mdw@git.distorted.org.uk Git - ssr/blob - StraySrc/Utilities/c/setdate

   1 /*
   2  * setdate.c
   3  *
   4  * Generate AOF file containing date strings
   5  *
   6  * © 1994-1998 Straylight
   7  */
   8
   9 /*----- Licensing note ----------------------------------------------------*
  10  *
  11  * This file is part of Straylight's core utilities (coreutils).
  12  *
  13  * Coreutils is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2, or (at your option)
  16  * any later version.
  17  *
  18  * Coreutils is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with coreutils.  If not, write to the Free Software Foundation,
  25  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26  */
  27
  28 /*----- Header files ------------------------------------------------------*/
  29
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <stdlib.h>
  33 #include <ctype.h>
  34
  35 #include "swis.h"
  36 #include "kernel.h"
  37
  38 #include "aof/aof.h"
  39 #include "aof/chunk.h"
  40
  41 #include "_time.h"
  42
  43 /*----- Main code ---------------------------------------------------------*/
  44
  45 static aof_file setdate_aof;
  46
  47 static int cistrcmp(const char *s1,const char *s2)
  48 {
  49   char c1;
  50   char c2;
  51   while (*s1 || *s2)
  52   {
  53     c1=tolower(*(s1++));
  54     c2=tolower(*(s2++));
  55     if (c1!=c2)
  56       return (c1-c2);
  57   }
  58   return (0);
  59 }
  60
  61 void aof_error(void)
  62 {
  63   fprintf(stderr,"setdate: not enough memory.\n");
  64   exit(1);
  65 }
  66
  67 static void setdate_addSymbol(char *ident,char *format)
  68 {
  69   _kernel_swi_regs r;
  70   int osword[20];
  71   char string[256];
  72   char time[256];
  73   char *p,*q,c;
  74
  75   /* --- Get the current date --- */
  76
  77   osword[0]=3;
  78   _kernel_osword(14,osword);
  79   r.r[0]=(int)osword;
  80   r.r[1]=(int)time;
  81   r.r[2]=256;
  82   r.r[3]=(int)format;
  83   if (_kernel_swi(OS_ConvertDateAndTime,&r,&r)!=0)
  84   {
  85     fprintf(stderr,"setdate: invalid date format.\n");
  86     exit(1);
  87   }
  88
  89   /* --- Translate our own magic control characters in the string --- */
  90
  91   p=time;
  92   q=string;
  93   while (*p)
  94   {
  95     switch (c=*p++)
  96     {
  97       case '\\':
  98         switch (c=*p++)
  99         {
 100           case 't':
 101             if (q-string<8)
 102               *q++=9;
 103             *q++=9;
 104             break;
 105           case '\\':
 106             *q++='\\';
 107             break;
 108         }
 109         break;
 110       default:
 111         *q++=c;
 112         break;
 113     }
 114   }
 115   *q=0;
 116
 117   /* --- Add the string to the AREA and give it a symbol --- */
 118
 119   aof_addsym(ident,
 120              aof_string(string,setdate_aof.area),
 121              0,
 122              4,
 123              &setdate_aof);
 124 }
 125
 126 int main(int argc,char *argv[])
 127 {
 128   int o;
 129   int i;
 130   char *p;
 131   char *format;
 132   FILE *fp;
 133   char *pname;
 134
 135   aof_chunkinfo obj_area={0};
 136   aof_chunkinfo obj_symt={0};
 137   aof_chunkinfo obj_strt={0};
 138   aof_chunkinfo reloc={0};
 139   aof_chunkinfo obj_head={0};
 140   aof_chunkinfo obj_idfn={0};
 141
 142   pname=strrchr(argv[0],'.');
 143   if (!pname)
 144     pname=argv[0];
 145   else
 146     pname++;
 147
 148   if (argc==1)
 149   {
 150     fprintf(stderr,
 151             "Usage: %s <outfile> <identifier>[=<dateformat>]...\n",
 152             pname);
 153     exit(0);
 154   }
 155   else if (!cistrcmp(argv[1],"-help"))
 156   {
 157     fprintf(stderr,
 158
 159 "%s version 1.00 [%s]\n"
 160 "\n"
 161 "  © 1994 Straylight\n"
 162 "\n"
 163 "Syntax: %s <outfile> <identifier>[=<dateformat>]...\n"
 164 "\n"
 165 "dateformat contains literal characters and format specifiers.  Format\n"
 166 "specifiers consist of a '%%' sign, an optional 'z' (indicating\n"
 167 "suppression of leading zero) and a two character format string, as\n"
 168 "follows:\n"
 169 "\n"
 170 "String  Value\n"
 171 "\n"
 172 "  cs    centiseconds\n"
 173 "  se    seconds\n"
 174 "  mi    minutes\n"
