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#include "readclose.h"
#include <unistd.h>
#include "error.h"
#include "open.h"
/**
@file readclose.c
@author kp
@source qlibs
@brief This is the successor of the older 'slurpclose.c' file. The function
'slurpclose' is now called 'readclose_append'. The other function
'readclose' was introduced here initial.
*/
int readclose_append(int fd, stralloc *sa, unsigned int bufsize)
{
int r;
for (;;) {
if (!stralloc_readyplus(sa, bufsize)) {
close(fd);
return -1;
}
r = read(fd, sa->s + sa->len, bufsize);
if (r == -1)
if (errno == EINTR) continue;
if (r <= 0) {
close(fd);
return r;
}
sa->len += r;
}
}
int readclose(int fd, stralloc *sa, unsigned int bufsize)
{
if (!stralloc_copys(sa, "")) {
close(fd);
return -1;
}
return readclose_append(fd, sa, bufsize);
}
int openreadclose(const char *fn, stralloc *sa, unsigned int bufsize)
{
int fd;
fd = open_read((char *)fn);
if (fd == -1) {
if (errno == ENOENT) return 0;
return -1;
}
if (readclose(fd, sa, bufsize) == -1) return -1;
return 1;
}
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