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Annotation of mandoc/demandoc.c, Revision 1.20

1.20    ! schwarze    1: /*     $Id: demandoc.c,v 1.19 2015/04/18 16:34:25 schwarze Exp $ */
1.1       kristaps    2: /*
                      3:  * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
                      4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17: #include "config.h"
1.11      schwarze   18:
                     19: #include <sys/types.h>
1.1       kristaps   20:
                     21: #include <assert.h>
1.4       kristaps   22: #include <ctype.h>
1.1       kristaps   23: #include <getopt.h>
                     24: #include <stdio.h>
                     25: #include <stdlib.h>
                     26: #include <string.h>
1.2       kristaps   27: #include <unistd.h>
1.1       kristaps   28:
1.16      schwarze   29: #include "roff.h"
1.1       kristaps   30: #include "man.h"
                     31: #include "mdoc.h"
                     32: #include "mandoc.h"
                     33:
1.4       kristaps   34: static void     pline(int, int *, int *, int);
1.17      schwarze   35: static void     pman(const struct roff_node *, int *, int *, int);
1.4       kristaps   36: static void     pmandoc(struct mparse *, int, const char *, int);
1.17      schwarze   37: static void     pmdoc(const struct roff_node *, int *, int *, int);
1.4       kristaps   38: static void     pstring(const char *, int, int *, int);
1.1       kristaps   39: static void     usage(void);
                     40:
                     41: static const char       *progname;
                     42:
                     43: int
                     44: main(int argc, char *argv[])
                     45: {
                     46:        struct mparse   *mp;
1.12      schwarze   47:        struct mchars   *mchars;
1.13      schwarze   48:        int              ch, fd, i, list;
1.1       kristaps   49:        extern int       optind;
                     50:
1.14      schwarze   51:        if (argc < 1)
                     52:                progname = "demandoc";
                     53:        else if ((progname = strrchr(argv[0], '/')) == NULL)
1.1       kristaps   54:                progname = argv[0];
                     55:        else
                     56:                ++progname;
                     57:
                     58:        mp = NULL;
1.4       kristaps   59:        list = 0;
1.1       kristaps   60:
1.4       kristaps   61:        while (-1 != (ch = getopt(argc, argv, "ikm:pw")))
1.1       kristaps   62:                switch (ch) {
1.4       kristaps   63:                case ('i'):
                     64:                        /* FALLTHROUGH */
                     65:                case ('k'):
                     66:                        /* FALLTHROUGH */
                     67:                case ('m'):
                     68:                        /* FALLTHROUGH */
                     69:                case ('p'):
                     70:                        break;
                     71:                case ('w'):
                     72:                        list = 1;
                     73:                        break;
1.1       kristaps   74:                default:
                     75:                        usage();
                     76:                        return((int)MANDOCLEVEL_BADARG);
                     77:                }
                     78:
                     79:        argc -= optind;
                     80:        argv += optind;
                     81:
1.12      schwarze   82:        mchars = mchars_alloc();
1.13      schwarze   83:        mp = mparse_alloc(MPARSE_SO, MANDOCLEVEL_BADARG, NULL, mchars, NULL);
1.1       kristaps   84:        assert(mp);
                     85:
1.14      schwarze   86:        if (argc < 1)
1.4       kristaps   87:                pmandoc(mp, STDIN_FILENO, "<stdin>", list);
1.1       kristaps   88:
                     89:        for (i = 0; i < argc; i++) {
                     90:                mparse_reset(mp);
1.13      schwarze   91:                if (mparse_open(mp, &fd, argv[i]) != MANDOCLEVEL_OK) {
                     92:                        perror(argv[i]);
                     93:                        continue;
                     94:                }
                     95:                pmandoc(mp, fd, argv[i], list);
1.1       kristaps   96:        }
                     97:
                     98:        mparse_free(mp);
1.12      schwarze   99:        mchars_free(mchars);
1.3       kristaps  100:        return((int)MANDOCLEVEL_OK);
1.1       kristaps  101: }
                    102:
                    103: static void
                    104: usage(void)
                    105: {
                    106:
1.4       kristaps  107:        fprintf(stderr, "usage: %s [-w] [files...]\n", progname);
1.1       kristaps  108: }
                    109:
                    110: static void
1.4       kristaps  111: pmandoc(struct mparse *mp, int fd, const char *fn, int list)
1.1       kristaps  112: {
1.18      schwarze  113:        struct roff_man *man;
1.1       kristaps  114:        int              line, col;
                    115:
1.13      schwarze  116:        mparse_readfd(mp, fd, fn);
1.19      schwarze  117:        mparse_result(mp, &man, NULL);
1.1       kristaps  118:        line = 1;
                    119:        col = 0;
                    120:
1.19      schwarze  121:        if (man == NULL)
                    122:                return;
                    123:        if (man->macroset == MACROSET_MDOC)
1.20    ! schwarze  124:                pmdoc(man->first->child, &line, &col, list);
1.19      schwarze  125:        else
1.20    ! schwarze  126:                pman(man->first->child, &line, &col, list);
1.1       kristaps  127:
1.5       kristaps  128:        if ( ! list)
                    129:                putchar('\n');
1.1       kristaps  130: }
                    131:
                    132: /*
                    133:  * Strip the escapes out of a string, emitting the results.
