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/* (C) 2002 - 2005 Matthias Andree. See COPYING for license conditions */
#include "leafnode.h"
#include "critmem.h"
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif
#include <string.h>
/*@null@*/ /*@only@*/ char *
getfoldedline(FILE * f, char *(*reader)(FILE *))
{
/* what characters are considered whitespace that marks the beginning of
continuation lines.
WARNING: NEVER EVER list \n here! */
static const char white[] = " \t";
char *l1, *l2;
int c;
size_t len, oldlen;
l1 = reader(f);
if (!l1)
return NULL;
l2 = (char *)critmalloc((len = strlen(l1)) + 1, "getfoldedline");
strcpy(l2, l1); /* RATS: ignore */
/* only try to read continuation if the line is not empty
* and not a lone dot */
if (*l2 && strcmp(l2, ".")) {
for (;;) {
c = fgetc(f);
if (c != EOF) {
ungetc(c, f);
if (strchr(white, c)) {
/* join */
l1 = reader(f);
if (l1) {
oldlen = len;
len += strlen(l1) + 1;
l2 = (char *)critrealloc(l2, len + 2,
"getfoldedline");
l2[oldlen++] = '\n';
strcpy(l2 + oldlen, l1); /* RATS: ignore */
}
} else {
break;
}
} else {
break;
}
}
}
return l2;
}
#ifdef TEST
int debug = 0;
int
main()
{
char *f;
while ((f = getfoldedline(stdin, getaline))) {
puts(f);
free(f);
}
return 0;
}
#endif
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