=================================================================== RCS file: /cvs/mandoc/out.c,v retrieving revision 1.46 retrieving revision 1.68 diff -u -p -r1.46 -r1.68 --- mandoc/out.c 2013/10/05 20:30:05 1.46 +++ mandoc/out.c 2017/06/14 18:23:37 1.68 @@ -1,7 +1,7 @@ -/* $Id: out.c,v 1.46 2013/10/05 20:30:05 schwarze Exp $ */ +/* $Id: out.c,v 1.68 2017/06/14 18:23:37 schwarze Exp $ */ /* * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons - * Copyright (c) 2011 Ingo Schwarze + * Copyright (c) 2011, 2014, 2015, 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -15,121 +15,84 @@ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ -#ifdef HAVE_CONFIG_H #include "config.h" -#endif #include #include -#include -#include #include #include #include +#include "mandoc_aux.h" #include "mandoc.h" #include "out.h" static void tblcalc_data(struct rofftbl *, struct roffcol *, - const struct tbl_opts *, const struct tbl_dat *); + const struct tbl_opts *, const struct tbl_dat *, + size_t); static void tblcalc_literal(struct rofftbl *, struct roffcol *, - const struct tbl_dat *); + const struct tbl_dat *, size_t); static void tblcalc_number(struct rofftbl *, struct roffcol *, const struct tbl_opts *, const struct tbl_dat *); -/* - * Convert a `scaling unit' to a consistent form, or fail. Scaling - * units are documented in groff.7, mdoc.7, man.7. + +/* + * Parse the *src string and store a scaling unit into *dst. + * If the string doesn't specify the unit, use the default. + * If no default is specified, fail. + * Return a pointer to the byte after the last byte used, + * or NULL on total failure. */ -int +const char * a2roffsu(const char *src, struct roffsu *dst, enum roffscale def) { - char buf[BUFSIZ], hasd; - int i; - enum roffscale unit; + char *endptr; - if ('\0' == *src) - return(0); + dst->unit = def == SCALE_MAX ? SCALE_BU : def; + dst->scale = strtod(src, &endptr); + if (endptr == src) + return NULL; - i = hasd = 0; - - switch (*src) { - case ('+'): - src++; + switch (*endptr++) { + case 'c': + dst->unit = SCALE_CM; break; - case ('-'): - buf[i++] = *src++; + case 'i': + dst->unit = SCALE_IN; break; - default: + case 'f': + dst->unit = SCALE_FS; break; - } - - if ('\0' == *src) - return(0); - - while (i < BUFSIZ) { - if ( ! isdigit((unsigned char)*src)) { - if ('.' != *src) - break; - else if (hasd) - break; - else - hasd = 1; - } - buf[i++] = *src++; - } - - if (BUFSIZ == i || (*src && *(src + 1))) - return(0); - - buf[i] = '\0'; - - switch (*src) { - case ('c'): - unit = SCALE_CM; + case 'M': + dst->unit = SCALE_MM; break; - case ('i'): - unit = SCALE_IN; + case 'm': + dst->unit = SCALE_EM; break; - case ('P'): - unit = SCALE_PC; + case 'n': + dst->unit = SCALE_EN; break; - case ('p'): - unit = SCALE_PT; + case 'P': + dst->unit = SCALE_PC; break; - case ('f'): - unit = SCALE_FS; + case 'p': + dst->unit = SCALE_PT; break; - case ('v'): - unit = SCALE_VS; + case 'u': + dst->unit = SCALE_BU; break; - case ('m'): - unit = SCALE_EM; + case 'v': + dst->unit = SCALE_VS; break; - case ('\0'): + default: + endptr--; if (SCALE_MAX == def) - return(0); - unit = SCALE_BU; + return NULL; + dst->unit = def; break; - case ('u'): - unit = SCALE_BU; - break; - case ('M'): - unit = SCALE_MM; - break; - case ('n'): - unit = SCALE_EN; - break; - default: - return(0); } - - /* FIXME: do this in the caller. */ - if ((dst->scale = atof(buf)) < 0) - dst->scale = 0; - dst->unit = unit; - return(1); + return endptr; } /* @@ -139,11 +102,16 @@ a2roffsu(const char *src, struct roffsu *dst, enum rof * used for the actual width calculations. */ void -tblcalc(struct rofftbl *tbl, const struct tbl_span *sp) +tblcalc(struct rofftbl *tbl, const struct tbl_span *sp, + size_t offset, size_t rmargin) { + struct roffsu su; + const struct tbl_opts *opts; const struct tbl_dat *dp; struct roffcol *col; + size_t ewidth, xwidth; int spans; + int icol, maxcol, necol, nxcol, quirkcol; /* * Allocate the master column specifiers. These will hold the @@ -152,10 +120,11 @@ tblcalc(struct rofftbl *tbl, const struct tbl_span *sp */ assert(NULL == tbl->cols); - tbl->cols = mandoc_calloc - ((size_t)sp->opts->cols, sizeof(struct roffcol)); + tbl->cols = mandoc_calloc((size_t)sp->opts->cols, + sizeof(struct roffcol)); + opts = sp->opts; - for ( ; sp; sp = sp->next) { + for (maxcol = -1; sp; sp = sp->next) { if (TBL_SPAN_DATA != sp->pos) continue; spans = 1; @@ -170,68 +139,179 @@ tblcalc(struct rofftbl *tbl, const struct tbl_span *sp spans = dp->spans; if (1 < spans) continue; - assert(dp->layout); - col = &tbl->cols[dp->layout->head->ident]; - tblcalc_data(tbl, col, sp->opts, dp); + icol = dp->layout->col; + if (maxcol < icol) + maxcol = icol; + col = tbl->cols + icol; + col->flags |= dp->layout->flags; + if (dp->layout->flags & TBL_CELL_WIGN) + continue; + if (dp->layout->wstr != NULL && + dp->layout->width == 0 && + a2roffsu(dp->layout->wstr, &su, SCALE_EN) + != NULL) + dp->layout->width = + (*tbl->sulen)(&su, tbl->arg); + if (col->width < dp->layout->width) + col->width = dp->layout->width; + tblcalc_data(tbl, col, opts, dp, + dp->block == 0 ? 