tr2ps/common.c

   1 #include <ctype.h>
   2 #include <fcntl.h>
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <stdarg.h>
   6 #include <string.h>
   7 #include <unistd.h>
   8 #include <sys/stat.h>
   9 #include "common.h"
  10 #include "comments.h"
  11 #include "path.h"
  12
  13 struct strtab charcode[256] = {
  14         {4, "\\000"}, {4, "\\001"}, {4, "\\002"}, {4, "\\003"},
  15         {4, "\\004"}, {4, "\\005"}, {4, "\\006"}, {4, "\\007"},
  16         {4, "\\010"}, {4, "\\011"}, {4, "\\012"}, {4, "\\013"},
  17         {4, "\\014"}, {4, "\\015"}, {4, "\\016"}, {4, "\\017"},
  18         {4, "\\020"}, {4, "\\021"}, {4, "\\022"}, {4, "\\023"},
  19         {4, "\\024"}, {4, "\\025"}, {4, "\\026"}, {4, "\\027"},
  20         {4, "\\030"}, {4, "\\031"}, {4, "\\032"}, {4, "\\033"},
  21         {4, "\\034"}, {4, "\\035"}, {4, "\\036"}, {4, "\\037"},
  22         {1, " "}, {1, "!"}, {1, "\""}, {1, "#"},
  23         {1, "$"}, {1, "%"}, {1, "&"}, {1, "'"},
  24         {2, "\\("}, {2, "\\)"}, {1, "*"}, {1, "+"},
  25         {1, ","}, {1, "-"}, {1, "."}, {1, "/"},
  26         {1, "0"}, {1, "1"}, {1, "2"}, {1, "3"},
  27         {1, "4"}, {1, "5"}, {1, "6"}, {1, "7"},
  28         {1, "8"}, {1, "9"}, {1, ":"}, {1, ";"},
  29         {1, "<"}, {1, "="}, {1, ">"}, {1, "?"},
  30         {1, "@"}, {1, "A"}, {1, "B"}, {1, "C"},
  31         {1, "D"}, {1, "E"}, {1, "F"}, {1, "G"},
  32         {1, "H"}, {1, "I"}, {1, "J"}, {1, "K"},
  33         {1, "L"}, {1, "M"}, {1, "N"}, {1, "O"},
  34         {1, "P"}, {1, "Q"}, {1, "R"}, {1, "S"},
  35         {1, "T"}, {1, "U"}, {1, "V"}, {1, "W"},
  36         {1, "X"}, {1, "Y"}, {1, "Z"}, {1, "["},
  37         {2, "\\\\"}, {1, "]"}, {1, "^"}, {1, "_"},
  38         {1, "`"}, {1, "a"}, {1, "b"}, {1, "c"},
  39         {1, "d"}, {1, "e"}, {1, "f"}, {1, "g"},
  40         {1, "h"}, {1, "i"}, {1, "j"}, {1, "k"},
  41         {1, "l"}, {1, "m"}, {1, "n"}, {1, "o"},
  42         {1, "p"}, {1, "q"}, {1, "r"}, {1, "s"},
  43         {1, "t"}, {1, "u"}, {1, "v"}, {1, "w"},
  44         {1, "x"}, {1, "y"}, {1, "z"}, {1, "{"},
  45         {1, "|"}, {1, "}"}, {1, "~"}, {4, "\\177"},
  46         {4, "\\200"}, {4, "\\201"}, {4, "\\202"}, {4, "\\203"},
  47         {4, "\\204"}, {4, "\\205"}, {4, "\\206"}, {4, "\\207"},
  48         {4, "\\210"}, {4, "\\211"}, {4, "\\212"}, {4, "\\213"},
  49         {4, "\\214"}, {4, "\\215"}, {4, "\\216"}, {4, "\\217"},
  50         {4, "\\220"}, {4, "\\221"}, {4, "\\222"}, {4, "\\223"},
  51         {4, "\\224"}, {4, "\\225"}, {4, "\\226"}, {4, "\\227"},
  52         {4, "\\230"}, {4, "\\231"}, {4, "\\232"}, {4, "\\233"},
  53         {4, "\\234"}, {4, "\\235"}, {4, "\\236"}, {4, "\\237"},
  54         {4, "\\240"}, {4, "\\241"}, {4, "\\242"}, {4, "\\243"},
  55         {4, "\\244"}, {4, "\\245"}, {4, "\\246"}, {4, "\\247"},
  56         {4, "\\250"}, {4, "\\251"}, {4, "\\252"}, {4, "\\253"},
  57         {4, "\\254"}, {4, "\\255"}, {4, "\\256"}, {4, "\\257"},
  58         {4, "\\260"}, {4, "\\261"}, {4, "\\262"}, {4, "\\263"},
  59         {4, "\\264"}, {4, "\\265"}, {4, "\\266"}, {4, "\\267"},
  60         {4, "\\270"}, {4, "\\271"}, {4, "\\272"}, {4, "\\273"},
  61         {4, "\\274"}, {4, "\\275"}, {4, "\\276"}, {4, "\\277"},
  62         {4, "\\300"}, {4, "\\301"}, {4, "\\302"}, {4, "\\303"},
