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Annotation of mandoc/out.c, Revision 1.51

1.51    ! schwarze    1: /*     $Id: out.c,v 1.50 2014/08/10 23:54:41 schwarze Exp $ */
1.1       kristaps    2: /*
1.36      schwarze    3:  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.37      schwarze    4:  * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
1.12      kristaps   18: #include "config.h"
                     19:
1.1       kristaps   20: #include <sys/types.h>
                     21:
1.6       kristaps   22: #include <assert.h>
1.1       kristaps   23: #include <ctype.h>
1.3       kristaps   24: #include <stdio.h>
1.1       kristaps   25: #include <stdlib.h>
1.6       kristaps   26: #include <string.h>
1.7       kristaps   27: #include <time.h>
1.1       kristaps   28:
1.47      schwarze   29: #include "mandoc_aux.h"
1.30      kristaps   30: #include "mandoc.h"
1.1       kristaps   31: #include "out.h"
                     32:
1.30      kristaps   33: static void    tblcalc_data(struct rofftbl *, struct roffcol *,
1.45      schwarze   34:                        const struct tbl_opts *, const struct tbl_dat *);
1.30      kristaps   35: static void    tblcalc_literal(struct rofftbl *, struct roffcol *,
                     36:                        const struct tbl_dat *);
                     37: static void    tblcalc_number(struct rofftbl *, struct roffcol *,
1.45      schwarze   38:                        const struct tbl_opts *, const struct tbl_dat *);
1.30      kristaps   39:
1.48      schwarze   40:
                     41: /*
1.3       kristaps   42:  * Convert a `scaling unit' to a consistent form, or fail.  Scaling
1.5       kristaps   43:  * units are documented in groff.7, mdoc.7, man.7.
1.3       kristaps   44:  */
1.1       kristaps   45: int
1.5       kristaps   46: a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
1.1       kristaps   47: {
1.4       kristaps   48:        char             buf[BUFSIZ], hasd;
1.1       kristaps   49:        int              i;
1.3       kristaps   50:        enum roffscale   unit;
1.1       kristaps   51:
1.5       kristaps   52:        if ('\0' == *src)
                     53:                return(0);
                     54:
1.4       kristaps   55:        i = hasd = 0;
                     56:
                     57:        switch (*src) {
1.48      schwarze   58:        case '+':
1.4       kristaps   59:                src++;
                     60:                break;
1.48      schwarze   61:        case '-':
1.4       kristaps   62:                buf[i++] = *src++;
                     63:                break;
                     64:        default:
                     65:                break;
                     66:        }
                     67:
1.5       kristaps   68:        if ('\0' == *src)
                     69:                return(0);
                     70:
1.4       kristaps   71:        while (i < BUFSIZ) {
1.42      kristaps   72:                if ( ! isdigit((unsigned char)*src)) {
1.4       kristaps   73:                        if ('.' != *src)
                     74:                                break;
                     75:                        else if (hasd)
                     76:                                break;
                     77:                        else
                     78:                                hasd = 1;
                     79:                }
                     80:                buf[i++] = *src++;
                     81:        }
1.1       kristaps   82:
1.3       kristaps   83:        if (BUFSIZ == i || (*src && *(src + 1)))
1.1       kristaps   84:                return(0);
                     85:
1.4       kristaps   86:        buf[i] = '\0';
1.1       kristaps   87:
1.3       kristaps   88:        switch (*src) {
1.48      schwarze   89:        case 'c':
1.3       kristaps   90:                unit = SCALE_CM;
                     91:                break;
1.48      schwarze   92:        case 'i':
1.3       kristaps   93:                unit = SCALE_IN;
                     94:                break;
1.48      schwarze   95:        case 'P':
1.3       kristaps   96:                unit = SCALE_PC;
                     97:                break;
1.48      schwarze   98:        case 'p':
1.3       kristaps   99:                unit = SCALE_PT;
                    100:                break;
1.48      schwarze  101:        case 'f':
1.3       kristaps  102:                unit = SCALE_FS;
                    103:                break;
1.48      schwarze  104:        case 'v':
1.3       kristaps  105:                unit = SCALE_VS;
                    106:                break;
1.48      schwarze  107:        case 'm':
