Subversion Repositories SvarDOS

/*

 * Locales configuration for SvarDOS

 *

 * Copyright (C) Mateusz Viste 2015-2023

 *

 * MIT license

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include <stdio.h>

#include <stdlib.h> /* atoi() */

#include <string.h> /* strchr */

#include "svarlang.h"

#include "country.h"

#define PVER "20231227"

#define PDATE "2015-2023"

enum NLS_STRINGS {

  NLS_HLP_VER           = 0x0000,

  NLS_HLP_DESC          = 0x0001,

  NLS_HLP_USAGE         = 0x0002,

  NLS_HLP_OPTIONS       = 0x0003,

  NLS_HLP_COUNTRY       = 0x000A,

  NLS_HLP_CP            = 0x000B,

  NLS_HLP_DECIM         = 0x000C,

  NLS_HLP_THOUS         = 0x000D,

  NLS_HLP_DATESEP       = 0x000E,

  NLS_HLP_DATEFMT       = 0x000F,

  NLS_HLP_TIMESEP       = 0x0010,

  NLS_HLP_TIMEFMT       = 0x0011,

  NLS_HLP_CURR          = 0x0012,

  NLS_HLP_CURRPOS0      = 0x0013,

  NLS_HLP_CURRPOS1      = 0x0014,

  NLS_HLP_CURRPOS2      = 0x0015,

  NLS_HLP_CURRSPC       = 0x0016,

  NLS_HLP_CURRPREC      = 0x0017,

  NLS_HLP_YESNO         = 0x0018,

  NLS_HLP_INFOLOC1      = 0x0032,

  NLS_HLP_INFOLOC2      = 0x0033,

  NLS_INFO_COUNTRY      = 0x0700,

  NLS_INFO_CODEPAGE     = 0x0701,

  NLS_INFO_DECSEP       = 0x0702,

  NLS_INFO_THOUSEP      = 0x0703,

  NLS_INFO_DATEFMT      = 0x0704,

  NLS_INFO_TIMEFMT      = 0x0705,

  NLS_INFO_YESNO        = 0x0706,

  NLS_INFO_CURREXAMPLE  = 0x0707,

  NLS_MAKESURE          = 0x0709,

  NLS_ERR_FILEPATHTWICE = 0x0900,

  NLS_ERR_BADPATH       = 0x0901,

  NLS_ERR_READFAIL      = 0x0902,

  NLS_ERR_INVPARAM      = 0x0903,

  NLS_ERR_INVFORMAT     = 0x0904,

  NLS_ERR_NOTLOCALCFG   = 0x0905

};

static void output(const char *s) {

  _asm {

    /* set cx to strlen(s) */

    push ds

    pop es

    mov di, s

    xor al, al

    cld

    mov cx, 0xff

    repne scasb  /* compare ES:DI with AL, inc DI until match */

    mov cx, di

    sub cx, s

    dec cx

    /* output via DOS */

    mov ah, 0x40  /* write to handle */

    mov bx, 1     /* 1=stdout */

    mov dx, s

    int 0x21

  }

}

static void crlf(void) {

  output("\r\n");

}

static void outputnl(const char *s) {

  output(s);

  crlf();

}

static void nls_put(enum NLS_STRINGS id) {

  output(svarlang_strid(id));

}

static void nls_puts(enum NLS_STRINGS id) {

  nls_put(id);

  crlf();

}

static void about(void) {

  output("localcfg ");

  nls_put(NLS_HLP_VER);

  outputnl(" " PVER ", (C) " PDATE " Mateusz Viste");

  nls_puts(NLS_HLP_DESC);

  crlf();

  nls_puts(NLS_HLP_USAGE);

  crlf();

  nls_puts(NLS_HLP_OPTIONS);

  crlf();

  nls_puts(NLS_HLP_COUNTRY);

  nls_puts(NLS_HLP_CP);

  nls_puts(NLS_HLP_DECIM);

  nls_puts(NLS_HLP_THOUS);

  nls_puts(NLS_HLP_DATESEP);

  nls_puts(NLS_HLP_DATEFMT);