  63         {4, "\\304"}, {4, "\\305"}, {4, "\\306"}, {4, "\\307"},
  64         {4, "\\310"}, {4, "\\311"}, {4, "\\312"}, {4, "\\313"},
  65         {4, "\\314"}, {4, "\\315"}, {4, "\\316"}, {4, "\\317"},
  66         {4, "\\320"}, {4, "\\321"}, {4, "\\322"}, {4, "\\323"},
  67         {4, "\\324"}, {4, "\\325"}, {4, "\\326"}, {4, "\\327"},
  68         {4, "\\330"}, {4, "\\331"}, {4, "\\332"}, {4, "\\333"},
  69         {4, "\\334"}, {4, "\\335"}, {4, "\\336"}, {4, "\\337"},
  70         {4, "\\340"}, {4, "\\341"}, {4, "\\342"}, {4, "\\343"},
  71         {4, "\\344"}, {4, "\\345"}, {4, "\\346"}, {4, "\\347"},
  72         {4, "\\350"}, {4, "\\351"}, {4, "\\352"}, {4, "\\353"},
  73         {4, "\\354"}, {4, "\\355"}, {4, "\\356"}, {4, "\\357"},
  74         {4, "\\360"}, {4, "\\361"}, {4, "\\362"}, {4, "\\363"},
  75         {4, "\\364"}, {4, "\\365"}, {4, "\\366"}, {4, "\\367"},
  76         {4, "\\370"}, {4, "\\371"}, {4, "\\372"}, {4, "\\373"},
  77         {4, "\\374"}, {4, "\\375"}, {4, "\\376"}, {4, "\\377"}
  78 };
  79
  80 static int in_string;           /* inside the parenthesis before w command */
  81 static int in_byname;           /* inside the brackets before g command */
  82 int char_no = 0;
  83 int line_no = 0;
  84 int page_no = 0;                /* page number in a document */
  85 int pages_printed = 0;
  86
  87 static struct {
  88         int beg;
  89         int end;
  90 } pplist[128];          /* list of pages to print */
  91 static int pplist_cnt;
  92
  93 void pagelist(char *list)
  94 {
  95         char *next, *dash;
  96
  97         while (list && *list) {
  98                 next = strchr(list, ',');
  99                 dash = strchr(list, '-');
 100                 pplist[pplist_cnt].beg = atoi(list);
 101                 if (dash && (!next || dash < next))
 102                         pplist[pplist_cnt].end = atoi(dash + 1);
 103                 else
 104                         pplist[pplist_cnt].end = atoi(list);
 105                 list = next ? next + 1 : NULL;
 106                 pplist_cnt++;
 107         }
 108 }
 109
 110 int pageon(void)
 111 {
 112         extern int debug;
 113         static int _debug;              /* previous value of debug */
 114         int i;
 115
 116         for (i = 0; i < pplist_cnt; i++)
 117                 if (page_no >= pplist[i].beg && page_no <= pplist[i].end)
 118                         break;
 119
 120         if (pplist_cnt == 0 && page_no != 0 || i < pplist_cnt) {
 121                 if (_debug && !debug) {
 122                         _debug = FALSE;
 123                         debug = TRUE;
 124                 }
 125                 return 1;       /* no page list, print all pages */
 126         } else {
 127                 if (!_debug && debug) {
 128                         _debug = TRUE;
 129                         debug = FALSE;
 130                 }
 131                 return 0;
 132         }
 133 }
 134
 135 static int stringhpos, stringvpos;
 136
 137 static void startstring(void)
 138 {
 139         if (in_byname)
 140                 endstring();
 141         if (!in_string) {
 142                 stringhpos = hpos;
 143                 stringvpos = vpos;
 144                 if (pageon())