1.3       kristaps  108:                unit = SCALE_EM;
                    109:                break;
1.48      schwarze  110:        case '\0':
1.5       kristaps  111:                if (SCALE_MAX == def)
                    112:                        return(0);
1.51    ! schwarze  113:                unit = SCALE_EN;
1.5       kristaps  114:                break;
1.48      schwarze  115:        case 'u':
1.3       kristaps  116:                unit = SCALE_BU;
                    117:                break;
1.48      schwarze  118:        case 'M':
1.3       kristaps  119:                unit = SCALE_MM;
                    120:                break;
1.48      schwarze  121:        case 'n':
1.3       kristaps  122:                unit = SCALE_EN;
                    123:                break;
                    124:        default:
1.1       kristaps  125:                return(0);
1.3       kristaps  126:        }
1.1       kristaps  127:
1.23      kristaps  128:        /* FIXME: do this in the caller. */
1.49      schwarze  129:        if ((dst->scale = atof(buf)) < 0.0)
                    130:                dst->scale = 0.0;
1.3       kristaps  131:        dst->unit = unit;
                    132:        return(1);
1.8       kristaps  133: }
1.30      kristaps  134:
                    135: /*
                    136:  * Calculate the abstract widths and decimal positions of columns in a
                    137:  * table.  This routine allocates the columns structures then runs over
                    138:  * all rows and cells in the table.  The function pointers in "tbl" are
                    139:  * used for the actual width calculations.
                    140:  */
                    141: void
                    142: tblcalc(struct rofftbl *tbl, const struct tbl_span *sp)
                    143: {
                    144:        const struct tbl_dat    *dp;
                    145:        struct roffcol          *col;
1.43      schwarze  146:        int                      spans;
1.30      kristaps  147:
                    148:        /*
                    149:         * Allocate the master column specifiers.  These will hold the
                    150:         * widths and decimal positions for all cells in the column.  It
                    151:         * must be freed and nullified by the caller.
                    152:         */
                    153:
                    154:        assert(NULL == tbl->cols);
1.48      schwarze  155:        tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
                    156:            sizeof(struct roffcol));
1.30      kristaps  157:
                    158:        for ( ; sp; sp = sp->next) {
                    159:                if (TBL_SPAN_DATA != sp->pos)
                    160:                        continue;
1.43      schwarze  161:                spans = 1;
1.30      kristaps  162:                /*
                    163:                 * Account for the data cells in the layout, matching it
                    164:                 * to data cells in the data section.
                    165:                 */
                    166:                for (dp = sp->first; dp; dp = dp->next) {
1.43      schwarze  167:                        /* Do not used spanned cells in the calculation. */
                    168:                        if (0 < --spans)
                    169:                                continue;
                    170:                        spans = dp->spans;
                    171:                        if (1 < spans)
                    172:                                continue;
1.33      kristaps  173:                        assert(dp->layout);
1.30      kristaps  174:                        col = &tbl->cols[dp->layout->head->ident];
1.45      schwarze  175:                        tblcalc_data(tbl, col, sp->opts, dp);
1.30      kristaps  176:                }
                    177:        }
                    178: }
                    179:
                    180: static void
                    181: tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
1.45      schwarze  182:                const struct tbl_opts *opts, const struct tbl_dat *dp)
1.30      kristaps  183: {
                    184:        size_t           sz;
                    185:
                    186:        /* Branch down into data sub-types. */
                    187:
                    188:        switch (dp->layout->pos) {
1.48      schwarze  189:        case TBL_CELL_HORIZ:
1.30      kristaps  190:                /* FALLTHROUGH */
1.48      schwarze  191:        case TBL_CELL_DHORIZ:
1.30      kristaps  192:                sz = (*tbl->len)(1, tbl->arg);
