271 lines
7.5 KiB
C
271 lines
7.5 KiB
C
/************************************************************************/
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/* */
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/* RCPP - Resource Compiler Pre-Processor for NT system */
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/* */
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/* GETFLAGS.C - Parse Command Line Flags */
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/* */
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/* 27-Nov-90 w-BrianM Update for NT from PM SDK RCPP */
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/* */
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/************************************************************************/
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdlib.h>
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#include "rcpptype.h"
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#include "getflags.h"
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#include "rcppdecl.h"
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#include "rcppext.h"
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/************************************************************************/
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/* Define function specific macros and global vars */
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/************************************************************************/
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static char *ErrString; /* Store string pointer in case of error */
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/************************************************************************/
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/* Local Function Prototypes */
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/************************************************************************/
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int getnumber (char *);
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int isita (char *, char);
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void substr (struct cmdtab *, char *, int);
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int tailmatch (char *, char *);
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/************************************************************************
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* crack_cmd(table, string, func, dup)
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* set flags determined by the string based on table.
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* func will get the next word.
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* if dup is set, any strings stored away will get pstrduped
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* see getflags.h for specific matching and setting operators
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*
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* for flags which take parameters, a 'char' following the flag where 'char' is
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* '#' : says the parameter string may be separated from the option.
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* ie, "-M#" accepts "-Mabc" and "-M abc"
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* '*' : says the parameter must be concatenated with the flag
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* ie, "-A*" accepts only "-Axyz" not "-A xyz"
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* if neither is specified a space is required between parameter and flag
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* ie, "-o" accepts only "-o file" and not "-ofile"
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*
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* Modified by: Dave Weil D001
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* recognize '-' and '/' as equivalent on MSDOS
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*
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************************************************************************/
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int crack_cmd(struct cmdtab *tab, char *string, char *(*next)(void), int _dup)
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{
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register char *format, *str;
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if (!string) {
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return(0);
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}
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ErrString = string;
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for (; tab->type; tab++) /* for each format */ {
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format = tab->format;
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str = string;
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for (; ; ) /* scan the string */
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switch (*format) {
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/* optional space between flag and parameter */
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case '#':
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if ( !*str ) {
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substr(tab, (*next)(), _dup);
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} else {
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substr(tab, str, _dup);
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}
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return(tab->retval);
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break;
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/* no space allowed between flag and parameter */
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case '*':
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if (*str && tailmatch(format, str))
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substr(tab, str, _dup);
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else
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goto notmatch;
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return(tab->retval);
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break;
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/* space required between flag and parameter */
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case 0:
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if (*str) { /* str left, no good */
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goto notmatch;
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} else if (tab->type & TAKESARG) { /* if it takes an arg */
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substr(tab, (*next)(), _dup);
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} else { /* doesn't want an arg */
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substr(tab, (char *)0, _dup);
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}
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return(tab->retval);
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break;
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case '-': /* D001 */
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if ('-' == *str) {
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str++; /* D001 */
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format++; /* D001 */
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continue; /* D001 */
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} /* D001 */
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else /* D001 */
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goto notmatch; /* D001 */
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default:
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if (*format++ == *str++)
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continue;
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goto notmatch;
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}
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/* sorry. we need to break out two levels of loop */
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notmatch:
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;
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}
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return(0);
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}
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/************************************************************************/
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/* set the appropriate flag(s). called only when we know we have a match */
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/************************************************************************/
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void substr(struct cmdtab *tab, register char *str, int _dup)
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{
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register struct subtab *q;
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LIST * list;
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char *string = str;
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switch (tab->type) {
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case FLAG:
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*(int *)(tab->flag) = 1;
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return;
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case UNFLAG:
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*(int *)(tab->flag) = 0;
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return;
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case NOVSTR:
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if (*(char **)(tab->flag)) {
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/* before we print it out in the error message get rid of the
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* arg specifier (e.g. #) at the end of the format.
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*/
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string = _strdup(tab->format);
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if (!string) {
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Msg_Temp = GET_MSG (1002);
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SET_MSG (Msg_Text, Msg_Temp);
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error(1002);
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return;
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}
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string[strlen(string)-1] = '\0';
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Msg_Temp = GET_MSG(1046);
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SET_MSG (Msg_Text, Msg_Temp, string,*(char **)(tab->flag),str);
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fatal(1046);
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return;
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}
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/* fall through */
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case STRING:
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*(char **)(tab->flag) = (_dup ? _strdup(str) : str);
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return;
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case NUMBER:
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*(int *)(tab->flag) = getnumber (str);
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return;
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case PSHSTR:
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list = (LIST * )(tab->flag);
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if (list->li_top > 0)
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list->li_defns[--list->li_top] = (_dup ? _strdup(str) : str);
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else {
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Msg_Temp = GET_MSG(1047);
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SET_MSG (Msg_Text, Msg_Temp, tab->format, str);
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fatal(1047);
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}
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return;
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case SUBSTR:
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for ( ; *str; ++str) { /* walk the substring */
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for (q = (struct subtab *)tab->flag; q->letter; q++) {
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/*
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** for every member in the table
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*/
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if (*str == (char)q->letter)
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switch (q->type) {
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case FLAG:
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*(q->flag) = 1;
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goto got_letter;
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case UNFLAG:
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*(q->flag) = 0;
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goto got_letter;
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default:
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goto got_letter;
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}
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}
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got_letter:
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if (!q->letter) {
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Msg_Temp = GET_MSG(1048);
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SET_MSG (Msg_Text, Msg_Temp, *str, ErrString);
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fatal(1048);
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}
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}
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return;
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default:
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return;
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}
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}
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/************************************************************************/
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/* Parse the string and return a number 0 <= x < 0xffff (64K) */
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/************************************************************************/
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int getnumber (char *str)
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{
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long i = 0;
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char *ptr = str;
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for (; isspace(*ptr); ptr++)
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;
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if (!isdigit(*ptr) || (((i = atol(ptr)) >= 65535) || i < 0)) {
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Msg_Temp = GET_MSG(1049);
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SET_MSG (Msg_Text, Msg_Temp, str);
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fatal(1049); /* invalid numerical argument, 'str' */
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}
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return ((int) i);
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}
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/************************************************************************/
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/* is the letter in the string? */
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/************************************************************************/
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int isita (register char *str, register char let)
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{
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if (str)
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while (*str)
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if (*str++ == let)
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return(1);
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return(0);
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}
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/************************************************************************/
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/* compare a tail format (as in *.c) with a string. if there is no */
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/* tail, anything matches. (null strings are detected elsewhere) */
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/* the current implementation only allows one wild card */
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/************************************************************************/
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int tailmatch (char *format, char *str)
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{
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register char *f = format;
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register char *s = str;
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if (f[1] == 0) /* wild card is the last thing in the format, it matches */
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return(1);
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while (f[1]) /* find char in front of null in format */
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f++;
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while (s[1]) /* find char in front of null in string to check */
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s++;
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while (*s == *f) { /* check chars walking towards front */
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s--;
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f--;
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}
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/*
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** if we're back at the beginning of the format
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** and
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** the string is either at the beginning or somewhere inside
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** then we have a match.
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**
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** ex format == "*.c", str == "file.c"
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** at this point *f = '*' and *s == 'e', since we've kicked out of the above
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** loop. since f==format and s>=str this is a match.
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** but if format == "*.c" and str == "file.asm" then
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** *f == 'c' and *s = 'm', f != format and no match.
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*/
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return((f == format) && (s >= str));
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}
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