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re-write /**/ comment handling

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This commit is contained in:
Andre Fachat 2023-01-28 22:12:13 +01:00
parent b5c1e9b902
commit 7e20fd26d5
1 changed files with 53 additions and 30 deletions
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83
xa/src/xap.c
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@ -59,7 +59,6 @@ static int pp_undef(char*);
#define ANZBEF 13
#define VALBEF 6
static int ungeteof = 0;
static int quotebs = 0;
static int inquote = 0;
@ -993,6 +992,7 @@ last line bug ... a very irritated Cameron */
/* #define DEBUG_EGETC */
int egetc(FILE *fp) {
int c;
static int ungeteof = 0;
c = getc(fp);
if (c == EOF) {
@ -1016,47 +1016,70 @@ int egetc(FILE *fp) {
/* smart getc that can skip C comment blocks */
int rgetc(FILE *fp)
{
static int c,cc,d,fl;
cc=0;
fl=0;
int incomment;
int c,d;
incomment=0;
do
{
restart:
while((c=egetc(fp))==13); /* remove ^M for unices */
/* flag if we're in a quoted string */
if(c=='"' && !quotebs) inquote ^= 1;
/* a newlinebreaks any quote */
if (c == '\n') {
inquote = 0;
}
if (!incomment) {
/* not in comment */
/* flag if we're in a quoted string */
if(c=='"' && !quotebs) {
inquote ^= 1;
}
#if(0)
/* implement backslashed quotes for 2.4 */
if(c=='\\') quotebs=1; else quotebs=0;
#endif
/* check for start of comment */
if(!inquote && c=='/')
{
if((d=egetc(fp))!='*') {
ungetc(d,fp);
} else {
incomment++;
/* convene normal processing */
goto restart;
}
}
if(!inquote && fl && (c=='*'))
{
if((d=egetc(fp))!='/')
ungetc(d,fp);
else
{
fl--;
while((c=egetc(fp))==13);
}
} else {
/* in comment */
/* check for end of comment */
/* note: incomment only set true if not quoted, and quote not changed in comment */
if(c=='*')
{
if((d=egetc(fp))!='/') {
ungetc(d,fp);
} else {
incomment--;
/* convene normal processing */
goto restart;
}
}
/* in comment block */
if(c=='\n')
{
flist[fsp].fline++;
nlf=1;
}
}
/* in comment block */
if(c=='\n')
{
flist[fsp].fline++;
nlf=1;
} else
if(!inquote && c=='/')
{
if((d=egetc(fp))!='*')
ungetc(d,fp);
else
fl++;
}
} while(fl && (c!=EOF));
} while(incomment && (c!=EOF));
return(c-'\t'?c:' ');
}