termp *p) |
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Line 90 term_free(struct termp *p) |
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free(p->buf); |
free(p->buf); |
if (p->symtab) |
if (p->symtab) |
chars_free(p->symtab); |
chars_free(p->symtab); |
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free(p); |
free(p); |
} |
} |
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/* |
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* Push a single letter into our output engine. |
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*/ |
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static void |
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letter(struct termp *p, char c) |
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{ |
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if (TERMTYPE_CHAR == p->type) { |
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/* |
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* If using the terminal device, just push the letter |
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* out into the screen. |
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*/ |
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putchar(c); |
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return; |
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} |
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if ( ! (PS_INLINE & p->psstate)) { |
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/* |
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* If we're not in a PostScript "word" context, then |
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* open one now at the current cursor. |
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*/ |
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printf("%zu %zu moveto\n", p->pscol, p->psrow); |
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putchar('('); |
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p->psstate |= PS_INLINE; |
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} |
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/* |
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* We need to escape these characters as per the PostScript |
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* specification. We would also escape non-graphable characters |
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* (like tabs), but none of them would get to this point and |
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* it's superfluous to abort() on them. |
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*/ |
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switch (c) { |
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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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putchar('\\'); |
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break; |
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default: |
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break; |
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} |
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/* Write the character and adjust where we are on the page. */ |
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putchar(c); |
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p->pscol += PS_CHAR_WIDTH; |
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} |
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/* |
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* Begin a "terminal" context. Since terminal encompasses PostScript, |
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* the actual terminal, etc., there are a few things we can do here. |
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*/ |
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void |
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term_begin(struct termp *p, term_margin head, |
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term_margin foot, const void *arg) |
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{ |
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p->headf = head; |
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p->footf = foot; |
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p->argf = arg; |
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if (TERMTYPE_CHAR == p->type) { |
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/* Emit the header and be done. */ |
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(*p->headf)(p, p->argf); |
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return; |
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} |
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/* |
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* Emit the standard PostScript prologue, set our initial page |
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* position, then run pageopen() on the initial page. |
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*/ |
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printf("%s\n", "%!PS"); |
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printf("%s\n", "/Courier"); |
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printf("%s\n", "10 selectfont"); |
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p->pspage = 1; |
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p->psstate = 0; |
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pageopen(p); |
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} |
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/* |
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* Open a page. This is only used for -Tps at the moment. It opens a |
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* page context, printing the header and the footer. THE OUTPUT BUFFER |
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* MUST BE EMPTY. If it is not, output will ghost on the next line and |
