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/********************************************
makescan.c
copyright 2009-2016,2024, Thomas E. Dickey
copyright 1991, Michael D. Brennan
This is a source file for mawk, an implementation of
the AWK programming language.
Mawk is distributed without warranty under the terms of
the GNU General Public License, version 2, 1991.
********************************************/
/*
* $MawkId: makescan.c,v 1.12 2024/08/25 17:17:31 tom Exp $
*/
/* source for makescan.exe which builds the scancode[]
via: makescan.exe > scancode.c
*/
#include <stdio.h>
#include <time.h>
#include <nstd.h>
#include <scancode.h>
char scan_code[256];
static void
scan_init(void)
{
register char *p;
memset(scan_code, SC_UNEXPECTED, sizeof(scan_code));
for (p = &scan_code['0']; p <= &scan_code['9']; p++)
*p = SC_DIGIT;
scan_code[0] = 0;
scan_code[' '] = scan_code['\t'] = scan_code['\f'] = SC_SPACE;
scan_code['\r'] = scan_code['\013'] = SC_SPACE;
scan_code[';'] = SC_SEMI_COLON;
scan_code['\n'] = SC_NL;
scan_code['{'] = SC_LBRACE;
scan_code['}'] = SC_RBRACE;
scan_code['+'] = SC_PLUS;
scan_code['-'] = SC_MINUS;
scan_code['*'] = SC_MUL;
scan_code['/'] = SC_DIV;
scan_code['%'] = SC_MOD;
scan_code['^'] = SC_POW;
scan_code['('] = SC_LPAREN;
scan_code[')'] = SC_RPAREN;
scan_code['_'] = SC_IDCHAR;
scan_code['='] = SC_EQUAL;
scan_code['#'] = SC_COMMENT;
scan_code['\"'] = SC_DQUOTE;
scan_code[','] = SC_COMMA;
scan_code['!'] = SC_NOT;
scan_code['<'] = SC_LT;
scan_code['>'] = SC_GT;
scan_code['|'] = SC_OR;
scan_code['&'] = SC_AND;
scan_code['?'] = SC_QMARK;
scan_code[':'] = SC_COLON;
scan_code['['] = SC_LBOX;
scan_code[']'] = SC_RBOX;
scan_code['\\'] = SC_ESCAPE;
scan_code['.'] = SC_DOT;
scan_code['~'] = SC_MATCH;
scan_code['$'] = SC_DOLLAR;
for (p = &scan_code['A']; p <= &scan_code['Z']; p++)
p[0] = p['a' - 'A'] = SC_IDCHAR;
}
static void
scan_print(void)
{
time_t now = time((time_t *) 0);
register char *p = scan_code;
register int c; /* column */
register int r; /* row */
printf("/*\n * %cMawkId%c\n * generated by makescan.c\n * date: %s */\n",
'$', '$', ctime(&now));
printf("#include \"scancode.h\"\n");
printf("/* *INDENT-OFF* */\n");
printf("char scan_code[256] = {\n");
for (r = 1; r <= 16; r++) {
for (c = 1; c <= 16; c++) {
printf("%2d", *p++);
if (r != 16 || c != 16)
putchar(',');
}
putchar('\n');
}
printf("} ;\n");
printf("/* *INDENT-ON* */\n");
}
int
main(void)
{
scan_init();
scan_print();
return 0;
}
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