=================================================================== RCS file: /cvs/mandoc/term.c,v retrieving revision 1.130 retrieving revision 1.149 diff -u -p -r1.130 -r1.149 --- mandoc/term.c 2010/04/03 12:46:35 1.130 +++ mandoc/term.c 2010/06/25 18:53:14 1.149 @@ -1,6 +1,6 @@ -/* $Id: term.c,v 1.130 2010/04/03 12:46:35 kristaps Exp $ */ +/* $Id: term.c,v 1.149 2010/06/25 18:53:14 kristaps Exp $ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons + * Copyright (c) 2008, 2009 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -22,11 +22,12 @@ #include #include +#include #include #include #include -#include +#include "mandoc.h" #include "chars.h" #include "out.h" #include "term.h" @@ -34,8 +35,6 @@ #include "mdoc.h" #include "main.h" -static struct termp *term_alloc(enum termenc); -static void term_free(struct termp *); static void spec(struct termp *, const char *, size_t); static void res(struct termp *, const char *, size_t); static void buffera(struct termp *, const char *, size_t); @@ -44,45 +43,50 @@ static void adjbuf(struct termp *p, size_t); static void encode(struct termp *, const char *, size_t); -void * -ascii_alloc(void) +void +term_free(struct termp *p) { - return(term_alloc(TERMENC_ASCII)); + if (p->buf) + free(p->buf); + if (p->symtab) + chars_free(p->symtab); + + free(p); } void -terminal_free(void *arg) +term_begin(struct termp *p, term_margin head, + term_margin foot, const void *arg) { - term_free((struct termp *)arg); + p->headf = head; + p->footf = foot; + p->argf = arg; + (*p->begin)(p); } -static void -term_free(struct termp *p) +void +term_end(struct termp *p) { - if (p->buf) - free(p->buf); - if (p->symtab) - chars_free(p->symtab); - - free(p); + (*p->end)(p); } -static struct termp * +struct termp * term_alloc(enum termenc enc) { - struct termp *p; + struct termp *p; p = calloc(1, sizeof(struct termp)); if (NULL == p) { perror(NULL); exit(EXIT_FAILURE); } + p->enc = enc; return(p); } @@ -129,10 +133,10 @@ term_flushln(struct termp *p) int i; /* current input position in p->buf */ size_t vis; /* current visual position on 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 hyph; /* visible position of hyphen */ int j; /* temporary loop index */ + int jhy; /* last hyphen before line overflow */ size_t maxvis, mmax; /* @@ -153,100 +157,64 @@ term_flushln(struct termp *p) bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; + /* + * Indent the first line of a paragraph. + */ + vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset; + /* * FIXME: if bp is zero, we still output the first word before * breaking the line. */ - vis = 0; + vis = vend = i = 0; + while (i < (int)p->col) { - /* - * If in the standard case (left-justified), then begin with our - * indentation, otherwise (columns, etc.) just start spitting - * out text. - */ + /* + * Handle literal tab characters. + */ + for (j = i; j < (int)p->col; j++) { + if ('\t' != p->buf[j]) + break; + vend = (vis/p->tabwidth+1)*p->tabwidth; + vbl += vend - vis; + vis = vend; + } - if ( ! (p->flags & TERMP_NOLPAD)) - /* LINTED */ - for (j = 0; j < (int)p->offset; j++) - putchar(' '); - - for (i = 0; i < (int)p->col; i++) { /* * Count up visible word characters. Control sequences * (starting with the CSI) aren't counted. A space * generates a non-printing word, which is valid (the * space is printed according to regular spacing rules). - * Collect the number of printable characters until the - * first hyphen, if found. Hyphens aren't included if - * they're the first character (so `Fl' doesn't break) - * or second consecutive character (`Fl -'). */ /* LINTED */ - for (j = i, vsz = 0, hyph = 0; j < (int)p->col; j++) { - if (j && ' ' == p->buf[j]) + for (jhy = 0; j < (int)p->col; j++) { + if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j]) break; - if (8 == p->buf[j]) - vsz--; - else - vsz++; - if (j > i && '-' == p->buf[j] && 0 == hyph) - if ('-' != p->buf[j - 1]) - hyph = vsz; + if (8 != p->buf[j]) { + if (vend > vis && vend < bp && + ASCII_HYPH == p->buf[j]) + jhy = j; + vend++; + } else + vend--; } /* - * Choose the number of blanks to prepend: no blank at the - * beginning of a line, one between words -- but do not - * actually write them yet. - */ - - vbl = (size_t)(0 == vis ? 