  nls_puts(NLS_HLP_TIMESEP);

  nls_puts(NLS_HLP_TIMEFMT);

  nls_puts(NLS_HLP_CURR);

  nls_puts(NLS_HLP_CURRPOS0);

  nls_puts(NLS_HLP_CURRPOS1);

  nls_puts(NLS_HLP_CURRPOS2);

  nls_puts(NLS_HLP_CURRSPC);

  nls_puts(NLS_HLP_CURRPREC);

  nls_puts(NLS_HLP_YESNO);

  crlf();

  nls_puts(NLS_HLP_INFOLOC1);

  nls_puts(NLS_HLP_INFOLOC2);

}

static char *datestring(char *result, struct country *c) {

  switch (c->CTYINFO.datefmt) {

    case COUNTRY_DATE_MDY:

      sprintf(result, "12%c31%c1990", c->CTYINFO.datesep[0], c->CTYINFO.datesep[0]);

      break;

    case COUNTRY_DATE_DMY:

      sprintf(result, "31%c12%c1990", c->CTYINFO.datesep[0], c->CTYINFO.datesep[0]);

      break;

    case COUNTRY_DATE_YMD:

    default:

      sprintf(result, "1990%c12%c31", c->CTYINFO.datesep[0], c->CTYINFO.datesep[0]);

      break;

  }

  return(result);

}

static char *timestring(char *result, struct country *c) {

  if (c->CTYINFO.timefmt == COUNTRY_TIME12) {

    sprintf(result, "11%c59%c59 PM", c->CTYINFO.timesep[0], c->CTYINFO.timesep[0]);

  } else {

    sprintf(result, "23%c59%c59", c->CTYINFO.timesep[0], c->CTYINFO.timesep[0]);

  }

  return(result);

}

static char *currencystring(char *result, struct country *c) {

  char decimalpart[16];

  char space[2] = {0, 0};

  char decsym[8];

  char cursym[8];

  decimalpart[0] = '1';

  decimalpart[1] = '2';

  decimalpart[2] = '3';

  decimalpart[3] = '4';

  decimalpart[4] = '5';

  decimalpart[5] = '6';

  decimalpart[6] = '7';

  decimalpart[7] = '8';

  decimalpart[8] = '9';

  decimalpart[9] = 0;

  /* prepare the decimal string first */

  if (c->CTYINFO.currprec < 9) {

    decimalpart[c->CTYINFO.currprec] = 0;

  }

  /* prepare the currency space string */

  if (c->CTYINFO.currspace != 0) {

    space[0] = ' ';

  }

  /* prepare the currency and decimal symbols */

  if (c->CTYINFO.currdecsym != 0) { /* currency replaces the decimal point */

    sprintf(decsym, "%s", c->CTYINFO.currsym);

    cursym[0] = 0;

  } else {

    sprintf(decsym, "%c", c->CTYINFO.decimal[0]);

    sprintf(cursym, "%s", c->CTYINFO.currsym);

  }

  if (c->CTYINFO.currprec == 0) decsym[0] = 0;

  /* compute the final string */

  if (c->CTYINFO.currpos == 0) { /* currency precedes value */

    sprintf(result, "%s%s99%s%s", cursym, space, decsym, decimalpart);

  } else { /* currency follows value or replaces decimal symbol */

    sprintf(result, "99%s%s%s%s", decsym, decimalpart, space, cursym);

  }

  return(result);

}

/* checks if str starts with prefix. returns 0 if so, non-zero otherwise. */

static int stringstartswith(char *str, char *prefix) {

  for (;;) {

    /* end of prefix means success */

    if (*prefix == 0) return(0);

    /* otherwise there is no match */

    if (*str != *prefix) return(-1);

    /* if match good so far, look at next char */

    str += 1;

    prefix += 1;

  }

}

/* processes an argument. returns 0 on success, non-zero otherwise. */

static int processarg(char *arg, struct country *c) {

  char *value;

  int intvalue;

  /* an option must start with a '/' */

  if (arg[0] != '/') return(-1);

  arg += 1; /* skip the slash */

  /* find where the value starts */

  value = strchr(arg, ':');

