demandoc.c

   1 /*      $Id: demandoc.c,v 1.28 2017/01/10 13:47:00 schwarze Exp $ */
   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"
  18
  19 #include <sys/types.h>
  20
  21 #include <assert.h>
  22 #include <ctype.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27
  28 #include "roff.h"
  29 #include "man.h"
  30 #include "mdoc.h"
  31 #include "mandoc.h"
  32
  33 static  void     pline(int, int *, int *, int);
  34 static  void     pman(const struct roff_node *, int *, int *, int);
  35 static  void     pmandoc(struct mparse *, int, const char *, int);
  36 static  void     pmdoc(const struct roff_node *, int *, int *, int);
  37 static  void     pstring(const char *, int, int *, int);
  38 static  void     usage(void);
  39
  40 static  const char       *progname;
  41
  42 int
  43 main(int argc, char *argv[])
  44 {
  45         struct mparse   *mp;
  46         int              ch, fd, i, list;
  47         extern int       optind;
  48
  49         if (argc < 1)
  50                 progname = "demandoc";
  51         else if ((progname = strrchr(argv[0], '/')) == NULL)
  52                 progname = argv[0];
  53         else
  54                 ++progname;
  55
  56         mp = NULL;
  57         list = 0;
  58
  59         while (-1 != (ch = getopt(argc, argv, "ikm:pw")))
  60                 switch (ch) {
  61                 case ('i'):
  62                         /* FALLTHROUGH */
  63                 case ('k'):
  64                         /* FALLTHROUGH */
  65                 case ('m'):
  66                         /* FALLTHROUGH */
  67                 case ('p'):
  68                         break;
  69                 case ('w'):
  70                         list = 1;
  71                         break;
  72                 default:
  73                         usage();
  74                         return (int)MANDOCLEVEL_BADARG;
  75                 }
  76
  77         argc -= optind;
  78         argv += optind;
  79
  80         mchars_alloc();
  81         mp = mparse_alloc(MPARSE_SO, MANDOCLEVEL_BADARG, NULL, NULL);
  82         assert(mp);
  83
  84         if (argc < 1)
  85                 pmandoc(mp, STDIN_FILENO, "<stdin>", list);
  86
  87         for (i = 0; i < argc; i++) {
  88                 mparse_reset(mp);
  89                 if ((fd = mparse_open(mp, argv[i])) == -1) {
  90                         perror(argv[i]);
  91                         continue;
  92                 }
  93                 pmandoc(mp, fd, argv[i], list);
  94         }
  95
  96         mparse_free(mp);
  97         mchars_free();
  98         return (int)MANDOCLEVEL_OK;
  99 }
 100
 101 static void
 102 usage(void)
 103 {
 104
 105         fprintf(stderr, "usage: %s [-w] [files...]\n", progname);
 106 }
 107
 108 static void
 109 pmandoc(struct mparse *mp, int fd, const char *fn, int list)
 110 {
 111         struct roff_man *man;
 112         int              line, col;
 113
 114         mparse_readfd(mp, fd, fn);
 115         close(fd);
 116         mparse_result(mp, &man, NULL);
 117         line = 1;
 118         col = 0;
 119
 120         if (man == NULL)
 121                 return;
 122         if (man->macroset == MACROSET_MDOC) {
 123                 mdoc_validate(man);
 124                 pmdoc(man->first->child, &line, &col, list);
 125         } else {
 126                 man_validate(man);
 127                 pman(man->first->child, &line, &col, list);
 128         }
 129
 130         if ( ! list)
 131                 putchar('\n');
 132 }
 133
 134 /*
 135  * Strip the escapes out of a string, emitting the results.
 136  */
 137 static void
 138 pstring(const char *p, int col, int *colp, int list)
 139 {
 140         enum mandoc_esc  esc;
 141         const char      *start, *end;
 142         int              emit;
 143
 144         /*
 145          * Print as many column spaces til we achieve parity with the
 146          * input document.
 147          */
 148
 149 again:
 150         if (list && '\0' != *p) {
 151                 while (isspace((unsigned char)*p))
 152                         p++;
 153
 154                 while ('\'' == *p || '(' == *p || '"' == *p)
 155                         p++;
 156
 157                 emit = isalpha((unsigned char)p[0]) &&
 158                         isalpha((unsigned char)p[1]);
 159
 160                 for (start = p; '\0' != *p; p++)
 161                         if ('\\' == *p) {
 162                                 p++;
 163                                 esc = mandoc_escape(&p, NULL, NULL);
 164                                 if (ESCAPE_ERROR == esc)
 165                                         return;
 166                                 emit = 0;
 167                         } else if (isspace((unsigned char)*p))
 168                                 break;
 169
 170                 end = p - 1;
 171
 172                 while (end > start)
 173                         if ('.' == *end || ',' == *end ||
 174                                         '\'' == *end || '"' == *end ||
 175                                         ')' == *end || '!' == *end ||
 176                                         '?' == *end || ':' == *end ||
 177                                         ';' == *end)
 178                                 end--;
 179                         else
 180                                 break;
 181
 182                 if (emit && end - start >= 1) {
 183                         for ( ; start <= end; start++)
 184                                 if (ASCII_HYPH == *start)
 185                                         putchar('-');
 186                                 else
 187                                         putchar((unsigned char)*start);
 188                         putchar('\n');
 189                 }
 190
 191                 if (isspace((unsigned char)*p))
 192                         goto again;
 193
 194                 return;
 195         }
 196
 197         while (*colp < col) {
 198                 putchar(' ');
 199                 (*colp)++;
 200         }
 201
 202         /*
 203          * Print the input word, skipping any special characters.
 204          */
 205         while ('\0' != *p)
 206                 if ('\\' == *p) {
 207                         p++;
 208                         esc = mandoc_escape(&p, NULL, NULL);
 209                         if (ESCAPE_ERROR == esc)
 210                                 break;
 211                 } else {
 212                         putchar((unsigned char )*p++);
 213                         (*colp)++;
 214                 }
 215 }
 216
 217 static void
 218 pline(int line, int *linep, int *col, int list)
 219 {
 220
 221         if (list)
 222                 return;
 223
 224         /*
 225          * Print out as many lines as needed to reach parity with the
 226          * original input.
 227          */
 228
 229         while (*linep < line) {
 230                 putchar('\n');
 231                 (*linep)++;
 232         }
 233
 234         *col = 0;
 235 }
 236
 237 static void
 238 pmdoc(const struct roff_node *p, int *line, int *col, int list)
 239 {
 240
 241         for ( ; p; p = p->next) {
 242                 if (NODE_LINE & p->flags)
 243                         pline(p->line, line, col, list);
 244                 if (ROFFT_TEXT == p->type)
 245                         pstring(p->string, p->pos, col, list);
 246                 if (p->child)
 247                         pmdoc(p->child, line, col, list);
 248         }
 249 }
 250
 251 static void
 252 pman(const struct roff_node *p, int *line, int *col, int list)
 253 {
 254
 255         for ( ; p; p = p->next) {
 256                 if (NODE_LINE & p->flags)
 257                         pline(p->line, line, col, list);
 258                 if (ROFFT_TEXT == p->type)
 259                         pstring(p->string, p->pos, col, list);
 260                 if (p->child)
 261                         pman(p->child, line, col, list);
 262         }
 263 }