0 : 1); - - /* * Find out whether we would exceed the right margin. - * If so, break to the next line, possibly after - * emittign character up to a hyphen. Otherwise, write - * the chosen number of blanks. + * If so, break to the next line. */ - - if (vis && vis + vbl + vsz > bp) { - /* - * Has a hyphen been found before the breakpoint - * that we can use? - */ - if (hyph && vis + vbl + hyph <= bp) { - /* First prepend blanks. */ - for (j = 0; j < (int)vbl; j++) - putchar(' '); - - /* Emit up to the character. */ - do { - if (31 == p->buf[i]) - putchar(' '); - else - putchar(p->buf[i]); - if (8 != p->buf[i]) - vsz--; - } while ('-' != p->buf[i++]); - - /* Emit trailing decoration. */ - if (8 == p->buf[i]) { - putchar(p->buf[i]); - putchar(p->buf[i + 1]); - } - } - - putchar('\n'); + if (vend > bp && 0 == jhy && vis > 0) { + vend -= vis; + (*p->endline)(p); if (TERMP_NOBREAK & p->flags) { - for (j = 0; j < (int)p->rmargin; j++) - putchar(' '); - vis = p->rmargin - p->offset; + p->viscol = p->rmargin; + (*p->advance)(p, p->rmargin); + vend += p->rmargin - p->offset; } else { - for (j = 0; j < (int)p->offset; j++) - putchar(' '); - vis = 0; + p->viscol = 0; + vbl = p->offset; } /* Remove the p->overstep width. */ @@ -254,29 +222,60 @@ term_flushln(struct termp *p) bp += (int)/* LINTED */ p->overstep; p->overstep = 0; - } else { - for (j = 0; j < (int)vbl; j++) - putchar(' '); - vis += vbl; } + /* + * Skip leading tabs, they were handled above. + */ + while (i < (int)p->col && '\t' == p->buf[i]) + i++; + /* Write out the [remaining] word. */ - for ( ; i < (int)p->col; i++) - if (' ' == p->buf[i]) + for ( ; i < (int)p->col; i++) { + if (vend > bp && jhy > 0 && i > jhy) break; - else if (31 == p->buf[i]) - putchar(' '); + if ('\t' == p->buf[i]) + break; + if (' ' == p->buf[i]) { + while (' ' == p->buf[i]) { + vbl++; + i++; + } + break; + } + if (ASCII_NBRSP == p->buf[i]) { + vbl++; + continue; + } + + /* + * Now we definitely know there will be + * printable characters to output, + * so write preceding white space now. + */ + if (vbl) { + (*p->advance)(p, vbl); + p->viscol += vbl; + vbl = 0; + } + + if (ASCII_HYPH == p->buf[i]) + (*p->letter)(p, '-'); else - putchar(p->buf[i]); + (*p->letter)(p, p->buf[i]); - vis += vsz; + p->viscol += 1; + } + vend += vbl; + vis = vend; } p->col = 0; p->overstep = 0; if ( ! (TERMP_NOBREAK & p->flags)) { - putchar('\n'); + p->viscol = 0; + (*p->endline)(p); return; } @@ -307,13 +306,14 @@ term_flushln(struct termp *p) /* Right-pad. */ if (maxvis > vis + /* LINTED */ - ((TERMP_TWOSPACE & p->flags) ? 1 : 0)) - for ( ; vis < maxvis; vis++) - putchar(' '); - else { /* ...or newline break. */ - putchar('\n'); - for (i = 0; i < (int)p->rmargin; i++) - putchar(' '); + ((TERMP_TWOSPACE & p->flags) ? 1 : 0)) { + p->viscol += maxvis - vis; + (*p->advance)(p, maxvis - vis); + vis += (maxvis - vis); + } else { /* ...or newline break. */ + (*p->endline)(p); + p->viscol = p->rmargin; + (*p->advance)(p, p->rmargin); } } @@ -328,7 +328,7 @@ term_newln(struct termp *p) { p->flags |= TERMP_NOSPACE; - if (0 == p->col) { + if (0 == p->col && 0 == p->viscol) { p->flags &= ~TERMP_NOLPAD; return; } @@ -348,7 +348,8 @@ term_vspace(struct termp *p) { term_newln(p); - putchar('\n'); + p->viscol = 0; + (*p->endline)(p); } @@ -480,12 +481,17 @@ term_word(struct termp *p, const char *word) break; } - if ( ! (TERMP_NOSPACE & p->flags)) + if ( ! (TERMP_NOSPACE & p->flags)) { bufferc(p, ' '); + if (TERMP_SENTENCE & p->flags) + bufferc(p, ' '); + } if ( ! (p->flags & TERMP_NONOSPACE)) p->flags &= ~TERMP_NOSPACE; + p->flags &= ~TERMP_SENTENCE; + /* FIXME: use strcspn. */ while (*word) { @@ -526,10 +532,12 @@ term_word(struct termp *p, const char *word) 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]) switch (sv[0]) { - case('|'): - /* FALLTHROUGH */ case('('): /* FALLTHROUGH */ case('['): @@ -616,8 +624,28 @@ encode(struct termp *p, const char *word, size_t sz) size_t -term_vspan(const struct roffsu *su) +term_len(const struct termp *p, size_t sz) { + + return((*p->width)(p, ' ') * sz); +} + + +size_t +term_strlen(const struct termp *p, const char *cp) +{ + size_t sz; + + for (sz = 0; *cp; cp++) + sz += (*p->width)(p, *cp); + + return(sz); +} + + +size_t +term_vspan(const struct termp *p, const struct roffsu *su) +{ double r; switch (su->unit) { @@ -652,7 +680,7 @@ term_vspan(const struct roffsu *su) size_t -term_hspan(const struct roffsu *su) +term_hspan(const struct termp *p, const struct roffsu *su) { double r;