  /* if no value present, fail */

  if (value == NULL) return(-2);

  value += 1;

  if (*value == 0) return(-3);

  /* interpret the option now */

  if (stringstartswith(arg, "country:") == 0) {

    intvalue = atoi(value);

    if ((intvalue > 0) && (intvalue < 1000)) {

      c->CTYINFO.id = intvalue;

      return(0);

    }

  } else if (stringstartswith(arg, "cp:") == 0) {

    intvalue = atoi(value);

    if ((intvalue > 0) && (intvalue < 1000)) {

      c->CTYINFO.codepage = intvalue;

      return(0);

    }

  } else if (stringstartswith(arg, "decim:") == 0) {

    if (value[1] == 0) { /* value must be exactly one character */

      c->CTYINFO.decimal[0] = *value;

      return(0);

    }

  } else if (stringstartswith(arg, "thous:") == 0) {

    if (value[1] == 0) { /* value must be exactly one character */

      c->CTYINFO.thousands[0] = *value;

      return(0);

    }

  } else if (stringstartswith(arg, "datesep:") == 0) {

    if (value[1] == 0) { /* value must be exactly one character */

      c->CTYINFO.datesep[0] = *value;

      return(0);

    }

  } else if (stringstartswith(arg, "timesep:") == 0) {

    if (value[1] == 0) { /* value must be exactly one character */

      c->CTYINFO.timesep[0] = *value;

      return(0);

    }

  } else if (stringstartswith(arg, "datefmt:") == 0) {

    if (strcmp(value, "MDY") == 0) {

      c->CTYINFO.datefmt = COUNTRY_DATE_MDY;

      return(0);

    } else if (strcmp(value, "DMY") == 0) {

      c->CTYINFO.datefmt = COUNTRY_DATE_DMY;

      return(0);

    } else if (strcmp(value, "YMD") == 0) {

      c->CTYINFO.datefmt = COUNTRY_DATE_YMD;

      return(0);

    }

  } else if (stringstartswith(arg, "timefmt:") == 0) {

    if (value[1] == 0) {

      if ((value[0] >= '0') && (value[0] <= '1')) {

        c->CTYINFO.timefmt = value[0] - '0';

        return(0);

      }

    }

  } else if (stringstartswith(arg, "curr:") == 0) {

    if (strlen(value) <= 4) {

      strcpy(c->CTYINFO.currsym, value);

      return(0);

    }

  } else if (stringstartswith(arg, "currpos:") == 0) {

    if (value[1] == 0) {

      if (value[0] == '0') {

        c->CTYINFO.currpos = 0;

        return(0);

      } else if (value[0] == '1') {

        c->CTYINFO.currpos = 1;

        return(0);

      } else if (value[0] == '2') {

        c->CTYINFO.currpos = 0;

        c->CTYINFO.currdecsym = 1;

        return(0);

      }

    }

  } else if (stringstartswith(arg, "currspc:") == 0) {

    if (value[1] == 0) {

      if ((value[0] >= '0') && (value[0] <= '1')) {

        c->CTYINFO.currspace = value[0] - '0';

        return(0);

      }

    }

  } else if (stringstartswith(arg, "currprec:") == 0) {

    if (value[1] == 0) {

      if ((value[0] >= '0') && (value[0] <= '9')) {

        c->CTYINFO.currprec = value[0] - '0';

        return(0);

      }

    }

  } else if (stringstartswith(arg, "yesno:") == 0) {

    /* string must be exactly 2 characters long */

    if ((value[0] != 0) && (value[1] != 0) && (value[2] == 0)) {

      c->YESNO.yes[0] = value[0];

      c->YESNO.no[0] = value[1];

      return(0);

    }

  }

  /* if I'm here, something went wrong */

  return(-4);

}

/* converts a path to its canonic representation, returns 0 on success

 * or DOS err on failure (invalid drive) */

static unsigned short file_truename(const char *dst, char *src) {

  unsigned short res = 0;

