git.distorted.org.uk Git - u/mdw/putty/blob - mkres.c

   1 /*
   2  *
   3  * Commands ...
   4  *
   5  * INIT(...)    : Set configs. (rowstep, totwidth, stdheight, stdwidth)
   6  * SPOS(V,H)    : Set current position.
   7  *
   8  * SCOL         : Standard column, for a single column, increment position
   9  * NEXT(V,H)    : increment postion by standard + (V,H)
  10  * COL(K,N)     : X,Y position for col K of N (default 1of [same as last])
  11  * SS           : Standard size of last COL (using number of cols).
  12  * ADJ(V,H)     : Adjust next COL or SCOL by (V,H)
  13  *
  14  * CURX(H)      : Current Xpos+H
  15  * CURY(V)      : Current Ypos+V
  16  *
  17  */
  18
  19 #include <stdio.h>
  20
  21 FILE * ifd;
  22 FILE * ofd;
  23
  24 char wordbuf[256];
  25
  26 #define T_INIT          100     /* Init the style of the values */
  27 #define T_SPOS          101     /* Set the current position */
  28 #define T_SCOL          102     /* Standard column COL(1,1), SS NEXT */
  29 #define T_NEXT          103     /* Next line */
  30 #define T_COL           104     /* Multi-column */
  31 #define T_SS            105     /* Standard Size */
  32 #define T_ADJ           106     /* Adjust next COL/SCOL */
  33 #define T_GRID          107     /* */
  34 #define T_GAP           108     /* */
  35
  36 #define T_CURX          120     /* Current X + offset */
  37 #define T_CURY          121     /* Current Y + offset */
  38
  39 #define T_SAVEPOSN      122     /* Save current status */
  40 #define T_RESTOREPOSN   123     /* Restore current status */
  41
  42
  43 struct keys {
  44    char * name;
  45    int token;
  46 } keywords[] = {
  47    {"INIT",             T_INIT,         },
  48    {"SPOS",             T_SPOS,         },
  49    {"SCOL",             T_SCOL,         },
  50    {"NEXT",             T_NEXT,         },
  51    {"COL",              T_COL,          },
  52    {"SS",               T_SS,           },
  53    {"ADJ",              T_ADJ,          },
  54    {"GRID",             T_GRID,         },
  55    {"GAP",              T_GAP,          },
  56    {"CURX",             T_CURX,         },
  57    {"CURY",             T_CURY,         },
  58    {"SAVEPOSN",         T_SAVEPOSN,     },
  59    {"RESTOREPOSN",      T_RESTOREPOSN,  },
  60    {0,0}
  61 };
  62
  63 struct statbuf {
  64    int token;
  65
  66    int curx;
  67    int cury;
  68    int cols;
  69
  70    int con_width;
  71    int con_height;
  72    int row_step;
  73    int tot_width;
  74
  75    int gutter;
  76
  77    int vadjust;
  78    int hadjust;
  79 }
  80    status, saved_status;
  81
  82 int ar_count, ar_val[10];
  83
  84 main(argc, argv)
  85 int argc;
  86 char ** argv;
  87 {
  88    int ch;
  89
  90    ifd = stdin; ofd = stdout;
  91
  92    while(!feof(ifd))
  93    {
  94       if (ferror(ifd))
  95       {
  96          fprintf(stderr, "Error reading input file\n");
  97          exit(1);
  98       }
  99
 100       if (readword() < 0) break;
 101
 102       if (check_keys() < 0)
 103       {
 104          fprintf(ofd, "%s", wordbuf);
 105          continue;
 106       }
 107
 108       /* To get here we have found one of our keywords, some words will
 109        * be followed by an argument.
 110        */
 111
 112       ar_count = 0;
 113
 114       while((ch = getc(ifd)) != EOF && isspace(ch) && ch != '\n')
 115          putc(ch, ofd);
 116
 117       if (ch == '(' )
 118       {
 119          for(;;)
 120          {
 121             ar_val[ar_count++] = get_number();
 122
 123             while((ch=getc(ifd)) != EOF && isspace(ch)) ;
 124             if (ch != ',') break;
 125          }
 126          if (ch == EOF) break;
 127       }
 128       else
 129          ungetc(ch, ifd);
 130
 131       /* Ok got args, now doit */
 132       execute_command();
 133    }
 134    exit(0);
 135 }
 136
 137 /* This is the lexer - not using lex(1) because this will have to
 138  * compile under windows.