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* we'll be all gross and out of state. |
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*/ |
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static void |
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pageopen(struct termp *p) |
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{ |
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assert(TERMTYPE_PS == p->type); |
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assert(0 == p->psstate); |
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p->pscol = PS_CHAR_LEFT; |
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p->psrow = PS_CHAR_TOPMARG; |
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p->psstate |= PS_MARGINS; |
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(*p->headf)(p, p->argf); |
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endline(p); |
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p->psstate &= ~PS_MARGINS; |
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assert(0 == p->psstate); |
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p->pscol = PS_CHAR_LEFT; |
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p->psrow = PS_CHAR_BOTMARG; |
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p->psstate |= PS_MARGINS; |
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(*p->footf)(p, p->argf); |
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endline(p); |
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p->psstate &= ~PS_MARGINS; |
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assert(0 == p->psstate); |
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p->pscol = PS_CHAR_LEFT; |
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p->psrow = PS_CHAR_TOP; |
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} |
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void |
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term_end(struct termp *p) |
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{ |
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if (TERMTYPE_CHAR == p->type) { |
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(*p->footf)(p, p->argf); |
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return; |
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} |
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printf("%s\n", "%%END"); |
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} |
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static void |
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endline(struct termp *p) |
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{ |
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if (TERMTYPE_CHAR == p->type) { |
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putchar('\n'); |
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return; |
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} |
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if (PS_INLINE & p->psstate) { |
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printf(") show\n"); |
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p->psstate &= ~PS_INLINE; |
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} |
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if (PS_MARGINS & p->psstate) |
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return; |
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p->pscol = PS_CHAR_LEFT; |
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if (p->psrow >= PS_CHAR_HEIGHT + PS_CHAR_BOT) { |
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p->psrow -= PS_CHAR_HEIGHT; |
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return; |
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} |
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/* |
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* XXX: can't run pageopen() until we're certain a flushln() has |
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* occured, else the buf will reopen in an awkward state on the |
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* next line. |
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*/ |
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printf("showpage\n"); |
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p->psrow = PS_CHAR_TOP; |
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} |
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/* |
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* Advance the output engine by a certain amount of whitespace. |
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*/ |
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static void |
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advance(struct termp *p, size_t len) |
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{ |
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size_t i; |
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if (TERMTYPE_CHAR == p->type) { |
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/* Just print whitespace on the terminal. */ |
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for (i = 0; i < len; i++) |
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putchar(' '); |
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return; |
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} |
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if (PS_INLINE & p->psstate) { |
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/* Dump out any existing line scope. */ |
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printf(") show\n"); |
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p->psstate &= ~PS_INLINE; |
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} |
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p->pscol += len ? len * PS_CHAR_WIDTH : 0; |
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} |