                    193:                if (col->width < sz)
                    194:                        col->width = sz;
                    195:                break;
1.48      schwarze  196:        case TBL_CELL_LONG:
1.30      kristaps  197:                /* FALLTHROUGH */
1.48      schwarze  198:        case TBL_CELL_CENTRE:
1.30      kristaps  199:                /* FALLTHROUGH */
1.48      schwarze  200:        case TBL_CELL_LEFT:
1.30      kristaps  201:                /* FALLTHROUGH */
1.48      schwarze  202:        case TBL_CELL_RIGHT:
1.30      kristaps  203:                tblcalc_literal(tbl, col, dp);
                    204:                break;
1.48      schwarze  205:        case TBL_CELL_NUMBER:
1.45      schwarze  206:                tblcalc_number(tbl, col, opts, dp);
1.35      kristaps  207:                break;
1.48      schwarze  208:        case TBL_CELL_DOWN:
1.30      kristaps  209:                break;
                    210:        default:
                    211:                abort();
                    212:                /* NOTREACHED */
                    213:        }
                    214: }
                    215:
                    216: static void
                    217: tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
                    218:                const struct tbl_dat *dp)
                    219: {
1.43      schwarze  220:        size_t           sz;
1.34      kristaps  221:        const char      *str;
1.30      kristaps  222:
1.34      kristaps  223:        str = dp->string ? dp->string : "";
                    224:        sz = (*tbl->slen)(str, tbl->arg);
                    225:
1.30      kristaps  226:        if (col->width < sz)
                    227:                col->width = sz;
                    228: }
                    229:
                    230: static void
                    231: tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
1.45      schwarze  232:                const struct tbl_opts *opts, const struct tbl_dat *dp)
1.30      kristaps  233: {
1.48      schwarze  234:        int              i;
1.34      kristaps  235:        size_t           sz, psz, ssz, d;
                    236:        const char      *str;
1.30      kristaps  237:        char            *cp;
                    238:        char             buf[2];
                    239:
                    240:        /*
                    241:         * First calculate number width and decimal place (last + 1 for
1.43      schwarze  242:         * non-decimal numbers).  If the stored decimal is subsequent to
1.30      kristaps  243:         * ours, make our size longer by that difference
                    244:         * (right-"shifting"); similarly, if ours is subsequent the
                    245:         * stored, then extend the stored size by the difference.
                    246:         * Finally, re-assign the stored values.
                    247:         */
                    248:
1.34      kristaps  249:        str = dp->string ? dp->string : "";
                    250:        sz = (*tbl->slen)(str, tbl->arg);
1.30      kristaps  251:
1.34      kristaps  252:        /* FIXME: TBL_DATA_HORIZ et al.? */
1.30      kristaps  253:
1.45      schwarze  254:        buf[0] = opts->decimal;
1.30      kristaps  255:        buf[1] = '\0';
                    256:
                    257:        psz = (*tbl->slen)(buf, tbl->arg);
                    258:
1.45      schwarze  259:        if (NULL != (cp = strrchr(str, opts->decimal))) {
1.30      kristaps  260:                buf[1] = '\0';
                    261:                for (ssz = 0, i = 0; cp != &str[i]; i++) {
                    262:                        buf[0] = str[i];
                    263:                        ssz += (*tbl->slen)(buf, tbl->arg);
                    264:                }
                    265:                d = ssz + psz;
                    266:        } else
                    267:                d = sz + psz;
                    268:
                    269:        /* Adjust the settings for this column. */
                    270:
                    271:        if (col->decimal > d) {
                    272:                sz += col->decimal - d;
                    273:                d = col->decimal;
                    274:        } else
                    275:                col->width += d - col->decimal;
                    276:
                    277:        if (sz > col->width)
                    278:                col->width = sz;
                    279:        if (d > col->decimal)
                    280:                col->decimal = d;
                    281: }

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