 145                         fprintf(fout, "(");
 146                 in_string = 1;
 147         }
 148 }
 149
 150 static void startbyname(void)
 151 {
 152         if (in_string)
 153                 endstring();
 154         if (!in_byname) {
 155                 stringhpos = hpos;
 156                 stringvpos = vpos;
 157                 if (pageon())
 158                         fprintf(fout, "[");
 159                 in_byname = 1;
 160         }
 161 }
 162
 163 void endstring(void)
 164 {
 165         if (in_string) {
 166                 if (pageon())
 167                         fprintf(fout, ") %d %d w\n", stringhpos, stringvpos);
 168                 in_string = 0;
 169         }
 170         if (in_byname) {
 171                 if (pageon())
 172                         fprintf(fout, "] %d %d g\n", stringhpos, stringvpos);
 173                 in_byname = 0;
 174         }
 175 }
 176
 177 int isinstring(void)
 178 {
 179         return in_string;
 180 }
 181
 182 void showglyph(char *s)
 183 {
 184         if (!in_string)
 185                 startstring();
 186         fprintf(fout, "%s", s);
 187 }
 188
 189 void showglyph_byname(char *s)
 190 {
 191         if (!in_byname)
 192                 startbyname();
 193         fprintf(fout, "/%s", s);
 194 }
 195
 196 void startpage(void)
 197 {
 198         ++char_no;
 199         ++line_no;
 200         ++page_no;
 201         if (pageon()) {
 202                 ++pages_printed;
 203                 fprintf(fout, "%s %d %d\n", PAGE, page_no, pages_printed);
 204                 fprintf(fout, "/saveobj save def\n");
 205                 fprintf(fout, "mark\n");
 206                 fprintf(fout, "%d pagesetup\n", pages_printed);
 207         }
 208 }
 209
 210 void endpage(void)
 211 {
 212         endstring();
 213         curpostfontid = -1;
 214         line_no = 0;
 215         char_no = 0;
 216         if (pageon()) {
 217                 fprintf(fout, "cleartomark\n");
 218                 fprintf(fout, "showpage\n");
 219                 fprintf(fout, "saveobj restore\n");
 220                 fprintf(fout, "%s %d %d\n", ENDPAGE, page_no, pages_printed);
 221         }
 222 }
 223
 224 /* This was taken from postprint */
 225
 226 int cat(char *filename)
 227 {
 228         int n;
 229         int fd;
 230         static char buf[1 << 20];
 231
 232         if ((fd = open(filename, O_RDONLY)) < 0)
 233                 return 1;
 234         while ((n = read(fd, buf, sizeof(buf))) > 0)
 235                 if (fwrite(buf, n, 1, fout) < 0)
 236                         break;
 237         close(fd);
 238         if (n != 0)
 239                 return 1;
 240         return 0;
 241 }
 242
 243 static char *errorstrings[] = {
 244         "",     /* NONE */
 245         "WARNING",
 246         "FATAL"
 247 };
 248
 249 char *programname;
 250 char *inputfilename = "<stdin>";
 251 int inputlineno;
 252
 253 void error(int errtype, char *fmt, ...)
 254 {
 255         va_list arg;
 256
 257         fprintf(stderr, "%s: %s:%d :%s: ", programname,
 258                 inputfilename, inputlineno, errorstrings[errtype]);
 259         va_start(arg, fmt);
 260         vfprintf(stderr, fmt, arg);
 261         va_end(arg);
 262         if (errtype == FATAL)
 263                 exit(1);
 264 }