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static struct termp * |
static struct termp * |
term_alloc(enum termenc enc) |
alloc(char *outopts, enum termenc enc, enum termtype type) |
{ |
{ |
struct termp *p; |
struct termp *p; |
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const char *toks[2]; |
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char *v; |
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size_t width; |
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toks[0] = "width"; |
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toks[1] = NULL; |
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p = calloc(1, sizeof(struct termp)); |
p = calloc(1, sizeof(struct termp)); |
if (NULL == p) { |
if (NULL == p) { |
perror(NULL); |
perror(NULL); |
exit(EXIT_FAILURE); |
exit(EXIT_FAILURE); |
} |
} |
p->maxrmargin = 78; |
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p->type = type; |
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p->tabwidth = 5; |
p->enc = enc; |
p->enc = enc; |
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width = 80; |
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while (outopts && *outopts) |
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switch (getsubopt(&outopts, UNCONST(toks), &v)) { |
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case (0): |
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width = (size_t)atoi(v); |
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break; |
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default: |
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break; |
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} |
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/* Enforce some lower boundary. */ |
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if (width < 60) |
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width = 60; |
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p->defrmargin = width - 2; |
return(p); |
return(p); |
} |
} |
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Line 93 term_alloc(enum termenc enc) |
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Line 333 term_alloc(enum termenc enc) |
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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 |
* broken apart by newlines getting there. A line can also be a |
* broken apart by newlines getting there. A line can also be a |
* fragment of a columnar list. |
* fragment of a columnar list (`Bl -tag' or `Bl -column'), which does |
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* not have a trailing newline. |
* |
* |
* Specifically, a line is whatever's in p->buf of length p->col, which |
* The following flags may be specified: |
* is zeroed after this function returns. |
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* |
* |
* The usage of termp:flags is as follows: |
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* |
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* - TERMP_NOLPAD: when beginning to write the line, don't left-pad the |
* - TERMP_NOLPAD: when beginning to write the line, don't left-pad the |
* offset value. This is useful when doing columnar lists where the |
* offset value. This is useful when doing columnar lists where the |
* prior column has right-padded. |
* prior column has right-padded. |
Line 132 term_flushln(struct termp *p) |
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Line 370 term_flushln(struct termp *p) |
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int i; /* current input position in p->buf */ |
int i; /* current input position in p->buf */ |
size_t vis; /* current visual position on output */ |
size_t vis; /* current visual position on output */ |
size_t vbl; /* number of blanks to prepend to output */ |
size_t vbl; /* number of blanks to prepend to output */ |
size_t vsz; /* visual characters to write to output */ |
size_t vend; /* end of word visual position on output */ |
size_t bp; /* visual right border position */ |
size_t bp; /* visual right border position */ |
int j; /* temporary loop index */ |
int j; /* temporary loop index */ |
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int jhy; /* last hyphen before line overflow */ |
size_t maxvis, mmax; |
size_t maxvis, mmax; |
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 147 term_flushln(struct termp *p) |
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Line 385 term_flushln(struct termp *p) |
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assert(p->offset < p->rmargin); |
assert(p->offset < p->rmargin); |
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maxvis = (int)(p->rmargin - p->offset) - overstep < 0 ? |
maxvis = (int)(p->rmargin - p->offset) - p->overstep < 0 ? |
/* LINTED */ |
/* LINTED */ |
0 : p->rmargin - p->offset - overstep; |
0 : p->rmargin - p->offset - p->overstep; |
mmax = (int)(p->maxrmargin - p->offset) - overstep < 0 ? |
mmax = (int)(p->maxrmargin - p->offset) - p->overstep < 0 ? |
/* LINTED */ |
/* LINTED */ |
0 : p->maxrmargin - p->offset - overstep; |
0 : p->maxrmargin - p->offset - p->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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* Indent the first line of a paragraph. |
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*/ |
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vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset; |
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/* |
/* |
* FIXME: if bp is zero, we still output the first word before |
* FIXME: if bp is zero, we still output the first word before |
* breaking the line. |
* breaking the line. |
*/ |
*/ |
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vis = 0; |
vis = vend = i = 0; |
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while (i < (int)p->col) { |
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/* |