 175 "  12    12-hour style hours\n"
 176 "  24    14-hour style hours\n"
 177 "am/pm   'am' or 'pm' as appropriate\n"
 178 "  we    full weekday name\n"
 179 "  w3    abbreviated weekday name\n"
 180 "  wn    weekday number\n"
 181 "  dy    day of the month\n"
 182 "  st    suffix for day (e.g. 'st', 'nd', 'th' etc.)\n"
 183 "  mo    full month name\n"
 184 "  m3    abbreviated month name\n"
 185 "  mn    month number\n"
 186 "  ce    century number\n"
 187 "  yr    year number within century\n"
 188 "  wk    number of week in the year\n"
 189 "  dn    number of day in the year\n"
 190 "  tz    current time zone name\n"
 191 "  %%     insert a literal '%%' sign\n"
 192 "\n"
 193 "If no dateformat is specifed, a default of '%%zdy %%mo %%ce%%yr' is\n"
 194 "used.\n",
 195
 196             pname,
 197             _time,
 198             pname);
 199     exit(0);
 200   }
 201
 202   if (fp=fopen(argv[1],"wb"),!fp)
 203   {
 204     fprintf(stderr,"setdate: couldn't open output file.\n");
 205     exit(1);
 206   }
 207
 208   setdate_aof.area=&obj_area;
 209   setdate_aof.symt=&obj_symt;
 210   setdate_aof.strt=&obj_strt;
 211   setdate_aof.reloc=&reloc;
 212
 213   /* --- Set up module identification --- */
 214
 215   aof_string("Straylight setdate utility 1.00",
 216              &obj_idfn);
 217   aof_align(obj_idfn);
 218
 219   /* --- Add in the AREA name --- */
 220
 221   aof_int(0,&obj_strt);
 222   aof_string("SetDate$$Data",&obj_strt);
 223
 224   /* --- Create the date information in the AREA section --- */
 225
 226   for (i=2;i<argc;i++)
 227   {
 228     format="%zDY %MO %CE%YR";
 229     for (p=argv[i];*p;p++)
 230     {
 231       if (*p=='=')
 232       {
 233         *p=0;
 234         format=p+1;
 235       }
 236     }
 237     setdate_addSymbol(argv[i],format);
 238   }
 239   aof_align(obj_area);
 240
 241   /* --- Build AOF header information --- */
 242
 243   aof_int((int)aof_RELOC,&obj_head);
 244   aof_int(200,&obj_head);
 245   aof_int(1,&obj_head);
 246   aof_int(obj_symt.next/sizeof(aof_symbol),&obj_head);
 247   aof_int(0,&obj_head);
 248   aof_int(0,&obj_head);
 249
 250   aof_int(4,&obj_head);
 251   aof_int(0x00002202,&obj_head);
 252   aof_int(obj_area.next,&obj_head);
 253   aof_int(reloc.next/8,&obj_head);
 254   aof_int(0,&obj_head);
 255
 256   /* --- Add relocation stuff to AREA chunk --- */
 257
 258   aof_addBlock(reloc.p,reloc.next,&obj_area);
 259
 260   /* --- Complete string table by adding length word --- */
 261
 262   aof_fill(obj_strt.next,0,&obj_strt);
 263   aof_align(obj_strt);
 264
 265   /* --- Write completed AOF file out to disk */
 266
 267   {
 268     char _buf[sizeof(chunk_fixedHeader)+5*sizeof(chunk_tableEntry)];
 269     chunk_header *h=(chunk_header *)&_buf;
 270
 271     h->hdr.id=chunk_MAGIC;
 272     h->hdr.maxChunks=h->hdr.numChunks=5;
 273
 274     memcpy(h->table[0].chunkName,"OBJ_IDFN",8);
 275     memcpy(h->table[1].chunkName,"OBJ_HEAD",8);
 276     memcpy(h->table[2].chunkName,"OBJ_AREA",8);
 277     memcpy(h->table[3].chunkName,"OBJ_SYMT",8);
 278     memcpy(h->table[4].chunkName,"OBJ_STRT",8);
 279
 280     o=sizeof(chunk_fixedHeader)+5*sizeof(chunk_tableEntry);
 281
 282     h->table[0].offset=o;
 283     h->table[0].size=obj_idfn.next;
 284     o+=obj_idfn.next;
 285
 286     h->table[1].offset=o;
 287     h->table[1].size=obj_head.next;
 288     o+=obj_head.next;
 289
 290     h->table[2].offset=o;
 291     h->table[2].size=obj_area.next;
 292     o+=obj_area.next;
 293
 294     h->table[3].offset=o;
 295     h->table[3].size=obj_symt.next;
 296     o+=obj_symt.next;
 297
 298     h->table[4].offset=o;
 299     h->table[4].size=obj_strt.next;
 300     o+=obj_strt.next;
 301
 302     fwrite(h,sizeof(chunk_fixedHeader)+5*sizeof(chunk_tableEntry),1,fp);
 303     fwrite(obj_idfn.p,obj_idfn.next,1,fp);
 304     fwrite(obj_head.p,obj_head.next,1,fp);
 305     fwrite(obj_area.p,obj_area.next,1,fp);
 306     fwrite(obj_symt.p,obj_symt.next,1,fp);
 307     fwrite(obj_strt.p,obj_strt.next,1,fp);
 308     fclose(fp);
 309
 310     free(obj_idfn.p);
 311     free(obj_area.p);
 312     free(obj_strt.p);
 313     free(obj_head.p);
 314     free(obj_symt.p);
 315   }
 316 }