 139  */
 140 int readword()
 141 {
 142    int ch;
 143    char *wp;
 144
 145 try_again:;  /* This is for "too big" words and strings. */
 146
 147    wp=wordbuf;
 148
 149    /* Find a word ... */
 150    while((ch=getc(ifd)) != EOF && !isalpha(ch) && ch != '"')
 151       putc(ch, ofd);
 152
 153    if (ch == '"')
 154    {
 155       putc(ch, ofd);
 156
 157       while((ch=getc(ifd)) != EOF && ch != '"')
 158          putc(ch, ofd);
 159       if (ch != EOF)
 160          putc(ch, ofd);
 161
 162       goto try_again;
 163    }
 164
 165    if (ch == EOF) return -1;
 166
 167    do
 168    {
 169       if (wp>=wordbuf+sizeof(wordbuf)-2)
 170       {
 171          *wp = 0;
 172          fprintf(ofd, "%s", wordbuf);
 173
 174          while(ch!=EOF && isalpha(ch))
 175          {
 176             putc(ch, ofd);
 177             ch=getc(ifd);
 178          }
 179          ungetc(ch, ifd);
 180
 181          goto try_again;
 182       }
 183       *wp++ = ch;
 184       ch = getc(ifd);
 185    }
 186    while(ch != EOF && (isalnum(ch) || ch == '_'));
 187    *wp = 0;
 188
 189    ungetc(ch, ifd);
 190    return wp-wordbuf;
 191 }
 192
 193 int
 194 get_number()
 195 {
 196    int ch;
 197    int sign = 0;
 198    int value = 0;
 199
 200    while((ch=getc(ifd)) != EOF && isspace(ch)) ;
 201
 202    if( ch == '+' )      { sign=1; ch=getc(ifd); }
 203    else if( ch == '-' ) { sign=-1; ch=getc(ifd); }
 204
 205    while(ch>='0' && ch<='9')
 206    {
 207       value = value * 10 + ch - '0';
 208       ch = getc(ifd);
 209    }
 210
 211    ungetc(ch, ifd);
 212    if (sign < 0) value = -value;
 213
 214    return value;
 215 }
 216
 217 check_keys()
 218 {
 219    struct keys *p;
 220
 221    for(p=keywords; p->name; p++)
 222    {
 223       if (strcmp(wordbuf, p->name) == 0 )
 224       {
 225          status.token = p->token;
 226          return p->token;
 227       }
 228    }
 229    return -1;
 230 }
 231
 232 execute_command()
 233 {
 234    if (status.cols < 1) status.cols = 1;
 235
 236    switch(status.token)
 237    {
 238    case T_INIT:
 239       if (ar_count > 0) status.row_step = ar_val[0];
 240       if (ar_count > 1) status.tot_width = ar_val[1];
 241       if (ar_count > 2) status.con_height = ar_val[2];
 242       else              status.con_height = status.row_step;
 243       if (ar_count > 3) status.con_width = ar_val[3];
 244       else              status.con_width = status.tot_width;
 245
 246       status.gutter = ( status.tot_width - status.con_width ) /2;
 247       break;
 248
 249    case T_SPOS:
 250       status.cury = status.curx = 0;
 251       if (ar_count > 0) status.cury = ar_val[0];
 252       if (ar_count > 1) status.curx = ar_val[1];
 253       break;
 254
 255    case T_SCOL:
 256       fprintf(ofd, "%d, %d", status.curx + status.hadjust,
 257                             status.cury + status.vadjust);
 258       status.hadjust = status.vadjust = 0;
 259
 260       fprintf(ofd, ", %d, %d", status.con_width, status.con_height);
 261
 262       status.cury += status.row_step;
 263
 264       if (ar_count > 0) status.cury += ar_val[0];
 265       if (ar_count > 1) status.curx += ar_val[1];
 266       break;
 267
 268    case T_NEXT:
 269       status.cury += status.row_step;
 270       if (ar_count > 0) status.cury += ar_val[0];
 271       if (ar_count > 1) status.curx += ar_val[1];
 272       break;
 273
 274    case T_COL:
 275       {
 276          int curcol;
 277          int col_pos;
 278
 279          if (ar_count > 0) curcol = ar_val[0]; else curcol = 1;
 280          if (ar_count > 1) status.cols = ar_val[1];
 281
 282          col_pos = (status.con_width+status.gutter) *(curcol-1) /status.cols;
 283
 284          fprintf(ofd, "%d, %d",
 285                status.curx + status.hadjust + col_pos,
 286                status.cury + status.vadjust);
 287          status.hadjust = status.vadjust = 0;
 288       }
 289       break;
 290
 291    case T_SS:
 292       {
 293          int wm = 1, hm=1;
 294          int width;
 295          if (ar_count > 0) wm = ar_val[0];
 296          if (ar_count > 1) hm = ar_val[1];
 297
 298          width = (status.con_width+status.gutter) / status.cols;
 299          width *= wm;
 300          width -= status.gutter;
 301
 302          fprintf(ofd, "%d, %d", width, hm*status.con_height);
 303       }
 304       break;
 305
 306    case T_ADJ:
 307       if (ar_count > 0) status.vadjust = ar_val[0];
 308       if (ar_count > 1) status.hadjust = ar_val[0];
 309       break;
 310
 311    case T_GRID:
 312       if (ar_count > 0) status.cols = ar_val[0];
 313       else              status.cols = 1;
 314       if (ar_count > 1) status.con_height = ar_val[1];
 315       if (ar_count > 2) status.row_step   = ar_val[2];
 316       break;
 317
 318    case T_GAP:
 319       if (ar_count > 0) status.cury += ar_val[0];
 320       else              status.cury += 2;
 321       break;
 322
 323    case T_CURX:
 324       if (ar_count>0)
 325          fprintf(ofd, "%d", status.curx+ar_val[0]);
 326       else
 327          fprintf(ofd, "%d", status.curx);
 328       break;
 329    case T_CURY:
 330       if (ar_count>0)
 331          fprintf(ofd, "%d", status.cury+ar_val[0]);
 332       else
 333          fprintf(ofd, "%d", status.cury);
 334       break;
 335
 336    case T_SAVEPOSN:
 337       saved_status = status;
 338       break;
 339    case T_RESTOREPOSN:
 340       status = saved_status;
 341       break;
 342    }
 343 }