/* |
* If in the standard case (left-justified), then begin with our |
* Handle literal tab characters. |
* indentation, otherwise (columns, etc.) just start spitting |
*/ |
* out text. |
for (j = i; j < (int)p->col; j++) { |
*/ |
if ('\t' != p->buf[j]) |
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break; |
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vend = (vis/p->tabwidth+1)*p->tabwidth; |
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vbl += vend - vis; |
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vis = vend; |
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} |
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if ( ! (p->flags & TERMP_NOLPAD)) |
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/* LINTED */ |
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for (j = 0; j < (int)p->offset; j++) |
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putchar(' '); |
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for (i = 0; i < (int)p->col; i++) { |
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/* |
/* |
* Count up visible word characters. Control sequences |
* Count up visible word characters. Control sequences |
* (starting with the CSI) aren't counted. A space |
* (starting with the CSI) aren't counted. A space |
Line 183 term_flushln(struct termp *p) |
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Line 426 term_flushln(struct termp *p) |
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*/ |
*/ |
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/* LINTED */ |
/* LINTED */ |
for (j = i, vsz = 0; j < (int)p->col; j++) { |
for (jhy = 0; j < (int)p->col; j++) { |
if (j && ' ' == p->buf[j]) |
if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j]) |
break; |
break; |
else if (8 == p->buf[j]) |
if (8 != p->buf[j]) { |
vsz--; |
if (vend > vis && vend < bp && |
else |
ASCII_HYPH == p->buf[j]) |
vsz++; |
jhy = j; |
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vend++; |
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} else |
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vend--; |
} |
} |
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/* |
/* |
* Choose the number of blanks to prepend: no blank at the |
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* beginning of a line, one between words -- but do not |
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* actually write them yet. |
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*/ |
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vbl = (size_t)(0 == vis ? 0 : 1); |
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/* |
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* Find out whether we would exceed the right margin. |
* Find out whether we would exceed the right margin. |
* If so, break to the next line. (TODO: hyphenate) |
* If so, break to the next line. |
* Otherwise, write the chosen number of blanks now. |
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*/ |
*/ |
if (vis && vis + vbl + vsz > bp) { |
if (vend > bp && 0 == jhy && vis > 0) { |
putchar('\n'); |
vend -= vis; |
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endline(p); |
if (TERMP_NOBREAK & p->flags) { |
if (TERMP_NOBREAK & p->flags) { |
for (j = 0; j < (int)p->rmargin; j++) |
p->viscol = p->rmargin; |
putchar(' '); |
advance(p, p->rmargin); |
vis = p->rmargin - p->offset; |
vend += p->rmargin - p->offset; |
} else { |
} else { |
for (j = 0; j < (int)p->offset; j++) |
p->viscol = 0; |
putchar(' '); |
vbl = p->offset; |
vis = 0; |
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} |
} |
/* Remove the overstep width. */ |
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/* Remove the p->overstep width. */ |
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bp += (int)/* LINTED */ |
bp += (int)/* LINTED */ |
overstep; |
p->overstep; |
overstep = 0; |
p->overstep = 0; |
} else { |
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for (j = 0; j < (int)vbl; j++) |
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putchar(' '); |
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vis += vbl; |
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} |
} |
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/* |
/* |
* Finally, write out the word. |
* Skip leading tabs, they were handled above. |
*/ |
*/ |
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while (i < (int)p->col && '\t' == p->buf[i]) |
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i++; |
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/* Write out the [remaining] word. */ |
for ( ; i < (int)p->col; i++) { |
for ( ; i < (int)p->col; i++) { |
if (' ' == p->buf[i]) |
if (vend > bp && jhy > 0 && i > jhy) |
break; |
break; |
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if ('\t' == p->buf[i]) |
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break; |
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if (' ' == p->buf[i]) { |
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while (' ' == p->buf[i]) { |
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vbl++; |
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i++; |
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} |
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break; |
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} |
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if (ASCII_NBRSP == p->buf[i]) { |
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vbl++; |
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continue; |
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} |
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/* The unit sep. is a non-breaking space. */ |
/* |
if (31 == p->buf[i]) |
* Now we definitely know there will be |
putchar(' '); |
* printable characters to output, |
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* so write preceding white space now. |
