=================================================================== RCS file: /cvs/mandoc/term.c,v retrieving revision 1.102 retrieving revision 1.121 diff -u -p -r1.102 -r1.121 --- mandoc/term.c 2009/09/20 13:43:31 1.102 +++ mandoc/term.c 2009/11/05 07:21:02 1.121 @@ -1,4 +1,4 @@ -/* $Id: term.c,v 1.102 2009/09/20 13:43:31 kristaps Exp $ */ +/* $Id: term.c,v 1.121 2009/11/05 07:21:02 kristaps Exp $ */ /* * Copyright (c) 2008, 2009 Kristaps Dzonsons * @@ -15,20 +15,20 @@ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include -#include #include #include #include +#include #include "chars.h" +#include "out.h" #include "term.h" #include "man.h" #include "mdoc.h" +#include "main.h" -extern void man_run(struct termp *, - const struct man *); -extern void mdoc_run(struct termp *, - const struct mdoc *); +/* FIXME: accomodate non-breaking, non-collapsing white-space. */ +/* FIXME: accomodate non-breaking, collapsing white-space. */ static struct termp *term_alloc(enum termenc); static void term_free(struct termp *); @@ -51,32 +51,6 @@ ascii_alloc(void) void -terminal_man(void *arg, const struct man *man) -{ - struct termp *p; - - p = (struct termp *)arg; - if (NULL == p->symtab) - p->symtab = chars_init(CHARS_ASCII); - - man_run(p, man); -} - - -void -terminal_mdoc(void *arg, const struct mdoc *mdoc) -{ - struct termp *p; - - p = (struct termp *)arg; - if (NULL == p->symtab) - p->symtab = chars_init(CHARS_ASCII); - - mdoc_run(p, mdoc); -} - - -void terminal_free(void *arg) { @@ -102,9 +76,11 @@ term_alloc(enum termenc enc) { struct termp *p; - if (NULL == (p = malloc(sizeof(struct termp)))) - return(NULL); - bzero(p, sizeof(struct termp)); + p = calloc(1, sizeof(struct termp)); + if (NULL == p) { + perror(NULL); + exit(EXIT_FAILURE); + } p->maxrmargin = 78; p->enc = enc; return(p); @@ -145,38 +121,45 @@ term_alloc(enum termenc enc) * If TERMP_NOBREAK is specified and the line overruns the right * margin, it will break and pad-right to the right margin after * writing. If maxrmargin is violated, it will break and continue - * writing from the right-margin, which will lead to the above - * scenario upon exit. - * - * Otherwise, the line will break at the right margin. Extremely long - * lines will cause the system to emit a warning (TODO: hyphenate, if - * possible). + * writing from the right-margin, which will lead to the above scenario + * upon exit. Otherwise, the line will break at the right margin. */ void term_flushln(struct termp *p) { - int i, j; - size_t vbl, vsz, vis, maxvis, mmax, bp; + 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 bp; /* visual right border position */ + int j; /* temporary loop index */ + size_t maxvis, mmax; static int overstep = 0; /* * First, establish the maximum columns of "visible" content. * This is usually the difference between the right-margin and * an indentation, but can be, for tagged lists or columns, a - * small set of values. + * small set of values. */ assert(p->offset < p->rmargin); - assert((int)(p->rmargin - p->offset) - overstep > 0); - maxvis = /* LINTED */ - p->rmargin - p->offset - overstep; - mmax = /* LINTED */ - p->maxrmargin - p->offset - overstep; + maxvis = (int)(p->rmargin - p->offset) - overstep < 0 ? + /* LINTED */ + 0 : p->rmargin - p->offset - overstep; + mmax = (int)(p->maxrmargin - p->offset) - overstep < 0 ? + /* LINTED */ + 0 : p->maxrmargin - p->offset - overstep; bp = TERMP_NOBREAK & p->flags ? mmax : maxvis; + + /* + * FIXME: if bp is zero, we still output the first word before + * breaking the line. + */ + vis = 0; - overstep = 0; /* * If in the standard case (left-justified), then begin with our @@ -230,6 +213,10 @@ term_flushln(struct termp *p) putchar(' '); vis = 0; } + /* Remove the overstep width. */ + bp += (int)/* LINTED */ + overstep; + overstep = 0; } else { for (j = 0; j < (int)vbl; j++) putchar(' '); @@ -242,11 +229,18 @@ term_flushln(struct termp *p) for ( ; i < (int)p->col; i++) { if (' ' == p->buf[i]) break; - putchar(p->buf[i]); + + /* The unit sep. is a non-breaking space. */ + if (31 == p->buf[i]) + putchar(' '); + else + putchar(p->buf[i]); } vis += vsz; } + p->col = 0; + overstep = 0; if ( ! (TERMP_NOBREAK & p->flags)) { putchar('\n'); @@ -555,8 +549,10 @@ buffer(struct termp *p, char c) p->maxcols = 256; s = p->maxcols * 2; p->buf = realloc(p->buf, s); - if (NULL == p->buf) - err(1, "realloc"); /* FIXME: shouldn't be here! */ + if (NULL == p->buf) { + perror(NULL); + exit(EXIT_FAILURE); + } p->maxcols = s; } p->buf[(int)(p->col)++] = c; @@ -568,14 +564,91 @@ encode(struct termp *p, char c) { if (' ' != c) { - if (p->bold) { - buffer(p, c); - buffer(p, 8); - } if (p->under) { buffer(p, '_'); buffer(p, 8); } + if (p->bold) { + buffer(p, c); + buffer(p, 8); + } } buffer(p, c); } + + +size_t +term_vspan(const struct roffsu *su) +{ + double r; + + switch (su->unit) { + case (SCALE_CM): + r = su->scale * 2; + break; + case (SCALE_IN): + r = su->scale * 6; + break; + 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; + } + + if (r < 0.0) + r = 0.0; + return(/* LINTED */(size_t) + r); +} + + +size_t +term_hspan(const struct roffsu *su) +{ + double r; + + /* XXX: CM, IN, and PT are approximations. */ + + switch (su->unit) { + case (SCALE_CM): + r = 4 * su->scale; + break; + 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; + } + + if (r < 0.0) + r = 0.0; + return((size_t)/* LINTED */ + r); +} + +