0 : + dp->layout->width ? dp->layout->width : + rmargin ? rmargin / (sp->opts->cols + 1) : 0); } } + + /* + * Count columns to equalize and columns to maximize. + * Find maximum width of the columns to equalize. + * Find total width of the columns *not* to maximize. + */ + + necol = nxcol = 0; + ewidth = xwidth = 0; + for (icol = 0; icol <= maxcol; icol++) { + col = tbl->cols + icol; + if (col->flags & TBL_CELL_EQUAL) { + necol++; + if (ewidth < col->width) + ewidth = col->width; + } + if (col->flags & TBL_CELL_WMAX) + nxcol++; + else + xwidth += col->width; + } + + /* + * Equalize columns, if requested for any of them. + * Update total width of the columns not to maximize. + */ + + if (necol) { + for (icol = 0; icol <= maxcol; icol++) { + col = tbl->cols + icol; + if ( ! (col->flags & TBL_CELL_EQUAL)) + continue; + if (col->width == ewidth) + continue; + if (nxcol && rmargin) + xwidth += ewidth - col->width; + col->width = ewidth; + } + } + + /* + * If there are any columns to maximize, find the total + * available width, deducting 3n margins between columns. + * Distribute the available width evenly. + */ + + if (nxcol && rmargin) { + xwidth += 3*maxcol + + (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ? + 2 : !!opts->lvert + !!opts->rvert); + if (rmargin <= offset + xwidth) + return; + xwidth = rmargin - offset - xwidth; + + /* + * Emulate a bug in GNU tbl width calculation that + * manifests itself for large numbers of x-columns. + * Emulating it for 5 x-columns gives identical + * behaviour for up to 6 x-columns. + */ + + if (nxcol == 5) { + quirkcol = xwidth % nxcol + 2; + if (quirkcol != 3 && quirkcol != 4) + quirkcol = -1; + } else + quirkcol = -1; + + necol = 0; + ewidth = 0; + for (icol = 0; icol <= maxcol; icol++) { + col = tbl->cols + icol; + if ( ! (col->flags & TBL_CELL_WMAX)) + continue; + col->width = (double)xwidth * ++necol / nxcol + - ewidth + 0.4995; + if (necol == quirkcol) + col->width--; + ewidth += col->width; + } + } } static void tblcalc_data(struct rofftbl *tbl, struct roffcol *col, - const struct tbl_opts *opts, const struct tbl_dat *dp) + const struct tbl_opts *opts, const struct tbl_dat *dp, size_t mw) { size_t sz; /* Branch down into data sub-types. */ switch (dp->layout->pos) { - case (TBL_CELL_HORIZ): - /* FALLTHROUGH */ - case (TBL_CELL_DHORIZ): + case TBL_CELL_HORIZ: + case TBL_CELL_DHORIZ: sz = (*tbl->len)(1, tbl->arg); if (col->width < sz) col->width = sz; break; - case (TBL_CELL_LONG): - /* FALLTHROUGH */ - case (TBL_CELL_CENTRE): - /* FALLTHROUGH */ - case (TBL_CELL_LEFT): - /* FALLTHROUGH */ - case (TBL_CELL_RIGHT): - tblcalc_literal(tbl, col, dp); + case TBL_CELL_LONG: + case TBL_CELL_CENTRE: + case TBL_CELL_LEFT: + case TBL_CELL_RIGHT: + tblcalc_literal(tbl, col, dp, mw); break; - case (TBL_CELL_NUMBER): + case TBL_CELL_NUMBER: tblcalc_number(tbl, col, opts, dp); break; - case (TBL_CELL_DOWN): + case TBL_CELL_DOWN: break; default: abort(); - /* NOTREACHED */ } } static void tblcalc_literal(struct rofftbl *tbl, struct roffcol *col, - const struct tbl_dat *dp) + const struct tbl_dat *dp, size_t mw) { - size_t sz; - const char *str; + const char *str; /* Beginning of the first line. */ + const char *beg; /* Beginning of the current line. */ + char *end; /* End of the current line. */ + size_t lsz; /* Length of the current line. */ + size_t wsz; /* Length of the current word. */ - str = dp->string ? dp->string : ""; - sz = (*tbl->slen)(str, tbl->arg); - - if (col->width < sz) - col->width = sz; + if (dp->string == NULL || *dp->string == '\0') + return; + str = mw ? mandoc_strdup(dp->string) : dp->string; + lsz = 0; + for (beg = str; beg != NULL && *beg != '\0'; beg = end) { + end = mw ? strchr(beg, ' ') : NULL; + if (end != NULL) { + *end++ = '\0'; + while (*end == ' ') + end++; + } + wsz = (*tbl->slen)(beg, tbl->arg); + if (mw && lsz && lsz + 1 + wsz <= mw) + lsz += 1 + wsz; + else + lsz = wsz; + if (col->width < lsz) + col->width = lsz; + } + if (mw) + free((void *)str); } static void tblcalc_number(struct rofftbl *tbl, struct roffcol *col, const struct tbl_opts *opts, const struct tbl_dat *dp) { - int i; + int i; size_t sz, psz, ssz, d; const char *str; char *cp;