  _asm {

    push es

    mov ah, 0x60  /* query truename, DS:SI=src, ES:DI=dst */

    push ds

    pop es

    mov si, src

    mov di, dst

    int 0x21

    jnc DONE

    mov [res], ax

    DONE:

    pop es

  }

  return(res);

}

static void default_country_path(char *s) {

  char *dosdir = getenv("DOSDIR");

  size_t dosdirlen;

  s[0] = 0;

  if (dosdir == NULL) return;

  dosdirlen = strlen(dosdir);

  if (dosdirlen == 0) return;

  /* drop trailing backslash if present */

  if (dosdir[dosdirlen - 1] == '\\') dosdirlen--;

  /* copy dosdir to s and append the rest of the path */

  memcpy(s, dosdir, dosdirlen);

  strcpy(s + dosdirlen, "\\CFG\\COUNTRY.SYS");

}

int main(int argc, char **argv) {

  struct country cntdata;

  int changedflag;

  int x;

  static char fname[130];

  static char buff[64];

  svarlang_autoload_exepath(argv[0], getenv("LANG"));

  /* scan argv looking for the path to country.sys */

  for (x = 1; x < argc; x++) {

    if (argv[x][0] != '/') {

      if (fname[0] != 0) {

        nls_puts(NLS_ERR_FILEPATHTWICE);

        return(1);

      }

      /* */

      if (file_truename(fname, argv[x]) != 0) {

        nls_puts(NLS_ERR_BADPATH);

        return(1);

      }

    } else if (strcmp(argv[x], "/?") == 0) { /* is it /? */

      about();

      return(1);

    }

  }

  /* if no file path provided, look into %DOSDIR%\CFG\COUNTRY.SYS */

  if (fname[0] == 0) default_country_path(fname);

  x = country_read(&cntdata, fname);

  if (x != 0) {

    if (x == COUNTRY_ERR_INV_FORMAT) {

      nls_puts(NLS_ERR_INVFORMAT);

    } else if (x == COUNTRY_ERR_NOT_LOCALCFG) {

      nls_puts(NLS_ERR_NOTLOCALCFG);

    } else {

      nls_puts(NLS_ERR_READFAIL);

    }

    return(2);

  }

  changedflag = 0;

  /* process command line arguments */

  for (x = 1; x < argc; x++) {

    if (argv[x][0] != '/') continue; /* skip country.sys filename (processed earlier) */

    changedflag++;

    if (processarg(argv[x], &cntdata) != 0) {

      nls_puts(NLS_ERR_INVPARAM);

      return(3);

    }

  }

  nls_put(NLS_INFO_COUNTRY);

  sprintf(buff, " %03d", cntdata.CTYINFO.id);

  outputnl(buff);

  nls_put(NLS_INFO_CODEPAGE);

  sprintf(buff, " %d", cntdata.CTYINFO.codepage);

  outputnl(buff);

  nls_put(NLS_INFO_DECSEP);

  sprintf(buff, " %c", cntdata.CTYINFO.decimal[0]);

  outputnl(buff);

  nls_put(NLS_INFO_THOUSEP);

  sprintf(buff, " %c", cntdata.CTYINFO.thousands[0]);

  outputnl(buff);

  nls_put(NLS_INFO_DATEFMT);

  output(" ");

  outputnl(datestring(buff, &cntdata));

  nls_put(NLS_INFO_TIMEFMT);

  output(" ");

  outputnl(timestring(buff, &cntdata));

  nls_put(NLS_INFO_YESNO);

  sprintf(buff, " %c/%c", cntdata.YESNO.yes[0], cntdata.YESNO.no[0]);

  outputnl(buff);

  nls_put(NLS_INFO_CURREXAMPLE);

  output(" ");

  outputnl(currencystring(buff, &cntdata));

  crlf();

  nls_puts(NLS_MAKESURE);

  sprintf(buff, "COUNTRY=%03d,%03d,", cntdata.CTYINFO.id, cntdata.CTYINFO.codepage);

  output(buff);

  outputnl(fname);

  /* if anything changed, write the new file */

  if (changedflag != 0) country_write(fname, &cntdata);

  return(0);

}