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*/ |
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if (vbl) { |
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advance(p, vbl); |
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p->viscol += vbl; |
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vbl = 0; |
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} |
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if (ASCII_HYPH == p->buf[i]) |
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letter(p, '-'); |
else |
else |
putchar(p->buf[i]); |
letter(p, p->buf[i]); |
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p->viscol += 1; |
} |
} |
vis += vsz; |
vend += vbl; |
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vis = vend; |
} |
} |
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p->col = 0; |
p->col = 0; |
overstep = 0; |
p->overstep = 0; |
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if ( ! (TERMP_NOBREAK & p->flags)) { |
if ( ! (TERMP_NOBREAK & p->flags)) { |
putchar('\n'); |
p->viscol = 0; |
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endline(p); |
return; |
return; |
} |
} |
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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 */ |
p->overstep = /* LINTED */ |
vis - maxvis + 1; |
vis - maxvis + 1; |
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/* |
/* |
Line 264 term_flushln(struct termp *p) |
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Line 531 term_flushln(struct termp *p) |
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* move it one step LEFT and flag the rest of the line |
* move it one step LEFT and flag the rest of the line |
* to be longer. |
* to be longer. |
*/ |
*/ |
if (overstep >= -1) { |
if (p->overstep >= -1) { |
assert((int)maxvis + overstep >= 0); |
assert((int)maxvis + p->overstep >= 0); |
/* LINTED */ |
/* LINTED */ |
maxvis += overstep; |
maxvis += p->overstep; |
} else |
} else |
overstep = 0; |
p->overstep = 0; |
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} else if (TERMP_DANGLE & p->flags) |
} else if (TERMP_DANGLE & p->flags) |
return; |
return; |
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/* Right-pad. */ |
/* Right-pad. */ |
if (maxvis > vis + /* LINTED */ |
if (maxvis > vis + /* LINTED */ |
((TERMP_TWOSPACE & p->flags) ? 1 : 0)) |
((TERMP_TWOSPACE & p->flags) ? 1 : 0)) { |
for ( ; vis < maxvis; vis++) |
p->viscol += maxvis - vis; |
putchar(' '); |
advance(p, maxvis - vis); |
else { /* ...or newline break. */ |
vis += (maxvis - vis); |
putchar('\n'); |
} else { /* ...or newline break. */ |
for (i = 0; i < (int)p->rmargin; i++) |
endline(p); |
putchar(' '); |
p->viscol = p->rmargin; |
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advance(p, p->rmargin); |
} |
} |
} |
} |
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Line 297 term_newln(struct termp *p) |
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Line 565 term_newln(struct termp *p) |
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{ |
{ |
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p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
if (0 == p->col) { |
if (0 == p->col && 0 == p->viscol) { |
p->flags &= ~TERMP_NOLPAD; |
p->flags &= ~TERMP_NOLPAD; |
return; |
return; |
} |
} |
Line 317 term_vspace(struct termp *p) |
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Line 585 term_vspace(struct termp *p) |
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{ |
{ |
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term_newln(p); |
term_newln(p); |
putchar('\n'); |
p->viscol = 0; |
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endline(p); |
} |
} |
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Line 442 term_word(struct termp *p, const char *word) |
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Line 711 term_word(struct termp *p, const char *word) |
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case(')'): |
case(')'): |
/* FALLTHROUGH */ |
/* FALLTHROUGH */ |
case(']'): |
case(']'): |
/* FALLTHROUGH */ |
|
case('}'): |
|
if ( ! (TERMP_IGNDELIM & p->flags)) |
if ( ! (TERMP_IGNDELIM & p->flags)) |
p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
break; |
break; |
Line 451 term_word(struct termp *p, const char *word) |
|
Line 718 term_word(struct termp *p, const char *word) |
|
break; |
break; |
} |
} |
|
|
if ( ! (TERMP_NOSPACE & p->flags)) |
if ( ! (TERMP_NOSPACE & p->flags)) { |
bufferc(p, ' '); |
bufferc(p, ' '); |
|
if (TERMP_SENTENCE & p->flags) |
|
bufferc(p, ' '); |
|
} |
|
|
if ( ! (p->flags & TERMP_NONOSPACE)) |
if ( ! (p->flags & TERMP_NONOSPACE)) |
p->flags &= ~TERMP_NOSPACE; |
p->flags &= ~TERMP_NOSPACE; |
|
|
|
p->flags &= ~TERMP_SENTENCE; |
|
|
/* FIXME: use strcspn. */ |
/* FIXME: use strcspn. */ |
|
|
while (*word) { |
while (*word) { |
Line 497 term_word(struct termp *p, const char *word) |
|
Line 769 term_word(struct termp *p, const char *word) |
|
p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
} |
} |
|
|
|
/* |
|
* Note that we don't process the pipe: the parser sees it as |
|
* punctuation, but we don't in terms of typography. |
|
*/ |
if (sv[0] && 0 == sv[1]) |
if (sv[0] && 0 == sv[1]) |
switch (sv[0]) { |
switch (sv[0]) { |
case('('): |
case('('): |
/* FALLTHROUGH */ |
/* FALLTHROUGH */ |
case('['): |
case('['): |
/* FALLTHROUGH */ |
|
case('{'): |
|
p->flags |= TERMP_NOSPACE; |
p->flags |= TERMP_NOSPACE; |
break; |
break; |
default: |
default: |
Line 564 encode(struct termp *p, const char *word, size_t sz) |
|
Line 838 encode(struct termp *p, const char *word, size_t sz) |
|
* character by character. |
* character by character. |
*/ |
*/ |
|
|
if (TERMFONT_NONE == (f = term_fonttop(p))) { |
if (TERMTYPE_PS == p->type) { |
|
buffera(p, word, sz); |
|
return; |
|
} else if (TERMFONT_NONE == (f = term_fonttop(p))) { |
buffera(p, word, sz); |
buffera(p, word, sz); |
return; |
return; |
} |
} |