                    134:  */
                    135: static void
1.4       kristaps  136: pstring(const char *p, int col, int *colp, int list)
1.1       kristaps  137: {
                    138:        enum mandoc_esc  esc;
1.6       kristaps  139:        const char      *start, *end;
1.5       kristaps  140:        int              emit;
                    141:
                    142:        /*
                    143:         * Print as many column spaces til we achieve parity with the
                    144:         * input document.
                    145:         */
                    146:
                    147: again:
                    148:        if (list && '\0' != *p) {
                    149:                while (isspace((unsigned char)*p))
                    150:                        p++;
                    151:
                    152:                while ('\'' == *p || '(' == *p || '"' == *p)
                    153:                        p++;
                    154:
                    155:                emit = isalpha((unsigned char)p[0]) &&
                    156:                        isalpha((unsigned char)p[1]);
                    157:
                    158:                for (start = p; '\0' != *p; p++)
                    159:                        if ('\\' == *p) {
                    160:                                p++;
                    161:                                esc = mandoc_escape(&p, NULL, NULL);
                    162:                                if (ESCAPE_ERROR == esc)
                    163:                                        return;
                    164:                                emit = 0;
                    165:                        } else if (isspace((unsigned char)*p))
                    166:                                break;
                    167:
1.6       kristaps  168:                end = p - 1;
                    169:
                    170:                while (end > start)
1.15      schwarze  171:                        if ('.' == *end || ',' == *end ||
1.6       kristaps  172:                                        '\'' == *end || '"' == *end ||
                    173:                                        ')' == *end || '!' == *end ||
                    174:                                        '?' == *end || ':' == *end ||
                    175:                                        ';' == *end)
                    176:                                end--;
                    177:                        else
                    178:                                break;
                    179:
                    180:                if (emit && end - start >= 1) {
                    181:                        for ( ; start <= end; start++)
1.5       kristaps  182:                                if (ASCII_HYPH == *start)
                    183:                                        putchar('-');
                    184:                                else
                    185:                                        putchar((unsigned char)*start);
                    186:                        putchar('\n');
                    187:                }
                    188:
                    189:                if (isspace((unsigned char)*p))
                    190:                        goto again;
                    191:
                    192:                return;
                    193:        }
1.1       kristaps  194:
                    195:        while (*colp < col) {
                    196:                putchar(' ');
                    197:                (*colp)++;
                    198:        }
                    199:
1.5       kristaps  200:        /*
                    201:         * Print the input word, skipping any special characters.
                    202:         */
1.15      schwarze  203:        while ('\0' != *p)
1.1       kristaps  204:                if ('\\' == *p) {
                    205:                        p++;
                    206:                        esc = mandoc_escape(&p, NULL, NULL);
                    207:                        if (ESCAPE_ERROR == esc)
1.4       kristaps  208:                                break;
1.1       kristaps  209:                } else {
1.3       kristaps  210:                        putchar((unsigned char )*p++);
1.1       kristaps  211:                        (*colp)++;
                    212:                }
                    213: }
                    214:
                    215: static void
1.4       kristaps  216: pline(int line, int *linep, int *col, int list)
1.1       kristaps  217: {
1.5       kristaps  218:
                    219:        if (list)
                    220:                return;
                    221:
                    222:        /*
                    223:         * Print out as many lines as needed to reach parity with the
1.15      schwarze  224:         * original input.
1.5       kristaps  225:         */
1.1       kristaps  226:
                    227:        while (*linep < line) {
                    228:                putchar('\n');
                    229:                (*linep)++;
                    230:        }
1.4       kristaps  231:
1.1       kristaps  232:        *col = 0;
                    233: }
                    234:
                    235: static void
1.17      schwarze  236: pmdoc(const struct roff_node *p, int *line, int *col, int list)
1.1       kristaps  237: {
                    238:
                    239:        for ( ; p; p = p->next) {
                    240:                if (MDOC_LINE & p->flags)
1.4       kristaps  241:                        pline(p->line, line, col, list);
1.16      schwarze  242:                if (ROFFT_TEXT == p->type)
1.4       kristaps  243:                        pstring(p->string, p->pos, col, list);
1.15      schwarze  244:                if (p->child)
1.4       kristaps  245:                        pmdoc(p->child, line, col, list);
1.1       kristaps  246:        }
                    247: }
                    248:
                    249: static void
1.17      schwarze  250: pman(const struct roff_node *p, int *line, int *col, int list)
1.1       kristaps  251: {
                    252:
                    253:        for ( ; p; p = p->next) {
                    254:                if (MAN_LINE & p->flags)
1.4       kristaps  255:                        pline(p->line, line, col, list);
1.16      schwarze  256:                if (ROFFT_TEXT == p->type)
1.4       kristaps  257:                        pstring(p->string, p->pos, col, list);
1.15      schwarze  258:                if (p->child)
1.4       kristaps  259:                        pman(p->child, line, col, list);
1.1       kristaps  260:        }
                    261: }

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