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use malloc, made more robust against errors in line directives

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This commit is contained in:
ceriel 1987-08-04 19:30:14 +00:00
parent bcb04a1a76
commit 3c6a9b2b96
1 changed files with 51 additions and 25 deletions
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54
util/ack/pc/em_pc.c
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@ -94,7 +94,7 @@ int atoi();
void exit();
void sleep();
void execv();
char *sbrk();
char *malloc();
int chdir();
int fork();
int wait();
@ -397,7 +397,7 @@ int list(p,q) char *p,*q; {
return(0);
}
if (index == 0) {
index = (int *) sbrk(MAXERNO * sizeof index[0]);
index = (int *) malloc(MAXERNO * sizeof index[0]);
fillindex();
}
if ((inpfil = fopen(p,"r")) == NULL)
@ -457,10 +457,10 @@ int nextline(printing) {
listlino++;
ch = getc(inpfil);
if (ch == '#') {
if (lineline(printing) == 0)
fatal("bad line directive");
while (ch == '#') {
if (lineline(printing) == 1)
return(1);
ch = getc(inpfil);
}
listrela++;
if (listfnam == source)
@ -482,35 +482,61 @@ lineline(printing) {
register ch;
register char *p,*q;
static char line[100];
int ln;
p = line;
while ((ch = getc(inpfil)) != '\n') {
if (ch == EOF || p == &line[100-1])
if (ch == EOF || p == &line[100-1]) {
*p = 0;
listlino++;
listrela++;
if (listfnam == source)
listorig++;
if (printing) {
printf("%5d\t#%s", listorig, p);
putchar(ch);
}
while (ch != EOF && ch != '\n') {
ch = getc(inpfil);
if (ch != EOF && printing) putchar(ch);
}
return(0);
}
*p++ = ch;
}
*p = '\0'; p = line;
if (printing)
printf("\t#%s\n",p);
if ((listrela = atoi(p)-1) < 0)
return(0);
while ((ch = *p++) != '"')
if (ch == '\0')
return(0);
ln = atoi(p)-1;
if (ln >= 0) {
while ((ch = *p++) != '"' && ch != '\0')
;
if (ch == '"') {
q = p;
while (ch = *p++) {
if (ch == '"') {
*--p = '\0';
listrela = ln;
if ( source ) {
listfnam = strcmp(q,source)==0 ? source : q;
return(1);
}
else {
source=q ; listfnam=q ;
}
listlino++;
if (printing)
printf("\t#%s\n",p);
return 1 ;
}
if (ch == '/')
q = p;
}
}
}
listlino++;
listrela++;
if (listfnam == source)
listorig++;
if (printing)
printf("%5d\t#%s\n",listorig, p);
return(0);
}